/**
 * Emran Rafid Editorial Design System
 * Textured Vintage Editorial × Modern Digital Learning
 */

/* ========================================================
   CUSTOM BENGALI FONTS (FONTBD)
   1. Big Heading: Abu Sayed
   2. Paragraph / Body: Bornomala Vintage
   3. Sub Heading: Shorif Sandwip
   ======================================================== */
@font-face {
  font-family: 'Abu Sayed';
  src: url('../fonts/abu-sayed/CodepotroAbuSayed.ttf') format('truetype');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Bornomala Vintage';
  src: url('../fonts/bornomala-vintage/BornomalaVintage.ttf') format('truetype');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Shorif Sandwip';
  src: url('../fonts/shorif-sandwip/ShorifSandwip.ttf') format('truetype');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

:root {
  /* PALETTE TOKENS */
  --er-paper: #F3EFE5;
  --er-cream: #E8E0D1;
  --er-ink: #24231F;
  --er-espresso: #49362D;
  --er-olive: #71745B;
  --er-terracotta: #AD654B;
  --er-border: #D3C7B6;
  --er-border-dark: #B5A591;
  --er-white: #FCFAF6;
  --er-muted-text: #665F55;
  --er-free-green: #3B6B4C;
  --er-paid-badge: #7B3E2B;

  /* TYPOGRAPHY TOKENS (CURATED BENGALI TRIO) */
  --er-font-heading-big: 'Abu Sayed', 'Fraunces', 'Noto Serif Bengali', serif;
  --er-font-subheading: 'Shorif Sandwip', 'Fraunces', 'Noto Serif Bengali', serif;
  --er-font-body: 'Bornomala Vintage', 'Hind Siliguri', 'Inter', -apple-system, sans-serif;
  --er-font-display: var(--er-font-heading-big);
  --er-font-subhead: var(--er-font-subheading);
  --er-font-mono: 'JetBrains Mono', monospace;

  /* SPACING & SIZING */
  --er-container-max: 1220px;
  --er-article-max: 780px;
  --er-radius-sm: 3px;
  --er-radius-md: 6px;
  --er-radius-lg: 8px;

  /* SHADOWS (TACTILE & OFFSET) */
  --er-shadow-stamp: 2px 2px 0px rgba(36, 35, 31, 0.15);
  --er-shadow-card: 3px 3px 0px rgba(73, 54, 45, 0.12);
  --er-shadow-hover: 5px 5px 0px var(--er-espresso);
  --er-shadow-btn: 2px 2px 0px var(--er-ink);
}

/* BASE RESET & GLOBAL TEXTURE */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--er-paper);
  color: var(--er-ink);
  font-family: var(--er-font-body);
  font-weight: 400;
  line-height: 1.65;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Subtle SVG paper grain noise overlay */
body.er-paper-texture::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 99999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* ACCESSIBILITY FOCUS & SKIP LINK */
:focus-visible {
  outline: 2px solid var(--er-terracotta);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 10px;
  background: var(--er-ink);
  color: var(--er-paper);
  padding: 8px 16px;
  z-index: 100000;
  font-weight: 600;
}
.skip-link:focus {
  top: 10px;
}

/* TYPOGRAPHY PRESETS (BENGALI EDITORIAL TRIO) */
/* 1. BIG HEADINGS: Abu Sayed */
h1,
.er-hero-title,
.er-section-title,
.er-resource-hero-title,
.er-project-title,
.er-course-hero-title,
.er-page-title {
  font-family: var(--er-font-heading-big);
  color: var(--er-ink);
  line-height: 1.25;
  font-weight: 700;
}

/* 2. SUB HEADINGS: Shorif Sandwip */
h2, h3, h4, h5, h6,
.er-section-sub,
.er-section-subtitle,
.er-detail-heading,
.er-card-title,
.er-sidebar-title,
.er-journey-title,
.er-footer-banner-title {
  font-family: var(--er-font-subheading);
  color: var(--er-ink);
  line-height: 1.35;
  font-weight: 600;
}

/* 3. PARAGRAPHS & BODY COPY: Bornomala Vintage */
body,
p,
.er-hero-lead,
.er-hero-subtitle,
.er-prose,
.er-prose p,
.er-detail-text,
.er-card-excerpt,
.er-journey-sub {
  font-family: var(--er-font-body);
}

p {
  margin-bottom: 1.15rem;
  font-family: var(--er-font-body);
  line-height: 1.7;
}

a {
  color: var(--er-ink);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--er-terracotta);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* LAYOUT CONTAINER */
.er-container {
  width: 100%;
  max-width: var(--er-container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.er-container--article {
  max-width: var(--er-article-max);
}

/* ========================================================
   UTILITY STRIP & HEADER
   ======================================================== */
.er-utility-bar {
  background-color: var(--er-cream);
  border-bottom: 1px solid var(--er-border);
  font-size: 13px;
  color: var(--er-muted-text);
  padding: 6px 0;
}

.er-utility-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.er-utility-left, .er-utility-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.er-bullet {
  color: var(--er-terracotta);
  font-size: 10px;
}

.er-utility-tag {
  font-family: var(--er-font-mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 11px;
}

.er-utility-sep {
  color: var(--er-border-dark);
}

.er-utility-phone, .er-utility-wa {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--er-ink);
  font-weight: 500;
}

.er-utility-phone:hover, .er-utility-wa:hover {
  color: var(--er-terracotta);
}

/* MAIN HEADER */
.er-site-header {
  background-color: var(--er-paper);
  border-bottom: 2px solid var(--er-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.2s ease;
}

.er-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}

/* BRAND LOGO */
.er-branding {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.custom-logo-link,
.er-brand-link--image {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.custom-logo,
.er-custom-logo-img {
  max-height: 48px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}

.er-brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.er-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--er-ink);
  color: var(--er-paper);
  font-family: var(--er-font-display);
  font-weight: 700;
  font-size: 18px;
  border-radius: var(--er-radius-sm);
  border: 1px solid var(--er-espresso);
  box-shadow: 2px 2px 0 var(--er-terracotta);
}

.er-brand-text {
  display: flex;
  flex-direction: column;
}

.er-brand-title {
  font-family: var(--er-font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--er-ink);
  line-height: 1.1;
}

.er-brand-subtitle {
  font-size: 11px;
  font-family: var(--er-font-mono);
  color: var(--er-muted-text);
  letter-spacing: 0.5px;
}

/* PRIMARY NAVIGATION */
.er-primary-nav {
  display: none;
}

@media (min-width: 960px) {
  .er-primary-nav {
    display: block;
  }
}

.er-menu-list {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.er-menu-list a {
  font-weight: 500;
  font-size: 15px;
  color: var(--er-ink);
  padding: 6px 0;
  position: relative;
}

.er-menu-list a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--er-terracotta);
  transition: width 0.25s ease;
}

.er-menu-list a:hover::after,
.er-menu-list .current-menu-item > a::after {
  width: 100%;
}

/* HEADER ACTIONS */
.er-header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.er-btn-icon {
  background: transparent;
  border: 1px solid var(--er-border);
  color: var(--er-ink);
  width: 38px;
  height: 38px;
  border-radius: var(--er-radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.er-btn-icon:hover {
  background-color: var(--er-cream);
  border-color: var(--er-border-dark);
  color: var(--er-terracotta);
}

.er-account-link {
  display: none;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--er-radius-sm);
  color: var(--er-ink);
  border: 1px solid transparent;
}

@media (min-width: 640px) {
  .er-account-link {
    display: inline-flex;
  }
}

.er-account-link:hover {
  border-color: var(--er-border);
  background-color: var(--er-cream);
}

/* BUTTONS */
.er-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--er-font-body);
  font-size: 15px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--er-radius-sm);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.2s ease;
  text-decoration: none;
  border: 1px solid transparent;
}

.er-btn--primary {
  background-color: var(--er-ink);
  color: var(--er-paper);
  border-color: var(--er-espresso);
  box-shadow: var(--er-shadow-btn);
}

.er-btn--primary:hover {
  background-color: var(--er-terracotta);
  color: #fff;
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--er-espresso);
}

.er-btn--outline {
  background-color: transparent;
  color: var(--er-ink);
  border-color: var(--er-ink);
  box-shadow: 2px 2px 0 var(--er-border);
}

.er-btn--outline:hover {
  background-color: var(--er-cream);
  color: var(--er-ink);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--er-ink);
}

.er-btn--editorial-sm {
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  background-color: var(--er-cream);
  border: 1px solid var(--er-border-dark);
  color: var(--er-ink);
  border-radius: var(--er-radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.er-btn--editorial-sm:hover {
  background-color: var(--er-ink);
  color: var(--er-paper);
  border-color: var(--er-ink);
}

