/**
 * OpenStudio — "Signal" Design System
 * A broadcast studio that feels like the future of underground broadcasting.
 */

/* ==========================================
   FONTS — self-hosted variable woff2, latin subset
   ========================================== */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('../fonts/inter.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: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/jetbrains-mono.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: 'Space Grotesk';
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url('../fonts/space-grotesk.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;
}

/* ==========================================
   DESIGN TOKENS
   ========================================== */

:root {
  /* VOID — the silence before signal */
  --void:            #0a0a0f;
  --surface:         #12121a;
  --surface-raised:  #1a1a24;
  --surface-elevated:#232736;
  --border:          #2a2a3a;
  --border-strong:   #3a3f54;

  /* SIGNAL — the broadcast */
  --signal-red:      #e23636;
  --signal-red-glow: rgba(226,54,54,0.15);
  --signal-amber:    #d4a053;
  --signal-amber-glow: rgba(212,160,83,0.12);
  --signal-hot:      #ff4444;

  /* DATA — cold information */
  --data-cyan:       #00e5ff;
  --data-cyan-dim:   #00b8d4;
  --data-cyan-glow:  rgba(0,229,255,0.12);

  /* TEXT — warm white, not blue-white */
  --text-primary:    #e8e4df;
  --text-secondary:  #8a8680;
  --text-tertiary:   #5a5650;
  --text-ghost:      #3a3630;

  /* STATUS */
  --status-connected:  #4a8a6b;
  --status-connecting: #d4a053;
  --status-error:      #e23636;

  /* METER */
  --meter-safe:      #d4a053;
  --meter-hot:       #e23636;
  --meter-bg:        #0a0a0f;
  --meter-ghost:     rgba(255,255,255,0.03);

  /* TYPOGRAPHY */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --text-xs: 0.6875rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-lg: 1.0625rem;
  --text-xl: 1.25rem;

  /* SPACING */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* LAYOUT */
  --max-width: 1200px;
  --header-height: 3.25rem;
}

/* ==========================================
   BASE / ATMOSPHERE
   ========================================== */

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--void);
  background-image:
    /* Scan lines */
    repeating-linear-gradient(0deg, transparent, transparent 2px,
      rgba(255,255,255,0.008) 2px, rgba(255,255,255,0.008) 4px),
    /* Vignette */
    radial-gradient(ellipse at 50% 50%, transparent 50%, rgba(0,0,0,0.4) 100%);
  transition: background-image 1.5s ease;
}

/* Noise texture overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ON AIR signal line at top of viewport */
body.broadcasting::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--signal-red);
  z-index: 1000;
  animation: signal-bar-ignite 400ms ease-out forwards, signal-bar-breathe 3s ease-in-out 400ms infinite;
}

@keyframes signal-bar-ignite {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

@keyframes signal-bar-breathe {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}

/* Red wash flash on go-live */
@keyframes go-live-flash {
  0%   { box-shadow: inset 0 0 120px rgba(226,54,54,0.15); }
  100% { box-shadow: inset 0 0 0 transparent; }
}

body.broadcasting {
  animation: go-live-flash 1.5s ease-out forwards;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 2px,
      rgba(255,255,255,0.008) 2px, rgba(255,255,255,0.008) 4px),
    radial-gradient(ellipse at 50% 50%, transparent 50%, rgba(60,10,10,0.3) 100%);
}

/* ==========================================
   ACCESSIBILITY
   ========================================== */

:focus-visible {
  outline: 2px solid var(--signal-amber);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================
   HEADER — SIGNAL STATUS BAR
   ========================================== */

header {
  height: var(--header-height);
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: var(--space-4);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: border-color 0.6s ease;
}

body.broadcasting header {
  border-bottom-color: var(--signal-red);
}

header h1 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin: 0;
  line-height: 1;
}

.wordmark-accent {
  color: var(--signal-amber);
  transition: color 0.6s ease, text-shadow 0.6s ease;
}

body.broadcasting .wordmark-accent {
  color: var(--signal-red);
  text-shadow: 0 0 20px var(--signal-red-glow);
}

.tagline {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-style: italic;
  color: var(--text-ghost);
  letter-spacing: 0.2em;
  text-transform: lowercase;
  align-self: center;
}

.header-right {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

#status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--status-error);
  animation: pulse-status 2s ease-in-out infinite;
  flex-shrink: 0;
}

#status.connecting::before {
  background-color: var(--status-connecting);
}

#status.connected::before {
  background-color: var(--status-connected);
  animation: none;
}

