/* =========================================================
   Acupuncture Channel Quiz
   File: /acupuncture/channel-quiz/channel-quiz.css
   ========================================================= */

.acupuncture-channel-quiz-page {
    --acq-primary: #0f766e;
    --acq-primary-dark: #115e59;
    --acq-primary-light: #ccfbf1;
    --acq-primary-soft: #f0fdfa;

    --acq-success: #15803d;
    --acq-success-dark: #166534;
    --acq-success-light: #dcfce7;

    --acq-error: #b91c1c;
    --acq-error-dark: #991b1b;
    --acq-error-light: #fee2e2;

    --acq-warning: #a16207;
    --acq-warning-light: #fef3c7;

    --acq-text: #172033;
    --acq-muted: #667085;
    --acq-border: #d9e2ec;
    --acq-background: #f6f9fc;
    --acq-card: #ffffff;

    --acq-shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.07);
    --acq-shadow-md: 0 14px 40px rgba(15, 23, 42, 0.11);
    --acq-shadow-lg: 0 24px 65px rgba(15, 23, 42, 0.15);

    color: var(--acq-text);
    font-family: "Inter", sans-serif;
}


/* =========================================================
   General page adjustments
   ========================================================= */

.acupuncture-channel-quiz-page *,
.acupuncture-channel-quiz-page *::before,
.acupuncture-channel-quiz-page *::after {
    box-sizing: border-box;
}

.acupuncture-channel-quiz-page button,
.acupuncture-channel-quiz-page select {
    font: inherit;
}

.acupuncture-channel-quiz-page [hidden] {
    display: none !important;
}

.acupuncture-channel-quiz-page .page-header-ui-title {
    max-width: 760px;
}

.acupuncture-channel-quiz-page .page-header-ui-text {
    max-width: 680px;
}


/* =========================================================
   Main quiz section
   ========================================================= */

.acq-section {
    position: relative;
    padding: 5rem 1.5rem;
    background:
        radial-gradient(
            circle at top left,
            rgba(20, 184, 166, 0.12),
            transparent 34rem
        ),
        linear-gradient(
            180deg,
            #ffffff 0%,
            var(--acq-background) 100%
        );
}

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


/* =========================================================
   Quiz mode selector
   ========================================================= */

.acq-topic-area {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
    padding: 1.25rem 1.4rem;
    background: var(--acq-card);
    border: 1px solid var(--acq-border);
    border-radius: 1rem;
    box-shadow: var(--acq-shadow-sm);
}

.acq-topic-label {
    margin: 0;
    color: var(--acq-text);
    font-size: 0.95rem;
    font-weight: 700;
}

.acq-topic-select {
    width: min(100%, 360px);
    min-height: 48px;
    padding: 0.75rem 2.75rem 0.75rem 1rem;
    color: var(--acq-text);
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
    background-color: #ffffff;
    border: 1px solid #b8c4d1;
    border-radius: 0.75rem;
    cursor: pointer;
    transition:
        border-color 160ms ease,
        box-shadow 160ms ease,
        transform 160ms ease;
}

.acq-topic-select:hover {
    border-color: var(--acq-primary);
}

.acq-topic-select:focus {
    outline: none;
    border-color: var(--acq-primary);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.14);
}


/* =========================================================
   Progress area
   ========================================================= */

.acq-progress-area {
    margin-bottom: 1.5rem;
    padding: 1.15rem 1.4rem;
    background: var(--acq-card);
    border: 1px solid var(--acq-border);
    border-radius: 1rem;
    box-shadow: var(--acq-shadow-sm);
}

.acq-progress-text {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.7rem;
    color: var(--acq-muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.acq-progress-track {
    width: 100%;
    height: 12px;
    overflow: hidden;
    background: #e5ebf1;
    border-radius: 999px;
}

.acq-progress-bar {
    width: 5%;
    height: 100%;
    background: linear-gradient(
        90deg,
        var(--acq-primary),
        #14b8a6
    );
    border-radius: inherit;
    transition: width 320ms ease;
}


/* =========================================================
   Practice card
   ========================================================= */

.acq-card {
    position: relative;
    overflow: hidden;
    padding: clamp(1.4rem, 4vw, 2.5rem);
    background: var(--acq-card);
    border: 1px solid var(--acq-border);
    border-radius: 1.35rem;
    box-shadow: var(--acq-shadow-md);
}

.acq-card::before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(
        90deg,
        var(--acq-primary),
        #2dd4bf
    );
    content: "";
}