.er-btn--small {
  padding: 7px 14px;
  font-size: 13px;
}

.er-btn--header {
  display: none;
}

@media (min-width: 768px) {
  .er-btn--header {
    display: inline-flex;
  }
}

.er-btn--block {
  width: 100%;
}

/* MOBILE TOGGLE */
.er-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--er-border);
  padding: 8px;
  border-radius: var(--er-radius-sm);
  cursor: pointer;
}

@media (min-width: 960px) {
  .er-menu-toggle {
    display: none;
  }
}

.er-menu-bar {
  width: 100%;
  height: 2px;
  background-color: var(--er-ink);
  border-radius: 2px;
}

/* ========================================================
   MOBILE DRAWER NAVIGATION
   ======================================================== */
.er-mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
}

.er-mobile-drawer.is-open {
  display: block;
}

.er-mobile-drawer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(36, 35, 31, 0.6);
  backdrop-filter: blur(2px);
}

.er-mobile-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 85%;
  max-width: 360px;
  height: 100%;
  background-color: var(--er-paper);
  border-left: 2px solid var(--er-espresso);
  box-shadow: -4px 0 15px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
}

.er-mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--er-border);
}

.er-mobile-drawer-body {
  padding: 24px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.er-mobile-menu-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.er-mobile-menu-list a {
  font-family: var(--er-font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--er-ink);
  display: block;
  border-bottom: 1px dashed var(--er-border);
  padding-bottom: 10px;
}

.er-mobile-drawer-footer {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.er-mobile-contact-strip {
  font-size: 13px;
  text-align: center;
  color: var(--er-muted-text);
}

/* ========================================================
   EDITORIAL STAMPS & BADGES
   ======================================================== */
.er-stamp {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-family: var(--er-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px dashed var(--er-espresso);
  color: var(--er-espresso);
  background-color: rgba(232, 224, 209, 0.6);
  border-radius: var(--er-radius-sm);
  box-shadow: var(--er-shadow-stamp);
}

.er-stamp--small {
  font-size: 10px;
  padding: 2px 7px;
}

.er-stamp--terracotta {
  border-color: var(--er-terracotta);
  color: var(--er-terracotta);
}

.er-stamp--olive {
  border-color: var(--er-olive);
  color: var(--er-olive);
}

.er-stamp--recommended {
  background-color: var(--er-terracotta);
  color: #fff;
  border: 1px solid var(--er-espresso);
}

.er-badge {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--er-radius-sm);
  border: 1px solid var(--er-border);
  background-color: var(--er-cream);
  color: var(--er-ink);
}

.er-badge--free {
  background-color: #E2ECE5;
  color: var(--er-free-green);
  border-color: #B9D6C0;
}

.er-badge--paid {
  background-color: #F8ECE7;
  color: var(--er-paid-badge);
  border-color: #E6C2B4;
}

.er-badge--freemium {
  background-color: #EFEFE5;
  color: var(--er-olive);
  border-color: #D3D3BE;
}

/* ========================================================
   SECTION 2: SIGNATURE HERO
   ======================================================== */
.er-hero-section {
  padding: 60px 0 70px;
  border-bottom: 2px solid var(--er-border);
  position: relative;
  background-color: var(--er-paper);
}

.er-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 50px;
  align-items: center;
}

@media (min-width: 960px) {
  .er-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 60px;
  }
}

.er-eyebrow-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.er-eyebrow-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--er-espresso);
  font-family: var(--er-font-subheading, 'Shorif Sandwip', 'Fraunces', serif);
  letter-spacing: 0.3px;
  line-height: 1.4;
}

.er-hero-title {
  font-size: 34px;
  line-height: 1.25;
  margin-bottom: 22px;
  color: var(--er-ink);
}

@media (min-width: 768px) {
  .er-hero-title {
    font-size: 46px;
  }
}

@media (min-width: 1200px) {
  .er-hero-title {
    font-size: 52px;
  }
}

.er-hero-subtitle {
  font-size: 18px;
  line-height: 1.65;
  color: var(--er-muted-text);
  margin-bottom: 32px;
  max-width: 600px;
}

.er-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.er-hero-stats {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px dashed var(--er-border);
}

.er-stat-item {
  display: flex;
  flex-direction: column;
}

.er-stat-number {
  font-family: var(--er-font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--er-terracotta);
  line-height: 1.1;
}

.er-stat-label {
  font-size: 13px;
  color: var(--er-muted-text);
}

.er-stat-sep {
  color: var(--er-border-dark);
}

/* HERO RIGHT VISUAL: LAYERED EDITORIAL PAPER */
.er-analog-paper-card {
  position: relative;
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  padding: 16px;
  box-shadow: 8px 8px 0px var(--er-espresso);
  transform: rotate(0.8deg);
  transition: transform 0.3s ease;
}

.er-analog-paper-card:hover {
  transform: rotate(0deg);
}

.er-hero-stamp {
  position: absolute;
  top: -14px;
  right: 20px;
  z-index: 2;
  transform: rotate(-3deg);
}

.er-portrait-frame {
  border: 1px solid var(--er-border);
  background-color: var(--er-cream);
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.er-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.er-portrait-art-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  text-align: center;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--er-border) 1px, transparent 1px);
  background-size: 16px 16px;
  background-color: #EDE5D8;
}

.er-art-monogram {
  font-family: var(--er-font-display);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--er-espresso);
  margin-bottom: 6px;
}

.er-art-role {
  font-family: var(--er-font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--er-olive);
  margin-bottom: 16px;
}

.er-art-line {
  width: 60px;
  height: 2px;
  background-color: var(--er-terracotta);
  margin-bottom: 16px;
}

.er-art-location {
  font-size: 12px;
  font-weight: 600;
  color: var(--er-ink);
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.er-art-note {
  font-family: var(--er-font-display);
  font-style: italic;
  font-size: 16px;
  color: var(--er-muted-text);
}

.er-hero-dispatch-tag {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--er-border);
  font-size: 12px;
  color: var(--er-espresso);
  display: flex;
  align-items: center;
  gap: 8px;
}

.er-dispatch-icon {
  color: var(--er-terracotta);
}

/* ========================================================
   SECTION COMMON STYLES & HEADERS
   ======================================================== */
.er-section {
  padding: 65px 0 75px;
  border-bottom: 1px solid var(--er-border);
}

.er-section-header {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
  gap: 20px;
}

@media (min-width: 768px) {
  .er-section-header {
    flex-direction: row;
    align-items: flex-end;
  }
}

.er-section-sub {
  font-family: var(--er-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--er-terracotta);
  display: block;
  margin-bottom: 6px;
}

.er-section-title {
  font-size: 32px;
  color: var(--er-ink);
  line-height: 1.2;
}

@media (min-width: 768px) {
  .er-section-title {
    font-size: 38px;
  }
}

.er-section-desc {
  font-size: 16px;
  color: var(--er-muted-text);
  margin-top: 6px;
  margin-bottom: 0;
}

/* ========================================================
   SECTION 3: PERSONAL INTRODUCTION
   ======================================================== */
.er-section--intro {
  background-color: var(--er-cream);
}

.er-intro-box {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 960px) {
  .er-intro-box {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 60px;
    align-items: center;
  }
}

.er-intro-headline {
  font-size: 34px;
  margin-bottom: 16px;
}

.er-intro-lead {
  font-size: 17px;
  line-height: 1.7;
  color: var(--er-ink);
  margin-bottom: 24px;
}

.er-expertise-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}

.er-pill {
  background-color: var(--er-paper);
  border: 1px solid var(--er-border-dark);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--er-radius-sm);
}

.er-editorial-card {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  padding: 24px;
  box-shadow: 4px 4px 0px var(--er-espresso);
}

.er-card-title-mini {
  font-size: 18px;
  border-bottom: 1px solid var(--er-border);
  padding-bottom: 10px;
  margin-bottom: 16px;
}

.er-intro-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.er-intro-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background-color: var(--er-cream);
  border: 1px solid var(--er-border);
  border-radius: var(--er-radius-sm);
  font-weight: 500;
}

.er-intro-links a:hover {
  background-color: var(--er-ink);
  color: var(--er-paper);
}

.er-quote-box {
  border-left: 3px solid var(--er-terracotta);
  padding-left: 14px;
  font-style: italic;
  font-size: 14px;
  color: var(--er-espresso);
}

