/* ==========================================================================
   CFRSU RDC — Premium Design System
   ========================================================================== */

:root {
  --primary: #0A2540;
  --primary-light: #0F3460;
  --secondary: #0D6EFD;
  --secondary-light: #3D8BFD;
  --accent: #DC3545;
  --accent-light: #E85563;
  --bg: #FFFFFF;
  --bg-soft: #F8FAFC;
  --bg-muted: #F1F5F9;
  --text: #111827;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border: rgba(10, 37, 64, 0.08);
  --border-strong: rgba(10, 37, 64, 0.15);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.3);
  --shadow-sm: 0 1px 3px rgba(10, 37, 64, 0.04);
  --shadow-md: 0 4px 24px rgba(10, 37, 64, 0.06);
  --shadow-lg: 0 12px 48px rgba(10, 37, 64, 0.08);
  --shadow-xl: 0 24px 64px rgba(10, 37, 64, 0.12);
  --gradient-primary: linear-gradient(135deg, #0A2540 0%, #0D6EFD 100%);
  --gradient-accent: linear-gradient(135deg, #0D6EFD 0%, #DC3545 100%);
  --gradient-soft: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  --gradient-hero: linear-gradient(180deg, rgba(10, 37, 64, 0.85) 0%, rgba(10, 37, 64, 0.65) 50%, rgba(10, 37, 64, 0.92) 100%);
  --font-primary: 'Saira', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  --font-accent: 'Manrope', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 80px;
}

[data-theme="dark"] {
  --bg: #0B1120;
  --bg-soft: #111827;
  --bg-muted: #1E293B;
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --text-light: #64748B;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);
  --glass: rgba(11, 17, 32, 0.82);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.5);
  --gradient-soft: linear-gradient(180deg, #111827 0%, #0B1120 100%);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-secondary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 12px 24px;
  background: var(--secondary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--transition);
}
.skip-link:focus { top: 16px; }

/* Loader */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity 0.5s, visibility 0.5s;
}
.loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader__inner { text-align: center; }
.loader__logo svg { width: 64px; height: 64px; animation: pulse 1.5s ease-in-out infinite; }
.loader__bar {
  width: 120px;
  height: 3px;
  background: var(--bg-muted);
  border-radius: var(--radius-full);
  margin-top: 24px;
  overflow: hidden;
}
.loader__bar span {
  display: block;
  height: 100%;
  width: 40%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: loaderBar 1.2s ease-in-out infinite;
}

@keyframes loaderBar {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}
.nav.scrolled {
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
}
.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  z-index: 10;
}
.nav__logo-icon { width: 36px; height: 36px; flex-shrink: 0; }
.nav__logo-accent { color: var(--secondary); }
.nav:not(.scrolled) .nav__logo-text { color: #fff; }
.nav:not(.scrolled) .nav__logo-accent { color: var(--secondary-light); }

.nav__list {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav__link {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  position: relative;
}
.nav:not(.scrolled) .nav__link { color: rgba(255, 255, 255, 0.85); }
.nav:not(.scrolled) .nav__link:hover,
.nav:not(.scrolled) .nav__link.active { color: #fff; background: rgba(255, 255, 255, 0.1); }
.nav.scrolled .nav__link { color: var(--text-muted); }
.nav.scrolled .nav__link:hover,
.nav.scrolled .nav__link.active { color: var(--text); background: var(--bg-muted); }

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10;
}

.lang-switch {
  display: flex;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 2px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.nav.scrolled .lang-switch {
  background: var(--bg-muted);
  border-color: var(--border);
}
.lang-switch__btn {
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition);
}
.nav.scrolled .lang-switch__btn { color: var(--text-muted); }
.lang-switch__btn.active {
  background: var(--secondary);
  color: #fff;
}
.nav.scrolled .lang-switch__btn.active { background: var(--secondary); color: #fff; }

