/*
 * ODV Track - Modern Analytics Dashboard
 * Complete Frontend Refactoring for Visual Excellence
 * Version: 2.0
 */

/* ===================================
   CSS Custom Properties (Design Tokens)
   =================================== */
:root {
    /* Color Palette */
    --color-primary: #2155FF;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #4b7bff;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    
    /* Neutral Colors */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-tertiary: #f3f4f6;
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-text-tertiary: #9ca3af;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    
    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --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;
    --font-size-4xl: 2.25rem;
    
    /* Spacing Scale */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Layout */
    --max-width-sm: 640px;
    --max-width-md: 768px;
    --max-width-lg: 1024px;
    --max-width-xl: 1280px;
    --max-width-2xl: 1536px;
    --nav-height: 64px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-base: 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);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-base: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-index Scale */
    --z-base: 0;
    --z-dropdown: 10;
    --z-sticky: 20;
    --z-fixed: 30;
    --z-modal-backdrop: 40;
    --z-modal: 50;
    --z-popover: 60;
    --z-tooltip: 70;
}

/* ===================================
   Global Reset & Base Styles
   =================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    min-height: 100vh;
}

/* Remove default margins */
h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd {
    margin: 0;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

/* Links */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
}

/* Forms */
input, textarea, select, button {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* ===================================
   Layout Components
   =================================== */

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width-2xl);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-8);
    }
}

/* ===================================
   Tab Navigation
   =================================== */
.tab-navigation {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 0;
    margin-bottom: 1.5rem;
}

.tab-button {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -2px;
}

.tab-button:hover {
    color: var(--color-primary);
    background: var(--color-bg-secondary);
}

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

.tab-content {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Navigation
   =================================== */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-4);
    max-width: var(--max-width-2xl);
    margin: 0 auto;
}

@media (min-width: 640px) {
    .nav-container {
        padding: 0 var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .nav-container {
        padding: 0 var(--spacing-8);
    }
}

.nav-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    white-space: nowrap;
}

.nav-left nav ul {
    display: none;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: var(--spacing-2);
}

@media (min-width: 768px) {
    .nav-left nav ul {
        display: flex;
    }
}

.nav-left nav a {
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-base);
}

.nav-left nav a:hover,
.nav-left nav a.active {
    background-color: var(--color-primary);
    color: white;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.nav-right span {
    display: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
    .nav-right span {
        display: block;
    }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none; /* Standardmäßig versteckt (Desktop) */
    padding: var(--spacing-2);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-primary);
}

/* Mobile: Menü-Button anzeigen */
@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: block;
    }
}

/* Desktop: Mobile-Menü-Button verstecken */
@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none !important;
    }
}

/* ===================================
   Main Layout
   =================================== */
body {
    padding-top: var(--nav-height);
}

.main-content {
    min-height: calc(100vh - var(--nav-height));
    padding: var(--spacing-6) 0;
    max-width: var(--max-width-2xl);
    margin: 0 auto;
}

/* Dashboard main container with better spacing */
main.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--spacing-8) var(--spacing-10);
}

@media (max-width: 1400px) {
    main.nav-container {
        padding: 0 var(--spacing-6) var(--spacing-8);
    }
}

@media (max-width: 768px) {
    main.nav-container {
        padding: 0 var(--spacing-4) var(--spacing-6);
    }
}

@media (min-width: 768px) {
    .main-content {
        padding: var(--spacing-8) 0;
    }
}

@media (min-width: 1024px) {
    .main-content {
        padding: var(--spacing-12) 0;
    }
}

/* Page Header */
.page-header {
    margin-bottom: var(--spacing-8);
    padding: 0 var(--spacing-4);
}

@media (min-width: 640px) {
    .page-header {
        padding: 0 var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .page-header {
        padding: 0 var(--spacing-8);
    }
}

.page-header h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-2);
}

@media (min-width: 768px) {
    .page-header h1 {
        font-size: var(--font-size-4xl);
    }
}

.subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

/* ===================================
   Cards & Content Blocks
   =================================== */
.card {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.card h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-4);
}

