/* Kundenkommunikations-Panel - iOS-inspiriertes Design */

/* CSS-Variablen für konsistente Farben und Abstände */
:root {
    /* Primärfarben */
    --primary-color: #007AFF;
    --primary-hover: #0056CC;
    --secondary-color: #5856D6;
    --secondary-hover: #4B4ACF;
    
    /* Grautöne */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Semantische Farben */
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --info-color: #3B82F6;
    
    /* Hintergrundfarben */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F1F3F4;
    
    /* Textfarben */
    --text-primary: #1D1D1F;
    --text-secondary: #86868B;
    --text-tertiary: #A1A1A6;
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    /* Abstände */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Typografie */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    
    /* Übergänge */
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.25s ease-out;
    --transition-slow: 0.35s ease-out;
}

/* Reset und Basis-Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    line-height: 1.6;
}

/* Typografie */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

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

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

/* Layout-Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm {
    max-width: 640px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-lg {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Grid-System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

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

/* Flexbox-Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

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

/* Karten-Design */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    background: var(--bg-secondary);
}

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

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    background: var(--bg-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    user-select: none;
    white-space: nowrap;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--secondary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

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

.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
    color: var(--text-primary);
}

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

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

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

/* Button-Größen */
.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 16px 32px;
    font-size: var(--font-size-lg);
}

/* Formulare */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

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

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

/* Navigation */
.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.8);
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.navbar-nav {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.navbar-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-link:hover,
.navbar-link.active {
    color: var(--primary-color);
    background: rgba(0, 122, 255, 0.1);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-primary);
    border-right: 1px solid var(--gray-200);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    overflow-y: auto;
    z-index: 50;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

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

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.sidebar-link:hover,
.sidebar-link.active {
    color: var(--primary-color);
    background: rgba(0, 122, 255, 0.1);
}

.main-content {
    margin-left: 280px;
    padding: var(--spacing-lg);
    min-height: 100vh;
}

/* Chat-Interface */
.chat-container {
    height: 600px;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.chat-header {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.chat-message {
    max-width: 70%;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    word-wrap: break-word;
    line-height: 1.5;
    text-align: left;
}

.chat-message.sent {
    align-self: flex-end;
    background: var(--primary-color);
    color: white;
    border-bottom-right-radius: var(--radius-sm);
}

.chat-message.received {
    align-self: flex-start;
    background: var(--gray-100);
    color: var(--text-primary);
    border-bottom-left-radius: var(--radius-sm);
}

.chat-message.admin {
    align-self: flex-start;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-bottom-left-radius: var(--radius-sm);
    border-left: 4px solid #4c63d2;
}

.chat-message.customer {
    align-self: flex-end;
    background: var(--gray-100);
    color: var(--text-primary);
    border-bottom-right-radius: var(--radius-sm);
    border-right: 4px solid var(--primary-color);
}

/* Message content styling */
.message-content {
    text-align: left;
    word-break: break-word;
    white-space: pre-wrap;
}

.message-sender {
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
    opacity: 0.9;
}

.message-time {
    font-size: var(--font-size-xs);
    opacity: 0.7;
    margin-top: var(--spacing-xs);
    text-align: left;
}

.chat-message.sent .message-time {
    text-align: left;
}

.chat-message.received .message-time {
    text-align: left;
}

/* Image messages */
.message-image {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: var(--spacing-xs) 0;
    cursor: pointer;
    transition: transform var(--transition-fast);
    /* Verbesserte Bildqualität für hochauflösende Displays */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: auto;
    /* Unterstützt Retina/High-DPI Displays */
    backface-visibility: hidden;
    transform: translateZ(0);
}

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

/* Message status indicators */
.message-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    opacity: 0.7;
    margin-top: var(--spacing-xs);
}

.status-icon {
    width: 12px;
    height: 12px;
}

/* Improved message bubbles for better readability */
.chat-message {
    position: relative;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-fast);
}

