/* ==========================================================================
   NahlMedia Edu - Main Stylesheet (Brand: Emerald Mint & Honey Gold)
   Designed by: Frontend UI/UX, LXD, and Backend Developer Team
   ========================================================================== */

/* --------------------------------------------------------------------------
   Google Fonts & Design Tokens
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&display=swap');

:root {
  /* Brand Palette - NahlMedia Edu (Emerald Mint & Honey Gold) */
  --bg-base: #aee1c4;
  --bg-gradient-top: #c2f0d6;
  --bg-gradient-bottom: #97d4b1;
  --bg-blob-emerald: rgba(167, 243, 208, 0.65);
  --bg-blob-honey: rgba(254, 243, 199, 0.55);

  --brand-primary: #059669;
  --brand-primary-dark: #064e3b;
  --brand-primary-light: #10b981;
  --brand-honey: #f59e0b;
  --brand-honey-hover: #d97706;
  --brand-honey-light: #fef08a;

  --text-main: #062b1b;
  --text-muted: #15573b;
  --text-sub: #1e6c4a;

  /* Card & Glassmorphism Tokens */
  --card-bg: rgba(255, 255, 255, 0.54);
  --card-bg-hover: rgba(255, 255, 255, 0.88);
  --card-border: rgba(255, 255, 255, 0.72);
  --card-border-hover: rgba(16, 185, 129, 0.5);
  --card-shadow: 0 12px 24px -6px rgba(6, 78, 59, 0.08), 0 4px 10px -2px rgba(6, 78, 59, 0.04);
  --card-shadow-hover: 0 20px 36px -8px rgba(6, 78, 59, 0.16), 0 0 22px rgba(245, 158, 11, 0.22);
  --card-radius: 24px;

  /* Action Buttons */
  --btn-outline-border: #064e3b;
  --btn-outline-text: #064e3b;
  --btn-white-bg: #ffffff;
  --btn-white-text: #065f46;
  --btn-white-shadow: 0 6px 16px rgba(6, 78, 59, 0.12);

  /* Layout */
  --container-max-w: 1220px;
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --transition-fast: 0.18s cubic-bezier(0.2, 0, 0, 1);
  --transition-smooth: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   Reset & Global Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-base);
  background-image: 
    radial-gradient(circle at 18% 20%, var(--bg-blob-emerald) 0%, transparent 45%),
    radial-gradient(circle at 82% 16%, var(--bg-blob-honey) 0%, transparent 42%),
    radial-gradient(circle at 50% 68%, rgba(209, 250, 229, 0.45) 0%, transparent 55%),
    linear-gradient(180deg, var(--bg-gradient-top) 0%, var(--bg-base) 45%, var(--bg-gradient-bottom) 100%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Honeycomb Geometric Background Layer (Khas NahlMedia) */
.honeycomb-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='97' viewBox='0 0 56 97'%3E%3Cpath fill='%23064e3b' d='M28 66L0 50L0 16L28 0L56 16L56 50L28 66ZM28 97L0 81L0 66L28 82L56 66L56 81L28 97Z'/%3E%3C/svg%3E");
  background-size: 56px 97px;
}

/* Floating Sparkle Particles */
.sparkle-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.sparkle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: #ffffff;
  border-radius: 50%;
  opacity: 0.85;
  filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.9));
  animation: floatSparkle 6s ease-in-out infinite alternate;
}

.sparkle.s1 { top: 12%; left: 41%; animation-delay: 0s; width: 3px; height: 3px; background: #fef08a; }
.sparkle.s2 { top: 14%; left: 95%; animation-delay: 1.2s; width: 4.5px; height: 4.5px; }
.sparkle.s3 { top: 67%; left: 42%; animation-delay: 2.5s; width: 3.5px; height: 3.5px; background: #fef08a; }
.sparkle.s4 { top: 92%; left: 52%; animation-delay: 0.8s; width: 4px; height: 4px; }
.sparkle.s5 { top: 91%; left: 62%; animation-delay: 3.1s; width: 3.5px; height: 3.5px; background: #fef08a; }
.sparkle.s6 { top: 38%; left: 8%; animation-delay: 1.8s; width: 3px; height: 3px; opacity: 0.6; }
.sparkle.s7 { top: 48%; left: 92%; animation-delay: 2.2s; width: 3.5px; height: 3.5px; opacity: 0.6; }

