/* ==========================================================================
   Student Hub — VisionOS Liquid Glass Design System
   theme.css
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Surface & Base */
  --bg: #070b16;
  --blob-blue: #3b82f6;
  --blob-teal: #14b8a6;
  --blob-violet: #8b5cf6;

  /* Glass Tokens */
  --glass-fill: rgba(255, 255, 255, 0.05);
  --glass-fill-hover: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-subtle: rgba(255, 255, 255, 0.08);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.25);
  --blur: blur(24px) saturate(160%);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.25);

  /* Radius */
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;

  /* Typography Colors */
  --text: #f1f5f9;
  --text-body: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Brand Accents */
  --accent: #5eead4;
  --primary-gradient: linear-gradient(135deg, #3b82f6, #14b8a6);

  /* Functional Status */
  --danger: #f87171;
  --warning: #fbbf24;
  --success: #34d399;
  --whatsapp: #25D366;
  --whatsapp-hover: #22bf5b;

  /* Spacing Scale */
  --sp-4: 4px;
  --sp-8: 8px;
  --sp-12: 12px;
  --sp-16: 16px;
  --sp-24: 24px;
  --sp-32: 32px;
  --sp-48: 48px;
  --sp-64: 64px;
  --sp-96: 96px;

  /* Layout */
  --max-width: 1200px;
}

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

html {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text-body);
  background-color: var(--bg);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background-color: var(--bg);
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
  font-size: 16px;
}

/* Subtle Fixed Noise Overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.03;
  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");
}

/* Ambient Drifting Blurred Blobs (Background Only, 40–60s loops) */
.blob-container {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.28;
  will-change: transform;
}

.blob-1 {
  width: 600px;
  height: 600px;
  background: var(--blob-blue);
  top: -100px;
  left: 10%;
  animation: driftOne 48s infinite alternate ease-in-out;
}

.blob-2 {
  width: 550px;
  height: 550px;
  background: var(--blob-teal);
  top: 40%;
  right: -50px;
  animation: driftTwo 56s infinite alternate ease-in-out;
}

.blob-3 {
  width: 650px;
  height: 650px;
  background: var(--blob-violet);
  bottom: -150px;
  left: 20%;
  animation: driftThree 60s infinite alternate ease-in-out;
}

@keyframes driftOne {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(120px, 140px) scale(1.12); }
  100% { transform: translate(-80px, 200px) scale(0.95); }
}

@keyframes driftTwo {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-140px, -120px) scale(1.08); }
  100% { transform: translate(-60px, 160px) scale(0.92); }
}

@keyframes driftThree {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-100px, -150px) scale(1.15); }
  100% { transform: translate(140px, -80px) scale(0.9); }
}

/* Container & Sections */
.site-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-32);
}

@media (max-width: 1024px) {
  .site-container {
    padding: 0 var(--sp-24);
  }
}

@media (max-width: 640px) {
  .site-container {
    padding: 0 var(--sp-16);
  }
}

.section-spacing {
  padding-top: var(--sp-96);
  padding-bottom: var(--sp-96);
}

@media (max-width: 768px) {
  .section-spacing {
    padding-top: var(--sp-64);
    padding-bottom: var(--sp-64);
  }
}

/* Typography Scale */
h1, .h1 {
  font-size: 56px;
  line-height: 1.15;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.025em;
}

h2, .h2 {
  font-size: 40px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

h3, .h3 {
  font-size: 24px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.015em;
}

@media (max-width: 768px) {
  h1, .h1 {
    font-size: 36px;
    line-height: 1.2;
  }
  h2, .h2 {
    font-size: 28px;
    line-height: 1.25;
  }
  h3, .h3 {
    font-size: 20px;
  }
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: var(--sp-12);
}

.body-lead {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-body);
  max-width: 60ch;
}

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

.text-dim {
  color: var(--text-dim);
}

/* Glass Surfaces */
.glass-panel {
  background: var(--glass-fill);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.glass-card {
  background: var(--glass-fill);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease-out, background 0.25s ease-out, border-color 0.25s ease-out, box-shadow 0.25s ease-out;
}

.glass-card:hover {
  background: var(--glass-fill-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

/* Specular Highlight tracking for pointer devices */
@media (hover: hover) and (pointer: fine) {
  .specular-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle 240px at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.12), transparent 80%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 1;
  }
  .specular-card:hover::before {
    opacity: 1;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  height: 48px;
  min-height: 48px;
  padding: 0 var(--sp-24);
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, background 0.2s ease-out, border-color 0.2s ease-out;
  user-select: none;
  outline: none;
}

