/* ================================================================
   SGLang-Omni Playground — Dark / Light Theme
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ---- Dark theme (default) ---- */
:root {
  /* Surface system */
  --bg: #08080c;
  --surface: #111116;
  --surface-2: #19191f;
  --surface-3: #222229;
  --surface-hover: #2a2a33;

  /* Borders */
  --border: #2a2a35;
  --border-subtle: #1e1e27;
  --border-accent: rgba(245, 158, 11, 0.25);

  /* Text */
  --text: #ececef;
  --text-secondary: #a1a1aa;
  --muted: #71717a;

  /* Accent — warm amber */
  --accent: #f59e0b;
  --accent-hover: #fbbf24;
  --accent-soft: rgba(245, 158, 11, 0.10);
  --accent-glow: rgba(245, 158, 11, 0.04);

  /* Semantic */
  --user-bg: rgba(245, 158, 11, 0.06);
  --user-border: rgba(245, 158, 11, 0.15);
  --assistant-bg: #111116;
  --assistant-border: #2a2a35;
  --error: #ef4444;
  --success: #22c55e;

  /* Misc */
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --pill: 999px;

  /* Typography */
  --font-display: 'IBM Plex Sans', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 180ms;

  /* Canvas colors (read by JS) */
  --canvas-bg: #19191f;
  --canvas-wave: #f59e0b;
  --canvas-bar: #71717a;
  --canvas-line: #2a2a35;

  /* Grid overlay */
  --grid-color: rgba(255,255,255,0.015);

  /* Selection */
  --selection-bg: rgba(245, 158, 11, 0.3);
  --selection-text: #fff;

  /* Scrollbar */
  --scrollbar-thumb: var(--border);
  --scrollbar-thumb-hover: var(--surface-hover);

  /* Backdrop */
  --modal-backdrop: rgba(0, 0, 0, 0.7);

  /* Primary button text */
  --on-accent: #0a0a0f;
}

/* ---- Light theme ---- */
[data-theme="light"] {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-2: #f0f0f3;
  --surface-3: #e8e8ec;
  --surface-hover: #dcdce2;

  --border: #d4d4da;
  --border-subtle: #e5e5ea;
  --border-accent: rgba(217, 119, 6, 0.30);

  --text: #1a1a1f;
  --text-secondary: #52525b;
  --muted: #71717a;

  --accent: #d97706;
  --accent-hover: #b45309;
  --accent-soft: rgba(217, 119, 6, 0.10);
  --accent-glow: rgba(217, 119, 6, 0.04);

  --user-bg: rgba(217, 119, 6, 0.06);
  --user-border: rgba(217, 119, 6, 0.20);
  --assistant-bg: #ffffff;
  --assistant-border: #d4d4da;
  --error: #dc2626;
  --success: #16a34a;

  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);

  --canvas-bg: #f0f0f3;
  --canvas-wave: #d97706;
  --canvas-bar: #a1a1aa;
  --canvas-line: #d4d4da;

  --grid-color: rgba(0,0,0,0.025);

  --selection-bg: rgba(217, 119, 6, 0.25);
  --selection-text: #000;

  --scrollbar-thumb: #c4c4cc;
  --scrollbar-thumb-hover: #a1a1aa;

  --modal-backdrop: rgba(0, 0, 0, 0.35);

  --on-accent: #fff;
}

/* ================================================================
   Reset & Base
   ================================================================ */

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

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle grid pattern on body */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-text);
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

/* ================================================================
   App Shell
   ================================================================ */

.app {
  position: relative;
  z-index: 1;
  max-width: 1480px;
  margin: 0 auto;
  padding: 20px 24px;
}

.header {
  margin-bottom: 20px;
  overflow: visible;
}

.header-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 36px;
}

.header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.header h1::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: middle;
  box-shadow: 0 0 12px var(--accent-soft);
}

/* Theme toggle */
.theme-toggle {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration) var(--ease);
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  background: var(--accent-soft);
}

/* In dark mode: show sun icon (to switch to light), hide moon */
.theme-icon-moon { display: none; }
.theme-icon-sun  { display: block; }

/* In light mode: show moon icon (to switch to dark), hide sun */
[data-theme="light"] .theme-icon-moon { display: block; }
[data-theme="light"] .theme-icon-sun  { display: none; }

.subtitle {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  max-width: 600px;
}

