/* ===================================================================
   DUCK CAM LIVE — Modern Glassmorphic Dark Theme Design System
   =================================================================== */

:root {
  /* Color Palette */
  --bg-base: #060b0f;
  --bg-surface: rgba(13, 22, 31, 0.75);
  --bg-surface-hover: rgba(19, 32, 45, 0.85);
  --bg-card: rgba(15, 27, 38, 0.65);
  --bg-glass-border: rgba(56, 189, 248, 0.12);
  --bg-glass-border-hover: rgba(56, 189, 248, 0.3);

  /* Brand Accents */
  --duck-yellow: #facc15;
  --duck-yellow-hover: #eab308;
  --duck-orange: #fb923c;
  --pond-cyan: #38bdf8;
  --pond-teal: #14b8a6;
  --pond-emerald: #10b981;
  --live-red: #ef4444;
  --live-red-glow: rgba(239, 68, 68, 0.4);

  /* Text & Foreground */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Typography */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Shadows & Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-subtle: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
  --shadow-glow-cyan: 0 0 25px rgba(56, 189, 248, 0.2);
  --shadow-glow-yellow: 0 0 25px rgba(250, 204, 21, 0.25);
}

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

body.dark-theme {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Subtle Shimmering Pond Background */
.water-shimmer-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    radial-gradient(circle at 15% 20%, rgba(14, 165, 233, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(20, 184, 166, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(250, 204, 21, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* Glassmorphism Panel */
.glass-panel {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-subtle);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
  border-color: var(--bg-glass-border-hover);
}

/* Floating Quacks & Hearts Animation Container */
.floating-quacks-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  overflow: hidden;
}

.floating-quack-item {
  position: absolute;
  bottom: 50px;
  font-size: 28px;
  animation: floatUpAndFade 3s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.5));
}

@keyframes floatUpAndFade {
  0% {
    transform: translateY(0) scale(0.6) rotate(0deg);
    opacity: 0;
  }
  20% {
    transform: translateY(-50px) scale(1.2) rotate(-10deg);
    opacity: 1;
  }
  80% {
    transform: translateY(-260px) scale(1) rotate(15deg);
    opacity: 0.9;
  }
  100% {
    transform: translateY(-380px) scale(0.8) rotate(30deg);
    opacity: 0;
  }
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 11, 15, 0.82);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--bg-glass-border);
  padding: 12px 24px;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-wrapper {
  position: relative;
  width: 48px;
  height: 48px;
}

.mascot-img {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  border: 2px solid var(--duck-yellow);
  object-fit: cover;
  box-shadow: 0 0 12px rgba(250, 204, 21, 0.4);
}

.live-dot-pulse {
  position: absolute;
  top: 0;
  right: 0;
  width: 13px;
  height: 13px;
  background: var(--live-red);
  border: 2px solid var(--bg-base);
  border-radius: var(--radius-full);
  box-shadow: 0 0 8px var(--live-red);
  animation: pulseBeacon 1.8s infinite;
}

@keyframes pulseBeacon {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.accent-text {
  color: var(--duck-yellow);
}

.brand-tagline {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-live {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.35);
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--live-red);
  box-shadow: 0 0 6px var(--live-red);
  animation: blink 1.2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Header Buttons & Stats */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.stat-pill .icon {
  width: 16px;
  height: 16px;
  color: var(--pond-cyan);
}

.pill-label {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 12px;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.pill-btn .icon {
  width: 16px;
  height: 16px;
}

.highlight-btn {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: white;
  border: 1px solid rgba(56, 189, 248, 0.3);
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.3);
}

.highlight-btn:hover {
  background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
  transform: translateY(-1px);
}

.ghost-btn {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.ghost-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

/* Layout */
.main-layout {
  position: relative;
  z-index: 1;
  padding: 24px 20px 60px;
}

.content-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Hero Player Card */
.player-card {
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(56, 189, 248, 0.18);
  box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.8), var(--shadow-glow-cyan);
}

