/* =========================================================
   AJQ / SYSTEM — design system
   Concept: an engineer's status console. Quiet dark surface,
   amber signal accent, hairline grid, telemetry-style module
   numbering, one signature waveform motif carried throughout.
   ========================================================= */

:root {
  --bg: #0a0e13;
  --surface: #10161f;
  --surface-2: #151d29;
  --border: #212b39;
  --border-soft: #1a222e;
  --text: #e8edf4;
  --text-muted: #8493a6;
  --text-dim: #56637a;
  --accent: #ffb454;      /* signal amber */
  --accent-dim: #8a6a3a;
  --accent-2: #57d9a3;    /* active / online green */
  --accent-red: #ff6b6b;  /* live / alert */
  --radius: 3px;

  --font-display: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Consolas, monospace;

  --max-w: 1120px;
  --pad: clamp(20px, 5vw, 64px);
}

/* ---------- light theme ---------- */
html[data-theme="light"] {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --surface-2: #edf0f4;
  --border: #dde3ea;
  --border-soft: #e7ebf0;
  --text: #1a2230;
  --text-muted: #55637a;
  --text-dim: #97a3b5;
  --accent: #c96f1e;
  --accent-dim: #e0b184;
  --accent-2: #1f9d69;
  --accent-red: #d1453d;
}
html[data-theme="light"] body { background-image: linear-gradient(var(--border-soft) 1px, transparent 1px), linear-gradient(90deg, var(--border-soft) 1px, transparent 1px); }
html[data-theme="light"] .btn-primary { color: #fffaf3; }
html[data-theme="light"] .statusbar,
html[data-theme="light"] .nav { background: rgba(243, 245, 248, 0.9); }
html[data-theme="light"] .stat .num { color: var(--accent); }
html[data-theme="light"] .scope { box-shadow: none; }

/* ---------- blue theme ---------- */
html[data-theme="blue"] {
  --bg: #060b14;
  --surface: #0c1420;
  --surface-2: #101c2c;
  --border: #1c2d42;
  --border-soft: #16233a;
  --text: #e7edf7;
  --text-muted: #7f93ad;
  --text-dim: #4d6280;
  --accent: #4fa8ff;      /* signal blue */
  --accent-dim: #2f6294;
  --accent-2: #4fd6c4;    /* active / online teal */
  --accent-red: #ff6b6b;
}

/* ---------- pink theme ---------- */
html[data-theme="pink"] {
  --bg: #140810;
  --surface: #1c0e18;
  --surface-2: #24121e;
  --border: #3a1e2e;
  --border-soft: #2c1622;
  --text: #f6e8f0;
  --text-muted: #b98fa5;
  --text-dim: #7a556a;
  --accent: #ff6fa8;      /* signal pink */
  --accent-dim: #a34d75;
  --accent-2: #57d99b;    /* active / online green */
  --accent-red: #ff6b6b;
}

/* ---------- reset ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center top;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.wrap { max-width: var(--max-w); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

/* ---------- top status bar ---------- */
.statusbar {
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 19, 0.85);
  backdrop-filter: blur(6px);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}
.statusbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 34px;
}
.statusbar .dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  margin-right: 6px;
  box-shadow: 0 0 0 0 rgba(87, 217, 163, 0.6);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(87, 217, 163, 0.45); }
  70% { box-shadow: 0 0 0 6px rgba(87, 217, 163, 0); }
  100% { box-shadow: 0 0 0 0 rgba(87, 217, 163, 0); }
}
.statusbar .status-left span { color: var(--accent-2); }
.statusbar .status-right { letter-spacing: 0.04em; display: flex; align-items: center; gap: 12px; }
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 12px;
  line-height: 1;
  width: 22px; height: 22px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.theme-toggle:hover { border-color: var(--accent); }

