/**
 * Unified Dark/Light Mode System für MYP Platform
 * ===============================================
 * 
 * Konsolidiert alle Theme-Inkonsistenzen in einer einheitlichen Implementierung
 * Ersetzt: input.css, components.css, professional-theme.css Dark Mode-Teile
 * 
 * Author: Till Tomczak - MYP Team
 * Zweck: Behebung aller UI Dark/Light Mode Inkonsistenzen
 * Version: 2.0 - Enhanced for Perfect Light/Dark Balance
 */

/* ===== UNIFIED CSS VARIABLES SYSTEM ===== */
:root {
    /* === MERCEDES-BENZ BRAND COLORS === */
    --mb-primary: #0073ce;
    --mb-primary-dark: #005a9f;
    --mb-primary-light: #1e88e5;
    --mb-secondary: #00adef;
    --mb-black: #000000;
    --mb-white: #ffffff;
    --mb-silver: #c4c4c4;
    --mb-gray: #666666;
    
    /* === LIGHT MODE FOUNDATION (Optimiert für maximale Klarheit) === */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-surface: #fefefe;
    --bg-overlay: rgba(255, 255, 255, 0.95);
    --bg-modal: rgba(255, 255, 255, 0.98);
    --bg-input: #ffffff;
    --bg-input-focus: #ffffff;
    --bg-sidebar: #f9fafb;
    --bg-navbar: rgba(255, 255, 255, 0.95);
    --bg-dropdown: #ffffff;
    
    /* === TEXT COLORS LIGHT (Optimiert für perfekte Lesbarkeit) === */
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-tertiary: #6b7280;
    --text-muted: #9ca3af;
    --text-accent: var(--mb-primary);
    --text-on-primary: var(--mb-white);
    --text-success: #059669;
    --text-warning: #d97706;
    --text-error: #dc2626;
    --text-link: var(--mb-primary);
    --text-link-hover: var(--mb-primary-dark);
    
    /* === BORDER COLORS LIGHT (Subtile aber sichtbare Grenzen) === */
    --border-primary: #e5e7eb;
    --border-secondary: #d1d5db;
    --border-focus: var(--mb-primary);
    --border-error: #f87171;
    --border-success: #34d399;
    --border-warning: #fbbf24;
    --border-hover: #c2c7d0;
    
    /* === SHADOWS LIGHT (Sanfte, professionelle Schatten) === */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* === GLASSMORPHISM LIGHT (Subtil und elegant) === */
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --glass-blur: blur(16px);
    
    /* === INTERACTIVE STATES LIGHT (Klare Rückmeldung) === */
    --hover-bg: rgba(0, 115, 206, 0.04);
    --active-bg: rgba(0, 115, 206, 0.08);
    --focus-ring: 0 0 0 3px rgba(0, 115, 206, 0.1);
    --hover-card: rgba(0, 0, 0, 0.02);
    --active-card: rgba(0, 0, 0, 0.04);
    
    /* === GRADIENTS LIGHT (Dezente Verläufe) === */
    --gradient-primary: linear-gradient(135deg, #ffffff 0%, #fafbfc 100%);
    --gradient-card: linear-gradient(135deg, #ffffff 0%, #fcfcfd 100%);
    --gradient-modal: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    --gradient-button: linear-gradient(135deg, var(--mb-primary) 0%, var(--mb-primary-dark) 100%);
    --gradient-navbar: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.95) 100%);
}

/* ===== DARK MODE OVERRIDES (Optimiert für Augenkomfort und Kontrast) ===== */
.dark {
    /* === DARK MODE FOUNDATION (Mercedes-Schwarz mit warmen Akzenten) === */
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #121212;
    --bg-card: #0f0f0f;
    --bg-surface: #080808;
    --bg-overlay: rgba(0, 0, 0, 0.95);
    --bg-modal: rgba(15, 15, 15, 0.98);
    --bg-input: #121212;
    --bg-input-focus: #1a1a1a;
    --bg-sidebar: #050505;
    --bg-navbar: rgba(0, 0, 0, 0.95);
    --bg-dropdown: #0f0f0f;
    
