* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Dark theme with subtle blue tint */
  --bg-dark: #0a0a0f;
  --bg-gradient: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0f0f1a 100%);

  /* Glass colors */
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-bg-hover: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-border-light: rgba(255, 255, 255, 0.25);
  --glass-shadow: rgba(0, 0, 0, 0.4);

  /* Input styling */
  --input-bg: rgba(0, 0, 0, 0.3);
  --input-border: rgba(255, 255, 255, 0.1);
  --input-focus: rgba(88, 166, 255, 0.5);

  /* Text colors */
  --text: #f0f0f5;
  --text-muted: rgba(255, 255, 255, 0.6);
  --text-dim: rgba(255, 255, 255, 0.4);

  /* Accent colors */
  --accent: #58a6ff;
  --accent-glow: rgba(88, 166, 255, 0.4);
  --p2p: #3fb950;
  --p2p-glow: rgba(63, 185, 80, 0.4);
  --http: #58a6ff;
  --local: #a855f7;
  --local-glow: rgba(168, 85, 247, 0.4);

  /* Status colors */
  --pending: rgba(255, 255, 255, 0.15);
  --downloading: #d29922;
  --downloading-glow: rgba(210, 153, 34, 0.4);
  --failed: #f85149;
}

html,
body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Background image */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('/Slick1x1.webp') center center / cover no-repeat fixed;
  z-index: -2;
  transition: opacity 0.5s ease;
}

body.custom-background::before {
  opacity: 0;
}

/* Dark overlay for better contrast */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: -1;
}

.screen {
  min-height: 100vh;
}

/* Glass Card Base */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow:
    0 8px 32px var(--glass-shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

/* Glass card shine effect */
.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.2) 20%,
      rgba(255, 255, 255, 0.3) 50%,
      rgba(255, 255, 255, 0.2) 80%,
      transparent);
  pointer-events: none;
}

/* Login/Upload Screen */
#login-screen,
#upload-screen,
#join-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-box {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  text-align: center;
  box-shadow:
    0 8px 32px var(--glass-shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

/* Top shine */
.login-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.3) 50%,
      transparent);
}

.login-box h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 50%, var(--p2p) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.subtitle {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 1rem;
}

/* Input Styling */
.input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.input-group input,
input[type="text"],
input[type="password"] {
  flex: 1;
  padding: 14px 18px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 12px;
  color: var(--text);
  font-size: 1rem;
  transition: all 0.2s ease;
}

.input-group input:focus,
input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

.input-group input::placeholder,
input::placeholder {
  color: var(--text-dim);
}

.input-group button {
  padding: 14px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s ease;
  color: var(--text);
}

.input-group button:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-light);
}

/* Primary Button */
.primary-btn {
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--accent) 0%, #3d8bff 100%);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 16px var(--accent-glow);
  position: relative;
  overflow: hidden;
}

.primary-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.2), transparent);
  pointer-events: none;
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

.primary-btn:active {
  transform: translateY(0);
}

.info {
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Main Screen */
#main-screen {
  display: flex;
  height: 100vh;
}

.left-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-right: 1px solid var(--glass-border);
  overflow-y: auto;
  overflow-x: hidden;
}

.right-panel {
  width: 340px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.3s ease,
              margin-right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 10;
  overflow: hidden;
}

.right-panel.hidden {
  width: 0;
  opacity: 0;
  pointer-events: none;
}

/* Panel Toggle Button */
.panel-toggle {
  position: fixed;
  right: 340px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  width: 28px;
  height: 56px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-right: none;
  border-radius: 8px 0 0 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              background 0.2s ease,
              color 0.2s ease;
}

.panel-toggle:hover {
  background: var(--glass-bg-hover);
  color: var(--text);
}

.panel-toggle svg {
  transition: transform 0.3s ease;
}

.panel-toggle.collapsed {
  right: 0;
}

.panel-toggle.collapsed svg {
  transform: rotate(180deg);
}

.panel-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
}

.peer-badge {
  font-size: 0.875rem;
  font-weight: normal;
  color: var(--text-muted);
}

