@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Segoe+UI:wght@400;600;700&display=swap');

/* ==========================================================================
   THEME DEFINITIONS
   ========================================================================== */

/* 1. Dark Dev (Default - Modern Minimalist Black & Neon Green) */
:root, :root[data-theme="dark-dev"] {
  --bg-main: #050709;
  --bg-card: #0d1117;
  --bg-hover: #161b22;
  --bg-active: #21262d;
  --color-primary: #00ff88;
  --color-primary-hover: #00e67a;
  --color-primary-light: #5cffb1;
  --color-primary-text: #050709;
  --color-bubble-sent: #0f3824;
  --color-bubble-received: #161b22;
  --color-danger: #f85149;
  --color-danger-hover: #da3633;
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --border-color: #30363d;
  --radius-card: 12px;
  --radius-btn: 8px;
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --glow-primary: 0 0 20px rgba(0, 255, 136, 0.25);
}

/* 2. Microsoft Teams */
:root[data-theme="teams"] {
  --bg-main: #11100f;
  --bg-card: #1f1f1f;
  --bg-hover: #292929;
  --bg-active: #323130;
  --color-primary: #6264a7;
  --color-primary-hover: #4f518c;
  --color-primary-light: #8b8cc7;
  --color-primary-text: #ffffff;
  --color-bubble-sent: #3b3a4a;
  --color-bubble-received: #252423;
  --color-danger: #e81123;
  --color-danger-hover: #c40b1b;
  --text-main: #f5f5f5;
  --text-muted: #adadad;
  --border-color: #3b3a39;
  --radius-card: 8px;
  --radius-btn: 6px;
  --font-family: 'Segoe UI', system-ui, sans-serif;
  --glow-primary: none;
}

/* 3. WhatsApp Web */
:root[data-theme="whatsapp"] {
  --bg-main: #0b141a;
  --bg-card: #111b21;
  --bg-hover: #202c33;
  --bg-active: #222e35;
  --color-primary: #00a884;
  --color-primary-hover: #06cf9c;
  --color-primary-light: #25d366;
  --color-primary-text: #ffffff;
  --color-bubble-sent: #005c4b;
  --color-bubble-received: #202c33;
  --color-danger: #ea0038;
  --color-danger-hover: #c9002f;
  --text-main: #e9edef;
  --text-muted: #8696a0;
  --border-color: #222e35;
  --radius-card: 12px;
  --radius-btn: 20px;
  --font-family: 'Segoe UI', Helvetica, Arial, sans-serif;
  --glow-primary: none;
}

/* 3. Zoom */
:root[data-theme="zoom"] {
  --bg-main: #121212;
  --bg-card: #1e1e1e;
  --bg-hover: #2a2a2a;
  --bg-active: #333333;
  --color-primary: #0e71eb;
  --color-primary-hover: #187bf5;
  --color-primary-light: #4a9bff;
  --color-bubble-sent: #1558b0;
  --color-bubble-received: #2a2a2a;
  --color-danger: #eb1424;
  --color-danger-hover: #c90c1a;
  --text-main: #ffffff;
  --text-muted: #999999;
  --border-color: #2d2d2d;
  --radius-card: 10px;
  --radius-btn: 8px;
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Header */
.app-header {
  min-height: 52px;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 10;
  flex-wrap: wrap;
  gap: 10px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.brand-logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  filter: drop-shadow(0 0 8px rgba(0, 255, 136, 0.4));
  transition: transform 0.2s ease;
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.08);
}

.brand-logo-icon {
  width: 28px;
  height: 28px;
  background-color: var(--color-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-primary-text);
  font-size: 15px;
  transition: background-color 0.2s ease;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.select-pill {
  background-color: var(--bg-hover);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 12px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}

.select-pill:hover, .select-pill:focus {
  border-color: var(--color-primary);
}

.room-status {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: #107c41;
  display: inline-block;
}

.status-dot.idle {
  background-color: #a80000;
}

.status-dot.connecting {
  background-color: #ffaa44;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { opacity: 0.4; }
  50% { opacity: 1; }
  100% { opacity: 0.4; }
}

/* Setup/Welcome Page */
.setup-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-y: auto;
}

.setup-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  width: 100%;
  max-width: 440px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

.setup-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.setup-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.4;
}

.preview-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #000;
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-bottom: 18px;
  border: 1px solid var(--border-color);
}

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

.preview-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-hover);
  color: var(--text-muted);
  font-size: 13px;
  gap: 8px;
}

