/**
 * Digitale Fahrzeugakte - Stylesheet
 * Corporate Design: Telematik Partner
 * Mobile First + Desktop optimiert
 */

/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
    /* Primärfarben (Telematik Partner) */
    --primary: #1a3a5c;
    --primary-light: #2a5a8c;
    --primary-dark: #0f2440;
    
    /* Akzentfarbe (Webfleet Orange) */
    --accent: #f57c00;
    --accent-light: #ff9800;
    --accent-dark: #e65100;
    
    /* Status-Farben */
    --success: #2e7d32;
    --success-light: #4caf50;
    --warning: #f9a825;
    --warning-light: #ffc107;
    --danger: #c62828;
    --danger-light: #ef5350;
    --info: #1565c0;
    --info-light: #42a5f5;
    
    /* Neutral-Farben */
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-muted: #a0aec0;
    --text-inverse: #ffffff;
    
    --bg-body: #f7fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #1a3a5c;
    --bg-header: #ffffff;
    --bg-hover: #edf2f7;
    --bg-active: #e2e8f0;
    
    --border-color: #e2e8f0;
    --border-light: #edf2f7;
    
    /* Schatten */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    
    /* Abstände */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Radien */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    
    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --header-height: 64px;
    
    /* Fonts */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ============================================================
   BASE STYLES
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--bg-body);
    line-height: 1.6;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

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

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

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

/* ============================================================
   LAYOUT
   ============================================================ */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    color: var(--text-inverse);
    z-index: 100;
    transition: width var(--transition);
    display: flex;
    flex-direction: column;
    overflow: visible;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    overflow: hidden;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-logo img {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.sidebar-logo span {
    font-weight: 600;
    font-size: 1.125rem;
    opacity: 1;
    transition: opacity var(--transition), width var(--transition);
    overflow: hidden;
}

.sidebar.collapsed .sidebar-logo span {
    opacity: 0;
    width: 0;
    visibility: hidden;
}

.sidebar-toggle {
    position: absolute;
    right: -12px;
    top: 76px;
    width: 24px;
    height: 24px;
    background: var(--accent);
    border: 2px solid var(--bg-body);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    z-index: 101;
    transition: transform var(--transition);
}

.sidebar-toggle:hover {
    transform: scale(1.1);
}

.sidebar.collapsed .sidebar-toggle svg {
    transform: rotate(180deg);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.nav-section {
    margin-bottom: var(--spacing-lg);
}

.nav-section-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.4);
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition), height var(--transition);
}

.sidebar.collapsed .nav-section-title {
    opacity: 0;
    height: 0;
    margin: 0;
    padding: 0;
    visibility: hidden;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-inverse);
}

.nav-item.active {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-inverse);
    border-left-color: var(--accent);
}

.nav-item svg,
.nav-item .nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-item span {
    opacity: 1;
    transition: opacity var(--transition), width var(--transition);
    overflow: hidden;
}

.sidebar.collapsed .nav-item span {
    opacity: 0;
    width: 0;
    visibility: hidden;
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    overflow: hidden;
}

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

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.sidebar-user-info {
    overflow: hidden;
    opacity: 1;
    transition: opacity var(--transition), width var(--transition);
}

.sidebar.collapsed .sidebar-user-info {
    opacity: 0;
    width: 0;
    visibility: hidden;
}

.sidebar-user-name {
    font-weight: 500;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
}

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

.sidebar.collapsed ~ .main-wrapper {
    margin-left: var(--sidebar-collapsed);
}

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

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    color: var(--text-primary);
}

.header-search {
    position: relative;
    width: 320px;
}

.header-search input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    background: var(--bg-body);
}

.header-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.1);
    background: var(--bg-card);
}

.header-search svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.header-search kbd {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    padding: 2px 6px;
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-mono);
}

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

.header-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

.header-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.header-btn .badge-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: 50%;
    border: 2px solid var(--bg-header);
}

.main-content {
    flex: 1;
    padding: var(--spacing-lg);
}

/* ============================================================
   PAGE HEADER
   ============================================================ */
.page-header {
    margin-bottom: var(--spacing-lg);
}

.page-header-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

/* ============================================================
   CARDS
   ============================================================ */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

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

.card-title {
    font-size: 1rem;
    font-weight: 600;
}

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

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    background: var(--bg-body);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

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

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-left: 4px solid var(--accent);
    transition: all var(--transition-fast);
}

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

.stat-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.stat-card-title {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.stat-card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 124, 0, 0.1);
    color: var(--accent);
}

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

.stat-card-change {
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.stat-card-change.negative {
    color: var(--danger);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

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

.btn-accent {
    background: var(--accent);
    color: var(--text-inverse);
}

.btn-accent:hover:not(:disabled) {
    background: var(--accent-dark);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-active);
}

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

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

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger-light);
}

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

.btn-success:hover:not(:disabled) {
    background: var(--success-light);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
}

.btn-icon {
    padding: var(--spacing-sm);
}

.btn-block {
    width: 100%;
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-label.required::after {
    content: " *";
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-card);
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:disabled {
    background: var(--bg-hover);
    cursor: not-allowed;
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control {
    cursor: pointer;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: var(--spacing-xs);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checkbox-label,
.radio-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.9rem;
}

.checkbox-label input,
.radio-label input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

/* ============================================================
   TABLES
   ============================================================ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

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

.table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
    background: var(--bg-body);
    white-space: nowrap;
}

