@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Fira+Code:wght@400;500&display=swap");

*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    --brand: #2563eb;
    --brand-dark: #1d4ed8;
    --brand-soft: rgba(37, 99, 235, 0.09);
    --brand-border: rgba(37, 99, 235, 0.22);
    --green: #059669;
    --green-soft: rgba(5, 150, 105, 0.1);
    --green-border: rgba(5, 150, 105, 0.28);
    --amber: #d97706;
    --amber-soft: rgba(217, 119, 6, 0.1);
    --red: #dc2626;
    --red-soft: rgba(220, 38, 38, 0.08);
    --surface: #ffffff;
    --surface-2: #f4f6fb;
    --surface-3: #eef0f7;
    --border: #e2e5ef;
    --border-dark: #c8ccdc;
    --text: #111827;
    --text-2: #4b5563;
    --text-3: #9ca3af;
    --opt-sel-bg: #2563eb;
    --opt-sel-text: #ffffff;
    --opt-sel-border: #1d4ed8;
    --radius: 14px;
    --radius-sm: 9px;
}

.dark {
    --surface: #111827;
    --surface-2: #1f2937;
    --surface-3: #374151;
    --border: #374151;
    --border-dark: #4b5563;
    --text: #f9fafb;
    --text-2: #d1d5db;
    --text-3: #6b7280;
    --opt-sel-bg: #3b82f6;
    --opt-sel-text: #ffffff;
    --opt-sel-border: #2563eb;
}

.exam-root {
    margin: 15px;
    font-family: "Plus Jakarta Sans", sans-serif;
}

.preview-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(217, 119, 6, 0.1);
    border: 1px solid rgba(217, 119, 6, 0.3);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    margin-bottom: 18px;
    font-size: 0.79rem;
    font-weight: 600;
    color: var(--amber);
}

.exam-meta-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.exam-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 99px;
    border: 1px solid;
}

.badge-blue {
    background: var(--brand-soft);
    color: var(--brand);
    border-color: var(--brand-border);
}

.badge-green {
    background: var(--green-soft);
    color: var(--green);
    border-color: var(--green-border);
}

.badge-amber {
    background: var(--amber-soft);
    color: var(--amber);
    border-color: rgba(217, 119, 6, 0.3);
}

.badge-red {
    background: var(--red-soft);
    color: var(--red);
    border-color: rgba(220, 38, 38, 0.25);
}

.exam-body {
    display: grid;
    grid-template-columns: 230px 1fr;
    gap: 20px;
    align-items: start;
}

/* ── Sidebar ── */
.exam-sidebar {
    position: sticky;
    top: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.sidebar-head {
    padding: 16px 16px 14px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.sidebar-exam-title {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--text);
    margin: 0 0 2px;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.sidebar-exam-sub {
    font-size: 0.68rem;
    color: var(--text-3);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-timer {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.sidebar-timer-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-3);
}

.sidebar-timer-val {
    font-family: "Fira Code", monospace;
    font-size: 1.55rem;
    font-weight: 500;
    color: var(--brand);
    line-height: 1;
}

.sidebar-timer-val.warning {
    color: var(--amber);
}

.sidebar-timer-val.danger {
    color: var(--red);
    animation: blink-red 1s ease-in-out infinite;
}

@keyframes blink-red {
    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Sidebar bloque de puntaje (resultados) */
.sidebar-score-block {
    display: none;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.sidebar-score-block.visible {
    display: flex;
}

.offline-badge {
    display: none;
    align-items: center;
    gap: 5px;
    background: var(--amber-soft);
    border: 1px solid rgba(217, 119, 6, 0.3);
    border-radius: 99px;
    padding: 4px 12px;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--amber);
    margin: 8px 16px 0;
}

.offline-badge.visible {
    display: inline-flex;
}

.sidebar-prog {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.sidebar-prog-top {
    display: flex;
    justify-content: space-between;
    font-size: 0.67rem;
    font-weight: 600;
    color: var(--text-2);
    margin-bottom: 7px;
}

.sidebar-prog-track {
    height: 6px;
    background: var(--surface-3);
    border-radius: 99px;
    overflow: hidden;
}

.sidebar-prog-fill {
    height: 100%;
    background: var(--brand);
    border-radius: 99px;
    transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-body {
    padding: 14px 16px;
}

.sidebar-label {
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-3);
    margin: 0 0 10px;
}

.exam-nav {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 5px;
    margin-bottom: 16px;
}

.exam-nav-dot {
    aspect-ratio: 1;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    user-select: none;
}

.exam-nav-dot:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: var(--brand-soft);
}

.exam-nav-dot.done {
    background: var(--green-soft);
    border-color: var(--green-border);
    color: var(--green);
}

.exam-nav-dot.res-correct {
    background: var(--green-soft);
    border-color: var(--green-border);
    color: var(--green);
}

.exam-nav-dot.res-wrong {
    background: var(--red-soft);
    border-color: rgba(220, 38, 38, 0.3);
    color: var(--red);
}

.exam-nav-dot.res-unanswered {
    background: var(--surface-3);
    border-color: var(--border-dark);
    color: var(--text-3);
}