.chat-message:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Message actions (edit, delete) */
.message-actions {
    position: absolute;
    top: -10px;
    right: 10px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    padding: var(--spacing-xs);
    display: none;
    gap: var(--spacing-xs);
}

.chat-message:hover .message-actions {
    display: flex;
}

.message-action-btn {
    background: none;
    border: none;
    padding: 4px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.message-action-btn:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

/* Alerts */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: #065F46;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning-color);
    color: #92400E;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--error-color);
    color: #991B1B;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--info-color);
    color: #1E40AF;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary-color);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.badge-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

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

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-error { color: var(--error-color); }

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

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Responsive Design */

/* Desktop large */
@media (max-width: 1200px) {
    .container-lg {
        max-width: 1000px;
    }
    
    .grid-cols-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet landscape */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sidebar {
        width: 220px;
    }
    
    .main-content {
        margin-left: 220px;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .chat-message {
        max-width: 80%;
    }
}

/* Tablet portrait */
@media (max-width: 768px) {
    /* WICHTIGER MOBILE RESET */
    * {
        -webkit-overflow-scrolling: touch;
    }
    
    html, body {
        overflow-x: hidden;
        width: 100%;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .container-sm {
        padding: 0 var(--spacing-md);
    }
    
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        box-shadow: var(--shadow-xl);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: var(--spacing-md);
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .chat-message {
        max-width: 85%;
    }
    
    /* ===== MOBILE NAVIGATION STYLES ===== */
    .navbar-content {
        justify-content: space-between;
        width: 100%;
    }

    .mobile-menu-toggle {
        display: block;
        z-index: 1002;
    }

    .mobile-menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity var(--transition-normal);
    }

    .mobile-menu-overlay.active {
        display: block;
        opacity: 1;
    }

    .navbar-nav {
        flex-direction: column;
        align-items: flex-start;
        background: var(--bg-primary);
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        padding: var(--spacing-xl) var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        z-index: 1001;
        transition: left var(--transition-normal);
        overflow-y: auto;
    }

    .navbar-nav.mobile-active {
        left: 0;
    }
    
    .navbar-link {
        width: 100%;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--gray-200);
        border-radius: 0;
    }
    
    .navbar-link:last-child {
        border-bottom: none;
    }

    .navbar-dropdown {
        width: 100%;
    }

    .navbar-dropdown .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none; 
        padding-left: var(--spacing-md);
        background: transparent;
    }

    .navbar-dropdown.show .dropdown-menu {
        display: block; 
    }
    
    .navbar-dropdown.show .dropdown-toggle::after {
        transform: rotate(180deg);
    }

    /* Admin Chat-Input Anpassungen */
    .chat-layout {
        grid-template-columns: 1fr; /* Volle Breite für die Chat-Ansicht */
    }

    .customer-sidebar {
        display: none; /* Seitenleiste standardmäßig ausblenden */
    }
    
    /* Wenn ein Kunde ausgewählt ist, die Seitenleiste anzeigen */
    .chat-layout.customer-selected .customer-sidebar {
        display: block;
    }

    .input-row {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .input-actions {
        justify-content: flex-end;
        gap: var(--spacing-sm);
    }

    /* VERBESSERTE MOBILE CHAT-BUTTON GRÖSSSEN */
    .input-actions .btn {
        height: 40px !important;
        min-height: 40px !important;
        padding: var(--spacing-xs) var(--spacing-sm) !important;
        flex-grow: 0 !important;
        min-width: 40px !important;
        font-size: var(--font-size-sm) !important;
        border-radius: var(--radius-md) !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    
    .input-actions .btn-primary,
    #sendButton {
        min-width: 70px !important;
        padding: var(--spacing-xs) var(--spacing-md) !important;
        font-weight: 600 !important;
    }

