/* ────────────────────────────────────────
   DESIGN TOKENS
   ──────────────────────────────────────── */
:root {
  --bg-primary:   #0a0e17;
  --bg-secondary: #111827;
  --bg-card:      #161e2e;
  --bg-card-hover:#1c2740;
  --text-primary: #e2e8f0;
  --text-secondary:#94a3b8;
  --accent:       #38bdf8;
  --accent-alt:   #a78bfa;
  --gradient:     linear-gradient(135deg, var(--accent), var(--accent-alt));
  --border:       rgba(148,163,184,.12);
  --font:         'JetBrains Mono', monospace;
  --nav-h:        64px;
  --section-pad:  100px 0;
  --radius:       12px;
  --transition:   .35s cubic-bezier(.4,0,.2,1);
}

/* ────────────────────────────────────────
   RESET & BASE
   ──────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

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

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

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-alt); }
strong { color: var(--accent); font-weight: 600; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ────────────────────────────────────────
   NAVIGATION
   ──────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px;
  background: rgba(10, 14, 23, .82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background var(--transition);
}

.nav-logo {
  font-size: 1.25rem; font-weight: 700;
  background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  color: var(--text-secondary); font-size: .85rem; font-weight: 500;
  position: relative; transition: color var(--transition);
}

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

.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }

/* hamburger */
.menu-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px; z-index: 1001;
}
.menu-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text-primary);
  transition: var(--transition);
}

/* ────────────────────────────────────────
   HERO
   ──────────────────────────────────────── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
}

/* ── Animated background shapes ── */
.hero-bg {
  position: absolute; inset: 0; z-index: 0; overflow: hidden;
}

.shape {
  position: absolute; border-radius: 50%;
  filter: blur(100px); opacity: .25; will-change: transform;
}

.shape-1 {
  width: 500px; height: 500px;
  background: var(--accent);
  top: -120px; left: -100px;
  animation: float1 18s ease-in-out infinite;
}
.shape-2 {
  width: 400px; height: 400px;
  background: var(--accent-alt);
  bottom: -80px; right: -60px;
  animation: float2 22s ease-in-out infinite;
}
.shape-3 {
  width: 300px; height: 300px;
  background: #f472b6;
  top: 50%; left: 60%;
  animation: float3 20s ease-in-out infinite;
}
.shape-4 {
  width: 200px; height: 200px;
  background: var(--accent);
  bottom: 20%; left: 10%;
  animation: float1 15s ease-in-out infinite reverse;
}
.shape-5 {
  width: 250px; height: 250px;
  background: var(--accent-alt);
  top: 10%; right: 20%;
  animation: float2 17s ease-in-out infinite reverse;
}

@keyframes float1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(60px, -40px) scale(1.1); }
  66%      { transform: translate(-30px, 50px) scale(.95); }
}
@keyframes float2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(-50px, 60px) scale(1.05); }
  66%      { transform: translate(40px, -30px) scale(.9); }
}
@keyframes float3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(-70px, -50px) scale(1.15); }
}

/* grid overlay */
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148,163,184,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* hero content */
.hero-content {
  position: relative; z-index: 1;
  padding: 0 24px;
}

.hero-greeting {
  font-size: .95rem; color: var(--accent); margin-bottom: 12px;
  letter-spacing: 2px; text-transform: uppercase;
  opacity: 0; animation: fadeUp .8s .2s forwards;
}

.hero-name {
  font-size: clamp(2.4rem, 7vw, 5rem);
  font-weight: 700; line-height: 1.1;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  opacity: 0; animation: fadeUp .8s .4s forwards;
}