@media (max-width: 640px) {
  .btn {
    height: 44px;
    min-height: 44px;
    padding: 0 var(--sp-16);
    font-size: 14px;
  }
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn:active {
  transform: scale(0.97);
}

/* Primary Button (Gradient + Soft Glow) */
.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(20, 184, 166, 0.45);
}

/* Secondary Button (Clear Glass) */
.btn-secondary {
  background: var(--glass-fill);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-color: var(--glass-border);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--glass-fill-hover);
  border-color: rgba(255, 255, 255, 0.24);
  transform: translateY(-1px);
}

/* Floating WhatsApp Button */
.floating-whatsapp {
  position: fixed;
  bottom: var(--sp-24);
  right: var(--sp-24);
  width: 54px;
  height: 54px;
  border-radius: var(--radius-pill);
  background: var(--whatsapp);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 28px rgba(37, 211, 102, 0.45);
  z-index: 99;
  text-decoration: none;
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
}

.floating-whatsapp:hover {
  background: var(--whatsapp-hover);
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.6);
}

.floating-whatsapp:active {
  transform: scale(0.96);
}

/* Form Inputs */
.input-glass {
  width: 100%;
  height: 48px;
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 0 var(--sp-16);
  font-size: 15px;
  color: var(--text);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.input-glass:focus {
  background: var(--glass-fill-hover);
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.input-glass::placeholder {
  color: var(--text-dim);
}

/* Floating Sticky Navbar */
.navbar-wrap {
  position: sticky;
  top: 16px;
  z-index: 100;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-32);
}

@media (max-width: 1024px) {
  .navbar-wrap {
    padding: 0 var(--sp-24);
  }
}

@media (max-width: 640px) {
  .navbar-wrap {
    padding: 0 var(--sp-16);
    top: 12px;
  }
}

.navbar {
  height: 64px;
  background: rgba(7, 11, 22, 0.75);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-24);
  position: relative;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.nav-logo-box {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-32);
  list-style: none;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--text);
}

.nav-link.active {
  color: var(--text);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
}

/* User Avatar Pill & Dropdown */
.user-menu-wrap {
  position: relative;
}

.user-pill-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  height: 40px;
  padding: 0 var(--sp-16);
  border-radius: var(--radius-pill);
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.user-pill-btn:hover {
  background: var(--glass-fill-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: rgba(11, 16, 32, 0.95);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-md);
  padding: var(--sp-8);
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 105;
}

.user-dropdown.show {
  display: flex;
}

.user-dropdown a, .user-dropdown button {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  padding: var(--sp-8) var(--sp-12);
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 8px;
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}

.user-dropdown a:hover, .user-dropdown button:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

/* Mobile Nav Drawer */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 6px;
}

.mobile-sheet {
  position: fixed;
  inset: 0;
  background: rgba(7, 11, 22, 0.88);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  z-index: 999;
  display: none;
  flex-direction: column;
  padding: var(--sp-24);
}

.mobile-sheet.open {
  display: flex;
}

.mobile-sheet-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--sp-32);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-24);
}

.mobile-nav-links a {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-body);
  text-decoration: none;
}

.mobile-nav-links a:hover, .mobile-nav-links a.active {
  color: var(--text);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-nav-toggle {
    display: flex;
  }
}

/* Products Grid System */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-24);
  align-items: stretch;
}

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* Individual Product Card */
.product-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  height: 100%;
}

.product-card-img-wrap {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: rgba(0, 0, 0, 0.4);
  overflow: hidden;
  border-bottom: 1px solid var(--glass-border-subtle);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

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

.product-letter-placeholder {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}

.product-card-body {
  padding: var(--sp-20, 20px);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--sp-8);
}

.product-card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--sp-16);
}

.product-card-footer {
  margin-top: auto;
  padding-top: var(--sp-16);
  border-top: 1px solid var(--glass-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-price {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
}

/* Accordion (FAQ) */
.faq-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.faq-item.active {
  background: var(--glass-fill-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-trigger {
  width: 100%;
  padding: var(--sp-20, 20px) var(--sp-24);
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  gap: var(--sp-16);
}

.faq-chevron {
  transition: transform 0.25s ease;
  color: var(--text-muted);
  flex-shrink: 0;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 var(--sp-24);
}

.faq-content-inner {
  padding-bottom: var(--sp-20, 20px);
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}

/* Step Cards */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-24);
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }
}

.step-card {
  padding: var(--sp-32);
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
}

