/* ==========================================================================
   QPBOS — QUANTUM PROBABILITY BIASING OPERATING SYSTEM
   Design System & Laboratory Interface Stylesheet
   Architecture: Obsidian Vacuum, Titanium Lattice, Cryogenic Instrumentation
   Zero CDN, Self-Hosted woff2 Fonts, Zero External Dependencies
   ========================================================================== */

/* ── 1. FONTS SPECIFICATION ────────────────────────────────────────────── */

/* Syne Display — Bold / ExtraBold (Headers, Instruments, Masthead) */
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/syne-latin-ext-600.woff2') format('woff2');
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/syne-latin-600.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/syne-latin-ext-800.woff2') format('woff2');
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/syne-latin-800.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Inter — Clean Scientific Reading Copy */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/Inter-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/Inter-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/Inter-600-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/Inter-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* JetBrains Mono — Laboratory Code, Matrices & Telemetry */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Bold.woff2') format('woff2');
}

/* ── 2. DESIGN TOKENS & SYSTEM VARIABLES ───────────────────────────────── */

:root {
  /* Chromatic Foundation: Deep Obsidian Vacuum */
  --bg-space: #05070a;
  --bg-hull: #090d14;
  --bg-surface: #0e131d;
  --bg-surface-elevated: #141b27;
  --bg-glass: rgba(14, 19, 29, 0.75);
  --bg-glass-heavy: rgba(9, 13, 20, 0.92);

  /* Borders & Optical Hairlines */
  --rule-subtle: rgba(148, 163, 184, 0.12);
  --rule-medium: rgba(148, 163, 184, 0.22);
  --rule-accent: rgba(0, 229, 200, 0.35);
  --rule-amber: rgba(255, 176, 58, 0.35);

  /* Primary Scientific Spectrum */
  --cryo-cyan: #00e5c8;
  --cryo-cyan-dim: rgba(0, 229, 200, 0.15);
  --cryo-cyan-glow: rgba(0, 229, 200, 0.4);
  
  --photonic-amber: #ffb03a;
  --photonic-amber-dim: rgba(255, 176, 58, 0.15);
  --photonic-amber-glow: rgba(255, 176, 58, 0.45);

  --beryllium-blue: #60a5fa;
  --cadmium-crimson: #ff5263;
  --cadmium-crimson-dim: rgba(255, 82, 99, 0.15);
  
  --emerald-pass: #10b981;
  --emerald-pass-dim: rgba(16, 185, 129, 0.15);

  /* Text & Telemetry Contrast */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;

  /* Typography Stacks */
  --font-display: 'Syne', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Geometry & Grid */
  --container-max: 1240px;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --transition-fast: 160ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── 3. RESET & ACCESSIBLE FOUNDATION ──────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-space);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 229, 200, 0.07), transparent 70%),
    radial-gradient(circle at 90% 80%, rgba(96, 165, 250, 0.05), transparent 50%),
    var(--bg-space);
  position: relative;
}

/* Optical Grid Pattern Overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

/* Skip link for keyboard a11y */
.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  background: var(--cryo-cyan);
  color: #05070a;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-xs);
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: 16px;
  outline: 2px solid #fff;
}

/* Interactive focus indicators */
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cryo-cyan);
  outline-offset: 3px;
}

/* Typography & Structural Elements */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
}

p + p {
  margin-top: 1em;
}

strong, b {
  color: var(--text-primary);
  font-weight: 600;
}

code, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

a {
  color: var(--cryo-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: #fff;
}

/* ── 4. LAYOUT & GRID ARCHITECTURE ─────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

.section {
  padding-top: 96px;
  padding-bottom: 96px;
  border-bottom: 1px solid var(--rule-subtle);
  position: relative;
}

.section-header {
  margin-bottom: 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cryo-cyan);
  margin-bottom: 12px;
}
.section-tag::before {
  content: '//';
  opacity: 0.6;
}

.section-title {
  font-size: clamp(26px, 4vw, 38px);
  margin-bottom: 16px;
}

.section-lead {
  font-size: 16px;
  line-height: 1.65;
  max-width: 820px;
  color: var(--text-secondary);
}

