.exam-tool-page {
    background: #f5f7fb;
    padding: 40px 0 70px;
}

.exam-tool-page:fullscreen,
.exam-tool-page:-webkit-full-screen,
.exam-tool-page.is-faux-fullscreen {
    background: radial-gradient(circle at top, #f8fbff 0%, #e9f1ff 42%, #e9f6f0 100%);
    padding: 20px 0 30px;
    overflow: auto;
}

.exam-tool-page:fullscreen .container,
.exam-tool-page:-webkit-full-screen .container,
.exam-tool-page.is-faux-fullscreen .container {
    max-width: min(1280px, 96vw);
}

body.exam-tool-faux-active {
    overflow: hidden;
}

body.exam-tool-faux-active .site-header {
    display: none;
}

.exam-tool-panel {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.1);
    padding: 30px;
    max-width: 920px;
    margin: 0 auto;
}

.exam-tool-page:fullscreen .exam-tool-panel,
.exam-tool-page:-webkit-full-screen .exam-tool-panel,
.exam-tool-page.is-faux-fullscreen .exam-tool-panel {
    min-height: calc(100vh - 52px);
    border: 1px solid rgba(37, 99, 235, 0.16);
    box-shadow: 0 26px 60px rgba(15, 23, 42, 0.16);
}

.exam-tool-panel[data-theme="focus"] {
    --elapsed-bg: #fff4f4;
    --elapsed-border: #f6caca;
    --elapsed-time: #a44a4a;
    --elapsed-label: #b55a5a;
    --remaining-bg: #f2fbf4;
    --remaining-border: #bfe8c7;
    --remaining-time: #2f7a45;
    --remaining-label: #419157;
}

.exam-tool-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.exam-tool-title-row h1,
.exam-info-title {
    margin-bottom: 0;
    text-align: center;
}

.exam-tool-lead {
    text-align: center;
    margin: 10px 0 24px;
}

.exam-tool-theme-btn,
.exam-tool-fullscreen-btn,
.exam-tool-action,
.exam-tool-link,
.exam-switch-link {
    border: 1px solid rgba(15, 23, 42, 0.18);
    border-radius: 999px;
    min-height: 44px;
    padding: 0 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font: inherit;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
    transition: transform 140ms ease, border-color 140ms ease, background 140ms ease, color 140ms ease;
}

.exam-tool-theme-btn:hover,
.exam-tool-fullscreen-btn:hover,
.exam-tool-action:hover,
.exam-tool-link:hover,
.exam-switch-link:hover {
    transform: translateY(-1px);
    text-decoration: none;
}

.exam-tool-theme-btn.theme-classic {
    background: #f1f5ff;
    border-color: #c9d6ff;
    color: #3348a3;
}

.exam-tool-theme-btn.theme-focus {
    background: linear-gradient(90deg, #fff3f3 0%, #f4fbf6 100%);
    border-color: #e6c8c8;
    color: #2f7a45;
}

.exam-tool-theme-btn.is-active,
.exam-switch-link.active {
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.28);
    border-color: rgba(37, 99, 235, 0.58);
}

.exam-tool-fullscreen-wrap {
    text-align: center;
    margin-bottom: 18px;
}

.exam-tool-fullscreen-btn {
    background: #fff;
    color: #111827;
}

.exam-tool-fullscreen-btn.is-active {
    background: #111827;
    border-color: #111827;
    color: #fff;
}

.exam-tool-form {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 14px;
    align-items: end;
}

.exam-tool-field {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.exam-tool-field--wide {
    grid-column: span 4;
}

.exam-tool-field--small {
    grid-column: span 2;
}

.exam-tool-field label {
    color: #1f2937;
    font-weight: 700;
}

.exam-tool-field select {
    width: 100%;
    min-height: 46px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    padding: 0 12px;
    background: #fff;
    color: #111827;
    font: inherit;
}

.exam-tool-field select:focus {
    outline: 3px solid rgba(58, 134, 255, 0.2);
    border-color: var(--accent-secondary);
}

.exam-tool-form-note {
    grid-column: 1 / -1;
    min-height: 24px;
    font-size: 0.92rem;
    color: #0f172a;
    font-weight: 700;
    text-align: center;
}

.exam-tool-actions {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.exam-tool-action {
    border-radius: 10px;
    min-width: 128px;
}

.exam-tool-action.primary {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
}

.exam-tool-action.secondary {
    background: #fff;
    color: #475569;
}

.exam-tool-action:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.exam-tool-alert {
    margin: 16px 0 0;
    border: 1px solid #fecaca;
    border-radius: 12px;
    background: #fef2f2;
    color: #991b1b;
    padding: 12px 14px;
    font-weight: 700;
}

.exam-tool-alert[hidden],
.pomodoro-status[hidden] {
    display: none;
}

.pomodoro-status {
    margin-top: 12px;
    border: 1px solid rgba(30, 64, 175, 0.22);
    border-radius: 12px;
    background: linear-gradient(130deg, #eef2ff 0%, #effcf4 100%);
    padding: 10px 12px;
}

.pomodoro-status-phase {
    font-size: 1rem;
    font-weight: 800;
    color: #1e3a8a;
}

