:root {
    --exam-primary: #1e5f8c;
    --exam-primary-dark: #164a6e;
    --exam-success: #1f8a4c;
    --exam-danger: #c0392b;
    --exam-bg: #f4f7fa;
    --exam-border: #dfe6ec;
    --exam-text: #263238;
    --exam-muted: #64748b;
}

.exam-wrap {
    max-width: 960px;
    margin: 40px auto;
    padding: 0 20px;
    font-family: 'Segoe UI', Arial, sans-serif;
    color: var(--exam-text);
}

.exam-wrap-narrow { max-width: 640px; }

.exam-page-title { font-size: 28px; margin-bottom: 6px; }
.exam-page-subtitle { color: var(--exam-muted); margin-bottom: 24px; }

.exam-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.exam-card {
    background: #fff;
    border: 1px solid var(--exam-border);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
    display: flex;
    flex-direction: column;
}

.exam-card h2 { font-size: 18px; margin: 0 0 6px; }
.exam-card-course { color: var(--exam-primary); font-size: 13px; font-weight: 600; margin: 0 0 8px; }
.exam-card-desc { color: var(--exam-muted); font-size: 14px; margin: 0 0 14px; flex-grow: 1; }

.exam-card-meta { list-style: none; padding: 0; margin: 0 0 16px; font-size: 13px; color: var(--exam-muted); }
.exam-card-meta li { margin-bottom: 4px; }

.exam-empty {
    background: #fff;
    border: 1px dashed var(--exam-border);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    color: var(--exam-muted);
}

.exam-btn {
    display: inline-block;
    text-align: center;
    padding: 11px 18px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

.exam-btn-primary { background: var(--exam-primary); color: #fff; }
.exam-btn-primary:hover { background: var(--exam-primary-dark); }
.exam-btn-secondary { background: #fff; color: var(--exam-primary); border: 1px solid var(--exam-primary); margin-top: 16px; }
.exam-btn-block { width: 100%; }
.exam-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.exam-instructions {
    background: #fff;
    border: 1px solid var(--exam-border);
    border-radius: 8px;
    padding: 18px 20px;
    margin-bottom: 22px;
}
.exam-instructions h3 { margin-top: 0; font-size: 15px; }
.exam-instructions ul { margin: 0; padding-left: 18px; color: var(--exam-muted); font-size: 14px; line-height: 1.7; }

.exam-form { background: #fff; border: 1px solid var(--exam-border); border-radius: 8px; padding: 20px; }
.exam-form-group { margin-bottom: 16px; }
.exam-form-group label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 6px; }
.exam-form-group input, .exam-form-group select, .exam-form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--exam-border);
    border-radius: 6px;
    font-size: 14px;
    box-sizing: border-box;
}

.exam-alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.exam-alert-error { background: #fdecea; color: var(--exam-danger); border: 1px solid #f5c6cb; }

.exam-attempt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    border: 1px solid var(--exam-border);
    border-radius: 8px;
    padding: 14px 20px;
    margin-bottom: 20px;
    position: sticky;
    top: 10px;
    z-index: 10;
}
.exam-attempt-header h1 { font-size: 18px; margin: 0; }

.exam-timer {
    font-size: 22px;
    font-weight: 700;
    background: var(--exam-bg);
    border-radius: 6px;
    padding: 6px 16px;
    color: var(--exam-primary);
    font-variant-numeric: tabular-nums;
}
.exam-timer-warning { color: var(--exam-danger); animation: exam-pulse 1s infinite; }
@keyframes exam-pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.exam-question {
    background: #fff;
    border: 1px solid var(--exam-border);
    border-radius: 8px;
    padding: 18px 20px;
    margin-bottom: 16px;
}
.exam-question-text { font-weight: 600; margin: 0 0 12px; }
.exam-question-number { color: var(--exam-primary); }
.exam-question-marks { color: var(--exam-muted); font-weight: 400; font-size: 13px; }

.exam-options { display: flex; flex-direction: column; gap: 8px; }
.exam-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--exam-border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}
.exam-option:hover { background: var(--exam-bg); }
.exam-option input { margin: 0; }

.exam-result-card {
    background: #fff;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    border: 1px solid var(--exam-border);
}
.exam-result-badge {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 16px;
    font-size: 13px;
}
.exam-result-pass .exam-result-badge { background: #e5f7ea; color: var(--exam-success); }
.exam-result-fail .exam-result-badge { background: #fdecea; color: var(--exam-danger); }

.exam-result-card h1 { font-size: 22px; margin: 0 0 10px; }
.exam-result-name, .exam-result-reg { color: var(--exam-muted); margin: 4px 0; font-size: 14px; }

.exam-result-score { margin: 24px 0; }
.exam-result-score-value { display: block; font-size: 36px; font-weight: 700; color: var(--exam-primary); }
.exam-result-percentage { color: var(--exam-muted); font-size: 15px; }

.exam-result-table { width: 100%; border-collapse: collapse; margin-top: 16px; text-align: left; }
.exam-result-table td { padding: 8px 0; border-top: 1px solid var(--exam-border); font-size: 14px; }
.exam-result-table td:first-child { color: var(--exam-muted); }
.exam-result-table td:last-child { text-align: right; font-weight: 600; }

.exam-lookup-results { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.exam-lookup-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    border: 1px solid var(--exam-border);
    border-radius: 8px;
    padding: 14px 16px;
    font-size: 14px;
}
.exam-lookup-meta { color: var(--exam-muted); font-size: 12px; margin-top: 2px; }
.exam-lookup-score { display: flex; align-items: center; gap: 10px; }
.exam-lookup-score a { color: var(--exam-primary); text-decoration: none; font-weight: 600; }
.exam-tag-pass, .exam-tag-fail { padding: 2px 10px; border-radius: 12px; font-size: 11px; font-weight: 700; }
.exam-tag-pass { background: #e5f7ea; color: var(--exam-success); }
.exam-tag-fail { background: #fdecea; color: var(--exam-danger); }

@media (max-width: 640px) {
    .exam-attempt-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .exam-lookup-row { flex-direction: column; align-items: flex-start; gap: 8px; }
}