    /* === TEXT COLORS DARK (Hoher Kontrast für Lesbarkeit) === */
    --text-primary: #ffffff;
    --text-secondary: #f8fafc;
    --text-tertiary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-accent: #ffffff;
    --text-on-primary: #000000;
    --text-success: #10b981;
    --text-warning: #f59e0b;
    --text-error: #ef4444;
    --text-link: #ffffff;
    --text-link-hover: #f3f4f6;
    
    /* === BORDER COLORS DARK (Subtile aber sichtbare Abgrenzungen) === */
    --border-primary: #1f1f1f;
    --border-secondary: #2a2a2a;
    --border-focus: #ffffff;
    --border-error: #ef4444;
    --border-success: #10b981;
    --border-warning: #f59e0b;
    --border-hover: #333333;
    
    /* === SHADOWS DARK (Tiefere Schatten für Depth) === */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
    --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-card-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    
    /* === GLASSMORPHISM DARK (Elegante Transparenz) === */
    --glass-bg: rgba(15, 15, 15, 0.9);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    --glass-blur: blur(16px);
    
    /* === INTERACTIVE STATES DARK (Klare visuelle Rückmeldung) === */
    --hover-bg: rgba(255, 255, 255, 0.05);
    --active-bg: rgba(255, 255, 255, 0.1);
    --focus-ring: 0 0 0 3px rgba(255, 255, 255, 0.2);
    --hover-card: rgba(255, 255, 255, 0.03);
    --active-card: rgba(255, 255, 255, 0.06);
    
    /* === GRADIENTS DARK (Subtile Verläufe in Schwarz) === */
    --gradient-primary: linear-gradient(135deg, #000000 0%, #0a0a0a 100%);
    --gradient-card: linear-gradient(135deg, #0f0f0f 0%, #0a0a0a 100%);
    --gradient-modal: linear-gradient(135deg, #121212 0%, #0f0f0f 100%);
    --gradient-button: linear-gradient(135deg, #ffffff 0%, #f5f5f5 100%);
    --gradient-navbar: linear-gradient(135deg, rgba(0, 0, 0, 0.95) 0%, rgba(10, 10, 10, 0.95) 100%);
}

/* ===== UNIFIED COMPONENT STYLES ===== */

/* === OPTIMIZED ROUNDED BORDERS (Performance-optimiert) === */
.btn, .form-input, input, textarea, select, button {
    border-radius: 12px;
}

.card, .modal, .glass-card, .mercedes-modal {
    border-radius: 20px;
}

.badge, .btn-sm {
    border-radius: 16px;
}

.avatar, .profile-image {
    border-radius: 50%;
}

/* === OPTIMIZED SPACING (Nur bei Bedarf verwenden) === */
.spacing-xs { margin: 0.25rem; padding: 0.25rem; }
.spacing-sm { margin: 0.5rem; padding: 0.5rem; }
.spacing-md { margin: 1rem; padding: 1rem; }

/* === BUTTONS (Optimiert für beide Modi) === */
.btn, button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 500;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-card);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    margin: 0.25rem;
    cursor: pointer;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.btn:hover, button:hover {
    background: var(--hover-card);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-1px);
    border-color: var(--border-hover);
}

.btn:focus {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn:active {
    transform: translateY(0);
    background: var(--active-card);
}

/* Primary Button - Mercedes Brand */
.btn-primary {
    background: var(--gradient-button);
    color: var(--text-on-primary);
    border: 1px solid transparent;
    box-shadow: 0 4px 12px rgba(0, 115, 206, 0.25);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--mb-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 115, 206, 0.35);
}

.btn-primary:focus {
    box-shadow: var(--focus-ring), 0 4px 12px rgba(0, 115, 206, 0.25);
}

/* Dark Mode Button Adaptations */
.dark .btn {
    border-color: var(--border-primary);
    box-shadow: var(--shadow-card);
}

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

.dark .btn-primary {
    background: var(--gradient-button);
    color: var(--text-on-primary);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

.dark .btn-primary:hover {
    background: #f3f4f6;
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.15);
}

/* Secondary Button */
.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-secondary);
}

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

/* Danger Button */
.btn-danger {
    background: var(--text-error);
    color: white;
    border: 1px solid var(--border-error);
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

/* Success Button */
.btn-success {
    background: var(--text-success);
    color: white;
    border: 1px solid var(--border-success);
}

.btn-success:hover {
    background: #047857;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

