/* ═══════════════════════════════════════════════════════════════════
   CEREPORTAL · NEURO·DRAFT REPORTER
   --------------------------------------------------------------------
   Aesthetic:  scientific instrument readout × editorial print
   Type:       Fraunces (variable serif) + JetBrains Mono (data)
   Palette:    warm-ink black / cream / signal amber + data cyan-teal
   Identity:   multi-channel EEG hero · band power meters · electrode glyph
   ═══════════════════════════════════════════════════════════════════ */

:root {
  /* ── canvas (cooler ink for clinical precision) ── */
  --ink-0: #08090b;
  --ink-1: #0f1115;
  --ink-2: #161a20;
  --ink-3: #232831;
  --ink-4: #353c47;
  --ink-5: #4d5564;

  /* ── cream type ── */
  --cream-1: #ede6d3;
  --cream-2: #cbc4af;
  --cream-3: #918a7a;
  --cream-4: #5e5849;
  --cream-5: #3d382f;

  /* ── primary brand: signal amber ── */
  --signal: #ff6b35;
  --signal-soft: #ff8a5e;
  --signal-dim: #ff6b3530;
  --signal-faint: #ff6b3510;

  /* ── secondary: data cyan-teal (the EEG/clinical accent) ── */
  --data: #00d9b8;
  --data-soft: #4af0d3;
  --data-dim: #00d9b830;
  --data-faint: #00d9b812;
  --data-glow: #00d9b850;

  /* ── risk tiers ── */
  --risk-low: #84a98c;
  --risk-mid: #e9c46a;
  --risk-high: #e76f51;

  /* ── radii & motion ── */
  --r-sm: 4px;
  --r-md: 6px;
  --r-lg: 10px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-snap: cubic-bezier(0.85, 0, 0.15, 1);

  /* ── type stack ── */
  --serif: "Fraunces", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP",
    Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

/* ───────── reset & base ───────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--ink-0);
  color: var(--cream-1);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "ss01", "ss02";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}
button {
  font: inherit;
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
ol, ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
dl, dd {
  margin: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ───────── background atmosphere ───────── */
.grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(circle, rgba(237, 230, 211, 0.022) 1px, transparent 1px),
    linear-gradient(rgba(237, 230, 211, 0.01) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237, 230, 211, 0.01) 1px, transparent 1px);
  background-size: 32px 32px, 96px 96px, 96px 96px;
}

.vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(
    ellipse at 50% 0%,
    transparent 0%,
    transparent 45%,
    rgba(0, 0, 0, 0.6) 100%
  );
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.42;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.95' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.7 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ───────── boot sequence ───────── */
/* On initial load, body has class "booting". A scan line sweeps top-to-bottom.
   App.js removes the class after ~700ms, triggering all stagger animations. */
.boot-scan {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  z-index: 100;
  background: linear-gradient(
    90deg,
    transparent,
    var(--data) 20%,
    var(--data-soft) 50%,
    var(--data) 80%,
    transparent
  );
  box-shadow: 0 0 40px var(--data-glow), 0 0 8px var(--data);
  opacity: 0;
  transform: translateY(0);
}

body.booting .boot-scan {
  animation: boot-sweep 0.8s var(--ease-snap) forwards;
}

@keyframes boot-sweep {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(100vh);
  }
}

/* During boot, hide everything except boot-scan */
body.booting .signal-trace,
body.booting .site-header,
body.booting .layout,
body.booting .site-footer {
  opacity: 0;
}

body:not(.booting) .signal-trace,
body:not(.booting) .site-header,
body:not(.booting) .layout,
body:not(.booting) .site-footer {
  animation: rise 0.6s var(--ease) both;
}

body:not(.booting) .layout {
  animation-delay: 0.15s;
}
body:not(.booting) .site-footer {
  animation-delay: 0.3s;
}

/* ───────── signal trace at top ───────── */
.signal-trace {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 28px;
  color: var(--signal);
  opacity: 0.5;
  pointer-events: none;
  z-index: 5;
}

