/* ============================================
   Student Medical Insights — Main Stylesheet
   Enhanced with Frontend Design Plugin aesthetics
   ============================================ */

/* ---------- Font Imports ---------- */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;0,9..144,800;0,9..144,900;1,9..144,400;1,9..144,600&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors — electric teal + vivid indigo + hot coral */
  --color-primary: #0891b2;
  --color-primary-light: #06b6d4;
  --color-primary-dark: #0e7490;
  --color-secondary: #6366f1;
  --color-secondary-light: #818cf8;
  --color-accent: #f43f5e;
  --color-accent-light: #fb7185;
  --color-accent-warm: #f97316;
  --color-accent-coral: #ff6b6b;

  --color-bg: #fafbff;
  --color-bg-alt: #eef5ff;
  --color-bg-card: #ffffff;
  --color-bg-footer: #0f0a2a;
  --color-surface: #f0f4ff;
  --color-surface-hover: #e4ebff;
  --color-border: #d4daf0;

  --color-text: #1a1a2e;
  --color-text-secondary: #4a4a6a;
  --color-text-muted: #8888a8;
  --color-text-inverse: #f0f0ff;
  --color-heading: #0d0d2b;

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* Typography — distinctive editorial pairing */
  --font-heading: 'Fraunces', 'Georgia', serif;
  --font-body: 'Outfit', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --fs-xs: 0.875rem;
  --fs-sm: 1rem;
  --fs-base: 1.125rem;
  --fs-md: 1.25rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.625rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.5rem;
  --fs-4xl: 3.5rem;
  --fs-5xl: 4.5rem;
  --fs-display: 6.75rem;

  --lh-tight: 1.15;
  --lh-normal: 1.6;
  --lh-relaxed: 1.8;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1240px;
  --max-reading: 720px;
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Shadows — layered for depth */
  --shadow-sm: 0 1px 3px rgba(15, 15, 50, 0.06);
  --shadow-md: 0 4px 12px -2px rgba(15, 15, 50, 0.08), 0 2px 4px -2px rgba(15, 15, 50, 0.04);
  --shadow-lg: 0 12px 28px -6px rgba(15, 15, 50, 0.1), 0 4px 8px -4px rgba(15, 15, 50, 0.06);
  --shadow-xl: 0 24px 48px -12px rgba(15, 15, 50, 0.14), 0 8px 16px -8px rgba(15, 15, 50, 0.06);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
  --shadow-card-hover: 0 20px 40px -12px rgba(8, 145, 178, 0.2), 0 8px 16px -8px rgba(99, 102, 241, 0.08);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Navigation */
  --nav-height: 76px;
}

/* ---------- Keyframe Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.2); }
  50% { box-shadow: 0 0 30px 10px rgba(99, 102, 241, 0.08); }
}

@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-1%, -1%); }
  20% { transform: translate(1%, 0%); }
  30% { transform: translate(0%, 1%); }
  40% { transform: translate(-1%, 1%); }
  50% { transform: translate(1%, -1%); }
  60% { transform: translate(-1%, 0%); }
  70% { transform: translate(1%, 1%); }
  80% { transform: translate(0%, -1%); }
  90% { transform: translate(-1%, 1%); }
}

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

/* ---------- Dark Mode ---------- */
[data-theme="dark"] {
  --color-bg: #0a0a1f;
  --color-bg-alt: #12122e;
  --color-bg-card: #16163a;
  --color-bg-footer: #06061a;
  --color-surface: #1a1a40;
  --color-surface-hover: #242450;
  --color-border: #2a2a55;

  --color-text: #d4d4f0;
  --color-text-secondary: #9898c0;
  --color-text-muted: #6868a0;
  --color-text-inverse: #0a0a1f;
  --color-heading: #ededff;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 28px -6px rgba(0, 0, 0, 0.6), 0 4px 8px -4px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 24px 48px -12px rgba(0, 0, 0, 0.6), 0 8px 16px -8px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(6, 182, 212, 0.15);
  --shadow-card-hover: 0 20px 40px -12px rgba(99, 102, 241, 0.2), 0 8px 16px -8px rgba(0, 0, 0, 0.4);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-text-size-adjust: 100%;
}