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.85);
  transition: background var(--transition);
}
.nav.scrolled .theme-toggle { color: var(--text-muted); }
.theme-toggle:hover { background: rgba(255, 255, 255, 0.1); }
.nav.scrolled .theme-toggle:hover { background: var(--bg-muted); }
.theme-toggle__icon { width: 18px; height: 18px; }
[data-theme="dark"] .theme-toggle__icon--light { display: none; }
[data-theme="light"] .theme-toggle__icon--dark,
:root:not([data-theme]) .theme-toggle__icon--dark { display: none; }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
}
.nav__burger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition);
}
.nav.scrolled .nav__burger span { background: var(--text); }
.nav__burger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__burger.active span:nth-child(2) { opacity: 0; }
.nav__burger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav__close {
  display: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-accent);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn--sm { padding: 10px 20px; font-size: 0.8125rem; }
.btn--lg { padding: 16px 32px; font-size: 1rem; }
.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(13, 110, 253, 0.3);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13, 110, 253, 0.4);
}
.btn--ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: transform 8s ease-out;
}
.hero.loaded .hero__bg-img { transform: scale(1); }
.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}
.hero__particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.hero__gradient {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 1;
  animation: float 8s ease-in-out infinite;
}
.hero__gradient--1 {
  width: 500px;
  height: 500px;
  background: var(--secondary);
  top: -10%;
  right: -10%;
}
.hero__gradient--2 {
  width: 400px;
  height: 400px;
  background: var(--accent);
  bottom: 10%;
  left: -5%;
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 120px;
  max-width: 900px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 32px;
  backdrop-filter: blur(8px);
}
.hero__badge svg { width: 16px; height: 16px; color: var(--secondary-light); }

.hero__title {
  font-family: var(--font-primary);
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 24px;
}
.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  max-width: 680px;
  margin-bottom: 40px;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 64px;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(16px);
}
.stat { text-align: center; }
.stat__number {
  font-family: var(--font-primary);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.stat__suffix {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary-light);
}
.stat__label {
  display: block;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 8px;
  line-height: 1.3;
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* Sections */
.section {
  padding: 120px 0;
  position: relative;
}
.section__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}
.section__eyebrow {
  display: inline-block;
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--secondary);
  margin-bottom: 16px;
}
.section__title {
  font-family: var(--font-primary);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 20px;
}
.section__desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* About */
.about { background: var(--gradient-soft); }
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about__visual { position: relative; }
.about__image-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.about__image-wrap img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.about__image-accent {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 60%;
  height: 60%;
  border: 3px solid var(--secondary);
  border-radius: var(--radius-xl);
  z-index: -1;
}
.about__floating-card {
  position: absolute;
  bottom: 32px;
  left: -32px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.about__floating-card svg { width: 32px; height: 32px; color: var(--secondary); flex-shrink: 0; }
.about__floating-card strong {
  display: block;
  font-family: var(--font-accent);
  font-size: 0.9375rem;
}
.about__floating-card span { font-size: 0.8125rem; color: var(--text-muted); }

.about__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.feature-card {
  padding: 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}
.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.1), rgba(13, 110, 253, 0.05));
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}
.feature-card__icon svg { width: 22px; height: 22px; color: var(--secondary); }
.feature-card__title {
  font-family: var(--font-primary);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.feature-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Training */
.training__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.course-card {
  padding: 32px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(13, 110, 253, 0.2);
}
.course-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.course-card__level {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  background: rgba(13, 110, 253, 0.1);
  color: var(--secondary);
  border-radius: var(--radius-full);
}
.course-card__level--intermediate {
  background: rgba(245, 158, 11, 0.1);
  color: #D97706;
}
.course-card__level--advanced {
  background: rgba(220, 53, 69, 0.1);
  color: var(--accent);
}
.course-card__icon { width: 24px; height: 24px; color: var(--text-light); }
.course-card__title {
  font-family: var(--font-primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.3;
}
.course-card__desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 20px;
}
.course-card__meta {
  display: flex;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-bottom: 20px;
}
.course-card__meta span { display: flex; align-items: center; gap: 6px; }
.course-card__meta svg { width: 14px; height: 14px; }
.course-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-accent);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--secondary);
  transition: gap var(--transition);
}
.course-card__link:hover { gap: 12px; }
.course-card__link svg { width: 16px; height: 16px; }

/* E-Learning */
.elearning { background: var(--bg-soft); }
.elearning__toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}
.elearning__search {
  flex: 1;
  min-width: 280px;
  position: relative;
}
.elearning__search svg {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-light);
}
.elearning__search input {
  width: 100%;
  padding: 14px 16px 14px 48px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.elearning__search input:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}
.elearning__filters {
  display: flex;
  gap: 12px;
}
.elearning__filters select {
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text);
  cursor: pointer;
}
.elearning__categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}
.category-pill {
  padding: 8px 20px;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-muted);
  transition: all var(--transition);
}
.category-pill:hover { border-color: var(--secondary); color: var(--secondary); }
.category-pill.active {
  background: var(--secondary);
  border-color: var(--secondary);
  color: #fff;
}
.elearning__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.lms-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition);
}
.lms-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.lms-card.hidden { display: none; }
.lms-card__thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.lms-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.lms-card:hover .lms-card__thumb img { transform: scale(1.05); }
.lms-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 37, 64, 0.3);
  opacity: 0;
  transition: opacity var(--transition);
}
.lms-card:hover .lms-card__play { opacity: 1; }
.lms-card__play svg {
  width: 48px;
  height: 48px;
  color: #fff;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}
.lms-card__progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(255,255,255,0.2);
}
.lms-card__progress-bar {
  height: 100%;
  background: var(--secondary);
  transition: width 1s ease;
}
.lms-card__body { padding: 24px; }
.lms-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.lms-card__tag {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--bg-muted);
  color: var(--text-muted);
}
.lms-card__title {
  font-family: var(--font-primary);
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.3;
}
.lms-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-bottom: 12px;
}
.lms-card__meta span { display: flex; align-items: center; gap: 4px; }
.lms-card__meta svg { width: 13px; height: 13px; }
.lms-card__instructor {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.lms-card__enroll {
  display: block;
  width: 100%;
  padding: 12px;
  background: var(--gradient-primary);
  color: #fff;
  font-family: var(--font-accent);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  text-align: center;
}
.lms-card__enroll:hover {
  box-shadow: 0 4px 16px rgba(13, 110, 253, 0.3);
  transform: translateY(-1px);
}

