/* ============================================================
   CardCatalog — dark technical design system
   ============================================================ */

:root {
  /* surfaces */
  --bg:        #060911;
  --bg-2:      #080d18;
  --panel:     rgba(20, 28, 44, 0.55);
  --panel-2:   rgba(15, 21, 34, 0.7);
  --line:      rgba(120, 150, 200, 0.14);
  --line-2:    rgba(120, 150, 200, 0.28);

  /* ink */
  --ink:       #e8eef8;
  --ink-soft:  #aeb9cc;
  --ink-mute:  #6c788f;

  /* accents */
  --blue:   #4d8dff;
  --cyan:   #2fe0e0;
  --green:  #46e39a;
  --purple: #a98bff;

  --blue-g:   rgba(77, 141, 255, 0.55);
  --cyan-g:   rgba(47, 224, 224, 0.5);
  --green-g:  rgba(70, 227, 154, 0.5);
  --purple-g: rgba(169, 139, 255, 0.5);

  /* type */
  --f-display: "Space Grotesk", system-ui, sans-serif;
  --f-body:    "Manrope", system-ui, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, monospace;

  /* layout */
  --maxw: 1180px;
  --radius: 16px;
  --radius-lg: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* fixed ambient background: grid + radial glows */
.bg-field {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 78% -5%, rgba(77,141,255,0.16), transparent 60%),
    radial-gradient(800px 700px at 5% 12%, rgba(169,139,255,0.12), transparent 55%),
    radial-gradient(1000px 800px at 50% 105%, rgba(47,224,224,0.10), transparent 60%),
    var(--bg);
}
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(120,150,200,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(120,150,200,0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 30%, #000 55%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 100% 70% at 50% 30%, #000 55%, transparent 100%);
}
#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

/* ---------- layout primitives ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
section { position: relative; padding: clamp(72px, 11vh, 140px) 0; }
.section-tag {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--f-mono);
  font-size: 12.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft);
  padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}
.section-tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan-g); }
h1,h2,h3 { font-family: var(--f-display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.08; margin: 0; }
.h-sec { font-size: clamp(30px, 4.4vw, 50px); margin: 22px 0 16px; text-wrap: balance; }
.lede { font-size: clamp(17px, 2vw, 20px); color: var(--ink-soft); max-width: 720px; text-wrap: pretty; }
.mono { font-family: var(--f-mono); }
.accent-blue { color: var(--blue); }
.accent-cyan { color: var(--cyan); }
.accent-green { color: var(--green); }
.accent-purple { color: var(--purple); }

