/* ============ THEME TOKENS ============ */
/* Light (default): white, gray, blue */
:root {
  --bg: #ffffff;
  --bg-elev: #f5f7fa;
  --border: #e2e6ec;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-2: #0ea5e9;
  --radius: 14px;
  --maxw: 1000px;
  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

/* Dark: slate gray and blue */
[data-theme="dark"] {
  --bg: #0f172a;
  --bg-elev: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --accent-2: #38bdf8;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); color: var(--accent); }
.accent { color: var(--accent); }

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

::selection { background: var(--accent); color: #fff; }

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  border-color: var(--border);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav__logo { font-family: var(--mono); font-weight: 500; font-size: 1.15rem; color: var(--muted); }
.nav__logo span { color: var(--text); }
.nav__links { display: flex; gap: 32px; }
.nav__links a { font-size: 0.92rem; color: var(--muted); position: relative; transition: color 0.2s; }
.nav__links a:hover, .nav__links a.is-active { color: var(--text); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -4px;
  width: 0; height: 2px; background: var(--accent); transition: width 0.25s;
}
.nav__links a:hover::after, .nav__links a.is-active::after { width: 100%; }
.nav__actions { display: flex; gap: 8px; }

.icon-btn {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
}
.icon-btn:hover { border-color: var(--accent); }
[data-theme="dark"] .icon-moon,
[data-theme="light"] .icon-sun { display: none; }

.nav__burger { display: none; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav__burger span { display: block; width: 16px; height: 2px; background: currentColor; transition: transform 0.25s; }
.nav__burger[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* ============ HERO ============ */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: 68px;
}
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  align-self: flex-start;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elev);
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 28px;
}
.badge__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}
.hero__title { font-size: clamp(2.4rem, 6vw, 4.2rem); line-height: 1.1; font-weight: 700; letter-spacing: -0.03em; }
.hero__role { font-family: var(--mono); font-size: clamp(1rem, 2.4vw, 1.35rem); color: var(--muted); margin: 18px 0 8px; min-height: 1.7em; }
.cursor { color: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero__lead { max-width: 540px; color: var(--muted); font-size: 1.08rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 34px 0 30px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px;
  border-radius: 10px;
  font: 600 0.92rem var(--font);
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { box-shadow: 0 8px 24px -8px var(--accent); }
.btn--ghost { border-color: var(--border); background: var(--bg-elev); }
.btn--ghost:hover { border-color: var(--accent); }

.socials { display: flex; flex-wrap: wrap; gap: 10px; }
.social-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-elev);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.social-btn svg { color: var(--accent); transition: color 0.2s; }
.social-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -10px var(--accent);
}
.social-btn:hover svg { color: #fff; }
.contact__socials { margin-bottom: 28px; }

/* ============ SECTIONS ============ */
.section { padding: 110px 24px 20px; }
.section__title {
  display: flex; align-items: center; gap: 12px;
  font-size: clamp(1.6rem, 3.5vw, 2rem);
  letter-spacing: -0.02em;
  margin-bottom: 36px;
}
.section__title .mono { font-size: 0.7em; font-weight: 400; }
.section__title::after { content: ""; flex: 1; max-width: 260px; height: 1px; background: var(--border); }
.subhead { font-size: 1rem; margin: 48px 0 16px; color: var(--muted); font-weight: 500; }
#education { margin-top: 72px; }
#education .mono { visibility: hidden; }

/* ============ ABOUT ============ */
.about { display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px; align-items: start; }
.about__text p { color: var(--muted); margin-bottom: 16px; }
.about__text strong { color: var(--text); font-weight: 600; }
.about__photo img,
.photo-placeholder {
  width: 100%; aspect-ratio: 1; border-radius: var(--radius);
  border: 1px solid var(--border);
  object-fit: cover;
}
.photo-placeholder {
  display: flex; align-items: center; justify-content: center;
  font: 500 3.4rem var(--mono);
  color: var(--muted);
  background: var(--bg-elev);
}
.photo-placeholder span { color: var(--text); }

.skills { display: flex; flex-wrap: wrap; gap: 10px; }
.skills li {
  padding: 8px 16px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  border-radius: 999px;
  font-size: 0.88rem;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.skills li:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ============ TIMELINE ============ */
.timeline { position: relative; padding-left: 28px; border-left: 1px solid var(--border); }
.timeline__item { position: relative; padding-bottom: 36px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: ""; position: absolute; left: -34px; top: 8px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
}
.timeline__date { font: 0.8rem var(--mono); color: var(--muted); }
.timeline__item h3 { font-size: 1.1rem; margin: 2px 0 6px; }
.timeline__item p { color: var(--muted); max-width: 620px; }
.timeline__points { max-width: 680px; margin-top: 6px; }
.timeline__points li { position: relative; padding-left: 18px; color: var(--muted); margin-bottom: 4px; }
.timeline__points li::before { content: "▹"; position: absolute; left: 0; color: var(--accent); }

