/* ==========================================================================
   KHORA SYSTEMS — CORE DESIGN SYSTEM & TOKENS
   Visual Art Direction: Swiss Architectural Precision × Photonic Physics
   Engineering: Emil Kowalski UI Polish & Performance
   ========================================================================== */

:root {
  /* Surface & Base Palette — Strict Obsidian */
  --bg-void: #050608;
  --bg-obsidian: #080a0d;
  --bg-surface: #0e1116;
  --bg-surface-elevated: #141820;
  --bg-surface-active: #1c222c;
  --bg-glass: rgba(14, 17, 22, 0.78);

  /* Hairlines & Borders — Platinum & Titanium */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.22);
  --border-focus: rgba(255, 94, 30, 0.6);

  /* Typography */
  --text-primary: #f5f6f8;
  --text-secondary: #8e95a2;
  --text-muted: #565d6a;
  --text-inverse: #050608;

  --font-display: 'Syne', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Laser Accent — Single Intentional Spectrum (1550nm Laser Amber) */
  --laser-primary: #ff5e1e;
  --laser-bright: #ff7a3d;
  --laser-dim: rgba(255, 94, 30, 0.14);
  --laser-glow: rgba(255, 94, 30, 0.32);
  --laser-beam: #ffa270;

  /* Layout & Geometry */
  --header-height: 68px;
  --max-width: 1360px;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Emil Kowalski Custom Curves */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --duration-fast: 160ms;
  --duration-normal: 240ms;
  --duration-slow: 400ms;
}

/* Reset & Primitives */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-void);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100dvh;
  overflow-x: hidden;
  position: relative;
  line-height: 1.5;
  background: radial-gradient(circle at 50% 0%, rgba(255, 94, 30, 0.04) 0%, transparent 60%),
              var(--bg-void);
}

::selection {
  background: var(--laser-primary);
  color: #ffffff;
}

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

/* --------------------------------------------------------------------------
   TYPOGRAPHY SYSTEM
   -------------------------------------------------------------------------- */

.display-title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6.5vw, 5.25rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--text-primary);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.body-lead {
  font-size: clamp(1.05rem, 1.3vw, 1.2rem);
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 58ch;
}

.body-standard {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--laser-bright);
}

.mono-telemetry {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   LAYOUT UTILITIES
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.25rem, 4vw, 3rem);
  padding-right: clamp(1.25rem, 4vw, 3rem);
}

.section-padding {
  padding-top: clamp(4.5rem, 9vw, 8rem);
  padding-bottom: clamp(4.5rem, 9vw, 8rem);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

/* --------------------------------------------------------------------------
   NAVIGATION (Strict 68px Single-Line Desktop)
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
  transition: transform var(--duration-normal) var(--ease-out);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  position: relative;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-title span {
  color: var(--laser-primary);
}

.header-telemetry-pill {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.8rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

@media (min-width: 1100px) {
  .header-telemetry-pill {
    display: flex;
  }
}

.status-indicator-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--laser-primary);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

@media (min-width: 860px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--laser-primary);
  transition: width var(--duration-fast) var(--ease-out);
}

.nav-link:hover::after {
  width: 100%;
}

.header-cta-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   BUTTONS & TACTILE INTERACTION STATES (Emil Kowalski Philosophy)
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--laser-primary);
  color: #ffffff;
  border-color: var(--laser-bright);
  box-shadow: 0 2px 14px var(--laser-glow);
}

.btn-primary:hover {
  background: var(--laser-bright);
  box-shadow: 0 4px 20px rgba(255, 94, 30, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

/* --------------------------------------------------------------------------
   SECTION 1: ASYMMETRIC HERO & PHOTONIC WAVEFIELD CANVAS
   -------------------------------------------------------------------------- */

.hero-section {
  position: relative;
  min-height: 100dvh;
  padding-top: calc(var(--header-height) + 1.5rem);
  padding-bottom: 3rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

