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

:root {
  --bg: #0a0a0a;
  --bg2: #111111;
  --bg3: #1a1a1a;
  --border: #222222;
  --text: #e8e8e8;
  --text-muted: #888888;
  --text-dim: #555555;
  --accent: #7c6af7;
  --accent-light: #9b8cf9;
  --accent-glow: rgba(124, 106, 247, 0.15);
  --green: #4ade80;
  --orange: #fb923c;
  --blue: #60a5fa;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
  padding: 1.25rem 0;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  border-color: var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color 0.2s;
  letter-spacing: 0.02em;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 8rem 0 4rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: -200px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(124,106,247,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-name {
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.hero-sub {
  font-size: 1.5rem;
  color: var(--text-muted);
  font-weight: 300;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-social {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.hero-social a {
  color: var(--text-dim);
  transition: color 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
}

.hero-social a:hover { color: var(--text); transform: translateY(-2px); }
.hero-social svg { width: 1.25rem; height: 1.25rem; }

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.hero-scroll span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 3rem;
  background: linear-gradient(to bottom, var(--text-dim), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-family: 'Inter', sans-serif;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(124,106,247,0.3);
}

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

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-dim);
  transform: translateY(-1px);
}

/* ===== SECTIONS ===== */
.section {
  padding: 7rem 0;
}

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 3rem;
}

/* ===== ABOUT ===== */
.about { background: var(--bg2); }

.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 5rem;
  align-items: start;
}

.about-photo-wrap {
  position: sticky;
  top: 6rem;
}

.about-photo {
  width: 100%;
  border-radius: 16px;
  filter: grayscale(20%);
  border: 1px solid var(--border);
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.about h2 { margin-bottom: 1.5rem; }

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.05rem;
  line-height: 1.75;
}

.tag-group { margin-bottom: 1.75rem; }

.tag-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

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

.tags span {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  transition: border-color 0.2s, color 0.2s;
}

.tags span:hover {
  border-color: var(--accent);
  color: var(--text);
}

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

.project-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(124,106,247,0.1);
}

.project-coming {
  cursor: default;
  opacity: 0.6;
}

.project-coming:hover {
  border-color: var(--border);
  transform: none;
  box-shadow: none;
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-lang {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}

.project-lang.swift { background: rgba(251,146,60,0.1); color: var(--orange); }
.project-lang.python { background: rgba(96,165,250,0.1); color: var(--blue); }
.project-lang.more { background: rgba(74,222,128,0.1); color: var(--green); }

.project-arrow {
  width: 1.1rem;
  height: 1.1rem;
  color: var(--text-dim);
  transition: color 0.2s, transform 0.2s;
}

.project-card:hover .project-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

.project-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.project-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  flex: 1;
}

.project-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.project-footer span {
  font-size: 0.72rem;
  color: var(--text-dim);
  background: var(--bg3);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.05em;
}

/* ===== CONTACT ===== */
.contact { background: var(--bg2); }

.contact-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: -2rem;
  margin-bottom: 3rem;
}

.contact-form {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.875rem 1rem;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: none;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }

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

.form-note {
  font-size: 0.85rem;
  color: var(--green);
  min-height: 1.2rem;
}

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

.footer p {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-photo-wrap { position: static; }
  .about-photo { max-width: 200px; margin: 0 auto; display: block; }
  .form-row { grid-template-columns: 1fr; }
  .nav-links { gap: 1.5rem; }
  .hero-name { font-size: clamp(2.5rem, 12vw, 4rem); }
  .section { padding: 5rem 0; }
}

@media (max-width: 480px) {
  .nav-links { display: none; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}