@keyframes pulse-status {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

.session-info {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: 0.03em;
}

/* ==========================================
   MAIN LAYOUT — CONTROL SURFACE
   ========================================== */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-6);
  display: grid;
  grid-template-rows: 1fr auto auto auto;
  grid-template-areas: "stage" "bus" "transport" "deck";
  gap: var(--space-6);
  min-height: calc(100vh - var(--header-height));
}

/* ==========================================
   STAGE — PARTICIPANT CARDS
   ========================================== */

.stage {
  grid-area: stage;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
  align-content: start;
}

/* Empty state */
#participants:empty::after {
  content: 'The frequency is clear.';
  grid-column: 1 / -1;
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--text-ghost);
  padding: var(--space-12);
  letter-spacing: 0.04em;
}

/* Channel strip cards */
.participant-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: 3px;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Card entrance animation */
.participant-card {
  animation: tune-in 500ms ease-out both;
}

@keyframes tune-in {
  from {
    opacity: 0;
    transform: translateY(8px);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

/* Card exit animation */
.participant-card.leaving {
  animation: tune-out 400ms ease-in forwards;
}

@keyframes tune-out {
  to {
    opacity: 0;
    transform: scale(0.95);
    filter: blur(4px);
  }
}

/* Broadcasting state — red left accent */
body.broadcasting .participant-card {
  border-left-color: var(--signal-red);
}

/* Speaking state */
.participant-card.speaking {
  border-color: var(--signal-amber);
  box-shadow: 0 0 12px var(--signal-amber-glow);
}

.participant-card:hover {
  border-color: var(--border-strong);
}

/* Avatar */
.participant-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--surface-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--signal-amber);
  text-transform: uppercase;
  border: 2px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.participant-card.speaking .participant-avatar {
  border-color: var(--signal-amber);
  box-shadow: 0 0 8px var(--signal-amber-glow);
}

/* Muted avatar dims */
.participant-card.is-muted .participant-avatar {
  opacity: 0.4;
}

.participant-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-align: center;
  color: var(--text-primary);
}

/* Role badges */
.participant-role {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 2px;
  border: 1px solid var(--text-tertiary);
  color: var(--text-secondary);
}

.participant-role.role-host {
  color: var(--signal-red);
  border-color: var(--signal-red);
}

.participant-role.role-ops {
  color: var(--signal-amber);
  border-color: var(--signal-amber);
}

.participant-role.role-guest {
  color: var(--text-secondary);
  border-color: var(--text-tertiary);
}

/* Per-participant level meter */
.participant-level-meter {
  width: 100%;
  height: 4px;
  border-radius: 1px;
  display: block;
  margin-top: var(--space-1);
}

.participant-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.participant-status .icon {
  width: 1rem;
  height: 1rem;
}

/* Participant controls (gain slider, mute button) */
.participant-controls {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-2) 0;
}

.mute-button {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  min-width: auto;
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s ease;
}

.mute-button:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

/* Self-muted state */
.mute-button.self-muted {
  background-color: transparent;
  color: var(--signal-amber);
  border-color: var(--signal-amber);
}

.mute-button.self-muted:hover {
  background-color: var(--signal-amber-glow);
}

/* Producer-muted state */
.mute-button.producer-muted {
  background-color: transparent;
  color: var(--signal-red);
  border-color: var(--signal-red);
  cursor: not-allowed;
}

.mute-button.producer-muted:hover {
  background-color: var(--signal-red-glow);
}

.gain-control {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
}

/* Gain slider — fader style */
.gain-slider {
  flex: 1;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 1px;
  outline: none;
  cursor: pointer;
}

.gain-slider:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Slider thumb — rectangular fader */
.gain-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 22px;
  border-radius: 2px;
  background: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s ease;
}

.gain-slider::-webkit-slider-thumb:hover {
  background: var(--signal-amber);
}

.gain-slider:disabled::-webkit-slider-thumb {
  background: var(--text-ghost);
  cursor: not-allowed;
}

/* Firefox */
.gain-slider::-moz-range-thumb {
  width: 14px;
  height: 22px;
  border: none;
  border-radius: 2px;
  background: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s ease;
}

.gain-slider::-moz-range-thumb:hover {
  background: var(--signal-amber);
}

.gain-slider:disabled::-moz-range-thumb {
  background: var(--text-ghost);
  cursor: not-allowed;
}