.video-aspect-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #020617;
  overflow: hidden;
}

.duck-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #000;
  transition: filter 0.2s ease;
}

.duck-img-fallback {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Standby Overlay */
.video-overlay-standby {
  position: absolute;
  inset: 0;
  background: rgba(6, 11, 15, 0.88);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  padding: 24px;
  text-align: center;
}

.standby-content {
  max-width: 440px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.duck-spinner {
  font-size: 48px;
  animation: duckWaddle 1s infinite alternate ease-in-out;
}

@keyframes duckWaddle {
  0% { transform: rotate(-10deg) translateY(-5px); }
  100% { transform: rotate(10deg) translateY(5px); }
}

.standby-content h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--text-main);
}

.standby-content p {
  font-size: 13px;
  color: var(--text-muted);
}

/* HUD Overlay */
.video-hud {
  position: absolute;
  left: 0;
  right: 0;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  z-index: 5;
}

.top-hud {
  top: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.75) 0%, transparent 100%);
}

.hud-left, .hud-right {
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
}

.hud-pill {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-weight: 600;
}

.hud-live {
  color: #f87171;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ping-circle {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--live-red);
  box-shadow: 0 0 6px var(--live-red);
}

.hud-time {
  font-family: var(--font-mono);
  color: var(--text-main);
}

.hud-device {
  font-family: var(--font-mono);
  color: var(--pond-cyan);
}

.hud-icon-btn {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.hud-icon-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.hud-icon-btn .icon {
  width: 18px;
  height: 18px;
}

/* Snapshot Flash */
.snapshot-flash {
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  pointer-events: none;
  z-index: 20;
  transition: opacity 0.4s ease-out;
}

.snapshot-flash.flash-active {
  opacity: 0.9;
  transition: opacity 0.05s ease-in;
}

/* Player Control Bar */
.player-control-bar {
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 19, 28, 0.9);
  border-top: 1px solid var(--bg-glass-border);
  flex-wrap: wrap;
  gap: 12px;
}

.controls-left, .controls-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Segmented Control */
.segmented-control {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  padding: 3px;
}

.segment-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.segment-btn:hover {
  color: var(--text-main);
}

.segment-btn.active {
  background: var(--pond-cyan);
  color: #032b43;
  box-shadow: 0 2px 8px rgba(56, 189, 248, 0.3);
}

/* Control Buttons */
.control-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.control-btn .icon {
  width: 16px;
  height: 16px;
  color: var(--duck-yellow);
}

/* Interactive Pond Bar */
.interactive-bar-card {
  padding: 18px 24px;
  background: linear-gradient(135deg, rgba(14, 28, 41, 0.85) 0%, rgba(10, 20, 30, 0.75) 100%);
  border: 1px solid rgba(250, 204, 21, 0.25);
  box-shadow: var(--shadow-glow-yellow);
}

.interactive-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.action-btn-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  text-align: left;
}

.action-btn:hover {
  transform: translateY(-3px) scale(1.02);
}

.action-btn:active {
  transform: translateY(1px) scale(0.98);
}

.action-icon {
  font-size: 28px;
  line-height: 1;
}

.action-text strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
}

.action-counter {
  font-size: 12px;
  opacity: 0.85;
}

.btn-quack {
  background: linear-gradient(135deg, #facc15 0%, #ca8a04 100%);
  color: #422006;
}

.btn-quack:hover {
  box-shadow: 0 8px 25px rgba(250, 204, 21, 0.4);
}

.btn-feed {
  background: linear-gradient(135deg, #10b981 0%, #047857 100%);
  color: #022c22;
}

.btn-feed:hover {
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.btn-heart {
  background: linear-gradient(135deg, #f43f5e 0%, #be123c 100%);
  color: #fff;
}

.btn-heart:hover {
  box-shadow: 0 8px 25px rgba(244, 63, 94, 0.4);
}

.interactive-status-message {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  padding-top: 4px;
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.dash-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-icon-box {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-icon-box svg {
  width: 22px;
  height: 22px;
}