/* ---------- glass card ---------- */
.glass {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  position: relative;
}
.glass::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(160deg, rgba(255,255,255,0.16), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: linear-gradient(to bottom, rgba(6,9,17,0.85), rgba(6,9,17,0.2));
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(6,9,17,0.9); }
.nav .brand { display: flex; align-items: center; gap: 11px; font-family: var(--f-display); font-weight: 600; font-size: 18px; letter-spacing: -0.01em; }
.brand .glyph {
  width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(77,141,255,0.25), rgba(47,224,224,0.18));
  border: 1px solid var(--line-2);
  position: relative;
}
.brand .glyph::after { content: ""; position: absolute; inset: 0; border-radius: inherit; box-shadow: inset 0 0 12px rgba(47,224,224,0.4); }
.brand .glyph .bars { display: grid; grid-template-columns: repeat(3, 3px); gap: 2.5px; }
.brand .glyph .bars i { display: block; width: 3px; border-radius: 2px; background: var(--cyan); }
.brand .glyph .bars i:nth-child(1){ height: 8px; } .brand .glyph .bars i:nth-child(2){ height: 14px; background: var(--blue);} .brand .glyph .bars i:nth-child(3){ height: 11px; background: var(--purple);}
.nav .nav-links { display: flex; gap: 26px; align-items: center; }
.nav .nav-links a { color: var(--ink-soft); text-decoration: none; font-size: 14.5px; transition: color .2s; }
.nav .nav-links a:hover { color: var(--ink); }
.nav .nav-tag { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; }
@media (max-width: 860px){ .nav .nav-links a:not(.nav-tag){ display: none; } }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding-top: 132px; }
.hero-grid { display: grid; gap: 30px; }
.hero-head { max-width: 880px; }
.eyebrow {
  display: inline-flex; gap: 10px; align-items: center;
  font-family: var(--f-mono); font-size: 13px; letter-spacing: 0.04em;
  color: var(--ink-soft); padding: 8px 15px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--panel-2);
  margin-bottom: 26px;
}
.eyebrow .live { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 var(--green-g); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%{ box-shadow: 0 0 0 0 rgba(70,227,154,0.5);} 70%{ box-shadow: 0 0 0 9px rgba(70,227,154,0);} 100%{ box-shadow: 0 0 0 0 rgba(70,227,154,0);} }
.hero h1 {
  font-size: clamp(52px, 9vw, 116px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, #ffffff 30%, #9fb4d8 120%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .sub { font-family: var(--f-display); font-weight: 500; font-size: clamp(20px, 3vw, 30px); color: var(--ink); margin: 22px 0 0; letter-spacing: -0.01em; max-width: 760px; text-wrap: balance; }
.hero .desc { margin-top: 20px; color: var(--ink-soft); max-width: 680px; font-size: 18px; text-wrap: pretty; }
.hero .sub .grad { background: linear-gradient(100deg, var(--cyan), var(--blue) 60%, var(--purple)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* metric strip */
.metrics { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-top: 48px; }
.metric { padding: 20px 18px; border-radius: var(--radius); }
.metric .val { font-family: var(--f-mono); font-size: 27px; font-weight: 600; letter-spacing: -0.02em; color: var(--ink); display: flex; align-items: baseline; gap: 3px; }
.metric .val .u { font-size: 14px; color: var(--ink-soft); font-weight: 500; }
.metric .lab { font-size: 12.5px; color: var(--ink-mute); margin-top: 7px; letter-spacing: 0.02em; }
.metric .spark { height: 2px; margin-top: 14px; border-radius: 2px; background: linear-gradient(90deg, var(--accent, var(--blue)), transparent); }
@media (max-width: 980px){ .metrics { grid-template-columns: repeat(3,1fr);} }
@media (max-width: 560px){ .metrics { grid-template-columns: repeat(2,1fr);} .metric .val{ font-size: 22px;} }

/* ============================================================
   PIPELINE (hero visual)
   ============================================================ */
.pipeline-shell { margin-top: 40px; padding: 26px; border-radius: var(--radius-lg); overflow: hidden; }
.pipeline-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; flex-wrap: wrap; gap: 12px; }
.pipeline-head .title { font-family: var(--f-mono); font-size: 13px; color: var(--ink-soft); letter-spacing: 0.08em; text-transform: uppercase; }
.pipeline-head .legend { display: flex; gap: 16px; font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); flex-wrap: wrap; }
.pipeline-head .legend span { display: inline-flex; align-items: center; gap: 6px; }
.pipeline-head .legend i { width: 8px; height: 8px; border-radius: 2px; }
.pipeline-stage-wrap { position: relative; width: 100%; }
#pipeline-svg { width: 100%; height: auto; display: block; }
.pl-node-label { font-family: var(--f-mono); font-size: 12.5px; fill: var(--ink); }
.pl-node-sub { font-family: var(--f-mono); font-size: 10px; fill: var(--ink-mute); }

/* column split detail under pipeline */
.col-split { display: flex; align-items: center; gap: 16px; margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.cs-label { font-size: 12px; color: var(--ink-mute); letter-spacing: 0.04em; }
.cs-cols { display: flex; gap: 10px; flex-wrap: wrap; }
.cs-chip {
  font-size: 12px; padding: 8px 13px; border-radius: 9px;
  border: 1px solid color-mix(in oklab, var(--c) 40%, transparent);
  background: color-mix(in oklab, var(--c) 9%, transparent);
  color: var(--ink); display: inline-flex; gap: 7px; align-items: baseline;
  animation: chipPop .5s both;
}
.cs-chip b { color: var(--c); font-weight: 600; font-size: 11px; }
.cs-chip.ghost { border-style: dashed; background: transparent; color: var(--ink-soft); }
@keyframes chipPop { from { opacity: 0; transform: translateY(8px) scale(.96); } to { opacity: 1; transform: none; } }

/* id strip viz */
.id-strip { display: flex; gap: 3px; align-items: flex-end; height: 38px; }
.id-strip i { flex: 1; border-radius: 2px 2px 0 0; background: linear-gradient(to top, var(--blue), color-mix(in oklab, var(--blue) 30%, transparent)); opacity: 0.55; }

