/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; }

/* ---------- Custom scrollbar ---------- */
html { scrollbar-color: #5b46c8 #11141b; scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #11141b; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #7c5cff, #22d3ee);
  border-radius: 10px;
  border: 2px solid #11141b;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #8c70ff, #46e0ff);
}

/* ---------- Scroll progress bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #7c5cff, #22d3ee);
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 100;
  pointer-events: none;
  will-change: transform;
}
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

:root {
  --bg: #0b0d12;
  --bg-alt: #11141b;
  --surface: #161a23;
  --border: #232836;
  --text: #e6e9ef;
  --muted: #9aa3b2;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --accent-soft: rgba(124, 92, 255, 0.15);
  --max: 1140px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 18, 0.75);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-mark {
  display: block;
  width: 52px;
  height: 52px;
  object-fit: contain;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}
.brand:hover .brand-mark { transform: rotate(-3deg) scale(1.04); }
.brand-text { font-size: 1.05rem; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  padding: 0;
}
.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--text) !important;
  border: 1px solid rgba(124, 92, 255, 0.35);
}
.nav-cta:hover { background: rgba(124, 92, 255, 0.25); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.97rem;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5b8bff);
  color: white;
  box-shadow: 0 10px 30px -10px rgba(124, 92, 255, 0.6);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 36px -10px rgba(124, 92, 255, 0.8); }
.btn-ghost {
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--muted); }
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -20% -10% auto auto;
  width: 60vw;
  height: 60vw;
  max-width: 700px;
  max-height: 700px;
  background: radial-gradient(circle at center, rgba(124, 92, 255, 0.25), transparent 60%);
  pointer-events: none;
  filter: blur(20px);
  z-index: 0;
}
.hero-waves {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.07);
}
.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.8rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 800;
  background: linear-gradient(180deg, #ffffff 30%, #a9b0c0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  min-height: 1.1em; /* reserve space so the line doesn't reflow while typing */
}
.hero h1 .caret {
  display: inline-block;
  color: #fff;
  -webkit-text-fill-color: #fff;
  font-weight: 300;
  margin-left: 0.06em;
  transform: translateY(-0.05em);
  animation: caret-blink 0.9s steps(2) infinite;
}
@keyframes caret-blink {
  50% { opacity: 0; }
}
.lede {
  margin-top: 1.25rem;
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 520px;
}
.hero-cta {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.hero-meta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin-top: 2.75rem;
}
.hero-meta li { display: flex; flex-direction: column; }
.hero-meta strong {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.hero-meta span {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Terminal */
.terminal {
  background: #0f1117;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  background: #1a1d26;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.terminal-bar span {
  width: 11px; height: 11px; border-radius: 50%;
  background: #3a3f4d;
}
.terminal-bar span:nth-child(1) { background: #ff5f56; }
.terminal-bar span:nth-child(2) { background: #ffbd2e; }
.terminal-bar span:nth-child(3) { background: #27c93f; }
.terminal-bar p {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--muted);
  pointer-events: none;
}
.terminal-body {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  line-height: 1.7;
  padding: 1.4rem 1.5rem;
  color: #cdd3e1;
  white-space: pre-wrap;
}
.t-prompt { color: var(--accent-2); }
.t-cmd { color: #fff; }
.cursor {
  display: inline-block;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Sections ---------- */
.section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }

/* Big translucent section-number watermark */
.section[data-section-num] {
  position: relative;
  overflow: hidden;
}
.section[data-section-num]::before {
  content: attr(data-section-num);
  position: absolute;
  top: clamp(1rem, 3vw, 2.5rem);
  right: clamp(-1rem, -0.5vw, 0rem);
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(7rem, 18vw, 14rem);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: rgba(255, 255, 255, 0.035);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.section[data-section-num] > .container {
  position: relative;
  z-index: 1;
}
.section-label {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-2);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.section h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-weight: 700;
}
.section-head { max-width: 720px; margin-bottom: 3rem; }
.section-sub { margin-top: 0.75rem; color: var(--muted); font-size: 1.05rem; }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.about-copy p + p { margin-top: 1rem; }
.about-copy p { color: var(--muted); }
.about-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  position: relative;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 40%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.9rem 1.75rem;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 92, 255, 0.55), rgba(34, 211, 238, 0.45), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 92, 255, 0.45);
  box-shadow: 0 18px 40px -20px rgba(124, 92, 255, 0.45);
}
.card:hover::before { opacity: 1; }

.card-icon {
  position: relative;
  width: 52px;
  height: 52px;
  margin-bottom: 1.4rem;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(124, 92, 255, 0.22), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(124, 92, 255, 0.32);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 8px 20px -10px rgba(124, 92, 255, 0.5);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.card-icon::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent 55%);
  pointer-events: none;
}
.card-icon svg {
  width: 26px;
  height: 26px;
  position: relative;
  z-index: 1;
}
.card:hover .card-icon {
  transform: translateY(-2px);
  border-color: rgba(124, 92, 255, 0.6);
}

.card h3 {
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
.card > p { color: var(--muted); }
.card-list {
  list-style: none;
  padding: 1rem 0 0;
  margin-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.93rem;
}
.card-list li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.45rem;
}
.card-list li:last-child { margin-bottom: 0; }
.card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  transform: rotate(45deg);
}

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.5rem;
}
.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.project:hover { transform: translateY(-3px); border-color: rgba(124, 92, 255, 0.4); }
.project-thumb {
  aspect-ratio: 16/9;
  background: var(--g, linear-gradient(135deg, #6366f1, #06b6d4));
  display: grid;
  place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.4rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: -0.02em;
}
.project-body { padding: 1.5rem; }
.project-tags {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--accent-2);
  margin-bottom: 0.5rem;
}
.project-body h3 {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
.project-body p { color: var(--muted); }
.link-arrow {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--accent-2);
  font-weight: 500;
}
.link-arrow:hover { color: var(--text); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}
.contact-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.contact-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  align-self: center;
}
.contact-list a { color: var(--accent-2); }
.contact-list a:hover { color: var(--text); }

/* Form */
.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: grid;
  gap: 1rem;
}
.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.contact-form textarea { resize: vertical; min-height: 110px; }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-note { font-size: 0.9rem; color: var(--muted); min-height: 1.2em; }
.form-note.success { color: #34d399; }
.form-note.error { color: #f87171; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-left { display: grid; gap: 0.25rem; }
.footer-meta { font-size: 0.85rem; opacity: 0.7; }

.social-links {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 0.5rem;
}
.social-links a {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.social-links a:hover {
  color: #fff;
  border-color: rgba(124, 92, 255, 0.5);
  box-shadow: 0 8px 18px -10px rgba(124, 92, 255, 0.7);
  transform: translateY(-2px);
}
.social-links svg { width: 18px; height: 18px; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual { order: -1; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    inset: 100% 1rem auto auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 0.75rem;
    min-width: 200px;
    box-shadow: var(--shadow);
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 0.6rem 0.75rem; width: 100%; }
}

@media (max-width: 520px) {
  .hero-meta { gap: 1.25rem; }
  .contact-list li { grid-template-columns: 1fr; gap: 0.25rem; }
  .contact-label { font-size: 0.72rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}