@keyframes floatSparkle {
  0% { transform: translateY(0px) scale(0.9); opacity: 0.5; }
  50% { transform: translateY(-7px) scale(1.2); opacity: 0.95; }
  100% { transform: translateY(4px) scale(0.85); opacity: 0.6; }
}

.container {
  width: 100%;
  max-width: var(--container-max-w);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.main-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 15px 0;
  background: rgba(174, 225, 196, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 16px rgba(6, 78, 59, 0.04);
  transition: all var(--transition-fast);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  transition: transform var(--transition-smooth);
}

.brand:hover {
  transform: scale(1.02);
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  box-shadow: 0 4px 12px rgba(6, 78, 59, 0.15);
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #043f2e 0%, #059669 45%, #b45309 82%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  display: inline-block;
  filter: drop-shadow(0 2px 6px rgba(6, 78, 59, 0.08));
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.brand:hover .brand-name {
  filter: drop-shadow(0 3px 10px rgba(245, 158, 11, 0.25));
}

.brand-gradient-text {
  background: linear-gradient(135deg, #043f2e 0%, #059669 45%, #b45309 82%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  display: inline-block;
  font-weight: 800;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: #033522;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2.5px;
  background: var(--brand-primary);
  border-radius: 4px;
  transition: width 0.25s ease, left 0.25s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  left: 0;
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border-radius: 9999px;
  transition: all var(--transition-fast);
  outline: none;
  user-select: none;
}

.btn-masuk {
  padding: 8px 26px;
  background: transparent;
  color: var(--btn-outline-text);
  border: 1.8px solid var(--btn-outline-border);
}

.btn-masuk:hover {
  background: rgba(6, 78, 59, 0.08);
  transform: translateY(-2px);
}

.btn-daftar {
  padding: 9px 24px;
  background: var(--btn-white-bg);
  color: var(--btn-white-text);
  border: 1.8px solid #ffffff;
  box-shadow: var(--btn-white-shadow);
}

.btn-daftar:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(6, 78, 59, 0.16);
}

.btn-donasi {
  padding: 9px 24px;
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #ffffff !important;
  border: 1.8px solid #f59e0b;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  border-radius: 9999px;
  transition: all var(--transition-fast);
}

.btn-donasi:hover {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(245, 158, 11, 0.45);
}

/* Universal Header Actions Row - Prevents stacking/overlapping */
.materi-header-actions,
.donasi-header-actions,
.pendukung-header-actions,
.nav-actions {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 10px !important;
  flex-shrink: 0 !important;
}

.btn-sound-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.65);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-sound-toggle:hover {
  background: rgba(255, 255, 255, 0.85);
  transform: scale(1.08);
}

/* Mobile Hamburger */
.btn-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.btn-hamburger span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--text-main);
  border-radius: 4px;
  transition: all 0.3s ease;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 42px 0 24px 0;
  text-align: center;
}

.category-badge-wrapper {
  margin-bottom: 14px;
}

.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  background: rgba(255, 255, 255, 0.45);
  border: 1.2px solid rgba(255, 255, 255, 0.65);
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: #064e3b;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 14px rgba(6, 78, 59, 0.06);
}

.category-badge::before {
  content: '🐝';
  font-size: 0.95rem;
}

.hero-headline-minimal {
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 700;
  color: #063d28;
  max-width: 760px;
  margin: 14px auto 30px auto;
  line-height: 1.55;
  letter-spacing: -0.3px;
}

