/* ============================
   VARIABLES & RESET
   ============================ */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1524;
  --bg-card: #141b2d;
  --bg-card-hover: #1a2340;
  --text-primary: #e4e8f1;
  --text-secondary: #8892a8;
  --accent: #00b4ff;
  --accent-glow: rgba(0, 180, 255, 0.35);
  --accent-dim: rgba(0, 180, 255, 0.10);
  --accent-border: rgba(0, 180, 255, 0.25);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --transition: 0.3s ease;
  --max-width: 1100px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: #33c5ff;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================
   NAVBAR
   ============================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--accent-border);
  transition: background var(--transition);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-logo .accent {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: width var(--transition);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

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

/* ============================
   HERO
   ============================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-name {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Ambient glow */
.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: pulse-glow 6s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.1); }
}

/* ============================
   BUTTONS
   ============================ */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  border: 2px solid var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
  background: #33c5ff;
  border-color: #33c5ff;
  color: var(--bg-primary);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent-border);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ============================
   SECTIONS
   ============================ */
.section {
  padding: 100px 0;
}

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

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 48px;
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 2px;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ============================
   ABOUT
   ============================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.about-stats {
  display: flex;
  gap: 24px;
}

.stat-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

.stat-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-4px);
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  display: inline;
}

.stat-plus {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ============================
   EXPERIENCE
   ============================ */
.experience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.exp-card {
  background: var(--bg-card);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
}

.exp-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-4px);
}

.exp-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.exp-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.exp-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================
   INTERESTS
   ============================ */
.interests-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.interest-tag {
  background: var(--bg-card);
  border: 1px solid var(--accent-border);
  border-radius: 50px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  cursor: default;
}

.interest-tag:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
  transform: translateY(-2px);
}

/* ============================
   CONNECT
   ============================ */
.connect-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 40px;
  margin-top: -24px;
}

.connect-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.connect-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 20px 36px;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.connect-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-4px);
}

.connect-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* ============================
   FOOTER
   ============================ */
.footer {
  padding: 32px 0;
  text-align: center;
  border-top: 1px solid var(--accent-border);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ============================
   ANIMATIONS (scroll-in)
   ============================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 23, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    border-bottom: 1px solid var(--accent-border);
  }

  .nav-links.open {
    max-height: 300px;
    padding: 16px 0;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    padding: 14px 0;
    font-size: 1rem;
  }

  .nav-links a::after {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-stats {
    justify-content: center;
  }

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

  .hero {
    padding: 100px 20px 60px;
  }

  .section {
    padding: 72px 0;
  }
}

@media (max-width: 480px) {
  .about-stats {
    flex-direction: column;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .connect-card {
    width: 100%;
    justify-content: center;
  }
}