/* ==========================================================================
   Portal — Design System & Global Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --------------------------------------------------------------------------
   Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-bg:          #0a0a0f;
  --color-surface:     #13131a;
  --color-surface-2:   #1c1c28;
  --color-surface-3:   #252535;
  --color-border:      rgba(255,255,255,0.08);
  --color-border-2:    rgba(255,255,255,0.14);
  --color-primary:     #6c63ff;
  --color-primary-dim: rgba(108,99,255,0.25);
  --color-accent:      #00d4aa;
  --color-accent-dim:  rgba(0,212,170,0.2);
  --color-danger:      #ff4d6d;
  --color-warning:     #ffa94d;
  --color-text:        #f0f0f8;
  --color-text-muted:  #8888a8;
  --color-online:      #00d4aa;
  --color-offline:     #ff4d6d;

  /* Typography */
  --font:              'Inter', system-ui, sans-serif;
  --text-xs:           0.75rem;
  --text-sm:           0.875rem;
  --text-base:         1rem;
  --text-lg:           1.125rem;
  --text-xl:           1.375rem;

  /* Subtitle */
  --subtitle-size:     1.6rem;
  --subtitle-position: bottom; /* bottom | top */
  --subtitle-max-lines: 2;

  /* Layout */
  --pip-size:          220px;
  --config-panel-width: 380px;
  --radius:            12px;
  --radius-sm:         8px;

  /* Transitions */
  --transition:        200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

/* --------------------------------------------------------------------------
   App Shell
   -------------------------------------------------------------------------- */
#app {
  position: relative;
  width: 100vw; height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   Remote Video (fullscreen background)
   -------------------------------------------------------------------------- */
#remote-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  background: #000;
  z-index: 1;
  transition: opacity var(--transition-slow);
}

#remote-video.hidden { opacity: 0; }

/* --------------------------------------------------------------------------
   Connection overlay (shown while waiting for peer)
   -------------------------------------------------------------------------- */
#connection-overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: radial-gradient(ellipse at center, #1a1a2e 0%, var(--color-bg) 70%);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

#connection-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.overlay-logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.overlay-status {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--color-border-2);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.overlay-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  opacity: 0.6;
}

/* --------------------------------------------------------------------------
   Status Badge (top-right)
   -------------------------------------------------------------------------- */
#status-badge {
  position: absolute;
  top: 1rem; right: 1rem;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: opacity var(--transition);
}

#status-badge .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-offline);
  transition: background var(--transition);
  flex-shrink: 0;
}

#status-badge.connected .dot { background: var(--color-online); }
#status-badge.connected { color: var(--color-text); }

/* --------------------------------------------------------------------------
   Subtitle Bars
   -------------------------------------------------------------------------- */
#subtitle-bar, #subtitle-bar-original {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  max-width: min(860px, 90vw);
  width: 100%;
  padding: 0.75rem 1.4rem;
  background: rgba(0,0,0,0.80);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  font-size: var(--subtitle-size);
  font-weight: 500;
  line-height: 1.45;
  text-align: center;
  color: #fff;
  white-space: pre-wrap;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
}

#subtitle-bar.bottom, #subtitle-bar-original.bottom { bottom: 3.5rem; }
#subtitle-bar.top, #subtitle-bar-original.top    { top: 3.5rem; }
#subtitle-bar.visible, #subtitle-bar-original.visible { opacity: 1; }

/* Interim subtitle text is slightly dimmer */
#subtitle-bar .interim, #subtitle-bar-original .interim { opacity: 0.65; font-style: italic; }
#subtitle-bar-original .interim-opac { opacity: 0.85; font-style: normal; color: #d0d0dc; }

/* --------------------------------------------------------------------------
   Idle Mic Prompt
   -------------------------------------------------------------------------- */
#idle-prompt {
  position: absolute;
  bottom: 6rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 38;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  pointer-events: none;
}

#idle-prompt.visible {
  opacity: 1;
  visibility: visible;
}

#idle-prompt .idle-icon {
  font-size: 2.4rem;
  animation: idleBounce 1.2s ease-in-out infinite;
  filter: drop-shadow(0 0 10px rgba(108,99,255,0.7));
}