.pomodoro-status-hint {
    margin-top: 3px;
    color: #334155;
    font-weight: 600;
    font-size: 0.86rem;
}

.exam-tool-marquee {
    margin: 16px 0;
    overflow: hidden;
    border-radius: 10px;
    border: 1px solid rgba(30, 64, 175, 0.18);
    background: linear-gradient(90deg, rgba(30, 64, 175, 0.08), rgba(22, 163, 74, 0.08));
}

.exam-tool-marquee-track {
    display: inline-flex;
    align-items: center;
    min-width: max-content;
    white-space: nowrap;
    animation: examToolMarquee 24s linear infinite;
    will-change: transform;
}

.exam-tool-marquee-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.86rem;
    font-weight: 700;
    color: rgba(15, 23, 42, 0.92);
    padding: 8px 0;
    margin-right: 34px;
}

.exam-tool-dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: rgba(30, 64, 175, 0.74);
    flex: 0 0 auto;
}

@keyframes examToolMarquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.countdown-times {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 14px;
    text-align: center;
}

.countdown-time-box {
    border: 1px solid rgba(102, 126, 234, 0.20);
    border-radius: 14px;
    padding: 18px 14px;
    background: rgba(102, 126, 234, 0.06);
    height: 100%;
}

.time-box-elapsed {
    border-color: var(--elapsed-border, rgba(102, 126, 234, 0.20));
    background: var(--elapsed-bg, rgba(102, 126, 234, 0.06));
}

.time-box-remaining {
    border-color: var(--remaining-border, rgba(102, 126, 234, 0.20));
    background: var(--remaining-bg, rgba(102, 126, 234, 0.06));
}

.countdown-label {
    display: inline-block;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #6c757d;
    margin-bottom: 8px;
}

.time-box-elapsed .countdown-label {
    color: var(--elapsed-label, #6c757d);
}

.time-box-remaining .countdown-label {
    color: var(--remaining-label, #6c757d);
}

.countdown-time {
    font-size: clamp(1.6rem, 4.2vw, 2.2rem);
    font-weight: 800;
    letter-spacing: 0.06em;
    color: #212529;
    font-variant-numeric: tabular-nums;
}

.time-box-elapsed .countdown-time {
    color: var(--elapsed-time, #212529);
}

.time-box-remaining .countdown-time {
    color: var(--remaining-time, #212529);
}

.countdown-progress {
    text-align: center;
    margin-top: 24px;
}

.countdown-progress-value {
    font-size: clamp(2rem, 4.8vw, 3rem);
    font-weight: 800;
    color: #4f46e5;
    line-height: 1.1;
}

.countdown-progress-text {
    color: #6c757d;
    font-weight: 700;
}

.countdown-progress-track {
    width: min(440px, 100%);
    height: 12px;
    border-radius: 999px;
    background: #e5e7eb;
    margin: 14px auto 0;
    overflow: hidden;
}

.countdown-progress-bar {
    height: 100%;
    width: 0;
    border-radius: inherit;
    background: #16a34a;
    transition: width 120ms linear;
}

.exam-tool-links {
    margin-top: 26px;
}

.exam-tool-links-label {
    margin-bottom: 8px;
    color: #64748b;
    font-size: 0.9rem;
}

.exam-tool-links-row,
.exam-switch {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.exam-tool-link,
.exam-switch-link {
    color: #0d3b66;
    background: #fff;
}

.exam-info-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.exam-info-summary {
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 14px;
}

.main-countdown {
    text-align: center;
    border-radius: 16px;
    background: linear-gradient(145deg, #eef2ff, #f8fafc);
    border: 1px solid rgba(79, 70, 229, 0.25);
    padding: 22px;
    margin-bottom: 24px;
}

.main-countdown-label,
.info-label {
    font-size: 12px;
    font-weight: 800;
    color: #64748b;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.main-countdown-value {
    font-size: clamp(1.8rem, 4.5vw, 3rem);
    font-weight: 800;
    letter-spacing: 0.03em;
    color: #312e81;
    font-variant-numeric: tabular-nums;
}

.main-countdown-sub {
    margin-top: 6px;
    color: #64748b;
    font-size: 0.92rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.info-item {
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 12px;
    padding: 14px;
    background: #fff;
}

.info-value {
    font-size: 1rem;
    font-weight: 800;
    color: #0f172a;
}

.notes-list li {
    margin-bottom: 8px;
}

.source-list {
    display: grid;
    gap: 8px;
    padding-left: 0;
    list-style: none;
}

.source-list a {
    display: block;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 12px;
    padding: 12px 14px;
    background: #fff;
    font-weight: 700;
    color: #0d3b66;
}

@media (max-width: 820px) {
    .exam-tool-panel {
        padding: 24px 18px;
    }

    .exam-tool-title-row {
        flex-wrap: wrap;
        gap: 8px;
    }

    .exam-tool-field--wide,
    .exam-tool-field--small {
        grid-column: span 6;
    }

    .countdown-times,
    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .exam-tool-field--wide,
    .exam-tool-field--small {
        grid-column: 1 / -1;
    }

    .exam-tool-action,
    .exam-tool-link,
    .exam-switch-link {
        width: 100%;
    }
}