/* ── 5. HEADER & LAB TELEMETRY MASTHEAD ────────────────────────────────── */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule-subtle);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.masthead-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-symbol {
  width: 32px;
  height: 32px;
  border: 1px solid var(--rule-accent);
  background: var(--cryo-cyan-dim);
  display: grid;
  place-items: center;
  color: var(--cryo-cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-xs);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #fff;
}

.brand-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.masthead-telemetry {
  display: flex;
  align-items: center;
  gap: 20px;
}

.telemetry-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 11px;
}

.telemetry-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--emerald-pass);
  box-shadow: 0 0 8px var(--emerald-pass);
  animation: pulse-live 2.4s ease-in-out infinite;
}

@keyframes pulse-live {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.masthead-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.nav-link:hover {
  color: var(--cryo-cyan);
}

.btn-telemetry {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: transparent;
  border: 1px solid var(--rule-accent);
  color: var(--cryo-cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-telemetry:hover {
  background: var(--cryo-cyan-dim);
  color: #fff;
  border-color: var(--cryo-cyan);
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--rule-subtle);
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
}

/* ── 6. HERO: 3D PHASE SPACE CONSOLE ───────────────────────────────────── */

.hero {
  padding-top: 48px;
  padding-bottom: 72px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 32px;
  align-items: stretch;
}

/* 3D Viewport Box */
.viewport-card {
  background: var(--bg-hull);
  border: 1px solid var(--rule-medium);
  border-radius: var(--radius-sm);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.viewport-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--rule-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
}

.viewport-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 600;
}

.viewport-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ctrl-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--rule-subtle);
  color: var(--text-secondary);
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.ctrl-btn:hover {
  color: var(--cryo-cyan);
  border-color: var(--rule-accent);
}
.ctrl-btn.active {
  background: var(--cryo-cyan-dim);
  color: var(--cryo-cyan);
  border-color: var(--cryo-cyan);
}

.canvas-container {
  position: relative;
  width: 100%;
  height: 520px;
  background: radial-gradient(circle at center, #0a101b 0%, #05070a 100%);
  cursor: grab;
}
.canvas-container:active {
  cursor: grabbing;
}

#lorenz-canvas, #fallback-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Fallback Notice Overlay (Hidden by default, shown if WebGL unavailable) */
.fallback-notice {
  display: none;
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--rule-subtle);
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--photonic-amber);
  border-radius: var(--radius-xs);
  pointer-events: none;
}

/* Legend in 3D viewport */
.viewport-legend {
  position: absolute;
  bottom: 12px;
  left: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  background: rgba(9, 13, 20, 0.85);
  padding: 8px 12px;
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-xs);
  pointer-events: none;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend-swatch {
  width: 12px;
  height: 2px;
  border-radius: 1px;
}
.swatch-base {
  background: var(--cryo-cyan);
  box-shadow: 0 0 6px var(--cryo-cyan);
}
.swatch-perturbed {
  background: var(--photonic-amber);
  box-shadow: 0 0 6px var(--photonic-amber);
}

/* Interactive Perturbation Slider in Viewport Footer */
.viewport-footer {
  padding: 12px 16px;
  background: var(--bg-surface);
  border-top: 1px solid var(--rule-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.slider-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.slider-group label {
  color: var(--text-secondary);
  white-space: nowrap;
}

.perturbation-slider {
  flex: 1;
  accent-color: var(--photonic-amber);
  cursor: pointer;
}

.slider-val {
  color: var(--photonic-amber);
  font-weight: 700;
  min-width: 60px;
}

/* Hero Telemetry & Narrative Sidebar */
.hero-narrative {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}

.hero-lead-box {
  background: var(--bg-hull);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  background: var(--cryo-cyan-dim);
  border: 1px solid var(--rule-accent);
  color: var(--cryo-cyan);
  border-radius: var(--radius-xs);
  margin-bottom: 14px;
}

.hero-h1 {
  font-size: 28px;
  line-height: 1.2;
  margin-bottom: 14px;
}

.hero-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* Live Phase Space Coordinates Card */
.telemetry-card {
  background: var(--bg-hull);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-sm);
  padding: 20px;
  font-family: var(--font-mono);
}

