/**
 * OpenStudio - Web Studio Interface Styles
 * Minimalist, functional design for broadcast studio controls
 */

/* CSS Custom Properties */
:root {
  /* Colors */
  --color-bg: #1a1a1a;
  --color-bg-secondary: #2a2a2a;
  --color-text: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-border: #404040;

  /* Status colors */
  --color-disconnected: #ef4444;
  --color-connecting: #f59e0b;
  --color-connected: #10b981;

  /* Button colors */
  --color-button-bg: #3b82f6;
  --color-button-bg-hover: #2563eb;
  --color-button-text: #ffffff;
  --color-button-disabled-bg: #404040;
  --color-button-disabled-text: #6b7280;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Layout */
  --header-height: 4rem;
  --max-width: 1400px;

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
}

/* Base styles */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* Header */
header {
  height: var(--header-height);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

#status {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 500;
}

#status::before {
  content: '';
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background-color: var(--color-disconnected);
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

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

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Main content area */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg);
  display: grid;
  grid-template-rows: 1fr auto;
  gap: var(--spacing-lg);
  min-height: calc(100vh - var(--header-height));
}

/* Participants section */
#participants {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
  align-content: start;
}

.participant-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  transition: border-color 0.2s ease;
}

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

.participant-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
}

.participant-name {
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
}

.participant-role {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Per-participant level meter */
.participant-level-meter {
  width: 150px;
  height: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  margin-top: var(--spacing-xs);
  display: block;
}

.participant-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

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

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

.mute-button {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  min-width: auto;
  background-color: #10b981; /* Green for unmuted */
  color: var(--color-button-text);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mute-button:hover {
  background-color: #059669; /* Darker green on hover */
}

/* Self-muted state (participant muted themselves) */
.mute-button.self-muted {
  background-color: #f59e0b; /* Yellow/orange */
  color: var(--color-button-text);
}

.mute-button.self-muted:hover {
  background-color: #d97706; /* Darker orange on hover */
}

/* Producer-muted state (host muted the participant) */
.mute-button.producer-muted {
  background-color: #ef4444; /* Red */
  color: var(--color-button-text);
  cursor: not-allowed; /* Participant cannot unmute themselves */
}

.mute-button.producer-muted:hover {
  background-color: #dc2626; /* Darker red on hover */
}

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

.gain-slider {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.gain-slider:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Slider thumb - Webkit (Chrome, Safari) */
.gain-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-button-bg);
  cursor: pointer;
  transition: all 0.2s ease;
}

.gain-slider::-webkit-slider-thumb:hover {
  background: var(--color-button-bg-hover);
  transform: scale(1.1);
}

.gain-slider:disabled::-webkit-slider-thumb {
  background: var(--color-button-disabled-bg);
  cursor: not-allowed;
}

/* Slider thumb - Firefox */
.gain-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 50%;
  background: var(--color-button-bg);
  cursor: pointer;
  transition: all 0.2s ease;
}

.gain-slider::-moz-range-thumb:hover {
  background: var(--color-button-bg-hover);
  transform: scale(1.1);
}

.gain-slider:disabled::-moz-range-thumb {
  background: var(--color-button-disabled-bg);
  cursor: not-allowed;
}

/* Slider track - Firefox */
.gain-slider::-moz-range-track {
  background: var(--color-border);
  border-radius: 3px;
}

.gain-value {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  min-width: 40px;
  text-align: right;
}

/* Empty state for participants */
#participants:empty::after {
  content: 'No participants yet. Start a session to begin.';
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-secondary);
  padding: var(--spacing-xl);
  font-size: 1rem;
}

/* Controls section */
#controls {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
button {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  min-width: 120px;
}

button:not(:disabled) {
  background-color: var(--color-button-bg);
  color: var(--color-button-text);
}

button:not(:disabled):hover {
  background-color: var(--color-button-bg-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

button:not(:disabled):active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

button:disabled {
  background-color: var(--color-button-disabled-bg);
  color: var(--color-button-disabled-text);
  cursor: not-allowed;
  opacity: 0.6;
}

/* Specific button styles */
#start-session {
  --color-button-bg: #10b981;
  --color-button-bg-hover: #059669;
}

#end-session {
  --color-button-bg: #ef4444;
  --color-button-bg-hover: #dc2626;
}

#toggle-mute.muted {
  --color-button-bg: #f59e0b;
  --color-button-bg-hover: #d97706;
}