.card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-3);
}

/* ===================================
   Dashboard Components
   =================================== */

/* Legacy KPI styles - kept for backward compatibility but deprecated */
/* Use .stats-grid and .stat-card instead */

/* Card Components (Admin Style) */
.card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-6);
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.card-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0;
}

.card-body {
    padding: var(--spacing-5);
}

/* Chart wrapper for consistent padding */
.chart-wrapper {
    position: relative;
    width: 100%;
}

/* Admin header styling */
.admin-header {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-8) 0;
    margin-bottom: var(--spacing-8);
}

.admin-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-2) 0;
}

.admin-header p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

@media (max-width: 900px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* Stats Grid (matching admin panel) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-2);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ===================================
   Tables
   =================================== */
.table-container {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    width: 100%;
}

.table-header {
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 2px solid var(--color-border);
    background: linear-gradient(to bottom, var(--color-bg-secondary), var(--color-bg-tertiary));
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.table-toolbar {
    padding: var(--spacing-5) var(--spacing-6);
    background-color: var(--color-bg-tertiary);
    border-bottom: 2px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    align-items: center;
}

.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.data-table {
    width: 100%;
    min-width: 600px;
    font-size: var(--font-size-base);
}

.data-table th,
.data-table td {
    padding: var(--spacing-4) var(--spacing-5);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.data-table th {
    background-color: var(--color-bg-secondary);
    font-weight: 700;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    position: sticky;
    top: 0;
    z-index: var(--z-dropdown);
    white-space: nowrap;
}

.data-table tbody tr {
    transition: background-color 0.15s ease;
}

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

.data-table tbody tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}

.data-table td {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

/* Highlight important columns */
.data-table td:first-child,
.data-table th:first-child {
    font-weight: 600;
}

/* Better number alignment */
.data-table td:last-child,
.data-table th:last-child {
    text-align: right;
}

.data-table th.sortable {
    cursor: pointer;
    user-select: none;
}

.data-table th.sortable:hover {
    color: var(--color-text-primary);
}

/* ===================================
   Forms & Inputs
   =================================== */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="search"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(33, 85, 255, 0.1);
}

/* Search specific */
input[type="search"] {
    min-width: 200px;
    flex-grow: 1;
}

@media (min-width: 768px) {
    input[type="search"] {
        min-width: 300px;
    }
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

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

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

.btn-secondary {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

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

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-lg);
}

/* ===================================
   Status & Badges
   =================================== */
.status {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status.active {
    background-color: #d1fae5;
    color: #065f46;
}

.status.inactive {
    background-color: #fee2e2;
    color: #991b1b;
}

.status-badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.status-active {
    background-color: #d1fae5;
    color: #065f46;
}

.status-inactive {
    background-color: #fee2e2;
    color: #991b1b;
}

/* ===================================
   Admin Specific
   =================================== */
.admin-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-12) 0;
    margin-bottom: var(--spacing-8);
}

.admin-header h1 {
    color: white;
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-2);
}

@media (min-width: 768px) {
    .admin-header h1 {
        font-size: var(--font-size-4xl);
    }
}

.admin-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

@media (min-width: 640px) {
    .stats-grid {
        gap: var(--spacing-6);
    }
}

.stat-card {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    text-align: center;
    box-shadow: var(--shadow-base);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-2);
}

.stat-label {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.action-card {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-base);
}

.action-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2);
}

.action-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-4);
}

/* ===================================
   Utility Classes
   =================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.p-0 { padding: 0; }
.p-2 { padding: var(--spacing-2); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

/* Flexbox utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

/* Grid utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ===================================
   Special Components
   =================================== */

/* Source Icon */
.source-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: var(--font-size-xs);
}

/* Click ID */
.click-id {
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: inline-block;
    font-family: monospace;
    font-size: var(--font-size-sm);
}

/* Toggle Buttons */
.toggle-buttons {
    display: inline-flex;
    gap: var(--spacing-2);
}

.toggle-buttons button {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.toggle-buttons button:hover {
    background-color: var(--color-bg-secondary);
}