/* ========================================================
   CARDS GRIDS & CARD STYLES
   ======================================================== */
.er-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .er-cards-grid--courses,
  .er-cards-grid--projects,
  .er-cards-grid--posts {
    grid-template-columns: repeat(2, 1fr);
  }
  .er-cards-grid--resources {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .er-cards-grid--courses,
  .er-cards-grid--projects,
  .er-cards-grid--posts {
    grid-template-columns: repeat(3, 1fr);
  }
  .er-cards-grid--resources {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* COMMON EDITORIAL CARD */
.er-card {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  border-radius: var(--er-radius-sm);
  box-shadow: var(--er-shadow-card);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.er-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--er-shadow-hover);
}

.er-card-media {
  position: relative;
  background-color: var(--er-cream);
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--er-border);
}

.er-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.er-card:hover .er-card-img {
  transform: scale(1.03);
}

.er-card-media-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, var(--er-border) 1px, transparent 1px);
  background-size: 12px 12px;
  background-color: #EFE8DC;
}

.er-media-monogram {
  font-family: var(--er-font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--er-espresso);
}

.er-media-label {
  font-family: var(--er-font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--er-muted-text);
}

.er-card-badge-strip {
  position: absolute;
  top: 10px;
  left: 10px;
  display: flex;
  gap: 6px;
}

.er-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.er-card-meta-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--er-muted-text);
  padding: 16px 20px 0;
}

.er-card--course .er-card-meta-top {
  padding: 0;
}

.er-card-title {
  font-size: 19px;
  line-height: 1.35;
  margin-bottom: 10px;
}

.er-card-title a {
  color: var(--er-ink);
}

.er-card-title a:hover {
  color: var(--er-terracotta);
}

.er-card-excerpt {
  font-size: 14px;
  color: var(--er-muted-text);
  line-height: 1.55;
  margin-bottom: 14px;
}

.er-card-footer {
  padding: 14px 20px;
  border-top: 1px dashed var(--er-border);
  background-color: var(--er-paper);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.er-card-price {
  font-family: var(--er-font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--er-espresso);
}

.er-price--free {
  color: var(--er-free-green);
  font-size: 15px;
}

.er-card-price .er-price-regular {
  font-size: 13px;
  font-weight: 400;
  color: var(--er-muted-text, #8C7C6D);
  text-decoration: line-through;
  margin-left: 6px;
  font-family: var(--er-font-subhead, 'Shorif Sandwip', serif);
}

/* RESOURCE CARD SPECIFICS */
.er-card--resource {
  background-color: var(--er-white);
}

.er-card--featured {
  border-top: 3px solid var(--er-terracotta);
}

.er-card-badges-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.er-resource-platform-line {
  font-size: 12px;
  color: var(--er-muted-text);
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.er-platform-name {
  font-weight: 600;
  color: var(--er-ink);
}

.er-version-tag {
  font-family: var(--er-font-mono);
  font-size: 11px;
}

/* PROJECT CARD SPECIFICS */
.er-project-tools-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.er-tool-pill {
  font-size: 11px;
  font-family: var(--er-font-mono);
  background-color: var(--er-cream);
  border: 1px solid var(--er-border);
  padding: 2px 7px;
  border-radius: var(--er-radius-sm);
  color: var(--er-espresso);
}

.er-card-role-strip {
  font-size: 12px;
  font-weight: 600;
  color: var(--er-terracotta);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

/* POST CARD SPECIFICS */
.er-read-more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
}

/* ========================================================
   SECTION 5: FREE LEARNING NOTICEBOARD
   ======================================================== */
.er-section--noticeboard {
  background-color: #EBE5D8;
  background-image: repeating-linear-gradient(0deg, transparent, transparent 31px, var(--er-border) 31px, var(--er-border) 32px);
}

.er-noticeboard {
  background-color: var(--er-white);
  border: 2px solid var(--er-espresso);
  padding: 36px 30px;
  box-shadow: 6px 6px 0px var(--er-espresso);
}

.er-noticeboard-header {
  margin-bottom: 30px;
  border-bottom: 2px dashed var(--er-border-dark);
  padding-bottom: 20px;
}

.er-noticeboard-title {
  font-size: 32px;
  margin-top: 10px;
  margin-bottom: 8px;
}

.er-noticeboard-lead {
  font-size: 16px;
  color: var(--er-muted-text);
  max-width: 680px;
}

.er-noticeboard-items {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .er-noticeboard-items {
    grid-template-columns: repeat(2, 1fr);
  }
}

.er-notice-item {
  position: relative;
  background-color: var(--er-paper);
  border: 1px solid var(--er-border-dark);
  padding: 22px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  box-shadow: 2px 2px 0px rgba(0,0,0,0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.er-notice-item:hover {
  transform: translateY(-2px);
  box-shadow: 4px 4px 0px var(--er-border-dark);
}

.er-notice-pin {
  position: absolute;
  top: -12px;
  left: 14px;
  font-size: 22px;
  flex-shrink: 0;
  z-index: 2;
  filter: drop-shadow(0 2px 2px rgba(36, 35, 31, 0.25));
  pointer-events: none;
  line-height: 1;
}

/* Small Course Notice Thumbnail */
.er-notice-thumb {
  width: 120px;
  height: 85px;
  flex-shrink: 0;
  border-radius: var(--er-radius-sm, 3px);
  border: 1.5px solid var(--er-espresso, #49362D);
  box-shadow: 2px 2px 0px var(--er-espresso, #49362D);
  overflow: hidden;
  background-color: var(--er-paper-card, #EDE7DB);
  display: block;
  text-decoration: none;
  margin-top: 2px;
}

.er-notice-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.er-notice-item:hover .er-notice-thumb-img {
  transform: scale(1.08);
}

.er-notice-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #EDE7DB 0%, #DED6C5 100%);
  color: var(--er-espresso, #49362D);
  font-size: 11px;
  font-weight: 600;
  gap: 3px;
  font-family: var(--er-font-subhead, 'Shorif Sandwip', serif);
}

.er-notice-thumb-icon {
  font-size: 24px;
  line-height: 1;
}

.er-notice-content {
  flex: 1;
  min-width: 0;
}

.er-notice-title {
  font-size: 18px;
  margin: 6px 0;
  line-height: 1.35;
}

.er-notice-title a {
  color: var(--er-ink);
  text-decoration: none;
  transition: color 0.2s ease;
}

.er-notice-title a:hover {
  color: var(--er-terracotta, #AD654B);
}

.er-notice-desc {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--er-muted-text);
  margin-bottom: 12px;
}

@media (max-width: 480px) {
  .er-notice-item {
    flex-direction: column;
    gap: 14px;
    padding-top: 28px;
  }
  .er-notice-thumb {
    width: 100%;
    height: 140px;
  }
}

/* ========================================================
   SECTION 6: RESOURCE QUICK PILLS
   ======================================================== */
.er-resource-type-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}

.er-nav-pill {
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--er-radius-sm);
  background-color: var(--er-cream);
  border: 1px solid var(--er-border);
  color: var(--er-ink);
  transition: all 0.15s ease;
}

.er-nav-pill:hover,
.er-nav-pill.is-active {
  background-color: var(--er-ink);
  color: var(--er-paper);
  border-color: var(--er-ink);
}

/* ========================================================
   SECTION 8: PROFESSIONAL JOURNEY
   ======================================================== */
.er-journey-card {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  padding: 40px;
  box-shadow: 5px 5px 0px var(--er-espresso);
}

.er-journey-header {
  border-bottom: 1px solid var(--er-border);
  padding-bottom: 20px;
  margin-bottom: 30px;
}

.er-journey-title {
  font-size: 32px;
  margin-top: 8px;
}

.er-journey-sub {
  color: var(--er-muted-text);
  margin-top: 4px;
}

.er-journey-timeline {
  display: flex;
  flex-direction: column;
  gap: 30px;
  position: relative;
}

.er-journey-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 20px;
  width: 2px;
  background-color: var(--er-border);
}

.er-timeline-item {
  display: flex;
  gap: 25px;
  position: relative;
}

.er-timeline-badge {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  background-color: var(--er-paper);
  border: 2px solid var(--er-espresso);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--er-espresso);
  z-index: 1;
}

.er-timeline-content {
  flex: 1;
  background-color: var(--er-paper);
  border: 1px solid var(--er-border);
  padding: 18px 22px;
  border-radius: var(--er-radius-sm);
}

.er-timeline-role {
  font-size: 18px;
  font-weight: 700;
  color: var(--er-ink);
}

.er-timeline-company a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  color: var(--er-terracotta);
  font-size: 14px;
  margin-bottom: 8px;
}

.er-timeline-desc {
  font-size: 14px;
  color: var(--er-muted-text);
  margin-bottom: 0;
}