.card-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.coord-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.coord-cell {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  padding: 8px 10px;
  border-radius: var(--radius-xs);
}

.coord-label {
  font-size: 9px;
  color: var(--text-muted);
}

.coord-val {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2px;
}

.divergence-meter {
  border-top: 1px solid var(--rule-subtle);
  padding-top: 12px;
}

.meter-header {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  margin-bottom: 6px;
}

.meter-bar-track {
  height: 6px;
  background: var(--bg-surface);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.meter-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cryo-cyan), var(--photonic-amber), var(--cadmium-crimson));
  transition: width 0.1s linear;
}

/* ── 7. HARD FACT METRIC STRIP (EMPIRICAL BENCHMARKS) ──────────────────── */

.facts-strip {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.fact-card {
  background: var(--bg-hull);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.fact-card:hover {
  border-color: var(--rule-accent);
}

.fact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--cryo-cyan);
}

.fact-card.amber::before {
  background: var(--photonic-amber);
}

.fact-value {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 6px;
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.fact-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── 8. SECTION: ARCHITECTURAL HYBRID PIPELINE ─────────────────────────── */

.arch-visual {
  background: var(--bg-hull);
  border: 1px solid var(--rule-medium);
  border-radius: var(--radius-sm);
  padding: 32px;
  margin-bottom: 32px;
}

.arch-flow-diagram {
  display: grid;
  grid-template-columns: 1fr 140px 1fr;
  gap: 20px;
  align-items: center;
}

.node-box {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-sm);
  padding: 20px;
  position: relative;
}
.node-box.vps {
  border-top: 3px solid var(--beryllium-blue);
}
.node-box.gpu {
  border-top: 3px solid var(--cryo-cyan);
}

.node-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.node-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.node-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--rule-subtle);
  color: var(--text-secondary);
}

.node-specs {
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.node-specs li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.node-specs li::before {
  content: '▪';
  color: var(--cryo-cyan);
  font-size: 8px;
}

/* Reverse SSH Tunnel Channel in between */
.tunnel-channel {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 10px;
}

.tunnel-line {
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--beryllium-blue), var(--cryo-cyan));
  position: relative;
  margin: 12px 0;
}

.tunnel-line::after {
  content: '';
  position: absolute;
  top: -3px;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 8px var(--cryo-cyan);
  animation: packet-flow 2s linear infinite;
}

@keyframes packet-flow {
  0% { left: 0%; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

.tunnel-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--photonic-amber);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.tunnel-ports {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Technical Details Grid */
.details-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.detail-card {
  background: var(--bg-hull);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-sm);
  padding: 20px;
}

.detail-card-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-card-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── 9. SECTION: ROUTER & GUARDRAILS ───────────────────────────────────── */

.router-matrix {
  background: var(--bg-hull);
  border: 1px solid var(--rule-medium);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 28px;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: left;
  min-width: 680px;
}

.matrix-table th {
  background: var(--bg-surface);
  color: var(--text-muted);
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule-medium);
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 0.05em;
}

.matrix-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--rule-subtle);
  color: var(--text-secondary);
}

.matrix-table tr:hover td {
  background: rgba(255, 255, 255, 0.015);
}

.matrix-target {
  font-weight: 700;
  color: var(--cryo-cyan);
}

.badge-tag {
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-size: 10px;
  font-weight: 600;
}
.badge-guardrail {
  background: var(--cadmium-crimson-dim);
  border: 1px solid var(--cadmium-crimson);
  color: #ff808d;
}
.badge-ok {
  background: var(--emerald-pass-dim);
  border: 1px solid var(--emerald-pass);
  color: #34d399;
}

/* Guardrails Callout Box */
.guardrails-box {
  background: rgba(255, 82, 99, 0.04);
  border: 1px solid rgba(255, 82, 99, 0.25);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.guardrails-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--cadmium-crimson-dim);
  border: 1px solid var(--cadmium-crimson);
  display: grid;
  place-items: center;
  color: var(--cadmium-crimson);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.guardrails-content h3 {
  font-size: 16px;
  color: #fff;
  margin-bottom: 6px;
}

