:root {
    --primary-color: #f8b4b4;
    --secondary-color: #fecaca;
    --accent-color: #fde8e8;
    --success-color: #86efac;
    --warning-color: #fde047;
    --danger-color: #fca5a5;
    --light-bg: #fef7f7;
    --white: #ffffff;
    --text-dark: #374151;
    --text-muted: #6b7280;
    --border-color: #fecaca;
    --gradient-start: #f8b4b4;
    --gradient-end: #fecaca;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

.main-content {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    padding: 40px;
    margin: 40px auto;
    max-width: 900px;
    position: relative;
    overflow: hidden;
}

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

.page-title {
    color: var(--text-dark);
    margin-bottom: 10px;
    font-weight: 700;
    font-size: 2.5rem;
    text-align: center;
}

.subtitle {
    color: var(--text-muted);
    margin-bottom: 40px;
    font-size: 1.2rem;
    text-align: center;
    font-weight: 400;
}

.table-container {
    margin-top: 30px;
}

.table {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border: none;
}

        .table thead th {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--text-dark);
            border: none;
            font-weight: 600;
            padding: 20px 15px;
            font-size: 1.1rem;
        }

.table tbody th {
    background-color: var(--light-bg);
    color: var(--text-dark);
    font-weight: 600;
    border: none;
    padding: 20px 15px;
}

.table td {
    border: none;
    padding: 15px;
    vertical-align: middle;
}

.form-control {
    text-align: center;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 15px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: var(--white);
}

        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(248, 180, 180, 0.25);
            transform: translateY(-2px);
        }

.form-control:hover {
    border-color: var(--primary-color);
}

        .btn-calculate {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border: none;
            color: var(--text-dark);
            padding: 15px 40px;
            font-weight: 600;
            font-size: 1.1rem;
            border-radius: 25px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(248, 180, 180, 0.3);
        }

        .btn-calculate:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(248, 180, 180, 0.4);
            color: var(--text-dark);
        }

.btn-calculate:active {
    transform: translateY(-1px);
}

.result {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, var(--light-bg), var(--white));
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.result div {
    margin-bottom: 12px;
    font-size: 1.1rem;
    color: var(--text-dark);
    font-weight: 500;
    padding: 8px 0;
}

.result div:last-child {
    margin-bottom: 0;
}

.result div:first-child {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 15px;
}

.note-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
    margin-top: 20px;
}

.note-input-group {
    text-align: center;
}

.note-label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.note-input {
    width: 100%;
    text-align: center;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

        .note-input:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(248, 180, 180, 0.25);
            transform: translateY(-2px);
        }

@media (max-width: 768px) {
    .main-content {
        margin: 20px;
        padding: 25px;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .table thead th,
    .table tbody th,
    .table td {
        padding: 12px 8px;
        font-size: 0.9rem;
    }
    
    .form-control {
        padding: 10px;
        font-size: 1rem;
    }
}

.loading {
    opacity: 0.7;
    pointer-events: none;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

        .klausur-warnung {
            margin-top: 20px;
            padding: 15px;
            background: linear-gradient(135deg, var(--danger-color), #fecaca);
            color: var(--text-dark);
            border-radius: 8px;
            font-weight: 600;
            text-align: center;
            box-shadow: 0 4px 15px rgba(252, 165, 165, 0.4);
            animation: pulse 2s infinite;
        }

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

.app-logo {
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1.5rem;
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 24px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.07);
    background: var(--white);
    border: 2px solid var(--secondary-color);
}