/* ---------- nav ---------- */
.nav {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 14, 19, 0.92);
  backdrop-filter: blur(8px);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand .brand-mark {
  width: 18px; height: 18px;
  display: inline-block;
}
.brand .brand-mark svg { width: 100%; height: 100%; }
.navlinks {
  display: flex;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.navlinks a {
  padding: 8px 14px;
  color: var(--text-muted);
  border-radius: var(--radius);
  transition: color 0.15s ease, background 0.15s ease;
}
.navlinks a:hover { color: var(--text); background: var(--surface-2); }
.navlinks a.active { color: var(--accent); }
.navlinks a.active::before { content: "> "; color: var(--accent-dim); }
.nav-toggle { display: none; }

@media (max-width: 720px) {
  .navlinks { display: none; }
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; background: none; border: 1px solid var(--border);
    color: var(--text); border-radius: var(--radius);
  }
  .navlinks.open {
    display: flex; flex-direction: column; position: absolute;
    top: 64px; left: 0; right: 0; background: var(--surface);
    border-bottom: 1px solid var(--border); padding: 8px;
  }
}

/* ---------- module headers (section labeling) ---------- */
.module-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.module-label::before { content: ""; width: 20px; height: 1px; background: var(--accent-dim); }
.module-label .idx { color: var(--text-dim); }

section { padding: 88px 0; border-bottom: 1px solid var(--border-soft); }
section:last-of-type { border-bottom: none; }

.section-title {
  font-size: clamp(26px, 3.6vw, 38px);
  margin-bottom: 12px;
}
.section-sub {
  color: var(--text-muted);
  max-width: 60ch;
  margin-bottom: 44px;
  font-size: 16px;
}

/* ---------- hero ---------- */
.hero { padding: 72px 0 96px; border-bottom: 1px solid var(--border-soft); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
}
.eyebrow .dot-live {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent-red);
  animation: pulse 1.8s ease-out infinite;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.hero h1 .accent { color: var(--accent); }
.hero-sub {
  margin-top: 22px;
  color: var(--text-muted);
  font-size: 18px;
  max-width: 46ch;
}
.hero-cta {
  margin-top: 34px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 12px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary { background: var(--accent); color: #14100a; border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { background: #ffc678; }
.btn-ghost { color: var(--text); }
.btn-ghost:hover { border-color: var(--accent-dim); color: var(--accent); }
.btn[disabled], .btn.disabled {
  opacity: 0.45; cursor: not-allowed; pointer-events: none;
}

.scope {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px;
  position: relative;
}
.scope-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  margin-bottom: 10px; letter-spacing: 0.06em;
}
.scope canvas { width: 100%; height: 160px; display: block; }
.scope-foot {
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  margin-top: 10px;
}
.scope-foot .accent { color: var(--accent-2); }

/* corner brackets on cards, HUD-style */
.hud {
  position: relative;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
}
.hud::before, .hud::after {
  content: "";
  position: absolute;
  width: 10px; height: 10px;
  border-color: var(--accent-dim);
  border-style: solid;
  opacity: 0.7;
}
.hud::before { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.hud::after { bottom: -1px; right: -1px; border-width: 0 1px 1px 0; }

/* ---------- grid layouts ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ---------- cards ---------- */
.card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--accent-dim); }
.card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  display: flex; align-items: center; justify-content: space-between;
}
.card-tag .status-live { color: var(--accent-2); }
.card-tag .status-dev { color: var(--accent); }
.card-tag .status-archived { color: var(--text-dim); }
.card h3 { font-size: 19px; }
.card p { color: var(--text-muted); font-size: 14.5px; }
.card-links { display: flex; gap: 16px; margin-top: auto; padding-top: 6px; font-family: var(--font-mono); font-size: 12.5px; }
.card-links a { color: var(--accent); border-bottom: 1px solid transparent; }
.card-links a:hover { border-color: var(--accent); }
.card-links .muted { color: var(--text-dim); }
.stack {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-dim);
}

/* ---------- about / stats ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 780px) { .about-grid { grid-template-columns: 1fr; } }
.about-body p { color: var(--text-muted); margin-bottom: 16px; font-size: 16px; }
.about-body p:last-child { margin-bottom: 0; }
.stat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--surface);
}
.stat .num { font-family: var(--font-mono); font-size: 26px; color: var(--accent); }
.stat .label { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); margin-top: 6px; letter-spacing: 0.05em; }