.guardrails-content p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ── 10. SECTION: EMPIRICAL BENCHMARKS & ENTROPY AUTOCORRELATION ───────── */

.bench-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: stretch;
}

.bench-card {
  background: var(--bg-hull);
  border: 1px solid var(--rule-medium);
  border-radius: var(--radius-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.bench-card-title {
  font-family: var(--font-display);
  font-size: 17px;
  color: #fff;
  margin-bottom: 6px;
}

.bench-card-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* Bar Chart Graphic */
.bench-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  justify-content: center;
}

.bar-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bar-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
}

.bar-label {
  color: var(--text-secondary);
}

.bar-timing {
  font-weight: 700;
  color: var(--cryo-cyan);
}

.bar-track {
  height: 12px;
  background: var(--bg-surface);
  border-radius: var(--radius-xs);
  overflow: hidden;
  border: 1px solid var(--rule-subtle);
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cryo-cyan), #38bdf8);
  border-radius: var(--radius-xs);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.bar-fill.mps {
  background: linear-gradient(90deg, var(--beryllium-blue), var(--photonic-amber));
}

/* Entropy Autocorrelation Interactive Visualizer */
.entropy-interactive {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.entropy-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg-surface);
  padding: 12px 16px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--rule-subtle);
  font-family: var(--font-mono);
  font-size: 12px;
}

.coupling-slider-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.entropy-readout-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  font-family: var(--font-mono);
  text-align: center;
}

.readout-box {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  padding: 10px;
  border-radius: var(--radius-xs);
}
.readout-box.highlight {
  border-color: var(--rule-amber);
  background: var(--photonic-amber-dim);
}

.readout-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.readout-val {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2px;
}

.scientific-caveat {
  background: rgba(255, 176, 58, 0.05);
  border-left: 3px solid var(--photonic-amber);
  padding: 12px 16px;
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  font-size: 12px;
  line-height: 1.6;
  color: #fed7aa;
}

/* ── 11. SECTION: PHASE STABILIZER (Q-LDPC BP-OSD) ──────────────────────── */

.stabilizer-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
}

.stabilizer-content p {
  font-size: 14px;
  line-height: 1.7;
}

.code-block-recess {
  background: var(--bg-hull);
  border: 1px solid var(--rule-medium);
  border-radius: var(--radius-sm);
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #cbd5e1;
  line-height: 1.6;
  overflow-x: auto;
}

.code-comment {
  color: #64748b;
}
.code-kw {
  color: #f43f5e;
}
.code-fn {
  color: #38bdf8;
}
.code-var {
  color: var(--cryo-cyan);
}
.code-num {
  color: var(--photonic-amber);
}

/* ── 12. SECTION: HIPOTEZA BADAWCZA I PETLA SAMOKALIBRACJI ─────────────── */

.hypothesis-wrapper {
  background: linear-gradient(180deg, rgba(14, 19, 29, 0.95), rgba(9, 13, 20, 0.95));
  border: 1px solid rgba(255, 176, 58, 0.3);
  border-radius: var(--radius-md);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

/* Wstazka narozna usunieta na zyczenie wlasciciela. */

.hypothesis-header {
  margin-bottom: 24px;
}

.hypothesis-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: var(--photonic-amber-dim);
  border: 1px solid var(--rule-amber);
  color: var(--photonic-amber);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-xs);
  margin-bottom: 12px;
}

.hypothesis-statement {
  font-size: 18px;
  line-height: 1.6;
  color: #fff;
  border-left: 3px solid var(--photonic-amber);
  padding-left: 20px;
  margin-bottom: 24px;
}

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.method-step {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-xs);
  padding: 20px;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--photonic-amber);
  font-weight: 700;
  margin-bottom: 8px;
}

.step-title {
  font-family: var(--font-display);
  font-size: 14px;
  color: #fff;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.epistemic-verdict-box {
  margin-top: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-xs);
  padding: 20px;
  font-size: 13px;
  line-height: 1.6;
}

/* ── 13. SECTION: POZA LABORATORIUM // PRZYPIS KULTUROWY (MUSIC FOOTNOTE) ── */

.cultural-footnote {
  background: var(--bg-hull);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-sm);
  padding: 28px 32px;
  margin-top: 32px;
}