/* Features */
.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.features__card {
  text-align: center;
  padding: 40px 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition);
}
.features__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13, 110, 253, 0.15);
}
.features__card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.12), rgba(13, 110, 253, 0.04));
  border-radius: var(--radius-lg);
}
.features__card-icon svg { width: 28px; height: 28px; color: var(--secondary); }
.features__card h3 {
  font-family: var(--font-primary);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.features__card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Research */
.research { background: var(--gradient-soft); }
.research__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.research-card {
  padding: 32px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.research-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.research-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.research-card:hover::before { transform: scaleX(1); }
.research-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(10, 37, 64, 0.08), rgba(10, 37, 64, 0.02));
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}
.research-card__icon svg { width: 24px; height: 24px; color: var(--primary); }
[data-theme="dark"] .research-card__icon svg { color: var(--secondary-light); }
.research-card h3 {
  font-family: var(--font-primary);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.research-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}
.research-card__count {
  font-family: var(--font-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--secondary);
}

/* Testimonials */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  padding: 36px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all var(--transition);
}
.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.testimonial-card__quote svg {
  width: 32px;
  height: 32px;
  color: var(--secondary);
  opacity: 0.3;
  margin-bottom: 16px;
}
.testimonial-card p {
  font-size: 1.0625rem;
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 24px;
  color: var(--text);
}
.testimonial-card footer {
  display: flex;
  align-items: center;
  gap: 16px;
}
.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: #fff;
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}
.testimonial-card cite {
  display: block;
  font-style: normal;
  font-family: var(--font-accent);
  font-weight: 600;
  font-size: 0.9375rem;
}
.testimonial-card footer span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* News */
.news__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.news-card {
  display: flex;
  gap: 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition);
}
.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.news-card__image {
  position: relative;
  width: 200px;
  flex-shrink: 0;
  overflow: hidden;
}
.news-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.news-card:hover .news-card__image img { transform: scale(1.05); }
.news-card__date {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: rgba(10, 37, 64, 0.85);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: 4px;
}
.news-card__body {
  padding: 24px 24px 24px 0;
  display: flex;
  flex-direction: column;
}
.news-card__tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--secondary);
  margin-bottom: 8px;
}
.news-card__body h3 {
  font-family: var(--font-primary);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 8px;
}
.news-card__body p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 8px;
}
.news-card__source {
  display: block;
  font-size: 0.75rem;
  color: var(--text-light);
  margin-bottom: 12px;
}
.news-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--secondary);
  transition: gap var(--transition);
}
.news-card__link:hover { gap: 10px; }
.news-card__link svg { width: 14px; height: 14px; }

/* Contact */
.contact { background: var(--bg-soft); }
.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.contact__info .section__title { text-align: left; }
.contact__info .section__desc { text-align: left; margin-bottom: 40px; }
.contact__details { display: flex; flex-direction: column; gap: 24px; }
.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact__detail-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.1), rgba(13, 110, 253, 0.05));
  border-radius: var(--radius-md);
  flex-shrink: 0;
}
.contact__detail-icon svg { width: 20px; height: 20px; color: var(--secondary); }
.contact__detail strong {
  display: block;
  font-family: var(--font-accent);
  font-size: 0.875rem;
  margin-bottom: 4px;
}
.contact__detail span,
.contact__detail a {
  font-size: 0.9375rem;
  color: var(--text-muted);
}
.contact__detail a:hover { color: var(--secondary); }

