/* ============ THEME TOKENS ============ */
:root {
  --bg: #16121a;
  --bg-soft: #1c1721;
  --card: #211b26;
  --border: #342b3a;
  --text: #f2ecf1;
  --muted: #b0a4b0;
  --accent: #e2a6c3;
  --accent-strong: #d48daf;
  --accent-ink: #2a1320;
  --accent-soft: rgba(226, 166, 195, 0.12);
  --code-key: #c9b8e8;
  --code-str: #e8c9a0;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --maxw: 1100px;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #faf8f6;
  --bg-soft: #f4eff1;
  --card: #ffffff;
  --border: #e9e1e5;
  --text: #251b26;
  --muted: #625866;
  --accent: #8e3b62;
  --accent-strong: #742f50;
  --accent-ink: #ffffff;
  --accent-soft: rgba(142, 59, 98, 0.07);
  --code-key: #6b4fa0;
  --code-str: #8a5a1f;
  --shadow: 0 12px 32px rgba(37, 27, 38, 0.07);
  color-scheme: light;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #faf8f6;
    --bg-soft: #f4eff1;
    --card: #ffffff;
    --border: #e9e1e5;
    --text: #251b26;
    --muted: #625866;
    --accent: #8e3b62;
    --accent-strong: #742f50;
    --accent-ink: #ffffff;
    --accent-soft: rgba(142, 59, 98, 0.07);
    --code-key: #6b4fa0;
    --code-str: #8a5a1f;
    --shadow: 0 12px 32px rgba(37, 27, 38, 0.07);
  color-scheme: light;
  }
}

/* ============ BASE ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--bg); }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
}
a { color: inherit; text-decoration: none; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
svg.fill { fill: currentColor; stroke: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
.mono { font-family: "JetBrains Mono", ui-monospace, monospace; }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.hidden { display: none; }

/* ============ ACCESSIBILITY ============ */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--accent-ink); padding: 10px 16px;
  border-radius: 8px; font-weight: 600; transition: top 0.2s;
}
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.form input:focus-visible, .form textarea:focus-visible { outline: none; }
main:focus { outline: none; }
.req { color: var(--accent); }
a:not(.btn):not(.logo):not(.icon-btn) { text-underline-offset: 3px; }
strong { font-weight: 600; }

/* ============ NAV ============ */
.nav {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.logo-mark {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px;
  background: var(--accent); color: var(--accent-ink);
  font-family: "JetBrains Mono", monospace; font-size: 14px;
}
.logo-text { font-family: "JetBrains Mono", monospace; font-size: 15px; }
.nav-links { display: flex; gap: 28px; font-size: 15px; }
.nav-links a { color: var(--muted); transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.nav-actions { display: flex; gap: 8px; }
.icon-btn {
  display: grid; place-items: center; width: 38px; height: 38px;
  background: transparent; border: 1px solid var(--border); border-radius: 10px;
  color: var(--text); cursor: pointer; transition: border-color 0.2s, color 0.2s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.i-moon { display: none; }
:root[data-theme="light"] .i-sun { display: none; }
:root[data-theme="light"] .i-moon { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .i-sun { display: none; }
  :root:not([data-theme="dark"]) .i-moon { display: block; }
}
.menu-btn { display: none; }

/* ============ HERO ============ */
.hero { padding: 80px 0 40px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -200px -200px auto auto; width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-soft), transparent 65%); pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; position: relative; }
.badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent); font-size: 13px; font-weight: 500; margin-bottom: 22px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }
h1 { font-size: clamp(2.4rem, 6vw, 3.8rem); line-height: 1.08; letter-spacing: -0.03em; font-weight: 800; }
.role { font-size: clamp(0.95rem, 2vw, 1.1rem); color: var(--accent); margin: 12px 0 20px; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 24px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 10px;
  font-weight: 600; font-size: 15px; border: 1px solid transparent; cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s; font-family: inherit;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-strong); }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.socials { display: flex; gap: 10px; }
.socials a {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 10px;
  border: 1px solid var(--border); color: var(--muted); transition: all 0.2s;
}
.socials a:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }

/* Terminal */
.terminal { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.term-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: var(--bg-soft); }
.term-bar span { width: 11px; height: 11px; border-radius: 50%; background: #ef4444; }
.term-bar span:nth-child(2) { background: #f59e0b; }
.term-bar span:nth-child(3) { background: #22c55e; }
.term-bar p { margin-left: 10px; font-size: 12px; color: var(--muted); }
.term-body { padding: 20px; font-size: 13.5px; line-height: 1.7; overflow-x: auto; color: var(--text); }
.c-k { color: var(--code-key); }
.c-s { color: var(--code-str); }
.c-o { color: var(--accent); }
.cursor { animation: pulse 1s steps(2) infinite; color: var(--accent); }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 64px; }
.stat { padding: 20px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.stat strong { display: block; font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; color: var(--accent); }
.stat span { font-size: 13.5px; color: var(--muted); line-height: 1.45; display: block; margin-top: 4px; }