    /* Bild Upload Button optimiert */
    .input-actions label.btn {
        background: var(--gray-100) !important;
        border: 1px solid var(--gray-300) !important;
        color: var(--text-primary) !important;
        cursor: pointer !important;
        transition: all var(--transition-fast) !important;
        font-size: var(--font-size-base) !important;
    }

    .input-actions label.btn:hover,
    .input-actions label.btn:active {
        background: var(--gray-200) !important;
        border-color: var(--gray-400) !important;
        transform: scale(0.98) !important;
    }

    /* Chat Input optimiert */
    .chat-input {
        min-height: 40px !important;
        max-height: 120px !important;
        padding: var(--spacing-sm) var(--spacing-md) !important;
        font-size: 16px !important; /* iOS Zoom verhindern */
        border-radius: var(--radius-md) !important;
        border: 1px solid var(--gray-300) !important;
    }

    /* Bildvorschau Mobile optimiert */
    .image-preview {
        margin-top: var(--spacing-sm) !important;
        padding: var(--spacing-sm) !important;
        background: var(--gray-50) !important;
        border-radius: var(--radius-md) !important;
        border: 1px solid var(--gray-200) !important;
        display: flex !important;
        align-items: center !important;
        gap: var(--spacing-sm) !important;
    }

    .image-preview img {
        max-width: 120px !important;
        max-height: 120px !important;
        border-radius: var(--radius-sm) !important;
        object-fit: cover !important;
        /* Verbesserte Bildqualität */
        image-rendering: -webkit-optimize-contrast !important;
        image-rendering: auto !important;
    }

    .image-preview .btn {
        min-width: 30px !important;
        min-height: 30px !important;
        padding: var(--spacing-xs) !important;
        font-size: var(--font-size-sm) !important;
    }

    /* Force override für Chat-Buttons – verhindert zu breite Buttons bei abweichenden Inline-Styles */
    .input-actions .btn,
    .chat-input .btn {
        flex-grow: 0 !important;
    }
}

/* Mobile (Smartphone landscape) */
@media (max-width: 640px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .container-sm {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-section {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
    }
    
    .login-section {
        padding: var(--spacing-md) 0;
    }
    
    .tab-button {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .form-input,
    .form-textarea {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-base);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-base);
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: var(--spacing-md);
    }
    
    .chat-container {
        height: 50vh;
    }
    
    .sidebar {
        width: 260px;
    }
}

/* Mobile (Smartphone portrait) */
@media (max-width: 480px) {
    .container,
    .container-sm {
        padding: 0 var(--spacing-sm);
    }
    
    /* Typography für sehr kleine Bildschirme */
    .hero-title {
        font-size: var(--font-size-lg);
        line-height: 1.3;
        margin-bottom: var(--spacing-xs);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-section {
        padding: var(--spacing-md) 0;
    }
    
    .login-section {
        padding: var(--spacing-sm) 0;
    }
    
    /* Tab-Navigation für sehr kleine Bildschirme */
    .tab-buttons {
        flex-direction: column;
        gap: 0;
    }
    
    .tab-button {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
        text-align: center;
        border-bottom: 1px solid var(--gray-200);
    }
    
    .tab-button:last-child {
        border-bottom: none;
    }
    
    .tab-button.active {
        font-weight: 600;
    }
    
    /* Formulare für sehr kleine Bildschirme */
    .form-input,
    .form-textarea {
        padding: var(--spacing-md);
        font-size: 16px; /* Verhindert Zoom auf iOS */
        border-radius: var(--radius-md);
        width: 100%;
        -webkit-appearance: none; /* iOS-Styling entfernen */
    }
    
    .form-textarea {
        min-height: 100px;
        resize: none; /* Resize auf mobilen Geräten deaktivieren */
    }
    
    .form-label {
        font-size: var(--font-size-sm);
        font-weight: 600;
        margin-bottom: var(--spacing-xs);
    }
    