/* ============================================================
   WHY / cardinality
   ============================================================ */
.three-col { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 44px; }
@media (max-width: 860px){ .three-col { grid-template-columns: 1fr; } }
.stat-card { padding: 28px; border-radius: var(--radius-lg); overflow: hidden; }
.stat-card .icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; border: 1px solid var(--line-2); margin-bottom: 18px; }
.stat-card .big { font-family: var(--f-mono); font-weight: 600; font-size: clamp(40px, 6vw, 60px); letter-spacing: -0.03em; line-height: 1; }
.stat-card .name { font-family: var(--f-display); font-size: 20px; margin: 14px 0 8px; font-weight: 600; }
.stat-card p { color: var(--ink-soft); font-size: 15px; margin: 0; }
.stat-card .viz { margin-top: 20px; }
.card-explain { margin-top: 34px; padding: 24px 28px; border-radius: var(--radius); border-left: 2px solid var(--cyan); }
.card-explain p { margin: 0; color: var(--ink-soft); }

/* distinct-value dot grid viz */
.dotgrid { display: grid; grid-template-columns: repeat(13, 1fr); gap: 5px; }
.dotgrid i { aspect-ratio: 1; border-radius: 2px; background: rgba(120,150,200,0.12); }

/* ============================================================
   ARCHITECTURE
   ============================================================ */
.arch { display: grid; gap: 0; margin-top: 46px; position: relative; }
.arch-layer {
  display: grid; grid-template-columns: 220px 1fr; gap: 28px;
  padding: 30px 30px; border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--panel-2);
  margin-bottom: 16px;
  opacity: 0.4; transform: translateY(18px);
  transition: opacity .6s, transform .6s, border-color .6s, box-shadow .6s;
}
.arch-layer.active { opacity: 1; transform: none; border-color: var(--line-2); box-shadow: 0 0 0 1px var(--accent-c, var(--blue-g)), 0 24px 60px -30px var(--accent-c, var(--blue-g)); }
.arch-layer .layer-id { display: flex; flex-direction: column; gap: 10px; }
.arch-layer .layer-num { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); letter-spacing: 0.1em; }
.arch-layer .layer-name { font-family: var(--f-display); font-size: 22px; font-weight: 600; }
.arch-layer .layer-badge { font-family: var(--f-mono); font-size: 11px; padding: 5px 10px; border-radius: 6px; align-self: flex-start; border: 1px solid var(--line-2); color: var(--ink-soft); }
.arch-layer ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.arch-layer li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-soft); font-size: 15.5px; }
.arch-layer li code { font-family: var(--f-mono); font-size: 13px; color: var(--cyan); background: rgba(47,224,224,0.08); padding: 1px 7px; border-radius: 5px; }
.arch-layer li::before { content: ""; flex: none; width: 6px; height: 6px; margin-top: 9px; border-radius: 50%; background: var(--accent-c, var(--blue)); box-shadow: 0 0 8px var(--accent-c, var(--blue)); }
.arch-flow { display: grid; place-items: center; height: 26px; }
.arch-flow svg { overflow: visible; }
@media (max-width: 760px){ .arch-layer { grid-template-columns: 1fr; gap: 18px; } }

/* ============================================================
   QUERY DEMO
   ============================================================ */
.demo { display: grid; grid-template-columns: 360px 1fr; gap: 24px; margin-top: 44px; align-items: stretch; }
@media (max-width: 920px){ .demo { grid-template-columns: 1fr; } }
.query-builder { padding: 26px; border-radius: var(--radius-lg); }
.query-builder h3 { font-size: 16px; font-family: var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); font-weight: 500; margin-bottom: 18px; }
.qmode { display: grid; gap: 10px; }
.qmode button {
  text-align: left; width: 100%; cursor: pointer;
  background: var(--panel-2); border: 1px solid var(--line); color: var(--ink-soft);
  padding: 14px 16px; border-radius: 12px; font-family: var(--f-body); font-size: 15px;
  transition: all .2s; display: flex; flex-direction: column; gap: 3px;
}
.qmode button .op { font-family: var(--f-mono); font-size: 11.5px; color: var(--ink-mute); }
.qmode button:hover { border-color: var(--line-2); color: var(--ink); }
.qmode button.sel { border-color: var(--accent-c, var(--blue)); background: color-mix(in oklab, var(--accent-c, var(--blue)) 12%, transparent); color: var(--ink); box-shadow: 0 0 0 1px var(--accent-c, var(--blue)); }
.qparam { margin-top: 18px; }
.qparam label { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); display: block; margin-bottom: 8px; }
.qparam select { width: 100%; background: var(--panel-2); color: var(--ink); border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; font-family: var(--f-mono); font-size: 14px; }
.qrun { margin-top: 18px; width: 100%; cursor: pointer; border: none; border-radius: 12px; padding: 14px; font-family: var(--f-mono); font-weight: 600; font-size: 14px; letter-spacing: 0.04em; color: #04121f; background: linear-gradient(100deg, var(--cyan), var(--blue)); transition: filter .2s, transform .1s; }
.qrun:hover { filter: brightness(1.1); } .qrun:active { transform: translateY(1px); }