.table tbody tr {
    transition: background var(--transition-fast);
}

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

.table tbody tr:last-child td {
    border-bottom: none;
}

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

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 2px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.badge-success {
    background: rgba(46, 125, 50, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(249, 168, 37, 0.15);
    color: #b57a00;
}

.badge-danger {
    background: rgba(198, 40, 40, 0.1);
    color: var(--danger);
}

.badge-info {
    background: rgba(21, 101, 192, 0.1);
    color: var(--info);
}

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

.badge-primary {
    background: rgba(26, 58, 92, 0.1);
    color: var(--primary);
}

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.alert-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    opacity: 0.6;
}

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

.alert-success {
    background: rgba(46, 125, 50, 0.1);
    color: var(--success);
    border: 1px solid rgba(46, 125, 50, 0.2);
}

.alert-error {
    background: rgba(198, 40, 40, 0.1);
    color: var(--danger);
    border: 1px solid rgba(198, 40, 40, 0.2);
}

.alert-warning {
    background: rgba(249, 168, 37, 0.1);
    color: #8a5d00;
    border: 1px solid rgba(249, 168, 37, 0.2);
}

.alert-info {
    background: rgba(21, 101, 192, 0.1);
    color: var(--info);
    border: 1px solid rgba(21, 101, 192, 0.2);
}

/* ============================================================
   TABS
   ============================================================ */
.tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 2px solid var(--border-light);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

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

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================================
   MODAL
   ============================================================ */
.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);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

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

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform var(--transition);
}

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

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

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

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    color: var(--text-muted);
    border-radius: var(--radius);
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1;
}

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

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

.pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.pagination-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
}

.pagination-btn.active {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

.pagination-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    color: var(--text-muted);
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
    margin-bottom: var(--spacing-md);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item::after {
    content: "/";
    margin-left: var(--spacing-xs);
    color: var(--text-muted);
}

.breadcrumb-item:last-child::after {
    display: none;
}

.breadcrumb-item a {
    color: var(--text-secondary);
}

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

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

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    color: var(--text-secondary);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.empty-state-text {
    margin-bottom: var(--spacing-md);
}

/* ============================================================
   DROPDOWN
   ============================================================ */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

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

.dropdown-item svg {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-light);
    margin: var(--spacing-xs) 0;
}

/* ============================================================
   TAGS
   ============================================================ */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    background: var(--bg-hover);
    color: var(--text-secondary);
}

.tag-removable {
    cursor: pointer;
}

.tag-remove {
    font-size: 1rem;
    line-height: 1;
    opacity: 0.6;
}

.tag-remove:hover {
    opacity: 1;
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

/* ============================================================
   FILE UPLOAD
   ============================================================ */
.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload:hover,
.file-upload.dragover {
    border-color: var(--primary);
    background: rgba(26, 58, 92, 0.03);
}

.file-upload svg {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.file-upload-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.file-upload-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: var(--spacing-xs);
}

/* ============================================================
   SEARCH RESULTS (Global Search)
   ============================================================ */
.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 200;
    display: none;
}

.search-results.active {
    display: block;
}

.search-results-group {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

.search-results-group:last-child {
    border-bottom: none;
}

.search-results-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:hover {
    background: var(--bg-hover);
}

.search-result-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    background: var(--bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-result-info {
    flex: 1;
    min-width: 0;
}

.search-result-title {
    font-weight: 500;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-result-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================================
   LOADING
   ============================================================ */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================================
   TOOLTIP
   ============================================================ */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--text-primary);
    color: var(--text-inverse);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

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

.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 600; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

.hidden { display: none !important; }
.truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================================
   AUTH PAGES
   ============================================================ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    padding: var(--spacing-xl);
}

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

.auth-logo img {
    height: 48px;
}

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

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

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

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .header-search {
        width: 240px;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }
    
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-toggle {
        display: none;
    }
    
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
    }
    
    .sidebar.open ~ .sidebar-overlay {
        opacity: 1;
        visibility: visible;
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .sidebar.collapsed ~ .main-wrapper {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .header-search {
        display: none;
    }
    
    .header-search.mobile-active {
        display: block;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        padding: var(--spacing-md);
        background: var(--bg-header);
        border-bottom: 1px solid var(--border-color);
        z-index: 49;
        width: auto;
    }
    
    .header-search.mobile-active input {
        width: 100%;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .page-header-top {
        flex-direction: column;
        align-items: stretch;
    }
    
    .page-actions {
        justify-content: stretch;
    }
    
    .page-actions .btn {
        flex: 1;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .modal {
        max-width: 100%;
        max-height: 100%;
        border-radius: 0;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .auth-card {
        padding: var(--spacing-lg);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .table th,
    .table td {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
    .sidebar,
    .main-header,
    .page-actions,
    .btn,
    .pagination {
        display: none !important;
    }
    
    .main-wrapper {
        margin-left: 0 !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ============================================================
   DETAIL TABLE (für Detailansichten)
   ============================================================ */
.detail-table {
    width: 100%;
    border-collapse: collapse;
}

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

.detail-table th {
    width: 160px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-hover);
    white-space: nowrap;
}

.detail-table td {
    color: var(--text-primary);
}

.detail-table tr:last-child th,
.detail-table tr:last-child td {
    border-bottom: none;
}

/* Responsive */
@media (max-width: 576px) {
    .detail-table th {
        width: 120px;
        font-size: 0.85rem;
    }
    
    .detail-table th,
    .detail-table td {
        padding: 0.5rem 0.75rem;
    }
}