/* ========================================================
   SECTION 10: VINTAGE POSTCARD
   ======================================================== */
.er-section--postcard {
  background-color: var(--er-cream);
  padding: 70px 0;
}

.er-postcard {
  background-color: var(--er-white);
  border: 2px solid var(--er-espresso);
  box-shadow: 8px 8px 0px var(--er-espresso);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  position: relative;
}

@media (min-width: 860px) {
  .er-postcard {
    grid-template-columns: 1fr auto 1fr;
    gap: 30px;
    align-items: center;
  }
}

.er-postcard-divider {
  display: none;
  width: 2px;
  height: 100%;
  background: repeating-linear-gradient(180deg, var(--er-border-dark), var(--er-border-dark) 10px, transparent 10px, transparent 20px);
}

@media (min-width: 860px) {
  .er-postcard-divider {
    display: block;
  }
}

.er-postcard-title {
  font-size: 26px;
  line-height: 1.3;
  margin: 12px 0;
}

.er-postcard-text {
  font-size: 15px;
  color: var(--er-muted-text);
}

.er-postcard-signature {
  margin-top: 20px;
}

.er-sig-hand {
  font-family: var(--er-font-display);
  font-size: 24px;
  font-style: italic;
  font-weight: 700;
  color: var(--er-espresso);
}

.er-sig-role {
  font-size: 12px;
  font-family: var(--er-font-mono);
  color: var(--er-muted-text);
}

.er-postcard-stamp-box {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
  margin-bottom: 24px;
}

.er-postage-stamp {
  width: 70px;
  height: 85px;
  border: 2px dashed var(--er-espresso);
  background-color: var(--er-paper);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.1);
  transform: rotate(2deg);
}

.er-stamp-value {
  font-family: var(--er-font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--er-terracotta);
}

.er-stamp-text {
  font-size: 9px;
  font-family: var(--er-font-mono);
  color: var(--er-espresso);
  text-align: center;
}

.er-postal-cancellation {
  font-family: var(--er-font-mono);
  font-size: 10px;
  color: var(--er-muted-text);
  border: 1px solid var(--er-border-dark);
  border-radius: 50%;
  width: 70px;
  height: 70px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  transform: rotate(-10deg);
}

.er-field-label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
}

.er-input-with-btn {
  display: flex;
  gap: 8px;
}

.er-input-text, .er-filter-input, .er-textarea {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--er-paper);
  border: 1px solid var(--er-border-dark);
  border-radius: var(--er-radius-sm);
  font-family: var(--er-font-body);
  font-size: 15px;
  color: var(--er-ink);
}

.er-input-text:focus, .er-filter-input:focus, .er-textarea:focus {
  background-color: #fff;
  border-color: var(--er-terracotta);
}

.er-privacy-notice {
  font-size: 12px;
  color: var(--er-muted-text);
  margin-top: 10px;
  margin-bottom: 0;
}

/* ========================================================
   SECTION 11: FOOTER
   ======================================================== */
.er-site-footer {
  background-color: #1F1E1B;
  color: #DDD4C6;
  border-top: 3px solid var(--er-espresso);
  padding-top: 0;
}

.er-footer-banner {
  background-color: var(--er-espresso);
  border-bottom: 1px solid #382A23;
  padding: 24px 0;
}

.er-footer-banner-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

@media (min-width: 768px) {
  .er-footer-banner-inner {
    flex-direction: row;
    align-items: center;
  }
}

.er-footer-banner-title {
  color: var(--er-paper);
  font-size: 20px;
  margin-top: 6px;
  margin-bottom: 0;
}

.er-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-top: 60px;
  padding-bottom: 60px;
}

@media (min-width: 640px) {
  .er-footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .er-footer-grid {
    grid-template-columns: 1.4fr 1.2fr 0.9fr 1fr;
    gap: 40px;
  }
}

.er-footer-wordmark {
  font-family: var(--er-font-display);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--er-paper);
  line-height: 1;
  margin-bottom: 4px;
}

.er-footer-role-label {
  font-family: var(--er-font-mono);
  font-size: 12px;
  color: var(--er-terracotta);
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.er-footer-bio {
  font-size: 14px;
  color: #B2A796;
  line-height: 1.6;
  margin-bottom: 20px;
}

.er-footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.er-footer-label {
  font-size: 12px;
  color: #8C8273;
}

.er-footer-phone-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--er-paper);
}

.er-footer-phone-link:hover {
  color: var(--er-terracotta);
}

.er-footer-heading {
  font-family: var(--er-font-display);
  font-size: 17px;
  color: var(--er-paper);
  border-bottom: 1px solid #382A23;
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.er-affiliation-card {
  background-color: #272521;
  border: 1px solid #3A362F;
  padding: 12px 14px;
  border-radius: var(--er-radius-sm);
  margin-bottom: 12px;
}

.er-affiliation-role {
  font-size: 12px;
  color: var(--er-terracotta);
  font-weight: 600;
}

.er-affiliation-org a {
  color: var(--er-paper);
  font-weight: 700;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.er-affiliation-desc {
  font-size: 12px;
  color: #9C9181;
  margin-top: 4px;
  margin-bottom: 0;
}

.er-footer-menu, .er-social-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.er-footer-menu a, .er-social-list a {
  color: #B2A796;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.er-footer-menu a:hover, .er-social-list a:hover {
  color: var(--er-paper);
  padding-left: 3px;
}

.er-footer-wa-box {
  margin-top: 16px;
}

.er-footer-bottom {
  border-top: 1px solid #332F2A;
  padding: 20px 0;
  font-size: 13px;
  color: #8C8273;
}

.er-footer-bottom-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: center;
}

@media (min-width: 768px) {
  .er-footer-bottom-inner {
    flex-direction: row;
    text-align: left;
  }
}

.er-legal-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.er-legal-links a {
  color: #8C8273;
}

.er-legal-links a:hover {
  color: var(--er-paper);
}

.er-pipe, .er-dot {
  color: #554D43;
}

/* ========================================================
   SEARCH MODAL OVERLAY
   ======================================================== */
.er-search-modal {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: none;
}

.er-search-modal.is-open {
  display: block;
}

.er-search-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(36, 35, 31, 0.7);
  backdrop-filter: blur(4px);
}

.er-search-dialog {
  position: absolute;
  top: 12%;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 640px;
  background-color: var(--er-paper);
  border: 2px solid var(--er-espresso);
  box-shadow: 8px 8px 0px var(--er-espresso);
  padding: 30px;
}

.er-search-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.er-search-title {
  font-size: 24px;
  margin-top: 6px;
}

.er-search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.er-search-input-icon {
  position: absolute;
  left: 14px;
  color: var(--er-muted-text);
}

.er-search-field {
  width: 100%;
  padding: 14px 14px 14px 46px;
  font-size: 16px;
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  border-radius: var(--er-radius-sm);
  color: var(--er-ink);
}

.er-search-submit {
  position: absolute;
  right: 6px;
  padding: 8px 16px;
}

.er-search-quick-links {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.er-quick-label {
  font-size: 13px;
  color: var(--er-muted-text);
  font-weight: 600;
}

.er-quick-pill {
  font-size: 12px;
  padding: 4px 10px;
  background-color: var(--er-cream);
  border: 1px solid var(--er-border);
  border-radius: var(--er-radius-sm);
  color: var(--er-ink);
}

.er-quick-pill:hover {
  background-color: var(--er-ink);
  color: var(--er-paper);
}

/* ========================================================
   BREADCRUMBS & ARCHIVE HEADERS
   ======================================================== */
.er-breadcrumbs {
  font-size: 13px;
  color: var(--er-muted-text);
  margin-bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.er-breadcrumb-sep {
  color: var(--er-border-dark);
}

.er-breadcrumb-current {
  color: var(--er-ink);
  font-weight: 600;
}

.er-archive-header-wrap {
  padding: 50px 0 35px;
  background-color: var(--er-cream);
  border-bottom: 1px solid var(--er-border);
  margin-bottom: 40px;
}

.er-archive-title {
  font-size: 36px;
  margin: 10px 0 8px;
}

.er-archive-desc {
  font-size: 16px;
  color: var(--er-muted-text);
  max-width: 680px;
  margin-bottom: 0;
}

/* FILTER BAR IN ARCHIVES */
.er-filter-bar {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  padding: 20px;
  margin-bottom: 30px;
  box-shadow: 3px 3px 0 var(--er-cream);
}

.er-filter-row-top {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 16px;
}

@media (min-width: 860px) {
  .er-filter-row-top {
    flex-direction: row;
    align-items: center;
  }
}