.toggle-buttons button.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Filter Section */
.filter-section {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    margin-bottom: var(--spacing-6);
    box-shadow: var(--shadow-sm);
}

.filter-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-5);
    padding: var(--spacing-6);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    min-width: 0;
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-select,
.filter-input {
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: var(--color-bg-primary);
    transition: all 0.2s ease;
    height: 44px;
    width: 100%;
}

.filter-select:hover,
.filter-input:hover {
    border-color: var(--color-primary-light);
}

.filter-select:focus,
.filter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(33, 85, 255, 0.1);
}

.filter-input[type="date"] {
    min-width: 140px;
}

.filter-input[type="number"] {
    max-width: 120px;
}

.custom-date-group {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.custom-date-group.hidden {
    display: none;
}

.filter-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: var(--spacing-4);
    justify-content: flex-end;
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-border-light);
}

.filter-actions .btn {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    min-width: 150px;
    height: 44px;
    font-weight: 600;
}

/* Responsive Filter Layout */
@media (min-width: 1400px) {
    .filter-container {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .filter-actions {
        grid-column: auto;
        border-top: none;
        padding-top: 0;
        margin-top: 0;
        align-self: end;
    }
}

@media (max-width: 1024px) {
    .filter-container {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: var(--spacing-4);
    }
    
    .filter-actions {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .filter-container {
        grid-template-columns: 1fr 1fr;
    }
    
    .filter-actions .btn {
        flex: 1;
        min-width: 0;
    }
}

@media (max-width: 480px) {
    .filter-container {
        grid-template-columns: 1fr;
        padding: var(--spacing-4);
    }
}

/* Horizontal Filter Layout (Compact) */
.filter-horizontal {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.filter-horizontal .filter-input,
.filter-horizontal .filter-select {
    height: 40px;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.filter-horizontal .filter-input:focus,
.filter-horizontal .filter-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(33, 85, 255, 0.1);
}

.filter-horizontal .btn {
    height: 40px;
    padding: 0 var(--spacing-5);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

@media (max-width: 1200px) {
    .filter-horizontal {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: var(--spacing-3);
    }
    
    .filter-horizontal > div:last-child {
        grid-column: 1 / -1;
        justify-content: center;
        margin-top: var(--spacing-2);
    }
}

@media (max-width: 768px) {
    .filter-horizontal {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-horizontal .filter-input,
    .filter-horizontal .filter-select {
        width: 100%;
    }
    
    .filter-horizontal > div:last-child {
        display: flex;
        gap: var(--spacing-2);
        margin-top: var(--spacing-3);
    }
    
    .filter-horizontal .btn {
        flex: 1;
    }
}

/* Vertical Filter Layout for Details Page */
.filter-grid-vertical {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-5);
}

.filter-group-full {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.filter-group-full .filter-input {
    width: 100%;
    padding: var(--spacing-4);
    font-size: var(--font-size-lg);
    height: 52px;
}

.filter-card .card-body {
    padding: var(--spacing-6);
    background: var(--color-bg-tertiary);
}

/* Dashboard page specific improvements */
.dashboard-page .card {
    margin-bottom: var(--spacing-5);
}

.dashboard-page .stats-grid {
    margin-bottom: var(--spacing-5);
}

.dashboard-page .chart-wrapper {
    padding: var(--spacing-4);
}

/* Maximize main chart on dashboard */
.dashboard-page .card:has(#mainChart) {
    margin-bottom: var(--spacing-6);
}

.dashboard-page .card:has(#mainChart) .chart-wrapper {
    height: 600px;
    padding: var(--spacing-5);
}

/* Details page specific improvements */
.details-page .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.details-page .card {
    margin-bottom: var(--spacing-6);
}

.details-page .table-wrapper {
    padding: 0;
    max-height: none;
}

@media (max-width: 768px) {
    .filter-row {
        grid-template-columns: 1fr;
    }
}

/* Export Section */
.export-section {
    margin-top: var(--spacing-6);
}

.export-form {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--spacing-4);
    margin-top: var(--spacing-4);
}