/* Subtle grain texture overlay on body */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-weight: 400;
  letter-spacing: -0.01em;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: var(--lh-tight);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variation-settings: 'opsz' 72;
}

h1 { font-size: var(--fs-4xl); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: var(--fs-3xl); font-weight: 700; }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); font-weight: 600; }
h5 { font-size: var(--fs-lg); font-weight: 600; }

main {
  flex: 1;
}

/* ---------- Utility Classes ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.reading-width {
  max-width: var(--max-reading);
  margin: 0 auto;
}

.section {
  padding: var(--space-4xl) 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: var(--fs-md);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--lh-relaxed);
}

/* Decorative accent line under section headers */
.section-header h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  border-radius: 2px;
  margin: var(--space-md) auto 0;
}

.label {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  position: relative;
  padding-left: 1.2em;
}

.label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0.6em;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  border-radius: 1px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.8rem 1.85rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.01em;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  transition: width 0.5s ease, height 0.5s ease;
  transform: translate(-50%, -50%);
}

.btn:active::after {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  box-shadow: 0 2px 12px rgba(8, 145, 178, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary-light) 100%);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.25);
}

.btn-white {
  background-color: #fff;
  color: var(--color-primary-dark);
}

.btn-white:hover {
  background-color: #f0fdfa;
  color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--fs-xs);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: var(--fs-base);
}

/* ---------- Navigation ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  border-bottom: 1px solid rgba(209, 224, 221, 0.5);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  background-color: rgba(250, 252, 252, 0.85);
  transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

[data-theme="dark"] .navbar {
  background-color: rgba(10, 22, 40, 0.85);
  border-bottom-color: rgba(36, 51, 80, 0.5);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand,
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--color-heading);
  text-decoration: none;
  letter-spacing: -0.025em;
  font-variation-settings: 'opsz' 72;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-brand span,
.nav-brand:not(:has(span)),
.nav-logo .logo-text {
  background: linear-gradient(135deg, var(--color-heading) 60%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all var(--transition-base);
}

.nav-brand:hover span,
.nav-brand:hover:not(:has(span)),
.nav-logo:hover .logo-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-brand svg,
.nav-logo svg {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  transition: transform var(--transition-spring);
  filter: drop-shadow(0 2px 6px rgba(99, 102, 241, 0.25));
}

.nav-brand:hover svg,
.nav-logo:hover svg {
  transform: rotate(-8deg) scale(1.1);
  filter: drop-shadow(0 4px 10px rgba(99, 102, 241, 0.35));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  right: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  border-radius: 1px;
  transition: left var(--transition-base), right var(--transition-base);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  left: 0;
  right: 0;
}

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

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-surface);
  color: var(--color-primary);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: currentColor;
  position: relative;
  transition: background-color var(--transition-fast);
}

.mobile-toggle span::before,
.mobile-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--transition-base);
}

.mobile-toggle span::before { top: -6px; }
.mobile-toggle span::after { top: 6px; }

.mobile-toggle.active span {
  background-color: transparent;
}

.mobile-toggle.active span::before {
  transform: rotate(45deg) translate(4px, 4px);
}

.mobile-toggle.active span::after {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ---------- Mobile Navigation ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg);
  z-index: 999;
  padding: var(--space-xl);
  overflow-y: auto;
}

.mobile-nav.active {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav a {
  display: block;
  padding: var(--space-md) 0;
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

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

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  padding: var(--space-5xl) 0 var(--space-4xl);
  background:
    radial-gradient(ellipse 80% 60% at 10% 90%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 70% 70% at 85% 15%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(244, 63, 94, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 40% 30% at 70% 80%, rgba(249, 115, 22, 0.06) 0%, transparent 50%),
    var(--color-bg);
  overflow: hidden;
}

[data-theme="dark"] .hero {
  background:
    radial-gradient(ellipse 80% 60% at 10% 90%, rgba(6, 182, 212, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse 70% 70% at 85% 15%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(244, 63, 94, 0.08) 0%, transparent 50%),
    var(--color-bg);
}

/* Decorative grid dots pattern */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(circle, var(--color-primary) 0.5px, transparent 0.5px);
  background-size: 32px 32px;
  opacity: 0.04;
  z-index: 0;
}

/* Hero two-column grid */
.hero > .container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
  animation: fadeInUp 0.8s ease-out both;
}