/* Responsive design */
@media (max-width: 768px) {
  header {
    padding: 0 var(--spacing-md);
  }

  header h1 {
    font-size: 1.25rem;
  }

  main {
    padding: var(--spacing-md);
  }

  #participants {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
  }

  #controls {
    flex-direction: column;
  }

  button {
    width: 100%;
  }
}

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

  main {
    padding: var(--spacing-sm);
  }

  #participants {
    grid-template-columns: 1fr;
  }
}

/* Program Bus Volume Meter */
#program-bus-section {
  max-width: var(--max-width);
  margin: var(--spacing-md) auto;
  padding: 0 var(--spacing-md);
}

.meter-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.meter-container {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

#volume-meter {
  display: block;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
}

/* Responsive adjustments for meter */
@media (max-width: 768px) {
  #program-bus-section {
    padding: 0 var(--spacing-sm);
  }

  #volume-meter {
    width: 100%;
    max-width: 400px;
  }
}

@media (max-width: 480px) {
  .meter-container {
    padding: var(--spacing-xs);
  }

  #volume-meter {
    width: 100%;
  }
}

/* =========================
   Icecast Streaming Section
   ========================= */

#streaming-section {
  max-width: var(--max-width);
  margin: 0 auto var(--spacing-lg) auto;
  padding: 0 var(--spacing-lg);
}

.streaming-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.streaming-label {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.streaming-status {
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

.streaming-status.streaming {
  background-color: #10b981;
  color: #ffffff;
}

.streaming-status.connecting {
  background-color: #f59e0b;
  color: #ffffff;
}

.streaming-status.reconnecting {
  background-color: #f59e0b;
  color: #ffffff;
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.streaming-status.error {
  background-color: #ef4444;
  color: #ffffff;
}

.streaming-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-secondary);
  margin-bottom: var(--spacing-sm);
}

#start-streaming,
#stop-streaming {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  background-color: #10b981;
  color: #ffffff;
}

#start-streaming:hover:not(:disabled) {
  background-color: #059669;
}

#stop-streaming {
  background-color: #ef4444;
}

#stop-streaming:hover:not(:disabled) {
  background-color: #dc2626;
}

#start-streaming:disabled,
#stop-streaming:disabled {
  background-color: var(--color-button-disabled-bg);
  color: var(--color-button-disabled-text);
  cursor: not-allowed;
}

.streaming-config {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-left: auto;
}

.streaming-config label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

#bitrate-select {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

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

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

.streaming-info {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-secondary);
}

.streaming-url {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.streaming-url a {
  color: var(--color-button-bg);
  text-decoration: none;
  margin-left: var(--spacing-xs);
  font-weight: 500;
}

.streaming-url a:hover {
  text-decoration: underline;
}

/* Responsive adjustments for streaming section */
@media (max-width: 768px) {
  #streaming-section {
    padding: 0 var(--spacing-sm);
  }

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

  .streaming-config {
    margin-left: 0;
    justify-content: space-between;
  }

  #start-streaming,
  #stop-streaming {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .streaming-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  .streaming-controls {
    padding: var(--spacing-sm);
  }

  .streaming-info {
    padding: var(--spacing-sm);
  }

  .streaming-url {
    word-break: break-all;
  }
}

/* =========================
   Recording Section
   ========================= */

#recording-section {
  max-width: var(--max-width);
  margin: 0 auto var(--spacing-lg) auto;
  padding: 0 var(--spacing-lg);
}

.recording-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.recording-label {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.recording-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-border);
  transition: background-color 0.3s ease;
}

.recording-indicator.active {
  background-color: #ef4444;
  animation: pulse 1.5s ease-in-out infinite;
}

.recording-timer {
  font-size: 1.25rem;
  font-weight: 600;
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--color-text-secondary);
  min-width: 80px;
}

.recording-timer.active {
  color: #ef4444;
}

.recording-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-secondary);
  margin-bottom: var(--spacing-sm);
}

#start-recording {
  background-color: #ef4444;
  color: #ffffff;
}

#start-recording:hover:not(:disabled) {
  background-color: #dc2626;
}

#stop-recording {
  background-color: var(--color-button-bg);
  color: #ffffff;
}

#download-recordings {
  background-color: #10b981;
  color: #ffffff;
}

#download-recordings:hover:not(:disabled) {
  background-color: #059669;
}

.recording-tracks {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-secondary);
}

.recording-tracks h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
}

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

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

.recording-track-name {
  font-size: 0.875rem;
  font-weight: 500;
}

.recording-track-size {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.recording-track-download {
  font-size: 0.75rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background-color: var(--color-button-bg);
  color: #ffffff;
  border: none;
  cursor: pointer;
}

.recording-track-download:hover {
  background-color: var(--color-button-bg-hover);
}

/* Recording responsive */
@media (max-width: 768px) {
  #recording-section {
    padding: 0 var(--spacing-sm);
  }

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