:root {
    --bg-color: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --input-bg: rgba(0, 0, 0, 0.2);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 50px;
}

.container {
    width: 100%;
    max-width: 800px;
    padding: 20px;
}

/* Login */
#login-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    margin-top: 10vh;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(to right, var(--accent-color), #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

input,
select {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

input:focus,
select:focus {
    border-color: var(--accent-color);
}

button {
    cursor: pointer;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    background: var(--accent-color);
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.2s, transform 0.1s;
}

button:hover {
    background: var(--accent-hover);
}

button:active {
    transform: scale(0.98);
}

/* Dashboard */
#dashboard-screen {
    display: none;
    width: 100%;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.header-title-area {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-actions {
    display: flex;
    gap: 10px;
}

.header button {
    background: transparent;
    border: 1px solid var(--card-border);
    padding: 8px 16px;
    font-size: 0.9rem;
}

.header button:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Switcher */
.switcher-btn {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.switcher-btn.active {
    background: var(--card-bg);
    color: var(--text-primary);
    border-color: var(--card-border);
}

/* Lists */
.list-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.list-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 12px 16px;
    position: relative;
    transition: background 0.2s, transform 0.2s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.draggable-item {
    cursor: grab;
}

.draggable-item:active {
    cursor: grabbing;
}

.draggable-item.dragging {
    opacity: 0.5;
    background: rgba(255, 255, 255, 0.1);
    border: 1px dashed var(--accent-color);
}

.drag-handle {
    cursor: grab;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    padding-right: 15px;
    opacity: 0.3;
}

.drag-handle:hover {
    opacity: 0.8;
}

.list-item:hover {
    background: rgba(255, 255, 255, 0.08);
}

.list-content {
    display: flex;
    flex-direction: column;
    width: 100%;
    padding-right: 80px;
}

.list-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.list-value {
    font-size: 1rem;
    font-weight: 500;
    word-break: break-all;
    user-select: all;
}

.list-category {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.5;
    margin-left: 10px;
}

.list-actions {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 20;
}

.list-item:hover .list-actions {
    opacity: 1;
}

/* Person Card */
.person-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.person-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.2);
}

.person-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.person-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), #818cf8);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.person-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-btn {
    background: transparent;
    color: var(--text-secondary);
    padding: 6px;
    font-size: 1.1rem;
    border-radius: 4px;
}

.icon-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

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

.copy-overlay {
    position: absolute;
    inset: 0;
    cursor: pointer;
    z-index: 10;
}

/* Drive Styles */
#drive-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.folder-section {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 15px;
}

.folder-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.folder-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--accent-color);
    font-size: 1.1rem;
}

.folder-actions {
    gap: 5px;
}

/* Improved Grid */
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
}

.file-card {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    background: #000;
    border: 2px solid var(--card-border);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.file-card:hover {
    transform: translateY(-2px);
    z-index: 5;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-color);
}

.file-card.selected {
    border-color: var(--accent-color);
    background: rgba(56, 189, 248, 0.2);
}

.file-card.selected .check-icon {
    opacity: 1;
    transform: scale(1);
}

.file-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.file-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    opacity: 0;
    transition: opacity 0.2s;
}

.file-card:hover .file-overlay {
    opacity: 1;
}

.check-icon {
    color: var(--accent-color);
    font-size: 2rem;
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.2s;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.file-btn {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    border: none;
    cursor: pointer;
    backdrop-filter: blur(4px);
}

.file-btn:hover {
    background: var(--accent-color);
}

/* Bulk Toolbar */
.bulk-toolbar {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--surface-light);
    padding: 12px 24px;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.bulk-toolbar.visible {
    transform: translateX(-50%) translateY(0);
}

.bulk-toolbar .selected-count {
    font-weight: 600;
    color: var(--text-primary);
}

.bulk-toolbar .bulk-actions {
    display: flex;
    gap: 10px;
}

.bulk-toolbar .close-bulk {
    cursor: pointer;
    color: var(--text-secondary);
}

/* Upload Progress */
#upload-progress-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 300px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    z-index: 1001;
    display: none;
    /* Hidden by default */
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.progress-bar-bg {
    width: 100%;
    height: 6px;
    background: var(--bg-color);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-color);
    width: 0%;
    transition: width 0.2s;
}

/* Selection Box */
#selection-box {
    position: absolute;
    border: 1px solid var(--primary-color);
    background: rgba(59, 130, 246, 0.2);
    display: none;
    pointer-events: none;
    /* Let clicks pass through */
    z-index: 9999;
}

/* Preview Modal */
.preview-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    backdrop-filter: blur(5px);
}

.preview-modal.open {
    opacity: 1;
    pointer-events: auto;
}

.preview-content {
    max-width: 90%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.preview-image {
    max-width: 100%;
    max-height: 80vh;
    border-radius: 8px;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.preview-actions {
    display: flex;
    gap: 15px;
}

.preview-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    opacity: 0.7;
}

.preview-close:hover {
    opacity: 1;
}

/* Common */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--success-color);
    color: #fff;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: #1e293b;
    border: 1px solid var(--card-border);
    padding: 30px;
    border-radius: 16px;
    width: 90%;
    max-width: 400px;
    transform: scale(0.95);
    transition: transform 0.2s;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.modal-overlay.open .modal {
    transform: scale(1);
}

.modal h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 25px;
}

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

.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 25px;
    background: var(--accent-color);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: none;
    font-size: 24px;
    cursor: pointer;
    transition: transform 0.2s;
    z-index: 90;
}

.fab:hover {
    transform: scale(1.1);
}