/* Hero image */
.hero-image {
  position: relative;
  z-index: 2;
  animation: slideInRight 0.9s ease-out 0.2s both;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow:
    0 25px 50px -12px rgba(99, 102, 241, 0.2),
    0 12px 24px -8px rgba(8, 145, 178, 0.15);
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
  display: block;
  transition: transform 6s cubic-bezier(0.25, 0, 0.15, 1);
}

.hero-image-wrapper:hover img {
  transform: scale(1.05);
}

/* Decorative gradient accent behind image */
.hero-image-accent {
  position: absolute;
  inset: -8px;
  border-radius: var(--radius-2xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  z-index: -1;
  opacity: 0.5;
  filter: blur(20px);
  animation: pulse-glow 4s ease-in-out infinite;
}

/* Decorative floating badge on image */
.hero-image-wrapper::after {
  content: '50+ Articles';
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-secondary);
  letter-spacing: 0.02em;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

[data-theme="dark"] .hero-image-wrapper::after {
  background: rgba(22, 22, 58, 0.85);
  color: var(--color-secondary-light);
}

.hero h1 {
  font-size: var(--fs-display);
  margin-bottom: var(--space-xl);
  line-height: 0.95;
  letter-spacing: -0.05em;
  font-weight: 900;
  font-variation-settings: 'opsz' 144;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
  padding-right: 0.05em;
}

.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 0.02em;
  left: -0.02em;
  right: 0;
  height: 0.14em;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  border-radius: 3px;
  opacity: 0.25;
  z-index: -1;
}

.hero p {
  font-size: var(--fs-lg);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-2xl);
  max-width: 560px;
  animation: fadeInUp 0.8s ease-out 0.15s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(99, 102, 241, 0.08));
  color: var(--color-secondary);
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: var(--space-xl);
  border: 1px solid rgba(99, 102, 241, 0.15);
  animation: fadeInDown 0.6s ease-out both;
  letter-spacing: 0.02em;
}

[data-theme="dark"] .hero-badge {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(99, 102, 241, 0.12));
  color: var(--color-secondary-light);
  border-color: rgba(99, 102, 241, 0.25);
}

.hero-decoration {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.04) 40%, transparent 70%);
  z-index: 1;
  animation: float 8s ease-in-out infinite;
}

/* Second decorative blob */
.hero-decoration::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -60%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.08) 0%, rgba(249, 115, 22, 0.04) 40%, transparent 70%);
  animation: float 10s ease-in-out 2s infinite reverse;
}

/* ---------- Featured Article ---------- */
.featured-article {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.featured-article-image {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.featured-article-image .placeholder-icon {
  width: 80px;
  height: 80px;
  color: rgba(255, 255, 255, 0.5);
}

.featured-article-content .label {
  margin-bottom: var(--space-md);
}

.featured-article-content h3 {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-md);
}

.featured-article-content h3 a {
  color: var(--color-heading);
}

.featured-article-content h3 a:hover {
  color: var(--color-primary);
}

.featured-article-content p {
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-lg);
}

/* ---------- Article Cards ---------- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.article-card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-slow);
  display: flex;
  flex-direction: column;
  position: relative;
}

.article-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.03) 0%, rgba(29, 78, 216, 0.02) 100%);
  opacity: 0;
  transition: opacity var(--transition-slow);
  z-index: 0;
  pointer-events: none;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(99, 102, 241, 0.3);
}

.article-card:hover::before {
  opacity: 1;
}

.article-card-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
}

.article-card-image .placeholder-img {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card-image img {
  transform: scale(1.05);
}

.featured-article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-xl);
  transition: transform var(--transition-slow);
}

.featured-article:hover .featured-article-image img {
  transform: scale(1.03);
}

.featured-article-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.placeholder-img svg {
  width: 48px;
  height: 48px;
  color: rgba(255, 255, 255, 0.5);
}

.article-card-body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.article-card-meta .category {
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.article-card-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background-color: var(--color-text-muted);
}

.article-card h4 {
  margin-bottom: var(--space-sm);
  font-size: var(--fs-lg);
  line-height: var(--lh-tight);
}

.article-card h4 a {
  color: var(--color-heading);
}

.article-card h4 a:hover {
  color: var(--color-primary);
}

.article-card p {
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  flex: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.article-card-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-primary-dark);
}