/* ================================================================
   Layout
   ================================================================ */

.layout {
  display: grid;
  grid-template-columns: 280px 400px 1fr;
  gap: 14px;
  align-items: start;
}

/* ================================================================
   Cards
   ================================================================ */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.card-title,
.chat-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title::before,
.chat-title::before {
  content: '';
  width: 3px;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ================================================================
   Parameters Panel
   ================================================================ */

.params label,
.prompt-label {
  display: block;
  margin: 14px 0 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.params input[type="text"],
.params select,
.params textarea,
#user-prompt {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text);
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
  outline: none;
}

.params input[type="text"]:focus,
.params select:focus,
.params textarea:focus,
#user-prompt:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.params select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

.params textarea,
#user-prompt { resize: vertical; }

#system-prompt {
  min-height: 140px;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 13px;
}

/* Sliders */
.slider-block { margin-top: 14px; }

.slider-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.slider-label span:last-child {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--accent);
  font-size: 12px;
}

.params input[type="range"] {
  width: 100%;
  height: 4px;
  appearance: none;
  -webkit-appearance: none;
  background: var(--surface-3);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.params input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.3);
  transition: transform var(--duration) var(--ease);
}

.params input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.params input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
  cursor: pointer;
}

/* ================================================================
   IO Panel (Media + Prompt)
   ================================================================ */

.io-panel { display: flex; flex-direction: column; gap: 14px; }

.io-section {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  background: var(--surface-2);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  min-height: 150px;
  transition: border-color var(--duration) var(--ease);
}

.io-section:hover {
  border-color: var(--surface-hover);
}

.io-section.audio {
  align-items: flex-start;
  justify-content: flex-start;
  height: 260px;
  min-height: 260px;
  max-height: 260px;
  position: relative;
}

.io-section.video {
  height: 260px;
  min-height: 260px;
  max-height: 260px;
  justify-content: flex-start;
  position: relative;
}

.io-header {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  width: 100%;
}

.io-section.audio .io-header { text-align: left; }

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

.io-section.audio .io-controls {
  flex-direction: column;
  align-items: center;
  gap: 8px;
  justify-content: flex-start;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.io-section.audio .pill-primary,
.io-section.audio .pill-ghost {
  flex: 0 0 auto;
  text-align: center;
  justify-content: center;
}

.io-section.audio .status-text {
  flex: 0 0 auto;
}

.io-section.video .io-controls {
  flex-direction: column;
  align-items: center;
  gap: 8px;
  justify-content: center;
  width: 100%;
}

.video-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.video-controls.hidden { display: none; }

.video-preview-wrap {
  position: relative;
  width: 100%;
}

.video-preview-wrap.hidden { display: none; }
.video-preview-wrap .webcam { margin-top: 0; }

.video-clear-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--duration) var(--ease);
}

.video-clear-btn:hover {
  background: var(--error);
}

.video-record-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 8px;
}

.video-record-row.hidden { display: none; }

.io-section.video .pill {
  flex: 0 0 auto;
  text-align: center;
  justify-content: center;
  width: 70%;
  max-width: 220px;
}

/* ================================================================
   Pills (Record / Upload / Server files buttons)
   ================================================================ */

.pill {
  border-radius: var(--pill);
  padding: 7px 14px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--surface-3);
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--duration) var(--ease);
}

.pill:hover {
  border-color: var(--surface-hover);
  color: var(--text);
  background: var(--surface-hover);
}

.pill input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.pill-primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  font-weight: 600;
}

.pill-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--on-accent);
}

.pill-secondary {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--border-accent);
}

.pill-secondary:hover {
  background: rgba(245, 158, 11, 0.15);
}

.pill-ghost {
  background: transparent;
  border-color: var(--border);
}

.pill-ghost:hover {
  background: var(--surface-3);
  border-color: var(--surface-hover);
}

.status-text { color: var(--accent); font-size: 12px; font-family: var(--font-mono); }

/* ================================================================
   Webcam
   ================================================================ */

.webcam {
  width: 100%;
  max-height: 180px;
  border-radius: var(--radius-sm);
  background: #000;
  margin-top: 8px;
}

/* ================================================================
   Audio Visualizer
   ================================================================ */

.visualizer {
  flex: 1;
  min-width: 0;
  height: 60px;
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px 8px;
}

