/**
 * KMZ Verleihsystem - Material Design 3 Inspired
 * Farbschema: Landkreis Heilbronn (Rot, Gelb, Grün)
 * Inspiriert von https://m3.material.io/
 */

/* =====================================================
   CSS CUSTOM PROPERTIES - LANDKREIS HEILBRONN THEME
   ===================================================== */
:root {
    /* === Landkreis Farben === */
    --lk-rot: #C41E3A;
    --lk-rot-dark: #9E1830;
    --lk-rot-light: #E8495F;
    --lk-gelb: #F5C400;
    --lk-gelb-dark: #D4A900;
    --lk-gelb-light: #FFD93D;
    --lk-gruen: #2E8B57;
    --lk-gruen-dark: #236B43;
    --lk-gruen-light: #3DAA6D;
    
    /* === Primary (Rot - Hauptaktionsfarbe) === */
    --md-sys-color-primary: #C41E3A;
    --md-sys-color-on-primary: #ffffff;
    --md-sys-color-primary-container: #FFDAD9;
    --md-sys-color-on-primary-container: #410006;
    --md-sys-color-primary-hover: #9E1830;
    
    /* === Secondary (Grün - Sekundäre Aktionen) === */
    --md-sys-color-secondary: #2E8B57;
    --md-sys-color-on-secondary: #ffffff;
    --md-sys-color-secondary-container: #C8F5D8;
    --md-sys-color-on-secondary-container: #00210E;
    --md-sys-color-secondary-hover: #236B43;
    
    /* === Tertiary (Gelb - Akzente & Highlights) === */
    --md-sys-color-tertiary: #F5C400;
    --md-sys-color-on-tertiary: #3D2E00;
    --md-sys-color-tertiary-container: #FFF0C3;
    --md-sys-color-on-tertiary-container: #231B00;
    
    /* === Status Colors === */
    --md-sys-color-error: #BA1A1A;
    --md-sys-color-on-error: #ffffff;
    --md-sys-color-error-container: #FFDAD6;
    --md-sys-color-on-error-container: #410002;
    
    --md-sys-color-success: #2E8B57;
    --md-sys-color-on-success: #ffffff;
    --md-sys-color-success-container: #C8F5D8;
    
    --md-sys-color-warning: #F5C400;
    --md-sys-color-on-warning: #3D2E00;
    --md-sys-color-warning-container: #FFF0C3;
    
    --md-sys-color-info: #0066CC;
    --md-sys-color-on-info: #ffffff;
    --md-sys-color-info-container: #D6E4FF;
    
    /* === Surface Colors (Helle Neutrals) === */
    --md-sys-color-surface: #FFFBFF;
    --md-sys-color-surface-dim: #E3E0E4;
    --md-sys-color-surface-bright: #FFFBFF;
    --md-sys-color-surface-container-lowest: #ffffff;
    --md-sys-color-surface-container-low: #F8F5F9;
    --md-sys-color-surface-container: #F2EFF3;
    --md-sys-color-surface-container-high: #ECE9ED;
    --md-sys-color-surface-container-highest: #E6E3E7;
    
    /* === On Surface === */
    --md-sys-color-on-surface: #1C1B1E;
    --md-sys-color-on-surface-variant: #49454E;
    
    /* === Outline === */
    --md-sys-color-outline: #7A757F;
    --md-sys-color-outline-variant: #CBC4CF;
    
    /* === Background === */
    --md-sys-color-background: #FFFBFF;
    --md-sys-color-on-background: #1C1B1E;
    
    /* === Inverse === */
    --md-sys-color-inverse-surface: #313033;
    --md-sys-color-inverse-on-surface: #F4EFF4;
    --md-sys-color-inverse-primary: #FFB3B3;
    
    /* === Shadow & Scrim === */
    --md-sys-color-shadow: rgba(0, 0, 0, 0.15);
    --md-sys-color-scrim: rgba(0, 0, 0, 0.4);
    
    /* === Legacy Variable Mapping === */
    --color-primary: var(--md-sys-color-primary);
    --color-primary-hover: var(--md-sys-color-primary-hover);
    --color-secondary: var(--md-sys-color-secondary);
    --color-success: var(--md-sys-color-success);
    --color-warning: var(--md-sys-color-warning);
    --color-error: var(--md-sys-color-error);
    --color-info: var(--md-sys-color-info);
    --color-text: var(--md-sys-color-on-surface);
    --color-text-muted: var(--md-sys-color-on-surface-variant);
    --color-border: var(--md-sys-color-outline-variant);
    --color-bg: var(--md-sys-color-background);
    --color-surface: var(--md-sys-color-surface);
    
    /* === Typography === */
    --font-family: 'Inter', 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-display: 'Plus Jakarta Sans', 'Inter', sans-serif;
    