#idle-prompt .idle-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.7);
  text-align: center;
  background: rgba(0,0,0,0.55);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
}

@keyframes idleBounce {
  0%, 100% { transform: translateY(0); }
  40%       { transform: translateY(-10px); }
  60%       { transform: translateY(-5px); }
}

/* --------------------------------------------------------------------------
   Long Message Warning
   -------------------------------------------------------------------------- */
#long-msg-warning {
  position: absolute;
  top: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9990;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.2rem;
  background: rgba(255,100,0,0.18);
  border: 1px solid var(--color-warning);
  border-radius: 999px;
  backdrop-filter: blur(12px);
  color: var(--color-warning);
  font-size: var(--text-sm);
  font-weight: 600;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  pointer-events: none;
}

#long-msg-warning.visible {
  opacity: 1;
  visibility: visible;
  animation: warnPulse 1.5s ease-in-out infinite;
}

@keyframes warnPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,169,77,0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(255,169,77,0); }
}

/* --------------------------------------------------------------------------
   Local Video PiP
   -------------------------------------------------------------------------- */
#local-video-container {
  position: absolute;
  bottom: 1.5rem; right: 1.5rem;
  z-index: 45;
  width: var(--pip-size);
  aspect-ratio: 16/9;
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.18);
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  cursor: grab;
  transition: opacity var(--transition), transform var(--transition);
  transform-origin: bottom right;
}

#local-video-container.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.85);
}

#local-video-container:active { cursor: grabbing; }

#local-video {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scaleX(-1); /* mirror */
  background: #000;
}

/* --------------------------------------------------------------------------
   Keyboard Hint Toasts
   -------------------------------------------------------------------------- */
#hint-container {
  position: absolute;
  top: 1rem; left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
}

.hint-toast {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border-2);
  border-radius: 999px;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  animation: hintFadeIn 0.3s ease, hintFadeOut 0.4s ease 3s forwards;
}

.hint-toast kbd {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.4rem;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border-2);
  border-radius: 4px;
  font-family: var(--font);
  font-size: 0.7rem;
  color: var(--color-text);
}

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

/* --------------------------------------------------------------------------
   Config Panel (slide-in from right)
   -------------------------------------------------------------------------- */
#config-panel {
  position: absolute;
  top: 0; right: 0;
  height: 100%;
  width: var(--config-panel-width);
  max-width: 100vw;
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  overflow: hidden;
}

#config-panel.open { transform: translateX(0); }

/* Backdrop for closing the panel */
#config-backdrop {
  position: absolute;
  inset: 0;
  z-index: 199;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

#config-backdrop.open { opacity: 1; pointer-events: all; }

/* Panel header */
.config-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.config-header h2 {
  font-size: var(--text-lg);
  font-weight: 600;
}

.config-close-btn {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  transition: background var(--transition), color var(--transition);
}

.config-close-btn:hover { background: var(--color-surface-3); color: var(--color-text); }

/* Panel body */
.config-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  scroll-behavior: smooth;
}

.config-body::-webkit-scrollbar { width: 4px; }
.config-body::-webkit-scrollbar-track { background: transparent; }
.config-body::-webkit-scrollbar-thumb { background: var(--color-surface-3); border-radius: 2px; }

/* Config section */
.config-section { display: flex; flex-direction: column; gap: 1rem; }

.config-section-title {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* Form fields */
.config-field { display: flex; flex-direction: column; gap: 0.4rem; }

.config-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

.config-select {
  appearance: none;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font);
  font-size: var(--text-sm);
  padding: 0.55rem 2rem 0.55rem 0.75rem;
  cursor: pointer;
  transition: border-color var(--transition);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238888a8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 12px;
}

.config-select:focus { outline: none; border-color: var(--color-primary); }
.config-select option { background: var(--color-surface-2); }

/* Range slider */
.config-range {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--color-surface-3);
  outline: none;
}

.config-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  transition: transform var(--transition);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