.signal-trace-line {
  stroke-dasharray: 3 6;
  animation: trace-drift 18s linear infinite;
}

@keyframes trace-drift {
  to {
    stroke-dashoffset: -120;
  }
}

/* ───────── header masthead ───────── */
.site-header {
  position: relative;
  z-index: 10;
  padding: 64px clamp(20px, 5vw, 64px) 36px;
  border-bottom: 1px solid var(--ink-3);
  max-width: 1480px;
  margin: 0 auto;
}

.masthead {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.mast-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* brand mark — 10-20 system inspired electrode constellation */
.brand-mark {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  color: var(--signal);
}

.brand-mark .ring {
  fill: none;
  stroke: currentColor;
  transform-origin: 28px 28px;
}
.brand-mark .ring.outer {
  stroke-opacity: 0.16;
  stroke-dasharray: 1 4;
  animation: brand-rotate 80s linear infinite;
}
.brand-mark .ring.mid {
  stroke-opacity: 0.3;
  stroke-dasharray: 2 6;
  animation: brand-rotate-rev 50s linear infinite;
}
.brand-mark .ring.inner {
  stroke-opacity: 0.55;
  stroke-dasharray: 3 4;
}
.brand-mark .node {
  fill: var(--cream-1);
}
.brand-mark .node.primary {
  fill: var(--cream-1);
}
.brand-mark .node.dim {
  fill: var(--cream-3);
  opacity: 0.6;
}
.brand-mark .core {
  fill: var(--signal);
  filter: drop-shadow(0 0 6px var(--signal-dim));
  animation: core-pulse 2.4s var(--ease) infinite;
  transform-origin: 28px 28px;
}
.brand-mark .spike {
  fill: var(--data);
  filter: drop-shadow(0 0 6px var(--data-glow));
}

@keyframes brand-rotate {
  to { transform: rotate(360deg); }
}
@keyframes brand-rotate-rev {
  to { transform: rotate(-360deg); }
}
@keyframes core-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(1.25); }
}

/* masthead text */
.mast-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mast-pre {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--data);
  text-transform: uppercase;
  font-weight: 500;
}

.mast-title {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 300;
  line-height: 0.9;
  letter-spacing: -0.025em;
  margin: 4px 0 6px;
  font-variation-settings: "opsz" 144, "WONK" 1, "SOFT" 30;
}

.mast-cere {
  color: var(--cream-1);
  font-style: italic;
  font-weight: 400;
}

.mast-portal {
  color: var(--signal);
  font-style: normal;
  font-weight: 500;
}

.mast-sub {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cream-3);
  text-transform: uppercase;
  flex-wrap: wrap;
}

.mast-sub em {
  font-style: normal;
  color: var(--cream-1);
  font-weight: 500;
}

.mast-dot {
  color: var(--cream-5);
}

.mast-version {
  color: var(--cream-3);
}

/* status block (right-aligned in masthead) */
.mast-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.status-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--ink-1);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-sm);
  color: var(--cream-2);
}

/* mini live waveform (replaces simple dot) */
.status-wave {
  width: 60px;
  height: 14px;
  flex-shrink: 0;
  color: var(--data);
}

.status-wave-line {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 3px var(--data-glow));
}

body.booting .status-wave {
  color: var(--cream-4);
}

.status-label {
  font-weight: 500;
  white-space: nowrap;
}

body.booting .status-label {
  color: var(--cream-4);
  animation: blink 0.8s steps(2, end) infinite;
}

@keyframes blink {
  to { opacity: 0.3; }
}

.status-time {
  color: var(--cream-3);
  font-variant-numeric: tabular-nums;
  font-size: 10.5px;
}

/* ───────── HERO EEG WAVEFORM (signature element) ───────── */
.hero-eeg {
  margin-bottom: 28px;
  animation: rise 0.9s var(--ease) 0.3s both;
}