    /* === Shape (Border Radius) === */
    --md-sys-shape-corner-none: 0;
    --md-sys-shape-corner-extra-small: 4px;
    --md-sys-shape-corner-small: 8px;
    --md-sys-shape-corner-medium: 12px;
    --md-sys-shape-corner-large: 16px;
    --md-sys-shape-corner-extra-large: 28px;
    --md-sys-shape-corner-full: 9999px;
    
    /* === Elevation (Shadows) === */
    --md-sys-elevation-level0: none;
    --md-sys-elevation-level1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
    --md-sys-elevation-level2: 0 3px 6px rgba(0,0,0,0.12), 0 2px 4px rgba(0,0,0,0.08);
    --md-sys-elevation-level3: 0 6px 12px rgba(0,0,0,0.12), 0 4px 6px rgba(0,0,0,0.08);
    --md-sys-elevation-level4: 0 10px 20px rgba(0,0,0,0.12), 0 6px 8px rgba(0,0,0,0.08);
    --md-sys-elevation-level5: 0 15px 30px rgba(0,0,0,0.12), 0 8px 10px rgba(0,0,0,0.08);
    
    /* === Spacing === */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* === Transitions === */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    margin: 0;
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--md-sys-color-on-surface);
    background-color: var(--md-sys-color-background);
}

/* =====================================================
   TYPOGRAPHY
   ===================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-display);
    font-weight: 600;
    line-height: 1.25;
    margin: 0 0 1rem;
    color: var(--md-sys-color-on-surface);
}

h1 { font-size: 2.25rem; font-weight: 700; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin: 0 0 1rem;
}

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

a:hover {
    color: var(--md-sys-color-primary-hover);
    text-decoration: underline;
}

.text-muted { color: var(--md-sys-color-on-surface-variant); }
.text-primary { color: var(--md-sys-color-primary); }
.text-success { color: var(--md-sys-color-success); }
.text-warning { color: var(--md-sys-color-tertiary); }
.text-error { color: var(--md-sys-color-error); }
.text-center { text-align: center; }
.text-right { text-align: right; }

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

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

.py-4 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-5 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-lg); }
.ml-2 { margin-left: var(--spacing-sm); }

.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* =====================================================
   CARDS - Material Design 3 Style
   ===================================================== */
.card {
    background: var(--md-sys-color-surface-container-lowest);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-large);
    box-shadow: var(--md-sys-elevation-level1);
    overflow: hidden;
    transition: box-shadow var(--transition-medium);
}

.card:hover {
    box-shadow: var(--md-sys-elevation-level2);
}

.card-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface-container-low);
}

.card-header h3 {
    margin: 0;
    font-size: 1.125rem;
}

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

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--md-sys-color-outline-variant);
    background: var(--md-sys-color-surface-container-low);
}

/* Filled Card Variant */
.card-filled {
    background: var(--md-sys-color-surface-container-highest);
    border: none;
}

/* Elevated Card Variant */
.card-elevated {
    border: none;
    box-shadow: var(--md-sys-elevation-level2);
}

.card-elevated:hover {
    box-shadow: var(--md-sys-elevation-level3);
}

/* =====================================================
   BUTTONS - Material Design 3 Style
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 24px;
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
}

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

/* Filled Button (Primary) */
.btn-primary {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.btn-primary:hover:not(:disabled) {
    background: var(--md-sys-color-primary-hover);
    box-shadow: var(--md-sys-elevation-level1);
}

.btn-primary:active:not(:disabled) {
    transform: scale(0.98);
}

/* Filled Tonal Button (Secondary) */
.btn-secondary {
    background: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--md-sys-color-surface-container-high);
    box-shadow: var(--md-sys-elevation-level1);
}

/* Outlined Button */
.btn-outline {
    background: transparent;
    color: var(--md-sys-color-primary);
    border: 1px solid var(--md-sys-color-outline);
}

.btn-outline:hover:not(:disabled) {
    background: var(--md-sys-color-primary-container);
}

/* Success Button */
.btn-success {
    background: var(--md-sys-color-success);
    color: var(--md-sys-color-on-success);
}

.btn-success:hover:not(:disabled) {
    background: var(--md-sys-color-secondary-hover);
    box-shadow: var(--md-sys-elevation-level1);
}

/* Warning Button */
.btn-warning {
    background: var(--md-sys-color-warning);
    color: var(--md-sys-color-on-warning);
}

/* Error/Danger Button */
.btn-danger, .btn-error {
    background: var(--md-sys-color-error);
    color: var(--md-sys-color-on-error);
}

.btn-danger:hover:not(:disabled), .btn-error:hover:not(:disabled) {
    background: #9C1515;
    box-shadow: var(--md-sys-elevation-level1);
}