.er-filter-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
}

.er-filter-search .er-btn-icon {
  position: absolute;
  right: 4px;
}

.er-filter-type-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.er-tab-pill {
  background-color: var(--er-paper);
  border: 1px solid var(--er-border);
  color: var(--er-ink);
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--er-radius-sm);
  cursor: pointer;
}

.er-tab-pill:hover, .er-tab-pill.is-active {
  background-color: var(--er-ink);
  color: var(--er-paper);
  border-color: var(--er-ink);
}

.er-filter-row-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--er-border);
}

.er-select-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
}

.er-filter-select {
  padding: 6px 10px;
  border-radius: var(--er-radius-sm);
  border: 1px solid var(--er-border-dark);
  background-color: var(--er-paper);
  font-family: var(--er-font-body);
  font-size: 13px;
  color: var(--er-ink);
}

.er-results-info {
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--er-espresso);
}

.er-nonjs-submit {
  margin-left: auto;
}

/* PAGINATION */
.er-pagination {
  margin-top: 50px;
  display: flex;
  justify-content: center;
}

.er-pagination ul {
  display: flex;
  list-style: none;
  gap: 6px;
}

.er-pagination a, .er-pagination span.current {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 10px;
  border: 1px solid var(--er-border-dark);
  background-color: var(--er-white);
  color: var(--er-ink);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--er-radius-sm);
}

.er-pagination span.current {
  background-color: var(--er-ink);
  color: var(--er-paper);
  border-color: var(--er-ink);
}

.er-pagination a:hover {
  background-color: var(--er-cream);
}

/* ========================================================
   ARCHIVE PAGES & FOOTER BREATHING MARGINS
   ======================================================== */
.er-resource-archive-body,
.er-blog-archive-body,
.er-courses-archive-body,
.er-projects-archive-body,
.er-search-results-body {
  padding-bottom: 95px !important;
  margin-bottom: 0 !important;
}

.er-cards-grid--resources,
.er-cards-grid--posts,
.er-cards-grid--courses,
.er-cards-grid--projects {
  margin-bottom: 25px;
}

@media (max-width: 991px) {
  .er-resource-archive-body,
  .er-blog-archive-body,
  .er-courses-archive-body,
  .er-projects-archive-body,
  .er-search-results-body {
    padding-bottom: 70px !important;
  }
}

@media (max-width: 640px) {
  .er-resource-archive-body,
  .er-blog-archive-body,
  .er-courses-archive-body,
  .er-projects-archive-body,
  .er-search-results-body {
    padding-bottom: 50px !important;
  }
}

/* ========================================================
   SINGLE RESOURCE & PROJECT LAYOUTS
   ======================================================== */
/* ========================================================
   SINGLE RESOURCE SHOWCASE (MEDIUM PROPORTIONED COVER)
   ======================================================== */
.er-resource-hero-wrap {
  background-color: var(--er-cream);
  border-bottom: 2px solid var(--er-border);
  padding: 40px 0 50px;
}

.er-resource-showcase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

@media (min-width: 920px) {
  .er-resource-showcase-grid {
    grid-template-columns: 480px 1fr;
    gap: 48px;
  }
}

.er-showcase-media-col {
  width: 100%;
}

.er-showcase-frame {
  background-color: var(--er-white);
  border: 2px solid var(--er-espresso);
  box-shadow: 6px 6px 0px var(--er-espresso);
  border-radius: var(--er-radius-sm);
  padding: 12px;
  position: relative;
  width: 100%;
  max-width: 500px;
  height: 310px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: 0 auto;
}

.er-showcase-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background-color: #fff;
  border-radius: 2px;
}

.er-showcase-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  height: 100%;
  background-color: #EFE8DC;
}

.er-placeholder-icon {
  font-size: 42px;
  line-height: 1;
}

.er-placeholder-label {
  font-family: var(--er-font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--er-muted-text);
}

.er-showcase-corner-stamp {
  position: absolute;
  top: 8px;
  right: 8px;
  background-color: var(--er-espresso);
  color: #fff;
  font-family: var(--er-font-mono);
  font-size: 9px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 2px;
  letter-spacing: 0.5px;
  z-index: 2;
}

.er-showcase-info-col {
  display: flex;
  flex-direction: column;
}

.er-resource-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.er-resource-hero-title {
  font-size: 30px;
  line-height: 1.25;
  color: var(--er-ink);
  margin: 0 0 14px;
}

@media (min-width: 768px) {
  .er-resource-hero-title {
    font-size: 38px;
  }
}

.er-resource-hero-lead {
  font-size: 17px;
  line-height: 1.65;
  color: var(--er-muted-text);
  margin-bottom: 22px;
  max-width: 650px;
}

.er-resource-cta-block {
  margin-bottom: 24px;
}

.er-download-action-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.er-btn--download-zip {
  background-color: var(--er-ink);
  color: var(--er-paper);
  padding: 12px 24px;
  font-size: 15px;
}

.er-btn--download-zip:hover {
  background-color: var(--er-terracotta);
  color: #fff;
}

.er-btn-filesize {
  font-weight: 400;
  opacity: 0.9;
  font-size: 13px;
  margin-left: 4px;
}

.er-download-filename-note {
  margin-top: 10px;
  font-size: 13px;
  color: var(--er-muted-text);
}

.er-download-filename-note code {
  background-color: var(--er-paper);
  border: 1px solid var(--er-border-dark);
  padding: 2px 7px;
  border-radius: 3px;
  font-family: var(--er-font-mono);
  color: var(--er-espresso);
}

.er-quick-specs-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  padding-top: 18px;
  border-top: 1px dashed var(--er-border);
}

.er-spec-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.er-spec-label {
  font-size: 11px;
  font-family: var(--er-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--er-muted-text);
}

.er-spec-val {
  font-size: 14px;
  font-weight: 600;
  color: var(--er-ink);
}

/* DETAILS SECTION */
.er-resource-details-section {
  padding: 50px 0 70px;
}

.er-detail-card {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  box-shadow: 4px 4px 0px var(--er-cream);
  padding: 30px 34px;
  border-radius: var(--er-radius-sm);
  margin-bottom: 30px;
}

.er-detail-card--guide {
  border-left: 4px solid var(--er-espresso);
}

.er-detail-card--safety {
  background-color: #F8FBF9;
  border-left: 4px solid var(--er-free-green);
}

.er-detail-header {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--er-border);
  padding-bottom: 12px;
  margin-bottom: 18px;
}

.er-detail-icon {
  font-size: 24px;
}

.er-detail-heading {
  font-size: 22px;
  margin: 0;
  color: var(--er-ink);
}

.er-detail-text {
  font-size: 16px;
  line-height: 1.8;
  color: #2D2B26;
}

/* SUPPORT STRIP & FACEBOOK AUTHOR CONNECT */
.er-support-strip {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  box-shadow: 4px 4px 0px var(--er-cream);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 30px;
  border-radius: var(--er-radius-sm);
}

.er-support-author-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.er-support-avatar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  padding: 4px 10px 4px 4px;
  border-radius: 40px;
  transition: all 0.2s ease;
}

.er-support-avatar-link:hover {
  background-color: var(--er-paper);
}

.er-support-avatar-box {
  position: relative;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--er-espresso);
  box-shadow: 2px 2px 0px var(--er-espresso);
  overflow: visible;
  background-color: #fff;
  flex-shrink: 0;
}

.er-support-avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}

.er-support-avatar-fallback {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: var(--er-cream);
  color: var(--er-espresso);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--er-font-mono);
  font-size: 16px;
}

.er-support-live-badge {
  position: absolute;
  bottom: 0px;
  right: 0px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: #2e7d32;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.1);
}

.er-support-author-info {
  display: flex;
  flex-direction: column;
}

.er-support-author-label {
  font-size: 11px;
  font-family: var(--er-font-mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--er-muted-text);
  line-height: 1.2;
}

.er-support-author-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--er-ink);
  line-height: 1.3;
}

.er-support-text {
  flex: 1;
  min-width: 220px;
}

.er-support-text strong {
  display: block;
  font-size: 16px;
  color: var(--er-ink);
  margin-bottom: 2px;
}

.er-support-text span {
  font-size: 13px;
  color: var(--er-muted-text);
  line-height: 1.5;
}

.er-support-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.er-btn--facebook {
  background-color: #1877F2;
  color: #ffffff !important;
  border: 1px solid #0c57c2;
  box-shadow: 3px 3px 0px var(--er-espresso);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  padding: 9px 18px;
  font-weight: 600;
  border-radius: var(--er-radius-sm);
  transition: all 0.15s ease;
}