.bitmap-panel { padding: 26px; border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; }
.bitmap-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.bitmap-head .explain { font-family: var(--f-mono); font-size: 13px; color: var(--cyan); }
.bitmap-head .stat { font-family: var(--f-mono); font-size: 13px; color: var(--ink-soft); }
.bitmap-head .stat b { color: var(--ink); }
.bm-rows { display: grid; gap: 16px; }
.bm-row .bm-label { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); margin-bottom: 7px; display: flex; justify-content: space-between; }
.bm-bits { display: flex; flex-wrap: wrap; gap: 3px; }
.bm-bits i { width: 11px; height: 11px; border-radius: 2px; background: rgba(120,150,200,0.1); transition: background .25s, box-shadow .25s, transform .25s; }
.bm-bits i.on { background: var(--bit-c, var(--blue)); box-shadow: 0 0 7px var(--bit-c, var(--blue)); }
.bm-op { display: flex; align-items: center; gap: 10px; font-family: var(--f-mono); font-size: 13px; color: var(--ink-mute); padding: 4px 0; }
.bm-op .line { flex: 1; height: 1px; background: var(--line); }
.demo-note { margin-top: 22px; padding: 14px 18px; border-radius: 12px; border: 1px dashed var(--line-2); font-size: 13.5px; color: var(--ink-mute); display: flex; gap: 12px; align-items: flex-start; }
.demo-note b { color: var(--ink-soft); font-weight: 600; }

/* ============================================================
   PERFORMANCE
   ============================================================ */
.perf-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 44px; }
@media (max-width: 900px){ .perf-grid { grid-template-columns: 1fr; } }
.chart-card { padding: 26px; border-radius: var(--radius-lg); }
.chart-card .ct { font-family: var(--f-display); font-size: 18px; font-weight: 600; }
.chart-card .cs { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); margin: 4px 0 18px; }
.chart-card svg { width: 100%; height: auto; overflow: visible; }
.axis-label { font-family: var(--f-mono); font-size: 10.5px; fill: var(--ink-mute); }
.chart-legend { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 14px; font-family: var(--f-mono); font-size: 12px; color: var(--ink-soft); }
.chart-legend span { display: inline-flex; align-items: center; gap: 7px; }
.chart-legend i { width: 14px; height: 3px; border-radius: 2px; }

.counter-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-top: 22px; }
@media (max-width: 760px){ .counter-row { grid-template-columns: repeat(2,1fr); } }
.counter { padding: 22px; border-radius: var(--radius); }
.counter .cval { font-family: var(--f-mono); font-size: 32px; font-weight: 600; letter-spacing: -0.02em; }
.counter .cunit { font-size: 15px; color: var(--ink-soft); }
.counter .clab { font-size: 13px; color: var(--ink-mute); margin-top: 6px; }

.compare-strip { margin-top: 22px; padding: 30px; border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; gap: clamp(16px,4vw,50px); flex-wrap: wrap; text-align: center; }
.compare-strip .ci { font-family: var(--f-mono); }
.compare-strip .ci .top { font-size: 13px; color: var(--ink-mute); letter-spacing: 0.06em; text-transform: uppercase; }
.compare-strip .ci .num { font-size: clamp(34px,5vw,52px); font-weight: 600; letter-spacing: -0.02em; }
.compare-strip .arrow { font-size: 30px; color: var(--cyan); }
.compare-strip .strike { text-decoration: line-through; color: var(--ink-mute); }