.hero-title {
  font-size: clamp(2rem, 4.2vw, 2.9rem);
  font-weight: 900;
  color: #052417;
  letter-spacing: -0.8px;
  line-height: 1.2;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  font-weight: 500;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 28px auto;
  line-height: 1.55;
}

/* Filter & Search Bar */
.filter-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}

.filter-tab {
  padding: 8px 18px;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.32);
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
}

.filter-tab:hover {
  background: rgba(255, 255, 255, 0.7);
  transform: translateY(-1px);
}

.filter-tab.active {
  background: #ffffff;
  color: #065f46;
  border-color: #ffffff;
  box-shadow: 0 4px 14px rgba(6, 78, 59, 0.12), 0 0 10px rgba(245, 158, 11, 0.15);
}

.filter-tab.filter-tab-ready {
  background: linear-gradient(135deg, rgba(254, 243, 199, 0.95) 0%, rgba(253, 230, 138, 0.95) 100%);
  color: #92400e;
  border-color: #f59e0b;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.2);
}

.filter-tab.filter-tab-ready:hover {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.filter-tab.filter-tab-ready.active {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #ffffff;
  border-color: #d97706;
  box-shadow: 0 4px 14px rgba(217, 119, 6, 0.35);
}

.search-box-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-left: 6px;
}

.search-input {
  padding: 8px 16px 8px 36px;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.45);
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text-main);
  outline: none;
  width: 170px;
  transition: all var(--transition-fast);
}

.search-input:focus {
  width: 220px;
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Categories Grid (Distinct NahlMedia Edu Card Styling)
   -------------------------------------------------------------------------- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  margin-bottom: 56px;
}

.category-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 12px 20px 12px;
  min-height: 150px;
  background: var(--card-bg);
  border: 1.5px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  transition: transform var(--transition-smooth), 
              background var(--transition-fast), 
              box-shadow var(--transition-smooth), 
              border-color var(--transition-fast);
  text-decoration: none;
  color: inherit;
  user-select: none;
  overflow: hidden;
}

/* Subtle Top Glow & Honeycomb Accent */
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0) 100%);
  border-top-left-radius: var(--card-radius);
  border-top-right-radius: var(--card-radius);
  pointer-events: none;
}

.category-card:hover {
  transform: translateY(-8px) scale(1.02);
  background: var(--card-bg-hover);
  border-color: var(--card-border-hover);
  box-shadow: var(--card-shadow-hover);
}

.category-card:active {
  transform: translateY(-2px) scale(0.99);
}

.card-icon-wrapper {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  transition: transform var(--transition-smooth);
}

.category-card:hover .card-icon-wrapper {
  transform: scale(1.14) rotate(2deg);
}

.card-icon {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.08));
}

.card-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: #052417;
  text-align: center;
  letter-spacing: -0.2px;
  line-height: 1.25;
  transition: color var(--transition-fast);
}

.category-card:hover .card-title {
  color: #03180f;
}

.card-games-tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: #0d6342;
  margin-top: 5px;
  background: rgba(16, 185, 129, 0.12);
  padding: 2px 8px;
  border-radius: 9999px;
  transition: all var(--transition-fast);
}

.category-card:hover .card-games-tag {
  background: rgba(245, 158, 11, 0.2);
  color: #b45309;
}

.card-status-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2.5px 8px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  z-index: 2;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  letter-spacing: 0.02em;
}

.card-status-badge.ready {
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #10b981;
}

.card-status-badge.syllabus {
  background: rgba(248, 250, 252, 0.88);
  color: #64748b;
  border: 1px solid #cbd5e1;
}

.category-card:hover .card-status-badge.ready {
  background: #059669;
  color: #ffffff;
  border-color: #059669;
  box-shadow: 0 4px 10px rgba(5, 150, 105, 0.25);
}