/* ---------- Categories Section ---------- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.category-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-slow);
  text-decoration: none;
  display: block;
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  transform: scaleX(0);
  transition: transform var(--transition-slow);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(99, 102, 241, 0.25);
}

.category-card:hover::after {
  transform: scaleX(1);
}

.category-card:hover .category-icon {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
}

.category-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  transition: all var(--transition-base);
}

.category-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.category-card:hover .category-icon svg {
  color: #fff;
}

.category-card h4 {
  font-size: var(--fs-base);
  margin-bottom: var(--space-xs);
  color: var(--color-heading);
}

.category-card p {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* ---------- Team Section ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.team-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-slow);
  position: relative;
}

.team-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(99, 102, 241, 0.25);
}

.team-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: #fff;
  font-family: var(--font-heading);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-base);
}

.team-card:hover .team-avatar {
  transform: scale(1.08);
}

.team-card h4 {
  font-size: var(--fs-base);
  margin-bottom: var(--space-xs);
}

.team-card .role {
  font-size: var(--fs-sm);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.team-card p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-sm);
}

.team-card .interest {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-style: italic;
}

.team-card .grade {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-bg-alt);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  margin-top: var(--space-sm);
}

/* ---------- CTA Sections ---------- */
.cta-section {
  background:
    radial-gradient(ellipse 60% 80% at 20% 100%, rgba(244, 63, 94, 0.2) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 0%, rgba(99, 102, 241, 0.25) 0%, transparent 60%),
    linear-gradient(135deg, #0891b2 0%, #6366f1 100%);
  color: #fff;
  text-align: center;
  padding: var(--space-5xl) 0;
  border-radius: 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

.cta-section h2 {
  color: #fff;
  margin-bottom: var(--space-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fs-md);
  max-width: 560px;
  margin: 0 auto var(--space-xl);
  line-height: var(--lh-relaxed);
}

.cta-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Newsletter ---------- */
.newsletter-section {
  background-color: var(--color-bg-alt);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.newsletter-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.06) 0%, transparent 70%);
}

.newsletter-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.newsletter-inner h3 {
  margin-bottom: var(--space-sm);
}

.newsletter-inner > p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.newsletter-form {
  display: flex;
  gap: var(--space-sm);
}

.newsletter-form input {
  flex: 1;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: var(--fs-sm);
  outline: none;
  transition: border-color var(--transition-fast);
}

.newsletter-form input:focus {
  border-color: var(--color-primary);
}

.newsletter-form input::placeholder {
  color: var(--color-text-muted);
}

/* ---------- About Platform Section ---------- */
.about-platform {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-platform-text h2 {
  margin-bottom: var(--space-md);
}

.about-platform-text p {
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-md);
}

.about-platform-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.stat-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-slow);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.25);
}

.stat-card .number {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  font-variation-settings: 'opsz' 144;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-card .stat-label {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ---------- Footer ---------- */
.site-footer {
  background:
    radial-gradient(ellipse 50% 40% at 10% 0%, rgba(6, 182, 212, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 90% 100%, rgba(99, 102, 241, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 30% 30% at 50% 50%, rgba(244, 63, 94, 0.04) 0%, transparent 60%),
    var(--color-bg-footer);
  color: var(--color-text-inverse);
  padding: var(--space-5xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand p {
  color: #94a3b8;
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  margin-top: var(--space-md);
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  transform: translateY(-2px);
}

.footer-social a svg {
  width: 18px;
  height: 18px;
}

.footer-column h5 {
  color: #f1f5f9;
  font-size: var(--fs-sm);
  font-family: var(--font-body);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
}

.footer-column a {
  display: block;
  color: #94a3b8;
  font-size: var(--fs-sm);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-sm);
  color: #64748b;
}

.footer-bottom a {
  color: #94a3b8;
}

.footer-bottom a:hover {
  color: var(--color-primary-light);
}

/* ---------- Page Headers ---------- */
.page-header {
  background:
    radial-gradient(ellipse 70% 50% at 20% 100%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 80% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(244, 63, 94, 0.04) 0%, transparent 50%),
    var(--color-bg);
  padding: var(--space-5xl) 0 var(--space-2xl);
  text-align: center;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--color-secondary) 0.5px, transparent 0.5px);
  background-size: 32px 32px;
  opacity: 0.035;
}