.contact__form {
  padding: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
  background: var(--bg);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-success {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(34, 197, 94, 0.1);
  color: #16A34A;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Footer */
.footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 80px 0 0;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 16px;
}
.footer__logo svg { width: 36px; height: 36px; }
.footer__mission {
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 24px;
  color: rgba(255, 255, 255, 0.6);
}
.footer__social {
  display: flex;
  gap: 12px;
}
.footer__social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition);
}
.footer__social a:hover {
  background: var(--secondary);
  color: #fff;
  transform: translateY(-2px);
}
.footer__social svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  display: block;
}
.footer__links h4 {
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}
.footer__links li { margin-bottom: 10px; }
.footer__links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}
.footer__links a:hover { color: #fff; }
.footer__newsletter p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
  line-height: 1.6;
}
.footer__newsletter-form {
  display: flex;
  gap: 8px;
}
.footer__newsletter-form input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  color: #fff;
  font-family: inherit;
  font-size: 0.875rem;
}
.footer__newsletter-form input::placeholder { color: rgba(255, 255, 255, 0.4); }
.footer__newsletter-form input:focus {
  outline: none;
  border-color: var(--secondary);
}
.footer__newsletter-form button {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary);
  border-radius: var(--radius-md);
  color: #fff;
  transition: all var(--transition);
  flex-shrink: 0;
}
.footer__newsletter-form button:hover {
  background: var(--secondary-light);
  transform: translateY(-1px);
}
.footer__newsletter-form button svg { width: 18px; height: 18px; }
.footer__bottom {
  padding: 24px 0;
  text-align: center;
}
.footer__bottom p {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  transition-delay: calc(var(--delay, 0) * 0.1s);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .about__grid { grid-template-columns: 1fr; gap: 48px; }
  .about__visual { max-width: 500px; margin: 0 auto; }
  .training__grid { grid-template-columns: repeat(2, 1fr); }
  .elearning__grid { grid-template-columns: repeat(2, 1fr); }
  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .research__grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials__grid { grid-template-columns: 1fr; }
  .contact__wrapper { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-height: 72px; }
  .section { padding: 80px 0; }

  .nav__menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    height: 100dvh;
    margin: 0;
    padding: calc(var(--nav-height) + 40px) 24px 40px;
    z-index: 1100;
    background: var(--bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition), visibility var(--transition);
  }
  .nav__menu.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .nav.menu-open .nav__container {
    position: relative;
    z-index: 1101;
  }
  .nav.menu-open .nav__logo-text { color: var(--text) !important; }
  .nav.menu-open .nav__logo-accent { color: var(--secondary) !important; }
  .nav.menu-open .nav__burger span { background: var(--text); }
  .nav.menu-open .nav__burger {
    visibility: hidden;
    pointer-events: none;
  }
  .nav.menu-open .theme-toggle { color: var(--text-muted); }
  .nav.menu-open .lang-switch {
    background: var(--bg-muted);
    border-color: var(--border);
  }
  .nav.menu-open .lang-switch__btn { color: var(--text-muted); }
  .nav.menu-open .lang-switch__btn.active { color: #fff; }
  .nav__close {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 14px;
    right: 16px;
    width: 44px;
    height: 44px;
    z-index: 1102;
    border-radius: var(--radius-md);
    background: var(--bg-muted);
    color: var(--text);
    transition: background var(--transition), color var(--transition), transform var(--transition);
  }
  .nav__close:hover {
    background: var(--secondary);
    color: #fff;
    transform: scale(1.05);
  }
  .nav__close svg {
    width: 22px;
    height: 22px;
  }
  .nav__list {
    flex-direction: column;
    gap: 4px;
    text-align: center;
    width: 100%;
    max-width: 320px;
  }
  .nav__link {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    padding: 14px 24px;
    color: var(--text) !important;
    border-radius: var(--radius-md);
  }
  .nav__link:hover,
  .nav__link.active {
    background: var(--bg-muted) !important;
    color: var(--secondary) !important;
  }
  .nav__burger { display: flex; }
  .nav__cta { display: none; }

  .hero__stats { grid-template-columns: 1fr 1fr; padding: 24px; gap: 16px; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .about__cards { grid-template-columns: 1fr; }
  .about__floating-card { left: 16px; bottom: 16px; }
  .training__grid { grid-template-columns: 1fr; }
  .elearning__grid { grid-template-columns: 1fr; }
  .features__grid { grid-template-columns: 1fr; }
  .research__grid { grid-template-columns: 1fr; }
  .news__grid { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; }
  .news-card__image { width: 100%; height: 200px; }
  .news-card__body { padding: 24px; }
  .form-row { grid-template-columns: 1fr; }
  .contact__form { padding: 28px; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .elearning__filters { flex-direction: column; width: 100%; }
  .elearning__filters select { width: 100%; }
}

@media (max-width: 480px) {
  .hero__stats { grid-template-columns: 1fr; }
  .hero__scroll { display: none; }
  .lang-switch { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}