/* ============ SECTIONS ============ */
.section { padding: 90px 0; }
.section-title { font-size: clamp(1.6rem, 3.5vw, 2.1rem); letter-spacing: -0.02em; margin-bottom: 40px; display: flex; align-items: baseline; gap: 12px; }
.section-title .mono { font-size: 0.65em; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s; }
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); box-shadow: var(--shadow); }

/* About */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; }
.about-grid p { margin-bottom: 16px; color: var(--muted); }
.about-grid p strong, .about-grid p em { color: var(--text); }
.looking { padding: 14px 18px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 10px 10px 0; }
.facts { list-style: none; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); height: fit-content; }
.facts li { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 2px; font-size: 15px; }
.facts li:last-child { border-bottom: none; }
.facts .mono { font-size: 12px; }

/* Timeline */
.timeline { display: flex; flex-direction: column; gap: 28px; position: relative; }
.t-item { display: grid; grid-template-columns: 190px 1fr; gap: 28px; }
.t-meta { display: flex; flex-direction: column; font-size: 13px; padding-top: 30px; gap: 4px; }
.t-meta span:first-child { color: var(--accent); font-weight: 600; }
.kicker { font-size: 12.5px; color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 6px; }
.card h3 { font-size: 1.25rem; line-height: 1.35; margin-bottom: 12px; letter-spacing: -0.01em; }
.card > p { color: var(--muted); }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 20px 0; }
.metrics div { padding: 14px; border-radius: 10px; background: var(--bg-soft); border: 1px solid var(--border); }
.metrics strong { display: block; font-size: 1.35rem; color: var(--accent); font-weight: 700; }
.metrics span { font-size: 12.5px; color: var(--muted); line-height: 1.4; display: block; }
.bullets { list-style: none; display: flex; flex-direction: column; gap: 8px; margin: 14px 0 18px; }
.bullets li { padding-left: 22px; position: relative; color: var(--muted); font-size: 15px; }
.bullets li::before { content: "▹"; position: absolute; left: 0; color: var(--accent); }
.bullets strong, .bullets em { color: var(--text); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span {
  font-family: "JetBrains Mono", monospace; font-size: 12px; padding: 4px 10px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent);
}

/* Projects */
.projects { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.project h3 { font-size: 1.15rem; }
.project { display: flex; flex-direction: column; }
.project:hover { transform: translateY(-4px); }
.p-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; font-size: 13px; }
.p-icon { width: 38px; height: 38px; color: var(--accent); stroke-width: 1.6; }
.p-sub { margin-bottom: 16px; }
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 11.5px; padding: 12px; background: var(--bg-soft); border: 1px dashed var(--border); border-radius: 10px; }
.flow span { padding: 3px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--card); }
.flow i { color: var(--accent); font-style: normal; }
.project .tags { margin-top: auto; }
.p-links { display: flex; gap: 18px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); font-weight: 600; font-size: 14px; }
.p-links a { color: var(--accent); }
.p-links a:hover { text-decoration: underline; }
.p-links .disabled { color: var(--muted); font-weight: 500; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.skill-group h3 { font-size: 1.05rem; margin-bottom: 14px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 56px; }
.sub-title { font-size: 1.15rem; margin-bottom: 16px; }
.list { list-style: none; }
.list li { padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 15px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-title { font-size: 1.6rem; letter-spacing: -0.02em; margin-bottom: 14px; line-height: 1.25; }
.contact-grid > div > p { color: var(--muted); margin-bottom: 24px; }
.contact-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.contact-list li { display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; }
.contact-list .mono { width: 72px; font-size: 12.5px; }
.contact-list a { color: var(--accent); word-break: break-all; text-decoration: underline; text-decoration-thickness: 1px; }
.contact-list a:hover { text-decoration: underline; }
.form { display: flex; flex-direction: column; gap: 16px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; font-weight: 500; }
.form input, .form textarea {
  font-family: inherit; font-size: 15px; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg-soft); color: var(--text); resize: vertical;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form .btn { justify-content: center; }
.form-status { font-size: 14px; min-height: 1.2em; color: var(--muted); }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 28px 0; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer a:hover { color: var(--accent); }

/* Reveal on scroll */
/* sections are always visible; no scroll-triggered hiding */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .btn:hover, .project:hover, .socials a:hover { transform: none; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .hero-grid, .about-grid, .contact-grid, .two-col { grid-template-columns: 1fr; gap: 36px; }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: 44px; }
  .projects, .skills { grid-template-columns: 1fr; }
  .projects { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
  .t-item { grid-template-columns: 1fr; gap: 10px; }
  .t-meta { flex-direction: row; gap: 12px; padding-top: 0; }
}
@media (max-width: 720px) {
  .menu-btn { display: grid; }
  .nav-links {
    position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; visibility: hidden;
    transition: max-height 0.3s ease, visibility 0s linear 0.3s;
  }
  .nav-links.open { max-height: 320px; visibility: visible; transition: max-height 0.3s ease; }
  .nav-links a { padding: 14px 20px; border-top: 1px solid var(--border); }
  .hero { padding-top: 48px; }
  .section { padding: 64px 0; }
  .metrics { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .term-body { font-size: 12px; }
}