.card-quick-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: #f59e0b;
  opacity: 0;
  transform: scale(0.6);
  transition: all var(--transition-fast);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.category-card:hover .card-quick-badge {
  opacity: 1;
  transform: scale(1);
}

.no-results-msg {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 20px;
  background: rgba(255, 255, 255, 0.45);
  border-radius: var(--card-radius);
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   LXD Learning Feature Highlights
   -------------------------------------------------------------------------- */
.features-banner {
  background: rgba(255, 255, 255, 0.45);
  border: 1.5px solid rgba(255, 255, 255, 0.65);
  border-radius: 26px;
  padding: 32px 36px;
  backdrop-filter: blur(14px);
  margin-bottom: 50px;
  box-shadow: 0 12px 28px rgba(6, 78, 59, 0.06);
}

.banner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.banner-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.banner-icon {
  width: 50px;
  height: 50px;
  border-radius: 15px;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 6px 14px rgba(6, 78, 59, 0.08);
  flex-shrink: 0;
}

.banner-info h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: #062b1b;
  margin-bottom: 4px;
}

.banner-info p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.main-footer {
  padding: 28px 0 36px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.35);
  text-align: center;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.15rem;
}

.footer-logo span {
  background: linear-gradient(135deg, #043f2e 0%, #059669 45%, #b45309 82%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.footer-copy {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-link {
  font-size: 0.88rem;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
}

.footer-link:hover {
  color: var(--text-main);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Modals (Level & Grade Selector Gateway)
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 38, 25, 0.58);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  width: 100%;
  max-width: 660px;
  background: #ffffff;
  border-radius: 28px;
  box-shadow: 0 25px 50px -12px rgba(4, 38, 25, 0.3);
  overflow: hidden;
  position: relative;
  transform: scale(0.92) translateY(15px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-overlay.active .modal-card {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: #f1f5f9;
  color: #475569;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close-btn:hover {
  background: #e2e8f0;
  color: #0f172a;
  transform: rotate(90deg);
}

.modal-header-hero {
  background: linear-gradient(135deg, #ecfdf5 0%, #fef3c7 100%);
  padding: 24px 28px 18px 28px;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 18px;
}

.modal-subject-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}

.modal-subject-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.modal-subject-meta {
  flex-grow: 1;
}

.modal-meta-pills {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.meta-pill {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 9999px;
  text-transform: uppercase;
}

.pill-group {
  background: #059669;
  color: #ffffff;
}

.pill-km {
  background: #fef08a;
  color: #854d0e;
}

.modal-subject-title {
  font-size: 1.45rem;
  font-weight: 900;
  color: #062b1b;
  line-height: 1.2;
}

.modal-subject-tagline {
  font-size: 0.88rem;
  color: #475569;
  margin-top: 2px;
}

.modal-body {
  padding: 22px 28px;
  overflow-y: auto;
}

/* Level Selection */
.level-step-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.level-step-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 800;
  color: #0f172a;
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #059669;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
}

.level-tabs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.level-tab-card {
  padding: 12px 14px;
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  border-radius: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.level-tab-card:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

.level-tab-card.active {
  background: #ecfdf5;
  border-color: #10b981;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.18);
}

.level-tab-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.level-tab-text strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 800;
  color: #0f172a;
}

.level-tab-text small {
  display: block;
  font-size: 0.75rem;
  color: #64748b;
  font-weight: 600;
}

.level-tab-card.active .level-tab-text strong {
  color: #065f46;
}

/* Grades Pills */
.grades-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.grade-pill-btn {
  padding: 8px 18px;
  border-radius: 9999px;
  border: 1.5px solid #cbd5e1;
  background: #f8fafc;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: #334155;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.grade-pill-btn:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
  transform: translateY(-1px);
}

.grade-pill-btn.active {
  background: #059669;
  color: #ffffff;
  border-color: #059669;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.28);
}

.grade-pill-btn.has-interactive {
  border-color: #34d399;
  background: #f0fdf4;
  color: #065f46;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.grade-pill-btn.has-interactive:hover {
  background: #dcfce7;
  border-color: #059669;
}

