/* Base styles */
body {
    font-family: system-ui, -apple-system, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}
.back-button {
    margin: 2rem;
    padding: 2rem;
}


/* Card styles */
.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    max-width: 1200px;
    margin: 0 auto;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e5e5;
}

.card-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.card-content {
    padding: 1.5rem;
}

/* Semester container styles */
.semester-container {
    margin-bottom: 2rem;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    overflow: hidden;
}

.semester-header {
    background-color: #f8f9fa;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.semester-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.semester-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Table styles */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e5e5e5;
}

th {
    background-color: #f8f9fa;
    font-weight: 600;
}

thead th {
    position: sticky;
    top: 0;
    background-color: #f8f9fa;
    z-index: 1;
}

/* Grade colors */
.grade-a, .grade-p { color: #059669; }
.grade-b { color: #b45309; }
.grade-c { color: #9a3412; }
.grade-f, .grade-uw { color: #dc2626; }
.grade-ip { color: #2563eb; }
.grade-retaken { color: #6b7280; }

/* Row background colors */
.row-a { background-color: #f0fdf4; }
.row-b { background-color: #fef3c7; }
.row-c { background-color: #fff7ed; }
.row-f { background-color: #fef2f2; }
.row-ip { background-color: #eff6ff; }
.row-retaken {
    background-color: #f3f4f6;
    text-decoration: line-through;
    color: #6b7280;
}

/* Cumulative stats styles */
.cumulative-stats {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 2rem;
}

.cumulative-stats h3 {
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: #6b7280;
    margin: 0;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .semester-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .semester-stats {
        flex-wrap: wrap;
    }
}