    /* Buttons für sehr kleine Bildschirme */
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 16px; /* Verhindert Zoom auf iOS */
        min-height: 44px; /* iOS Minimum Touch Target */
        border-radius: var(--radius-md);
        width: 100%;
        -webkit-appearance: none; /* iOS-Styling entfernen */
        cursor: pointer;
    }
    
    /* Karten für sehr kleine Bildschirme */
    .card {
        margin-bottom: var(--spacing-md);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
    }
    
    .card-header {
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--gray-200);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .card-footer {
        padding: var(--spacing-md);
        border-top: 1px solid var(--gray-200);
    }
    
    /* Chat für sehr kleine Bildschirme */
    .chat-container {
        height: 40vh;
        margin: var(--spacing-sm) 0;
        border-radius: var(--radius-md);
    }
    
    .chat-header {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .chat-input-container {
        padding: var(--spacing-sm);
    }
    
    .chat-messages {
        padding: var(--spacing-sm);
    }
    
    .chat-message {
        max-width: 90%;
        margin-bottom: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .message-content {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    /* Alerts für sehr kleine Bildschirme */
    .alert {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        margin-bottom: var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .alert-icon {
        font-size: var(--font-size-base);
    }
    
    /* Sidebar für sehr kleine Bildschirme */
    .sidebar {
        width: 100%;
        max-width: 280px;
    }
    
    /* Footer für sehr kleine Bildschirme */
    .footer {
        padding: var(--spacing-md) 0;
        font-size: var(--font-size-sm);
    }
    
    /* Admin-Link für sehr kleine Bildschirme */
    .admin-link {
        bottom: var(--spacing-sm);
        right: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    /* Text-Utilities für mobile */
    .text-xs { font-size: 11px; }
    .text-sm { font-size: 13px; }
    
    /* Spacing für mobile reduzieren */
    .mt-lg { margin-top: var(--spacing-md); }
    .mb-lg { margin-bottom: var(--spacing-md); }
    .p-lg { padding: var(--spacing-md); }
}

/* Sehr kleine Bildschirme (alte Smartphones) */
@media (max-width: 360px) {
    .hero-title {
        font-size: var(--font-size-base);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xs);
    }
    
    .tab-button,
    .btn,
    .form-input,
    .form-textarea {
        font-size: 14px;
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: var(--spacing-sm);
    }
    
    .chat-container {
        height: 35vh;
    }
    
    .sidebar {
        width: 100%;
        max-width: 260px;
    }
}

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

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

.slide-in {
    animation: slideIn var(--transition-normal) ease-out;
}

/* Loading-Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dark Mode Support - Verbessert */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1F2937;
        --bg-secondary: #111827;
        --bg-tertiary: #374151;
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB;
        --text-tertiary: #9CA3AF;
        --gray-50: #374151;
        --gray-100: #4B5563;
        --gray-200: #6B7280;
        --gray-300: #9CA3AF;
        --gray-400: #D1D5DB;
        --gray-500: #E5E7EB;
        --gray-600: #F3F4F6;
        --gray-700: #F9FAFB;
        --gray-800: #FFFFFF;
        --gray-900: #FFFFFF;
    }
    
    body {
        background: var(--bg-secondary);
        color: var(--text-primary);
    }
    
    /* Formulare im Dark Mode */
    .form-group input,
    .form-group select,
    .form-group textarea,
    .form-input,
    .form-textarea,
    .form-select,
    .chat-input {
        background: var(--bg-primary) !important;
        color: var(--text-primary) !important;
        border-color: var(--gray-300) !important;
    }
    
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus,
    .form-input:focus,
    .form-textarea:focus,
    .form-select:focus,
    .chat-input:focus {
        background: var(--bg-primary) !important;
        color: var(--text-primary) !important;
        border-color: var(--primary-color) !important;
        box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2) !important;
    }
    
    /* Placeholder Text */
    input::placeholder,
    textarea::placeholder {
        color: var(--text-tertiary) !important;
        opacity: 0.7;
    }
    
