/* ==========================================================
   ASTROKINETIC-ID — TACTILE HEALTH OPTICS & SENSOR STUDIO
   Design System: AstraSight Style (Dark Space Health Optics)
   ========================================================== */
:root {
  --bg: #04060d;
  --bg-2: #080c18;
  --surface: rgba(16, 22, 42, 0.65);
  --surface-solid: #0e1428;
  --surface-hi: rgba(28, 38, 70, 0.75);
  --surface-card: rgba(14, 20, 38, 0.82);
  --border: rgba(140, 170, 255, 0.14);
  --border-hi: rgba(94, 242, 255, 0.45);
  --border-accent: rgba(143, 124, 255, 0.5);
  --text: #e8eeff;
  --text-dim: #9aa6c8;
  --text-faint: #5d6888;
  --cyan: #5ef2ff;
  --violet: #8f7cff;
  --magenta: #ff6ad5;
  --ok: #4dffb0;
  --warn: #ffc65c;
  --crit: #ff5d73;
  --grad: linear-gradient(120deg, var(--cyan), var(--violet) 55%, var(--magenta));
  --grad-hover: linear-gradient(120deg, #7af6ff, #a292ff 55%, #ff7fe0);
  --grad-subtle: linear-gradient(135deg, rgba(94, 242, 255, 0.12), rgba(143, 124, 255, 0.06));
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.7);
  --shadow-cyan: 0 10px 40px -10px rgba(94, 242, 255, 0.5);
  --shadow-violet: 0 10px 40px -10px rgba(143, 124, 255, 0.5);
  --font: "Space Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --maxw: 1280px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font: inherit; color: inherit; }
img, svg, canvas { display: block; max-width: 100%; }

/* ---------- Background Stars & Nebula ---------- */
#starfield {
  position: fixed; inset: 0; z-index: -2;
  width: 100%; height: 100%; pointer-events: none;
}
.nebula {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 600px at 85% -10%, rgba(143, 124, 255, 0.16), transparent 60%),
    radial-gradient(700px 500px at -10% 30%, rgba(94, 242, 255, 0.10), transparent 60%),
    radial-gradient(800px 600px at 50% 120%, rgba(255, 106, 213, 0.08), transparent 60%);
}

/* ---------- Typography & Utility ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--cyan);
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.mono { font-family: var(--mono); }
.dim { color: var(--text-dim); }
.faint { color: var(--text-faint); }

/* ---------- Sticky Navigation Bar ---------- */
header.app-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  background: rgba(4, 6, 13, 0.75);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 16px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 700; font-size: 17px; letter-spacing: -0.01em;
}
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  background: var(--grad); display: flex; align-items: center; justify-content: center;
  color: #04060d; font-weight: 900; font-size: 16px;
  box-shadow: 0 0 20px rgba(94, 242, 255, 0.5);
}
.brand-titles strong { font-size: 15px; color: #fff; letter-spacing: 0.02em; display: block; }
.brand-titles small {
  font-family: var(--mono); font-size: 9px; color: var(--cyan);
  letter-spacing: 0.18em; display: block; margin-top: -1px;
}

.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  padding: 8px 14px; border-radius: 999px; font-size: 13px; color: var(--text-dim);
  transition: color .2s, background .2s, border-color .2s; font-weight: 500;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.06); }
.nav-links a.active {
  color: var(--text); background: rgba(94, 242, 255, 0.1);
  box-shadow: inset 0 0 0 1px rgba(94,242,255,0.25);
}

.header-actions { display: flex; align-items: center; gap: 10px; }
.conn-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px; font-size: 12px;
  font-family: var(--mono); border: 1px solid var(--border);
  background: rgba(16, 22, 42, 0.8); color: var(--text-dim);
}
.conn-pill.connected {
  border-color: rgba(77, 255, 176, 0.5);
  color: var(--ok); background: rgba(77, 255, 176, 0.1);
}

/* ---------- Pulsing Dots & Waves ---------- */
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan); display: inline-block;
}
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.crit { background: var(--crit); }
.dot.pulse {
  position: relative;
}
.dot.pulse::after {
  content: ""; position: absolute; inset: -3px; border-radius: 50%;
  border: 1px solid currentColor; animation: pulse-ring 1.8s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}
@keyframes pulse-ring {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

