/* ═══════════════════════════════════════════════════════════════════════════
   KPFT Stream Monitor — Dark Material Design 3 Theme
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Google Font ───────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Design Tokens ─────────────────────────────────────────────────────────── */
:root {
  /* Surface colors */
  --surface-0: #0a0a12;
  --surface-1: #12121e;
  --surface-2: #1a1a2e;
  --surface-3: #22223a;
  --surface-4: #2a2a46;

  /* Accent */
  --primary: #7c6aef;
  --primary-light: #a595ff;
  --primary-dark: #5a49c9;
  --primary-surface: rgba(124, 106, 239, 0.08);

  /* Status */
  --status-up: #22c55e;
  --status-up-glow: rgba(34, 197, 94, 0.25);
  --status-up-surface: rgba(34, 197, 94, 0.08);
  --status-down: #ef4444;
  --status-down-glow: rgba(239, 68, 68, 0.25);
  --status-down-surface: rgba(239, 68, 68, 0.08);
  --status-unknown: #6b7280;
  --status-unknown-glow: rgba(107, 114, 128, 0.25);

  /* Text */
  --text-primary: #f0f0f5;
  --text-secondary: #9090a8;
  --text-tertiary: #606078;

  /* Border */
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  /* Misc */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--surface-0);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

/* ── Background Gradient ───────────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(124, 106, 239, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(34, 197, 94, 0.04), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ── App Container ─────────────────────────────────────────────────────────── */
.app {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ────────────────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 16px rgba(124, 106, 239, 0.3);
}

.header-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-subtitle {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 400;
  margin-top: 1px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.connection-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.connection-badge.connected {
  color: var(--status-up);
  border-color: rgba(34, 197, 94, 0.15);
  background: var(--status-up-surface);
}

.connection-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.connection-badge.connected .connection-dot {
  background: var(--status-up);
  box-shadow: 0 0 8px var(--status-up-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

.config-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.config-badge .material-symbols-outlined {
  font-size: 16px;
}

/* ── Summary Bar ───────────────────────────────────────────────────────────── */
.summary-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.summary-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: all var(--transition);
}

.summary-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.summary-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.summary-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.summary-value.up { color: var(--status-up); }
.summary-value.down { color: var(--status-down); }
.summary-value.neutral { color: var(--text-primary); }

.summary-detail {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ── Stream Cards ──────────────────────────────────────────────────────────── */
.section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title .material-symbols-outlined {
  font-size: 20px;
  color: var(--primary);
}

.streams-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.stream-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.stream-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  opacity: 0;
  transition: opacity 300ms;
  pointer-events: none;
}

.stream-card.up::before {
  background: radial-gradient(ellipse at top right, var(--status-up-surface), transparent 70%);
  opacity: 1;
}

.stream-card.down::before {
  background: radial-gradient(ellipse at top right, var(--status-down-surface), transparent 70%);
  opacity: 1;
}

.stream-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stream-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
  position: relative;
}

.stream-info {
  flex: 1;
}

.stream-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.stream-url {
  font-size: 12px;
  color: var(--text-tertiary);
  font-family: 'SF Mono', 'Fira Code', monospace;
  word-break: break-all;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-indicator.up {
  background: var(--status-up-surface);
  color: var(--status-up);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.status-indicator.down {
  background: var(--status-down-surface);
  color: var(--status-down);
  border: 1px solid rgba(239, 68, 68, 0.2);
  animation: badge-pulse-red 2s ease-in-out infinite;
}

.status-indicator.unknown {
  background: rgba(107, 114, 128, 0.1);
  color: var(--status-unknown);
  border: 1px solid rgba(107, 114, 128, 0.2);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-dot.up {
  background: var(--status-up);
  box-shadow: 0 0 10px var(--status-up-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

.status-dot.down {
  background: var(--status-down);
  box-shadow: 0 0 10px var(--status-down-glow);
  animation: pulse-dot-red 1.5s ease-in-out infinite;
}

.status-dot.unknown {
  background: var(--status-unknown);
}

/* Stream metrics */
.stream-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  position: relative;
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.metric-value.good { color: var(--status-up); }
.metric-value.warn { color: #f59e0b; }
.metric-value.bad { color: var(--status-down); }

.metric-label {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

/* ── Live Audio Preview Player ──────────────────────────────────────────────── */
.audio-player-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--transition);
}

.audio-player-box:hover {
  border-color: var(--border-hover);
  background: var(--surface-3);
}

.play-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border: none;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(124, 106, 239, 0.3);
  transition: all var(--transition);
  flex-shrink: 0;
}

.play-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 6px 16px rgba(124, 106, 239, 0.4);
}

.play-btn .material-symbols-outlined {
  font-size: 24px;
}

.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.player-info {
  flex: 1;
  min-width: 0;
}

.player-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-subtitle {
  font-size: 11px;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}

.bullet-dot {
  font-size: 8px;
  color: var(--text-tertiary);
  opacity: 0.6;
}

.help-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--primary-surface);
  border: 1px solid rgba(124, 106, 239, 0.2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-light);
  cursor: pointer;
  transition: all var(--transition);
}

.help-btn:hover {
  background: rgba(124, 106, 239, 0.18);
  border-color: var(--primary-light);
  transform: translateY(-1px);
}