.footnote-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.footnote-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footnote-title::before {
  content: '§';
  color: var(--cryo-cyan);
}

.tracklist-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.track-item {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-xs);
  padding: 10px 14px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.track-item:hover {
  border-color: var(--rule-accent);
  color: #fff;
}

.track-index {
  color: var(--cryo-cyan);
  font-weight: 700;
  font-size: 10px;
}

.playlist-external-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 16px;
  transition: color var(--transition-fast);
}
.playlist-external-link:hover {
  color: var(--photonic-amber);
}

/* ── 14. FOOTER & SCIENTIFIC IMPRINT ───────────────────────────────────── */

.site-footer {
  padding: 48px 0;
  border-top: 1px solid var(--rule-subtle);
  background: var(--bg-hull);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* ── 15. RESPONSIVE BREAKPOINTS (DOWN TO 360PX) ────────────────────────── */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .canvas-container {
    height: 440px;
  }
  .arch-flow-diagram {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .tunnel-channel {
    transform: rotate(90deg);
    padding: 16px 0;
  }
  .bench-grid {
    grid-template-columns: 1fr;
  }
  .facts-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .stabilizer-layout {
    grid-template-columns: 1fr;
  }
  .methodology-grid {
    grid-template-columns: 1fr;
  }
  .tracklist-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .details-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .masthead-nav {
    display: none;
  }
  .masthead-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: var(--bg-hull);
    border-bottom: 1px solid var(--rule-medium);
    padding: 20px;
    gap: 16px;
  }
  .mobile-toggle {
    display: block;
  }
  .canvas-container {
    height: 360px;
  }
  .facts-strip {
    grid-template-columns: 1fr;
  }
  .tracklist-grid {
    grid-template-columns: 1fr;
  }
  .hypothesis-wrapper {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }
  .canvas-container {
    height: 300px;
  }
  .viewport-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .viewport-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .coord-grid {
    grid-template-columns: 1fr;
  }
  .entropy-controls {
    flex-direction: column;
    align-items: flex-start;
  }
  .entropy-readout-strip {
    grid-template-columns: 1fr;
  }
}

/* ── 16. PREFERS-REDUCED-MOTION (ACCESSIBILITY DEGRADATION) ─────────────── */

@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;
  }
  .tunnel-line::after {
    animation: none;
    left: 50%;
  }
  .telemetry-pulse {
    animation: none;
  }
}

/* ── REFINEMENTS FOR ULTRA-CLEAN MOBILE (<640px) ───────────────────────── */

@media (max-width: 640px) {
  .masthead-telemetry {
    display: none;
  }
  .viewport-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    width: 100%;
    margin-top: 6px;
  }
  .ctrl-btn {
    text-align: center;
    padding: 6px 4px;
  }
  .hero-h1 {
    font-size: 22px;
    word-break: break-word;
  }
}

/* --- Poprawki po ogledzinach w przegladarce --- */
/* 1. Chip statusu nachodzil na nawigacje na szerokich ekranach */
.masthead-telemetry { flex: 0 0 auto; min-width: 0; }
.telemetry-chip { white-space: nowrap; }
.masthead-nav { flex: 1 1 auto; min-width: 0; }
@media (max-width: 1400px) {
    .masthead-telemetry { display: none; }   /* nawigacja ma pierwszenstwo */
}
/* 2. Wartosc epsilon byla ucinana przy waskim ekranie */
.slider-val { flex: 0 0 auto; white-space: nowrap; margin-left: 8px; }
@media (max-width: 820px) {
    .slider-val { font-size: 13px; }
}

/* Masthead: chip statusu nachodzil na nawigacje — wymuszamy realny odstep i brak kurczenia */
.masthead-inner { gap: 28px; flex-wrap: nowrap; }
.masthead-inner > * { min-width: 0; }
/* Chip nie moze sie kurczyc — przy 0 1 auto tekst byl ucinany na '(RTX 5070)'.
   Ponizej 1700px chip jest i tak ukryty, wiec nawigacja nie traci miejsca. */
.masthead-telemetry { flex: 0 0 auto; overflow: visible; }
.masthead-nav { flex: 0 1 auto; }
@media (max-width: 1700px) { .masthead-telemetry { display: none; } }