.hero-eeg-frame {
  position: relative;
  background: linear-gradient(180deg, var(--ink-1) 0%, #060709 100%);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(237, 230, 211, 0.04),
    0 4px 24px rgba(0, 0, 0, 0.3);
}

/* graph paper grid behind waveform */
.hero-eeg-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 217, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 217, 184, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(0, 217, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 217, 184, 0.08) 1px, transparent 1px);
  background-size: 16px 16px, 16px 16px, 80px 80px, 80px 80px;
}

.hero-eeg-svg {
  position: relative;
  display: block;
  width: 100%;
  height: 220px;
  z-index: 1;
}

.hero-eeg-svg .baseline {
  stroke: var(--ink-3);
  stroke-width: 0.5;
  stroke-dasharray: 2 4;
  opacity: 0.5;
}

.hero-eeg-svg .channel-trace {
  fill: none;
  stroke: var(--data);
  stroke-width: 1.2;
  stroke-linejoin: round;
  stroke-linecap: round;
  filter: drop-shadow(0 0 3px var(--data-glow));
  /* the path is generated 2x viewBox-wide; translate to scroll */
  animation: hero-scroll 14s linear infinite;
  will-change: transform;
}

/* differentiate channel colors slightly for variety */
.hero-eeg-svg .channel[data-ch="fp1"] .channel-trace {
  stroke: var(--data);
}
.hero-eeg-svg .channel[data-ch="cz"] .channel-trace {
  stroke: var(--data-soft);
  opacity: 0.85;
}
.hero-eeg-svg .channel[data-ch="oz"] .channel-trace {
  stroke: var(--data);
  opacity: 0.95;
}
.hero-eeg-svg .channel[data-ch="t8"] .channel-trace {
  stroke: var(--signal);
  opacity: 0.7;
  filter: drop-shadow(0 0 3px var(--signal-dim));
  animation-duration: 18s;
}

@keyframes hero-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* channel labels (HTML overlay for crisp rendering) */
.hero-eeg-labels {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  padding: 8px 0;
  pointer-events: none;
  z-index: 2;
}

.hero-eeg-labels li {
  padding-left: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cream-2);
  font-weight: 500;
  text-transform: uppercase;
  line-height: 1;
}

.hero-eeg-labels li span {
  background: rgba(8, 9, 11, 0.85);
  padding: 4px 8px;
  border-radius: 3px;
  border-left: 2px solid var(--data);
  display: inline-block;
}

.hero-eeg-labels li:nth-child(4) span {
  border-left-color: var(--signal);
}

/* meta strip below waveform */
.hero-eeg-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink-3);
  background: var(--ink-1);
}

@media (max-width: 720px) {
  .hero-eeg-meta {
    grid-template-columns: repeat(2, 1fr);
  }
}

.he-cell {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  border-right: 1px solid var(--ink-2);
  font-family: var(--mono);
}

.he-cell:last-child {
  border-right: none;
}

.he-cell em {
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: 0.22em;
  color: var(--cream-4);
  text-transform: uppercase;
}

.he-cell span {
  font-size: 12px;
  color: var(--cream-1);
  font-variant-numeric: tabular-nums;
}

.he-cell small {
  color: var(--cream-3);
  font-size: 10px;
}

.state-pill {
  color: var(--data) !important;
  letter-spacing: 0.14em;
  font-weight: 500;
  text-transform: uppercase;
}

/* ───────── FREQUENCY BANDS METER ───────── */
.freq-bands {
  margin-bottom: 32px;
  animation: rise 0.9s var(--ease) 0.42s both;
}

.fb-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
  font-family: var(--mono);
  flex-wrap: wrap;
  gap: 8px;
}

.fb-title {
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--data);
  font-weight: 500;
}

.fb-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 12.5px;
  color: var(--cream-3);
  font-variation-settings: "opsz" 36;
}

.fb-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--ink-3);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-sm);
  overflow: hidden;
}