.gain-slider::-moz-range-track {
  background: var(--border);
  border-radius: 1px;
}

.gain-value {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-tertiary);
  min-width: 36px;
  text-align: right;
}

/* ==========================================
   SIGNAL OUTPUT — PROGRAM BUS
   ========================================== */

.signal-output {
  grid-area: bus;
}

.meter-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

.meter-container {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.waveform-canvas {
  width: 100%;
  height: 48px;
  display: block;
  border-radius: 2px;
}

#volume-meter {
  width: 100%;
  height: 24px;
  display: block;
  border-radius: 2px;
}

/* ==========================================
   TRANSPORT — BROADCAST CONTROLS
   ========================================== */

.transport {
  grid-area: transport;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: var(--space-3) var(--space-4);
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

/* Base button reset */
button {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 2px;
  padding: var(--space-2) var(--space-5);
  transition: all 0.2s ease;
  min-width: 0;
  cursor: pointer;
}

button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Broadcast button — the primary control */
.btn-broadcast {
  background-color: transparent;
  color: var(--signal-amber);
  border: 2px solid var(--signal-amber);
  padding: var(--space-3) var(--space-8);
  font-size: var(--text-sm);
  position: relative;
}

.btn-broadcast:not(:disabled):hover {
  background-color: var(--signal-amber-glow);
  box-shadow: 0 0 20px var(--signal-amber-glow);
}

.btn-broadcast:not(:disabled):active {
  transform: scale(0.98);
}

/* End broadcast — understated to prevent accidental stops */
.btn-end {
  background-color: transparent;
  color: var(--text-tertiary);
  border: 1px solid var(--border);
}

.btn-end:not(:disabled):hover {
  color: var(--signal-red);
  border-color: var(--signal-red);
}

/* Ghost buttons */
.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:not(:disabled):hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

/* Mute button states in transport */
#toggle-mute.muted {
  color: var(--signal-amber);
  border-color: var(--signal-amber);
}

/* Record button with dot indicator */
.btn-record {
  position: relative;
  padding-left: calc(var(--space-5) + 10px);
}

.btn-record::before {
  content: '';
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--text-tertiary);
  transition: background-color 0.2s ease;
}

.btn-record.recording::before {
  background-color: var(--signal-red);
  animation: rec-blink 1s steps(1) infinite;
}

@keyframes rec-blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* Stream button */
.btn-stream.streaming {
  color: var(--status-connected);
  border-color: var(--status-connected);
}

/* ==========================================
   DECK PANELS — Collapsible Sections
   ========================================== */

.deck-panel {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.deck-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  user-select: none;
}

.deck-header:hover {
  background-color: var(--surface-raised);
}

.deck-summary {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.deck-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
}

.deck-toggle {
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  padding: var(--space-1);
  cursor: pointer;
  transition: transform 0.3s ease;
  min-width: 0;
  letter-spacing: 0;
  text-transform: none;
}

.deck-panel.collapsed .deck-toggle {
  transform: rotate(-90deg);
}

.deck-body {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border);
  transition: max-height 0.3s ease, opacity 0.3s ease;
  max-height: 500px;
  opacity: 1;
}

.deck-panel.collapsed .deck-body {
  max-height: 0;
  opacity: 0;
  padding: 0 var(--space-4);
  border-top: none;
  overflow: hidden;
}

/* Recording indicator */
.recording-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-ghost);
  transition: background-color 0.2s ease;
  flex-shrink: 0;
}

.recording-indicator.active {
  background-color: var(--signal-red);
  animation: rec-blink 1s steps(1) infinite;
}

.recording-timer {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
}

.recording-timer.active {
  color: var(--signal-red);
  text-shadow: 0 0 8px var(--signal-red-glow);
}

.recording-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.recording-tracks {
  margin-top: var(--space-3);
}

.recording-tracks h4 {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
  color: var(--text-tertiary);
}

.recording-track-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border);
}

.recording-track-item:last-child {
  border-bottom: none;
}

.recording-track-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.recording-track-size {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.recording-track-download {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  padding: 3px 10px;
  border-radius: 2px;
  background-color: transparent;
  color: var(--data-cyan-dim);
  border: 1px solid var(--data-cyan-dim);
  cursor: pointer;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.recording-track-download:hover {
  background-color: var(--data-cyan-glow);
  color: var(--data-cyan);
}

/* ==========================================
   STREAMING
   ========================================== */

.streaming-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.streaming-status.streaming {
  color: var(--status-connected);
}