.grade-pill-btn.has-interactive.active {
  background: #059669;
  color: #ffffff;
  border-color: #059669;
}

.pill-badge-rocket {
  font-size: 0.85rem;
  line-height: 1;
}

.preview-status-pill {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 9999px;
  margin-left: 8px;
  vertical-align: middle;
}

.preview-status-pill.ready {
  background: #dcfce7;
  color: #15803d;
  border: 1px solid #86efac;
}

.preview-status-pill.syllabus {
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #cbd5e1;
}

.btn-launch-grade.btn-interactive-ready {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%) !important;
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.35) !important;
}

.btn-launch-grade.btn-interactive-ready:hover {
  background: linear-gradient(135deg, #047857 0%, #059669 100%) !important;
  transform: translateY(-2px);
}

/* Curriculum Preview Box */
.curriculum-preview-box {
  margin-top: 20px;
  background: #f8fafc;
  border: 1.5px solid #e2e8f0;
  border-radius: 18px;
  padding: 18px 20px;
  transition: all var(--transition-fast);
}

.preview-phase-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.phase-tag {
  font-size: 0.82rem;
  font-weight: 800;
  color: #065f46;
  background: #d1fae5;
  padding: 4px 12px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.preview-games-count {
  font-size: 0.8rem;
  font-weight: 700;
  color: #64748b;
}

.preview-topics-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: #1e293b;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.preview-topics-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.preview-topics-list li {
  font-size: 0.9rem;
  color: #334155;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.4;
}

.preview-topics-list li::before {
  content: '✓';
  color: #10b981;
  font-weight: 800;
}

.preview-games-featured {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 10px;
  border-top: 1px dashed #cbd5e1;
}

.preview-games-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: #64748b;
}

.preview-games-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.game-chip {
  font-size: 0.75rem;
  font-weight: 700;
  background: #ffffff;
  color: #1e293b;
  border: 1px solid #e2e8f0;
  padding: 3px 10px;
  border-radius: 8px;
}

/* Modal Footer & Launch Button */
.modal-footer {
  padding: 16px 28px 22px 28px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  border-top: 1px solid #f1f5f9;
}

.btn-secondary {
  padding: 10px 20px;
  border-radius: 9999px;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  color: #334155;
  font-weight: 700;
  cursor: pointer;
}

.btn-secondary:hover {
  background: #f8fafc;
}

.btn-primary {
  padding: 10px 24px;
  border-radius: 9999px;
  border: none;
  background: #059669;
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.25);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: #047857;
  transform: translateY(-1px);
}

.btn-launch-grade {
  padding: 12px 28px;
  font-size: 1rem;
  background: linear-gradient(135deg, #059669 0%, #10b981 50%, #f59e0b 100%);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-launch-grade:hover {
  box-shadow: 0 6px 22px rgba(5, 150, 105, 0.38);
  transform: translateY(-2px);
}

/* Auth Modal */
.auth-tabs {
  display: flex;
  border-bottom: 1px solid #e2e8f0;
}

.auth-tab-btn {
  flex: 1;
  padding: 14px;
  border: none;
  background: #f8fafc;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  color: #64748b;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.auth-tab-btn.active {
  background: #ffffff;
  color: #059669;
  border-bottom: 2.5px solid #059669;
}

.auth-form {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: #1e293b;
}

.form-input {
  padding: 11px 16px;
  border-radius: 12px;
  border: 1.5px solid #cbd5e1;
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  border-color: #059669;
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
}

.form-role-select {
  display: flex;
  gap: 10px;
}

.role-pill-btn {
  flex: 1;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1.5px solid #cbd5e1;
  background: #f8fafc;
  font-size: 0.85rem;
  font-weight: 700;
  color: #334155;
  cursor: pointer;
  text-align: center;
}

