/* Light CSS - Photo Blog Engine */

/* ===========================
   CSS Variables - Base
   =========================== */
:root {
    /* Brand Colors */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;

    /* Layout */
    --sidebar-width: 240px;
    --header-height: 64px;
    --content-max-width: 1400px;

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

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* Borders */
    --border-radius-sm: 0.25rem;
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-theme: 200ms ease;

    /* Component specific */
    --btn-text-contrast: #ffffff;
}

/* ===========================
   Light Theme (Default)
   =========================== */
:root,
[data-theme="light"] {
    /* Semantic Colors */
    --light-bg: #f1f5f9;
    --light-sidebar-bg: #0f172a;
    --light-sidebar-text: #94a3b8;
    --light-sidebar-text-hover: #ffffff;
    --light-sidebar-active-bg: #1e293b;
    --light-sidebar-border: #334155;
    --light-header-bg: #ffffff;
    --light-header-border: #e2e8f0;
    --light-content-bg: #ffffff;
    --light-text-primary: #0f172a;
    --light-text-secondary: #475569;
    --light-text-muted: #94a3b8;
    --light-border: #e2e8f0;
    --light-border-focus: #2563eb;
    --light-input-bg: #ffffff;
    --light-hover-bg: #f1f5f9;
    --light-card-bg: #ffffff;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Grays for compatibility */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    color-scheme: light;
}

/* ===========================
   Dark Theme
   =========================== */
[data-theme="dark"] {
    /* Semantic Colors */
    --light-bg: #0f172a;
    --light-sidebar-bg: #1e293b;
    --light-sidebar-text: #94a3b8;
    --light-sidebar-text-hover: #ffffff;
    --light-sidebar-active-bg: #334155;
    --light-sidebar-border: #475569;
    --light-header-bg: #1e293b;
    --light-header-border: #334155;
    --light-content-bg: #1e293b;
    --light-text-primary: #f1f5f9;
    --light-text-secondary: #cbd5e1;
    --light-text-muted: #64748b;
    --light-border: #334155;
    --light-border-focus: #3b82f6;
    --light-input-bg: #1e293b;
    --light-hover-bg: #334155;
    --light-card-bg: #1e293b;

    /* Brand adjustments */
    --color-primary: #3b82f6;
    --color-primary-hover: #60a5fa;
    --color-primary-light: rgba(59, 130, 246, 0.8);
    --color-success-light: rgba(16, 185, 129, 0.8);
    --color-warning-light: rgba(245, 158, 11, 0.8);
    --color-danger-light: rgba(239, 68, 68, 0.8);

    --color-success: rgba(255,255,255,0.8);
    --btn-text-contrast: #ffffff;
    --color-warning: var(--btn-text-contrast);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);

    /* Grays inverted for dark theme */
    --color-gray-50: #0f172a;
    --color-gray-100: #1e293b;
    --color-gray-200: #334155;
    --color-gray-300: #475569;
    --color-gray-400: #64748b;
    --color-gray-500: #94a3b8;
    --color-gray-600: #cbd5e1;
    --color-gray-700: #e2e8f0;
    --color-gray-800: #f1f5f9;
    --color-gray-900: #f8fafc;

    color-scheme: dark;
}

/* ===========================
   Reset & Base
   =========================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--light-text-primary);
    background-color: var(--light-bg);
    transition: background-color var(--transition-theme), color var(--transition-theme);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    color: var(--color-primary-hover);
}

/* ===========================
   Light Layout
   =========================== */
.light-layout {
    min-height: 100vh;
}

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

/* Sidebar */
.light-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--light-sidebar-bg);
    color: white;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: background-color var(--transition-theme);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--light-sidebar-border);
}

.sidebar-header .logo {
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 700;
    display: block;
}

.sidebar-nav {
    flex: 1;
    list-style: none;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--light-sidebar-text);
    transition: all var(--transition-fast);
}

.nav-item a:hover,
.nav-item.active a {
    color: var(--light-sidebar-text-hover);
    background-color: var(--light-sidebar-active-bg);
}

.nav-item.active a {
    border-left: 3px solid var(--color-primary);
    padding-left: calc(var(--spacing-lg) - 3px);
}

.nav-item svg {
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--light-sidebar-border);
}

.user-info {
    margin-bottom: var(--spacing-sm);
}

.user-name {
    font-size: var(--font-size-sm);
    color: var(--light-sidebar-text);
}

.logout-btn {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--light-sidebar-text);
    font-size: var(--font-size-sm);
    border: 1px solid var(--light-sidebar-border);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    color: var(--light-sidebar-text-hover);
    border-color: var(--light-sidebar-text);
}

/* Main Content */
.light-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.light-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background-color: var(--light-header-bg);
    border-bottom: 1px solid var(--light-header-border);
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 50;
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.light-header h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--light-text-primary);
    transition: color var(--transition-theme);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.light-content {
    flex: 1;
    padding: var(--spacing-xl);
    max-width: var(--content-max-width);
}

/* ===========================
   Login Page
   =========================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-bg);
}