/* Button Sizes */
.btn-sm {
    padding: 6px 16px;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

/* Icon Button */
.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--md-sys-shape-corner-full);
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

/* =====================================================
   FORMS - Material Design 3 Style
   ===================================================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

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

.form-label.required::after {
    content: ' *';
    color: var(--md-sys-color-error);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--md-sys-color-on-surface);
    background: var(--md-sys-color-surface-container-lowest);
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-small);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--md-sys-color-primary);
    box-shadow: 0 0 0 2px var(--md-sys-color-primary-container);
}

.form-input::placeholder {
    color: var(--md-sys-color-on-surface-variant);
}

.form-input:disabled {
    background: var(--md-sys-color-surface-container);
    cursor: not-allowed;
}

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

/* Form with icon */
.form-input-group {
    position: relative;
}

.form-input-group .form-input {
    padding-left: 44px;
}

.form-input-group .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--md-sys-color-on-surface-variant);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--md-sys-color-primary);
    cursor: pointer;
}

/* =====================================================
   TABLES
   ===================================================== */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

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

.table th {
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    background: var(--md-sys-color-surface-container-low);
}

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

.table tbody tr:hover {
    background: var(--md-sys-color-surface-container);
}

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

/* =====================================================
   ALERTS / MESSAGES
   ===================================================== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--md-sys-shape-corner-medium);
    font-size: 0.9375rem;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert-success {
    background: var(--md-sys-color-success-container);
    color: #00210E;
    border-left: 4px solid var(--md-sys-color-success);
}

.alert-error, .alert-danger {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
    border-left: 4px solid var(--md-sys-color-error);
}

.alert-warning {
    background: var(--md-sys-color-warning-container);
    color: var(--md-sys-color-on-tertiary-container);
    border-left: 4px solid var(--md-sys-color-warning);
}

.alert-info {
    background: var(--md-sys-color-info-container);
    color: #001D3D;
    border-left: 4px solid var(--md-sys-color-info);
}

/* =====================================================
   BADGES / CHIPS
   ===================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--md-sys-shape-corner-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.badge-success {
    background: var(--md-sys-color-success-container);
    color: #00210E;
}

.badge-warning {
    background: var(--md-sys-color-warning-container);
    color: var(--md-sys-color-on-tertiary-container);
}

.badge-error, .badge-danger {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.badge-secondary {
    background: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
}

/* =====================================================
   NAVIGATION - Top App Bar
   ===================================================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--md-sys-color-surface);
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    box-shadow: var(--md-sys-elevation-level1);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
}

.navbar-brand img {
    height: 40px;
    width: auto;
}

.navbar-brand span {
    font-family: var(--font-family-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
    text-decoration: none;
    border-radius: var(--md-sys-shape-corner-full);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
}

.nav-link.active {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
}

/* =====================================================
   SIDEBAR - Navigation Drawer
   ===================================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: var(--md-sys-color-surface-container-low);
    border-right: 1px solid var(--md-sys-color-outline-variant);
    overflow-y: auto;
    z-index: 200;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.sidebar-nav {
    padding: var(--spacing-md);
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: 4px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
    text-decoration: none;
    border-radius: var(--md-sys-shape-corner-full);
    transition: all var(--transition-fast);
}

.sidebar-nav-item:hover {
    background: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
}

.sidebar-nav-item.active {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-primary);
}

.sidebar-nav-item .icon {
    width: 24px;
    text-align: center;
}

/* Main content with sidebar */
.main-with-sidebar {
    margin-left: 280px;
    min-height: 100vh;
}

/* =====================================================
   MODAL / DIALOG
   ===================================================== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: var(--md-sys-color-scrim);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-extra-large);
    box-shadow: var(--md-sys-elevation-level5);
    max-width: 560px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.modal-header h3 {
    margin: 0;
}

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

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

/* =====================================================
   GRID SYSTEM
   ===================================================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 { grid-template-columns: 1fr; }
    
    .main-with-sidebar {
        margin-left: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-medium);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
}

/* =====================================================
   PRODUCT CARD (Webshop)
   ===================================================== */
.product-card {
    background: var(--md-sys-color-surface-container-lowest);
    border-radius: var(--md-sys-shape-corner-large);
    overflow: hidden;
    box-shadow: var(--md-sys-elevation-level1);
    transition: all var(--transition-medium);
}

.product-card:hover {
    box-shadow: var(--md-sys-elevation-level3);
    transform: translateY(-2px);
}

.product-card-image {
    aspect-ratio: 4/3;
    background: var(--md-sys-color-surface-container);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.product-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--md-sys-color-on-surface);
}

.product-card-category {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--spacing-sm);
}