/* ---------- Buttons & Badges ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border-radius: 999px; font-weight: 500; font-size: 14px;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  white-space: nowrap; cursor: pointer;
}
.btn-primary {
  background: var(--grad); color: #04060d; font-weight: 600;
  box-shadow: var(--shadow-cyan);
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--grad-hover);
  box-shadow: 0 14px 45px -10px rgba(143, 124, 255, 0.8);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary, .btn-ghost {
  border: 1px solid var(--border); background: rgba(255,255,255,0.04);
  color: var(--text);
}
.btn-secondary:hover, .btn-ghost:hover {
  border-color: var(--border-hi); background: rgba(94, 242, 255, 0.08);
  transform: translateY(-1px);
}
.btn-live {
  background: linear-gradient(120deg, #10b981, #06b6d4);
  color: #04060d; font-weight: 600; box-shadow: 0 10px 30px -10px rgba(16, 185, 129, 0.6);
}
.btn-live.active {
  background: linear-gradient(120deg, #ef4444, #f59e0b);
  box-shadow: 0 10px 30px -10px rgba(239, 68, 68, 0.6);
  color: #fff;
}
.btn-file {
  position: relative; overflow: hidden; cursor: pointer;
}
.btn-file input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.btn-sm { padding: 6px 14px; font-size: 12px; }

.badge {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  padding: 4px 10px; border-radius: 999px; background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border); color: var(--text-dim); text-transform: uppercase;
}
.badge.accent { border-color: rgba(94, 242, 255, 0.4); color: var(--cyan); background: rgba(94, 242, 255, 0.08); }
.badge.ok { border-color: rgba(77, 255, 176, 0.4); color: var(--ok); background: rgba(77, 255, 176, 0.08); }
.badge.warn { border-color: rgba(255, 198, 92, 0.4); color: var(--warn); background: rgba(255, 198, 92, 0.08); }

/* ---------- Main Layout & Sections ---------- */
main { padding: 40px 0 100px; display: flex; flex-direction: column; gap: 48px; }

/* ---------- Hero Section ---------- */
.hero-section {
  padding: 30px 0 10px;
}
.hero-grid {
  display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 40px; align-items: center;
}
.hero-content h1 {
  font-size: clamp(34px, 4.8vw, 62px); line-height: 1.1; margin: 12px 0 18px;
  letter-spacing: -0.025em; font-weight: 700;
}
.hero-lead {
  font-size: clamp(15px, 1.4vw, 17px); color: var(--text-dim); max-width: 680px;
  line-height: 1.65; margin-bottom: 24px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.hero-stats {
  display: flex; gap: 24px; flex-wrap: wrap; border-top: 1px solid var(--border);
  padding-top: 20px;
}
.stat-pill { display: flex; flex-direction: column; }
.stat-pill strong { font-size: 20px; font-weight: 700; color: #fff; font-family: var(--mono); }
.stat-pill span { font-size: 11px; color: var(--text-faint); letter-spacing: 0.06em; text-transform: uppercase; }

/* Hero Visual Card (Mini HUD) */
.hero-hud-card {
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero-hud-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad);
}
.hud-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px;
  border-bottom: 1px solid var(--border); padding-bottom: 12px;
}
.hud-vitals-row {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 16px;
}
.hud-vital-box {
  background: rgba(14, 20, 38, 0.7); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px;
}
.hud-vital-box span { font-size: 11px; color: var(--text-faint); display: block; font-family: var(--mono); }
.hud-vital-box strong { font-size: 18px; color: var(--cyan); display: block; font-family: var(--mono); }
.hud-sparkline-canvas { width: 100%; height: 50px; background: rgba(0,0,0,0.2); border-radius: 6px; }

/* ---------- Step Panels (Glass Cards) ---------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: border-color .3s, box-shadow .3s;
}
.panel:hover { border-color: rgba(140, 170, 255, 0.25); }