.step-badge-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
}

.step-icon {
  color: var(--accent);
}

/* Alert Boxes */
.alert-glass {
  background: var(--glass-fill);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--sp-12) var(--sp-16);
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  gap: var(--sp-12);
  margin-bottom: var(--sp-16);
}

.alert-danger {
  border-color: rgba(248, 113, 113, 0.4);
  background: rgba(248, 113, 113, 0.08);
  color: #fca5a5;
}

.alert-warning {
  border-color: rgba(251, 191, 36, 0.4);
  background: rgba(251, 191, 36, 0.08);
  color: #fde047;
}

.alert-success {
  border-color: rgba(52, 211, 153, 0.4);
  background: rgba(52, 211, 153, 0.08);
  color: #6ee7b7;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  pointer-events: none;
}

@media (min-width: 769px) {
  .toast-container {
    top: var(--sp-24);
    right: var(--sp-24);
  }
}

@media (max-width: 768px) {
  .toast-container {
    bottom: var(--sp-24);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 400px;
  }
}

.toast {
  pointer-events: auto;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--sp-12) var(--sp-16);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  animation: toastIn 0.25s ease-out;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.04) 75%);
  background-size: 200% 100%;
  animation: skeletonPulse 1.5s infinite;
  border-radius: 8px;
}

@keyframes skeletonPulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--glass-border);
  padding: var(--sp-64) 0 var(--sp-32);
  background: rgba(5, 8, 18, 0.6);
  position: relative;
  z-index: 2;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-48);
  margin-bottom: var(--sp-48);
}

@media (max-width: 768px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--sp-32);
  }
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-bottom {
  padding-top: var(--sp-24);
  border-top: 1px solid var(--glass-border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: var(--sp-12);
}

/* Fade-up animations */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Lucide Icons Standard Sizing (20px, 1.75 stroke) */
[data-lucide], svg.lucide {
  width: 20px;
  height: 20px;
  stroke-width: 1.75;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

/* Liquid Glass SVG Refraction Filter with Blur Fallback */
.liquid-refract {
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}
@supports (backdrop-filter: url(#liquid-refract)) or (-webkit-backdrop-filter: url(#liquid-refract)) {
  .liquid-refract {
    backdrop-filter: url(#liquid-refract) var(--blur);
    -webkit-backdrop-filter: url(#liquid-refract) var(--blur);
  }
}

/* Filter Chips */
.filter-chip {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  transition: all 0.2s ease;
  user-select: none;
  white-space: nowrap;
}
.filter-chip:hover {
  background: var(--glass-fill-hover);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
}
.filter-chip.active {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.6);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(59, 130, 246, 0.3);
}

/* Glass Search Bar with Icon and Clear Button */
.search-wrapper {
  position: relative;
  width: 100%;
  max-width: 480px;
}
.search-input-glass {
  width: 100%;
  height: 48px;
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  padding: 0 44px 0 44px;
  color: var(--text);
  font-size: 14px;
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-input-glass:focus {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}
.search-input-glass::placeholder {
  color: var(--text-dim);
}
.search-icon-left {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
  display: flex;
  align-items: center;
}
.search-clear-btn {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color 0.15s;
}
.search-clear-btn:hover {
  color: var(--text);
}

/* Plan Badges & Expiry Status */
.badge-plan {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  border: 1px solid transparent;
}
.badge-plan-normal {
  background: rgba(94, 234, 212, 0.12);
  border-color: rgba(94, 234, 212, 0.3);
  color: var(--accent);
}
.badge-plan-warning {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.3);
  color: var(--warning);
}
.badge-plan-expired {
  background: rgba(248, 113, 113, 0.12);
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--danger);
}

/* Progress Ring */
.progress-ring {
  transform: rotate(-90deg);
}
.progress-ring-circle-bg {
  stroke: rgba(255, 255, 255, 0.08);
}
.progress-ring-circle {
  stroke: var(--accent);
  transition: stroke-dashoffset 0.6s ease;
}

/* Breadcrumb & Plan Cards */
.breadcrumb-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: var(--sp-24);
}
.breadcrumb-bar a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb-bar a:hover {
  color: var(--text);
}
.plan-card {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
}
.plan-card:hover {
  background: var(--glass-fill-hover);
  border-color: rgba(255, 255, 255, 0.2);
}
.plan-card.selected {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.25);
}

/* Reduced Motion Compliance */
@media (prefers-reduced-motion: reduce) {
  .blob {
    animation: none !important;
  }
  .fade-up {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}