/* glitch effect on hover */
.glitch { position: relative; }
.glitch:hover::before,
.glitch:hover::after {
  content: attr(data-text);
  position: absolute; left: 0; top: 0; width: 100%;
  background: var(--bg-primary);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.glitch:hover::before {
  animation: glitch-1 .3s linear infinite;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
  -webkit-text-fill-color: rgba(56,189,248,.8);
}
.glitch:hover::after {
  animation: glitch-2 .3s linear infinite;
  clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
  -webkit-text-fill-color: rgba(167,139,250,.8);
}
@keyframes glitch-1 {
  0% { transform: translate(0); }
  20% { transform: translate(-3px, 3px); }
  40% { transform: translate(3px, -3px); }
  60% { transform: translate(-2px, 1px); }
  80% { transform: translate(2px, -1px); }
  100% { transform: translate(0); }
}
@keyframes glitch-2 {
  0% { transform: translate(0); }
  20% { transform: translate(3px, -2px); }
  40% { transform: translate(-3px, 2px); }
  60% { transform: translate(1px, -3px); }
  80% { transform: translate(-1px, 3px); }
  100% { transform: translate(0); }
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--text-secondary); margin-bottom: 40px;
  opacity: 0; animation: fadeUp .8s .6s forwards;
}

.typed-text { color: var(--accent); }
.cursor {
  display: inline-block; color: var(--accent);
  animation: blink .7s step-end infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}

.cta-btn {
  display: inline-block;
  padding: 14px 36px;
  border: 2px solid transparent;
  border-radius: 50px;
  background: var(--gradient);
  color: var(--bg-primary);
  font-family: var(--font);
  font-weight: 600; font-size: .9rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  opacity: 0; animation: fadeUp .8s .8s forwards;
}
.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(56,189,248,.3);
  color: var(--bg-primary);
}

/* scroll indicator */
.scroll-indicator {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  opacity: 0; animation: fadeUp .8s 1.2s forwards;
}
.mouse {
  width: 26px; height: 40px; border: 2px solid var(--text-secondary);
  border-radius: 14px; position: relative;
}
.wheel {
  width: 4px; height: 8px; background: var(--accent); border-radius: 2px;
  position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
  animation: scroll-wheel 2s ease-in-out infinite;
}
@keyframes scroll-wheel {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ────────────────────────────────────────
   SHARED SECTION STYLES
   ──────────────────────────────────────── */
.section {
  padding: var(--section-pad);
}
.section:nth-child(even) {
  background: var(--bg-secondary);
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 48px; text-align: center;
}
.section-number {
  color: var(--accent); font-size: .85em; margin-right: 8px;
}

/* ── Reveal animation ── */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity .7s var(--transition), transform .7s var(--transition);
  transition-delay: var(--delay, 0s);
}
.reveal.visible {
  opacity: 1; transform: translateY(0);
}

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

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

.about-text p {
  color: var(--text-secondary); margin-bottom: 16px; font-size: .92rem;
}

/* terminal card */
.terminal-card {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
  transform: perspective(800px) rotateY(-4deg) rotateX(2deg);
  transition: transform .6s var(--transition);
}
.terminal-card:hover {
  transform: perspective(800px) rotateY(0deg) rotateX(0deg);
}

.terminal-header {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: #161b22;
  border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red    { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green  { background: #28c840; }
.terminal-title {
  margin-left: auto; font-size: .7rem; color: var(--text-secondary);
}

.terminal-body {
  padding: 20px; font-size: .8rem; line-height: 1.9;
}
.terminal-body .prompt { color: #28c840; margin-right: 8px; }
.terminal-body .json-line { margin-left: 0; }
.terminal-body .indent { margin-left: 20px; }
.terminal-body .brace { color: var(--text-primary); }
.terminal-body .key { color: var(--accent); }
.terminal-body .value { color: #fbbf24; }

/* ────────────────────────────────────────
   SKILLS
   ──────────────────────────────────────── */
.skills-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative; overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--gradient); opacity: 0;
  transition: opacity var(--transition);
  z-index: 0;
}
.skill-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 16px 48px rgba(56,189,248,.12);
}
.skill-card:hover::before { opacity: .06; }
.skill-card > * { position: relative; z-index: 1; }

.skill-icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  color: var(--accent);
  transition: color var(--transition), transform var(--transition);
}
.skill-card:hover .skill-icon { color: var(--accent-alt); transform: scale(1.15) rotate(-5deg); }