.login-container {
    width: 100%;
    max-width: 360px;
    padding: var(--spacing-xl);
}

.login-card {
    background: var(--light-card-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--light-border);
}

.login-card .form-input {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
}

.login-card .btn-lg {
    padding: var(--spacing-md);
}

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

.login-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--light-text-primary);
}

.login-error {
    background-color: var(--color-danger-light);
    color: var(--color-danger);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* ===========================
   Forms
   =========================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--light-text-secondary);
}

.form-label .required {
    color: var(--color-danger);
}

.form-input,
.form-textarea,
.form-select,
input[type="password"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    border: 1px solid var(--light-border);
    border-radius: var(--border-radius);
    background-color: var(--light-input-bg);
    color: var(--light-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-theme);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--light-border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-select option {
    background-color: var(--light-input-bg);
    color: var(--light-text-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--light-text-muted);
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-danger);
}

.has-error .form-input,
.has-error .form-textarea,
.has-error .form-select {
    border-color: var(--color-danger);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-checkbox-input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    color: var(--btn-text-contrast);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--light-border);
    color: var(--light-text-primary);
}

.btn-success {
    background-color: var(--color-success);
    color: var(--btn-text-contrast);
}

.btn-success:hover:not(:disabled) {
    background-color: #059669;
    color: white;
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
    color: white;
}

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

.btn-outline:hover:not(:disabled) {
    background-color: var(--light-hover-bg);
    border-color: var(--light-border);
}

.btn-ghost {
    background-color: transparent;
    color: var(--light-text-secondary);
    padding: var(--spacing-xs);
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--light-hover-bg);
    color: var(--light-text-primary);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ===========================
   Cards
   =========================== */
.card {
    background: var(--light-card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: background-color var(--transition-theme);
}

.card-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--light-border);
    background-color: var(--light-hover-bg);
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.card-header h2,
.card-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--light-text-primary);
}

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

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--light-border);
    background-color: var(--light-hover-bg);
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

/* ===========================
   Dashboard
   =========================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--light-card-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: background-color var(--transition-theme);
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
    color: var(--light-text-muted);
    margin-bottom: var(--spacing-xs);
}

.stat-card .stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--light-text-primary);
}

.stat-card .stat-suffix {
    font-size: var(--font-size-lg);
    color: var(--light-text-muted);
    font-weight: normal;
}

.stat-card.stat-primary .stat-value {
    color: var(--color-primary);
}

.stat-card.stat-success .stat-value {
    color: var(--color-success);
}

.stat-card.stat-warning .stat-value {
    color: var(--color-warning);
}

/* Storage bar */
.storage-bar {
    background-color: var(--light-border);
    border-radius: var(--border-radius);
    height: 8px;
    margin-top: var(--spacing-sm);
    overflow: hidden;
}

.storage-bar-fill {
    background-color: var(--color-primary);
    height: 100%;
    border-radius: var(--border-radius);
    transition: width var(--transition-normal);
}

.storage-bar-fill.warning {
    background-color: var(--color-warning);
}

.storage-bar-fill.danger {
    background-color: var(--color-danger);
}

/* ===========================
   Tables
   =========================== */
.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--light-border);
}

.table th {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--light-text-secondary);
    background-color: var(--light-hover-bg);
}

.table tbody tr:hover {
    background-color: var(--light-hover-bg);
}

.table .actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* ===========================
   Status Badges
   =========================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: 9999px;
    text-transform: capitalize;
}

.badge-draft {
    background-color: var(--light-border);
    color: var(--light-text-secondary);
}

.badge-published {
    background-color: var(--color-success-light);
    color: var(--color-success);
}

.badge-hidden {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
}

/* ===========================
   Pagination
   =========================== */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.pagination-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
}

.pagination-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--light-text-secondary);
    background-color: var(--light-card-bg);
    border: 1px solid var(--light-border);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.pagination-link:hover {
    background-color: var(--light-hover-bg);
    color: var(--light-text-primary);
}

.pagination-item.active .pagination-link {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.pagination-item.disabled .pagination-link {
    color: var(--light-text-muted);
    cursor: not-allowed;
}

/* ===========================
   Media Grid
   =========================== */
.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.media-item {
    position: relative;
    background: var(--light-card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast), background-color var(--transition-theme);
}

.media-item:hover {
    box-shadow: var(--shadow-md);
}

.media-item-preview {
    aspect-ratio: 4/3;
    background-color: var(--light-hover-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.media-item-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-item-preview .file-icon {
    font-size: 48px;
    color: var(--light-text-muted);
}

.media-item-info {
    padding: var(--spacing-sm);
}

.media-item-name {
    font-size: var(--font-size-sm);
    color: var(--light-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.media-item-meta {
    font-size: var(--font-size-xs);
    color: var(--light-text-muted);
}

.media-item-actions {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

/* ===========================
   Tags
   =========================== */
.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    background-color: var(--light-hover-bg);
    color: var(--light-text-secondary);
    border-radius: var(--border-radius-sm);
}

