/* ========================================================
   CHZZK MultiView - Discord Inspired Dark Theme CSS
   ======================================================== */

:root {
  --bg-primary: #0f1012;
  --bg-secondary: #1a1b1e;
  --bg-tertiary: #23252a;
  --bg-overlay: rgba(15, 16, 18, 0.85);
  --text-main: #f2f3f5;
  --text-muted: #949ba4;
  --accent-chzzk: #00ffa3;
  --accent-discord: #5865f2;
  --accent-danger: #f23f43;
  --accent-warning: #fee75c;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  overflow: hidden;
  user-select: none;
}

.app-container {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
  position: relative;
}

/* ========================================================
   Header / Navbar
   ======================================================== */
.navbar {
  height: 56px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
  flex-shrink: 0;
  gap: 16px;
}

.nav-left .brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.5px;
}

.brand-icon {
  color: var(--accent-chzzk);
  font-size: 1.25rem;
  animation: pulse 2s infinite ease-in-out;
}

.brand-title {
  color: #fff;
}

.brand-badge {
  background: linear-gradient(135deg, var(--accent-discord), #7289da);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

/* Search Box */
.nav-center {
  flex: 1;
  max-width: 460px;
  position: relative;
}

.search-box-wrapper {
  position: relative;
  width: 100%;
}

.search-input-group {
  display: flex;
  align-items: center;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 4px 6px 4px 12px;
  transition: border-color var(--transition-fast);
}

.search-input-group:focus-within {
  border-color: var(--accent-chzzk);
}

.search-icon {
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
  stroke-width: 2.2;
  margin-right: 8px;
}

.search-input-group input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 0.9rem;
  font-family: inherit;
}

.search-input-group input::placeholder {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  outline: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--accent-chzzk);
  color: #000;
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn-primary:hover {
  background-color: #33ffb5;
  transform: translateY(-1px);
}

.btn-icon {
  width: 36px;
  height: 36px;
  background-color: var(--bg-tertiary);
  color: var(--text-main);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
}

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

.nav-right .layout-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Dropdown Autocomplete */
.search-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  max-height: 320px;
  overflow-y: auto;
  z-index: 200;
}

.dropdown-item {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  gap: 12px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--bg-tertiary);
}

.dropdown-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  background-color: var(--bg-primary);
}

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

.dropdown-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.live-badge {
  font-size: 0.65rem;
  background-color: var(--accent-danger);
  color: #fff;
  padding: 1px 5px;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.live-badge.off {
  background-color: #4e5058;
}

.dropdown-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ========================================================
   Main Player Grid
   ======================================================== */
.player-main {
  flex: 1;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-primary);
}

.video-grid {
  width: 100%;
  height: 100%;
  display: grid;
  gap: 4px;
  padding: 4px;
  background-color: #000;
}

/* Grid layout variants based on number of active streams */
.grid-1 {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
}

.grid-2 {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}

.grid-3 .video-slot:first-child {
  grid-column: 1 / span 2;
}

.grid-4 {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}

@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }
}

/* Video Slot Card */
.video-slot {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: #000;
  overflow: hidden;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-slot video,
.video-slot iframe {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background-color: #000;
  border: none;
}

.youtube-badge {
  background: #ff0000;
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.youtube-slot .slot-top-bar {
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.youtube-slot:hover .slot-top-bar {
  opacity: 1;
}

/* Slot Hover Controls Overlay */
.slot-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 10px;
  background: linear-gradient(180deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0) 25%, rgba(0,0,0,0) 75%, rgba(0,0,0,0.85) 100%);
}

.video-slot:hover .slot-overlay,
.slot-overlay.active {
  opacity: 1;
}

/* Top bar in slot */
.slot-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
  gap: 8px;
}

.streamer-info {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-overlay);
  padding: 4px 8px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
  max-width: 60%;
}

.streamer-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}

.streamer-text {
  min-width: 0;
}

.streamer-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #fff;
}

.streamer-viewers {
  font-size: 0.72rem;
  color: var(--accent-chzzk);
}

.slot-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.slot-btn {
  background-color: var(--bg-overlay);
  border: 1px solid var(--border-color);
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  pointer-events: auto;
  transition: background-color var(--transition-fast);
  backdrop-filter: blur(8px);
}

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

.slot-btn.btn-solo.active {
  background-color: var(--accent-chzzk);
  color: #000;
  font-weight: 700;
}

.slot-btn.btn-close:hover {
  background-color: var(--accent-danger);
}

/* Bottom bar in slot */
.slot-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
  background-color: var(--bg-overlay);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}

.volume-control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.volume-slider {
  width: 70px;
  cursor: pointer;
  accent-color: var(--accent-chzzk);
}

.quality-select {
  background: var(--bg-tertiary);
  color: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-size: 0.75rem;
  outline: none;
}

/* Unmute Overlay Banner */
.unmute-banner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.85);
  border: 2px solid var(--accent-chzzk);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 4px 20px rgba(0, 255, 163, 0.3);
  animation: pulse 1.8s infinite;
  z-index: 10;
}

/* Offline state card inside slot */
.slot-offline {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  text-align: center;
  padding: 20px;
}

.slot-offline img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  opacity: 0.6;
}

/* ========================================================
   Empty State (Zero channels)
   ======================================================== */
.empty-state {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background-color: var(--bg-primary);
}

.empty-card {
  max-width: 540px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.empty-icon {
  font-size: 3.5rem;
  margin-bottom: 12px;
}

.empty-card h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.empty-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 24px;
}

.preset-section {
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}

.preset-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
}

.preset-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.chip {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chip:hover {
  background-color: var(--accent-discord);
  border-color: var(--accent-discord);
  color: #fff;
  transform: translateY(-2px);
}

/* ========================================================
   Toast Notification
   ======================================================== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #2b2d31;
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 6px 20px rgba(0,0,0,0.5);
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 1000;
  pointer-events: none;
  border-left: 4px solid var(--accent-chzzk);
  transition: opacity 0.3s ease;
}

.hidden {
  display: none !important;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}