#audio-visualizer {
  width: 100%;
  height: 60px;
}

.record-row {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 8px;
  justify-content: flex-start;
}

.record-row.hidden { display: none; }

.record-row #mic-previews {
  margin-top: 0;
  flex: 1;
  min-height: 60px;
  max-height: none;
}

.record-row #mic-previews.hidden { display: none; }

.pill-stop {
  flex: 0 0 auto;
  width: 48px;
  min-width: 48px;
  height: 60px;
  padding: 0;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.pill-stop:hover {
  background: rgba(239, 68, 68, 0.25);
}

/* ================================================================
   Preview Grids & Audio Player
   ================================================================ */

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 8px;
  margin-top: 10px;
  min-height: 70px;
}

.io-section.audio .preview-grid {
  margin-top: 12px;
  width: 100%;
}

#audio-previews,
#mic-previews { grid-template-columns: 1fr; }

.io-section.audio {
  display: flex;
  flex-direction: column;
}

.io-section.audio #record-row {
  flex: 0 0 auto;
  width: 100%;
}

.io-section.audio #audio-previews {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
}

.io-section.audio #audio-previews > .preview-wrap:only-child {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.io-section.audio #audio-previews > .preview-wrap:only-child .audio-preview-controls {
  margin-top: auto;
}

#video-previews,
#webcam-previews,
#image-previews {
  min-height: 70px;
}

.preview-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface-2);
}

.audio-wave-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.audio-wave-wrap .wave-canvas {
  width: 100%;
  height: 56px;
  display: block;
  vertical-align: top;
}

.audio-scrubber {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  opacity: 0.9;
  pointer-events: none;
  left: 0;
  transition: left 0.05s linear;
  box-shadow: 0 0 6px rgba(245, 158, 11, 0.5);
}

.audio-time-row {
  display: flex;
  justify-content: space-between;
  padding: 2px 6px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

.wave-canvas {
  width: 100%;
  height: 60px;
  display: block;
}

.preview-audio-el { display: none; }

.audio-preview-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.audio-icon-btn {
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: all var(--duration) var(--ease);
}

.audio-icon svg {
  width: 16px;
  height: 16px;
  display: block;
}

.audio-icon-btn:hover,
.audio-icon-btn.active {
  color: var(--text);
  border-color: var(--surface-hover);
  background: var(--surface-3);
}

.audio-speed-btn {
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--muted);
  cursor: pointer;
  min-width: 36px;
  transition: all var(--duration) var(--ease);
}

.audio-speed-btn:hover { color: var(--text); }

.audio-play-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 2px;
  transition: all var(--duration) var(--ease);
}

.audio-play-btn:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.3);
}

.audio-play-btn .audio-play-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.audio-play-btn .audio-play-icon svg {
  width: 18px;
  height: 18px;
  display: block;
}

.audio-ctrl-btn {
  padding: 4px 10px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}

.audio-ctrl-btn:hover {
  background: var(--accent-soft);
  border-color: var(--border-accent);
  color: var(--accent);
}

.audio-speed-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-left: 4px;
}

.audio-speed-select {
  padding: 4px 6px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--text);
}

.preview-wrap img,
.preview-wrap video,
.preview-wrap audio {
  width: 100%;
  display: block;
  min-width: 260px;
}

.del-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  border: none;
  background: rgba(0,0,0,0.7);
  color: #fff;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  cursor: pointer;
  transition: background var(--duration) var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.del-btn:hover {
  background: var(--error);
}

/* ================================================================
   Prompt & Action Buttons
   ================================================================ */

.prompt-label { margin-top: 6px; }
#user-prompt { min-height: 80px; }

.actions-stack { display: flex; flex-direction: column; gap: 8px; }

.btn-primary,
.btn-secondary,
.btn-tertiary {
  width: 100%;
  padding: 11px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.2);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.25);
}

.btn-secondary:hover {
  background: rgba(239, 68, 68, 0.2);
}

.btn-tertiary {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
}

.btn-tertiary:hover {
  color: var(--text-secondary);
  background: var(--surface-2);
}

/* ================================================================
   Chat Panel
   ================================================================ */

.chat-panel {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 120px);
  min-height: 520px;
}

.chat-area {
  margin-top: 4px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  background: var(--bg);
}