    /* Labels */
    .form-group label,
    .form-label {
        color: var(--text-primary) !important;
    }
    
    /* Buttons */
    .btn-outline {
        background: transparent !important;
        color: var(--primary-color) !important;
        border-color: var(--primary-color) !important;
    }
    
    .btn-outline:hover:not(:disabled) {
        background: var(--primary-color) !important;
        color: white !important;
    }
    
    .btn-ghost {
        background: transparent !important;
        color: var(--text-secondary) !important;
    }
    
    .btn-ghost:hover:not(:disabled) {
        background: var(--bg-primary) !important;
        color: var(--text-primary) !important;
    }
    
    /* Alerts */
    .alert-success {
        background: rgba(16, 185, 129, 0.15) !important;
        color: #34D399 !important;
        border-color: #059669 !important;
    }
    
    .alert-warning {
        background: rgba(245, 158, 11, 0.15) !important;
        color: #FBBF24 !important;
        border-color: #D97706 !important;
    }
    
    .alert-error {
        background: rgba(239, 68, 68, 0.15) !important;
        color: #F87171 !important;
        border-color: #DC2626 !important;
    }
    
    .alert-info {
        background: rgba(59, 130, 246, 0.15) !important;
        color: #60A5FA !important;
        border-color: #2563EB !important;
    }
    
    /* Chat Messages */
    .chat-message.received {
        background: var(--bg-primary) !important;
        color: var(--text-primary) !important;
        border-color: var(--gray-300) !important;
    }
    
    .chat-message.customer {
        background: var(--bg-primary) !important;
        color: var(--text-primary) !important;
        border-color: var(--primary-color) !important;
    }
    
    /* Navigation */
    .navbar {
        background: var(--bg-primary) !important;
        border-bottom-color: var(--gray-300) !important;
        backdrop-filter: blur(20px);
        background: rgba(31, 41, 55, 0.9) !important;
    }
    
    .navbar-brand {
        color: var(--text-primary) !important;
    }
    
    .navbar-link {
        color: var(--text-secondary) !important;
    }
    
    .navbar-link:hover,
    .navbar-link.active {
        color: var(--primary-color) !important;
        background: rgba(0, 122, 255, 0.15) !important;
    }
    
    /* Sidebar */
    .sidebar {
        background: var(--bg-primary) !important;
        border-right-color: var(--gray-300) !important;
    }
    
    .sidebar-link {
        color: var(--text-secondary) !important;
    }
    
    .sidebar-link:hover,
    .sidebar-link.active {
        color: var(--primary-color) !important;
        background: rgba(0, 122, 255, 0.15) !important;
    }
    
    /* Cards */
    .card {
        background: var(--bg-primary) !important;
        border-color: var(--gray-300) !important;
    }
    
    .card-header,
    .card-footer {
        background: var(--bg-secondary) !important;
        border-color: var(--gray-300) !important;
    }
    
    /* Dropdown Menus - Verbessert */
    .dropdown-menu {
        background: var(--bg-primary) !important;
        border: 1px solid var(--gray-300) !important;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4) !important;
        backdrop-filter: blur(10px);
    }
    
    .dropdown-item {
        color: var(--text-secondary) !important;
    }
    
    .dropdown-item:hover {
        background: var(--bg-secondary) !important;
        color: var(--text-primary) !important;
    }
    
    .notification-toggle:hover {
        background: var(--bg-secondary) !important;
    }
    
    /* Tables */
    table {
        background: var(--bg-primary) !important;
        color: var(--text-primary) !important;
    }
    
    th {
        background: var(--bg-secondary) !important;
        color: var(--text-primary) !important;
        border-color: var(--gray-300) !important;
    }
    
    td {
        border-color: var(--gray-300) !important;
        color: var(--text-secondary) !important;
    }
    
    tr:hover {
        background: var(--bg-secondary) !important;
    }
    
    /* Settings sections */
    .settings-section {
        background: var(--bg-primary) !important;
        border-color: var(--gray-300) !important;
    }
    
