:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-text: #ffffff;
    --color-text-light: #a0a0a0;
    --color-border: #2a2a2a;
    --color-hover: #ffffff;
    --color-accent: #3b82f6;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --transition: all 0.2s ease;
    --hover-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --dim-opacity: 0.3;
    --hover-scale: 2;
}

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

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    line-height: 1.6;
    padding: 1rem;
}

.moodboard {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 1rem;
    max-width: 2000px;
    margin: 0 auto;
    position: relative;
}

.moodboard.dimmed .video-container {
    filter: brightness(0.3);
}

.moodboard.dimmed .video-container:hover {
    filter: brightness(1);
}

/* Page-wide dimming overlay when video is scaled */
.moodboard.video-scaled::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 5;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.moodboard.video-scaled .video-container.scaled {
    z-index: 15;
}

.video-container {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    overflow: visible;
    cursor: grab;
    margin-bottom: 32px;
    z-index: 1;
    filter: brightness(1);
    transition: filter 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center center;
}

.video-container:active {
    cursor: grabbing;
}

.video-container.scaled {
    z-index: 10;
    transform: scale(2);
}

/* Drag and Drop Styles */
.video-container.dragging {
    opacity: 0.5;
    transform: rotate(5deg) scale(0.95);
    z-index: 1000;
}

.video-container.drag-over {
    border: 2px dashed var(--color-accent);
    background: rgba(59, 130, 246, 0.1);
}

.moodboard.dragging-active .video-container:not(.dragging) {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.drag-placeholder {
    background: rgba(59, 130, 246, 0.2);
    border: 2px dashed var(--color-accent);
    border-radius: var(--radius-md);
    aspect-ratio: 16/9;
    margin-bottom: 32px;
    opacity: 0.7;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-weight: 600;
    position: relative;
}

.drag-placeholder::before {
    content: "Drop here";
    font-size: 0.9rem;
}

.youtube-player {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    display: block;
    pointer-events: none;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.youtube-player iframe {
    pointer-events: none !important;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.youtube-player iframe.loaded {
    opacity: 1;
}

.youtube-player.loading {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.floating-controls {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-end;
}

.control-widget {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    width: 300px;
    transform: translateY(100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    border: 1px solid var(--color-border);
}

.control-widget.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
}

.add-button {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-accent);
    color: white;
    border: none;
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.add-button:hover {
    transform: scale(1.1);
    background: #2563eb;
}

/* Google Sign-In Button Styles */
.gsi-material-button {
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    -webkit-appearance: none;
    background-color: WHITE;
    background-image: none;
    border: 1px solid #dadce0;
    border-radius: var(--radius-md);
    box-sizing: border-box;
    color: #3c4043;
    cursor: pointer;
    font-family: 'Google Sans',arial,sans-serif;
    font-size: 14px;
    height: 40px;
    letter-spacing: 0.25px;
    outline: none;
    overflow: hidden;
    padding: 0 12px;
    position: relative;
    text-align: center;
    transition: background-color .218s,border-color .218s,box-shadow .218s;
    vertical-align: middle;
    white-space: nowrap;
    width: auto;
    max-width: 400px;
    min-width: min-content;
    margin: 0;
}

.gsi-material-button .gsi-material-button-icon {
    height: 20px;
    margin-right: 12px;
    min-width: 20px;
    width: 20px;
}

.gsi-material-button .gsi-material-button-contents {
    flex-grow: 1;
    font-family: 'Google Sans',arial,sans-serif;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    vertical-align: top;
}

.gsi-material-button .gsi-material-button-state {
    bottom: 0;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
}

.gsi-material-button .gsi-material-button-content-wrapper {
    align-items: center;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    height: 100%;
    position: relative;
    width: 100%;
}

.gsi-material-button:hover {
    -webkit-box-shadow: 0 1px 2px 0 rgba(60,64,67,.3), 0 1px 3px 1px rgba(60,64,67,.15);
    box-shadow: 0 1px 2px 0 rgba(60,64,67,.3), 0 1px 3px 1px rgba(60,64,67,.15);
}

.gsi-material-button:active {
    -webkit-box-shadow: 0 1px 2px 0 rgba(60,64,67,.3), 0 2px 6px 2px rgba(60,64,67,.15);
    box-shadow: 0 1px 2px 0 rgba(60,64,67,.3), 0 2px 6px 2px rgba(60,64,67,.15);
    background-color: #eee;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.timestamp-inputs {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

input[type="text"], input[type="number"] {
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    transition: var(--transition);
    width: 100%;
    background: var(--color-bg);
    color: var(--color-text);
}

input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

input::placeholder {
    color: var(--color-text-light);
}

.remove-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    background: rgba(20, 20, 20, 0.9);
    border: none;
    border-radius: 50%;
    color: var(--color-text);
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
    z-index: 10;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.remove-btn:hover {
    background: rgba(30, 30, 30, 0.95);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.video-container:hover .remove-btn {
    opacity: 1;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    color: var(--color-text-light);
    grid-column: 1 / -1;
    border: 1px solid var(--color-border);
}

.empty-state button {
    background: var(--color-accent);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.empty-state button:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.empty-state h3 {
    color: var(--color-text);
    margin-bottom: 1rem;
}

.frame-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 3;
    backdrop-filter: blur(4px);
}

.video-container:hover .frame-indicator {
    transform: translate(-50%, -50%) scale(0.5);
}

.frame-indicator.visible {
    opacity: 1;
}

.info-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.info-section h4 {
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.info-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-section li {
    margin-bottom: 0.25rem;
}

.info-section .contact {
    margin-top: 0.75rem;
    font-style: italic;
}

@media (max-width: 768px) {
    .moodboard {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 0.75rem;
    }
    
    .floating-controls {
        bottom: 1rem;
        right: 1rem;
    }

    .control-widget {
        width: calc(100vw - 2rem);
        right: 0;
    }

    /* Improve touch experience */
    .video-container {
        margin-bottom: 20px;
    }

    .drag-placeholder {
        margin-bottom: 20px;
    }
}

/* Touch device improvements */
@media (hover: none) and (pointer: coarse) {
    .video-container {
        cursor: grab;
    }
    
    .video-container:active {
        cursor: grabbing;
    }
}