*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, sans-serif;
    background: var(--md-background);
    color: var(--md-on-background);
}

/* ── App title ── */

.app-title {
    font-family: 'Bungee', sans-serif;
    font-size: 3.5rem;
    color: var(--md-primary);
    text-align: center;
    user-select: none;
}

#center-panel .app-title {
    font-size: 4.5rem;
    line-height: 1;
}

#title-area {
    flex-shrink: 0;
    position: relative;
}

#walkers-stage {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 48px;
    pointer-events: none;
    overflow: visible;
}

/* ── SVG walkers ── */

.walker {
    position: absolute;
    bottom: 0;
    width: 20px;
}

.walker svg {
    overflow: visible;
    display: block;
}

/* Limb pivot: top-center of each element's own bounding box */
.walker-arm-l,
.walker-arm-r,
.walker-leg-l,
.walker-leg-r {
    transform-box: fill-box;
    transform-origin: top center;
}

/* ── Idle ── */
.walker.idle .walker-arm-l { transform: rotate(14deg); }
.walker.idle .walker-arm-r { transform: rotate(-14deg); }

/* ── Walking ── */
@keyframes wk-arm-l { from { transform: rotate(42deg); } to { transform: rotate(-42deg); } }
@keyframes wk-arm-r { from { transform: rotate(-42deg); } to { transform: rotate(42deg); } }
@keyframes wk-leg-l { from { transform: rotate(-34deg); } to { transform: rotate(34deg); } }
@keyframes wk-leg-r { from { transform: rotate(34deg); } to { transform: rotate(-34deg); } }

.walker.walking .walker-arm-l { animation: wk-arm-l 0.55s ease-in-out infinite alternate; }
.walker.walking .walker-arm-r { animation: wk-arm-r 0.55s ease-in-out infinite alternate; }
.walker.walking .walker-leg-l { animation: wk-leg-l 0.55s ease-in-out infinite alternate; }
.walker.walking .walker-leg-r { animation: wk-leg-r 0.55s ease-in-out infinite alternate; }

/* ── Vibing ── */
@keyframes vb-sway  { 0%, 100% { transform: rotate(-4deg); } 50% { transform: rotate(4deg); } }
@keyframes vb-arm-l { 0%, 100% { transform: rotate(28deg); } 50% { transform: rotate(-8deg); } }
@keyframes vb-arm-r { 0%, 100% { transform: rotate(-28deg); } 50% { transform: rotate(8deg); } }
@keyframes vb-leg-l { 0%, 100% { transform: rotate(-6deg); } 50% { transform: rotate(6deg); } }
@keyframes vb-leg-r { 0%, 100% { transform: rotate(6deg); } 50% { transform: rotate(-6deg); } }

.walker.vibing svg           { animation: vb-sway  1.6s ease-in-out infinite; transform-box: fill-box; transform-origin: bottom center; }
.walker.vibing .walker-arm-l { animation: vb-arm-l 1.6s ease-in-out infinite; }
.walker.vibing .walker-arm-r { animation: vb-arm-r 1.6s ease-in-out infinite; }
.walker.vibing .walker-leg-l { animation: vb-leg-l 1.6s ease-in-out infinite; }
.walker.vibing .walker-leg-r { animation: vb-leg-r 1.6s ease-in-out infinite; }

/* ── Login ── */

#login-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    gap: 8px;
}

.login-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

#login-section label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--md-on-surface-variant);
}


#login-error {
    font-size: 0.85rem;
    color: var(--md-error);
    min-height: 1em;
}

#login-section input {
    padding: 8px 12px;
    font-size: 1rem;
    border: 1px solid var(--md-outline);
    border-radius: 4px;
    width: 240px;
    background: var(--md-surface);
    color: var(--md-on-background);
}

#login-section input:-webkit-autofill,
#login-section input:-webkit-autofill:hover,
#login-section input:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0px 1000px var(--md-surface) inset;
    -webkit-text-fill-color: var(--md-on-background);
    border-color: var(--md-outline);
}

.btn-theme-toggle {
    padding: 4px 10px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    background: none;
    color: var(--md-on-surface-variant);
    transition: background 0.15s, color 0.15s;
}

.btn-theme-toggle:hover {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

#theme_toggle_login {
    position: absolute;
    top: 12px;
    left: 12px;
}

#theme_toggle_player {
    margin-left: auto;
}

/* ── 3-column layout ── */

#player-section {
    display: grid;
    grid-template-columns: var(--left-panel-width, 380px) 4px 1fr 4px var(--right-panel-width, 260px);
    height: 100vh;
    overflow: hidden;
}

.resize-handle {
    cursor: col-resize;
    background: var(--md-outline);
    transition: background 0.15s;
    user-select: none;
}

.resize-handle:hover,
.resize-handle.dragging {
    background: var(--md-primary);
}