/* === CARDS (Perfekte Darstellung in beiden Modi) === */
.card, .dashboard-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-card);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1.5rem;
    margin: 0.75rem;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.card:hover, .dashboard-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    border-color: var(--border-hover);
}

.card:focus-within {
    border-color: var(--border-focus);
    box-shadow: var(--focus-ring);
}

/* Glass Cards für spezielle Anwendungen */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 1.5rem;
    margin: 0.75rem;
    border-radius: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    border-color: var(--glass-border);
}

/* Dark Mode Spezifische Card-Styles */
.dark .card, .dark .dashboard-card {
    background: var(--gradient-card);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-card);
}

.dark .card:hover, .dark .dashboard-card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: var(--border-hover);
}

.dark .glass-card {
    background: var(--glass-bg);
    border-color: var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Spezielle Card-Varianten */
.card-compact {
    padding: 1rem;
    border-radius: 12px;
}

.card-large {
    padding: 2.5rem;
    border-radius: 20px;
}

.card-bordered {
    border-width: 2px;
}

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

.card-flat {
    box-shadow: none;
    border: 1px solid var(--border-secondary);
}

/* Card Headers und Content */
.card-header {
    border-bottom: 1px solid var(--border-primary);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.card-title {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0.25rem 0 0 0;
}

.card-content {
    color: var(--text-secondary);
    line-height: 1.6;
}

.card-footer {
    border-top: 1px solid var(--border-primary);
    padding-top: 1rem;
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* === MODALS === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    cursor: pointer;
}

.modal-overlay.hidden {
    display: none !important;
}

.dark .modal-overlay {
    background: rgba(0, 0, 0, 0.7);
}

.modal {
    background: var(--gradient-modal);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    box-shadow: var(--shadow-modal);
    backdrop-filter: var(--glass-blur);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
}

.modal.show {
    transform: scale(1);
    opacity: 1;
}

.modal-header {
    border-bottom: 1px solid var(--border-primary);
    color: var(--text-primary);
}

.modal-body {
    color: var(--text-secondary);
}

/* Mercedes Modal Specific Styling */
.mercedes-modal {
    background: var(--gradient-modal);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    box-shadow: var(--shadow-modal);
    backdrop-filter: var(--glass-blur);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 115, 206, 0.2) transparent;
    cursor: default;
}

.mercedes-modal.show {
    transform: scale(1);
    opacity: 1;
}

.mercedes-modal::-webkit-scrollbar {
    width: 8px;
}

.mercedes-modal::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 4px;
}

.mercedes-modal::-webkit-scrollbar-thumb {
    background: rgba(0, 115, 206, 0.2);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.mercedes-modal::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 115, 206, 0.4);
}

.dark .mercedes-modal::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
}

.dark .mercedes-modal::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}

/* Modal Animation Classes */
.modal-enter {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
}

.modal-enter-active {
    opacity: 1;
    transform: scale(1) translateY(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-exit {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.modal-exit-active {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modal Overlay Click-to-Close Functionality */
.modal-overlay[data-closable="true"] {
    cursor: pointer;
}

.modal-overlay[data-closable="true"] .mercedes-modal {
    cursor: default;
}

/* === FORM ELEMENTS (Optimiert für beide Modi) === */
.form-input, input:not([type="checkbox"]):not([type="radio"]), textarea, select {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    color: var(--text-primary);
    padding: 0.875rem 1rem;
    border-radius: 12px;
    margin: 0.375rem 0;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
    font-family: inherit;
}

.form-input:hover, input:not([type="checkbox"]):not([type="radio"]):hover, textarea:hover, select:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.form-input:focus, input:not([type="checkbox"]):not([type="radio"]):focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--bg-input-focus);
    box-shadow: var(--focus-ring);
    transform: translateY(-1px);
}

.form-input::placeholder, input::placeholder, textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* Dark Mode Input Optimierungen */
.dark .form-input, .dark input:not([type="checkbox"]):not([type="radio"]), .dark textarea, .dark select {
    background: var(--bg-input);
    border-color: var(--border-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.dark .form-input:hover, .dark input:not([type="checkbox"]):not([type="radio"]):hover, .dark textarea:hover, .dark select:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.dark .form-input:focus, .dark input:not([type="checkbox"]):not([type="radio"]):focus, .dark textarea:focus, .dark select:focus {
    border-color: var(--border-focus);
    background: var(--bg-input-focus);
    box-shadow: var(--focus-ring);
}