.chat-placeholder {
  color: var(--muted);
  text-align: center;
  padding: 48px 16px;
  font-size: 13px;
  line-height: 1.7;
}

.chat-placeholder.hidden { display: none; }

.messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  animation: msgIn 0.25s var(--ease) both;
}

@keyframes msgIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.msg-user {
  background: var(--user-bg);
  border-color: var(--user-border);
}

.msg-assistant {
  background: var(--assistant-bg);
  border-color: var(--assistant-border);
}

.msg-assistant.streaming .msg-content::after {
  content: "▊";
  animation: blink 1s step-end infinite;
  margin-left: 2px;
  color: var(--accent);
}

@keyframes blink { 50% { opacity: 0; } }

.msg-role {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.msg-user .msg-role {
  color: var(--accent);
}

.msg-assistant .msg-role {
  color: var(--muted);
}

.msg-content {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.6;
}

.msg-media {
  margin: 8px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.msg-media img,
.msg-media video {
  max-width: 160px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.msg-media audio {
  width: 100% !important;
  max-width: 100%;
  min-width: 100%;
  display: block;
}

/* ================================================================
   Filesystem Browser Modal
   ================================================================ */

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s var(--ease) both;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--modal-backdrop);
  backdrop-filter: blur(4px);
}

.modal-card {
  position: relative;
  width: min(900px, 94vw);
  height: min(720px, 86vh);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  animation: modalSlideIn 0.25s var(--ease) both;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
}

.modal-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.modal-close {
  border: 1px solid var(--border);
  background: var(--surface-2);
  border-radius: var(--radius-xs);
  width: 30px;
  height: 30px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  color: var(--muted);
  transition: all var(--duration) var(--ease);
}

.modal-close:hover {
  color: var(--text);
  border-color: var(--surface-hover);
}

.modal-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}

/* FS Toolbar */
.fs-toolbar {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
}

.fs-nav-btn {
  border: 1px solid var(--border);
  background: var(--surface-2);
  border-radius: var(--radius-xs);
  min-width: 48px;
  padding: 0 8px;
  height: 30px;
  font-family: var(--font-body);
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--duration) var(--ease);
}

.fs-nav-btn:hover:not(:disabled) {
  background: var(--surface-3);
  color: var(--text);
}

.fs-nav-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.fs-breadcrumb {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 5px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  overflow-x: auto;
  white-space: nowrap;
  background: var(--surface-2);
}

.fs-crumb {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 2px 4px;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  transition: all var(--duration) var(--ease);
}

.fs-crumb:hover {
  background: var(--surface-3);
  color: var(--accent);
}

.fs-crumb-sep {
  color: var(--border);
}

/* FS Browser */
.fs-browser {
  width: 100%;
  margin-top: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 200px;
  overflow: hidden;
  background: var(--surface-2);
}

.fs-browser {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.fs-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}

.fs-current,
.fs-error {
  margin: 8px 10px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  width: auto;
  word-break: break-all;
}

.fs-error {
  color: var(--error);
}

.fs-list {
  width: auto;
  margin: 8px 10px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: auto;
  flex: 1 1 auto;
  min-height: 220px;
}

.modal .fs-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}

.fs-entry {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration) var(--ease);
}

.fs-entry:last-child { border-bottom: none; }

.fs-entry:hover {
  background: var(--accent-glow);
}

.fs-entry-name {
  font-size: 13px;
  color: var(--text);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fs-entry-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-shrink: 0;
}

.fs-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: var(--pill);
  padding: 2px 7px;
}

.fs-action {
  border: 1px solid var(--border);
  background: var(--surface-2);
  border-radius: var(--radius-xs);
  padding: 4px 8px;
  font-size: 11px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--duration) var(--ease);
}

.fs-action:hover {
  background: var(--accent-soft);
  border-color: var(--border-accent);
  color: var(--accent);
}

.fs-entry.openable .fs-entry-name {
  cursor: pointer;
}

.fs-entry.openable .fs-entry-name:hover {
  color: var(--accent);
}

/* ================================================================
   Utility
   ================================================================ */

.hidden { display: none !important; }

/* ================================================================
   Responsive
   ================================================================ */

@media (max-width: 1200px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .io-panel, .chat-panel, .params { width: 100%; }
  .chat-panel {
    height: auto;
    min-height: 400px;
    max-height: 70vh;
  }
}