/* Common CSS for Admin, Teacher, and Student Areas */
/* CSS Variables for consistent colors */
:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --gray-light: #ecf0f1;
    --gray-medium: #bdc3c7;
    --gray-dark: #7f8c8d;
    --text-color: #2c3e50;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 14px;
    animation: fadeIn 0.5s ease-in;
}

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

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* Sidebar Styles */
.sidebar {
    background: var(--secondary-color);
    color: white;
    width: 250px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    padding: 20px;
    z-index: 1000;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.sidebar h2 {
    margin-bottom: 30px;
    color: var(--gray-light);
    font-size: 18px;
    font-weight: 600;
}

.sidebar nav ul {
    list-style: none;
}

.sidebar nav ul li {
    margin: 8px 0;
}

.sidebar nav ul li a {
    color: var(--gray-medium);
    text-decoration: none;
    display: block;
    padding: 12px 15px;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.sidebar nav ul li a:hover,
.sidebar nav ul li a.active {
    background: #34495e;
    color: white;
    transform: translateX(5px);
}

/* Main Content */
.main-content {
    margin-left: 250px;
    padding: 25px;
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.header h1 {
    color: var(--secondary-color);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.header p {
    color: var(--gray-dark);
    font-size: 16px;
}

/* Cards */
.card {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
    border: 1px solid #f0f0f0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.card h3 {
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-size: 20px;
    font-weight: 600;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid #f0f0f0;
    transition: transform 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
}

.stat-card h3 {
    color: var(--gray-dark);
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 500;
}

.stat-card .number {
    font-size: 2.5em;
    font-weight: 700;
    color: var(--secondary-color);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

table th,
table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    background: var(--light-bg);
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table tbody tr {
    transition: background 0.2s ease;
}

table tbody tr:hover {
    background: #f8f9fa;
}

table tbody tr:nth-child(even) {
    background: #fafbfc;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 14px;
}

input,
select,
textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-color);
    background: var(--white);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

input::placeholder,
textarea::placeholder {
    color: var(--gray-dark);
}

textarea[readonly] {
    background: var(--light-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
    min-width: 100px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #2980b9);
    color: white;
    animation: pulse 2s infinite;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, var(--primary-color));
    animation: none;
}

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

.btn-success:hover {
    background: #229954;
}

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

.btn-danger:hover {
    background: #c0392b;
}

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

.btn-warning:hover {
    background: #e67e22;
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    display: inline-block;
}

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

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

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

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

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--border-color);
    background: var(--white);
    border-radius: 8px 8px 0 0;
    overflow: hidden;
}

.tab {
    padding: 15px 25px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    font-weight: 500;
    flex: 1;
    text-align: center;
}

.tab:hover {
    background: var(--light-bg);
}

.tab.active {
    border-bottom-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--light-bg);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Question Items */
.question-item {
    border: 1px solid var(--border-color);
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
}

.question-item h4 {
    margin: 0 0 15px 0;
    color: var(--secondary-color);
    font-size: 16px;
}

/* Option Items */
.option_item {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    padding: 10px;
    background: var(--light-bg);
    border-radius: 6px;
}

.option_item input[type="text"],
.option_item textarea {
    flex: 1;
    margin-right: 15px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    min-width: 200px; /* Ensure minimum width for teacher assignments */
}

.option_item input[type="radio"] {
    margin-right: 8px;
    vertical-align: middle; /* Align radio buttons properly */
}

/* Success and Error Messages */
.success {
    color: var(--success-color);
    margin: 15px 0;
    padding: 15px;
    background: #d4edda;
    border-radius: 8px;
    border-left: 4px solid var(--success-color);
    font-weight: 500;
}

.error {
    color: var(--danger-color);
    margin: 15px 0;
    padding: 15px;
    background: #f8d7da;
    border-radius: 8px;
    border-left: 4px solid var(--danger-color);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        width: 200px;
    }

    .main-content {
        margin-left: 200px;
        padding: 15px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .header h1 {
        font-size: 24px;
    }

    .card,
    .stat-card {
        padding: 20px;
    }

    table th,
    table td {
        padding: 10px;
        font-size: 13px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .main-content {
        margin-left: 0;
        padding: 15px;
    }

    .tabs {
        flex-direction: column;
    }

    .tab {
        border-bottom: 1px solid var(--border-color);
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 5px; }
.mb-2 { margin-bottom: 10px; }
.mb-3 { margin-bottom: 15px; }
.mb-4 { margin-bottom: 20px; }
.mb-5 { margin-bottom: 25px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 5px; }
.mt-2 { margin-top: 10px; }
.mt-3 { margin-top: 15px; }
.mt-4 { margin-top: 20px; }
.mt-5 { margin-top: 25px; }

.p-0 { padding: 0; }
.p-1 { padding: 5px; }
.p-2 { padding: 10px; }
.p-3 { padding: 15px; }
.p-4 { padding: 20px; }
.p-5 { padding: 25px; }

/* Specific Student Area Styles */
.subject-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    color: white;
    font-size: 12px;
    font-weight: 500;
    margin-right: 8px;
}

.performance-excellent {
    color: var(--success-color);
    font-weight: 600;
}

.performance-good {
    color: var(--warning-color);
    font-weight: 600;
}

.performance-poor {
    color: var(--danger-color);
    font-weight: 600;
}

.performance-pending {
    color: var(--gray-dark);
    font-style: italic;
}

.urgent {
    background: #fff3cd !important;
    border-left: 4px solid var(--warning-color);
}

/* Button Groups */
.btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-group .btn {
    flex: 1;
    min-width: 120px;
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Focus States for Accessibility */
.btn:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .sidebar,
    .btn,
    .tabs {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
    }

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




















/* Login-spezifischer Container ohne Sidebar-Margin */
.login-content {
    background: var(--white);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(0,0,0,0.05);
    margin: 0 auto;
    max-width: 800px;
}
.clean-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Carddesign */
.clean-subject-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 18px;
    border: 1px solid #e7e7e7;
    box-shadow: 0 2px 5px rgba(0,0,0,0.04);
    transition: all 0.15s ease-in-out;
    position: relative;
    overflow: hidden;
}

/* Farbiger Rand der komplett durchgeht */
.clean-subject-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--subject-color, #888);
}

.clean-subject-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.07);
}

/* Kopfbereich */
.subject-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.subject-color-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
}

/* Beschreibung */
.subject-desc {
    color: #666;
    font-size: 14px;
    margin: 8px 0 14px;
}

/* Footer */
.subject-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.performance-label {
    font-weight: 600;
    font-size: 14px;
    color: #333;
}

.no-perf {
    font-size: 13px;
    color: #999;
}

/* Farben für Leistungswerte */
.performance-value.performance-excellent {
    color: #2ecc71;
    font-weight: bold;
}

.performance-value.performance-good {
    color: #f1c40f;
    font-weight: bold;
}

.performance-value.performance-poor {
    color: #e74c3c;
    font-weight: bold;
}