.page-header h1 {
  animation: fadeInUp 0.7s ease-out both;
}

.page-header p {
  animation: fadeInUp 0.7s ease-out 0.1s both;
}

[data-theme="dark"] .page-header {
  background:
    radial-gradient(ellipse 70% 50% at 30% 100%, rgba(13, 148, 136, 0.1) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 70% 0%, rgba(29, 78, 216, 0.06) 0%, transparent 60%),
    var(--color-bg);
}

.page-header h1 {
  margin-bottom: var(--space-md);
}

.page-header p {
  color: var(--color-text-secondary);
  font-size: var(--fs-md);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--lh-relaxed);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

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

.breadcrumb a:hover {
  color: var(--color-primary);
}

/* ---------- Article Detail ---------- */
.article-header {
  text-align: center;
  padding: var(--space-2xl) 0;
}

.article-header .category-tag {
  display: inline-block;
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.article-header h1 {
  font-size: var(--fs-4xl);
  max-width: 800px;
  margin: 0 auto var(--space-md);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  flex-wrap: wrap;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.article-meta-item svg {
  width: 16px;
  height: 16px;
}

.article-cover {
  aspect-ratio: 21 / 9;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-body {
  font-size: var(--fs-md);
  line-height: var(--lh-relaxed);
  color: var(--color-text);
}

.article-body h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  font-size: var(--fs-2xl);
}

.article-body h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  font-size: var(--fs-xl);
}

.article-body p {
  margin-bottom: var(--space-lg);
}

.article-body ul,
.article-body ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.article-body li {
  list-style: disc;
  margin-bottom: var(--space-sm);
}

.article-body ol li {
  list-style: decimal;
}

.article-body blockquote {
  border-left: 3px solid transparent;
  border-image: linear-gradient(to bottom, var(--color-primary), var(--color-accent)) 1;
  padding-left: var(--space-xl);
  margin: var(--space-xl) 0;
  font-style: italic;
  color: var(--color-text-secondary);
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  line-height: var(--lh-relaxed);
  position: relative;
}

.article-body blockquote::before {
  content: '\201C';
  position: absolute;
  left: -0.1em;
  top: -0.3em;
  font-size: 4rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.25;
  font-family: var(--font-heading);
  line-height: 1;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tag:hover {
  background-color: var(--color-primary);
  color: #fff;
}

.author-box {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-xl);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  margin-top: var(--space-2xl);
}

.author-box-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xl);
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.author-box h4 {
  font-size: var(--fs-base);
  margin-bottom: var(--space-xs);
}

.author-box .role {
  font-size: var(--fs-sm);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.author-box p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
}

/* ---------- Related Posts ---------- */
.related-posts {
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.related-posts h3 {
  margin-bottom: var(--space-xl);
}

/* ---------- Search & Filters ---------- */
.search-filters {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 280px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: var(--fs-sm);
  outline: none;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-box input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.08);
}

.search-box svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
}

.filter-tags {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  align-items: center;
}

.filter-tag {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-tag:hover {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.filter-tag.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.3);
}

/* ---------- Forms ---------- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: var(--space-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.08);
}

.form-group input,
.form-group textarea,
.form-group select {
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form-note {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ---------- Values Grid ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

.value-card {
  text-align: center;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.value-card .value-icon {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-sm);
}

.value-card h5 {
  font-size: var(--fs-sm);
  margin-bottom: var(--space-xs);
}

.value-card p {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

/* ---------- Disclaimer ---------- */
.disclaimer {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-warning);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin: var(--space-xl) 0;
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
}

.disclaimer strong {
  color: var(--color-heading);
}

/* ---------- Founder Story ---------- */
.founder-story {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-2xl);
  align-items: start;
  padding: var(--space-2xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3xl);
}

.founder-story .team-avatar {
  width: 220px;
  height: 220px;
  font-size: var(--fs-4xl);
}

.founder-story h3 {
  margin-bottom: var(--space-sm);
}

.founder-story .role {
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.founder-story p {
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-md);
}

.founder-story blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-lg);
  font-style: italic;
  color: var(--color-heading);
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  margin: var(--space-lg) 0;
}

/* ---------- Roles Available ---------- */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.role-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.role-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.role-card h4 {
  font-size: var(--fs-base);
  margin-bottom: var(--space-sm);
}