.sidebar-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 14px 0;
}

.sidebar-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.sidebar-stat-card {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
}

.sidebar-stat-card-label {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-3);
    margin: 0 0 4px;
}

.sidebar-stat-card-val {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1;
}

.sidebar-stat-card-sub {
    font-size: 0.62rem;
    color: var(--text-3);
    margin-top: 3px;
}

.sidebar-stats-exam {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.sidebar-stats-results {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.sidebar-stats-results.visible {
    display: grid;
}

.sidebar-stats-exam.hidden {
    display: none;
}

/* ── Preguntas ── */
.questions-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.exam-questions-block {
    display: block;
}

.exam-questions-block.hidden {
    display: none;
}

.results-block {
    display: none;
}

.results-block.visible {
    display: block;
}

.q-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 26px;
    position: relative;
    transition: border-color 0.2s;
}

.q-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    bottom: 14px;
    width: 3.5px;
    background: var(--border-dark);
    border-radius: 0 4px 4px 0;
    transition: background 0.25s;
}

.q-card.answered {
    border-color: var(--green-border);
}

.q-card.answered::before {
    background: var(--green);
}

.q-card.res-correct {
    border-color: var(--green-border);
}

.q-card.res-correct::before {
    background: var(--green);
}

.q-card.res-wrong {
    border-color: rgba(220, 38, 38, 0.3);
}

.q-card.res-wrong::before {
    background: var(--red);
}

.q-card.res-unanswered {
    border-color: var(--border-dark);
}

.q-card.res-unanswered::before {
    background: var(--text-3);
}

.q-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.q-num-pill {
    background: var(--brand-soft);
    color: var(--brand);
    border: 1px solid var(--brand-border);
    border-radius: 7px;
    padding: 3px 10px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.q-pts {
    background: var(--amber-soft);
    color: var(--amber);
    border: 1px solid rgba(217, 119, 6, 0.25);
    border-radius: 99px;
    padding: 3px 10px;
    font-size: 0.68rem;
    font-weight: 700;
}

.q-result-badge {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    border-radius: 99px;
    padding: 4px 12px;
    font-size: 0.7rem;
    font-weight: 700;
    border: 1px solid;
}

.q-result-badge.correct {
    background: var(--green-soft);
    color: var(--green);
    border-color: var(--green-border);
}

.q-result-badge.wrong {
    background: var(--red-soft);
    color: var(--red);
    border-color: rgba(220, 38, 38, 0.3);
}

.q-result-badge.unanswered {
    background: var(--surface-3);
    color: var(--text-3);
    border-color: var(--border-dark);
}

.q-clear-btn {
    margin-left: auto;
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 7px;
    padding: 3px 10px;
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-3);
    cursor: pointer;
    font-family: "Plus Jakarta Sans", sans-serif;
    display: none;
    align-items: center;
    gap: 5px;
    transition: all 0.15s;
}

.q-clear-btn:hover {
    border-color: var(--red);
    color: var(--red);
    background: var(--red-soft);
}

.q-card.answered .q-clear-btn {
    display: inline-flex;
}

.q-text {
    font-size: 0.93rem;
    line-height: 1.65;
    color: var(--text);
    margin-bottom: 18px;
    font-weight: 400;
}

.q-img {
    display: block;
    width: 100%;
    min-height: 160px;
    max-height: 300px;
    object-fit: contain;
    border-radius: 10px;
    margin-bottom: 18px;
    border: 1px solid var(--border);
    background: var(--surface-2);
}

.options {
    display: grid;
    /* Flexible: hasta 3 columnas si el ancho alcanza (cada columna ocupa
       como mínimo 1/3 del contenedor), colapsando a menos si no cabe. */
    grid-template-columns: repeat(auto-fit, minmax(max(200px, (100% - 2 * 9px) / 3), 1fr));
    align-items: stretch;
    gap: 9px;
}

.options.single-col {
    grid-template-columns: 1fr;
}

.opt {
    display: flex;
    align-items: flex-start;
    gap: 11px;
    padding: 11px 14px;
    min-height: 64px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: var(--surface-2);
    text-align: left;
    width: 100%;
    transition:
        border-color 0.15s,
        background 0.15s;
    font-family: "Plus Jakarta Sans", sans-serif;
}

.opt:hover:not(.selected):not(.opt-correct):not(.opt-wrong) {
    border-color: var(--brand-border);
    background: var(--brand-soft);
}

.opt.selected {
    border-color: var(--opt-sel-border);
    background: var(--opt-sel-bg);
}

.opt.selected .opt-text {
    color: var(--opt-sel-text);
    font-weight: 600;
}

.opt.selected .opt-letter {
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
}

.opt.opt-correct {
    border-color: var(--green-border);
    background: var(--green-soft);
    cursor: default;
}

.opt.opt-correct .opt-text {
    color: var(--green);
    font-weight: 600;
}

.opt.opt-correct .opt-letter {
    background: var(--green-soft);
    border-color: var(--green-border);
    color: var(--green);
}