.avatar-large {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
}

.setup-controls {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 22px;
}

.btn-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: var(--bg-hover);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background-color: var(--bg-active);
  transform: scale(1.05);
}

.btn-icon.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

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

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

.btn-primary {
  width: 100%;
  padding: 12px;
  background-color: var(--color-primary);
  color: var(--color-primary-text, #fff);
  border: none;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--glow-primary, none);
  transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 0 25px rgba(0, 255, 136, 0.4);
}

.btn-primary:active {
  transform: scale(0.99);
}

.link-box {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.link-input {
  flex: 1;
  background-color: var(--bg-hover);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-btn);
  padding: 10px;
  font-size: 12px;
  outline: none;
}

.btn-copy {
  background-color: var(--color-primary);
  color: var(--color-primary-text, #fff);
  border: none;
  border-radius: var(--radius-btn);
  padding: 0 16px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}

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

/* Meeting Page */
.meeting-container {
  flex: 1;
  display: flex;
  position: relative;
  overflow: hidden;
  height: calc(100vh - 52px);
  height: calc(100dvh - 52px);
}

.video-area {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 14px;
  padding-bottom: 74px;
  background-color: var(--bg-main);
  height: 100%;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
}

.video-area.two-peers {
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 768px) {
  .video-area.two-peers {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }
}

.video-card {
  position: relative;
  background-color: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
}

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

.peer-video.remote-video {
  transform: none;
}

.peer-avatar-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-hover);
}

.peer-name {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

/* Floating Bottom Control Bar */
.control-bar {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  z-index: 20;
}

.control-separator {
  width: 1px;
  height: 24px;
  background-color: var(--border-color);
  margin: 0 2px;
}

/* Chat Sidebar */
.chat-sidebar {
  width: 340px;
  background-color: var(--bg-card);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.28s cubic-bezier(0.1, 0.9, 0.2, 1), width 0.28s;
  z-index: 15;
}

.chat-sidebar.collapsed {
  transform: translateX(100%);
  width: 0;
  overflow: hidden;
  border-left: none;
}

@media (max-width: 768px) {
  .chat-sidebar {
    position: absolute;
    right: 0;
    top: 0;
    width: 100%;
    max-width: 100%;
  }
}

.sidebar-header {
  height: 48px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 14px;
}

.chat-history {
  flex: 1;
  padding: 14px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-bubble {
  max-width: 82%;
  padding: 9px 13px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.4;
  word-break: break-word;
}

.chat-bubble.sent {
  align-self: flex-end;
  background-color: var(--color-bubble-sent);
  color: #fff;
  border-bottom-right-radius: 2px;
}

.chat-bubble.received {
  align-self: flex-start;
  background-color: var(--color-bubble-received);
  color: var(--text-main);
  border-bottom-left-radius: 2px;
  border: 1px solid var(--border-color);
}

.chat-bubble-author {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.system-log {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  padding: 6px;
  border-radius: 4px;
  background-color: rgba(255, 255, 255, 0.04);
}

.system-log.info {
  border-left: 3px solid var(--color-primary);
  text-align: left;
}

/* Chat Input */
.chat-input-area {
  padding: 12px;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-card);
}

.chat-input-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.chat-textbox {
  flex: 1;
  background-color: var(--bg-hover);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 9px 12px;
  border-radius: var(--radius-btn);
  outline: none;
  font-size: 13px;
}

.chat-textbox:focus {
  border-color: var(--color-primary);
}

.btn-attach, .btn-send {
  background-color: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
}

.btn-attach:hover, .btn-send:hover {
  color: var(--color-primary);
}

.btn-send:disabled, .btn-attach:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

#file-input-raw {
  display: none;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background-color: var(--bg-hover);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 4px;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background-color: var(--color-primary);
  transition: width 0.1s linear;
}

/* Link Actions Bar (Copy, Share, QR) */
.link-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.btn-secondary {
  flex: 1;
  background-color: var(--bg-hover);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 9px 12px;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background-color: var(--bg-active);
  border-color: var(--color-primary);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--color-primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Modal Overlay & QR Dialog */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  padding: 16px;
}

.modal-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 24px;
  max-width: 320px;
  width: 100%;
  text-align: center;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
  animation: modalPop 0.25s ease-out;
}

@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: 12px;
}

.modal-title {
  font-size: 17px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
}

.qr-image-box {
  background-color: #fff;
  padding: 16px;
  border-radius: 8px;
  display: inline-block;
  margin: 14px auto;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.qr-image-box img {
  display: block;
  width: 180px;
  height: 180px;
}