    .section-title {
        color: var(--text-primary) !important;
    }
    
    /* Stat cards */
    .stat-card {
        background: var(--bg-primary) !important;
        border-color: var(--gray-300) !important;
    }
    
    .stat-number {
        color: var(--primary-color) !important;
    }
    
    .stat-label {
        color: var(--text-secondary) !important;
    }
    
    /* Chat specific */
    .chat-container {
        background: var(--bg-primary) !important;
    }
    
    .chat-header {
        background: var(--bg-secondary) !important;
        border-color: var(--gray-300) !important;
    }
    
    .chat-messages {
        background: var(--bg-secondary) !important;
    }
    
    .chat-input-container {
        background: var(--bg-primary) !important;
        border-color: var(--gray-300) !important;
    }
    
    .message-sender {
        color: var(--text-secondary) !important;
    }
    
    .message-time {
        color: var(--text-tertiary) !important;
    }
    
    /* Message actions */
    .message-actions {
        background: var(--bg-primary) !important;
        border-color: var(--gray-300) !important;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
    }
    
    .message-action-btn {
        color: var(--text-secondary) !important;
    }
    
    .message-action-btn:hover {
        background: var(--bg-secondary) !important;
        color: var(--text-primary) !important;
    }
    
    /* Switches */
    .slider {
        background-color: var(--gray-300) !important;
    }
    
    .slider:before {
        background-color: white !important;
    }
    
    input:checked + .slider {
        background-color: var(--primary-color) !important;
    }
}

.chat-input-container {
    padding: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
    background: var(--bg-secondary);
}

.chat-input {
    display: flex;
    gap: var(--spacing-sm);
}

.chat-input input {
    flex: 1;
}

/* ===== ZUSÄTZLICHE MOBILE OPTIMIERUNGEN ===== */

/* Touch-Optimierungen für alle Geräte */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Touch-Target-Größen für bessere Bedienbarkeit */
.btn,
.form-input,
.form-textarea,
.tab-button,
.navbar-link,
.sidebar-link {
    min-height: 44px; /* Apple's empfohlene Mindestgröße für Touch-Targets */
    touch-action: manipulation; /* Verhindert Zoom bei Double-Tap */
}

/* iOS Safari spezifische Optimierungen */
input[type="text"],
input[type="password"],
input[type="email"],
textarea {
    -webkit-appearance: none;
    -webkit-border-radius: 0;
    border-radius: var(--radius-md);
}

/* Verhindert Zoom bei Fokus auf Input-Felder in iOS */
@media screen and (max-width: 768px) {
    input[type="text"],
    input[type="password"],
    input[type="email"],
    textarea {
        font-size: 16px !important; /* iOS zoomt nicht, wenn font-size >= 16px */
    }
}

/* Scroll-Verhalten optimieren */
html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch; /* iOS Momentum Scrolling */
}

/* Container mit sicherem Bereich für moderne Smartphones */
@supports (padding: max(0px)) {
    .container,
    .container-sm {
        padding-left: max(var(--spacing-sm), env(safe-area-inset-left));
        padding-right: max(var(--spacing-sm), env(safe-area-inset-right));
    }
    
    .hero-section,
    .login-section,
    .footer {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
}

/* Hamburger-Menu für mobile Navigation */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    z-index: 1001;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    font-size: var(--font-size-lg);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background: var(--primary-hover);
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block !important;
    }
    
    /* Wichtige Mobile-Überschreibungen */
    body {
        overflow-x: hidden !important;
    }
    
    .navbar {
        position: sticky !important;
        top: 0 !important;
        z-index: 1000 !important;
        background: var(--bg-primary) !important;
        border-bottom: 1px solid var(--gray-200) !important;
    }
    