@media (max-width: 880px) {
  .fb-list {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 480px) {
  .fb-list {
    grid-template-columns: 1fr;
  }
}

.fb {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto auto;
  gap: 4px 10px;
  padding: 12px 14px;
  background: var(--ink-1);
  align-items: center;
}

.fb-glyph {
  grid-row: 1 / 3;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 500;
  font-variation-settings: "opsz" 144, "WONK" 1, "SOFT" 30;
  color: var(--fb-c);
  line-height: 1;
  filter: drop-shadow(0 0 6px var(--fb-c));
  opacity: 0.9;
}

.fb-name {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--cream-2);
  font-weight: 600;
  text-transform: uppercase;
}

.fb-range {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--cream-4);
}

.fb-bar {
  grid-column: 1 / 3;
  grid-row: 3;
  position: relative;
  height: 4px;
  background: var(--ink-3);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}

.fb-fill {
  --fb-pct: 0;
  position: absolute;
  inset: 0;
  width: var(--fb-pct, 0%);
  background: linear-gradient(
    90deg,
    var(--fb-c) 0%,
    var(--fb-c) 100%
  );
  box-shadow: 0 0 8px var(--fb-c);
  transition: width 0.4s var(--ease);
  border-radius: 2px;
  opacity: 0.85;
}

.fb-val {
  grid-column: 1 / 3;
  grid-row: 4;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--fb-c);
  font-variant-numeric: tabular-nums;
  margin-top: 2px;
  font-weight: 500;
  text-align: right;
}

/* ───────── tagline ───────── */
.header-tagline {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin: 0 0 8px;
  animation: rise 0.9s var(--ease) 0.5s both;
}

.tagline-en {
  font-family: var(--serif);
  font-size: clamp(20px, 2.6vw, 32px);
  font-weight: 400;
  color: var(--cream-1);
  letter-spacing: -0.015em;
  font-variation-settings: "opsz" 144, "WONK" 1;
}

.tagline-en.italic {
  font-style: italic;
  color: var(--data);
}

.header-jp {
  margin: 0 0 22px;
  font-family: var(--serif);
  font-size: 13.5px;
  color: var(--cream-3);
  font-weight: 400;
  max-width: 640px;
  line-height: 1.7;
  animation: rise 0.9s var(--ease) 0.55s both;
}

.header-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--cream-3);
  text-transform: uppercase;
  animation: rise 0.9s var(--ease) 0.6s both;
}

.header-meta em {
  font-style: normal;
  color: var(--cream-4);
  margin-right: 6px;
}

.header-meta .dot {
  color: var(--cream-5);
}

/* ───────── layout grid ───────── */
.layout {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: 36px clamp(20px, 5vw, 64px) 64px;
  max-width: 1480px;
  margin: 0 auto;
}

@media (min-width: 1024px) {
  .layout {
    grid-template-columns: minmax(0, 2.4fr) minmax(280px, 1fr);
    grid-template-areas:
      "signal archive"
      "system system";
    gap: 28px;
  }
  .signal { grid-area: signal; }
  .archive { grid-area: archive; }
  .system { grid-area: system; }
}

/* ───────── card scaffolding ───────── */
.card {
  position: relative;
  background: linear-gradient(180deg, var(--ink-1) 0%, var(--ink-2) 100%);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-md);
  padding: 28px clamp(20px, 3vw, 36px);
  animation: rise 0.85s var(--ease) both;
}

.signal { animation-delay: 0.7s; }
.archive { animation-delay: 0.78s; }
.system { animation-delay: 0.86s; }

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* corner ticks for card frame */
.card::before,
.card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--cream-4);
  pointer-events: none;
}
.card::before {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
}
.card::after {
  bottom: -1px;
  right: -1px;
  border-left: none;
  border-top: none;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--ink-3);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  flex-wrap: wrap;
}

