:root {
    --bg: #f4f2ec;
    --text: #1f2933;
    --muted: #617080;
    --surface: #ffffff;
    --line: #d7dde3;
    --accent: #0f766e;
    --accent-dark: #115e59;
    --danger: #b42318;
    --danger-bg: #fff1f0;
    --success: #1a7f37;
    --success-bg: #effaf1;
    --warning-bg: #fff8df;
    --warning-line: #e7c96f;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.55;
}

a {
    color: var(--accent-dark);
}

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-header,
.site-footer {
    background: #263238;
    color: #f8fafc;
}

.site-header {
    padding: 18px 0;
}

.site-footer {
    margin-top: auto;
    padding: 18px 0;
}

.site-footer a {
    color: #a7f3d0;
    font-weight: 700;
}

.site-footer a:hover,
.site-footer a:focus {
    color: #ffffff;
}

.container {
    width: min(100% - 32px, 980px);
    margin: 0 auto;
}

.site-title {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
}

.main {
    padding: 36px 0 48px;
}

.panel,
.question,
.result-question {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 24px;
}

.panel + .panel,
.question + .question,
.result-question + .result-question {
    margin-top: 18px;
}

.intro-text p {
    margin: 0 0 14px;
}

.notice {
    background: var(--warning-bg);
    border: 1px solid var(--warning-line);
    border-radius: 8px;
    padding: 14px 16px;
    margin: 18px 0;
}

.telegram-note {
    font-weight: 700;
}

.button-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 24px;
}

.button {
    border: 0;
    border-radius: 6px;
    background: var(--accent);
    color: #ffffff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 18px;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
}

.button:hover,
.button:focus {
    background: var(--accent-dark);
}

.button.secondary {
    background: #4b5563;
}

.exam-bar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: #fffbeb;
    border-bottom: 1px solid #e7c96f;
    padding: 12px 0;
}

.exam-bar-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
}

.timer {
    color: var(--danger);
    font-size: 24px;
    font-weight: 700;
    white-space: nowrap;
}

.exam-page .question-list {
    user-select: none;
}

.question-title {
    margin: 0 0 16px;
    font-size: 20px;
}

.answers {
    border: 0;
    padding: 0;
    margin: 0;
}

.answer-option {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 12px;
    margin-top: 10px;
}

.answer-option input {
    margin-top: 5px;
}

.score {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 8px;
}

.verdict {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
}

.answer-review {
    border-radius: 6px;
    border: 1px solid var(--line);
    padding: 10px 12px;
    margin-top: 8px;
}

.answer-review.correct {
    background: var(--success-bg);
    border-color: var(--success);
}

.answer-review.wrong {
    background: var(--danger-bg);
    border-color: var(--danger);
}

.answer-label {
    display: block;
    color: var(--muted);
    font-size: 14px;
    font-weight: 700;
}

.explanation {
    margin-top: 14px;
    color: var(--text);
}

.muted {
    color: var(--muted);
}

.printing-blocked .question-list {
    display: none;
}

@media print {
    .exam-page .question-list {
        display: none;
    }
}

@media (max-width: 680px) {
    .main {
        padding-top: 24px;
    }

    .panel,
    .question,
    .result-question {
        padding: 18px;
    }

    .exam-bar-inner {
        align-items: flex-start;
        flex-direction: column;
    }
}