.role-card p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
}

/* ---------- Contact Info ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-3xl);
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-info-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.contact-info-card .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact-info-card .icon svg {
  width: 22px;
  height: 22px;
}

.contact-info-card h4 {
  font-size: var(--fs-sm);
  margin-bottom: var(--space-xs);
}

.contact-info-card p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

/* ---------- Guidelines ---------- */
.guidelines-list {
  list-style: none;
}

.guidelines-list li {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  align-items: flex-start;
}

.guidelines-list .check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--fs-xs);
  margin-top: 2px;
}

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
}

.pagination a,
.pagination span {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.pagination a:hover {
  background-color: var(--color-surface);
  color: var(--color-primary);
}

.pagination .active {
  background-color: var(--color-primary);
  color: #fff;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root {
    --fs-display: 4.5rem;
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .values-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .roles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-article {
    grid-template-columns: 1fr;
  }
  .about-platform {
    grid-template-columns: 1fr;
  }
  .founder-story {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .founder-story .team-avatar {
    margin: 0 auto var(--space-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --fs-display: 2.75rem;
    --fs-5xl: 2.5rem;
    --fs-4xl: 2rem;
    --fs-3xl: 1.75rem;
    --fs-2xl: 1.5rem;
  }

  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero {
    padding: var(--space-2xl) 0;
  }

  .hero > .container {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero-image-wrapper img {
    aspect-ratio: 16 / 9;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .categories-grid {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .roles-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .search-filters {
    flex-direction: column;
  }

  .search-box {
    min-width: 100%;
  }

  .article-header h1 {
    font-size: var(--fs-3xl);
  }

  .hero-decoration {
    display: none;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .values-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    text-align: center;
    justify-content: center;
  }
}

/* ---- Categories page styles (from categories.html inline) ---- */

.categories-page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.category-card-lg {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: left;
  transition: all var(--transition-base);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.category-card-lg:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-light);
}

.category-card-lg:hover .category-icon-lg {
  background-color: var(--color-primary);
  color: #fff;
}

.category-card-lg:hover .category-icon-lg svg {
  color: #fff;
}

.category-icon-lg {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.category-icon-lg svg {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.category-icon-lg--teal  { background-color: rgba(13, 148, 136, 0.1); }
.category-icon-lg--teal  svg { color: #0d9488; }
.category-icon-lg--red   { background-color: rgba(239, 68, 68, 0.1); }
.category-icon-lg--red   svg { color: #ef4444; }
.category-icon-lg--green { background-color: rgba(16, 185, 129, 0.1); }
.category-icon-lg--green svg { color: #10b981; }
.category-icon-lg--blue  { background-color: rgba(59, 130, 246, 0.1); }
.category-icon-lg--blue  svg { color: #3b82f6; }
.category-icon-lg--purple { background-color: rgba(139, 92, 246, 0.1); }
.category-icon-lg--purple svg { color: #8b5cf6; }
.category-icon-lg--orange { background-color: rgba(245, 158, 11, 0.1); }
.category-icon-lg--orange svg { color: #f59e0b; }

.category-card-lg:hover .category-icon-lg--teal,
.category-card-lg:hover .category-icon-lg--red,
.category-card-lg:hover .category-icon-lg--green,
.category-card-lg:hover .category-icon-lg--blue,
.category-card-lg:hover .category-icon-lg--purple,
.category-card-lg:hover .category-icon-lg--orange {
  background-color: var(--color-primary);
}

.category-card-lg:hover .category-icon-lg--teal svg,
.category-card-lg:hover .category-icon-lg--red svg,
.category-card-lg:hover .category-icon-lg--green svg,
.category-card-lg:hover .category-icon-lg--blue svg,
.category-card-lg:hover .category-icon-lg--purple svg,
.category-card-lg:hover .category-icon-lg--orange svg {
  color: #fff;
}

.category-card-lg-header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.category-card-lg-title {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-heading);
  margin: 0;
  line-height: var(--lh-tight);
}

.category-card-lg-desc {
  color: var(--color-text-secondary);
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  margin: 0;
}

.category-card-lg-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.category-count-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-bg-alt);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
}

.category-browse-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.category-browse-link:hover {
  gap: var(--space-sm);
  color: var(--color-primary-dark);
}

.category-browse-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.category-browse-link:hover svg {
  transform: translateX(3px);
}

.card-author-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

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