.card-marker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card-marker .marker-bracket { color: var(--cream-4); }
.card-marker .marker-num { color: var(--cream-1); font-weight: 600; }
.card-marker .marker-sep { color: var(--cream-4); }
.card-marker .marker-name { color: var(--signal); font-weight: 500; }

.card-id {
  color: var(--cream-3);
  font-variant-numeric: tabular-nums;
}

.card-foot {
  margin-top: 24px;
  padding-top: 14px;
  border-top: 1px dashed var(--ink-3);
  text-align: right;
}

.foot-marker {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--cream-4);
  text-transform: uppercase;
}

/* ───────── readout strip (signal card top) ───────── */
.readout {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-3);
  border: 1px solid var(--ink-3);
  margin-bottom: 28px;
  border-radius: var(--r-sm);
  overflow: hidden;
}

@media (max-width: 720px) {
  .readout { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.readout-cell {
  padding: 14px 16px;
  background: var(--ink-1);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 78px;
}

@media (max-width: 720px) {
  .readout-cell.wide { grid-column: span 2; }
}

.readout-cell dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--cream-4);
  text-transform: uppercase;
}

.readout-cell dd {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cream-1);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
  line-height: 1.35;
}

.readout-cell.wide dd,
#latest-topic {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
  font-variation-settings: "opsz" 36;
  letter-spacing: -0.005em;
  color: var(--cream-1);
}

/* ───────── risk ring ───────── */
.risk-cell {
  display: flex !important;
  align-items: center;
  gap: 10px;
  flex-direction: row !important;
}

.risk-ring {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  transform: rotate(-90deg);
}

.ring-track {
  fill: none;
  stroke: var(--ink-4);
  stroke-width: 2.5;
}

.ring-bar {
  --risk-pct: 0;
  --risk-color: var(--risk-low);
  fill: none;
  stroke: var(--risk-color);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 94.25;
  stroke-dashoffset: calc(94.25 - (94.25 * var(--risk-pct) / 100));
  transition: stroke-dashoffset 0.8s var(--ease), stroke 0.4s ease;
  filter: drop-shadow(0 0 4px var(--risk-color));
  opacity: 0.85;
}

.risk-num {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 500;
  color: var(--cream-1);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.risk-max {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cream-4);
  letter-spacing: 0.1em;
}

.risk-cell[data-risk="low"] .risk-num { color: var(--risk-low); }
.risk-cell[data-risk="mid"] .risk-num { color: var(--risk-mid); }
.risk-cell[data-risk="high"] .risk-num { color: var(--risk-high); }

/* ───────── signal break divider ───────── */
.signal-break {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 24px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--cream-4);
  text-transform: uppercase;
}

.signal-break-tick {
  width: 6px;
  height: 6px;
  background: var(--signal);
  flex-shrink: 0;
  transform: rotate(45deg);
}

.signal-break-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--cream-5) 30%,
    var(--cream-5) 70%,
    transparent
  );
}

/* ───────── draft body ───────── */
.draft-frame {
  position: relative;
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink-1) 100%);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-sm);
  padding: 32px clamp(20px, 3vw, 40px);
  margin-bottom: 24px;
  overflow: hidden;
}

.draft-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--signal-faint) 0%, transparent 18%);
  pointer-events: none;
}

.draft-frame::after {
  content: "01";
  position: absolute;
  top: 12px;
  right: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--cream-5);
}

/* scrub line — animated when JS triggers .scrubbing class on draft change */
.draft-frame .scrub {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    180deg,
    transparent,
    var(--data) 20%,
    var(--data-soft) 50%,
    var(--data) 80%,
    transparent
  );
  box-shadow: 0 0 24px var(--data-glow);
  pointer-events: none;
  opacity: 0;
  left: 0;
  z-index: 3;
}

.draft-frame.scrubbing .scrub {
  animation: scrub-sweep 0.55s var(--ease-snap) forwards;
}

@keyframes scrub-sweep {
  0% { opacity: 0; left: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { opacity: 0; left: 100%; }
}

