/**
 * Material Management System - Stylesheet
 * Modernes, responsives Design für PHP 8.4 System
 */

/* ==================== RESET & BASE ==================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Farben */
    --primary-color: #667eea;
    --primary-dark: #5a6fd8;
    --secondary-color: #764ba2;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    
    /* Graustufen */
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    /* Schatten */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow: 0 4px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 25px rgba(0,0,0,0.15);
    
    /* Übergänge */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    
    /* Border-Radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-sm: 4px;
    
    /* Abstände */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-100) 0%, #ffffff 100%);
    min-height: 100vh;
}

/* ==================== LAYOUT ==================== */

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

.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 300;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header .icon {
    font-size: 2rem;
}

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

.nav a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
    white-space: nowrap;
}

.nav a:hover,
.nav a.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-1px);
}

.content {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-xl);
    min-height: 60vh;
}

/* ==================== BUTTONS ==================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    user-select: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    color: white;
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 12px;
}

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

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #20c997);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #c82333);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #e0a800);
    color: var(--gray-800);
}

.btn-secondary {
    background: var(--gray-600);
}

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

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

/* ==================== FORMS ==================== */

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input[readonly] {
    background: var(--gray-100);
    color: var(--gray-600);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.search-box {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.search-box input {
    padding-left: 2.5rem;
    background: white;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-lg);
    font-size: 16px;
}

.search-box::before {
    content: '🔍';
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
    color: var(--gray-500);
    z-index: 1;
}

/* ==================== ALERTS ==================== */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border: none;
    border-radius: var(--border-radius);
    border-left: 4px solid;
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left-color: var(--success-color);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left-color: var(--danger-color);
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left-color: var(--warning-color);
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left-color: var(--info-color);
}

/* ==================== CARDS ==================== */

.material-card {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.material-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.material-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

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

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0;
}

.card-subtitle {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin: var(--spacing-xs) 0;
}

/* ==================== STATS ==================== */

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 300;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 500;
}

/* ==================== TABLES ==================== */

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

table th,
table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

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

/* ==================== STATUS BADGES ==================== */

.status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-available {
    background: #d4edda;
    color: #155724;
}

.status-assigned {
    background: #fff3cd;
    color: #856404;
}

.status-partial {
    background: #d1ecf1;
    color: #0c5460;
}

.material-category {
    display: inline-block;
    padding: 2px 8px;
    background: var(--gray-200);
    color: var(--gray-700);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

/* ==================== ANIMATIONS ==================== */

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

/* ==================== MODAL & OVERLAY ==================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-500);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--gray-800);
}

/* ==================== LOADING ==================== */

.loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-600);
}

.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    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); }
}

/* ==================== UTILITIES ==================== */

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

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }
.d-block { display: block; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.m-0 { margin: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.text-primary { color: var(--primary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }
.text-muted { color: var(--gray-600); }

.bg-primary { background-color: var(--primary-color); }
.bg-success { background-color: var(--success-color); }
.bg-danger { background-color: var(--danger-color); }
.bg-warning { background-color: var(--warning-color); }
.bg-light { background-color: var(--light-color); }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

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

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

/* ==================== RESPONSIVE DESIGN ==================== */

@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .header h1 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-md);
    }
    
    .nav {
        justify-content: center;
        width: 100%;
    }
    
    .nav a {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .content {
        padding: var(--spacing-lg);
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .material-card {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .btn {
        font-size: 13px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    table {
        font-size: 0.9rem;
    }
    
    table th,
    table td {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .header {
        margin: var(--spacing-md) 0;
        padding: var(--spacing-md);
    }
    
    .content {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .nav {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .nav a {
        font-size: 0.8rem;
        padding: var(--spacing-xs);
    }
    
    .btn {
        font-size: 12px;
        padding: 6px 10px;
    }
    
    .modal {
        padding: var(--spacing-lg);
        width: 95%;
    }
    
    .search-box input {
        font-size: 14px;
    }
}

/* ==================== PRINT STYLES ==================== */

@media print {
    body {
        background: white;
        color: black;
    }
    
    .header,
    .nav,
    .btn {
        display: none;
    }
    
    .content {
        box-shadow: none;
        border: none;
        padding: 0;
    }
    
    .material-card {
        border: 1px solid black;
        break-inside: avoid;
        margin-bottom: var(--spacing-md);
    }
    
    .stats {
        display: none;
    }
}

/* ==================== DARK MODE SUPPORT ==================== */

@media (prefers-color-scheme: dark) {
    :root {
        --gray-100: #212529;
        --gray-200: #343a40;
        --gray-300: #495057;
        --gray-400: #6c757d;
        --gray-500: #adb5bd;
        --gray-600: #ced4da;
        --gray-700: #dee2e6;
        --gray-800: #e9ecef;
        --gray-900: #f8f9fa;
    }
    
    body {
        background: linear-gradient(135deg, #212529 0%, #343a40 100%);
        color: var(--gray-800);
    }
    
    .content {
        background: var(--gray-200);
        color: var(--gray-800);
    }
    
    .material-card {
        background: var(--gray-200);
        border-color: var(--gray-300);
    }
    
    table {
        background: var(--gray-200);
    }
    
    table th {
        background: var(--gray-300);
    }
}

/* ==================== ACCESSIBILITY ==================== */

/* Focus-Indikatoren */
button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Reduzierte Bewegung 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;
    }
}

/* Hoher Kontrast */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --success-color: #008000;
        --danger-color: #ff0000;
        --warning-color: #ff8c00;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
    
    .material-card {
        border-width: 3px;
    }
}