/* ============ PROJECT CARDS (home) ============ */
.section-intro { color: var(--muted); margin: -24px 0 32px; }
.p-grid { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.p-card {
  display: flex; flex-direction: column; height: 100%;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.p-card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); box-shadow: var(--shadow); }
.p-card:focus-visible { outline-offset: 4px; border-radius: var(--radius); }
.p-thumb { display: block; aspect-ratio: 16 / 9; overflow: hidden; border-bottom: 1px solid var(--border); background: #1c1721; }
.p-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s; }
.p-card:hover .p-thumb img { transform: scale(1.04); }
.p-body { display: flex; flex-direction: column; gap: 10px; padding: 20px 22px 22px; flex: 1; }
.p-meta { font-size: 12px; color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; }
.p-title { font-size: 1.12rem; font-weight: 700; line-height: 1.3; letter-spacing: -0.01em; text-wrap: balance; }
.p-tagline { color: var(--muted); font-size: 14.5px; line-height: 1.55; }
.p-body .tags { margin-top: 4px; }
.p-more { margin-top: auto; padding-top: 12px; font-weight: 600; font-size: 14px; color: var(--accent); }
.p-card:hover .p-more span { display: inline-block; transform: translateX(4px); transition: transform 0.2s; }
@media (max-width: 900px) { .p-grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); } }

/* ============ PROJECT DETAIL PAGE ============ */
.crumb { display: inline-flex; gap: 8px; align-items: center; color: var(--muted); font-size: 14px; margin-bottom: 26px; }
.crumb:hover { color: var(--accent); }
.d-hero { padding: 56px 0 28px; }
.d-hero h1 { font-size: clamp(2rem, 5vw, 3rem); text-wrap: balance; }
.d-hero .lead { margin-top: 14px; }
.d-hero .tags { margin-top: 20px; }
.d-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.btn-off { border-color: var(--border); color: var(--muted); cursor: default; }
.btn-off:hover { transform: none; }
.d-cover { margin: 20px 0 8px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: #1c1721; }
.d-cover img { display: block; width: 100%; height: auto; }
.d-caption { font-size: 13px; color: var(--muted); }
.d-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; padding: 48px 0 24px; }
.d-main { display: flex; flex-direction: column; gap: 44px; min-width: 0; }
.d-main h2 { font-size: 1.45rem; letter-spacing: -0.02em; margin-bottom: 14px; }
.d-main p { color: var(--muted); max-width: 65ch; }
.d-main p + p { margin-top: 12px; }
.d-main strong, .d-main em { color: var(--text); }
.steps { list-style: none; counter-reset: step; display: flex; flex-direction: column; gap: 14px; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--card); }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); font-family: "JetBrains Mono", monospace; font-weight: 600; }
.steps h3 { font-size: 1rem; margin-bottom: 4px; }
.steps p { font-size: 15px; }
.d-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.d-metrics div { padding: 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--card); }
.d-metrics strong { display: block; font-size: 1.6rem; color: var(--accent); font-weight: 800; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.d-metrics span { font-size: 13.5px; color: var(--muted); }
.d-side { display: flex; flex-direction: column; gap: 16px; height: fit-content; position: sticky; top: calc(84px + env(safe-area-inset-top, 0px)); }
.d-box { border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); padding: 20px; }
.d-box h2 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); font-family: "JetBrains Mono", monospace; font-weight: 600; margin-bottom: 12px; }
.d-box dl { display: grid; gap: 12px; }
.d-box dt { font-size: 12.5px; color: var(--muted); }
.d-box dd { font-size: 15px; font-weight: 500; }
.d-next { border-top: 1px solid var(--border); margin-top: 32px; padding: 32px 0 64px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.d-next a { display: flex; flex-direction: column; gap: 4px; padding: 18px 22px; border: 1px solid var(--border); border-radius: 12px; background: var(--card); min-width: 0; flex: 1 1 260px; transition: border-color 0.2s; }
.d-next a:hover { border-color: var(--accent); }
.d-next a.next { text-align: right; }
.d-next small { color: var(--muted); font-size: 13px; }
.d-next span { font-weight: 600; color: var(--accent); }
@media (max-width: 900px) {
  .d-layout { grid-template-columns: 1fr; gap: 32px; }
  .d-side { position: static; }
}
@media (max-width: 720px) { .steps li { grid-template-columns: 1fr; gap: 10px; } }