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

:root {
    /* Modern color palette */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --danger-light: #fee2e2;
    --success: #10b981;
    --success-hover: #059669;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-hover: #d97706;
    --warning-light: #fef3c7;

    /* Background and surface colors */
    --bg: #f9fafb;
    --bg-secondary: #f3f4f6;
    --card-bg: #ffffff;
    --card-bg-hover: #f8fafc;

    /* Text colors */
    --text: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;
    --text-light: #9ca3af;

    /* Border and shadow */
    --border: #e5e7eb;
    --border-hover: #d1d5db;
    --shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.card-elevated {
    box-shadow: var(--shadow-lg);
    border: none;
}

.card-elevated:hover {
    box-shadow: var(--shadow-xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 1px 2px 0 rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background: var(--bg);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 1px 2px 0 rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: var(--danger-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(239, 68, 68, 0.3);
}

.btn-success {
    background: var(--success);
    color: white;
    box-shadow: 0 1px 2px 0 rgba(16, 185, 129, 0.2);
}

.btn-success:hover {
    background: var(--success-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.3);
}

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

.btn-outline:hover {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}

.btn-ghost:hover {
    background: var(--bg-secondary);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-icon {
    padding: 0.5rem;
    width: 2.5rem;
    height: 2.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background: var(--card-bg);
    color: var(--text);
    font-family: inherit;
}

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

.input:hover {
    border-color: var(--border-hover);
}

.input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background: white;
}

.input-error {
    border-color: var(--danger);
}

.input-error:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.input-success {
    border-color: var(--success);
}

.input-success:focus {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

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

.logo-icon {
    font-size: 1.75rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 600;
}

.nav-icon {
    font-size: 1.125rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quota-bar {
    width: 120px;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.quota-fill {
    height: 100%;
    background: var(--primary);
    transition: width 0.3s ease;
}

.quota-fill.warning {
    background: var(--warning);
}

.quota-fill.danger {
    background: var(--danger);
}

.main {
    padding: 2rem 0;
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg) 100%);
    position: relative;
    overflow: hidden;
}

.auth-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="white" opacity="0.05"/></svg>');
    background-size: cover;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    position: relative;
    z-index: 1;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.auth-logo {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text);
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-subtitle {
    font-size: 0.9375rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

.auth-footer a:hover {
    text-decoration: underline;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.breadcrumb-item {
    color: var(--text-muted);
    cursor: pointer;
}

.breadcrumb-item:hover {
    color: var(--primary);
}

.breadcrumb-separator {
    color: var(--text-muted);
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.file-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
    cursor: pointer;
}

.file-item:hover {
    border-color: var(--primary);
    background: var(--card-bg-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.file-item.selected {
    border-color: var(--primary);
    background: var(--primary-light);
}

.file-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), #e0e7ff);
    border-radius: var(--radius-md);
    margin-right: var(--spacing-md);
    font-size: 1.5rem;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.file-item:hover .file-icon {
    transform: scale(1.05);
}

.file-icon.folder {
    color: var(--primary);
    background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
}

.file-icon.file {
    color: var(--primary);
    background: linear-gradient(135deg, #e0e7ff, #dbeafe);
}

.file-icon.image {
    color: var(--success);
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
}

.file-icon.document {
    color: var(--warning);
    background: linear-gradient(135deg, #fef3c7, #fde68a);
}

.file-icon.archive {
    color: var(--danger);
    background: linear-gradient(135deg, #fee2e2, #fecaca);
}

.file-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.file-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.9375rem;
    color: var(--text);
}

.file-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    gap: var(--spacing-md);
}

.file-size {
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

.file-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.file-action-btn {
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.2s ease;
}

.file-item:hover .file-action-btn {
    opacity: 1;
    transform: translateX(0);
}

.toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    padding: var(--spacing-md);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-right: var(--spacing-md);
    border-right: 1px solid var(--border);
}

.toolbar-group:last-child {
    border-right: none;
    padding-right: 0;
}

.toolbar-search {
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

.toolbar-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: auto;
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--primary);
    background: var(--card-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.upload-zone:hover::before, .upload-zone.dragover::before {
    opacity: 0.1;
}

.upload-zone.dragover {
    border-color: var(--primary);
    border-style: solid;
    background: var(--primary-light);
}

.upload-zone-content {
    position: relative;
    z-index: 1;
}

.upload-zone-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.upload-zone:hover .upload-zone-icon {
    transform: scale(1.1) translateY(-5px);
}

.upload-zone-text {
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.upload-zone-text strong {
    color: var(--primary);
    font-weight: 600;
}

.upload-zone-hint {
    font-size: 0.875rem;
    color: var(--text-light);
}

.upload-progress {
    margin-top: var(--spacing-md);
    width: 100%;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.upload-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-hover));
    border-radius: 3px;
    transition: width 0.3s ease;
}

.upload-progress-text {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-md);
    animation: fadeIn 0.2s ease;
    backdrop-filter: blur(4px);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
    border: 1px solid var(--border);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(to right, var(--primary-light), transparent);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    line-height: 1;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    background: var(--bg-secondary);
}

.modal-large {
    max-width: 800px;
}

.modal-full {
    max-width: 90vw;
    max-height: 90vh;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.tab {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.15s ease;
}

.tab:hover {
    color: var(--text);
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.share-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg);
    border-radius: 0.375rem;
    font-family: monospace;
    font-size: 0.875rem;
    word-break: break-all;
}


/* User Dropdown */
.user-menu-container {
    position: relative;
    display: inline-block;
}