    .navbar-content {
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
    }
    
    .navbar-brand {
        flex: 1 !important;
        text-align: center !important;
    }
}

/* Overlay für Mobile-Menu */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Verbesserte Scroll-Performance */
.chat-messages,
.sidebar,
.main-content {
    transform: translateZ(0); /* Hardware-Beschleunigung aktivieren */
    -webkit-overflow-scrolling: touch;
}

/* Verbesserte Touch-Gestures für Chat-Nachrichten */
.chat-message {
    touch-action: pan-y; /* Erlaubt nur vertikales Scrollen */
}

/* Optimierte Tab-Navigation für Touch */
.tab-button {
    position: relative;
    overflow: hidden;
}

.tab-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.tab-button:active::before {
    opacity: 0.1;
}

/* Verbesserte Form-Validierung für Mobile */
.form-input:invalid,
.form-textarea:invalid {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input:valid,
.form-textarea:valid {
    border-color: var(--success-color);
}

/* Loading-States für bessere UX */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Optimierte Alerts für Mobile */
@media (max-width: 480px) {
    .alert {
        position: sticky;
        top: 0;
        z-index: 100;
        margin: 0 0 var(--spacing-md) 0;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
    }
}

/* Keyboard-Navigation Verbesserungen */
.btn:focus-visible,
.form-input:focus-visible,
.form-textarea:focus-visible,
.tab-button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2);
}

/* Reduce Motion für Benutzer mit Bewegungsempfindlichkeit */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn,
    .form-input,
    .form-textarea,
    .card {
        border-width: 2px;
        border-style: solid;
    }
    
    .btn-primary {
        border-color: var(--primary-color);
    }
    
    .form-input,
    .form-textarea {
        border-color: var(--text-primary);
    }
}

/* Print-Styles */
@media print {
    .sidebar,
    .navbar,
    .mobile-menu-toggle,
    .footer,
    .chat-input-container {
        display: none;
    }

    .main-content {
        margin-left: 0;
        padding: 0;
        width: 100%;
    }

    .hero-section {
        background: none;
        color: black;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* ===== MOBILE OPTIMIERUNGEN FÜR LOGIN-SEITE (aus index.php) ===== */

/* Touch-optimierte Tab-Buttons */
@media (max-width: 768px) {
    /* WICHTIGER MOBILE RESET */
    * {
        -webkit-overflow-scrolling: touch;
    }
    
    html, body {
        overflow-x: hidden;
        width: 100%;
    }
    
    .tab-buttons {
        background: var(--gray-100);
        border-radius: var(--radius-lg);
        padding: var(--spacing-xs);
        margin-bottom: var(--spacing-lg);
        display: flex;
    }
    
    .tab-button {
        border-radius: var(--radius-md);
        font-weight: 500;
        transition: all var(--transition-fast);
    }
    
    .tab-button.active {
        background: var(--bg-primary);
        color: var(--primary-color);
        box-shadow: var(--shadow-sm);
        font-weight: 600;
    }
    
    .hero-section {
        text-align: center;
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .hero-title {
        line-height: 1.2;
    }
    
    /* Formulare für Touch optimieren */
    .form-input,
    .form-textarea {
        -webkit-appearance: none;
        border-radius: var(--radius-md);
        font-size: 16px; /* Verhindert Zoom in iOS */
        transition: all var(--transition-fast);
    }
    
    .form-input:focus,
    .form-textarea:focus {
        transform: scale(1.02);
        box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
    }
    
    /* Button-Hover-Effekte für Touch */
    .btn:active {
        transform: scale(0.98);
    }
    
    /* Alert-Optimierungen */
    .alert {
        border-radius: var(--radius-md);
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .login-section {
        padding: var(--spacing-sm) 0;
    }
    
    .container-sm {
        padding: 0 var(--spacing-sm);
    }
    
    .card {
        border-radius: var(--radius-lg);
        margin: 0 var(--spacing-xs);
    }
    