.streaming-status.connecting,
.streaming-status.reconnecting {
  color: var(--status-connecting);
}

.streaming-status.reconnecting {
  animation: pulse-status 2s ease-in-out infinite;
}

.streaming-status.error {
  color: var(--status-error);
}

.streaming-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.streaming-config {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.streaming-config label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

#bitrate-select {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border);
  border-radius: 2px;
  background-color: var(--surface-raised);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

#bitrate-select:hover {
  border-color: var(--border-strong);
}

#bitrate-select:focus {
  outline: none;
  border-color: var(--signal-amber);
}

.streaming-info {
  padding: var(--space-2) 0;
}

.streaming-url {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.streaming-url a {
  color: var(--data-cyan-dim);
  text-decoration: none;
  margin-left: var(--space-2);
  font-weight: 500;
  padding: 2px 6px;
  background-color: var(--surface-raised);
  border-radius: 2px;
}

.streaming-url a:hover {
  color: var(--data-cyan);
  background-color: var(--surface-elevated);
}

/* ==========================================
   EXPORT PANEL — Clean or Raw?
   ========================================== */

.export-panel {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}

.export-title {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.export-mode-toggle {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.export-mode-btn {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s ease;
}

.export-mode-btn:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.export-mode-btn.active {
  color: var(--signal-amber);
  border-color: var(--signal-amber);
  background-color: var(--signal-amber-glow);
}

.export-mode-btn.active[data-mode="clean"] {
  color: var(--signal-red);
  border-color: var(--signal-red);
  background-color: var(--signal-red-glow);
}

/* Clean options collapsible */
.clean-options-collapsible {
  margin-bottom: var(--space-3);
  padding: var(--space-3);
  background-color: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 2px;
}

.clean-option-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-1) 0;
}

.clean-option-row label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.clean-option-row select {
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--border);
  border-radius: 2px;
  background-color: var(--surface-elevated);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.clean-option-row select:hover {
  border-color: var(--border-strong);
}

.clean-option-row select:focus {
  outline: none;
  border-color: var(--signal-amber);
}

/* Export actions */
.export-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-export {
  flex: 1;
  padding: var(--space-2) var(--space-4);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background-color: transparent;
  color: var(--signal-amber);
  border: 1px solid var(--signal-amber);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-export:not(:disabled):hover {
  background-color: var(--signal-amber-glow);
  box-shadow: 0 0 12px var(--signal-amber-glow);
}

.btn-export:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ───────── Show Notes Panel ───────── */

.export-divider {
  text-align: center;
  color: var(--color-void-mid);
  font-size: 0.75rem;
  padding: 12px 0;
  position: relative;
}

.export-divider::before,
.export-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 40px);
  height: 1px;
  background: var(--color-void-mid);
}

.export-divider::before { left: 0; }
.export-divider::after { right: 0; }

.btn-transcribe {
  background: var(--color-void-lighter);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-signal-warm-white);
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.2s ease;
}

.btn-transcribe:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-transcribe:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.transcribe-section {
  margin-top: 12px;
}

.show-notes-panel {
  background: var(--color-void-lighter);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: 12px;
  margin-top: 12px;
}

.show-notes-title {
  color: var(--signal-amber);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.show-notes-field {
  margin-bottom: 12px;
}

.show-notes-field label {
  display: block;
  color: var(--color-void-dim);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.show-notes-field input[type="text"] {
  width: 100%;
  background: var(--color-void);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  color: var(--color-signal-warm-white);
  padding: 8px;
  font-size: 0.9rem;
  outline: none;
}

.show-notes-field input[type="text"]:focus {
  border-color: var(--signal-amber);
}

.show-notes-textarea {
  width: 100%;
  background: var(--color-void);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  color: var(--color-signal-warm-white);
  padding: 8px;
  font-size: 0.85rem;
  min-height: 60px;
  resize: vertical;
  line-height: 1.5;
}

.segment-list {
  max-height: 200px;
  overflow-y: auto;
}

.segment-item {
  display: flex;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  align-items: flex-start;
}

.segment-index {
  color: var(--signal-amber);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  min-width: 24px;
  padding-top: 2px;
}

.segment-timestamp {
  color: var(--signal-amber);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  min-width: 50px;
  padding-top: 2px;
}

.segment-text {
  color: var(--color-signal-warm-white);
  font-size: 0.8rem;
  line-height: 1.4;
}

.show-notes-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  align-items: center;
}