@media (min-width: 980px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.hero-meta-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.hero-wavelength-selector {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.4rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  width: fit-content;
  margin-top: 0.5rem;
}

.wl-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  padding: 0 0.5rem;
  text-transform: uppercase;
}

.wl-btn {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.wl-btn:hover {
  color: var(--text-primary);
}

.wl-btn:active {
  transform: scale(0.96);
}

.wl-btn.active {
  background: rgba(255, 94, 30, 0.16);
  border-color: var(--laser-primary);
  color: var(--laser-bright);
}

/* Wavefield Interactive Core Viewport */
.hero-canvas-frame {
  position: relative;
  aspect-ratio: 16 / 13;
  width: 100%;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  overflow: hidden;
  box-shadow: 0 20px 45px -10px rgba(0, 0, 0, 0.8),
              inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

#photonic-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.canvas-overlay-ui {
  position: absolute;
  inset: 0;
  pointer-events: none;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.canvas-telemetry-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.canvas-badge {
  pointer-events: auto;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  background: rgba(8, 10, 13, 0.85);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
}

.canvas-telemetry-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.canvas-hud-metric {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--text-muted);
}

.canvas-hud-metric strong {
  color: var(--laser-bright);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   SECTION 2: SUBSTRATE ARCHITECTURE MATRIX (Interactive Die Layer Slicer)
   -------------------------------------------------------------------------- */

.matrix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 980px) {
  .matrix-grid {
    grid-template-columns: 1fr 1.25fr;
    gap: 3.5rem;
  }
}

.layer-nav-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.layer-tab-card {
  padding: 1.25rem 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.layer-tab-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-surface-elevated);
}

.layer-tab-card:active {
  transform: scale(0.98);
}

.layer-tab-card.active {
  border-color: var(--laser-primary);
  background: rgba(255, 94, 30, 0.05);
}

.layer-tab-card.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--laser-primary);
}

.layer-tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.layer-tab-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.layer-tab-card.active .layer-tab-num {
  color: var(--laser-primary);
}

.layer-tab-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.layer-tab-summary {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Layer Inspection Visualizer */
.matrix-visualizer-container {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
}

.visualizer-image-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  width: 100%;
  overflow: hidden;
  background: #000;
}

.visualizer-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.visualizer-telemetry-panel {
  padding: 1.5rem;
  background: var(--bg-obsidian);
  border-top: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1.25rem;
}

.spec-metric-block {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.spec-metric-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.spec-metric-val {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.spec-metric-val span {
  font-size: 0.75rem;
  color: var(--laser-bright);
  margin-left: 2px;
}

/* --------------------------------------------------------------------------
   SECTION 3: DETERMINISTIC LATENCY BENCH (Interactive Oscilloscope Simulator)
   -------------------------------------------------------------------------- */

.bench-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  margin-top: 2.5rem;
}

.bench-controls-row {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .bench-controls-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.bench-slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
  max-width: 440px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.slider-label-row strong {
  color: var(--laser-bright);
}

.bench-range-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-xs);
  outline: none;
}

.bench-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--laser-primary);
  cursor: pointer;
  box-shadow: 0 0 10px var(--laser-primary);
  transition: transform var(--duration-fast) var(--ease-out);
}

.bench-range-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.bench-comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 860px) {
  .bench-comparison-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.oscilloscope-box {
  background: var(--bg-obsidian);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  position: relative;
}

.oscilloscope-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
}

.oscilloscope-canvas-wrapper {
  position: relative;
  aspect-ratio: 16 / 9;
  width: 100%;
  background: #040507;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  overflow: hidden;
}

.oscilloscope-canvas-wrapper canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.bench-stat-row {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   SECTION 4: ASYMMETRIC FOUNDRY EDITORIAL GALLERY
   -------------------------------------------------------------------------- */