.product-card-footer {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-availability {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8125rem;
}

.product-availability.available {
    color: var(--md-sys-color-success);
}

.product-availability.unavailable {
    color: var(--md-sys-color-error);
}

/* =====================================================
   CALENDAR WIDGET
   ===================================================== */
.calendar {
    background: var(--md-sys-color-surface-container-lowest);
    border-radius: var(--md-sys-shape-corner-large);
    overflow: hidden;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.calendar-day-header {
    padding: var(--spacing-sm);
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface-variant);
    background: var(--md-sys-color-surface-container-low);
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border-radius: var(--md-sys-shape-corner-full);
    margin: 2px;
}

.calendar-day:hover {
    background: var(--md-sys-color-surface-container);
}

.calendar-day.today {
    border: 2px solid var(--md-sys-color-primary);
    font-weight: 600;
}

.calendar-day.selected {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.calendar-day.holiday {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-error);
}

.calendar-day.disabled {
    color: var(--md-sys-color-outline);
    cursor: not-allowed;
}

/* =====================================================
   STATS CARD
   ===================================================== */
.stat-card {
    background: var(--md-sys-color-surface-container-lowest);
    border-radius: var(--md-sys-shape-corner-large);
    padding: var(--spacing-lg);
    box-shadow: var(--md-sys-elevation-level1);
}

.stat-card-value {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-family-display);
    color: var(--md-sys-color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-card-label {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

.stat-card.success .stat-card-value { color: var(--md-sys-color-success); }
.stat-card.warning .stat-card-value { color: var(--md-sys-color-tertiary); }
.stat-card.error .stat-card-value { color: var(--md-sys-color-error); }

/* =====================================================
   LOADING SPINNER
   ===================================================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--md-sys-color-surface-container);
    border-top-color: var(--md-sys-color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* =====================================================
   UTILITIES
   ===================================================== */
.hidden { display: none !important; }
.visible { display: block !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Decorative Header Bar with Landkreis Colors */
.lk-header-bar {
    height: 4px;
    background: linear-gradient(90deg, 
        var(--lk-rot) 0%, 
        var(--lk-rot) 33.33%, 
        var(--lk-gelb) 33.33%, 
        var(--lk-gelb) 66.66%, 
        var(--lk-gruen) 66.66%, 
        var(--lk-gruen) 100%
    );
}

/* Landkreis accent border */
.lk-border-accent {
    border-left: 4px solid;
    border-image: linear-gradient(180deg, var(--lk-rot), var(--lk-gelb), var(--lk-gruen)) 1;
}

/* =====================================================
   CODE / MONOSPACE
   ===================================================== */
code {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.875em;
    padding: 2px 6px;
    background: var(--md-sys-color-surface-container);
    border-radius: var(--md-sys-shape-corner-extra-small);
    color: var(--md-sys-color-primary);
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
    background: linear-gradient(135deg, var(--lk-rot) 0%, var(--lk-rot-dark) 100%);
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: white;
}

.hero p {
    font-size: 1.125rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* =====================================================
   CATEGORIES GRID
   ===================================================== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--md-sys-color-surface-container-lowest);
    border-radius: var(--md-sys-shape-corner-large);
    box-shadow: var(--md-sys-elevation-level1);
    text-decoration: none;
    transition: all var(--transition-medium);
}

.category-card:hover {
    box-shadow: var(--md-sys-elevation-level3);
    transform: translateY(-2px);
    text-decoration: none;
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.category-name {
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--spacing-xs);
}

.category-count {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* Background Alt */
[style*="--color-bg-alt"] {
    background: var(--md-sys-color-surface-container-low) !important;
}

/* =====================================================
   AUTH PAGES (Login, Register, etc.)
   ===================================================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, 
        var(--md-sys-color-surface-container-low) 0%, 
        var(--md-sys-color-surface-container) 100%
    );
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--md-sys-color-surface-container-lowest);
    border-radius: var(--md-sys-shape-corner-extra-large);
    box-shadow: var(--md-sys-elevation-level3);
    overflow: hidden;
}

.auth-header {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-md);
    text-align: center;
    background: linear-gradient(135deg, var(--lk-rot) 0%, var(--lk-rot-dark) 100%);
    color: white;
}

.auth-header h1 {
    margin: 0 0 var(--spacing-xs);
    font-size: 1.75rem;
    color: inherit;
}

.auth-header p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.9375rem;
}

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

.auth-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    background: var(--md-sys-color-surface-container-low);
    border-top: 1px solid var(--md-sys-color-outline-variant);
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

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

.mb-0 { margin-bottom: 0; }
.text-sm { font-size: 0.875rem; }

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    .navbar,
    .sidebar,
    .btn,
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .main-with-sidebar {
        margin-left: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}