.peer-badge strong {
  color: var(--accent);
}

.room-badge {
  font-size: 0.75rem;
  background: var(--glass-bg);
  padding: 6px 12px;
  border-radius: 20px;
  color: var(--text-muted);
  border: 1px solid var(--glass-border);
}

#video-container {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  min-height: 300px;
  position: relative;
}

#video-container:not(.expanded) {
  flex: 1;
}

#video-container.expanded {
  width: 100%;
}

#video-player {
  max-width: 100%;
  max-height: 100%;
  border-radius: 0;
  background: transparent;
}

#video-container.expanded #video-player {
  width: 100%;
  height: auto;
}

/* Processing/Waiting Areas */
#processing-area,
#waiting-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.processing-content,
.waiting-content {
  text-align: center;
  color: var(--text-muted);
}

.progress-bar {
  background: var(--input-bg);
  border-radius: 10px;
  height: 6px;
  overflow: hidden;
  margin-top: 16px;
  width: 300px;
  border: 1px solid var(--glass-border);
}

.progress-fill {
  background: linear-gradient(90deg, var(--accent), var(--p2p));
  height: 100%;
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 10px;
}

/* Upload Area */
#upload-area {
  padding: 48px 40px;
  border: 2px dashed var(--glass-border);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 16px;
  background: var(--glass-bg);
}

#upload-area:hover,
#upload-area.dragover {
  border-color: var(--accent);
  background: rgba(88, 166, 255, 0.08);
  box-shadow: 0 0 30px rgba(88, 166, 255, 0.1);
}

.upload-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
  filter: grayscale(0.3);
}

#upload-area p {
  color: var(--text-muted);
  margin: 6px 0;
}

#upload-area .small {
  font-size: 0.875rem;
  color: var(--text-dim);
}

/* Success state */
.success {
  color: var(--p2p);
  font-weight: 600;
  margin-bottom: 16px;
}

/* Link box */
.link-box {
  display: flex;
  gap: 8px;
}

.link-box input {
  flex: 1;
  padding: 14px 18px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 12px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.link-box button {
  padding: 14px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.2s ease;
}

.link-box button:hover {
  background: var(--glass-bg-hover);
}

/* Chunk Map */
.chunk-section {
  padding: 20px 24px;
  border-top: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, 0.1);
}

.chunk-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 0.85rem;
  font-weight: 500;
}

.chunk-legend {
  display: flex;
  gap: 16px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
}

.dot.pending {
  background: var(--pending);
}

.dot.downloading {
  background: var(--downloading);
}

.dot.p2p {
  background: var(--p2p);
}

.dot.http {
  background: var(--http);
}

.dot.local {
  background: var(--local);
}

#chunk-map {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-height: 140px;
  overflow-y: auto;
  padding: 4px;
}

.chunk {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--pending);
  transition: all 0.2s ease;
}

.chunk.downloading {
  background: var(--downloading);
  box-shadow: 0 0 8px var(--downloading-glow);
}

.chunk.p2p {
  background: var(--p2p);
  box-shadow: 0 0 8px var(--p2p-glow);
}

.chunk.http {
  background: var(--http);
  box-shadow: 0 0 8px var(--accent-glow);
}

.chunk.local {
  background: var(--local);
  box-shadow: 0 0 8px var(--local-glow);
}

.chunk.failed {
  background: var(--failed);
}

.chunk.rotated {
  background: var(--text-dim);
  opacity: 0.3;
}

.chunk.expired {
  background: #333;
  opacity: 0.2;
}

/* Chunk ping animation for upload requests */
@keyframes chunk-ping {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.6);
  }

  50% {
    box-shadow: 0 0 12px 4px rgba(255, 255, 255, 0.4);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
  }
}

