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

:root {
  --bg:        #0a0e17;
  --bg2:       #0f1521;
  --bg3:       #161d2e;
  --accent:    #6c63ff;
  --accent2:   #00d4ff;
  --text:      #e2e8f0;
  --text-muted:#8892a4;
  --border:    rgba(108,99,255,0.18);
  --radius:    12px;
  --font:      'Inter', sans-serif;
  --mono:      'JetBrains Mono', monospace;
  --nav-h:     64px;
}

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
strong { color: var(--accent2); font-weight: 600; }

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ============================================
   UTILITIES
   ============================================ */
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 4px 20px rgba(108,99,255,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108,99,255,0.5);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline:hover {
  background: rgba(108,99,255,0.1);
  transform: translateY(-2px);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 60px;
}
.section-tag {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  white-space: nowrap;
}
.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  white-space: nowrap;
}
.section-header .line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ============================================
   NAV
   ============================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: background 0.3s, box-shadow 0.3s;
}
#navbar.scrolled {
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}
.nav-logo .dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}
.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1.5px;
  background: var(--accent);
  transition: width 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ============================================
   HERO
   ============================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  padding: 0 clamp(24px, 6vw, 100px);
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  top: -20%; left: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(108,99,255,0.12) 0%, transparent 70%);
  pointer-events: none;
}
#hero::after {
  content: '';
  position: absolute;
  bottom: -10%; right: -5%;
  width: 50%;
  height: 70%;
  background: radial-gradient(ellipse, rgba(0,212,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-tag {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 12px;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s forwards;
}

.hero-content h1 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  opacity: 0;
  animation: fadeUp 0.6s 0.35s forwards;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-family: var(--mono);
  opacity: 0;
  animation: fadeUp 0.6s 0.5s forwards;
}

.hero-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 460px;
  margin-bottom: 36px;
  opacity: 0;
  animation: fadeUp 0.6s 0.65s forwards;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s 0.8s forwards;
}

/* CODE WINDOW */
.hero-visual {
  flex: 1;
  max-width: 480px;
  opacity: 0;
  animation: fadeIn 0.8s 1s forwards;
}

.code-window {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(108,99,255,0.1);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
}
.window-bar .dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.window-bar .dot.red    { background: #ff5f57; }
.window-bar .dot.yellow { background: #febc2e; }
.window-bar .dot.green  { background: #28c840; }
.filename {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 8px;
}

.code-body {
  padding: 20px;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--text);
  min-height: 240px;
}
#typed-code .kw  { color: #c792ea; }
#typed-code .fn  { color: #82aaff; }
#typed-code .str { color: #c3e88d; }
#typed-code .num { color: #f78c6c; }
#typed-code .cm  { color: #546e7a; }
#typed-code .tp  { color: var(--accent2); }

/* SCROLL HINT */
.scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
}
.scroll-hint span {
  display: block;
  width: 22px;
  height: 36px;
  border: 2px solid var(--border);
  border-radius: 12px;
  position: relative;
}
.scroll-hint span::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollDot 1.5s infinite;
}
@keyframes scrollDot {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(14px); }
}

/* ============================================
   ABOUT
   ============================================ */
#about {
  padding: 120px 0;
  background: var(--bg2);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 80px;
  align-items: center;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 18px;
  font-size: 1rem;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 36px;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-plus {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  display: inline;
  margin-left: 2px;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--mono);
  margin-top: 4px;
}

.avatar-wrapper {
  position: relative;
  width: 240px;
  height: 240px;
  margin: 0 auto;
}
.avatar-placeholder {
  width: 200px;
  height: 200px;
  background: var(--bg3);
  border: 2px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  overflow: hidden;
}
.avatar-placeholder svg {
  width: 120px;
  height: 120px;
  opacity: 0.5;
}
.avatar-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px dashed rgba(108,99,255,0.3);
  animation: spin 20s linear infinite;
}
.avatar-ring.ring2 {
  inset: -20px;
  border-color: rgba(0,212,255,0.15);
  animation-direction: reverse;
  animation-duration: 30s;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   SKILLS
   ============================================ */
#skills {
  padding: 120px 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.skill-category {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s;
}
.skill-category:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.skill-category h3 {
  font-size: 0.85rem;
  font-family: var(--mono);
  color: var(--accent);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.skill-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.skill-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
}
.skill-item:hover { color: var(--text); }
.skill-icon {
  color: var(--accent);
  font-size: 0.65rem;
  flex-shrink: 0;
}

/* ============================================
   PROJECTS
   ============================================ */
#projects {
  padding: 120px 0;
  background: var(--bg2);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(108,99,255,0.15);
}
.project-card.featured {
  grid-column: span 3;
  flex-direction: row;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  background: linear-gradient(135deg, rgba(108,99,255,0.07), rgba(0,212,255,0.04));
}
.project-card.featured h3 { font-size: 1.3rem; }

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
}
.project-icon svg {
  width: 36px;
  height: 36px;
  stroke: var(--accent);
}
.project-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(108,99,255,0.1);
  color: var(--accent);
  transition: background 0.2s;
}
.project-links a:hover { background: rgba(108,99,255,0.25); }
.project-links svg { width: 16px; height: 16px; }

.project-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
}
.project-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  flex: 1;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-tags span {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: rgba(108,99,255,0.1);
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid rgba(108,99,255,0.2);
}

/* ============================================
   CONTACT
   ============================================ */
#contact {
  padding: 120px 0;
}

.contact-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 36px;
  max-width: 680px;
}
.contact-text h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.contact-text p {
  color: var(--text-muted);
  margin-bottom: 32px;
}
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s;
}
.contact-item:hover { color: var(--accent); }
.contact-item svg { width: 20px; height: 20px; flex-shrink: 0; }

.contact-btn { margin-top: 8px; }

/* ============================================
   FOOTER
   ============================================ */
footer {
  padding: 32px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
footer p { font-size: 0.85rem; color: var(--text-muted); }
footer .footer-sub { font-size: 0.75rem; font-family: var(--mono); margin-top: 6px; opacity: 0.5; }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  #hero {
    flex-direction: column;
    text-align: center;
    padding-top: calc(var(--nav-h) + 40px);
    padding-bottom: 80px;
    gap: 40px;
  }
  .hero-content { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-visual { max-width: 100%; width: 100%; }
  .hero-desc { margin: 0 auto 36px; }

  .about-grid { grid-template-columns: 1fr; }
  .about-image { display: none; }

  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; }

  .scroll-hint { display: none; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(10,14,23,0.97);
    backdrop-filter: blur(12px);
    padding: 24px;
    gap: 24px;
    border-bottom: 1px solid var(--border);
  }
  .menu-toggle { display: flex; }

  .about-stats { gap: 20px; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 420px) {
  .skills-grid { grid-template-columns: 1fr; }
}