.acq-card-heading {
    margin-bottom: 1.5rem;
}

.acq-card-label {
    margin: 0 0 0.55rem;
    color: var(--acq-primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.acq-card-heading h2 {
    margin: 0;
    color: var(--acq-text);
    font-size: clamp(1.45rem, 3vw, 2rem);
    font-weight: 800;
    line-height: 1.25;
}

.acq-card-instructions {
    max-width: 760px;
    margin: 0.75rem 0 0;
    color: var(--acq-muted);
    font-size: 0.97rem;
    line-height: 1.65;
}


/* =========================================================
   Question content
   ========================================================= */

.acq-problem {
    margin-bottom: 1.5rem;
    padding: clamp(1.2rem, 3vw, 1.65rem);
    color: var(--acq-text);
    font-size: clamp(1.05rem, 2.5vw, 1.25rem);
    font-weight: 650;
    line-height: 1.7;
    background: var(--acq-primary-soft);
    border: 1px solid #b8eee6;
    border-left: 5px solid var(--acq-primary);
    border-radius: 0.9rem;
}


/* =========================================================
   Answer choices
   ========================================================= */

.acq-answer-fieldset {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.acq-answer-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.acq-answer-option {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 76px;
    padding: 1rem 1.1rem;
    color: var(--acq-text);
    font-weight: 650;
    line-height: 1.45;
    text-align: left;
    background: #ffffff;
    border: 2px solid var(--acq-border);
    border-radius: 0.9rem;
    cursor: pointer;
    user-select: none;
    transition:
        border-color 160ms ease,
        background-color 160ms ease,
        box-shadow 160ms ease,
        transform 160ms ease;
}

.acq-answer-option:hover {
    border-color: #76cfc4;
    background: var(--acq-primary-soft);
    transform: translateY(-2px);
    box-shadow: var(--acq-shadow-sm);
}

.acq-answer-option:focus-visible {
    outline: none;
    border-color: var(--acq-primary);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.16);
}

.acq-answer-option.is-selected {
    color: var(--acq-primary-dark);
    background: var(--acq-primary-light);
    border-color: var(--acq-primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
}

.acq-answer-option.is-correct {
    color: var(--acq-success-dark);
    background: var(--acq-success-light);
    border-color: var(--acq-success);
}

.acq-answer-option.is-incorrect {
    color: var(--acq-error-dark);
    background: var(--acq-error-light);
    border-color: var(--acq-error);
}

.acq-answer-option:disabled,
.acq-answer-option.is-disabled {
    cursor: default;
    transform: none;
}

.acq-answer-option:not(.is-correct):not(.is-incorrect):disabled,
.acq-answer-option.is-disabled:not(.is-correct):not(.is-incorrect) {
    opacity: 0.72;
}

.acq-answer-letter {
    display: inline-grid;
    flex: 0 0 auto;
    width: 2rem;
    height: 2rem;
    margin-right: 0.8rem;
    place-items: center;
    color: var(--acq-primary-dark);
    font-size: 0.82rem;
    font-weight: 800;
    background: var(--acq-primary-light);
    border-radius: 50%;
}

.acq-answer-text {
    flex: 1;
}


/* Support radio-based choices if the JavaScript uses labels */

.acq-answer-choice {
    position: relative;
}

.acq-answer-choice input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
}

.acq-answer-choice label {
    display: flex;
    align-items: center;
    min-height: 76px;
    margin: 0;
    padding: 1rem 1.1rem;
    color: var(--acq-text);
    font-weight: 650;
    line-height: 1.45;
    background: #ffffff;
    border: 2px solid var(--acq-border);
    border-radius: 0.9rem;
    cursor: pointer;
    transition:
        border-color 160ms ease,
        background-color 160ms ease,
        box-shadow 160ms ease,
        transform 160ms ease;
}

.acq-answer-choice label:hover {
    border-color: #76cfc4;
    background: var(--acq-primary-soft);
    transform: translateY(-2px);
    box-shadow: var(--acq-shadow-sm);
}

.acq-answer-choice input:focus-visible + label {
    border-color: var(--acq-primary);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.16);
}

.acq-answer-choice input:checked + label {
    color: var(--acq-primary-dark);
    background: var(--acq-primary-light);
    border-color: var(--acq-primary);
}


/* =========================================================
   Controls
   ========================================================= */