.export-form .form-row {
    display: flex;
    gap: var(--spacing-3);
    flex: 1;
    min-width: 300px;
}

.export-form .form-row input[type="text"] {
    flex: 2;
    min-width: 200px;
}

.export-form .form-row input[type="number"] {
    flex: 1;
    min-width: 80px;
}

.export-form input[type="text"], 
.export-form input[type="number"] {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.export-form label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.export-list {
    margin-top: var(--spacing-4);
}

.export-item {
    padding: var(--spacing-4);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-3);
    position: relative;
}

.export-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-2);
}

.export-item-info {
    flex: 1;
}

.export-item-actions {
    display: flex;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

.export-item-actions .btn {
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    min-height: auto;
}

.export-edit-form {
    display: none;
    margin-top: var(--spacing-3);
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--color-border);
}

.export-edit-form.active {
    display: block;
}

.export-edit-form .form-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-2);
}

.export-edit-form label {
    min-width: 120px;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.export-edit-form input[type="text"] {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.export-edit-form input[type="number"] {
    width: 80px;
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.export-edit-form .form-actions {
    display: flex;
    gap: var(--spacing-2);
    margin-top: var(--spacing-3);
}

.export-url {
    padding: var(--spacing-4);
    background: var(--color-bg-primary);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    word-break: break-all;
    margin-top: var(--spacing-3);
    color: var(--color-primary);
    line-height: 1.6;
    position: relative;
    padding-left: var(--spacing-10);
}

.export-url::before {
    content: "URL:";
    position: absolute;
    left: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    font-weight: 600;
    color: var(--color-text-secondary);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Button Variants */
.btn-danger {
    background-color: #dc3545;
    color: white;
    border-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
}

/* Actions Group */
.actions {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

/* Code blocks */
code {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: var(--font-size-sm);
    color: #e11d48;
}

/* Currency */
.currency {
    color: var(--color-text-secondary);
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .top-nav,
    .nav-container,
    .btn,
    .actions,
    .export-section {
        display: none !important;
    }
    
    body {
        padding-top: 0;
    }
    
    .main-content {
        padding: 0;
    }
    
    .card,
    .table-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card,
.kpi-card,
.stat-card,
.action-card {
    animation: fadeIn 0.3s ease-out;
}

/* ===================================
   Accessibility
   =================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===================================
   Dark Mode Support (Future)
   =================================== */
@media (prefers-color-scheme: dark) {
    /* Dark mode variables can be added here */
}

/* ===================================
   Legacy Support & Fixes
   =================================== */

/* Fix for old sidebar references */
.sidebar {
    display: none !important;
}

/* Ensure main content doesn't have conflicting margins */
.main-content {
    margin-left: 0 !important;
    margin-right: 0 !important;
    margin-top: 0 !important;
}

/* Header element within main-content */
header:not(.top-nav) {
    margin-bottom: var(--spacing-8);
}

/* ===================================
   Mobile Responsive Styles
   =================================== */
@media (max-width: 768px) {
    .top-nav {
        padding: var(--spacing-3) 0;
    }
    
    .nav-container {
        padding: 0 var(--spacing-4);
    }
    
    .kpi-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4);
    }
    
    .charts-row {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: var(--spacing-4);
    }
    
    /* Export form responsive */
    .export-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .export-form .form-row {
        flex-direction: column;
        min-width: auto;
    }
    
    .export-form .form-row input[type="text"],
    .export-form .form-row input[type="number"] {
        min-width: auto;
        width: 100%;
    }
    
    .export-item-header {
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .export-item-actions {
        align-self: flex-start;
    }
    
    .export-edit-form .form-group {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-1);
    }
    
    .export-edit-form label {
        min-width: auto;
    }
    
    .export-edit-form .form-actions {
        flex-direction: column;
    }
    
    .export-edit-form input[type="text"] {
        min-width: auto;
        width: 100%;
    }
    
    .export-edit-form .form-actions .btn {
        width: 100%;
    }
}