.foundry-editorial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

@media (min-width: 900px) {
  .foundry-editorial-grid {
    grid-template-columns: 1.4fr 1fr;
  }
}

.foundry-hero-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.foundry-hero-img-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  width: 100%;
  background: #000;
}

.foundry-hero-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.foundry-card-body {
  padding: 1.75rem;
}

.foundry-side-col {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.foundry-mini-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.foundry-mini-card .foundry-img-wrap {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.foundry-mini-card .foundry-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --------------------------------------------------------------------------
   SECTION 5: AUTONOMOUS INTEGRATION BENTO (Background Diversity)
   -------------------------------------------------------------------------- */

.bento-grid-diverse {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
}

@media (min-width: 768px) {
  .bento-grid-diverse {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .bento-cell-span-2 {
    grid-column: span 2;
  }
}

.bento-cell {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  min-height: 280px;
}

/* Distinct visual variation for bento cells (Anti-AI-Default) */
.bento-cell-laser {
  background: radial-gradient(circle at top right, rgba(255, 94, 30, 0.12) 0%, var(--bg-surface) 70%);
  border-color: rgba(255, 94, 30, 0.25);
}

.bento-cell-diagram {
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

.bento-cell-darkmonolith {
  background: var(--bg-obsidian);
  border-color: var(--border-medium);
}

.bento-big-stat {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
  margin: 1.5rem 0 0.5rem;
  letter-spacing: -0.03em;
}

.bento-big-stat span {
  font-size: 1.5rem;
  color: var(--laser-primary);
}

/* --------------------------------------------------------------------------
   SECTION 6: INDUSTRIAL RFQ & INQUIRIES CONSOLE
   -------------------------------------------------------------------------- */

.console-terminal-wrapper {
  max-width: 880px;
  margin: 3rem auto 0;
  background: var(--bg-obsidian);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.9);
  overflow: hidden;
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.25rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.t-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.t-dot.active {
  background: var(--laser-primary);
}

.terminal-form {
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .form-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.form-input, .form-select, .form-textarea {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--laser-primary);
  box-shadow: 0 0 0 1px var(--laser-primary);
}

.form-textarea {
  resize: vertical;
  min-height: 90px;
}

.terminal-status-banner {
  padding: 0.9rem 1.25rem;
  background: rgba(255, 94, 30, 0.08);
  border: 1px solid var(--laser-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--laser-bright);
}

/* --------------------------------------------------------------------------
   FOOTER (Strict Obsidian Monolith)
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--bg-void);
  border-top: 1px solid var(--border-subtle);
  padding: clamp(3.5rem, 6vw, 5rem) 0 2rem;
}

.footer-main-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 860px) {
  .footer-main-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.footer-nav-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-link {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-link:hover {
  color: var(--text-primary);
}

.footer-bottom-bar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .footer-bottom-bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* --------------------------------------------------------------------------
   ACCESSIBILITY & REDUCED MOTION
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .status-indicator-dot {
    animation: none;
  }
}

/* --------------------------------------------------------------------------
   MOBILE VIEWPORT ADAPTATION (<= 768px)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  body {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }

  .site-header {
    height: 60px;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  .brand-title {
    font-size: 0.95rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 44px;
    justify-content: center;
  }

  .hero-wavelength-selector {
    flex-wrap: wrap;
    gap: 6px;
  }

  .wl-btn {
    min-height: 40px;
    padding: 6px 14px;
  }

  /* Oscilloscope and Canvas responsiveness */
  .oscilloscope-canvas-wrapper canvas {
    width: 100% !important;
    max-width: 100%;
  }

  /* Prevent iOS zoom on form elements */
  .form-input, .form-select, .form-textarea {
    font-size: 16px !important;
    min-height: 46px;
  }

  .form-textarea {
    min-height: 90px;
  }

  /* Layer tab cards */
  .layer-tab-card {
    padding: 1rem;
    min-height: 44px;
  }
}