.acq-controls {
    display: flex;
    justify-content: flex-end;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.acq-submit-button {
    min-width: 170px;
    min-height: 50px;
    padding: 0.8rem 1.25rem;
    color: #ffffff;
    font-size: 0.96rem;
    font-weight: 750;
    line-height: 1.2;
    background: var(--acq-primary);
    border: 0;
    border-radius: 0.75rem;
    cursor: pointer;
    box-shadow: 0 7px 20px rgba(15, 118, 110, 0.22);
    transition:
        background-color 160ms ease,
        box-shadow 160ms ease,
        transform 160ms ease;
}

.acq-submit-button:hover:not(:disabled) {
    background: var(--acq-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(15, 118, 110, 0.28);
}

.acq-submit-button:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 4px rgba(15, 118, 110, 0.2),
        0 7px 20px rgba(15, 118, 110, 0.22);
}

.acq-submit-button:disabled {
    color: #8a96a3;
    background: #dce3e9;
    cursor: not-allowed;
    box-shadow: none;
}


/* =========================================================
   Feedback
   ========================================================= */

.acq-feedback {
    margin-top: 1.2rem;
    padding: 0.9rem 1rem;
    color: var(--acq-muted);
    font-size: 0.94rem;
    font-weight: 650;
    line-height: 1.5;
    text-align: center;
    background: #f7f9fb;
    border: 1px solid var(--acq-border);
    border-radius: 0.75rem;
}

.acq-feedback.is-correct,
.acq-feedback.correct {
    color: var(--acq-success-dark);
    background: var(--acq-success-light);
    border-color: #86efac;
}

.acq-feedback.is-incorrect,
.acq-feedback.incorrect {
    color: var(--acq-error-dark);
    background: var(--acq-error-light);
    border-color: #fca5a5;
}

.acq-feedback.is-warning,
.acq-feedback.warning {
    color: var(--acq-warning);
    background: var(--acq-warning-light);
    border-color: #fcd34d;
}


/* =========================================================
   Explanation panel
   ========================================================= */

.acq-explanation {
    margin-top: 1.25rem;
    padding: 1.25rem 1.3rem;
    background: #f8fafc;
    border: 1px solid var(--acq-border);
    border-radius: 0.9rem;
    animation: acqFadeUp 220ms ease both;
}

.acq-explanation-label {
    margin: 0 0 0.4rem;
    color: var(--acq-primary);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.acq-explanation h3 {
    margin: 0;
    color: var(--acq-text);
    font-size: 1.15rem;
    font-weight: 800;
}

.acq-correct-answer {
    margin-top: 0.8rem;
    padding: 0.85rem 1rem;
    color: var(--acq-success-dark);
    font-size: 1rem;
    font-weight: 750;
    line-height: 1.5;
    background: var(--acq-success-light);
    border-left: 4px solid var(--acq-success);
    border-radius: 0.65rem;
}

.acq-explanation > p:last-child {
    margin: 0.9rem 0 0;
    color: var(--acq-muted);
    line-height: 1.65;
}


/* =========================================================
   Current round statistics
   ========================================================= */

.acq-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.acq-stat {
    padding: 1.15rem 1rem;
    text-align: center;
    background: var(--acq-card);
    border: 1px solid var(--acq-border);
    border-radius: 0.9rem;
    box-shadow: var(--acq-shadow-sm);
}

.acq-stat span {
    display: block;
    margin-bottom: 0.3rem;
    color: var(--acq-muted);
    font-size: 0.76rem;
    font-weight: 750;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.acq-stat strong {
    display: block;
    color: var(--acq-text);
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.2;
}


/* =========================================================
   Results screen
   ========================================================= */

.acq-results {
    margin-top: 1.5rem;
    padding: clamp(1.5rem, 4vw, 2.5rem);
    text-align: center;
    background: var(--acq-card);
    border: 1px solid var(--acq-border);
    border-radius: 1.25rem;
    box-shadow: var(--acq-shadow-md);
    animation: acqFadeUp 260ms ease both;
}

.acq-results-label {
    margin: 0 0 0.4rem;
    color: var(--acq-primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.acq-results h2 {
    margin: 0;
    color: var(--acq-text);
    font-size: clamp(1.65rem, 4vw, 2.35rem);
    font-weight: 850;
}

.acq-results > p:not(.acq-results-label) {
    max-width: 620px;
    margin: 0.75rem auto 0;
    color: var(--acq-muted);
    line-height: 1.65;
}

.acq-results-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin: 1.75rem 0;
}

.acq-result-item {
    padding: 1.2rem 0.9rem;
    background: #f8fafc;
    border: 1px solid var(--acq-border);
    border-radius: 0.85rem;
}