.chunk.ping {
  animation: chunk-ping 0.4s ease-out;
}

/* Transfer Section (contains stats and chunk map) */
.transfer-section {
  border-top: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

/* Stats Bar */
.stats-bar {
  display: flex;
  padding: 20px 24px;
  gap: 32px;
  border-bottom: 1px solid var(--glass-border);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 600;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.stat-value.p2p {
  color: var(--p2p);
  text-shadow: 0 0 20px var(--p2p-glow);
}

.stat-value.http {
  color: var(--http);
  text-shadow: 0 0 20px var(--accent-glow);
}

/* Peer List */
.peer-header {
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--glass-border);
  font-weight: 500;
}

.count-badge {
  background: var(--glass-bg);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  border: 1px solid var(--glass-border);
  color: var(--text);
}

.peer-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.no-peers {
  padding: 32px 20px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.875rem;
}

.peer-item {
  padding: 16px;
  background: var(--glass-bg);
  border-radius: 12px;
  margin-bottom: 10px;
  border: 1px solid var(--glass-border);
  border-left: 3px solid var(--pending);
  transition: all 0.2s ease;
}

.peer-item:hover {
  background: var(--glass-bg-hover);
}

.peer-item.connected {
  border-left-color: var(--p2p);
}

.peer-item.disconnected {
  border-left-color: var(--failed);
  opacity: 0.6;
}

.peer-name {
  font-weight: 600;
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.peer-stats {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
  margin-bottom: 6px;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.peer-stats .upload {
  color: var(--p2p);
}

.peer-stats .download {
  color: var(--http);
}

.peer-chunks {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* Responsive */
@media (max-width: 768px) {
  #main-screen {
    flex-direction: column;
  }

  .right-panel {
    width: 100%;
    max-height: 45vh;
  }

  .right-panel.hidden {
    max-height: 0;
  }

  .panel-toggle {
    position: fixed;
    right: 50%;
    top: auto;
    bottom: 45vh;
    transform: translateX(50%);
    width: 56px;
    height: 28px;
    border-radius: 8px 8px 0 0;
    border: 1px solid var(--glass-border);
    border-bottom: none;
  }

  .panel-toggle.collapsed {
    right: 50%;
    bottom: 0;
  }

  .panel-toggle svg {
    transform: rotate(90deg);
  }

  .panel-toggle.collapsed svg {
    transform: rotate(-90deg);
  }

  .left-panel {
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
  }

  .login-box {
    padding: 32px 24px;
    margin: 16px;
  }

  .login-box h1 {
    font-size: 2rem;
  }
}

/* Quality Selector */
.quality-selector {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.7);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: white;
  z-index: 10;
  backdrop-filter: blur(4px);
}

.quality-selector .quality-icon {
  font-weight: 600;
  color: var(--accent);
  font-size: 11px;
}

.quality-selector select {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
}

.quality-selector select:focus {
  outline: none;
  border-color: var(--accent);
}

.quality-selector select option {
  background: #1a1a1a;
  color: white;
}

.quality-selector .quality-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 11px;
}

/* File Area */
.file-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  min-height: 300px;
}

.file-ready,
.file-downloading,
.file-complete {
  text-align: center;
  padding: 40px;
}

.file-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.file-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  word-break: break-all;
}

.file-size {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.file-status {
  color: var(--p2p);
  font-weight: 500;
}

.file-downloading .file-status {
  color: var(--downloading);
}

.file-complete .file-icon {
  color: var(--p2p);
}

/* Download Section */
.download-section {
  padding: 20px 24px;
  border-top: 1px solid var(--glass-border);
}

.download-section .primary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.download-section .primary-btn.ready {
  background: linear-gradient(135deg, var(--p2p) 0%, #2ea043 100%);
  box-shadow: 0 4px 16px var(--p2p-glow);
}

/* Complete chunk status */
.chunk.complete {
  background: var(--p2p);
  box-shadow: 0 0 8px var(--p2p-glow);
}

.dot.complete {
  background: var(--p2p);
}