/* ── 17. LANGUAGE SWITCHER ─────────────────────────────────────────────── */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-xs);
  flex-shrink: 0;
}
.lang-option.active {
  color: var(--cryo-cyan);
  font-weight: 700;
}
.lang-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.lang-link:hover {
  color: var(--text-primary);
}
.lang-sep {
  color: var(--text-dim);
  user-select: none;
}

/* ── 18. DISCRETE LABORATORY AUDIO PLAYER ──────────────────────────────── */
.audio-player-card {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin-top: 24px;
  max-width: 860px;
}
.player-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}
.player-title-box {
  display: flex;
  align-items: center;
  gap: 10px;
}
.player-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--photonic-amber);
  border: 1px solid var(--rule-amber);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}
.player-current-track {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.player-status-msg {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cadmium-crimson);
  margin-left: 8px;
}
.player-time-display {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}
.player-controls-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.player-btn-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.player-btn {
  background: var(--bg-hull);
  border: 1px solid var(--rule-subtle);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition-fast);
}
.player-btn:hover {
  border-color: var(--rule-accent);
  color: var(--cryo-cyan);
  background: var(--cryo-cyan-dim);
}
.player-btn.play-btn {
  width: 42px;
  height: 36px;
  border-color: var(--rule-accent);
  color: var(--cryo-cyan);
}
.player-btn.play-btn.playing {
  border-color: var(--photonic-amber);
  color: var(--photonic-amber);
  background: var(--photonic-amber-dim);
}
.player-seek-group {
  flex: 1;
  min-width: 140px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.player-seek-bar {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-hull);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
  accent-color: var(--cryo-cyan);
}
.player-volume-group {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 120px;
}
.player-volume-bar {
  width: 80px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-hull);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  accent-color: var(--photonic-amber);
}

.player-playlist {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px solid var(--rule-subtle);
  padding-top: 14px;
  margin-top: 14px;
}
.track-item {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-hull);
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-size: 13px;
  transition: all var(--transition-fast);
}
.track-item:hover {
  border-color: var(--rule-subtle);
  background: var(--bg-surface-elevated);
}
.track-item.active {
  border-color: var(--rule-accent);
  background: var(--cryo-cyan-dim);
}
.track-item.active .track-name {
  color: var(--cryo-cyan);
  font-weight: 600;
}
.track-index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  width: 28px;
}
.track-name {
  flex: 1;
  color: var(--text-primary);
}
.track-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  margin-right: 12px;
}
.track-badge.badge-missing {
  color: var(--photonic-amber);
  border: 1px solid var(--rule-amber);
  padding: 1px 5px;
  border-radius: 2px;
}
.track-dur {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* ── 19. HERMES ADVISOR & SCIENTIFIC ARCHITECTURE ADDITIONS ─────────────── */
.hermes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
@media (max-width: 900px) {
  .hermes-grid {
    grid-template-columns: 1fr;
  }
}
.hermes-card {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  padding: 20px;
  border-radius: var(--radius-xs);
}
.hermes-card.highlight {
  border-color: var(--rule-accent);
}
.hermes-mode-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cryo-cyan);
  margin-bottom: 8px;
}
.math-block {
  padding: 14px 18px;
  background: var(--bg-hull);
  border: 1px solid var(--rule-subtle);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-primary);
  margin: 14px 0;
  overflow-x: auto;
  line-height: 1.6;
}
.math-block code {
  color: var(--cryo-cyan);
}
.math-block.accent {
  border-left: 3px solid var(--cryo-cyan);
}
.math-block.amber {
  border-left: 3px solid var(--photonic-amber);
}