.acq-result-item span {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--acq-muted);
    font-size: 0.75rem;
    font-weight: 750;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.acq-result-item strong {
    display: block;
    color: var(--acq-text);
    font-size: 1.65rem;
    font-weight: 850;
}

.acq-result-accuracy {
    background: var(--acq-primary-soft);
    border-color: #99e3da;
}

.acq-results .acq-submit-button {
    margin-inline: auto;
}


/* =========================================================
   Information cards
   ========================================================= */

.acq-info {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    padding-top: 5rem;
    padding-bottom: 5rem;
}

.acq-info article {
    padding: 1.6rem;
    background: #ffffff;
    border: 1px solid var(--acq-border);
    border-radius: 1rem;
    box-shadow: var(--acq-shadow-sm);
}

.acq-info h2 {
    margin: 0 0 0.75rem;
    color: var(--acq-text);
    font-size: 1.16rem;
    font-weight: 800;
    line-height: 1.35;
}

.acq-info p {
    margin: 0;
    color: var(--acq-muted);
    line-height: 1.7;
}


/* =========================================================
   SEO content section
   ========================================================= */

.acq-seo-section {
    padding: 5rem 0;
    background: #f7fafc;
    border-top: 1px solid #e4eaf0;
}

.acq-seo-content {
    max-width: 860px;
    margin: 0 auto;
}

.acq-seo-content h2 {
    margin: 0 0 1rem;
    color: var(--acq-text);
    font-size: clamp(1.75rem, 4vw, 2.45rem);
    font-weight: 850;
    line-height: 1.25;
}

.acq-seo-content h3 {
    margin: 2rem 0 0.65rem;
    color: var(--acq-text);
    font-size: 1.25rem;
    font-weight: 800;
}

.acq-seo-content p {
    margin: 0 0 1rem;
    color: var(--acq-muted);
    line-height: 1.8;
}

.acq-seo-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-top: 2rem;
}

.acq-resource-link {
    color: var(--acq-primary-dark);
    font-weight: 700;
    text-decoration: none;
}

.acq-resource-link:hover {
    color: var(--acq-primary);
    text-decoration: underline;
    text-underline-offset: 4px;
}


/* =========================================================
   Animations
   ========================================================= */

@keyframes acqFadeUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* =========================================================
   Tablet layout
   ========================================================= */

@media (max-width: 900px) {

    .acq-section {
        padding: 4rem 1.25rem;
    }

    .acq-answer-grid {
        grid-template-columns: 1fr;
    }

    .acq-stats,
    .acq-results-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .acq-info {
        grid-template-columns: 1fr;
    }

}


/* =========================================================
   Mobile layout
   ========================================================= */

@media (max-width: 600px) {

    .acq-section {
        padding: 3rem 0.9rem;
    }

    .acq-topic-area {
        align-items: stretch;
        flex-direction: column;
        padding: 1rem;
    }

    .acq-topic-select {
        width: 100%;
    }

    .acq-progress-area {
        padding: 1rem;
    }

    .acq-card {
        padding: 1.3rem 1rem;
        border-radius: 1rem;
    }

    .acq-problem {
        padding: 1.05rem;
        font-size: 1rem;
    }

    .acq-answer-option,
    .acq-answer-choice label {
        min-height: 68px;
        padding: 0.9rem;
    }

    .acq-controls {
        flex-direction: column;
    }

    .acq-submit-button {
        width: 100%;
        min-width: 0;
    }

    .acq-stats,
    .acq-results-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.75rem;
    }

    .acq-stat,
    .acq-result-item {
        padding: 1rem 0.6rem;
    }

    .acq-stat strong,
    .acq-result-item strong {
        font-size: 1.35rem;
    }

    .acq-info {
        padding-top: 3.5rem;
        padding-bottom: 3.5rem;
    }

    .acq-seo-section {
        padding: 3.5rem 0;
    }

    .acq-seo-section .container {
        padding-right: 1.25rem !important;
        padding-left: 1.25rem !important;
    }

    .acq-seo-links {
        align-items: stretch;
        flex-direction: column;
    }

    .acq-seo-links .btn,
    .acq-resource-link {
        width: 100%;
        text-align: center;
    }

}


/* =========================================================
   Small mobile layout
   ========================================================= */

@media (max-width: 390px) {

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

}


/* =========================================================
   Reduced-motion accessibility
   ========================================================= */

@media (prefers-reduced-motion: reduce) {

    .acupuncture-channel-quiz-page *,
    .acupuncture-channel-quiz-page *::before,
    .acupuncture-channel-quiz-page *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

}