/* ============================================================
   CRUD / PERSISTENCE
   ============================================================ */
.crud-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; margin-top: 44px; }
@media (max-width: 980px){ .crud-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 520px){ .crud-grid { grid-template-columns: 1fr; } }
.crud-card { padding: 24px; border-radius: var(--radius); overflow: hidden; }
.crud-card .tag { font-family: var(--f-mono); font-size: 12px; padding: 4px 10px; border-radius: 6px; display: inline-block; margin-bottom: 16px; border: 1px solid var(--line-2); }
.crud-card h3 { font-size: 19px; margin-bottom: 8px; }
.crud-card p { font-size: 14.5px; color: var(--ink-soft); margin: 0; }
.crud-card .cplx { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.crud-card .cplx b { color: var(--green); }
.snapshot-card { margin-top: 18px; padding: 30px; border-radius: var(--radius-lg); display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
@media (max-width: 700px){ .snapshot-card { grid-template-columns: 1fr; } }
.snapshot-card h3 { font-size: 22px; margin-bottom: 8px; }
.snapshot-card p { color: var(--ink-soft); margin: 0; max-width: 560px; }
.snapshot-metrics { display: flex; gap: 26px; }
.snapshot-metrics .sm .v { font-family: var(--f-mono); font-size: 26px; font-weight: 600; color: var(--green); }
.snapshot-metrics .sm .l { font-family: var(--f-mono); font-size: 11px; color: var(--ink-mute); text-transform: uppercase; letter-spacing: 0.06em; }

/* ============================================================
   CHALLENGES
   ============================================================ */
.bug-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; margin-top: 44px; }
@media (max-width: 820px){ .bug-grid { grid-template-columns: 1fr; } }
.bug-card { padding: 24px 26px; border-radius: var(--radius); display: grid; grid-template-columns: 1fr; gap: 14px; overflow: hidden; }
.bug-card .bug-top { display: flex; align-items: center; gap: 12px; }
.bug-card .bug-state { font-family: var(--f-mono); font-size: 11px; padding: 4px 9px; border-radius: 6px; letter-spacing: 0.05em; }
.bug-card .bug-state.bug { color: #ff9b9b; background: rgba(255,90,90,0.1); border: 1px solid rgba(255,90,90,0.3); }
.bug-card .bug-state.fix { color: var(--green); background: rgba(70,227,154,0.1); border: 1px solid rgba(70,227,154,0.3); }
.bug-card h3 { font-size: 18px; }
.bug-card .bug-line { display: flex; gap: 12px; font-size: 14.5px; }
.bug-card .bug-line .ic { flex: none; font-family: var(--f-mono); }
.bug-card .bug-line.b { color: var(--ink-soft); }
.bug-card .bug-line.f { color: var(--ink); }
.bug-card .arrow-down { color: var(--cyan); font-family: var(--f-mono); font-size: 13px; }

/* ============================================================
   FINAL CTA
   ============================================================ */
.final { text-align: center; padding-bottom: 60px; }
.final-card { padding: clamp(44px, 7vw, 84px) 32px; border-radius: 28px; overflow: hidden; position: relative; }
.final-card h2 { font-size: clamp(30px, 5vw, 58px); max-width: 880px; margin: 0 auto; text-wrap: balance; background: linear-gradient(180deg, #fff, #9fb4d8 130%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.final-card p { color: var(--ink-soft); max-width: 640px; margin: 22px auto 0; font-size: 18px; text-wrap: pretty; }
.cta-row { display: flex; gap: 14px; justify-content: center; margin-top: 36px; flex-wrap: wrap; }
.btn { cursor: pointer; text-decoration: none; font-family: var(--f-mono); font-size: 14.5px; font-weight: 500; padding: 14px 26px; border-radius: 12px; transition: all .2s; display: inline-flex; align-items: center; gap: 9px; }
.btn-primary { color: #04121f; background: linear-gradient(100deg, var(--cyan), var(--blue)); border: 1px solid transparent; }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); }
.btn-ghost { color: var(--ink); background: var(--panel); border: 1px solid var(--line-2); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 44px 0 60px; }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; align-items: flex-start; }
.footer .credits { font-size: 14px; color: var(--ink-soft); }
.footer .credits .uni { color: var(--ink); font-weight: 600; }
.footer .members { font-family: var(--f-mono); font-size: 13px; color: var(--ink-mute); margin-top: 10px; line-height: 1.9; }
.footer .members b { color: var(--ink-soft); font-weight: 500; }
.footer .meta { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); text-align: right; }
@media (max-width: 640px){ .footer .meta { text-align: left; } }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; } .reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; } .reveal.d5 { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce){
  * { animation-duration: .001s !important; transition-duration: .001s !important; }
  .reveal { opacity: 1; transform: none; }
}