.dark .form-input::placeholder, .dark input::placeholder, .dark textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.8;
}

/* Form Labels */
.form-label, label {
    display: block; font-size: 0.875rem; font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    margin-top: 1rem;
    line-height: 1.4;
}

.form-label.required::after, label.required::after {
    content: "*";
    color: var(--text-error);
    margin-left: 0.25rem;
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

/* Form Errors */
.form-error {
    color: var(--text-error);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.form-input.error, input.error, textarea.error, select.error {
    border-color: var(--border-error);
    background: rgba(239, 68, 68, 0.05);
}

.dark .form-input.error, .dark input.error, .dark textarea.error, .dark select.error {
    border-color: var(--border-error);
    background: rgba(239, 68, 68, 0.1);
}

/* Form Success */
.form-input.success, input.success, textarea.success, select.success {
    border-color: var(--border-success);
    background: rgba(16, 185, 129, 0.05);
}

.dark .form-input.success, .dark input.success, .dark textarea.success, .dark select.success {
    border-color: var(--border-success);
    background: rgba(16, 185, 129, 0.1);
}

/* Checkbox und Radio Buttons */
input[type="checkbox"], input[type="radio"] {
    width: 1.125rem;
    height: 1.125rem;
    margin: 0 0.5rem 0 0;
    accent-color: var(--mb-primary);
    cursor: pointer;
}

.dark input[type="checkbox"], .dark input[type="radio"] {
    accent-color: var(--text-accent);
}

/* File Inputs */
input[type="file"] {
    padding: 0.5rem;
    border: 2px dashed var(--border-secondary);
    background: var(--bg-tertiary);
    cursor: pointer;
}

input[type="file"]:hover {
    border-color: var(--border-primary);
    background: var(--bg-secondary);
}

.dark input[type="file"] {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
}

.dark input[type="file"]:hover {
    border-color: var(--border-primary);
    background: var(--bg-secondary);
}

/* Textareas */
textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.5;
}

/* Select Dropdowns */
select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.dark select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%94a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
}

/* === NAVIGATION (Optimiert für beide Modi) === */
.navbar-sticky {
    background: var(--gradient-navbar);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
}

.dark .navbar-sticky {
    background: var(--gradient-navbar);
    border-bottom: 1px solid var(--border-primary);
    box-shadow: var(--shadow-md);
}

.nav-item {
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-item:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.nav-item.active, .nav-active {
    background: var(--active-bg);
    color: var(--text-accent);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.dark .nav-item {
    color: var(--text-secondary);
}

.dark .nav-item:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.dark .nav-item.active, .dark .nav-active {
    background: var(--active-bg);
    color: var(--text-accent);
}

/* Mobile Navigation */
.mobile-menu {
    background: var(--bg-modal);
    border-right: 1px solid var(--border-primary);
    box-shadow: var(--shadow-xl);
}

.dark .mobile-menu {
    background: var(--bg-modal);
    border-right: 1px solid var(--border-primary);
}

/* User Dropdown */
#user-dropdown, #notificationDropdown {
    background: var(--bg-dropdown);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.dark #user-dropdown, .dark #notificationDropdown {
    background: var(--bg-dropdown);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-xl);
}

/* Breadcrumbs */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.breadcrumb-item {
    color: var(--text-tertiary);
    text-decoration: none;
}

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

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

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

/* === ALERTS === */
.alert {
    border: 1px solid var(--border-primary);
    background: var(--bg-card);
    border-color: var(--border-primary);
    border-radius: 16px !important;
    padding: 1.25rem;
    margin: 1rem 0;
}

.alert-info {
    background: rgba(0, 115, 206, 0.1);
    border-color: var(--mb-primary);
    color: var(--mb-primary);
}

.dark .alert-info {
    background: rgba(0, 115, 206, 0.2);
    color: var(--mb-white);
}

.alert-success {
    background: rgba(5, 150, 105, 0.1);
    border-color: var(--text-success);
    color: var(--text-success);
}

.alert-warning {
    background: rgba(217, 119, 6, 0.1);
    border-color: var(--text-warning);
    color: var(--text-warning);
}