.tag-important {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.tag-count {
    font-size: var(--font-size-xs);
    color: var(--light-text-muted);
    background-color: var(--light-border);
    padding: 2px 6px;
    border-radius: 9999px;
}

.slug-link {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--light-text-muted);
    transition: color var(--transition-fast);
}

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

.sort-link {
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.sort-link.active {
    color: var(--color-primary);
    font-weight: 700;
}

.tags-input {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    border: 1px solid var(--light-border);
    border-radius: var(--border-radius);
    background: var(--light-input-bg);
    min-height: 42px;
}

.tags-input:focus-within {
    border-color: var(--light-border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.tags-input .tag {
    background-color: var(--color-primary-light);
    color: var(--btn-text-contrast);
}

.tags-input .tag-remove {
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
}

.tags-input input {
    flex: 1;
    min-width: 100px;
    border: none;
    outline: none;
    padding: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

/* ===========================
   Post Editor
   =========================== */
.editor-container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-lg);
}

.editor-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.editor-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.editor-content {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    min-height: 400px;
}

.editor-content.dragover {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
    background-color: var(--color-gray-50);
}

.card-body.dragover {
    background-color: var(--color-primary-light);
    border: 2px dashed var(--color-primary);
    border-radius: var(--border-radius);
}

.preview-panel {
    border: 1px solid var(--light-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    background: var(--light-card-bg);
    min-height: 300px;
    transition: background-color var(--transition-theme), border-color var(--transition-theme);
}

.preview-panel img {
    max-width: 100%;
    height: auto;
}

/* ===========================
   Filters
   =========================== */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--light-card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-theme);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.filter-label {
    font-size: var(--font-size-sm);
    color: var(--light-text-secondary);
}

.filter-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    border: 1px solid var(--light-border);
    border-radius: var(--border-radius-sm);
    background: var(--light-input-bg);
    color: var(--light-text-primary);
}

.filter-select option {
    background-color: var(--light-input-bg);
    color: var(--light-text-primary);
}

/* ===========================
   Modal
   =========================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--light-card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-20px);
    transition: transform var(--transition-normal), background-color var(--transition-theme);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--light-border);
}

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--light-text-muted);
    cursor: pointer;
    line-height: 1;
}

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

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

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

/* ===========================
   Upload Area
   =========================== */
.upload-area {
    border: 2px dashed var(--light-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    background-color: var(--light-hover-bg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.upload-area-icon {
    font-size: 48px;
    color: var(--light-text-muted);
    margin-bottom: var(--spacing-md);
}

.upload-area-text {
    color: var(--light-text-secondary);
}

.upload-area-text strong {
    color: var(--color-primary);
}

/* ===========================
   Empty State
   =========================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) * 2;
    color: var(--light-text-muted);
}

.empty-state-icon {
    font-size: 64px;
    color: var(--light-border);
    margin-bottom: var(--spacing-md);
}

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

/* ===========================
   Flash Messages
   =========================== */
.flash-messages-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
    max-width: 400px;
}

.flash-messages {
    padding: 0 var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.flash-message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    background-color: var(--color-success-light);
    color: var(--color-success);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toast-in 0.3s ease-out;
    transition: opacity 0.3s ease, transform 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    font-weight: 500;
}

/* Light theme overrides for better contrast with 0.8 opacity */
:root:not([data-theme="dark"]),
[data-theme="light"] {
    --color-success-light: rgba(209, 250, 229, 0.8);
    --color-danger-light: rgba(254, 226, 226, 0.8);
    --color-warning-light: rgba(254, 243, 199, 0.8);
    --color-primary-light: rgba(219, 234, 254, 0.8);
}

.flash-error {
    background-color: var(--color-danger-light);
    color: var(--color-danger);
}

[data-theme="dark"] .flash-message {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.1);
}

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

.flash-info {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

@keyframes toast-in {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===========================
   Utilities
   =========================== */
.text-muted {
    color: var(--light-text-muted);
}

.text-xs {
    font-size: var(--font-size-xs);
}

.text-small {
    font-size: var(--font-size-sm);
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.flex {
    display: flex;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }

/* ===========================
   Theme Toggle
   =========================== */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--light-border);
    border-radius: var(--border-radius);
    color: var(--light-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--light-hover-bg);
    color: var(--light-text-primary);
    border-color: var(--light-text-muted);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    display: none;
}

/* Show sun icon in dark mode (to switch to light) */
[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

/* Show moon icon in light mode (to switch to dark) */
:root:not([data-theme="dark"]) .theme-toggle .icon-moon,
[data-theme="light"] .theme-toggle .icon-moon {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
    display: none;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
    .editor-container {
        grid-template-columns: 1fr;
    }

    .editor-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }

    .light-sidebar {
        transform: translateX(-100%);
        width: 240px;
        transition: transform var(--transition-normal);
    }

    .light-sidebar.open {
        transform: translateX(0);
    }

    .light-main {
        margin-left: 0;
    }

    .light-content {
        padding: var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
    }
}