.panel-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 24px; gap: 20px; flex-wrap: wrap;
}
.panel-header-main h2 {
  font-size: clamp(22px, 2.6vw, 32px); font-weight: 700; margin: 6px 0 8px;
  letter-spacing: -0.02em;
}
.panel-header-main p { color: var(--text-dim); font-size: 14px; max-width: 680px; }
.panel-header-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* Status message bar */
.status-toast {
  padding: 12px 18px; border-radius: var(--radius-sm);
  background: rgba(94, 242, 255, 0.08); border: 1px solid rgba(94, 242, 255, 0.25);
  font-family: var(--mono); font-size: 12px; color: var(--cyan);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 24px;
}

/* ==========================================================
   01 / SPACECRAFT SELECTION & INTERIOR MAP
   ========================================================== */
.spacecraft-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.vessel-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px; cursor: pointer;
  transition: border-color .25s, transform .25s, background .25s, box-shadow .25s;
  position: relative; text-align: left;
}
.vessel-card:hover {
  border-color: var(--border-hi); transform: translateY(-2px);
  background: rgba(22, 32, 60, 0.85);
}
.vessel-card.active {
  border-color: var(--cyan);
  background: rgba(18, 30, 58, 0.95);
  box-shadow: 0 0 25px -5px rgba(94, 242, 255, 0.35);
}
.vessel-card.active::after {
  content: "ACTIVE"; position: absolute; top: 12px; right: 12px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.14em;
  padding: 2px 7px; border-radius: 999px; background: rgba(94, 242, 255, 0.15);
  color: var(--cyan); border: 1px solid rgba(94, 242, 255, 0.4);
}
.vessel-icon { font-size: 26px; margin-bottom: 10px; display: block; }
.vessel-card strong { font-size: 15px; color: #fff; display: block; margin-bottom: 4px; }
.vessel-card p { font-size: 12px; color: var(--text-dim); line-height: 1.4; margin-bottom: 10px; }
.vessel-meta { font-family: var(--mono); font-size: 11px; color: var(--text-faint); }

.vessel-upload-card {
  border: 1px dashed var(--border-hi);
  background: rgba(94, 242, 255, 0.03);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 20px;
}
.vessel-upload-card:hover {
  background: rgba(94, 242, 255, 0.08); border-color: var(--cyan);
}

/* Spacecraft Viewport Box */
.viewport-wrapper {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: #020409; overflow: hidden; position: relative;
  margin-bottom: 20px;
}
.viewport-top-controls {
  position: absolute; top: 12px; left: 16px; right: 16px; z-index: 10;
  display: flex; justify-content: space-between; align-items: center; pointer-events: none;
}
.viewport-top-controls > * { pointer-events: auto; }
.viewport-badge {
  font-family: var(--mono); font-size: 11px; padding: 5px 12px; border-radius: 999px;
  background: rgba(4, 6, 13, 0.85); border: 1px solid var(--border); color: var(--cyan);
}
.view-toggles { display: flex; gap: 4px; background: rgba(4, 6, 13, 0.85); padding: 4px; border-radius: 999px; border: 1px solid var(--border); }
.view-toggles button {
  padding: 5px 12px; border-radius: 999px; font-size: 12px; color: var(--text-dim);
  transition: all .2s;
}
.view-toggles button.active {
  background: rgba(94, 242, 255, 0.15); color: var(--cyan); border: 1px solid rgba(94, 242, 255, 0.3);
}

#spacecraft-viewport-container { width: 100%; min-height: 440px; position: relative; }
.viewport-box { width: 100%; height: 440px; position: relative; }
#architecture { width: 100%; height: 440px; }

/* Handrail Quick Selection List */
.rail-quick-select-header {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em;
  color: var(--cyan); text-transform: uppercase; margin: 16px 0 10px;
}
.rail-list {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px; margin-bottom: 16px;
}
.rail-card {
  background: rgba(14, 20, 38, 0.7); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px; cursor: pointer;
  transition: border-color .2s, transform .2s, background .2s;
}
.rail-card:hover { border-color: var(--border-hi); background: rgba(22, 32, 60, 0.8); }
.rail-card.selected {
  border-color: var(--cyan); background: rgba(18, 30, 58, 0.95);
  box-shadow: 0 0 20px -5px rgba(94, 242, 255, 0.4);
}
.rail-card-title { font-weight: 600; font-size: 14px; color: #fff; margin-bottom: 4px; }
.rail-card-meta { font-family: var(--mono); font-size: 11px; color: var(--text-dim); }

