:root {
    --candidate-primary: #1f4f8f;
    --candidate-primary-dark: #173b6b;
    --candidate-page-bg: #f4f7fb;
    --candidate-border: #dfe5ec;
    --candidate-text: #243246;
    --candidate-muted: #6f7c8f;
}

html {
    min-height: 100%;
}

body.candidate-body {
    min-height: 100vh;
    margin: 0;
    background: var(--candidate-page-bg);
    color: var(--candidate-text);
    display: flex;
    flex-direction: column;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

.candidate-header {
    min-height: 72px;
    background: #ffffff;
    border-bottom: 1px solid var(--candidate-border);
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1020;
}

.candidate-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--candidate-text);
    text-decoration: none;
}

    .candidate-brand:hover {
        color: var(--candidate-text);
    }

.candidate-brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--candidate-primary);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.candidate-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

    .candidate-brand-text strong {
        font-size: 16px;
    }

    .candidate-brand-text small {
        color: var(--candidate-muted);
        font-size: 12px;
    }

.candidate-user {
    text-align: right;
    line-height: 1.2;
}

    .candidate-user small {
        display: block;
        color: var(--candidate-muted);
        font-size: 11px;
    }

    .candidate-user strong {
        display: block;
        font-size: 14px;
    }

.candidate-main {
    flex: 1;
}

.candidate-footer {
    min-height: 58px;
    background: #ffffff;
    border-top: 1px solid var(--candidate-border);
    color: var(--candidate-muted);
    display: flex;
    align-items: center;
    font-size: 13px;
}

.candidate-panel {
    background: #ffffff;
    border: 1px solid var(--candidate-border);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(22, 42, 76, 0.06);
}

.candidate-page-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.candidate-page-subtitle {
    color: var(--candidate-muted);
    margin-bottom: 0;
}

.exam-instruction-list {
    padding-left: 1.25rem;
}

    .exam-instruction-list li {
        margin-bottom: 10px;
    }

.exam-meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.exam-meta-item {
    border: 1px solid var(--candidate-border);
    border-radius: 10px;
    padding: 16px;
    background: #f9fbfd;
}

.exam-meta-label {
    color: var(--candidate-muted);
    font-size: 12px;
    margin-bottom: 4px;
}

.exam-meta-value {
    font-size: 18px;
    font-weight: 700;
}


.quiz-sidebar {
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 105px);
    overflow-y: auto;
    padding-right: 10px;
    padding-bottom: 16px;
}

    .quiz-sidebar .card {
        border: 1px solid var(--candidate-border);
        border-radius: 12px;
    }

    .quiz-sidebar #timer {
        font-variant-numeric: tabular-nums;
        letter-spacing: 1px;
    }

.question-nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

    .question-nav-list .btn {
        min-width: 36px;
        margin-bottom: 0 !important;
    }

@media (max-width: 767.98px) {
    .quiz-sidebar {
        position: static;
        top: auto;
        max-height: none;
        overflow: visible;
        padding-right: 0;
        margin-bottom: 20px;
    }
}

@media (max-width: 767.98px) {
    .candidate-header {
        min-height: 64px;
    }

    .candidate-brand-text strong {
        font-size: 14px;
    }

    .candidate-brand-text small {
        display: none;
    }

    .exam-meta {
        grid-template-columns: 1fr;
    }

    .candidate-footer {
        text-align: center;
        padding: 14px 0;
    }
}