/* Riddle Up — Riddle Quiz (landing + play screens)
   Session-driven, timed multiple-choice game (see RiddleQuizController,
   riddle-quiz.js). Mobile-first, centered single-column game container,
   same visual language as the Puzzles game screen (pz-*) but its own
   `rq-` namespace since scoring/timer/streak UI is unique to this game.
   Uses the `--surface-*` dark-theme-safe tokens defined in ../site.css
   (loaded sitewide). Loaded on the landing + play pages via
   RiddleQuizController (see \Assets::add). */

.rq-hero {
    background: linear-gradient(120deg, rgba(var(--indigo-rgb), .07), rgba(var(--pink-rgb), .06));
}

.rq-hero-subtitle {
    color: var(--body-color);
    opacity: .7;
    font-size: .95rem;
    max-width: 46rem;
}

/* ---- Landing difficulty picker ---- */
.rq-diff-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: .35rem;
    padding: 1.5rem 1.25rem;
    border-radius: 1.1rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    color: var(--body-color);
    text-align: center;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

a.rq-diff-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--surface-hover-shadow);
    color: var(--body-color);
}

.rq-diff-label {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: .35rem;
}

.rq-diff-card--easy .rq-diff-label { color: rgb(var(--success-rgb)); }
.rq-diff-card--medium .rq-diff-label { color: rgb(var(--warning-rgb)); }
.rq-diff-card--hard .rq-diff-label { color: rgb(var(--danger-rgb)); }
.rq-diff-card--expert .rq-diff-label { color: var(--indigo); }

.rq-diff-meta {
    font-size: .8125rem;
    opacity: .7;
}

.rq-diff-cta {
    margin-top: .75rem;
    font-weight: 600;
    font-size: .875rem;
    color: var(--indigo);
}

.rq-diff-card--empty {
    opacity: .65;
    align-items: center;
    justify-content: center;
}

.rq-diff-badge {
    margin-top: .5rem;
    font-size: .8125rem;
    font-style: italic;
    opacity: .75;
}

.rq-info-card {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: .9rem;
    background: var(--surface-muted-bg);
}

.rq-info-row {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .875rem;
    opacity: .85;
}

/* ---- Game shell ---- */
.rq-game {
    max-width: 40rem;
    margin: 0 auto;
    padding: 1rem 0 3rem;
}

.rq-screen { width: 100%; }

.rq-back-link {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-weight: 600;
    font-size: .875rem;
    color: var(--body-color);
    text-decoration: none;
    margin-bottom: 1rem;
}

.rq-back-link:hover { color: var(--indigo); }

/* ---- Start screen ---- */
.rq-start-card {
    max-width: 28rem;
    margin: 1rem auto;
    padding: 2.5rem 1.75rem;
    border-radius: 1.25rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    box-shadow: var(--surface-hover-shadow);
}

.rq-start-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.75rem;
    height: 3.75rem;
    border-radius: 50%;
    background: rgba(var(--indigo-rgb), .12);
    color: var(--indigo);
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.rq-start-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: .25rem;
}

.rq-start-tagline {
    opacity: .7;
    margin-bottom: 1.5rem;
}

.rq-start-meta {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    padding: 1rem 1.25rem;
    border-radius: .9rem;
    background: var(--surface-muted-bg);
    margin-bottom: 1.25rem;
}

.rq-start-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: .925rem;
}

.rq-start-meta-row span { opacity: .65; }

.rq-start-note {
    font-size: .875rem;
    opacity: .8;
    margin-bottom: .35rem;
    text-align: left;
}

.rq-start-btn {
    width: 100%;
    margin-top: 1rem;
    font-weight: 700;
    min-height: 2.9rem;
}

/* ---- Game header ---- */
.rq-game-header {
    margin-bottom: 1rem;
}

.rq-exit-btn {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    background: none;
    border: none;
    padding: .4rem .25rem;
    min-height: 2.75rem;
    font-weight: 600;
    font-size: .875rem;
    color: var(--body-color);
}

.rq-game-title {
    font-weight: 700;
    font-size: .95rem;
    opacity: .7;
}

.rq-header-score {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    font-weight: 700;
    font-size: .95rem;
    color: var(--indigo);
}

/* ---- Progress ---- */
.rq-progress-row {
    margin-bottom: .4rem;
}

.rq-progress-label {
    font-weight: 600;
    font-size: .8125rem;
}

.rq-progress-percent {
    font-weight: 600;
    font-size: .8125rem;
    opacity: .6;
}

.rq-progress {
    height: .5rem;
    border-radius: 50rem;
}

.rq-progress .progress-bar {
    transition: width .35s ease;
}

/* ---- Difficulty badge + timer ---- */
.rq-badge {
    display: inline-block;
    padding: .3rem .9rem;
    border-radius: 50rem;
    font-weight: 700;
    font-size: .75rem;
    letter-spacing: .04em;
    background: rgba(var(--indigo-rgb), .14);
    color: var(--indigo);
}

.rq-timer {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-weight: 700;
    font-size: 1.25rem;
    padding: .25rem .8rem;
    border-radius: 50rem;
    background: var(--surface-muted-bg);
    color: var(--body-color);
    font-variant-numeric: tabular-nums;
}

.rq-timer--warning {
    background: rgba(var(--warning-rgb), .16);
    color: rgb(var(--warning-rgb));
}

.rq-timer--critical {
    background: rgba(var(--danger-rgb), .16);
    color: rgb(var(--danger-rgb));
}

@media (prefers-reduced-motion: no-preference) {
    .rq-timer--critical {
        animation: rq-pulse 1s ease-in-out infinite;
    }
}

@keyframes rq-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .55; }
}

/* ---- Error banner ---- */
.rq-error {
    text-align: center;
    padding: .9rem 1.1rem;
    border-radius: .9rem;
    background: rgba(var(--danger-rgb), .1);
    border: 1px solid rgba(var(--danger-rgb), .3);
    margin-bottom: 1rem;
}

.rq-error p {
    margin-bottom: .6rem;
    font-size: .9rem;
}

/* ---- Riddle card ---- */
.rq-riddle-card {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    box-shadow: var(--surface-hover-shadow);
    padding: 1.75rem 1.5rem;
    margin-bottom: 1.25rem;
    text-align: center;
}

.rq-riddle-text {
    margin: 0;
    font-size: clamp(1.125rem, 1rem + 1vw, 1.4rem);
    font-weight: 600;
    line-height: 1.55;
    white-space: pre-line;
}

/* ---- Options ---- */
.rq-options {
    display: flex;
    flex-direction: column;
    gap: .65rem;
    margin-bottom: 1rem;
}

.rq-option {
    display: flex;
    align-items: center;
    gap: .75rem;
    width: 100%;
    min-height: 3.25rem;
    padding: .875rem 1rem;
    border-radius: .9rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    color: var(--body-color);
    text-align: left;
    transition: border-color .15s ease, background-color .15s ease, transform .15s ease;
}

.rq-option:hover:not(:disabled) {
    border-color: rgba(var(--indigo-rgb), .4);
    transform: translateY(-1px);
}

.rq-option:focus-visible {
    outline: .15rem solid var(--indigo);
    outline-offset: .1rem;
}

.rq-option:disabled { cursor: default; }

.rq-option-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
    border-radius: .6rem;
    background: rgba(var(--indigo-rgb), .12);
    color: var(--indigo);
    font-weight: 700;
    font-size: .875rem;
}

.rq-option-text {
    flex: 1;
    font-size: .95rem;
}

.rq-option-icon {
    font-size: 1.15rem;
    flex-shrink: 0;
}

.rq-option--selected {
    border-color: var(--indigo);
}

.rq-option--correct {
    border-color: rgb(var(--success-rgb));
    background: rgba(var(--success-rgb), .1);
}

.rq-option--correct .rq-option-badge {
    background: rgb(var(--success-rgb));
    color: var(--white);
}

.rq-option--correct .rq-option-icon { color: rgb(var(--success-rgb)); }

.rq-option--wrong {
    border-color: rgb(var(--danger-rgb));
    background: rgba(var(--danger-rgb), .08);
}

.rq-option--wrong .rq-option-badge {
    background: rgb(var(--danger-rgb));
    color: var(--white);
}

.rq-option--wrong .rq-option-icon { color: rgb(var(--danger-rgb)); }

/* ---- Hint ---- */
.rq-secondary-actions {
    display: flex;
    justify-content: center;
    margin-bottom: .75rem;
}

.rq-text-btn {
    background: none;
    border: none;
    padding: .4rem .25rem;
    min-height: 2.75rem;
    font-weight: 600;
    font-size: .875rem;
    color: var(--indigo);
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}

.rq-text-btn:hover { text-decoration: underline; }

.rq-text-btn:disabled {
    opacity: .5;
    text-decoration: none;
}

.rq-hint-panel {
    background: rgba(var(--warning-rgb), .1);
    border: 1px dashed rgba(var(--warning-rgb), .4);
    border-radius: .9rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    font-size: .925rem;
}

/* ---- Inline result panel ---- */
.rq-result {
    text-align: center;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    padding: 1.75rem 1.5rem;
    margin-top: .5rem;
}

@media (prefers-reduced-motion: no-preference) {
    .rq-result { animation: rq-fade-in .3s ease both; }
    .rq-result--correct .rq-result-icon { animation: rq-pop .4s ease; }
}

@keyframes rq-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes rq-pop {
    0% { transform: scale(.6); opacity: 0; }
    60% { transform: scale(1.12); opacity: 1; }
    100% { transform: scale(1); }
}

.rq-result-icon {
    font-size: 2.25rem;
    line-height: 1;
    margin-bottom: .4rem;
}

.rq-result-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: .5rem;
}

.rq-result--correct .rq-result-icon,
.rq-result--correct .rq-result-title { color: rgb(var(--success-rgb)); }

.rq-result--incorrect .rq-result-icon,
.rq-result--incorrect .rq-result-title { color: rgb(var(--danger-rgb)); }

.rq-result--timeout .rq-result-icon,
.rq-result--timeout .rq-result-title { color: rgb(var(--warning-rgb)); }

.rq-result-line {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: .25rem;
}

.rq-breakdown {
    max-width: 18rem;
    margin: 1rem auto;
    padding: .9rem 1.1rem;
    border-radius: .9rem;
    background: var(--surface-muted-bg);
    text-align: left;
}

.rq-breakdown-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: .875rem;
    padding: .2rem 0;
    opacity: .85;
}

.rq-breakdown-row--total {
    border-top: 1px dashed var(--border-color);
    margin-top: .3rem;
    padding-top: .5rem;
    font-weight: 700;
    opacity: 1;
    color: var(--indigo);
}

.rq-streak-line {
    display: inline-block;
    font-weight: 700;
    font-size: .875rem;
    color: rgb(var(--warning-rgb));
    background: rgba(var(--warning-rgb), .12);
    padding: .3rem .9rem;
    border-radius: 50rem;
    margin-bottom: .5rem;
}

.rq-explanation {
    text-align: left;
    background: var(--surface-muted-bg);
    border-radius: .9rem;
    padding: 1rem 1.25rem;
    margin: 1rem 0;
}

.rq-explanation-header {
    display: flex;
    align-items: center;
    gap: .4rem;
    font-weight: 700;
    font-size: .8125rem;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--indigo);
    margin-bottom: .4rem;
}

.rq-explanation p {
    margin: 0;
    font-size: .925rem;
    line-height: 1.6;
    opacity: .9;
}

.rq-next-btn {
    width: 100%;
    font-weight: 700;
    min-height: 2.9rem;
    margin-top: .5rem;
}

/* ---- Results screen ---- */
.rq-score-card {
    max-width: 30rem;
    margin: 1rem auto 0;
    padding: 2.25rem 1.75rem;
    border-radius: 1.25rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    box-shadow: var(--surface-hover-shadow);
}

.rq-score-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: rgba(var(--indigo-rgb), .12);
    color: var(--indigo);
    font-size: 1.6rem;
    margin: 0 auto 1rem;
}

.rq-score-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: .5rem;
}

.rq-score-points {
    font-size: 2rem;
    font-weight: 800;
    color: var(--indigo);
    margin-bottom: .1rem;
}

.rq-score-correct {
    opacity: .75;
    margin-bottom: .1rem;
}

.rq-score-rating {
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.rq-stats { margin-bottom: .5rem; }

.rq-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: .9rem .5rem;
    border-radius: .9rem;
    background: var(--surface-muted-bg);
}

.rq-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.rq-stat-label {
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    opacity: .6;
}

@media (min-width: 576px) {
    .rq-game { padding-top: 1.5rem; }

    .rq-riddle-card { padding: 2.25rem 2rem; }

    .rq-options { flex-direction: column; }
}