/* ── Dialogs ── */

dialog {
    border: none;
    border-radius: 10px;
    padding: 24px;
    min-width: 340px;
    background: var(--md-surface);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    color: var(--md-on-background);
}

#add-dialog {
    min-width: 640px;
}

#preview-player-wrapper {
    display: flex;
    justify-content: center;
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.5);
}

.dialog-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

dialog input[type="text"] {
    display: block;
    width: 100%;
    padding: 8px 12px;
    font-size: 1rem;
    border: 1px solid var(--md-outline);
    border-radius: 6px;
    background: var(--md-background);
    color: var(--md-on-background);
    margin-bottom: 4px;
}

dialog input[type="text"]:focus {
    outline: none;
    border-color: var(--md-primary);
}

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

.dialog-row input[type="text"] {
    flex: 1;
    margin-bottom: 0;
}

.dialog-row button {
    padding: 8px 14px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--md-primary);
    color: var(--md-on-primary);
    transition: filter 0.15s;
    white-space: nowrap;
}

.dialog-row button:hover {
    filter: brightness(1.1);
}

#preview-player-wrapper {
    margin-top: 12px;
}

#add-dialog-error {
    font-size: 0.8rem;
    color: var(--md-error);
    min-height: 1em;
    margin-top: 8px;
}

.dialog-checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--md-on-surface-variant);
    cursor: pointer;
    margin-top: 10px;
    user-select: none;
}

.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

.dialog-actions button {
    padding: 8px 18px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, filter 0.15s;
}

.dialog-actions button:first-child {
    background: none;
    color: var(--md-on-surface-variant);
}

.dialog-actions button:first-child:hover {
    background: var(--md-outline);
    color: var(--md-on-background);
}

.dialog-actions button:last-child {
    background: var(--md-primary);
    color: var(--md-on-primary);
}

.dialog-actions button:last-child:hover {
    filter: brightness(1.1);
}

.dialog-actions button:last-child:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    filter: none;
}

/* ── Left panel ── */

#left-panel {
    display: flex;
    flex-direction: column;
    background: var(--md-surface);
    border-right: 1px solid var(--md-outline);
    overflow: hidden;
    transition: box-shadow 0.15s;
}

#left-panel.url-drop-target {
    box-shadow: inset 0 0 0 2px var(--md-primary);
}

#left-panel-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 10px;
    border-bottom: 1px solid var(--md-outline);
}

#playlist-header {
    display: flex;
    align-items: center;
    padding: 8px 10px 8px 12px;
    border-bottom: 1px solid var(--md-outline);
}

#playlist-header-actions {
    margin-left: auto;
}

#playlist-header-actions {
    display: flex;
    align-items: center;
    gap: 2px;
}

#playlist-header span {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--md-on-surface-variant);
}

@keyframes kdj-spin {
    to { transform: rotate(360deg); }
}

#playlist-loading-indicator:not([hidden]) {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid var(--md-outline);
    border-top-color: var(--md-primary);
    border-radius: 50%;
    animation: kdj-spin 0.7s linear infinite;
    flex-shrink: 0;
    margin-left: 6px;
}



#playlist {
    flex: 1;
    overflow-y: auto;
    list-style: none;
    margin: 0;
    padding: 8px;
}

#playlist > li + li {
    border-top: 1px solid var(--md-outline);
    padding-top: 4px;
}

#playlist li {
    margin-bottom: 4px;
}

#playlist details[data-name] > summary::-webkit-details-marker {
    display: none;
}

#playlist details[data-name] > summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 4px 6px 8px;
    cursor: pointer;
    user-select: none;
    font-size: 1rem;
}

#playlist details[data-name].empty > summary {
    cursor: default;
}

#playlist details[data-name].empty > summary::before {
    visibility: hidden;
}

#playlist details[data-name] > summary::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid var(--md-on-surface-variant);
    border-bottom: 1.5px solid var(--md-on-surface-variant);
    transform: rotate(-45deg);
    flex-shrink: 0;
    margin-right: 6px;
    transition: transform 0.2s;
}

#playlist details[data-name][open] > summary::before {
    transform: rotate(45deg);
}

.playlist-title-group {
    display: flex;
    align-items: baseline;
    gap: 5px;
}

.playlist-count {
    font-size: 0.7rem;
    color: var(--md-on-surface-variant);
    font-weight: 400;
}

#playlist details[data-name] ul {
    list-style: none;
    padding: 4px 0 4px 12px;
    margin: 0;
}

#playlist details[data-name] ul:empty {
    padding: 0;
}

.video-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
}

.video-thumb {
    width: 64px;
    height: 36px;
    object-fit: cover;
    border-radius: 3px;
    flex-shrink: 0;
}