/* ==========================================================
   02 / LIVE DETECTION & REAL-TIME PSYCHOLOGY
   ========================================================== */
.live-detection-banner {
  display: flex; justify-content: space-between; align-items: center;
  background: linear-gradient(135deg, rgba(16, 22, 42, 0.95), rgba(28, 38, 70, 0.85));
  border: 1px solid var(--border-hi); border-radius: var(--radius);
  padding: 22px 28px; margin-bottom: 24px; gap: 20px; flex-wrap: wrap;
}
.live-controls-group { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.live-scenario-select label {
  font-size: 12px; color: var(--text-faint); font-family: var(--mono); margin-right: 6px;
}
.live-scenario-select select {
  background: rgba(4, 6, 13, 0.8); border: 1px solid var(--border);
  color: var(--text); padding: 8px 14px; border-radius: 8px; font-size: 13px;
}

/* Affective Diagnosis Grid */
.affective-grid {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; margin-bottom: 24px;
}
@media (max-width: 900px) {
  .affective-grid { grid-template-columns: 1fr; }
}

.emotion-card {
  background: var(--surface-card); border: 1px solid var(--border-hi);
  border-radius: var(--radius); padding: 24px; position: relative; overflow: hidden;
}
.emotion-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad);
}
.emotion-badge-row {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px;
}
.affective-state-title {
  font-size: clamp(24px, 3.2vw, 36px); font-weight: 700; color: #fff;
  letter-spacing: -0.02em; margin-bottom: 8px; display: flex; align-items: center; gap: 10px;
}
.affective-state-title .state-icon { font-size: 32px; }
.affective-state-desc {
  font-size: 14px; color: var(--text-dim); line-height: 1.5; margin-bottom: 18px;
}
.affective-wave-box {
  background: rgba(4, 6, 13, 0.6); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px; margin-bottom: 16px;
}
.wave-canvas { width: 100%; height: 60px; }

/* VEGA Copilot Box */
.vega-hud-box {
  background: rgba(10, 16, 32, 0.9); border: 1px solid var(--border-accent);
  border-radius: var(--radius); padding: 24px;
}
.vega-header {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; color: var(--violet);
}
.vega-avatar {
  width: 24px; height: 24px; border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  display: flex; align-items: center; justify-content: center; color: #04060d; font-weight: 900; font-size: 11px;
}
.vega-text {
  font-size: 13.5px; color: var(--text); line-height: 1.6;
  font-family: var(--font); margin-bottom: 14px;
}
.vega-recommendation {
  font-family: var(--mono); font-size: 11px; color: var(--ok);
  background: rgba(77, 255, 176, 0.08); border: 1px solid rgba(77, 255, 176, 0.25);
  border-radius: 6px; padding: 8px 12px;
}

/* Phenotyping KPI Metrics Grid */
.pheno-cards-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px; margin-bottom: 24px;
}
.pheno-card {
  background: var(--surface-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px; transition: border-color .2s;
}
.pheno-card:hover { border-color: var(--border-hi); }
.pheno-label {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em;
  color: var(--text-faint); text-transform: uppercase; display: block; margin-bottom: 6px;
}
.pheno-val {
  font-size: 22px; font-weight: 700; color: #fff; font-family: var(--mono); display: block;
}
.pheno-val small { font-size: 12px; color: var(--cyan); }
.pheno-sub { font-size: 11px; color: var(--text-dim); margin-top: 6px; }