.er-btn--facebook:hover {
  background-color: #0d6efd;
  color: #ffffff !important;
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px var(--er-espresso);
}

.er-project-single-header {
  background-color: var(--er-cream);
  border-bottom: 2px solid var(--er-border);
  padding: 40px 0;
  margin-bottom: 40px;
}

.er-project-title {
  font-size: 34px;
  margin: 12px 0 10px;
}

.er-project-lead {
  font-size: 17px;
  color: var(--er-muted-text);
  margin-bottom: 24px;
}

.er-spec-header {
  border-bottom: 1px solid var(--er-border);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.er-spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.er-spec-list li {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  border-bottom: 1px dashed var(--er-border);
  padding-bottom: 6px;
}

.er-spec-label {
  color: var(--er-muted-text);
}

.er-spec-val {
  font-weight: 600;
  color: var(--er-ink);
}

/* PROSE / CONTENT STYLING */
.er-prose {
  font-size: 16px;
  line-height: 1.8;
  color: #2D2B26;
}

.er-prose h2 {
  font-size: 26px;
  margin-top: 36px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--er-border);
  padding-bottom: 6px;
}

.er-prose h3 {
  font-size: 21px;
  margin-top: 26px;
  margin-bottom: 10px;
}

.er-prose p {
  margin-bottom: 1.25rem;
}

.er-prose ul, .er-prose ol {
  margin-bottom: 1.25rem;
  padding-left: 24px;
}

.er-prose li {
  margin-bottom: 6px;
}

.er-prose blockquote {
  border-left: 4px solid var(--er-terracotta);
  background-color: var(--er-cream);
  padding: 16px 20px;
  margin: 24px 0;
  font-style: italic;
  font-size: 17px;
}

.er-prose pre, .er-prose code {
  font-family: var(--er-font-mono);
  background-color: #272521;
  color: #E8E0D1;
  border-radius: var(--er-radius-sm);
}

.er-prose code {
  padding: 2px 6px;
  font-size: 0.9em;
}

.er-prose pre {
  padding: 16px;
  overflow-x: auto;
  margin: 20px 0;
}

/* CALLOUTS */
.er-editorial-callout {
  display: flex;
  gap: 16px;
  padding: 20px;
  border-radius: var(--er-radius-sm);
  margin: 30px 0;
}

.er-callout--guide {
  background-color: #EBF3ED;
  border: 1px solid #B7D9BF;
}

.er-callout--safety {
  background-color: #F8ECE7;
  border: 1px solid #E4C1B3;
}

.er-callout-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.er-callout-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.er-related-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 2px dashed var(--er-border);
}

.er-related-title {
  font-size: 24px;
  margin-bottom: 24px;
}

/* ========================================================
   ABOUT PAGE SPECIFICS
   ======================================================== */
.er-about-page-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 50px;
  margin-bottom: 80px;
}

@media (min-width: 880px) {
  .er-about-page-layout {
    grid-template-columns: 1.35fr 0.65fr;
  }
}

.er-about-quote {
  font-size: 26px;
  color: var(--er-espresso);
  margin: 12px 0 20px;
  line-height: 1.3;
}

.er-lead-paragraph {
  font-size: 18px;
  line-height: 1.7;
}

.er-highlight-stat-box {
  background-color: var(--er-white);
  border: 2px solid var(--er-espresso);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 30px 0;
  box-shadow: 4px 4px 0px var(--er-espresso);
}

.er-stat-big {
  font-family: var(--er-font-display);
  font-size: 48px;
  font-weight: 800;
  color: var(--er-terracotta);
  line-height: 1;
}

.er-org-box {
  background-color: var(--er-cream);
  border: 1px solid var(--er-border-dark);
  padding: 20px;
  margin-bottom: 16px;
  border-radius: var(--er-radius-sm);
}

.er-org-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.er-org-badge {
  font-family: var(--er-font-mono);
  font-size: 11px;
  padding: 2px 8px;
  background-color: var(--er-espresso);
  color: #fff;
  border-radius: var(--er-radius-sm);
}

.er-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
  color: var(--er-terracotta);
}

.er-about-photo-card {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  padding: 16px;
  box-shadow: 5px 5px 0px var(--er-espresso);
  margin-bottom: 24px;
}

.er-about-avatar-placeholder {
  height: 280px;
  background-color: #EFE8DC;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--er-border);
  margin-top: 10px;
  margin-bottom: 14px;
}

.er-avatar-initials {
  font-family: var(--er-font-display);
  font-size: 42px;
  font-weight: 800;
  color: var(--er-espresso);
}

.er-about-sidebar-meta {
  text-align: center;
}

.er-sidebar-name {
  font-family: var(--er-font-display);
  font-size: 20px;
  font-weight: 700;
}

.er-sidebar-alt {
  font-size: 13px;
  color: var(--er-muted-text);
}

.er-sidebar-location {
  font-size: 13px;
  margin-top: 4px;
  font-weight: 500;
}

.er-sidebar-card {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 3px 3px 0 var(--er-cream);
}

.er-sidebar-card-title {
  font-size: 16px;
  border-bottom: 1px solid var(--er-border);
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.er-sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.er-sidebar-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 500;
  padding: 4px 0;
}

/* ========================================================
   CONTACT PAGE SPECIFICS
   ======================================================== */
.er-contact-page-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 80px;
}

@media (min-width: 860px) {
  .er-contact-page-layout {
    grid-template-columns: 0.8fr 1.2fr;
  }
}

.er-contact-phone-display {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 700;
  color: var(--er-ink);
  margin: 10px 0;
}

.er-contact-phone-display:hover {
  color: var(--er-terracotta);
}

.er-contact-intl {
  font-size: 13px;
  color: var(--er-muted-text);
  margin-bottom: 16px;
}

.er-contact-email-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--er-ink);
  margin-top: 6px;
}

.er-contact-form-box {
  background-color: var(--er-white);
  border: 2px solid var(--er-espresso);
  box-shadow: 6px 6px 0px var(--er-espresso);
  padding: 35px;
}

.er-form-title {
  font-size: 26px;
  margin-bottom: 6px;
}

.er-form-sub {
  color: var(--er-muted-text);
  margin-bottom: 24px;
}

.er-form-group {
  margin-bottom: 20px;
}

.er-form-label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}

.er-req {
  color: var(--er-terracotta);
}

.er-textarea {
  min-height: 130px;
  resize: vertical;
}

.er-form-submit-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

@media (min-width: 580px) {
  .er-form-submit-wrap {
    flex-direction: row;
    align-items: center;
  }
}

.er-security-note {
  font-size: 12px;
  color: var(--er-muted-text);
}

/* ALERTS */
.er-alert {
  padding: 14px 18px;
  border-radius: var(--er-radius-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.er-alert--success {
  background-color: #E2F0E5;
  border: 1px solid #ACD4B3;
  color: #21592A;
}

.er-alert--error {
  background-color: #FBECE8;
  border: 1px solid #E8BEB2;
  color: #7B2F1C;
}

/* ========================================================
   EMPTY STATE & 404
   ======================================================== */
.er-empty-state {
  grid-column: 1 / -1;
  background-color: var(--er-white);
  border: 1px dashed var(--er-border-dark);
  padding: 50px 30px;
  text-align: center;
  margin: 20px 0;
}

.er-empty-state h3 {
  font-size: 20px;
  margin: 12px 0 8px;
}

.er-empty-state p {
  color: var(--er-muted-text);
  margin-bottom: 0;
}

.er-404-container {
  padding: 90px 20px;
  display: flex;
  justify-content: center;
}

.er-404-box {
  background-color: var(--er-white);
  border: 2px solid var(--er-espresso);
  box-shadow: 8px 8px 0px var(--er-espresso);
  padding: 50px 40px;
  max-width: 620px;
  text-align: center;
}

.er-404-big-number {
  font-family: var(--er-font-display);
  font-size: 80px;
  font-weight: 800;
  color: var(--er-terracotta);
  line-height: 1;
  margin: 10px 0;
}

.er-404-title {
  font-size: 26px;
  margin-bottom: 12px;
}

.er-404-desc {
  color: var(--er-muted-text);
  margin-bottom: 24px;
}

.er-404-search {
  margin-bottom: 28px;
}

.er-404-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

/* ========================================================
   SECTION: YOUTUBE VIDEO TUTORIALS ARCHIVE
   ======================================================== */
.er-section--tutorials {
  background-color: var(--er-cream);
  border-top: 1px solid var(--er-border);
  border-bottom: 2px solid var(--er-border-dark);
  padding: 60px 0 70px;
}

.er-cards-grid--tutorials {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 30px;
}

