@import url('reset.css');
@import url('variables.css');
@import url('animations.css');

html {
  font-size: var(--text-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-deep);
  background: var(--color-surface);
  line-height: 1.7;
}

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

.container {
  width: min(1200px, 90vw);
  margin: 0 auto;
}

.section {
  padding: var(--space-8) 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-6);
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  margin-bottom: var(--space-3);
}

.section-header p {
  color: var(--color-muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: 999px;
  font-size: var(--text-sm);
  background: rgba(79, 70, 229, 0.1);
  color: var(--color-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #7c3aed, var(--color-primary));
  color: white;
  box-shadow: var(--shadow-soft);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: white;
}

.btn-outline {
  border: 1px solid rgba(79, 70, 229, 0.5);
  color: var(--color-primary);
}

.btn-secondary {
  background: var(--color-accent);
  color: white;
}

.btn-cta {
  background: var(--color-warning);
  color: var(--color-deep);
}

.btn-warning {
  background: var(--color-warning);
  color: var(--color-deep);
}

.btn:hover {
  transform: translateY(-3px);
}

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

.tag {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.06);
  font-size: var(--text-xs);
  font-weight: 600;
}

.card {
  background: white;
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid transparent;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.2), rgba(99, 102, 241, 0.05));
  -webkit-mask: linear-gradient(white, white) content-box, linear-gradient(white, white);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
  pointer-events: none;
}

.card h3 {
  font-family: var(--font-heading);
  margin-bottom: var(--space-2);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  z-index: var(--z-header);
}

.announcement-bar {
  background: var(--color-deep);
  color: white;
  font-size: var(--text-sm);
  padding: var(--space-2) 0;
  text-align: center;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
}

.brand {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

.nav {
  flex: 1;
}

.nav > ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.nav a {
  color: var(--color-deep);
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--color-primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(15, 23, 42, 0.1);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-home {
  background: linear-gradient(120deg, #4f46e5 0%, #7c3aed 30%, #f97316 120%);
  color: white;
  padding: var(--space-8) 0 var(--space-7);
}

.hero-home::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../images/abstract_tech_bg_05.png');
  background-size: cover;
  opacity: 0.15;
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  align-items: center;
}

.hero-text h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: var(--space-4);
}

.hero-text p {
  font-size: 1.125rem;
  margin-bottom: var(--space-5);
  color: rgba(255, 255, 255, 0.85);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-data {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

.hero-data-item {
  min-width: 140px;
}

.hero-data-value {
  font-size: 2rem;
  font-weight: 700;
}

.hero-data-label {
  color: rgba(255, 255, 255, 0.7);
}

.hero-illustration {
  position: relative;
}

.hero-illustration img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-strong);
  animation: floatUp 6s ease-in-out infinite;
}

/* Metrics */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.metric-card {
  background: white;
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(79, 70, 229, 0.12);
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  color: var(--color-primary);
}

.metric-label {
  color: var(--color-muted);
}

/* Services */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}

.service-card {
  padding: var(--space-5);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.service-card img {
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.service-card p {
  color: var(--color-muted);
  margin-bottom: var(--space-3);
}

/* Courses Slider */
.course-slider {
  position: relative;
  overflow: hidden;
}

.course-track {
  display: flex;
  gap: var(--space-4);
  transition: transform 0.5s ease;
}

.course-card {
  min-width: 280px;
  flex: 0 0 calc(33.333% - var(--space-4));
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: var(--space-4);
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: var(--space-3) 0;
  color: var(--color-muted);
}

.rating {
  position: relative;
  width: 100px;
  height: 20px;
  background: linear-gradient(90deg, rgba(148, 163, 184, 0.3) 0 100%);
}

.rating::before,
.rating-fill::before {
  content: '★★★★★';
  font-size: 16px;
  letter-spacing: 2px;
}

.rating-fill {
  position: absolute;
  inset: 0;
  width: 0;
  overflow: hidden;
  color: #facc15;
}

.slider-controls {
  position: absolute;
  top: -80px;
  right: 0;
  display: flex;
  gap: var(--space-2);
}

.slider-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: white;
  display: grid;
  place-items: center;
}

/* Teachers */
.teacher-marquee {
  overflow: hidden;
}

.teacher-track {
  display: flex;
  gap: var(--space-4);
  animation: marquee 25s linear infinite;
}