/* Alternative Approaches A-D Grid */
.approaches-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}
@media (max-width: 820px) {
  .approaches-grid {
    grid-template-columns: 1fr;
  }
}
.approach-card {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  padding: 20px;
  border-radius: var(--radius-xs);
}
.approach-card.chosen {
  border-color: var(--emerald-pass);
  background: linear-gradient(180deg, var(--emerald-pass-dim) 0%, var(--bg-surface) 100%);
}
.approach-card.rejected {
  border-color: rgba(255, 82, 99, 0.25);
}
.approach-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.approach-badge.chosen {
  background: var(--emerald-pass);
  color: #05070a;
}
.approach-badge.rejected {
  background: rgba(255, 82, 99, 0.2);
  color: var(--cadmium-crimson);
  border: 1px solid rgba(255, 82, 99, 0.3);
}

/* Self-calibration Loop Card */
.calibration-loop-card {
  background: var(--bg-surface);
  border: 1px solid var(--rule-accent);
  padding: 24px;
  border-radius: var(--radius-xs);
  margin: 24px 0;
  position: relative;
}
.calibration-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}
@media (max-width: 820px) {
  .calibration-steps-grid {
    grid-template-columns: 1fr;
  }
}

/* ── 20. MOBILE REFINEMENTS FOR AUDIO PLAYER & CARDS (≤640px and ≤360px) ── */
@media (max-width: 640px) {
  .audio-player-card {
    padding: 16px 12px;
  }
  .player-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .player-controls-row {
    gap: 10px;
  }
  .player-seek-group {
    min-width: 100%;
    order: 3;
    margin-top: 6px;
  }
  .player-volume-group {
    width: auto;
  }
  .track-item {
    padding: 8px 6px;
    font-size: 12px;
  }
  .track-index {
    width: 22px;
  }
  .calibration-loop-card {
    padding: 16px 12px;
  }
  .approach-card {
    padding: 16px 12px;
  }
  .hermes-card {
    padding: 16px 12px;
  }
}

/* Masthead: przy szerokosci kontenera 1240px siedem pozycji nawigacji + chip
   statusu + przelacznik jezyka nie miescily sie (704px potrzebne, 659px dostepne)
   i "Audio" wchodzilo pod przelacznik PL/EN. Wezszy odstep domyka bilans. */
/* Dziewiec pozycji nawigacji musi zmiescic sie w kontenerze 1240px. Bez nowrap
   najdluzsze etykiety EN wypychaly "BP-OSD" do zawiniecia na dwie linie. */
.masthead-nav { gap: 10px; }
.masthead-nav .nav-link { white-space: nowrap; }
@media (max-width: 1700px) { .masthead-nav { gap: 24px; } }

/* ── MOBILE: naprawa rozjezdzajacego sie ukladu ────────────────────────────
   Pasek statusu routera mial siatke zapisana stylem inline:
   `grid-template-columns: 1fr 140px 180px` + gap 16px. Dwie sztywne kolumny
   (320px) plus odstepy (32px) nie mieszcza sie w kontenerze 308px na ekranie
   390px — ostatnia kolumna konczyla sie na 494px i to ona rozciagala layout
   viewport, przez co przegladarka pomniejszala CALA strone. Styl inline bije
   kazda regule arkusza, wiec definicja musiala przeniesc sie tutaj.        */
.router-status-grid {
  background: var(--bg-surface);
  border: 1px solid var(--rule-subtle);
  padding: 16px;
  border-radius: var(--radius-xs);
  display: grid;
  grid-template-columns: 1fr 140px 180px;
  gap: 16px;
  align-items: center;
}
.router-status-grid > * { min-width: 0; }

@media (max-width: 760px) {
  .router-status-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  /* Etykieta suwaka ma `white-space: nowrap`, wiec nie potrafila sie skurczyc
     i wypychala rzad poza 390px. Na waskim ekranie lamiemy rzad na dwie linie. */
  .slider-group {
    flex-wrap: wrap;
    min-width: 0;
  }
  .slider-group label { white-space: normal; }
  /* Przycisk telemetrii ma dluga etykiete ("Symuluj Rozlaczenie Wezla GPU").
     Jako inline-flex nie lamal sie i przy 320px wypychal layout do 392px. */
  .btn-telemetry {
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
    font-size: 11px;
    padding: 7px 10px;
  }
}

/* Zaden przycisk nie moze byc szerszy od swojego kontenera. */
.btn-telemetry { max-width: 100%; }