.help-btn .material-symbols-outlined {
  font-size: 16px;
}

/* ── Modal Overlay & Guide ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 18, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-card {
  background: var(--surface-1);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-xl);
  max-width: 620px;
  width: 100%;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-title .material-symbols-outlined {
  color: var(--primary);
  font-size: 20px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: 24px;
  cursor: pointer;
  transition: color var(--transition);
}

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

.modal-body {
  padding: 24px;
  max-height: 70vh;
  overflow-y: auto;
}

.guide-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.guide-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--primary-surface);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.guide-icon .material-symbols-outlined {
  font-size: 20px;
}

.guide-item h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.guide-item p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.guide-item code {
  background: var(--surface-3);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 11px;
  color: var(--primary-light);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 12px;
  color: var(--text-tertiary);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border: none;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(124, 106, 239, 0.4);
}

.visualizer-waves {
  display: none;
  align-items: flex-end;
  gap: 3px;
  height: 16px;
  margin-left: 4px;
}

.visualizer-waves.playing {
  display: flex;
}

.visualizer-bar {
  width: 3px;
  height: 4px;
  background: var(--primary-light);
  border-radius: 2px;
  transition: height 150ms;
}

.visualizer-waves.playing .visualizer-bar:nth-child(1) { animation: wave 800ms ease-in-out infinite alternate; }
.visualizer-waves.playing .visualizer-bar:nth-child(2) { animation: wave 600ms ease-in-out infinite alternate 150ms; }
.visualizer-waves.playing .visualizer-bar:nth-child(3) { animation: wave 900ms ease-in-out infinite alternate 300ms; }
.visualizer-waves.playing .visualizer-bar:nth-child(4) { animation: wave 750ms ease-in-out infinite alternate 450ms; }

@keyframes wave {
  from { height: 4px; }
  to { height: 16px; }
}

.silence-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  color: #f59e0b;
  margin-top: 8px;
}

/* Uptime bar */
.uptime-bar-container {
  position: relative;
}

.uptime-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  font-weight: 500;
}

.uptime-bar {
  height: 8px;
  background: var(--surface-3);
  border-radius: 100px;
  overflow: hidden;
  display: flex;
  gap: 1px;
}

.uptime-segment {
  height: 100%;
  min-width: 2px;
  border-radius: 1px;
  transition: background 300ms;
}

.uptime-segment.up { background: var(--status-up); }
.uptime-segment.down { background: var(--status-down); }
.uptime-segment.unknown { background: var(--surface-4); }

.stream-error {
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--status-down-surface);
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: #f87171;
  font-family: 'SF Mono', 'Fira Code', monospace;
  position: relative;
}

.stream-last-check {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-tertiary);
  text-align: right;
}

/* ── Incidents Timeline ────────────────────────────────────────────────────── */
.incidents-section {
  margin-bottom: 40px;
}

.incidents-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-tertiary);
}

.incidents-empty .material-symbols-outlined {
  font-size: 48px;
  margin-bottom: 12px;
  color: var(--text-tertiary);
  opacity: 0.4;
}

.incidents-empty p {
  font-size: 14px;
}

.incidents-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.incident {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.incident:hover {
  border-color: var(--border-hover);
  background: var(--surface-2);
}

.incident-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.incident-icon.down {
  background: var(--status-down-surface);
  color: var(--status-down);
}

.incident-icon.up {
  background: var(--status-up-surface);
  color: var(--status-up);
}

.incident-icon .material-symbols-outlined {
  font-size: 20px;
}

.incident-content {
  flex: 1;
  min-width: 0;
}

.incident-message {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.incident-time {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.incident-badge {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.incident-badge.down {
  background: var(--status-down-surface);
  color: var(--status-down);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.incident-badge.up {
  background: var(--status-up-surface);
  color: var(--status-up);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

/* ── Footer ────────────────────────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  color: var(--text-tertiary);
  font-size: 12px;
  margin-top: 20px;
}

/* ── Loading State ─────────────────────────────────────────────────────────── */
.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 16px;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--surface-3);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  color: var(--text-secondary);
  font-size: 14px;
}

/* ── Animations ────────────────────────────────────────────────────────────── */
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 6px var(--status-up-glow); }
  50% { box-shadow: 0 0 16px var(--status-up-glow), 0 0 24px var(--status-up-glow); }
}

@keyframes pulse-dot-red {
  0%, 100% { box-shadow: 0 0 6px var(--status-down-glow); }
  50% { box-shadow: 0 0 16px var(--status-down-glow), 0 0 24px var(--status-down-glow); }
}

@keyframes badge-pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
  50% { box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.08); }
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 400ms cubic-bezier(0.4, 0, 0.2, 1) both;
}

.slide-in {
  animation: slideInUp 500ms cubic-bezier(0.4, 0, 0.2, 1) both;
}

/* Staggered card animations */
.stream-card:nth-child(1) { animation-delay: 0ms; }
.stream-card:nth-child(2) { animation-delay: 80ms; }
.stream-card:nth-child(3) { animation-delay: 160ms; }

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .app { padding: 0 16px; }
  .header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .header-right { width: 100%; justify-content: flex-start; flex-wrap: wrap; }
  .streams-grid { grid-template-columns: 1fr; }
  .summary-bar { grid-template-columns: repeat(2, 1fr); }
  .stream-metrics { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .metric-value { font-size: 16px; }
  .incident { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .summary-bar { grid-template-columns: 1fr; }
}