.draft-text {
  position: relative;
  margin: 0;
  padding: 0;
  font-family: var(--serif);
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: var(--cream-1);
  font-variation-settings: "opsz" 36, "WONK" 0;
  font-weight: 400;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-height: 640px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-4) transparent;
  letter-spacing: 0.005em;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.4);
}

.draft-text::-webkit-scrollbar {
  width: 6px;
}
.draft-text::-webkit-scrollbar-thumb {
  background: var(--ink-4);
  border-radius: 3px;
}

/* ───────── source & figure ───────── */
.draft-source {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.source-link {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 14px;
  background: var(--ink-2);
  border: 1px solid var(--ink-3);
  border-left: 2px solid var(--signal);
  border-radius: var(--r-sm);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.source-link:hover {
  background: var(--ink-3);
  border-left-color: var(--data);
}

.source-prefix {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--signal);
  text-transform: uppercase;
  flex-shrink: 0;
}

.source-arrow {
  font-family: var(--mono);
  color: var(--cream-3);
  font-size: 12px;
}

.source-title {
  font-family: var(--serif);
  font-size: 13.5px;
  color: var(--cream-1);
  font-weight: 400;
  line-height: 1.5;
  flex: 1;
  min-width: 200px;
  word-break: break-word;
}

.figure-frame {
  margin: 0;
  padding: 14px;
  background: var(--ink-2);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-sm);
}

.figure-frame img {
  border-radius: var(--r-sm);
  width: 100%;
  background: var(--cream-1);
}

.figure-frame figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--cream-4);
  text-transform: uppercase;
}

/* ───────── action buttons ───────── */
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: transparent;
  color: var(--cream-1);
  border: 1px solid var(--ink-4);
  border-radius: var(--r-sm);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease,
    transform 0.15s ease;
  position: relative;
  overflow: hidden;
}

.action-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    var(--signal-faint),
    transparent
  );
  transform: translateX(-100%);
  transition: transform 0.5s var(--ease);
  pointer-events: none;
}

.action-btn:hover::before {
  transform: translateX(100%);
}

.action-btn:hover {
  border-color: var(--signal);
  color: var(--cream-1);
}

.action-btn.primary {
  background: var(--signal);
  color: var(--ink-0);
  border-color: var(--signal);
  font-weight: 600;
}

.action-btn.primary:hover {
  background: var(--signal-soft);
  border-color: var(--signal-soft);
  transform: translateY(-1px);
}

.action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.action-icon {
  font-family: var(--mono);
  font-size: 12px;
  opacity: 0.7;
}

.action-btn.primary .action-icon {
  opacity: 0.9;
}

/* ───────── archive log ───────── */
.log-head {
  display: grid;
  grid-template-columns: 64px 1fr 56px;
  gap: 10px;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--cream-4);
  text-transform: uppercase;
  border-bottom: 1px dashed var(--ink-3);
}

.log {
  display: flex;
  flex-direction: column;
  max-height: 760px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-4) transparent;
}

.log::-webkit-scrollbar { width: 6px; }
.log::-webkit-scrollbar-thumb { background: var(--ink-4); border-radius: 3px; }

.log-item {
  display: grid;
  grid-template-columns: 64px 1fr 56px;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border-bottom: 1px solid var(--ink-2);
  cursor: pointer;
  transition: background 0.15s ease, padding 0.2s var(--ease);
  position: relative;
}

.log-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--data);
  box-shadow: 0 0 8px var(--data-glow);
  transition: width 0.2s var(--ease);
}

.log-item:hover {
  background: var(--ink-2);
  padding-left: 16px;
}

.log-item:hover::before { width: 2px; }

.log-item.active {
  background: var(--ink-2);
  padding-left: 16px;
}

.log-item.active::before {
  width: 3px;
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal-dim);
}