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

.range-value {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: right;
}

/* VU Meter */
#vu-meter-canvas {
  width: 100%;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
}

/* Connection status grid */
.status-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.status-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.status-card-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.status-card-value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.status-card-value.good    { color: var(--color-accent); }
.status-card-value.bad     { color: var(--color-danger); }
.status-card-value.warning { color: var(--color-warning); }

/* Toggle switch */
.config-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.toggle-label { font-size: var(--text-sm); color: var(--color-text-muted); }

.toggle-switch {
  position: relative;
  width: 40px; height: 22px;
  flex-shrink: 0;
}

.toggle-switch input { opacity: 0; width: 0; height: 0; }

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--color-surface-3);
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--transition);
  border: 1px solid var(--color-border-2);
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--color-text-muted);
  transition: transform var(--transition), background var(--transition);
}

.toggle-switch input:checked + .toggle-track {
  background: var(--color-primary-dim);
  border-color: var(--color-primary);
}

.toggle-switch input:checked + .toggle-track::after {
  transform: translateX(18px);
  background: var(--color-primary);
}

/* Subtitle position buttons */
.btn-group {
  display: flex;
  gap: 0.5rem;
}

.btn-option {
  flex: 1;
  padding: 0.5rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-family: var(--font);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.btn-option:hover { background: var(--color-surface-3); color: var(--color-text); }
.btn-option.active { background: var(--color-primary-dim); border-color: var(--color-primary); color: var(--color-primary); }

/* --------------------------------------------------------------------------
   Permission Screen
   -------------------------------------------------------------------------- */
#permission-screen {
  position: absolute;
  inset: 0;
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2rem;
  background: radial-gradient(ellipse at 30% 40%, rgba(108,99,255,0.12) 0%, var(--color-bg) 60%);
}

#permission-screen.hidden { display: none; }

.perm-icon {
  font-size: 3rem;
  line-height: 1;
}

.perm-title {
  font-size: var(--text-xl);
  font-weight: 700;
  text-align: center;
}

.perm-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 340px;
  line-height: 1.6;
}

.perm-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  border: none;
  border-radius: var(--radius);
  color: #fff;
  font-family: var(--font);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 24px rgba(108,99,255,0.35);
}

.perm-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 32px rgba(108,99,255,0.5); }
.perm-btn:active { transform: translateY(0); }

.perm-error {
  font-size: var(--text-sm);
  color: var(--color-danger);
  text-align: center;
  max-width: 340px;
  padding: 0.75rem 1rem;
  background: rgba(255,77,109,0.1);
  border: 1px solid rgba(255,77,109,0.25);
  border-radius: var(--radius-sm);
  display: none;
}

.perm-error.visible { display: block; }

/* --------------------------------------------------------------------------
   AI Processing Indicator
   -------------------------------------------------------------------------- */
#ai-indicator {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(10, 10, 15, 0.85);
  border: 1px solid var(--color-primary);
  border-radius: 999px;
  backdrop-filter: blur(12px);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0,0,0,0.6);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  transform: translateZ(0);
}

#ai-indicator.visible {
  opacity: 1;
  visibility: visible;
}

.ai-spinner {
  width: 12px; height: 12px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* --------------------------------------------------------------------------
   Portrait / Vertical screen adaptations
   -------------------------------------------------------------------------- */
@media (orientation: portrait) {
  :root {
    --subtitle-size: 1.3rem;
    --pip-size: 140px;
    --config-panel-width: 100vw;
  }

  #subtitle-bar, #subtitle-bar-original {
    max-width: 95vw;
  }

  #subtitle-bar.bottom, #subtitle-bar-original.bottom { bottom: 5rem; }
  #subtitle-bar.top, #subtitle-bar-original.top    { top: 5rem; }

  #local-video-container {
    bottom: 1rem; right: 1rem;
  }

  #status-badge {
    top: 0.75rem; right: 0.75rem;
  }
}

/* Very wide / TV-like screens */
@media (min-width: 2560px) {
  :root { --subtitle-size: 2.2rem; }
}