.btn-secondary {
  background: var(--color-void-lighter);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-signal-warm-white);
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Export status (processing / error) */
.export-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.export-status.processing {
  color: var(--signal-amber);
}

.export-status.error {
  color: var(--signal-red);
}

.export-status.success {
  color: var(--status-connected);
}

/* Spinner */
.export-spinner {
  width: 12px;
  height: 12px;
  border: 2px solid var(--signal-amber);
  border-top-color: transparent;
  border-radius: 50%;
  animation: export-spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes export-spin {
  to { transform: rotate(360deg); }
}

/* Download cleaned audio button */
.btn-download-cleaned {
  padding: var(--space-2) var(--space-4);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background-color: transparent;
  color: var(--data-cyan);
  border: 1px solid var(--data-cyan-dim);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-download-cleaned:hover {
  background-color: var(--data-cyan-glow);
  box-shadow: 0 0 12px var(--data-cyan-glow);
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 768px) {
  header {
    padding: 0 var(--space-4);
    grid-template-columns: 1fr auto;
    gap: var(--space-2);
  }

  .tagline {
    display: none;
  }

  main {
    padding: var(--space-4);
    gap: var(--space-4);
  }

  .stage {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-3);
  }

  .transport {
    flex-direction: column;
  }

  .transport button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  header {
    padding: 0 var(--space-3);
  }

  main {
    padding: var(--space-3);
  }

  .stage {
    grid-template-columns: 1fr;
  }

  .streaming-controls {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ==========================================
   CAPABILITY GATING — modal + disabled state
   ========================================== */

/* Disabled-by-capability button: muted look, info icon, still clickable. */
.disabled-by-capability {
  opacity: 0.55;
  border-style: dashed !important;
  position: relative;
}
.disabled-by-capability:hover {
  opacity: 0.85;
  background-color: var(--signal-amber-glow) !important;
  box-shadow: 0 0 8px var(--signal-amber-glow) !important;
}
.capability-info-icon {
  display: inline-block;
  margin-left: var(--space-2);
  color: var(--signal-amber);
  font-size: 0.95em;
  font-weight: 600;
}

/* Dialog — reset native chrome, paint as floating card. */
.capability-modal {
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background-color: var(--surface-raised);
  color: var(--text-primary);
  max-width: 520px;
  width: calc(100vw - var(--space-6));
  max-height: calc(100vh - var(--space-8));
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--signal-amber-glow);
}
.capability-modal::backdrop {
  background-color: rgba(10, 10, 15, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.capability-modal-content {
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - var(--space-8));
}

.capability-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}
.capability-modal-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--signal-amber);
}
.capability-modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 var(--space-2);
  transition: color 0.15s ease;
}
.capability-modal-close:hover { color: var(--text-primary); }

.capability-modal-body {
  padding: var(--space-4) var(--space-5);
  overflow-y: auto;
  flex: 1;
}
.capability-intro {
  margin: 0 0 var(--space-4);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.capability-req-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.capability-req {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: var(--space-3);
}
.capability-req-head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.capability-req-status {
  font-weight: 700;
  width: 1.1em;
  display: inline-block;
  text-align: center;
}
.capability-req-status.present { color: var(--status-connected); }
.capability-req-status.missing { color: var(--signal-amber); }
.capability-req-name {
  color: var(--text-primary);
  flex: 1;
}
.capability-req-state {
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.capability-req-install {
  margin: var(--space-2) 0 0;
  padding: var(--space-2) var(--space-3);
  background-color: var(--void);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--data-cyan);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  line-height: 1.5;
}

.capability-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border);
}
.capability-modal-docs {
  color: var(--data-cyan);
  font-size: var(--text-sm);
  text-decoration: none;
}
.capability-modal-docs:hover { text-decoration: underline; }
.capability-modal-ok {
  padding: var(--space-2) var(--space-4);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background-color: transparent;
  color: var(--signal-amber);
  border: 1px solid var(--signal-amber);
  cursor: pointer;
  transition: all 0.2s ease;
}
.capability-modal-ok:hover {
  background-color: var(--signal-amber-glow);
  box-shadow: 0 0 12px var(--signal-amber-glow);
}

@media (max-width: 480px) {
  .capability-modal {
    width: calc(100vw - var(--space-4));
    max-height: calc(100vh - var(--space-4));
  }
  .capability-modal-footer {
    flex-direction: column-reverse;
    align-items: stretch;
  }
  .capability-modal-ok { width: 100%; }
}