/* ---------- timeline (resume) ---------- */
.timeline { position: relative; border-left: 1px solid var(--border); padding-left: 32px; }
.tl-item { position: relative; padding-bottom: 48px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -37px; top: 4px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent-dim);
}
.tl-item.current::before { border-color: var(--accent); background: var(--accent); box-shadow: 0 0 0 4px rgba(255, 180, 84, 0.15); }
.tl-date { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); letter-spacing: 0.05em; margin-bottom: 6px; }
.tl-role { font-size: 20px; margin-bottom: 2px; }
.tl-org { color: var(--accent); font-family: var(--font-mono); font-size: 13.5px; margin-bottom: 14px; }
.tl-item ul { display: flex; flex-direction: column; gap: 9px; }
.tl-item li { color: var(--text-muted); font-size: 15px; padding-left: 18px; position: relative; }
.tl-item li::before { content: "—"; position: absolute; left: 0; color: var(--text-dim); }

.skills-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.skills-cloud .chip { font-size: 12px; padding: 6px 12px; color: var(--text-muted); }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}
footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; }
.social-row { display: flex; gap: 18px; }
.social-row a { color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.social-row a:hover { color: var(--accent); }
.social-row a.soon { color: var(--text-dim); cursor: default; pointer-events: none; }
.social-row .soon-badge {
  font-size: 9px; border: 1px solid var(--border); padding: 1px 5px; border-radius: 20px; margin-left: 4px;
}

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- misc pages ---------- */
.page-hero { padding: 64px 0 20px; }
.page-hero h1 { font-size: clamp(30px, 4.5vw, 46px); }
.page-hero .eyebrow { margin-top: 6px; }

.donate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 780px) { .donate-grid { grid-template-columns: 1fr; } }
.donate-card { text-align: left; }
.donate-card .amount { font-family: var(--font-mono); color: var(--accent); font-size: 13px; margin-bottom: 8px; }

.blog-list { display: flex; flex-direction: column; }
.blog-item {
  display: grid; grid-template-columns: 140px 1fr; gap: 24px;
  padding: 28px 0; border-bottom: 1px solid var(--border-soft);
}
.blog-item:first-child { padding-top: 0; }
@media (max-width: 620px) { .blog-item { grid-template-columns: 1fr; gap: 8px; } }
.blog-date { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); padding-top: 3px; }
.blog-item h3 { font-size: 20px; margin-bottom: 8px; }
.blog-item h3 a:hover { color: var(--accent); }
.blog-item p { color: var(--text-muted); font-size: 15px; }
.blog-tags { margin-top: 10px; display: flex; gap: 8px; }

.post-body { max-width: 68ch; }
.post-body p { color: var(--text-muted); margin-bottom: 18px; font-size: 16.5px; }
.post-body h2 { margin-top: 36px; margin-bottom: 14px; font-size: 22px; }
.post-body code { font-family: var(--font-mono); background: var(--surface-2); padding: 2px 6px; border-radius: 3px; font-size: 14px; }
.post-body pre { background: var(--surface-2); border: 1px solid var(--border); padding: 16px; border-radius: var(--radius); overflow-x: auto; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
@media (max-width: 780px) { .contact-grid { grid-template-columns: 1fr; } }
.field { margin-bottom: 18px; }
.field label { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); margin-bottom: 8px; letter-spacing: 0.05em; }
.field input, .field textarea {
  width: 100%; background: var(--surface); border: 1px solid var(--border); color: var(--text);
  padding: 12px 14px; border-radius: var(--radius); font-family: var(--font-display); font-size: 14.5px;
}
.field input:focus, .field textarea:focus { border-color: var(--accent-dim); outline: none; }
.field textarea { resize: vertical; min-height: 120px; }
.form-note { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); margin-top: 10px; }