.user-menu-trigger {
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    z-index: 1000;
    padding: 0.5rem 0;
}

.user-menu-container:hover .user-dropdown {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 0.5rem 1rem;
    text-align: left;
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
    font-size: 0.875rem;
    text-decoration: none;
}

.dropdown-item:hover {
    background: var(--bg);
    color: var(--primary);
}

/* Loading Spinner */
.spinner {
    width: 1em;
    height: 1em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-rotate 0.75s linear infinite;
}

@keyframes spinner-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Shared Button Active State */
.btn-share-active {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
}

/* Mobile Adaptations */
@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .logo {
        flex: 1;
    }

    .user-info {
        order: 2;
    }

    .nav {
        width: 100%;
        order: 3;
        overflow-x: auto;
        padding-top: 0.5rem;
    }

    .file-list {
        gap: 0.75rem;
    }

    .file-item {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .file-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.5rem;
        margin-right: 0;
        margin-bottom: 0.5rem;
        align-self: center;
    }
    
    .file-info {
        text-align: center;
    }

    .file-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .file-actions .btn {
        flex: 1 0 30%; /* Auto-grow, min 30% width */
        justify-content: center;
        padding: 0.6rem 0.5rem; /* Slightly larger touch target */
    }

    .quota-bar {
        display: none; /* Hide quota bar on mobile to save space */
    }
}

/* Desktop Button Alignment */
@media (min-width: 769px) {
    .file-actions .btn {
        min-width: 80px; /* Ensure buttons have consistent width */
    }
}

.toast-container {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 500px;
    width: 90%;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    font-size: 0.875rem;
    font-weight: 500;
    animation: slideDown 0.3s ease-out;
    word-wrap: break-word;
    text-align: center;
}

.toast-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.toast-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.toast-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.progress-bar-indeterminate {
    width: 30%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, #60a5fa 50%, var(--primary) 100%);
    animation: indeterminateProgress 1.5s ease-in-out infinite;
    border-radius: 4px;
}

@keyframes indeterminateProgress {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(350%);
    }
}

.modal-large {
    max-width: 900px;
}

.preview-body {
    padding: 0;
    max-height: 80vh;
    overflow: auto;
    display: flex;
    flex-direction: column;
}

.preview-image-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: #f1f5f9;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.preview-image {
    max-width: 100%;
    max-height: calc(80vh - 3rem);
    object-fit: contain;
    border-radius: 0.5rem;
    display: block;
}

.preview-text {
    padding: 1.5rem;
    margin: 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    background: #f8fafc;
    color: var(--text);
    overflow-x: auto;
}

.preview-loading {
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 1rem;
}

.preview-error {
    padding: 3rem;
    text-align: center;
    color: var(--danger);
    font-size: 1rem;
}

/* New modern styles */

/* Status indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-indicator-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
}

.status-indicator-success {
    background: var(--success-light);
    color: var(--success);
}

.status-indicator-success .status-indicator-dot {
    background: var(--success);
}

.status-indicator-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.status-indicator-warning .status-indicator-dot {
    background: var(--warning);
}

.status-indicator-danger {
    background: var(--danger-light);
    color: var(--danger);
}

.status-indicator-danger .status-indicator-dot {
    background: var(--danger);
}

/* Loading states */
.skeleton {
    background: linear-gradient(90deg, var(--border) 25%, var(--bg) 50%, var(--border) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-text:last-child {
    margin-bottom: 0;
}

.skeleton-circle {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
}

/* Grid layout */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

/* Stats cards */
.stats-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-light), transparent);
    border: 1px solid var(--border);
}

.stats-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stats-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Empty states */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    color: var(--border);
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.empty-state-description {
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-lg);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Badge improvements */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid transparent;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
    border-color: rgba(99, 102, 241, 0.2);
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
    border-color: rgba(16, 185, 129, 0.2);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.2);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

/* Toast improvements */
.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    font-size: 0.875rem;
    font-weight: 500;
    animation: slideDown 0.3s ease-out;
    word-wrap: break-word;
    text-align: left;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border: 1px solid transparent;
    backdrop-filter: blur(8px);
}

.toast-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.toast-success {
    background: rgba(209, 250, 229, 0.95);
    color: #065f46;
    border-color: rgba(110, 231, 183, 0.3);
}

.toast-error {
    background: rgba(254, 226, 226, 0.95);
    color: #991b1b;
    border-color: rgba(252, 165, 165, 0.3);
}

.toast-info {
    background: rgba(219, 234, 254, 0.95);
    color: #1e40af;
    border-color: rgba(147, 197, 253, 0.3);
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111827;
        --bg-secondary: #1f2937;
        --card-bg: #1f2937;
        --card-bg-hover: #374151;
        --text: #f9fafb;
        --text-secondary: #e5e7eb;
        --text-muted: #9ca3af;
        --text-light: #6b7280;
        --border: #374151;
        --border-hover: #4b5563;
        --shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
        --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    }

    .header {
        background: rgba(31, 41, 55, 0.95);
        backdrop-filter: blur(8px);
    }

    .auth-page {
        background: linear-gradient(135deg, #1e1b4b 0%, var(--bg) 100%);
    }

    .auth-card {
        background: rgba(31, 41, 55, 0.95);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .file-icon {
        background: rgba(99, 102, 241, 0.1);
    }

    .file-icon.folder {
        background: rgba(99, 102, 241, 0.15);
    }

    .file-icon.file {
        background: rgba(99, 102, 241, 0.1);
    }

    .modal-header {
        background: linear-gradient(to right, rgba(99, 102, 241, 0.1), transparent);
    }
}