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

:root {
  --bg: #0d1117;
  --bg-dark: #080c10;
  --surface: #161b22;
  --surface-hover: #1f2937;
  --accent: #e07b39;
  --accent-glow: rgba(224, 123, 57, 0.25);
  --accent-2: #f59e0b;
  --text: #e8eaf0;
  --text-muted: #8b949e;
  --border: #21262d;
  --radius: 12px;
  --nav-h: 64px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}

/* ============================================================
   Navigation
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  font-family: monospace;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.lang-toggle {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.3rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
}

.lang-toggle:hover {
  background: var(--accent);
  color: var(--bg);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  filter: brightness(0.55) saturate(1.2);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(13,17,23,0.3) 0%,
    rgba(13,17,23,0.15) 40%,
    rgba(13,17,23,0.75) 80%,
    var(--bg) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 1.5rem;
  animation: fadeUp 1s ease both;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--accent-2);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.hero-name {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  color: #fff;
  text-shadow: 0 2px 30px rgba(0,0,0,0.5);
  margin-bottom: 1rem;
}

.hero-tagline {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 2.5rem;
  letter-spacing: 1px;
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-hint span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 12px;
  position: relative;
}

.scroll-hint span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.7);
  border-radius: 2px;
  animation: scrollBounce 1.8s infinite;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn-primary {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.35);
}

.btn-large {
  padding: 1rem 3rem;
  font-size: 1.05rem;
}

/* ============================================================
   Sections
   ============================================================ */
.section {
  padding: 6rem 0;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-label {
  font-family: monospace;
  font-size: 0.8rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 3rem;
  color: #fff;
}

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

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
}

.about-image-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

.about-image-card img {
  width: 100%;
  display: block;
  aspect-ratio: 16/10;
  object-fit: cover;
  object-position: center top;
  filter: saturate(1.15);
}

.about-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.8rem;
}

.about-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.about-link--linkedin {
  background: #0a66c2;
  color: #fff;
  border-color: #0a66c2;
}

.about-link--github {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.about-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.about-link--linkedin:hover {
  border-color: #0958a8;
  background: #0958a8;
}

.about-link--github:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.img-caption {
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--surface);
  font-style: italic;
}

/* ============================================================
   Skills
   ============================================================ */
.top-skills {
  margin-bottom: 3rem;
  text-align: center;
}

.top-skills-label {
  font-family: monospace;
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.top-skills-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.top-skill {
  display: inline-block;
  padding: 0.55rem 1.4rem;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 1px;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.top-skill:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.skill-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.skill-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.skill-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-2);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.skill-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.skill-card li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
}

.skill-card li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ============================================================
   Projects
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.project-card--placeholder {
  border-style: dashed;
  opacity: 0.65;
}

.project-tag {
  display: inline-block;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 0.2rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.project-card h3 {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 0.75rem;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 1.2rem;
}

.project-card p a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition);
}

.project-card p a:hover {
  color: var(--accent-2);
}

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

.project-tags span {
  background: var(--surface-hover);
  color: var(--text-muted);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
  font-size: 0.78rem;
  font-family: monospace;
}

.project-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.project-links a {
  font-size: 0.88rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition);
}

.project-links a:hover {
  color: var(--accent-2);
}

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

.footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-sub {
  margin-top: 0.3rem;
  font-size: 0.78rem !important;
  opacity: 0.5;
}

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

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  60%       { transform: translateX(-50%) translateY(14px); opacity: 0; }
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

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

  .about-image-card {
    order: -1;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: 0 1rem;
  }

  .section {
    padding: 4rem 0;
  }
}