.opt.opt-wrong {
    border-color: rgba(220, 38, 38, 0.3);
    background: var(--red-soft);
    cursor: default;
}

.opt.opt-wrong .opt-text {
    color: var(--red);
    font-weight: 600;
}

.opt.opt-wrong .opt-letter {
    background: var(--red-soft);
    border-color: rgba(220, 38, 38, 0.3);
    color: var(--red);
}

.opt.opt-readonly {
    cursor: default;
}

.opt-letter {
    width: 27px;
    height: 27px;
    border-radius: 7px;
    border: 1.5px solid var(--border-dark);
    background: var(--surface);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-2);
    flex-shrink: 0;
    transition: all 0.15s;
}

.opt-body {
    flex: 1;
}

.opt-text {
    font-size: 0.84rem;
    line-height: 1.5;
    color: var(--text);
    padding-top: 4px;
    transition: color 0.15s;
}

.opt-img {
    display: block;
    width: 100%;
    min-height: 110px;
    max-height: 200px;
    object-fit: contain;
    border-radius: 7px;
    margin-top: 8px;
    border: 1px solid var(--border);
    background: var(--surface-2);
}

/* ── Resultados hero ── */
.results-hero {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    margin-bottom: 20px;
    text-align: center;
}

.results-hero-score {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
    letter-spacing: -0.03em;
}

.results-hero-score.approved {
    color: var(--green);
}

.results-hero-score.failed {
    color: var(--red);
}

.results-hero-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-3);
    margin-bottom: 18px;
}

.results-hero-verdict {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 22px;
    border-radius: 99px;
    font-size: 0.84rem;
    font-weight: 700;
    border: 1.5px solid;
    margin-bottom: 24px;
}

.results-hero-verdict.approved {
    background: var(--green-soft);
    color: var(--green);
    border-color: var(--green-border);
}

.results-hero-verdict.failed {
    background: var(--red-soft);
    color: var(--red);
    border-color: rgba(220, 38, 38, 0.3);
}

.results-stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 4px;
}

.results-stat {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 12px;
}

.results-stat-val {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1;
}

.results-stat-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-3);
    margin-top: 4px;
}

.results-section-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-3);
    margin: 24px 0 12px;
}

.resume-alert {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--amber-soft);
    border: 1px solid rgba(217, 119, 6, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 18px;
    margin-bottom: 14px;
    font-size: 0.79rem;
    color: var(--amber);
    font-weight: 600;
}

/* ── Footer ── */
.exam-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1.5px solid var(--border);
    padding: 13px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    z-index: 50;
}

.dark .exam-footer {
    background: rgba(17, 24, 39, 0.96);
}

.footer-exam {
    display: contents;
}

.footer-results {
    display: none;
}

.footer-results.visible {
    display: contents;
}

.footer-exam.hidden {
    display: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    border: 1.5px solid;
    font-family: "Plus Jakarta Sans", sans-serif;
    transition: all 0.15s;
}

.btn-abandon {
    background: transparent;
    border-color: rgba(220, 38, 38, 0.35);
    color: var(--red);
}

.btn-abandon:hover {
    background: var(--red-soft);
    border-color: var(--red);
}

.btn-submit {
    background: var(--brand);
    border-color: var(--brand);
    color: #ffffff !important;
}

.btn-submit:hover {
    background: var(--brand-dark);
    border-color: var(--brand-dark);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-preview-back {
    background: var(--amber-soft);
    border-color: rgba(217, 119, 6, 0.35);
    color: var(--amber);
}

.btn-preview-back:hover {
    opacity: 0.85;
}

.btn-back-course {
    background: var(--surface-2);
    border-color: var(--border-dark);
    color: var(--text-2);
}

.btn-back-course:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: var(--brand-soft);
}

.footer-info {
    font-size: 0.73rem;
    color: var(--text-2);
    text-align: center;
    font-weight: 500;
}

/* ── Overlay Procesando ── */
.processing-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(17, 24, 39, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.processing-overlay.visible {
    display: flex;
}

.processing-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 56px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.18);
    text-align: center;
}

.processing-spinner {
    width: 44px;
    height: 44px;
    border: 3.5px solid var(--brand-soft);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.processing-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

.processing-sub {
    font-size: 0.78rem;
    color: var(--text-3);
    font-weight: 500;
    margin: 0;
}

@media (max-width: 800px) {
    .exam-body {
        grid-template-columns: 1fr;
    }

    .exam-sidebar {
        position: static;
    }

    .q-card {
        padding: 16px 18px;
    }

    .options {
        grid-template-columns: 1fr;
    }

    .q-img {
        max-height: 260px;
    }

    .opt-img {
        max-height: 160px;
    }

    .exam-footer {
        padding: 10px 16px;
    }

    .results-stats-row {
        grid-template-columns: 1fr 1fr;
    }

    .processing-card {
        padding: 32px 28px;
        margin: 0 16px;
    }
}

@media (max-width: 480px) {
    .exam-nav {
        grid-template-columns: repeat(6, 1fr);
    }

    .results-stats-row {
        grid-template-columns: 1fr;
    }
}