/* ============ PROJECTS ============ */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter {
  padding: 7px 16px; border-radius: 999px;
  border: 1px solid var(--border); background: transparent; color: var(--muted);
  font: 500 0.85rem var(--font); cursor: pointer; transition: all 0.2s;
}
.filter:hover { color: var(--text); }
.filter.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--accent) 60%, var(--border));
  box-shadow: 0 20px 40px -20px color-mix(in srgb, var(--accent) 50%, transparent);
}
.card.is-hidden { display: none; }
.card__thumb {
  aspect-ratio: 16 / 9;
  display: grid; place-items: center;
  background: linear-gradient(135deg, hsl(var(--hue) 70% 55%), hsl(calc(var(--hue) + 15) 75% 38%));
  font: 600 1.2rem var(--mono);
  color: rgba(255, 255, 255, 0.9);
  overflow: hidden;
}
.card__thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform 0.5s; }
.card__thumb:has(img) { border-bottom: 1px solid var(--border); }
.card:hover .card__thumb img { transform: scale(1.05); }
.card__body { padding: 22px; }
.card__label { display: block; font: 0.75rem var(--mono); color: var(--accent-2); margin-bottom: 4px; }
.card__body h3 { font-size: 1.15rem; margin-bottom: 6px; }
.card__body p { color: var(--muted); font-size: 0.94rem; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0; }
.tags li {
  font: 0.75rem var(--mono);
  padding: 3px 10px; border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
}
.card__links { display: flex; gap: 18px; font-size: 0.9rem; font-weight: 500; }
.card__links a { color: var(--muted); transition: color 0.2s; }
.card__links a:hover { color: var(--accent); }

/* ============ CONTACT ============ */
.contact { padding-bottom: 100px; }
.contact__lead { color: var(--muted); max-width: 540px; margin-bottom: 28px; }
.contact__form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 640px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 0.85rem; color: var(--muted); }
.field input, .field textarea {
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font: inherit;
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}
.contact__form .btn { justify-self: start; }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-note { grid-column: 1 / -1; font-size: 0.88rem; color: var(--accent-2); min-height: 1.4em; }

/* ============ FOOTER ============ */
.footer { border-top: 1px solid var(--border); padding: 28px 0; font-size: 0.85rem; color: var(--muted); }
.footer__inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ============ SCROLL REVEAL ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 760px) {
  .container { padding: 0 16px; }
  .section { padding: 90px 16px 10px; }
  .nav__burger { display: flex; }
  .nav__links {
    position: fixed; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav__links.is-open { max-height: 320px; }
  .nav__links a { padding: 16px 20px; border-top: 1px solid var(--border); }
  .nav__links a::after { display: none; }

  .about { grid-template-columns: 1fr; }
  .about__photo { max-width: 220px; grid-row: 1; }
  .projects { grid-template-columns: 1fr; }
  .contact__form { grid-template-columns: 1fr; }
}

/* ============ HONEY GOURAMI ============ */
/* Swims behind the page content (same layer as the background glow) */
.gourami {
  position: fixed; top: 0; left: 0;
  width: 120px; height: 77px;
  z-index: -1;
  pointer-events: none;
  will-change: transform;
}
.gourami__fish { width: 100%; height: 100%; overflow: visible; transition: transform 0.6s ease; }
.gourami.is-left .gourami__fish { transform: scaleX(-1); }
.gourami.is-spinning .gourami__fish { animation: gourami-spin 0.7s ease; }
.gourami.is-left.is-spinning .gourami__fish { animation-name: gourami-spin-left; }

.gourami__tail { transform-origin: 48px 55px; animation: gourami-tail 1.1s ease-in-out infinite alternate; }
.gourami__pec { transform-origin: 138px 64px; animation: gourami-pec 0.5s ease-in-out infinite alternate; }
.gourami__feelers { transform-origin: 148px 79px; animation: gourami-feelers 2.4s ease-in-out infinite alternate; }

@keyframes gourami-tail { from { transform: rotate(-9deg); } to { transform: rotate(9deg); } }
@keyframes gourami-pec { from { transform: rotate(-12deg); } to { transform: rotate(14deg); } }
@keyframes gourami-feelers { from { transform: rotate(-6deg); } to { transform: rotate(5deg); } }
@keyframes gourami-spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }
@keyframes gourami-spin-left { from { transform: scaleX(-1) rotate(0); } to { transform: scaleX(-1) rotate(-360deg); } }

.gourami-bubble {
  position: fixed; z-index: -1; pointer-events: none;
  width: 7px; height: 7px; border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent-2) 70%, transparent);
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  animation: gourami-bubble 2.6s ease-out forwards;
}
.gourami-bubble--hi {
  width: auto; height: auto; border-radius: 999px;
  padding: 2px 9px;
  font: 500 0.75rem var(--mono); color: var(--accent);
  background: var(--bg-elev); border-color: var(--border);
  animation-duration: 2.2s;
}
@keyframes gourami-bubble {
  0% { opacity: 0; transform: translateY(0) scale(0.6); }
  15% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-46px) scale(1); }
}

@media (max-width: 760px) {
  .gourami { width: 80px; height: 51px; }
}
@media (prefers-reduced-motion: reduce) {
  .gourami__tail, .gourami__pec, .gourami__feelers { animation: none; }
}
@media print { .gourami, .gourami-bubble { display: none; } }