:root {
    --bg-color: #f0f4f8;
    --sidebar-bg: rgba(255, 255, 255, 0.85);
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --border-color: rgba(226, 232, 240, 0.8);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0f172a;
        --sidebar-bg: rgba(30, 41, 59, 0.85);
        --card-bg: rgba(30, 41, 59, 0.9);
        --text-primary: #f8fafc;
        --text-secondary: #94a3b8;
        --border-color: rgba(51, 65, 85, 0.8);
    }
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
    background: transparent;
}

/* 玄妙背景样式 */
.mystical-bg {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: #0b0f19;
    transition: background 0.5s ease;
}

@media (prefers-color-scheme: light) {
    .mystical-bg {
        background: #f8fafc;
    }
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: orbFloat 20s infinite alternate ease-in-out;
}

.orb-1 { width: 50vw; height: 50vw; background: rgba(59, 7, 100, 0.4); top: -10%; left: -10%; }
.orb-2 { width: 40vw; height: 40vw; background: rgba(23, 37, 84, 0.4); bottom: -10%; right: -10%; animation-delay: -5s; }
.orb-3 { width: 30vw; height: 30vw; background: rgba(6, 78, 59, 0.4); top: 40%; left: 30%; animation-delay: -10s; }

@media (prefers-color-scheme: light) {
    .orb-1 { background: rgba(147, 197, 253, 0.4); }
    .orb-2 { background: rgba(196, 181, 253, 0.4); }
    .orb-3 { background: rgba(134, 239, 172, 0.4); }
}

@keyframes orbFloat {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10vw, 5vh) scale(1.2); }
}

.sacred-geometry {
    position: absolute;
    top: 50%; left: 50%;
    width: 200vw; height: 200vw;
    transform: translate(-50%, -50%);
    background-image: repeating-radial-gradient(
        circle at center,
        transparent 0,
        transparent 40px,
        rgba(99, 102, 241, 0.05) 41px,
        rgba(99, 102, 241, 0.05) 42px
    );
    animation: rotateGeo 150s linear infinite;
    opacity: 0.8;
}

.sacred-geometry::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: repeating-conic-gradient(
        from 0deg at center,
        transparent 0deg,
        transparent 10deg,
        rgba(168, 85, 247, 0.04) 10.5deg,
        rgba(168, 85, 247, 0.04) 11deg
    );
}

@media (prefers-color-scheme: light) {
    .sacred-geometry {
        background-image: repeating-radial-gradient(
            circle at center,
            transparent 0,
            transparent 40px,
            rgba(99, 102, 241, 0.1) 41px,
            rgba(99, 102, 241, 0.1) 42px
        );
    }
    .sacred-geometry::after {
        background-image: repeating-conic-gradient(
            from 0deg at center,
            transparent 0deg,
            transparent 10deg,
            rgba(168, 85, 247, 0.08) 10.5deg,
            rgba(168, 85, 247, 0.08) 11deg
        );
    }
}

@keyframes rotateGeo {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    z-index: 10;
    box-shadow: var(--glass-shadow);
    transition: width 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
    overflow-x: hidden;
}

.sidebar.collapsed {
    width: 0;
    padding-left: 0;
    padding-right: 0;
    border-right: none;
    opacity: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-shrink: 0;
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.user-section {
    background: rgba(100, 116, 139, 0.05);
    border-radius: 8px;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #3b82f6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
}

.auth-view p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-align: center;
}

.hidden {
    display: none !important;
}

/* Buttons */
.btn {
    padding: 0.625rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn.primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn.secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn.secondary:hover {
    background: rgba(100, 116, 139, 0.1);
}

.btn.danger {
    background: transparent;
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
}

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

.btn.small {
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
}

.full-width {
    width: 100%;
}

.text-left {
    justify-content: flex-start;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
    transition: var(--transition);
}

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

.scene-delete-btn {
    color: #ffffff !important;
}

.scene-delete-btn:hover {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Sections */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.scenes-section {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    margin-bottom: 2rem;
}

.scenes-list {
    list-style: none;
    flex: 1;
    overflow-y: auto;
}

.scenes-list li {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.25rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.scenes-list li:hover {
    background: rgba(100, 116, 139, 0.1);
    color: var(--text-primary);
}

.scenes-list li.active {
    background: var(--primary-color);
    color: white;
}

.tools-section {
    flex-shrink: 0;
    margin-bottom: 2rem;
}

.tools-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    overflow-y: auto;
    scroll-behavior: smooth;
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.main-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.board {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.category {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--glass-shadow);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.category-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.bookmarks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    min-height: 50px; /* For dropping when empty */
}

.bookmark-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    cursor: grab;
    position: relative;
    overflow: hidden;
}

.bookmark-card:active {
    cursor: grabbing;
}

.bookmark-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.bookmark-card img {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.bookmark-info {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.875rem;
    font-weight: 500;
}

.edit-btn {
    opacity: 0;
    position: absolute;
    right: 2.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.delete-btn {
    opacity: 0;
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.bookmark-card:hover .delete-btn,
.bookmark-card:hover .edit-btn {
    opacity: 1;
}

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

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

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 1;
    visibility: visible;
    transition: all 0.3s ease;
}

.modal.hidden {
    display: flex !important; /* override generic .hidden */
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.modal-content {
    background: var(--card-bg);
    padding: 2.5rem 2.5rem;
    border-radius: 24px;
    width: 90%;
    max-width: 420px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    position: relative;
    transform: translateY(0) scale(1);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.modal.hidden .modal-content {
    transform: translateY(20px) scale(0.95);
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    background: transparent;
    border-radius: 50%;
    transition: all 0.2s ease;
    line-height: 1;
}

.close-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    transform: rotate(90deg);
}

.modal h2 {
    margin-top: 0;
    margin-bottom: 2rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    width: 100%;
}

#authForm, #dataForm {
    width: 100%;
}

.form-group {
    margin-bottom: 1.5rem;
    width: 100%;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: left;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    background: var(--card-bg);
}

.auth-switch {
    margin-top: 1rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.error-text {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 1rem;
    text-align: center;
}

/* Dragging styles */
.sortable-ghost {
    opacity: 0.4;
}

.sortable-drag {
    cursor: grabbing !important;
}