@media (min-width: 680px) {
  .er-cards-grid--tutorials {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1040px) {
  .er-cards-grid--tutorials {
    grid-template-columns: repeat(3, 1fr);
  }
  .er-cards-grid--4col {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 18px !important;
  }
}

/* VIDEO CARD */
.er-card--video {
  background-color: var(--er-white);
  border: 1px solid var(--er-border-dark);
  box-shadow: 4px 4px 0px var(--er-espresso);
  border-radius: var(--er-radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.er-card--video:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px var(--er-espresso);
}

.er-video-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #1a1918;
  overflow: hidden;
  cursor: pointer;
}

.er-video-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  display: block;
}

.er-card--video:hover .er-video-thumb-img {
  transform: scale(1.04);
}

.er-video-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #24231F;
  color: #fff;
  font-size: 36px;
}

/* PLAY BUTTON OVERLAY */
.er-video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  background-color: #FF0000;
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid #ffffff;
  box-shadow: 0 4px 14px rgba(0,0,0,0.4);
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 2;
}

.er-card--video:hover .er-video-play-btn {
  transform: translate(-50%, -50%) scale(1.15);
  background-color: #D32F2F;
}

.er-video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background-color: rgba(36, 35, 31, 0.85);
  color: #ffffff;
  font-family: var(--er-font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 2px;
  z-index: 2;
}

.er-video-topic-tag {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background-color: rgba(243, 239, 229, 0.92);
  color: var(--er-ink);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 2px;
  border: 1px solid var(--er-border);
  z-index: 2;
}

.er-video-card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: space-between;
}

.er-video-title {
  font-size: 16px;
  line-height: 1.45;
  margin: 0 0 14px;
  color: var(--er-ink);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 46px;
}

.er-video-title a {
  color: var(--er-ink);
  text-decoration: none;
  transition: color 0.15s ease;
}

.er-video-title a:hover {
  color: var(--er-terracotta);
}

.er-video-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px dashed var(--er-border);
  padding-top: 14px;
}

.er-video-yt-link {
  font-size: 12px;
  font-family: var(--er-font-mono);
  font-weight: 600;
  color: var(--er-muted-text);
  display: inline-flex;
  align-items: center;
  gap: 3px;
  transition: color 0.15s ease;
}

.er-video-yt-link:hover {
  color: #FF0000;
}

/* YOUTUBE BUTTONS */
.er-btn--youtube {
  background-color: #FF0000;
  color: #ffffff !important;
  border: 1px solid #c90000;
  box-shadow: 2px 2px 0px var(--er-espresso);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  transition: all 0.15s ease;
}

.er-btn--youtube:hover {
  background-color: #c90000;
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0px var(--er-espresso);
}

.er-btn--youtube-hero {
  background-color: #FF0000;
  color: #ffffff !important;
  border: 2px solid var(--er-espresso);
  box-shadow: 4px 4px 0px var(--er-espresso);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: var(--er-radius-sm);
  text-decoration: none;
  transition: all 0.15s ease;
}

.er-btn--youtube-hero:hover {
  background-color: #d32f2f;
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px var(--er-espresso);
}

/* BOTTOM CHANNEL PROMO STRIP */
.er-channel-promo-strip {
  background-color: var(--er-white);
  border: 2px solid var(--er-espresso);
  box-shadow: 6px 6px 0px var(--er-espresso);
  padding: 24px 30px;
  border-radius: var(--er-radius-sm);
  margin-top: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  flex-wrap: wrap;
}

.er-channel-promo-left {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 1;
  min-width: 260px;
}

.er-channel-icon-badge {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background-color: #FF0000;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 2px 2px 0px var(--er-espresso);
}

.er-channel-promo-title {
  display: block;
  font-size: 18px;
  color: var(--er-ink);
  line-height: 1.35;
  margin-bottom: 4px;
}

.er-channel-promo-sub {
  font-size: 13px;
  color: var(--er-muted-text);
  line-height: 1.5;
}

/* YOUTUBE LIGHTBOX MODAL */
.er-video-modal {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.er-video-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.er-video-modal-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(36, 35, 31, 0.88);
  backdrop-filter: blur(4px);
}

.er-video-modal-container {
  position: relative;
  width: 100%;
  max-width: 860px;
  background-color: var(--er-white);
  border: 3px solid var(--er-espresso);
  box-shadow: 8px 8px 0px rgba(0,0,0,0.5);
  border-radius: var(--er-radius-sm);
  overflow: hidden;
  z-index: 2;
  transform: translateY(20px);
  transition: transform 0.25s ease;
}

.er-video-modal.is-open .er-video-modal-container {
  transform: translateY(0);
}

.er-video-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background-color: var(--er-paper);
  border-bottom: 2px solid var(--er-border-dark);
}

.er-video-modal-title {
  margin: 0;
  font-size: 16px;
  color: var(--er-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-right: 15px;
}

.er-video-modal-close {
  background: none;
  border: none;
  font-size: 20px;
  line-height: 1;
  color: var(--er-espresso);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 3px;
  transition: all 0.15s ease;
}

.er-video-modal-close:hover {
  background-color: #FF0000;
  color: #fff;
}

.er-video-player-frame {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  background-color: #000;
}

.er-video-player-frame iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}


/* ========================================================
   SECTION 14: MASTER RESPONSIVE SYSTEM ACROSS ALL BREAKPOINTS
   Ensures seamless presentation on:
   - 4K & Ultra-wide Desktops (1440px+)
   - Standard Laptops & Desktops (1024px - 1439px)
   - Tablet Landscape (992px - 1023px)
   - Tablet Portrait (768px - 991px)
   - Mobile Large / Phablets (481px - 767px)
   - Mobile Standard (361px - 480px)
   - Small Mobile / iPhone SE (320px - 360px)
   ======================================================== */

/* Global safety against unwanted horizontal scrolling */
html, body {
  overflow-x: hidden !important;
  max-width: 100vw !important;
  width: 100% !important;
  position: relative;
}

/* Global media scaling */
img, video, iframe, embed, object, svg {
  max-width: 100%;
}

/* Prevent text overflow on Bengali headings and titles */
h1, h2, h3, h4, h5, h6,
.er-hero-title,
.er-section-title,
.er-archive-title,
.er-card-title,
.er-notice-title,
.er-postcard-title,
.er-resource-hero-title,
.er-sidebar-title {
  overflow-wrap: break-word !important;
  word-wrap: break-word !important;
  hyphens: auto;
}

/* --------------------------------------------------------
   BREAKPOINT: Large Tablets & Laptops (max-width: 1024px)
   -------------------------------------------------------- */
@media (max-width: 1024px) {
  .er-container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .er-hero-grid {
    gap: 40px;
  }

  .er-footer-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 36px !important;
  }

  .er-resource-showcase-grid {
    grid-template-columns: 1fr !important;
    gap: 30px !important;
  }
}

/* --------------------------------------------------------
   BREAKPOINT: Tablet Landscape / Medium Screens (max-width: 991px)
   -------------------------------------------------------- */
@media (max-width: 991px) {
  .er-primary-nav {
    display: none !important;
  }

  .er-menu-toggle {
    display: flex !important;
  }

  .er-hero-grid {
    grid-template-columns: 1fr !important;
    gap: 40px !important;
  }

  .er-hero-section {
    padding: 44px 0 54px !important;
  }

  .er-intro-box {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .er-postcard {
    grid-template-columns: 1fr !important;
    gap: 30px !important;
    padding: 32px 24px !important;
  }

  .er-postcard-divider {
    display: none !important;
  }

  .er-about-page-layout {
    grid-template-columns: 1fr !important;
    gap: 36px !important;
  }

  .er-contact-page-layout {
    grid-template-columns: 1fr !important;
    gap: 36px !important;
  }

  .er-cards-grid--courses,
  .er-cards-grid--projects,
  .er-cards-grid--tutorials {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
  }
}

/* --------------------------------------------------------
   BREAKPOINT: Tablet Portrait (max-width: 768px)
   -------------------------------------------------------- */
@media (max-width: 768px) {
  /* Utility Bar */
  .er-utility-bar {
    font-size: 11.5px !important;
  }

  .er-utility-inner {
    padding-top: 5px !important;
    padding-bottom: 5px !important;
  }

  .er-utility-tag {
    display: none !important;
  }

  .er-utility-sep {
    display: none !important;
  }

  /* Header */
  .er-header-inner {
    height: 64px !important;
    gap: 12px !important;
  }