.alert-error {
    background: rgba(220, 38, 38, 0.1);
    border-color: var(--text-error);
    color: var(--text-error);
}

/* === TABLES === */
.table {
    width: 100%; border-collapse: collapse;
    border-radius: 16px !important;
    overflow: hidden;
    margin: 1rem 0;
}

.table th {
    text-align: left; font-size: 0.875rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-bottom: 1px solid var(--border-primary);
    padding: 1rem 1.5rem;
}

.table td {
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-primary);
    padding: 1rem 1.5rem;
}

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

/* === TOOLTIPS === */
.tooltip {
    position: absolute; z-index: 50; font-size: 0.875rem; box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    background: var(--bg-modal);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    backdrop-filter: var(--glass-blur);
    border-radius: 12px !important;
    padding: 0.75rem 1rem;
    margin: 0.25rem;
}

/* === BADGES & STATUS === */
.badge {
    display: inline-flex; align-items: center; font-size: 0.75rem; font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 16px !important;
    padding: 0.5rem 0.75rem;
    margin: 0.25rem;
}

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

.badge-success {
    background: var(--text-success);
    color: var(--mb-white);
}

.badge-warning {
    background: var(--text-warning);
    color: var(--mb-white);
}

.badge-error {
    background: var(--text-error);
    color: var(--mb-white);
}

/* === LOADING STATES === */
.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    background: var(--bg-tertiary);
}

.spinner {
    animation: spin 1s linear infinite; border-radius: 9999px;
    border: 2px solid var(--border-primary);
    border-top-color: var(--text-accent);
}

/* === RESPONSIVE UTILITIES === */
@media (max-width: 768px) {
    .modal {
        margin: 1rem;
        max-width: calc(100% - 2rem);
        border-radius: 16px !important;
    }
    
    .card {
        border-radius: 16px !important;
        margin: 0.5rem;
        padding: 1rem;
    }
    
    .btn {
        font-size: 0.75rem;
        padding: 0.5rem 1rem;
        margin: 0.125rem;
    }
    
    .form-input {
        padding: 0.75rem 1rem;
        margin: 0.25rem 0;
    }
    
    .nav-item {
        padding: 0.5rem 0.75rem;
        margin: 0.125rem;
    }
}

/* === ACCESSIBILITY IMPROVEMENTS === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* === HIGH CONTRAST MODE === */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #000000;
        --text-primary: #000000;
    }
    
    .dark {
        --border-primary: #ffffff;
        --text-primary: #ffffff;
    }
}

/* === PRINT STYLES === */
@media print {
    .modal-overlay,
    .tooltip,
    .btn {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000000;
    }
}

/* === LEGACY COMPATIBILITY === */
.glass-modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    background: var(--bg-modal);
    border: 1px solid var(--border-primary);
    border-radius: 1rem;
    box-shadow: var(--shadow-card);
}

.mb-dashboard-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
}

.btn-professional {
    background: linear-gradient(135deg, var(--mb-primary), var(--mb-primary-dark));
    color: var(--text-on-primary);
    border: 1px solid var(--mb-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.input-professional {
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

/* === CSS CUSTOM PROPERTIES FALLBACKS === */
.no-css-vars .btn-primary {
    background: #0073ce;
    color: #ffffff;
}

.no-css-vars .dark .btn-primary {
    background: #ffffff;
    color: #000000;
}

/* === OPTIMIZED THEME TRANSITION === */
html {
    transition: background-color 0.3s ease;
}

body {
    transition: color 0.3s ease, background-color 0.3s ease;
}

/* === ENHANCED DARK MODE CONTRAST === */
.dark .btn-primary {
    background: var(--gradient-button);
    color: var(--text-on-primary);
    box-shadow: 0 4px 14px 0 rgba(255, 255, 255, 0.1);
}

.dark .btn-primary:hover {
    background: #f5f5f5;
    box-shadow: 0 6px 20px 0 rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

/* === TABLE OPTIMIERUNGEN === */
.table {
    width: 100%; border-collapse: collapse;
    border-radius: 12px !important;
    overflow: hidden;
    margin: 1rem 0;
    background: var(--bg-card);
    box-shadow: var(--shadow-card);
}

.table th {
    text-align: left; font-size: 0.875rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-bottom: 1px solid var(--border-primary);
    padding: 1rem 1.5rem;
}