.log-time {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--cream-3);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.log-meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.log-topic {
  font-family: var(--serif);
  font-size: 13.5px;
  color: var(--cream-1);
  font-weight: 500;
  line-height: 1.3;
  font-variation-settings: "opsz" 36;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.log-template {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--cream-4);
  text-transform: uppercase;
}

.log-risk {
  font-family: var(--mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  text-align: right;
  font-weight: 500;
}

.log-risk[data-risk="low"] { color: var(--risk-low); }
.log-risk[data-risk="mid"] { color: var(--risk-mid); }
.log-risk[data-risk="high"] { color: var(--risk-high); }

.log-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cream-4);
  text-transform: uppercase;
}

.log-empty-mark {
  font-size: 18px;
  color: var(--data);
  opacity: 0.6;
}

/* ───────── system (protocol) list ───────── */
.system-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.system-list li {
  display: grid;
  grid-template-columns: 130px 24px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 6px 0;
}

@media (max-width: 720px) {
  .system-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

.sys-key {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--data);
  text-transform: uppercase;
  font-weight: 500;
}

.sys-arrow {
  font-family: var(--mono);
  color: var(--cream-4);
  text-align: center;
}

@media (max-width: 720px) {
  .sys-arrow { display: none; }
}

.sys-val {
  font-family: var(--serif);
  font-size: 14.5px;
  color: var(--cream-2);
  line-height: 1.6;
  font-variation-settings: "opsz" 36;
}

.sys-val em {
  font-style: italic;
  color: var(--cream-3);
  font-size: 0.9em;
}

.sys-val code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--ink-2);
  border: 1px solid var(--ink-3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--cream-1);
}

/* ───────── footer ───────── */
.site-footer {
  position: relative;
  z-index: 10;
  padding: 40px clamp(20px, 5vw, 64px) 56px;
  border-top: 1px solid var(--ink-3);
  text-align: center;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--cream-4);
  text-transform: uppercase;
  max-width: 1480px;
  margin: 0 auto;
}

.footer-mark-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 14px;
}

.footer-mark {
  color: var(--data);
  opacity: 0.5;
  font-size: 14px;
}

.footer-brand {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 500;
  color: var(--cream-1);
  letter-spacing: 0.32em;
  font-variation-settings: "opsz" 144, "WONK" 1;
  text-transform: none;
}

.footer-meta {
  margin: 0 0 10px;
}

.footer-meta .mono {
  font-family: var(--mono);
}

.footer-signature {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0;
  color: var(--cream-5);
  text-transform: none;
  font-variation-settings: "opsz" 144, "WONK" 1;
}

/* ───────── toast ───────── */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cream-1);
  color: var(--ink-0);
  padding: 12px 20px;
  border-radius: var(--r-sm);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  font-weight: 600;
  text-transform: uppercase;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  animation: toast-in 0.25s var(--ease);
}

.toast::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--data);
  display: inline-block;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translate(-50%, 12px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* ───────── responsive tuning ───────── */
@media (max-width: 880px) {
  .site-header {
    padding: 48px 20px 28px;
  }
  .masthead {
    margin-bottom: 32px;
  }
  .mast-left {
    align-items: center;
  }
  .mast-right {
    width: 100%;
    align-items: flex-start;
  }
  .status-block {
    align-items: flex-start;
  }
  .brand-mark {
    width: 52px;
    height: 52px;
  }
  .hero-eeg-svg { height: 180px; }
  .card { padding: 22px 18px; }
  .card::before, .card::after { width: 10px; height: 10px; }
  .draft-frame { padding: 22px 18px; }
  .actions { flex-direction: column; align-items: stretch; }
  .action-btn { justify-content: space-between; }
}

@media (max-width: 480px) {
  .hero-eeg-svg { height: 160px; }
  .hero-eeg-labels li { padding-left: 10px; font-size: 10px; }
}

/* ───────── reduced motion ───────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero-eeg-svg .channel-trace {
    animation: none !important;
  }
}

/* ───────── selection ───────── */
::selection {
  background: var(--data);
  color: var(--ink-0);
}