  .er-btn--header {
    display: none !important;
  }

  .custom-logo,
  .er-custom-logo-img {
    max-height: 40px !important;
  }

  .er-brand-title {
    font-size: 18px !important;
  }

  .er-brand-subtitle {
    font-size: 10px !important;
  }

  /* Hero Section */
  .er-hero-section {
    padding: 36px 0 46px !important;
  }

  .er-hero-title {
    font-size: clamp(26px, 6vw, 38px) !important;
    margin-bottom: 16px !important;
  }

  .er-hero-subtitle {
    font-size: 16px !important;
    margin-bottom: 24px !important;
  }

  .er-hero-stats {
    gap: 16px !important;
    flex-wrap: wrap !important;
  }

  .er-stat-number {
    font-size: 24px !important;
  }

  .er-analog-paper-card {
    box-shadow: 5px 5px 0 var(--er-espresso) !important;
    transform: rotate(0deg) !important;
  }

  .er-portrait-frame {
    min-height: 280px !important;
  }

  /* Section Headers */
  .er-section-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 12px !important;
  }

  .er-section-title {
    font-size: 28px !important;
  }

  /* Footer Banner */
  .er-footer-banner-inner {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 14px !important;
  }

  .er-footer-banner-title {
    font-size: 18px !important;
  }

  .er-footer-bottom-inner {
    flex-direction: column !important;
    text-align: center !important;
    gap: 12px !important;
  }

  .er-legal-links {
    flex-wrap: wrap !important;
    justify-content: center !important;
  }

  /* Video Lightbox Modal */
  .er-video-modal-container {
    width: calc(100% - 24px) !important;
    box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.5) !important;
  }
}

/* --------------------------------------------------------
   BREAKPOINT: Mobile Landscape / Large Phones (max-width: 640px)
   -------------------------------------------------------- */
@media (max-width: 640px) {
  /* Utility Bar */
  .er-utility-left {
    display: none !important;
  }

  .er-utility-inner {
    justify-content: center !important;
  }

  .er-utility-right {
    gap: 18px !important;
  }

  .er-account-link {
    display: none !important;
  }

  /* All Grid Cards collapsed to 1 column */
  .er-cards-grid--courses,
  .er-cards-grid--projects,
  .er-cards-grid--tutorials,
  .er-noticeboard-items {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }

  /* Noticeboard */
  .er-noticeboard-box {
    padding: 24px 16px !important;
  }

  .er-noticeboard-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
  }

  .er-noticeboard-title {
    font-size: 24px !important;
  }

  /* Filter bar */
  .er-filter-bar {
    padding: 16px !important;
  }

  .er-filter-type-tabs {
    overflow-x: auto !important;
    flex-wrap: nowrap !important;
    padding-bottom: 6px !important;
    -webkit-overflow-scrolling: touch !important;
  }

  .er-filter-tab {
    flex-shrink: 0 !important;
  }

  /* Footer */
  .er-footer-grid {
    grid-template-columns: 1fr !important;
    gap: 30px !important;
    padding-top: 40px !important;
    padding-bottom: 40px !important;
  }

  /* Timeline */
  .er-journey-card {
    padding: 24px 16px !important;
  }

  .er-journey-timeline::before {
    left: 16px !important;
  }

  .er-timeline-item {
    padding-left: 42px !important;
  }

  .er-timeline-badge {
    left: 5px !important;
    width: 24px !important;
    height: 24px !important;
  }
}

/* --------------------------------------------------------
   BREAKPOINT: Mobile Standard (max-width: 480px)
   -------------------------------------------------------- */
@media (max-width: 480px) {
  /* Container Padding */
  .er-container {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  /* Header adjustments */
  .er-header-inner {
    height: 58px !important;
  }

  .custom-logo,
  .er-custom-logo-img {
    max-height: 36px !important;
    max-width: 170px !important;
  }

  .er-brand-mark {
    width: 34px !important;
    height: 34px !important;
    font-size: 15px !important;
  }

  .er-brand-title {
    font-size: 16px !important;
  }

  .er-brand-subtitle {
    display: none !important;
  }

  .er-menu-toggle {
    width: 34px !important;
    height: 34px !important;
    padding: 7px !important;
  }

  .er-btn-icon {
    width: 34px !important;
    height: 34px !important;
  }

  /* Mobile Drawer full touch targets */
  .er-mobile-drawer-panel {
    width: 86vw !important;
    max-width: 320px !important;
  }

  .er-mobile-menu-list a {
    padding: 13px 18px !important;
    font-size: 16px !important;
  }

  /* Hero Section */
  .er-hero-section {
    padding: 28px 0 36px !important;
  }

  .er-eyebrow-wrap {
    margin-bottom: 14px !important;
    gap: 8px !important;
  }

  .er-eyebrow-text {
    font-size: 13px !important;
  }

  .er-hero-title {
    font-size: clamp(23px, 6.8vw, 30px) !important;
    line-height: 1.25 !important;
    margin-bottom: 14px !important;
  }

  .er-hero-subtitle {
    font-size: 15px !important;
    line-height: 1.6 !important;
    margin-bottom: 22px !important;
  }

  .er-hero-ctas {
    flex-direction: column !important;
    width: 100% !important;
    gap: 10px !important;
    margin-bottom: 28px !important;
  }

  .er-hero-ctas .er-btn {
    width: 100% !important;
    justify-content: center !important;
    padding: 12px 18px !important;
    font-size: 14.5px !important;
  }

  .er-hero-stats {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 12px !important;
    padding-top: 18px !important;
  }

  .er-stat-sep {
    display: none !important;
  }

  /* Hero Analog Card */
  .er-analog-paper-card {
    padding: 12px !important;
    box-shadow: 4px 4px 0 var(--er-espresso) !important;
    transform: none !important;
  }

  .er-portrait-frame {
    min-height: 230px !important;
  }

  .er-hero-stamp {
    right: 10px !important;
    top: -12px !important;
    transform: scale(0.85) rotate(-3deg) !important;
  }

  /* Noticeboard */
  .er-notice-item {
    flex-direction: column !important;
    padding: 14px 12px !important;
    gap: 12px !important;
  }

  .er-notice-thumb {
    width: 100% !important;
    height: 140px !important;
    max-width: 100% !important;
    margin: 0 0 4px 0 !important;
  }

  .er-notice-cta {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Course Card */
  .er-course-card {
    padding: 16px !important;
    box-shadow: 3px 3px 0 var(--er-espresso) !important;
  }

  .er-course-footer {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 12px !important;
  }

  .er-course-footer .er-btn {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Tutorials Card & Modal */
  .er-tutorial-card {
    box-shadow: 3px 3px 0 var(--er-espresso) !important;
  }

  .er-video-modal-container {
    width: calc(100% - 16px) !important;
    box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.5) !important;
  }

  .er-video-modal-header {
    padding: 10px 12px !important;
  }

  .er-video-modal-title {
    font-size: 14px !important;
  }

  .er-video-modal-close {
    min-width: 44px !important;
    min-height: 44px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  /* Newsletter Postcard */
  .er-section--postcard {
    padding: 44px 0 !important;
  }

  .er-postcard {
    padding: 22px 14px !important;
    box-shadow: 4px 4px 0 var(--er-espresso) !important;
    gap: 20px !important;
  }

  .er-postcard-stamp-box {
    justify-content: center !important;
    margin-bottom: 16px !important;
  }

  .er-postcard-title {
    font-size: 22px !important;
  }

  .er-input-with-btn {
    flex-direction: column !important;
    gap: 8px !important;
  }

  .er-input-with-btn .er-btn {
    width: 100% !important;
    justify-content: center !important;
    padding: 12px 16px !important;
  }

  /* About & Contact Highlights */
  .er-highlight-stat-box {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 12px !important;
    padding: 18px 14px !important;
  }

  .er-stat-big {
    font-size: 38px !important;
  }

  .er-contact-phone-display {
    font-size: 20px !important;
    flex-wrap: wrap !important;
  }
}

/* --------------------------------------------------------
   BREAKPOINT: Compact Small Phones / iPhone SE (max-width: 360px)
   -------------------------------------------------------- */
@media (max-width: 360px) {
  .er-container {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }

  .custom-logo,
  .er-custom-logo-img {
    max-height: 32px !important;
    max-width: 140px !important;
  }

  .er-brand-title {
    font-size: 15px !important;
  }

  .er-hero-title {
    font-size: 22px !important;
  }

  .er-btn {
    padding: 9px 14px !important;
    font-size: 13.5px !important;
  }

  .er-postcard-title {
    font-size: 20px !important;
  }

  .er-contact-phone-display {
    font-size: 18px !important;
  }

  .er-legal-links {
    flex-direction: column !important;
    gap: 4px !important;
  }

  .er-dot {
    display: none !important;
  }
}