/* Theme System - Light and Dark Modes */

:root {
    /* Light theme (default) */
    --bg-primary: #eeeef3;
    --bg-secondary: #e2e2e9;
    --bg-tertiary: #d6d6df;
    --text-primary: #1a1a2e;
    --text-secondary: #52526a;
    --border-color: #b8b8c8;
    --button-bg: #6C63FF;
    --button-hover: #1565c0;
    --button-danger: #dc2626;
    --button-danger-hover: #b91c1c;
    --shadow-color: rgba(0, 0, 0, 0.12);
    --panel-surface: rgba(255, 255, 255, 0.96);
    --panel-blur: blur(12px);
    --panel-border: rgba(0, 0, 0, 0.14);
    --radius-full: 999px;
}

[data-theme="dark"] {
    --bg-primary: #0D0D14;
    --bg-secondary: #252535;
    --bg-tertiary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #9e9e9e;
    --border-color: #424242;
    --button-bg: #6C63FF;
    --button-hover: #1565c0;
    --button-danger: #dc2626;
    --button-danger-hover: #b91c1c;
    --shadow-color: rgba(0, 0, 0, 0.55);
    --panel-surface: rgba(36, 36, 50, 0.92);
    --panel-blur: blur(16px);
    --panel-border: rgba(255, 255, 255, 0.08);
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.video-player-container {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease;
}

/* Control Panel — glassmorphism floating card */
.control-panel {
    flex-shrink: 0;
    background-color: var(--panel-surface);
    backdrop-filter: var(--panel-blur);
    -webkit-backdrop-filter: var(--panel-blur);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    margin: 0.5rem 0.75rem;
    padding: 0.75rem 1.5rem;
    box-shadow: 0 8px 32px var(--shadow-color), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transition: background-color 0.3s ease;
    position: relative;
    z-index: 100;
}

/* Top bar: always visible — logo · count · theme · collapse */
.control-panel-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.app-logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.video-count-badge {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-family: monospace;
    font-weight: 500;
    white-space: nowrap;
}

/* Collapsed: single compact row */
.collapsed-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.collapsed-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.mini-btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    transition: background-color 0.2s, transform 0.1s;
}

.mini-btn:hover:not(:disabled) {
    background-color: var(--button-bg);
    color: white;
    transform: translateY(-1px);
}

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

/* Add Video Input */
.add-video-input {
    margin-bottom: 0.5rem;
}

.input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.url-input {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s, background-color 0.3s, color 0.3s;
}

.url-input:focus {
    outline: none;
    border-color: var(--button-bg);
}

.url-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.url-input::placeholder {
    color: var(--text-secondary);
}

.error-message {
    color: var(--button-danger);
    font-size: 0.875rem;
    display: block;
    margin-top: 0.25rem;
}

.success-message {
    color: #4caf50;
    font-size: 0.875rem;
    display: block;
    margin-top: 0.25rem;
}

.video-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: block;
    margin-top: 0.25rem;
}

.textarea-input {
    resize: vertical;
    min-height: 2.5rem;
    font-family: inherit;
}

/* Control Actions */
.control-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

/* Vertical separator between control groups */
.ctrl-sep {
    width: 1px;
    height: 22px;
    background: var(--border-color);
    flex-shrink: 0;
    align-self: center;
    opacity: 0.6;
}

/* Clear All + platform ⓘ icon pushed to far right */
.control-actions-end {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

/* Platform info ⓘ tooltip icon */
.platform-info-icon {
    font-size: 1rem;
    color: var(--text-secondary);
    cursor: help;
    user-select: none;
    flex-shrink: 0;
    transition: color 0.2s;
}

.platform-info-icon:hover {
    color: #f7b731;
}

/* Bulk Controls */
.bulk-controls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.bulk-btn {
    padding: 0.5rem 1.1rem;
    font-size: 0.875rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s, box-shadow 0.2s;
    background-color: var(--button-bg);
    color: white;
    font-weight: 500;
}

.bulk-btn:hover:not(:disabled) {
    background-color: var(--button-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.35);
}

.bulk-btn:active:not(:disabled) {
    transform: translateY(0);
}

.bulk-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Secondary filled-dark style — Pause/Mute/Unmute/Sync/Layout */
.bulk-btn.secondary {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    box-shadow: none;
}

.bulk-btn.secondary:hover:not(:disabled) {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: none;
    transform: none;
}

.bulk-btn.danger-btn {
    background-color: var(--button-danger);
}

.bulk-btn.danger-btn:hover:not(:disabled) {
    background-color: var(--button-danger-hover);
}

.add-btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background-color: var(--button-bg);
    color: white;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s, box-shadow 0.2s;
    white-space: nowrap;
}

/* Lock button (same family as sticky-board toggle) */
.lock-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.lock-btn:hover {
    border-color: var(--button-bg);
}

.lock-btn.active {
    background-color: #ff9800;
    color: white;
    border-color: #ff9800;
}

/* Gap slider */
.gap-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.gap-control input[type="range"] {
    width: 80px;
    accent-color: var(--button-bg);
}

/* Volume control */
.volume-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.volume-control input[type="range"] {
    width: 80px;
    accent-color: var(--button-bg);
}

/* Share button */
.share-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

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

.share-btn.copied {
    background-color: #4caf50;
    color: white;
    border-color: #4caf50;
}

.add-btn:hover:not(:disabled) {
    background-color: var(--button-hover);
    transform: translateY(-1px);
}

.add-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Layout Toggle */
.layout-toggle {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* Active layout button — override secondary ghost with filled style */
.bulk-btn.secondary.layout-active {
    background-color: var(--button-bg);
    color: white;
    border-color: var(--button-bg);
}

/* Theme Toggle — icon-only compact */
.theme-toggle {
    padding: 0.4rem 0.6rem;
    font-size: 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    background-color: transparent;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
}

.theme-toggle:hover {
    border-color: var(--button-bg);
    background-color: var(--bg-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .control-panel {
        padding: 1rem;
    }

    .app-logo {
        font-size: 1.1rem;
    }

    .input-group {
        flex-direction: column;
    }

    .control-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .bulk-controls {
        width: 100%;
    }

    .bulk-btn {
        flex: 1;
        min-width: 0;
    }
}

/* Free Layout Toggle */
.free-layout-toggle {
    display: flex;
    align-items: center;
}

.free-layout-toggle label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
}

.free-layout-toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Collapsed Control Panel */
.control-panel.collapsed {
    padding: 0.5rem 2rem;
}

.collapse-toggle {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.collapse-toggle:hover {
    border-color: var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.collapse-toggle span {
    font-size: 0.75rem;
}

/* Sticky Board Toggle */
.sticky-board-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sticky-board-toggle .toggle-button {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sticky-board-toggle .toggle-button:hover {
    border-color: var(--button-bg);
}

.sticky-board-toggle .toggle-button.active {
    background-color: rgba(247, 183, 49, 0.12);
    color: #f7b731;
    border-color: rgba(247, 183, 49, 0.55);
}

.sticky-board-toggle .toggle-icon {
    font-size: 1rem;
}