.table td {
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-primary);
    padding: 1rem 1.5rem;
}

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

.dark .table {
    background: var(--bg-card);
}

.dark .table th {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
}

.dark .table td {
    color: var(--text-secondary);
}

/* === TOOLTIPS === */
.tooltip {
    position: absolute; z-index: 50; font-size: 0.875rem;
    background: var(--bg-modal);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    backdrop-filter: blur(12px);
    border-radius: 8px !important;
    padding: 0.5rem 0.75rem;
    margin: 0.25rem;
    box-shadow: var(--shadow-lg);
}

/* === BADGES & STATUS === */
.badge {
    display: inline-flex; align-items: center; font-size: 0.75rem; font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 12px !important;
    padding: 0.375rem 0.75rem;
    margin: 0.125rem;
    border: 1px solid var(--border-primary);
}

.badge-primary { background: var(--mb-primary); color: var(--mb-white); border-color: transparent; }
.badge-success { background: var(--text-success); color: var(--mb-white); border-color: transparent; }
.badge-warning { background: var(--text-warning); color: var(--mb-white); border-color: transparent; }
.badge-error { background: var(--text-error); color: var(--mb-white); border-color: transparent; }

/* === RESPONSIVE OPTIMIERUNGEN === */
@media (max-width: 768px) {
    .modal, .mercedes-modal {
        margin: 0.5rem;
        max-width: calc(100% - 1rem);
        border-radius: 12px !important;
    }
    
    .card, .dashboard-card {
        border-radius: 12px !important;
        margin: 0.5rem;
        padding: 1rem;
    }
    
    .btn {
        font-size: 0.875rem;
        padding: 0.625rem 1rem;
        margin: 0.125rem;
        border-radius: 8px;
    }
    
    .form-input, input, textarea, select {
        padding: 0.75rem;
        margin: 0.25rem 0;
        border-radius: 8px;
        font-size: 16px; /* Verhindert Zoom auf iOS */
    }
    
    .nav-item {
        padding: 0.75rem;
        margin: 0.125rem;
        border-radius: 8px;
    }
    
    .navbar-sticky {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
}

/* === PERFORMANCE OPTIMIERUNGEN === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .glass, .glass-card {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }
}

/* === HIGH CONTRAST MODE === */
@media (prefers-contrast: high) {
    :root {
        --border-primary: #000000;
        --text-primary: #000000;
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
    
    .dark {
        --border-primary: #ffffff;
        --text-primary: #ffffff;
        --shadow-sm: 0 1px 3px rgba(255, 255, 255, 0.3);
        --shadow-md: 0 4px 6px rgba(255, 255, 255, 0.3);
    }
}

/* === PRINT STYLES === */
@media print {
    .modal-overlay, .tooltip, .btn, .navbar-sticky, .mobile-menu {
        display: none !important;
    }
    
    .card, .dashboard-card {
        box-shadow: none;
        border: 1px solid #000000;
        break-inside: avoid;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* === ENHANCED UTILITY CLASSES === */
.theme-transition {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.focus-visible:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

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

.text-ellipsis {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.transition-fast { transition: all 0.15s ease; }
.transition-normal { transition: all 0.2s ease; }
.transition-slow { transition: all 0.3s ease; }

/* === SCROLLBAR STYLING === */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: 4px;
    transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-primary);
}

.dark ::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

.dark ::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: var(--border-primary);
}

/* === LOADING STATES === */
.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.spinner {
    animation: spin 1s linear infinite; border-radius: 9999px;
    border: 2px solid var(--border-primary);
    border-top-color: var(--text-accent);
    width: 1.5rem;
    height: 1.5rem;
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* === STATUS INDICATORS === */
.status-online { color: var(--text-success); }
.status-offline { color: var(--text-error); }
.status-warning { color: var(--text-warning); }
.status-info { color: var(--text-accent); }

.status-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.5rem;
}

.status-dot.online { background: var(--text-success); }
.status-dot.offline { background: var(--text-error); }
.status-dot.warning { background: var(--text-warning); }
.status-dot.info { background: var(--text-accent); }

/* === HOVER EFFECTS === */
.hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.hover-scale {
    transition: transform 0.2s ease;
}

.hover-scale:hover {
    transform: scale(1.02);
}