/* P2P Web Chat - Styles */

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #0f3460;
  --bg-input: #1a1a3e;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --text-muted: #6c6c7c;
  --accent: #4fc3f7;
  --accent-hover: #29b6f6;
  --danger: #ef5350;
  --danger-hover: #e53935;
  --success: #66bb6a;
  --warning: #ffa726;
  --border: #2a2a4e;
  --shadow: rgba(0, 0, 0, 0.3);
  --radius: 8px;
  --radius-sm: 4px;
  --msg-own: #1a3a5c;
  --msg-other: #2a2a4e;
  --msg-system: transparent;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

/* Screen Management */
.screen {
  display: none;
  height: 100vh;
}

.screen.active {
  display: flex;
}

/* Login Screen */
#login-screen {
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.login-container {
  background: var(--bg-secondary);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 8px 32px var(--shadow);
  width: 100%;
  max-width: 400px;
  border: 1px solid var(--border);
}

.login-container h1 {
  text-align: center;
  margin-bottom: 0.5rem;
  font-size: 1.8rem;
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group small {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: #000;
  width: 100%;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: var(--danger-hover);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  width: 100%;
}

.btn-icon {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: 0.6rem 0.8rem;
  font-size: 1.2rem;
  border: 1px solid var(--border);
}

.btn-icon:hover {
  background: var(--border);
}

/* Chat Layout */
.chat-layout {
  display: flex;
  height: 100vh;
  width: 100%;
}

/* Sidebar */
.sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-header h3 {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.badge {
  background: var(--accent);
  color: #000;
  padding: 0.1rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.peer-list {
  list-style: none;
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
}

.peer-list li {
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.peer-list li:hover {
  background: var(--bg-tertiary);
}

.peer-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
}

.peer-status.connecting {
  background: var(--warning);
}

.peer-status.disconnected {
  background: var(--danger);
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border);
}

.room-info {
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
}

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

.room-token {
  color: var(--accent);
  font-weight: 500;
  word-break: break-all;
}

/* Chat Main Area */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Messages */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.message {
  max-width: 70%;
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  line-height: 1.4;
  word-wrap: break-word;
}

.message.own {
  align-self: flex-end;
  background: var(--msg-own);
  border-bottom-right-radius: 2px;
}

.message.other {
  align-self: flex-start;
  background: var(--msg-other);
  border-bottom-left-radius: 2px;
}

.message.system {
  align-self: center;
  background: var(--msg-system);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-style: italic;
  padding: 0.3rem 0.8rem;
}

.file-download-link {
  color: var(--accent);
  text-decoration: underline;
  font-weight: bold;
  cursor: pointer;
}

.file-download-link:hover {
  color: var(--accent-hover);
}

.message-header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}

.message-nickname {
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--accent);
}

.message-time {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.message-content {
  word-break: break-word;
}

/* File Transfer Progress */
.transfers {
  padding: 0 1rem;
}

.transfer-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.transfer-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}

.transfer-filename {
  color: var(--text-primary);
  font-weight: 500;
}

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

.transfer-progress {
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
}

.transfer-progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.2s;
}

/* Input Area */
.input-area {
  padding: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

#message-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.9rem;
}

#message-input:focus {
  outline: none;
  border-color: var(--accent);
}

.input-area .btn-primary {
  width: auto;
  padding: 0.75rem 1.5rem;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  font-size: 0.85rem;
  box-shadow: 0 4px 12px var(--shadow);
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  max-width: 300px;
}

.toast.info {
  border-left: 3px solid var(--accent);
}

.toast.success {
  border-left: 3px solid var(--success);
}

.toast.warning {
  border-left: 3px solid var(--warning);
}

.toast.error {
  border-left: 3px solid var(--danger);
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* Drop Zone */
.drop-zone {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.drop-zone.active {
  display: flex;
}

.drop-zone-content {
  text-align: center;
  padding: 3rem;
  border: 3px dashed var(--accent);
  border-radius: 16px;
}

.drop-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
}

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

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

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

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

/* Screen Share Panel */
.screen-share-panel {
  position: fixed;
  bottom: 80px;
  right: 20px;
  width: 480px;
  height: 270px;
  background: #000;
  border-radius: 12px;
  border: 2px solid var(--accent);
  overflow: hidden;
  resize: both;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  min-width: 240px;
  min-height: 160px;
}