    .card-header,
    .card-body {
        padding: var(--spacing-md);
    }
    
    /* Tab-Buttons für sehr kleine Bildschirme */
    .tab-buttons {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .tab-button {
        padding: var(--spacing-md);
        text-align: center;
        border-radius: var(--radius-md);
    }
    
    /* Admin-Link für mobile */
    .admin-link {
        position: fixed;
        bottom: var(--spacing-sm);
        right: var(--spacing-sm);
        font-size: var(--font-size-xs);
        opacity: 0.5;
    }

    /* EXTRA KLEINE CHAT-BUTTONS FÜR SEHR KLEINE BILDSCHIRME */
    .input-actions .btn {
        height: 36px !important;
        min-height: 36px !important;
        padding: var(--spacing-xs) !important;
        min-width: 36px !important;
        font-size: var(--font-size-xs) !important;
    }
    
    .input-actions .btn-primary,
    #sendButton {
        min-width: 60px !important;
        padding: var(--spacing-xs) var(--spacing-sm) !important;
    }

    .chat-input {
        min-height: 36px !important;
        padding: var(--spacing-xs) var(--spacing-sm) !important;
        font-size: 16px !important;
    }

    .image-preview {
        padding: var(--spacing-xs) !important;
        gap: var(--spacing-xs) !important;
    }

    .image-preview img {
        max-width: 50px !important;
        max-height: 50px !important;
    }

    .image-preview .btn {
        min-width: 24px !important;
        min-height: 24px !important;
        padding: 2px !important;
        font-size: 12px !important;
    }
}

/* ===== MOBILE NAVIGATION STYLES ===== */
@media (max-width: 768px) {
    /* WICHTIGER MOBILE RESET */
    * {
        -webkit-overflow-scrolling: touch;
    }
    
    html, body {
        overflow-x: hidden;
        width: 100%;
    }
    
    .alert {
        border-radius: var(--radius-md);
        margin-bottom: var(--spacing-md);
    }

    .navbar-content {
        justify-content: space-between;
        width: 100%;
    }

    .mobile-menu-toggle {
        display: block;
        z-index: 1002;
    }

    .mobile-menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity var(--transition-normal);
    }

    .mobile-menu-overlay.active {
        display: block;
        opacity: 1;
    }

    .navbar-nav {
        flex-direction: column;
        align-items: flex-start;
        background: var(--bg-primary);
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        padding: var(--spacing-xl) var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        z-index: 1001;
        transition: left var(--transition-normal);
        overflow-y: auto;
    }

    .navbar-nav.mobile-active {
        left: 0;
    }
    
    .navbar-link {
        width: 100%;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--gray-200);
        border-radius: 0;
    }
    
    .navbar-link:last-child {
        border-bottom: none;
    }

    .navbar-dropdown {
        width: 100%;
    }

    .navbar-dropdown .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none; 
        padding-left: var(--spacing-md);
        background: transparent;
    }

    .navbar-dropdown.show .dropdown-menu {
        display: block; 
    }
    
    .navbar-dropdown.show .dropdown-toggle::after {
        transform: rotate(180deg);
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .login-section {
        padding: var(--spacing-sm) 0;
    }
    
    .container-sm {
        padding: 0 var(--spacing-sm);
    }
    
    .card {
        border-radius: var(--radius-lg);
        margin: 0 var(--spacing-xs);
    }
    
    .card-header,
    .card-body {
        padding: var(--spacing-md);
    }
    
    /* Tab-Buttons für sehr kleine Bildschirme */
    .tab-buttons {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .tab-button {
        padding: var(--spacing-md);
        text-align: center;
        border-radius: var(--radius-md);
    }
    
    /* Admin-Link für mobile */
    .admin-link {
        position: fixed;
        bottom: var(--spacing-sm);
        right: var(--spacing-sm);
        font-size: var(--font-size-xs);
        opacity: 0.5;
    }
}