.tailscale-icon {
  background: rgba(14, 165, 233, 0.15);
  color: var(--pond-cyan);
  border: 1px solid rgba(14, 165, 233, 0.3);
}

.stream-icon {
  background: rgba(16, 185, 129, 0.15);
  color: var(--pond-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.chat-icon {
  background: rgba(250, 204, 21, 0.15);
  color: var(--duck-yellow);
  border: 1px solid rgba(250, 204, 21, 0.3);
}

.photo-icon {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.status-indicator {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

.status-indicator.active {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Tailscale Card Specifics */
.url-share-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.input-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.copy-input-row {
  display: flex;
  gap: 8px;
}

.custom-input {
  flex: 1;
  background: rgba(8, 15, 23, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--pond-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  outline: none;
}

.custom-input:focus {
  border-color: var(--pond-cyan);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.25);
}

.tailscale-quick-tips {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.tip-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.tip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pond-cyan);
  margin-top: 6px;
  flex-shrink: 0;
}

.tip-item code {
  background: rgba(0, 0, 0, 0.5);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  color: #38bdf8;
  font-size: 12px;
}

.card-actions-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Telemetry Card Specifics */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.metric-item {
  background: rgba(8, 15, 23, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 12px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric-val {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.code-font {
  font-family: var(--font-mono);
  color: var(--pond-emerald);
}

/* Fine tuning sliders */
.controls-accordion {
  background: rgba(8, 15, 23, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.accordion-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
}

.slider-row label {
  width: 70px;
  color: var(--text-muted);
}

.slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--duck-yellow);
}

.slider-row span {
  width: 40px;
  text-align: right;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

/* Activity Log */
.activity-log-scroll {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 6px;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(8, 15, 23, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.act-badge {
  font-size: 18px;
}

.act-text {
  flex: 1;
}

.act-user {
  font-weight: 700;
  color: var(--pond-cyan);
}

.act-time {
  font-size: 11px;
  color: var(--text-dim);
}

/* Snapshot Gallery Grid */
.snapshot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.snapshot-thumb-item {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.snapshot-thumb-item:hover {
  transform: scale(1.03);
  border-color: var(--duck-yellow);
}

.snapshot-thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.snap-tag {
  position: absolute;
  bottom: 6px;
  left: 6px;
  font-size: 10px;
  background: rgba(0, 0, 0, 0.7);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

/* General Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn .icon {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: var(--pond-cyan);
  color: #082f49;
}

.btn-primary:hover {
  background: #7dd3fc;
  box-shadow: 0 4px 15px rgba(56, 189, 248, 0.35);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-main);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.w-100 {
  width: 100%;
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 12, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
}

.modal-dialog {
  width: 100%;
  max-width: 480px;
  background: #0f1c29;
  border: 1px solid var(--bg-glass-border-hover);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-lg {
  max-width: 650px;
}

@keyframes modalPop {
  0% { transform: scale(0.92); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}

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

.qr-code-box {
  background: white;
  padding: 16px;
  border-radius: var(--radius-md);
  display: inline-block;
  margin: 16px 0;
}

.qr-url-text {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pond-cyan);
  word-break: break-all;
  margin-bottom: 16px;
}

.guide-step {
  margin-bottom: 18px;
}

.guide-step h4 {
  font-size: 15px;
  color: var(--duck-yellow);
  margin-bottom: 6px;
}

.guide-step p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.code-block {
  background: #04090e;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #38bdf8;
  overflow-x: auto;
}

/* Footer */
.app-footer {
  margin-top: 40px;
  border-top: 1px solid var(--bg-glass-border);
  padding: 20px 24px;
  font-size: 12px;
  color: var(--text-dim);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .app-header {
    padding: 12px 16px;
  }
  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
  .action-btn-group {
    grid-template-columns: 1fr;
  }
  .player-control-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .controls-left, .controls-right {
    justify-content: space-between;
  }
}