.role-pill-btn.active {
  border-color: #059669;
  background: #d1fae5;
  color: #065f46;
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 28px;
  right: 28px;
  padding: 12px 22px;
  background: #064e3b;
  color: #ffffff;
  border-radius: 9999px;
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  z-index: 2000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* Responsive */
@media (max-width: 1180px) {
  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 860px) {
  .nav-menu {
    display: none;
  }

  .btn-hamburger {
    display: flex;
  }

  .nav-menu.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(174, 225, 196, 0.98);
    backdrop-filter: blur(16px);
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.1);
  }

  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .banner-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 620px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .category-card {
    min-height: 132px;
    padding: 16px 8px;
    border-radius: 18px;
  }

  .card-icon-wrapper {
    width: 44px;
    height: 44px;
    margin-bottom: 8px;
  }

  .card-title {
    font-size: 0.88rem;
  }

  .level-tabs-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .modal-header-hero {
    padding: 18px 20px;
  }

  .modal-body {
    padding: 16px 20px;
  }

  .btn-launch-grade {
    width: 100%;
    justify-content: center;
  }

  .modal-footer {
    flex-direction: column-reverse;
  }

  .btn-secondary {
    width: 100%;
  }

  .hero-section {
    padding: 24px 0 16px 0;
  }

  .filter-container {
    gap: 6px;
  }

  .filter-tab {
    padding: 6px 12px;
    font-size: 0.78rem;
  }

  .search-box-wrapper {
    width: 100%;
    margin-top: 6px;
  }

  .search-input {
    width: 100%;
  }

  .search-input:focus {
    width: 100%;
  }

  .btn-masuk {
    padding: 7px 16px;
    font-size: 0.88rem;
  }

  .btn-daftar {
    padding: 7px 16px;
    font-size: 0.88rem;
  }

  .brand-name {
    font-size: 1.2rem;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 14px;
  }
}

/* ==========================================================================
   Mobile-First App Bottom Dock (Unified App Experience on Smartphones)
   ========================================================================== */
.mobile-bottom-dock {
  display: none;
}

@media (max-width: 640px) {
  html, body {
    overflow-x: hidden;
  }

  body {
    padding-bottom: 84px !important;
  }

  /* Fixed 56px Sleek Top App Bar */
  .main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 56px !important;
    max-height: 56px !important;
    padding: 0 !important;
    background: rgba(174, 225, 196, 0.96) !important;
    backdrop-filter: blur(14px);
    border-bottom: 1.5px solid rgba(255, 255, 255, 0.6) !important;
    box-shadow: 0 2px 8px rgba(6, 78, 59, 0.06) !important;
  }

  /* Hide bulky Donasi button in mobile header (available in bottom dock) */
  .nav-actions #btnDonasi {
    display: none !important;
  }

  .nav-wrapper {
    height: 100% !important;
    padding: 0 16px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
  }

  .nav-wrapper .brand-name {
    font-size: 1.05rem;
    font-weight: 800;
  }

  .btn-sound-toggle {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
  }

  .mobile-bottom-dock {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 66px !important;
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(16px) !important;
    border-top: 1.5px solid #eef2f6 !important;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-around !important;
    padding: 4px 6px calc(4px + env(safe-area-inset-bottom, 0px)) 6px !important;
    z-index: 9999 !important;
  }

  .dock-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #64748b;
    font-size: 0.68rem;
    font-weight: 700;
    flex: 1;
    height: 100%;
    transition: all 0.2s ease;
    gap: 1px;
  }

  .dock-icon {
    font-size: 1.15rem;
    line-height: 1;
  }

  .dock-label {
    font-size: 0.68rem;
    font-weight: 700;
    line-height: 1.1;
    white-space: nowrap;
  }

  .dock-item.active {
    color: #059669;
  }

  .dock-pill {
    background: #d1fae5;
    padding: 2px 14px;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1px;
  }

  .dock-item:active {
    transform: scale(0.95);
  }
}