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

.video-title {
    display: block;
    font-size: 0.8rem;
    color: var(--md-on-background);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-url {
    display: block;
    font-size: 0.7rem;
    color: var(--md-on-surface-variant);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-url:hover {
    text-decoration: underline;
    color: var(--md-on-primary-container);
}

.drag-handle {
    cursor: grab;
    color: var(--md-on-surface-variant);
    font-size: 1rem;
    padding: 0 2px;
    opacity: 0.35;
    transition: opacity 0.15s;
    user-select: none;
    flex-shrink: 0;
}

.drag-handle:hover {
    opacity: 1;
}

.video-item.dragging {
    opacity: 0.4;
}

.video-item.drag-over-top {
    box-shadow: 0 -2px 0 var(--md-primary);
}

.video-item.drag-over-bottom {
    box-shadow: 0 2px 0 var(--md-primary);
}

.playlist-icon-btns {
    display: flex;
    gap: 2px;
    margin-left: auto;
}

.playlist-icon-btn {
    padding: 2px 7px;
    border: none;
    border-radius: 3px;
    background: none;
    font-size: 1.1rem;
    line-height: 1.4;
    cursor: pointer;
    color: var(--md-on-surface-variant);
    opacity: 0.35;
    transition: background 0.15s, color 0.15s, opacity 0.15s;
}

.playlist-icon-btn[data-action="start-from"] {
    font-size: 0.8rem;
}

.playlist-icon-btn:hover {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
    opacity: 1;
}

/* ── Center panel ── */

#center-panel {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 12px;
    padding: 32px 48px;
    background: var(--md-background);
    overflow: hidden;
}

#player-container {
    flex: 1;
    min-height: 0;
    position: relative;
}

#player-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#player-controls {
    display: flex;
    gap: 8px;
}

#queue_toggle_button,
#skip_button,
#add_to_playlists_button,
#sync_pause_button {
    flex: 1;
    padding: 10px 0;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.15s;
}

#add_to_playlists_button {
    background: var(--md-primary);
    color: var(--md-on-primary);
}

#add_to_playlists_button:hover:not(:disabled) {
    filter: brightness(0.9);
}

#add_to_playlists_button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#queue_toggle_button {
    background: var(--md-secondary);
    color: var(--md-on-secondary);
}

#queue_toggle_button:hover {
    filter: brightness(0.9);
}

#queue_toggle_button.in-queue {
    background: var(--md-error);
    color: var(--md-on-error);
}

#queue_toggle_button.in-queue:hover {
    filter: brightness(0.9);
}

#skip_button {
    background: var(--md-tertiary);
    color: var(--md-on-tertiary);
}

#skip_button:hover {
    filter: brightness(0.9);
}

#sync_pause_button {
    background: var(--md-neutral);
    color: var(--md-on-neutral);
}

#sync_pause_button:hover {
    filter: brightness(0.9);
}

#sync_pause_button.sync-pause-active {
    background: var(--md-primary);
    color: var(--md-on-primary);
}

.btn-muted {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--md-on-neutral);
    background: var(--md-neutral);
    transition: filter 0.15s;
}

.btn-muted:hover {
    filter: brightness(0.9);
}

#player_error {
    font-size: 0.875rem;
    color: var(--md-error);
    min-height: 1.2em;
}

/* ── Right panel ── */

#right-panel {
    display: flex;
    flex-direction: column;
    background: var(--md-surface);
    border-left: 1px solid var(--md-outline);
    overflow: hidden;
}

#right-panel-header {
    padding: 8px 10px 8px 12px;
    border-bottom: 1px solid var(--md-outline);
    flex-shrink: 0;
}

#right-panel-header span {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--md-on-surface-variant);
}

#users-list {
    flex: 1;
    overflow-y: auto;
    list-style: none;
    margin: 0;
    padding: 8px;
}

@keyframes user-enter {
    from { opacity: 0; transform: translateX(-6px); }
    to   { opacity: 1; transform: translateX(0); }
}

#users-list li {
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 0.9rem;
}

#users-list li.user-entering {
    animation: user-enter 0.2s ease forwards;
}

#users-list li.in-queue {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

#users-list li.now-playing {
    background: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
    font-weight: 600;
}

#playlist details[data-name].active > summary > strong {
    color: var(--md-on-primary-container);
}

#playlist details[data-name].active {
    background: var(--md-primary-container);
    border-radius: 4px;
}

/* ── Add-to-playlists dialog ── */

#add-to-playlists-video-title {
    font-size: 0.85rem;
    color: var(--md-on-surface-variant);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#add-to-playlists-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-height: 280px;
    overflow-y: auto;
    margin: 4px 0;
}

.add-to-playlists-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95rem;
    user-select: none;
}

.add-to-playlists-item:hover {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

/* ── Connection status banner ── */

#connection-status {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--md-error);
    color: var(--md-on-error);
    padding: 6px 18px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 9999;
    pointer-events: none;
}