/* Tesla-inspired Design System for EMS - Rettungsdienstschule Management */

/* Design Tokens */
:root {
    /* EMS Brand Colors */
    --ems-primary: #dc2626;        /* Emergency Red */
    --ems-primary-dark: #b91c1c;   /* Darker Red */
    --ems-secondary: #0ea5e9;      /* Medical Blue */
    --ems-success: #22c55e;        /* Success Green */
    --ems-warning: #f59e0b;        /* Warning Orange */
    --ems-danger: #ef4444;         /* Danger Red */
    --ems-info: #3b82f6;           /* Info Blue */
    
    /* Neutral Colors */
    --ems-dark: #1a1a1a;
    --ems-gray-900: #111827;
    --ems-gray-800: #1f2937;
    --ems-gray-700: #374151;
    --ems-gray-600: #4b5563;
    --ems-gray-500: #6b7280;
    --ems-gray-400: #9ca3af;
    --ems-gray-300: #d1d5db;
    --ems-gray-200: #e5e7eb;
    --ems-gray-100: #f3f4f6;
    --ems-gray-50: #f9fafb;
    --ems-white: #ffffff;
    
    /* Effects */
    --ems-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --ems-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --ems-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --ems-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --ems-shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.18);
    
    /* Border Radius */
    --ems-radius-sm: 0.375rem;
    --ems-radius: 0.5rem;
    --ems-radius-lg: 0.75rem;
    --ems-radius-xl: 1rem;
    --ems-radius-full: 9999px;
    
    /* Transitions */
    --ems-transition: all 0.3s ease;
    --ems-transition-fast: all 0.15s ease;
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--ems-gray-900);
    background-color: var(--ems-gray-50);
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--ems-gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

/* Cards */
.card {
    background: var(--ems-white);
    border-radius: var(--ems-radius-lg);
    box-shadow: var(--ems-shadow);
    overflow: hidden;
    transition: var(--ems-transition);
}

.card:hover {
    box-shadow: var(--ems-shadow-md);
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--ems-gray-200);
    background-color: var(--ems-gray-50);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ems-gray-900);
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--ems-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--ems-transition-fast);
    text-decoration: none;
}

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

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

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* Button Variants */
.btn-primary {
    background-color: var(--ems-primary);
    color: var(--ems-white);
    border-color: var(--ems-primary);
}

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

.btn-secondary {
    background-color: var(--ems-gray-200);
    color: var(--ems-gray-700);
    border-color: var(--ems-gray-300);
}

.btn-secondary:hover {
    background-color: var(--ems-gray-300);
    border-color: var(--ems-gray-400);
}

.btn-outline {
    background-color: transparent;
    color: var(--ems-gray-700);
    border-color: var(--ems-gray-300);
}

.btn-outline:hover {
    background-color: var(--ems-gray-50);
    border-color: var(--ems-gray-400);
}

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

.btn-danger {
    background-color: var(--ems-danger);
    color: var(--ems-white);
    border-color: var(--ems-danger);
}

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

.btn-info {
    background-color: var(--ems-info);
    color: var(--ems-white);
    border-color: var(--ems-info);
}

/* Button Sizes */
.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ems-gray-700);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--ems-gray-900);
    background-color: var(--ems-white);
    border: 1px solid var(--ems-gray-300);
    border-radius: var(--ems-radius);
    transition: var(--ems-transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--ems-primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--ems-gray-400);
}

.form-select {
    padding-right: 2.5rem;
    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 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    appearance: none;
}

.form-checkbox {
    width: 1rem;
    height: 1rem;
    color: var(--ems-primary);
    border: 1px solid var(--ems-gray-300);
    border-radius: var(--ems-radius-sm);
}

.form-checkbox:checked {
    background-color: var(--ems-primary);
    border-color: var(--ems-primary);
}

.form-error {
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--ems-danger);
}

.form-hint {
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--ems-gray-500);
}

/* Tables */
.table {
    width: 100%;
    background-color: var(--ems-white);
    border-collapse: collapse;
}

.table thead {
    background-color: var(--ems-gray-50);
    border-bottom: 1px solid var(--ems-gray-200);
}

.table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ems-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--ems-gray-900);
    border-bottom: 1px solid var(--ems-gray-100);
}

.table tbody tr:hover {
    background-color: var(--ems-gray-50);
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--ems-radius-full);
}

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

.badge-secondary {
    background-color: var(--ems-gray-200);
    color: var(--ems-gray-700);
}

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

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

.badge-danger {
    background-color: var(--ems-danger);
    color: var(--ems-white);
}

.badge-info {
    background-color: var(--ems-info);
    color: var(--ems-white);
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: var(--ems-radius);
}

.alert-success {
    background-color: #dcfce7;
    color: #166534;
    border-color: #bbf7d0;
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border-color: #fde68a;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border-color: #fecaca;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border-color: #bfdbfe;
}

/* Dashboard Stat Cards */
.stat-card {
    background: var(--ems-white);
    border-radius: var(--ems-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--ems-shadow);
    transition: var(--ems-transition);
}

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

.stat-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ems-radius);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ems-gray-900);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--ems-gray-600);
    margin-top: 0.25rem;
}

/* Quick Action Cards */
.quick-action-card {
    background: var(--ems-white);
    border-radius: var(--ems-radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--ems-shadow);
    border: 2px solid transparent;
    transition: var(--ems-transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.quick-action-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--ems-shadow-md);
    border-color: var(--ems-primary);
}

.quick-action-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.quick-action-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ems-gray-700);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 2rem;
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--ems-gray-600);
}

.pagination-nav {
    display: flex;
    gap: 0.5rem;
}

.pagination-prev,
.pagination-next {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ems-gray-700);
    background-color: var(--ems-white);
    border: 1px solid var(--ems-gray-300);
    border-radius: var(--ems-radius);
    transition: var(--ems-transition-fast);
    text-decoration: none;
}

.pagination-prev:hover,
.pagination-next:hover {
    background-color: var(--ems-gray-50);
    border-color: var(--ems-gray-400);
}

/* Loading States */
.loading {
    opacity: 0.5;
    pointer-events: none;
    position: relative;
}

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--ems-gray-300);
    border-top-color: var(--ems-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .card {
        border-radius: 0;
        box-shadow: none;
        border-top: 1px solid var(--ems-gray-200);
        border-bottom: 1px solid var(--ems-gray-200);
    }
    
    .card-header,
    .card-body {
        padding: 1rem;
    }
    
    .table {
        font-size: 0.75rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

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

/* Sidebar Specific Styles */
.sidebar {
    background-color: var(--ems-gray-900);
    color: var(--ems-white);
    width: 16rem;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    overflow-y: auto;
    z-index: 40;
    flex-shrink: 0;
}

/* Main content adjustment */
@media (min-width: 768px) {
    .ml-64 {
        margin-left: 16rem !important;
    }
}

/* Header specific styles */
.header-nav {
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
}

/* Mobile sidebar overlay */
@media (max-width: 1023px) {
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 25;
    }
}

.sidebar-logo {
    padding: 1rem;
    border-bottom: 1px solid var(--ems-gray-800);
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-section {
    margin-top: 1.5rem;
}

.sidebar-section-title {
    padding: 0 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ems-gray-400);
}

.sidebar-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--ems-gray-300);
    text-decoration: none;
    transition: var(--ems-transition-fast);
}

.sidebar-link:hover {
    background-color: var(--ems-gray-800);
    color: var(--ems-white);
}

.sidebar-link.active {
    background-color: var(--ems-primary);
    color: var(--ems-white);
}

.sidebar-icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-right: 0.75rem;
    font-size: 1.25rem;
}