/* ===== Variables ===== */
:root {
  --bg: #0a0a0f;
  --bg-alt: #111118;
  --surface: #16161f;
  --surface-hover: #1c1c28;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8e8ed;
  --text-muted: #9494a8;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.35);
  --gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.1));
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 72px;
  --font: 'Inter', system-ui, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  width: min(1140px, 92%);
  margin-inline: auto;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

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

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-logo .dot {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-full {
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(99, 102, 241, 0.12), transparent),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(168, 85, 247, 0.1), transparent),
    radial-gradient(ellipse 50% 40% at 60% 80%, rgba(236, 72, 153, 0.08), transparent);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-light);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-pills {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pill {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  max-width: 280px;
  transition: var(--transition);
}

.pill:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--surface-hover);
}

.pill-icon {
  font-size: 1.25rem;
}

.pill strong {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
}

.pill span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hero-image-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.hero-image-glow {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: var(--gradient);
  filter: blur(80px);
  opacity: 0.25;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero-image-frame {
  position: relative;
  width: min(340px, 90vw);
  aspect-ratio: 1;
  border-radius: 24px;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow), 0 0 60px var(--accent-glow);
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image-caption {
  margin-top: 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* ===== Sections ===== */
.section {
  padding: 5rem 0;
}

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

.section-header {
  margin-bottom: 3rem;
}

.section-header.center {
  text-align: center;
}

.section-header.center .section-subtitle {
  margin-inline: auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-light);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-subtitle {
  margin-top: 0.75rem;
  color: var(--text-muted);
  max-width: 560px;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.about-text strong {
  color: var(--text);
}

.about-location {
  margin-top: 1.5rem !important;
  font-weight: 500;
  color: var(--text) !important;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
}

.stat-card.highlight {
  background: var(--gradient-subtle);
  border-color: rgba(99, 102, 241, 0.25);
}

.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ===== Cards ===== */
.cards-grid {
  display: grid;
  gap: 1.5rem;
}

.three-col {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

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

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-bottom: 1.25rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-tags li {
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-light);
  border-radius: 999px;
}

/* ===== Services ===== */
.service-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.5;
  margin-bottom: 0.5rem;
}

.service-list li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.service-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-light);
}

/* ===== Content ===== */
.featured-video {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 2rem;
}

.featured-video-thumb {
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.video-placeholder {
  aspect-ratio: 16/9;
  background: var(--gradient-subtle);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.play-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border-radius: 50%;
  font-size: 1.25rem;
  color: #fff;
  padding-left: 4px;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.content-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-light);
  margin-bottom: 0.5rem;
}

.featured-video-info h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.featured-video-info p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.content-card {
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.content-card:hover {
  border-color: rgba(99, 102, 241, 0.25);
  transform: translateY(-2px);
}

.content-card-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-light);
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.content-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.content-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.content-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-light);
  transition: var(--transition);
}

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

/* ===== Notes ===== */
.notes-section {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.notes-box {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.notes-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.notes-box h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.notes-box p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.notes-empty {
  margin-top: 1rem;
  font-style: italic;
  opacity: 0.7;
}

.notes-list {
  margin-top: 1rem;
}

.notes-list li {
  margin-bottom: 0.5rem;
}

.notes-list a {
  color: var(--accent-light);
  font-weight: 500;
  transition: var(--transition);
}

.notes-list a:hover {
  color: var(--text);
}

/* ===== Education ===== */
.education-card {
  display: flex;
  gap: 2rem;
  padding: 2.5rem;
  max-width: 720px;
  margin-inline: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.education-card:hover {
  border-color: rgba(99, 102, 241, 0.25);
}

.education-icon {
  font-size: 3rem;
  flex-shrink: 0;
}

.education-degree {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-light);
  margin-bottom: 0.5rem;
}

.education-content h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  margin-bottom: 0.25rem;
}

.education-uni {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem !important;
}

.education-content p:last-child {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: block;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--surface-hover);
}

.contact-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.contact-value {
  font-size: 0.9375rem;
  font-weight: 500;
}

.contact-form {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.contact-form h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.form-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font);
  font-size: 0.9375rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(148, 148, 168, 0.6);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ===== Footer ===== */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-location {
  font-weight: 500;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero-grid,
  .about-grid,
  .featured-video,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .three-col,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .hero-image-wrap {
    order: -1;
  }

  .hero-content {
    text-align: center;
  }

  .hero-desc {
    margin-inline: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-pills {
    align-items: center;
  }

  .stats-grid {
    max-width: 400px;
    margin-inline: auto;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 1rem;
    background: rgba(10, 10, 15, 0.98);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: 0.75rem;
  }

  .education-card {
    flex-direction: column;
    text-align: center;
  }

  .notes-box {
    flex-direction: column;
    text-align: center;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}