.screen-share-panel video {
  flex: 1;
  width: 100%;
  object-fit: contain;
  background: #000;
  min-height: 0;
}

.screen-share-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 12px;
  background: var(--bg-secondary);
  font-size: 0.85rem;
  cursor: move;
  user-select: none;
  flex-shrink: 0;
}

.screen-share-controls {
  display: flex;
  gap: 6px;
}

.btn-ss-ctrl {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  transition: background 0.2s, color 0.2s;
}

.btn-ss-ctrl:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-stop-share {
  background: var(--danger) !important;
  color: #fff !important;
  border-color: var(--danger) !important;
}

.btn-stop-share:hover {
  background: var(--danger-hover) !important;
}

.btn-icon:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-icon:disabled:hover {
  background: var(--bg-tertiary);
}

/* Media Preview (Image/Video in chat) */
.media-preview {
  margin: 6px 0;
  max-width: 320px;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
}

.preview-image {
  max-width: 100%;
  max-height: 300px;
  border-radius: 8px;
  display: block;
  object-fit: contain;
  transition: transform 0.2s;
}

.preview-image:hover {
  transform: scale(1.02);
}

.preview-video {
  max-width: 100%;
  max-height: 300px;
  border-radius: 8px;
  display: block;
}

/* Fullscreen Media Viewer */
.media-viewer {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  cursor: zoom-out;
}

.viewer-content {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
  cursor: default;
}

.viewer-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.viewer-close:hover {
  background: rgba(255,255,255,0.3);
}

.viewer-download {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: var(--accent);
  color: #000;
  text-decoration: none;
  font-size: 1.2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.viewer-download:hover {
  background: var(--accent-hover);
}

/* Video Call Panel */
.video-call-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80vw;
  max-width: 900px;
  height: 70vh;
  max-height: 600px;
  background: #000;
  border-radius: 12px;
  border: 2px solid var(--accent);
  overflow: hidden;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 48px rgba(0,0,0,0.7);
}

.video-call-panel.minimized {
  width: 280px;
  height: 200px;
  top: auto;
  left: auto;
  bottom: 80px;
  right: 20px;
  transform: none;
}

.video-call-panel.minimized .remote-videos {
  display: none;
}

.video-call-panel.minimized .local-video-wrapper {
  flex: 1;
}

.video-call-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-secondary);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.video-call-header-controls {
  display: flex;
  gap: 6px;
}

.video-call-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  min-height: 0;
  background: #111;
}

.remote-videos {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 4px;
  min-height: 0;
}

.remote-video-container {
  position: relative;
  background: #1a1a1a;
  border-radius: 8px;
  overflow: hidden;
}

.remote-video-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.remote-video-label {
  position: absolute;
  bottom: 8px;
  left: 8px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

.local-video-wrapper {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 160px;
  height: 120px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--accent);
  background: #1a1a1a;
  z-index: 2;
}

.video-call-panel.minimized .local-video-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  bottom: auto;
  right: auto;
  border: none;
}

.local-video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

.local-video-label {
  position: absolute;
  bottom: 4px;
  left: 6px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.7rem;
}

.video-call-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 10px;
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.btn-call {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transition: background 0.2s, transform 0.1s;
}

.btn-call:hover {
  background: var(--border);
  transform: scale(1.05);
}

.btn-call:active {
  transform: scale(0.95);
}

.btn-call.muted {
  background: var(--warning);
  color: #000;
}

.btn-call-end {
  background: var(--danger) !important;
  color: #fff !important;
}

.btn-call-end:hover {
  background: var(--danger-hover) !important;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 60px;
    min-width: 60px;
  }

  .sidebar-header h3,
  .peer-list li span:not(.peer-status),
  .room-info,
  .sidebar-footer .btn {
    display: none;
  }

  .sidebar-header {
    justify-content: center;
  }

  .peer-list li {
    justify-content: center;
    padding: 0.6rem;
  }

  .sidebar-footer {
    display: none;
  }

  .message {
    max-width: 85%;
  }

  .login-container {
    margin: 1rem;
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .sidebar {
    display: none;
  }

  .input-area {
    padding: 0.5rem;
  }
}