/* Composite Meters */
.composite-meters-row {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.meter-box {
  background: var(--surface-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 18px;
}
.meter-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px;
  font-size: 13px; font-weight: 600;
}
.meter-bar-track {
  width: 100%; height: 8px; background: rgba(255, 255, 255, 0.08);
  border-radius: 999px; overflow: hidden; margin-bottom: 8px;
}
.meter-bar-fill {
  height: 100%; border-radius: 999px; transition: width .4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.meter-bar-fill.nominal { background: linear-gradient(90deg, #10b981, #06b6d4); }
.meter-bar-fill.elevated { background: linear-gradient(90deg, #f59e0b, #ef4444); }
.meter-sub { font-size: 11px; color: var(--text-faint); }

/* ==========================================================
   03 / DENSE SENSOR HANDRAIL & REALISTIC HAND
   ========================================================== */
.tactile-studio-split {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 28px; align-items: start;
}
@media (max-width: 980px) {
  .tactile-studio-split { grid-template-columns: 1fr; }
}

/* Realistic Anatomical Hand Box */
.hand-view-card {
  background: var(--surface-card); border: 1px solid var(--border-hi);
  border-radius: var(--radius); padding: 24px; text-align: center;
  position: relative; overflow: hidden;
}
.hand-view-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px;
}
.hand-svg-container {
  width: 100%; max-width: 320px; height: 290px; margin: 0 auto 16px;
  position: relative;
}
#hand-view { width: 100%; height: 100%; }

/* Hand Data-Driven Animations */
.hand-silhouette {
  transition: filter .3s, transform .3s;
}
.hand-silhouette.pulse-clamp {
  animation: grip-clamp 1.8s ease-in-out infinite;
}
@keyframes grip-clamp {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 8px rgba(94, 242, 255, 0.3)); }
  50% { transform: scale(0.985); filter: drop-shadow(0 0 18px rgba(94, 242, 255, 0.7)); }
}

.hand-silhouette.thrust-active {
  animation: thrust-bounce 1.6s ease-in-out infinite;
}
@keyframes thrust-bounce {
  0%, 100% { transform: translateY(0); filter: drop-shadow(0 0 10px rgba(255, 106, 213, 0.4)); }
  50% { transform: translateY(-4px); filter: drop-shadow(0 0 24px rgba(255, 106, 213, 0.8)); }
}

.hand-tremor-active {
  animation: tremor-jitter 0.12s linear infinite;
}
@keyframes tremor-jitter {
  0% { transform: translate(0, 0); }
  25% { transform: translate(0.7px, -0.7px); }
  50% { transform: translate(-0.7px, 0.7px); }
  75% { transform: translate(0.7px, 0.7px); }
  100% { transform: translate(0, 0); }
}

.thrust-vector-stream {
  stroke-dasharray: 6 4;
  animation: dash-thrust 0.8s linear infinite;
}
@keyframes dash-thrust {
  to { stroke-dashoffset: -20; }
}

/* Digit Load Sharing Bars */
.digit-bars-container {
  display: flex; flex-direction: column; gap: 8px; margin-top: 14px; text-align: left;
}
.digit-bar-card {
  background: rgba(4, 6, 13, 0.6); border: 1px solid var(--border);
  border-radius: 8px; padding: 9px 12px;
}
.digit-bar-header {
  display: flex; justify-content: space-between; font-size: 12px; margin-bottom: 5px;
}
.digit-bar-header strong { color: #fff; }
.digit-track {
  width: 100%; height: 6px; background: rgba(255, 255, 255, 0.08);
  border-radius: 999px; overflow: hidden; margin-bottom: 4px;
}
.digit-fill { height: 100%; border-radius: 999px; transition: width .3s; }
.digit-bar-card small { font-size: 10.5px; color: var(--text-faint); font-family: var(--mono); }

/* 3D Cylindrical Handrail Visualizer Box */
.rail-visualizer-card {
  background: var(--surface-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.handrail-3d-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px;
  flex-wrap: wrap; gap: 12px;
}
.rail-3d-canvas-box {
  width: 100%; height: 260px; background: #020409; border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 18px;
}
.rail-spin-controls {
  display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--text-dim);
}
.rail-spin-controls select, .rail-spin-controls input[type="range"] {
  background: rgba(4, 6, 13, 0.8); border: 1px solid var(--border);
  padding: 4px 8px; border-radius: 6px;
}