.skill-card h3 {
  font-size: 1.05rem; margin-bottom: 10px; font-weight: 600;
}
.skill-card p {
  font-size: .8rem; color: var(--text-secondary); margin-bottom: 20px;
  line-height: 1.6;
}

/* progress bar */
.skill-bar {
  height: 4px; background: rgba(148,163,184,.15); border-radius: 4px; overflow: hidden;
}
.skill-fill {
  height: 100%; width: 0; border-radius: 4px;
  background: var(--gradient);
  transition: width 1.2s cubic-bezier(.22,.61,.36,1);
}
.skill-card.visible .skill-fill,
.reveal.visible .skill-fill {
  width: var(--fill);
}

/* ────────────────────────────────────────
   PROJECTS
   ──────────────────────────────────────── */
.projects-grid {
  display: flex; flex-direction: column; gap: 40px;
}

.project-card {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,.3);
}

.project-card:nth-child(even) { direction: rtl; }
.project-card:nth-child(even) > * { direction: ltr; }

.project-preview {
  background: #0d1117;
  display: flex; align-items: center; justify-content: center;
  padding: 32px;
  border-right: 1px solid var(--border);
  min-height: 220px;
}

.project-card:nth-child(even) .project-preview {
  border-right: none; border-left: 1px solid var(--border);
}

.code-preview {
  font-size: .78rem; line-height: 1.9; color: var(--text-secondary);
  font-family: var(--font);
}
.code-tag  { color: #f472b6; }
.code-attr { color: var(--accent); }
.code-val  { color: #fbbf24; }
.code-fn   { color: var(--accent-alt); }
.code-indent { display: inline-block; width: 24px; }

.project-info {
  padding: 32px;
  display: flex; flex-direction: column; justify-content: center;
}
.project-label {
  font-size: .7rem; text-transform: uppercase; letter-spacing: 2px;
  color: var(--accent); margin-bottom: 8px;
}
.project-info h3 {
  font-size: 1.3rem; margin-bottom: 12px; font-weight: 700;
}
.project-info p {
  font-size: .85rem; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.7;
}

.project-tech {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.project-tech span {
  font-size: .7rem; padding: 4px 12px;
  background: rgba(56,189,248,.1);
  color: var(--accent); border-radius: 20px;
  border: 1px solid rgba(56,189,248,.2);
}

/* ────────────────────────────────────────
   FOOTER
   ──────────────────────────────────────── */
.footer {
  padding: 40px 24px; text-align: center;
  font-size: .8rem; color: var(--text-secondary);
}
.footer-line {
  width: 60px; height: 2px; background: var(--gradient);
  margin: 0 auto 20px; border-radius: 2px;
}
.footer strong { color: var(--accent); }
.footer-sub { margin-top: 6px; font-size: .7rem; opacity: .5; }

/* ────────────────────────────────────────
   RESPONSIVE
   ──────────────────────────────────────── */
@media (max-width: 900px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .project-card { grid-template-columns: 1fr; }
  .project-card:nth-child(even) { direction: ltr; }
  .project-preview {
    border-right: none; border-bottom: 1px solid var(--border);
    min-height: 160px;
  }
  .project-card:nth-child(even) .project-preview {
    border-left: none; border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 768px) {
  :root { --section-pad: 64px 0; }

  .navbar { padding: 0 20px; }

  .nav-links {
    position: fixed; inset: 0;
    flex-direction: column; align-items: center; justify-content: center;
    gap: 24px;
    background: rgba(10, 14, 23, .96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(100%);
    transition: transform .4s var(--transition);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.2rem; }

  .menu-toggle { display: flex; }
  .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .terminal-card { transform: none; }
  .skills-grid { grid-template-columns: 1fr; }

  .hero-name { font-size: clamp(2rem, 10vw, 3rem); }
}

/* ────────────────────────────────────────
   UTILITIES / PARTICLES
   ──────────────────────────────────────── */
::selection {
  background: rgba(56,189,248,.3); color: #fff;
}

/* Smooth page transitions */
body {
  opacity: 0; animation: pageLoad .6s .1s forwards;
}
@keyframes pageLoad {
  to { opacity: 1; }
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--bg-card-hover); border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }