/* ==========================================================================
   BH Quiz Engine - Styles
   Uses ACSS custom properties where available, with sensible fallbacks.
   ========================================================================== */

/* ---------- Container ---------- */
.bh-quiz {
    --dq-radius: var(--radius-m, 8px);
    --dq-gap: var(--space-m, 1.5rem);
    --dq-padding: var(--space-l, 2rem);
    --dq-font: var(--f-family, inherit);
    --dq-text: #1a1a1a;
    --dq-text-light: #ffffff;
    --dq-bg: #ffffff;
    --dq-bg-alt: #f5f7fa;
    --dq-primary: var(--primary, #2271b1);
    --dq-primary-hover: var(--primary-hover, #1a5a8e);
    --dq-success: var(--success, #46a758);
    --dq-success-light: var(--success-light, #e6f4ea);
    --dq-danger: var(--danger, #dc3545);
    --dq-danger-light: var(--danger-light, #fce8e8);
    --dq-warning: var(--warning, #f0ad4e);
    --dq-warning-light: var(--warning-light, #fff8e6);
    --dq-border: #d0d5dd;
    --dq-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --dq-transition: 0.25s ease;

    font-family: var(--dq-font);
    color: var(--dq-text);
    max-width: 800px;
    margin: 0 auto;
}

/* ---------- Progress Bar ---------- */
.bh-quiz__progress {
    margin-block-end: var(--dq-gap);
}

.bh-quiz__step-label {
    font-size: var(--f-size-xs, 0.85rem);
    font-weight: 600;
    margin-block-end: 0.4rem;
    color: var(--dq-text);
}

.bh-quiz__progress-bar {
    width: 100%;
    height: 8px;
    background: var(--dq-border);
    border-radius: 99px;
    overflow: hidden;
}

.bh-quiz__progress-fill {
    height: 100%;
    background: var(--dq-primary);
    border-radius: 99px;
    transition: width 0.4s ease;
    position: relative;
}

.bh-quiz__progress-text {
    font-size: var(--f-size-xs, 0.75rem);
    font-weight: 700;
    color: var(--dq-text-light);
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    line-height: 1;
    display: none; /* shown via JS when bar is wide enough */
}

/* ---------- Question Card ---------- */
.bh-quiz__question {
    background: var(--dq-bg);
    border: 1px solid var(--dq-border);
    border-radius: var(--dq-radius);
    padding: var(--dq-padding);
    box-shadow: var(--dq-shadow);
}

.bh-quiz__question-text {
    font-size: var(--f-size-m, 1.1rem);
    font-weight: 600;
    margin-block-end: var(--dq-gap);
    line-height: 1.5;
}

/* ---------- Answers ---------- */
.bh-quiz__answers {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.bh-quiz__answer {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border: 2px solid var(--dq-border);
    border-radius: var(--dq-radius);
    cursor: pointer;
    background: transparent;
    transition: border-color var(--dq-transition), background var(--dq-transition), transform var(--dq-transition);
    user-select: none;
    line-height: 1.4;
}

.bh-quiz__answer:hover:not(.bh-quiz__answer--disabled) {
    border-color: var(--dq-primary);
}

.bh-quiz__answer--selected {
    border-color: var(--dq-primary);
}

.bh-quiz__answer--correct {
    border-color: var(--c-correct, #BDE4A7) !important;
    background: var(--c-correct, #BDE4A7) !important;
}

.bh-quiz__answer--wrong {
    border-color: var(--c-warning, #FDC700) !important;
    background: var(--c-warning, #FDC700) !important;
}

.bh-quiz__answer--disabled {
    cursor: default;
    opacity: 0.7;
}

.bh-quiz__answer--disabled.bh-quiz__answer--correct,
.bh-quiz__answer--disabled.bh-quiz__answer--wrong {
    opacity: 1;
}

.bh-quiz__answer-text {
    flex: 1;
}

/* ---------- Feedback Banner ---------- */
.bh-quiz__feedback {
    margin-block-start: var(--dq-gap);
    padding: 0.85rem 1.25rem;
    border-radius: var(--dq-radius);
    font-weight: 600;
    text-align: center;
    font-size: var(--f-size-s, 0.95rem);
    animation: bhQuizFadeIn 0.3s ease;
}

.bh-quiz__feedback--correct {
    background: var(--c-correct, #BDE4A7);
    color: var(--dq-text);
    border: 1px solid var(--c-correct, #BDE4A7);
}

.bh-quiz__feedback--wrong {
    background: var(--c-warning, #FDC700);
    color: var(--dq-text);
    border: 1px solid var(--c-warning, #FDC700);
}

.bh-quiz__correct-answer {
    margin-block-start: 0.5rem;
    font-weight: 400;
    font-size: var(--f-size-xs, 0.85rem);
}

/* ---------- Navigation ---------- */
.bh-quiz__nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-block-start: var(--dq-gap);
    gap: 1rem;
}

.bh-quiz__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: var(--dq-radius);
    font-size: var(--f-size-s, 0.95rem);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--dq-transition), transform var(--dq-transition);
    font-family: inherit;
    line-height: 1.2;
}

.bh-quiz__btn:active {
    transform: scale(0.97);
}

.bh-quiz__btn--primary {
    background: var(--dq-primary) !important;
    color: var(--dq-text-light) !important;
}

.bh-quiz__btn--primary:hover {
    background: var(--dq-primary-hover) !important;
}

.bh-quiz__btn--secondary {
    background: transparent;
    color: var(--dq-primary);
    border: 2px solid var(--dq-primary);
}

.bh-quiz__btn--secondary:hover {
    background: var(--dq-bg-alt);
}

.bh-quiz__btn--ghost {
    background: transparent;
    color: var(--dq-text);
    border: 1px solid var(--dq-border);
}

.bh-quiz__btn--ghost:hover {
    background: var(--dq-bg-alt);
}

.bh-quiz__btn[disabled] {
    opacity: 0.4;
    cursor: not-allowed;
}

.bh-quiz__nav-spacer {
    flex: 1;
}

/* ---------- Results Screen ---------- */
.bh-quiz__results {
    animation: bhQuizFadeIn 0.4s ease;
}

/* Score block */
.bh-quiz__score {
    text-align: center;
    padding: var(--dq-padding);
    background: var(--dq-bg);
    border-radius: var(--dq-radius);
    border: 1px solid var(--dq-border);
    box-shadow: var(--dq-shadow);
    margin-block-end: var(--dq-gap);
}

.bh-quiz__score-title {
    font-size: var(--f-size-xl, 1.75rem);
    font-weight: 700;
    margin-block-end: 0.75rem;
}

.bh-quiz__score-value {
    font-size: var(--f-size-xxl, 3rem);
    font-weight: 800;
    line-height: 1;
    margin-block-end: 0.5rem;
}

.bh-quiz__score-value--good {
    color: var(--dq-success);
}

.bh-quiz__score-value--ok {
    color: var(--dq-warning);
}

.bh-quiz__score-value--bad {
    color: var(--dq-danger);
}

.bh-quiz__score-text {
    font-size: var(--f-size-s, 0.95rem);
    color: var(--text-medium, #555);
}

/* Percentage bar on results */
.bh-quiz__score-bar {
    width: 100%;
    max-width: 400px;
    height: 12px;
    background: var(--dq-border);
    border-radius: 99px;
    overflow: hidden;
    margin: 1rem auto 0;
}

.bh-quiz__score-bar-fill {
    height: 100%;
    border-radius: 99px;
    transition: width 1s ease;
}

/* Tier feedback */
.bh-quiz__tier {
    text-align: center;
    padding: 1.5rem var(--dq-padding);
    background: var(--dq-bg-alt);
    border-radius: var(--dq-radius);
    margin-block-end: var(--dq-gap);
    border: 1px solid var(--dq-border);
}

.bh-quiz__tier-title {
    font-size: var(--f-size-l, 1.35rem);
    font-weight: 700;
    margin-block-end: 0.5rem;
}

.bh-quiz__tier-text {
    font-size: var(--f-size-s, 0.95rem);
    line-height: 1.6;
}

/* Question review */
.bh-quiz__review {
    margin-block-end: var(--dq-gap);
}

.bh-quiz__review-title {
    font-size: var(--f-size-l, 1.25rem);
    font-weight: 700;
    margin-block-end: 1rem;
}

.bh-quiz__review-item {
    padding: 1rem 1.25rem;
    border: 1px solid var(--dq-border);
    border-radius: var(--dq-radius);
    margin-block-end: 0.75rem;
    background: var(--dq-bg);
}

.bh-quiz__review-question {
    font-weight: 600;
    margin-block-end: 0.5rem;
}

.bh-quiz__review-answer {
    font-size: var(--f-size-s, 0.9rem);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bh-quiz__review-answer + .bh-quiz__review-answer {
    margin-block-start: 0.25rem;
}

.bh-quiz__review-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.bh-quiz__review-icon--correct {
    color: var(--dq-success);
}

.bh-quiz__review-icon--wrong {
    color: var(--dq-danger);
}

/* Further reading links */
.bh-quiz__links {
    margin-block-end: var(--dq-gap);
}

.bh-quiz__links-title {
    font-size: var(--f-size-l, 1.25rem);
    font-weight: 700;
    margin-block-end: 1rem;
}

.bh-quiz__links-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bh-quiz__link-item a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--dq-border);
    border-radius: var(--dq-radius);
    text-decoration: none;
    color: var(--dq-primary);
    font-weight: 500;
    transition: background var(--dq-transition), border-color var(--dq-transition);
}

.bh-quiz__link-item a:hover {
    background: var(--dq-bg-alt);
    border-color: var(--dq-primary);
}

.bh-quiz__link-item a::before {
    content: '\2192';
    font-size: 1.1rem;
}

/* Result actions */
.bh-quiz__actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-block-start: var(--dq-gap);
}

/* ---------- Animations ---------- */
@keyframes bhQuizFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
    .bh-quiz__question {
        padding: 1.25rem;
    }

    .bh-quiz__score {
        padding: 1.25rem;
    }

    .bh-quiz__score-value {
        font-size: 2.5rem;
    }

    .bh-quiz__btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .bh-quiz__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .bh-quiz__actions .bh-quiz__btn {
        justify-content: center;
    }
}