.teacher-card {
  min-width: 240px;
  padding: var(--space-4);
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.teacher-card img {
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
}

/* Success stories */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.story-card {
  background: white;
  border-radius: var(--radius-md);
  padding: var(--space-4);
  border: 1px solid rgba(79, 70, 229, 0.1);
}

.story-card header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.story-card img {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  object-fit: cover;
}

/* Partners */
.partner-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-4);
  align-items: center;
}

.partner-logos img {
  filter: grayscale(1);
  opacity: 0.7;
  transition: opacity 0.2s ease, filter 0.2s ease;
}

.partner-logos img:hover {
  filter: none;
  opacity: 1;
}

/* CTA */
.cta-panel {
  background: linear-gradient(120deg, #4f46e5, #7c3aed);
  color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.cta-panel h2 {
  font-size: 2.25rem;
  margin-bottom: var(--space-3);
}

.cta-panel p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-4);
}

/* Page Hero */
.page-hero {
  background: linear-gradient(120deg, rgba(79, 70, 229, 0.95), rgba(99, 102, 241, 0.85));
  color: white;
  padding: var(--space-7) 0;
  position: relative;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../images/abstract_tech_bg_04.png');
  opacity: 0.15;
}

.page-hero .container {
  position: relative;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumbs {
  display: flex;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
  margin-top: var(--space-2);
}

/* Content layouts */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
}

.timeline {
  position: relative;
  margin-top: var(--space-6);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(79, 70, 229, 0.3);
}

.timeline-item {
  position: relative;
  padding-left: var(--space-7);
  margin-bottom: var(--space-5);
}

.timeline-item::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  left: 4px;
  top: 6px;
}

.stat-list {
  display: grid;
  gap: var(--space-3);
}

.stat-list li {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.05);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.team-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: white;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.team-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto var(--space-3);
  object-fit: cover;
}

.partner-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid rgba(79, 70, 229, 0.15);
  background: white;
}

.news-list {
  display: grid;
  gap: var(--space-4);
}

.news-card {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr 2fr;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: white;
  box-shadow: var(--shadow-card);
}

.news-card img {
  border-radius: var(--radius-md);
  height: 180px;
  object-fit: cover;
}

.news-card h3 {
  margin-bottom: var(--space-2);
}

.news-meta {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-3);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.case-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid rgba(79, 70, 229, 0.1);
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.filter-tabs button {
  padding: var(--space-2) var(--space-3);
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  background: white;
}

.filter-tabs button.active {
  background: rgba(79, 70, 229, 0.12);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.job-board {
  display: grid;
  gap: var(--space-4);
}

.job-card {
  padding: var(--space-4);
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: var(--shadow-card);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-6);
}

.form-control {
  width: 100%;
  border: 1px solid rgba(15, 23, 42, 0.15);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  background: rgba(248, 250, 252, 0.9);
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

select.form-control {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='%236c6f7c' d='M5.3 7.3a1 1 0 0 1 1.4 0L10 10.6l3.3-3.3a1 1 0 1 1 1.4 1.4l-4 4a1 1 0 0 1-1.4 0l-4-4a1 1 0 0 1 0-1.4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: calc(var(--space-3) * 3);
  cursor: pointer;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-feedback {
  font-size: var(--text-sm);
  color: var(--color-accent);
  min-height: 20px;
}

.map-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

/* Footer */
.footer {
  background: var(--color-deep);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-7) 0 var(--space-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5);
}

.footer h3 {
  color: white;
  margin-bottom: var(--space-3);
}

.footer-links {
  display: grid;
  gap: var(--space-2);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  font-size: var(--text-sm);
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-4);
}

.table th,
.table td {
  padding: var(--space-3);
  text-align: left;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.table th {
  background: rgba(79, 70, 229, 0.08);
}

blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--space-4);
  margin: var(--space-4) 0;
  color: var(--color-muted);
}

/* Utility */
.chip {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background: rgba(79, 70, 229, 0.08);
  font-size: var(--text-sm);
}

.highlight {
  color: var(--color-accent);
}

.list-check li {
  position: relative;
  padding-left: var(--space-5);
}

.list-check li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: var(--color-success);
}