/* Unwrapped 2D Tactile Matrix */
.surface-scroll {
  width: 100%; overflow-x: auto; background: #020409;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 14px; margin-bottom: 16px;
}
#sensor-map { display: block; min-width: 650px; height: 130px; }

.legend {
  display: flex; gap: 14px; align-items: center; font-size: 11px;
  color: var(--text-dim); font-family: var(--mono); flex-wrap: wrap;
}
.legend-swatch {
  width: 10px; height: 10px; border-radius: 2px; display: inline-block; vertical-align: middle;
}
.legend-swatch.free { background: #334155; }
.legend-swatch.contact { background: var(--ok); }
.legend-swatch.missing { background: #ea580c; }

/* Interactive Hand Simulator Bar */
.simulator-bar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 12px 16px; background: rgba(94, 242, 255, 0.04);
  border: 1px solid rgba(94, 242, 255, 0.15); border-radius: var(--radius-sm);
  font-size: 12px;
}
.simulator-bar select {
  background: rgba(4, 6, 13, 0.85); border: 1px solid var(--border);
  padding: 5px 10px; border-radius: 6px; color: var(--cyan);
}

/* ==========================================================
   04 / INTERACTIVE FLIGHT & BIOMECHANICAL PARAMETERS
   ========================================================== */
.params-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px; margin-bottom: 24px;
}
.param-card {
  background: var(--surface-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px; transition: border-color .2s;
}
.param-card:hover { border-color: var(--border-hi); }
.param-top {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px;
}
.param-title {
  font-weight: 600; font-size: 14px; color: #fff; display: flex; align-items: center; gap: 8px;
}
.param-value-pill {
  font-family: var(--mono); font-size: 12px; color: var(--cyan);
  padding: 3px 10px; border-radius: 999px; background: rgba(94, 242, 255, 0.1);
  border: 1px solid rgba(94, 242, 255, 0.25);
}
.param-desc {
  font-size: 12px; color: var(--text-dim); line-height: 1.45; margin-bottom: 14px;
}
.param-slider-row {
  display: flex; align-items: center; gap: 12px; margin-bottom: 12px;
}
.param-slider-row input[type="range"] {
  flex: 1; accent-color: var(--cyan);
}
.param-presets {
  display: flex; gap: 6px; flex-wrap: wrap;
}
.preset-chip {
  font-family: var(--mono); font-size: 10px; padding: 4px 8px; border-radius: 6px;
  background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border);
  color: var(--text-dim); cursor: pointer; transition: all .15s;
}
.preset-chip:hover {
  border-color: var(--cyan); color: #fff; background: rgba(94, 242, 255, 0.1);
}

/* ==========================================================
   TIMELINE, TELEMETRY CHANNELS & RESEARCH FOOTER
   ========================================================== */
.transport {
  display: flex; align-items: center; gap: 16px; margin: 16px 0;
}
.btn-transport {
  width: 42px; height: 42px; border-radius: 50%; background: var(--grad);
  color: #04060d; font-size: 16px; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-cyan);
}
.transport input[type="range"] { flex: 1; accent-color: var(--cyan); }

#timeline, #channel-chart {
  width: 100%; height: 160px; background: #020409;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
}

.channels-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px; margin-bottom: 20px;
}
.channel-box {
  background: rgba(4, 6, 13, 0.7); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px;
}

/* Two-column layout */
.columns {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

/* Accordions */
details {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: rgba(4, 6, 13, 0.4); padding: 14px; margin-top: 14px;
}
details summary {
  cursor: pointer; font-weight: 600; font-size: 13.5px; color: var(--text);
  outline: none; list-style: none; display: flex; justify-content: space-between; align-items: center;
}
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; font-size: 16px; color: var(--cyan); }
details[open] summary::after { content: "−"; }

footer {
  text-align: center; padding: 40px 0; border-top: 1px solid var(--border);
  color: var(--text-faint); font-size: 12px; font-family: var(--mono);
}
footer span { display: block; color: var(--text-dim); margin-top: 4px; font-size: 11px; }

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; }
  .panel { padding: 20px; }
  .nav-inner { height: auto; padding: 12px 0; flex-wrap: wrap; }
}