/* Riddle Up — Riddle Streak
   Accuracy-first, no-timer game (see RiddleStreakController,
   riddle-streak.js). The streak count is the dominant visual element
   throughout. Uses the `--surface-*` dark-theme-safe tokens defined in
   ../site.css (loaded sitewide). Loaded only on this page via
   RiddleStreakController (see \Assets::add). */

.rst-app {
    max-width: 32rem;
    margin: 0 auto;
    padding: .75rem 0 2rem;
    position: relative;
}

.rst-screen { width: 100%; }

/* ---- Start screen ---- */
.rst-start-card {
    max-width: 26rem;
    margin: .5rem auto 0;
    padding: 2rem 1.5rem;
    border-radius: 1.25rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    box-shadow: var(--surface-hover-shadow);
}

.rst-start-icon { display: block; font-size: 2.5rem; margin-bottom: .5rem; }

.rst-start-title {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: .02em;
    margin-bottom: .25rem;
}

.rst-start-tagline { opacity: .75; font-weight: 600; margin-bottom: 1rem; }

.rst-start-note { font-size: .875rem; opacity: .8; padding: .15rem 0; }

.rst-best-row {
    display: flex;
    flex-direction: column;
    gap: .2rem;
    margin: 1rem 0;
    font-size: .875rem;
}

.rst-start-btn {
    width: 100%;
    margin-top: .5rem;
    font-weight: 800;
    min-height: 3rem;
    letter-spacing: .02em;
}

.rst-unavailable { margin-top: 1.25rem; font-size: .875rem; opacity: .7; }

.rst-leaderboard-link {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    background: none;
    border: none;
    margin-top: 1rem;
    padding: .3rem .5rem;
    min-height: 2.5rem;
    font-weight: 600;
    font-size: .8125rem;
    color: var(--indigo);
}

.rst-howto {
    margin-top: 1rem;
    text-align: left;
    font-size: .8125rem;
}

.rst-howto summary {
    cursor: pointer;
    font-weight: 600;
    text-align: center;
    color: var(--indigo);
    list-style: none;
}

.rst-howto summary::-webkit-details-marker { display: none; }

.rst-howto ul {
    margin: .75rem 0 0;
    padding-left: 1.1rem;
    opacity: .8;
    line-height: 1.7;
}

/* ---- Active game screen ---- */
.rst-header { margin-bottom: .5rem; }

.rst-exit-btn {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    background: none;
    border: none;
    padding: .3rem .25rem;
    min-height: 2.5rem;
    font-weight: 600;
    font-size: .8125rem;
    color: var(--body-color);
    opacity: .75;
}

.rst-header-title {
    font-weight: 800;
    font-size: .9rem;
    letter-spacing: .02em;
    opacity: .8;
}

.rst-header-trophy {
    background: none;
    border: none;
    min-height: 2.5rem;
    min-width: 2.5rem;
    color: rgb(var(--warning-rgb));
    font-size: 1.1rem;
}

.rst-streak-label {
    font-size: .8125rem;
    font-weight: 700;
    letter-spacing: .08em;
    opacity: .6;
    margin-top: .25rem;
}

.rst-streak-number {
    font-size: clamp(3rem, 14vw, 4.5rem);
    font-weight: 800;
    line-height: 1;
    color: var(--indigo);
    font-variant-numeric: tabular-nums;
}

@media (prefers-reduced-motion: no-preference) {
    .rst-streak-number { transition: transform .15s ease; }
}

.rst-onfire {
    display: inline-block;
    font-weight: 700;
    font-size: .8125rem;
    color: rgb(var(--danger-rgb));
    background: rgba(var(--danger-rgb), .12);
    padding: .25rem .8rem;
    border-radius: 50rem;
    margin: .35rem auto .5rem;
}

.rst-stats-row {
    gap: .5rem;
    flex-wrap: wrap;
    margin: .5rem 0 .75rem;
}

.rst-stat-pill {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    font-size: .8125rem;
    font-weight: 600;
    padding: .25rem .7rem;
    border-radius: 50rem;
    background: var(--surface-muted-bg);
}

.rst-stat-pill--score { color: var(--indigo); }

.rst-badge {
    display: inline-block;
    padding: .25rem .8rem;
    border-radius: 50rem;
    font-weight: 700;
    font-size: .7rem;
    letter-spacing: .05em;
}

.rst-badge--easy { background: rgba(var(--success-rgb), .14); color: rgb(var(--success-rgb)); }
.rst-badge--medium { background: rgba(var(--warning-rgb), .16); color: rgb(var(--warning-rgb)); }
.rst-badge--hard { background: rgb(var(--danger-rgb)); color: var(--white); }
.rst-badge--expert { background: linear-gradient(135deg, rgb(var(--danger-rgb)), var(--indigo)); color: var(--white); }

.rst-error {
    text-align: center;
    padding: .75rem 1rem;
    border-radius: .8rem;
    background: rgba(var(--danger-rgb), .1);
    border: 1px solid rgba(var(--danger-rgb), .3);
    margin-bottom: .75rem;
}

.rst-error p { margin-bottom: .5rem; font-size: .875rem; }

.rst-next-label {
    text-align: center;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .08em;
    opacity: .5;
    margin-bottom: .35rem;
}

.rst-riddle-card {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 1.1rem;
    box-shadow: var(--surface-hover-shadow);
    padding: 1.25rem;
    margin-bottom: .75rem;
    text-align: center;
    min-height: 4.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rst-riddle-text {
    margin: 0;
    font-size: clamp(1.05rem, 1rem + .8vw, 1.35rem);
    font-weight: 700;
    line-height: 1.45;
    white-space: pre-line;
}

.rst-answer-form { display: flex; gap: .5rem; margin-bottom: .5rem; }

.rst-answer-input {
    flex: 1;
    min-width: 0;
    padding: .75rem 1rem;
    font-size: 1rem;
    border-radius: .8rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    color: var(--body-color);
}

.rst-answer-input:focus {
    outline: none;
    border-color: var(--indigo);
    box-shadow: 0 0 0 .2rem rgba(var(--indigo-rgb), .2);
}

.rst-answer-input:disabled { opacity: .6; }

.rst-submit-btn {
    flex-shrink: 0;
    font-weight: 700;
    padding: 0 1.25rem;
    min-height: 2.9rem;
}

.rst-hint-btn {
    background: none;
    border: none;
    padding: .3rem .5rem;
    min-height: 2.5rem;
    font-weight: 600;
    font-size: .8125rem;
    color: var(--indigo);
    display: inline-flex;
    align-items: center;
    gap: .3rem;
}

.rst-hint-btn:disabled { opacity: .5; }

.rst-hint-panel {
    background: rgba(var(--warning-rgb), .1);
    border: 1px dashed rgba(var(--warning-rgb), .4);
    border-radius: .8rem;
    padding: .7rem 1rem;
    margin-top: .5rem;
    font-size: .875rem;
    text-align: center;
}

/* ---- Correct-answer toast ---- */
.rst-toast {
    position: fixed;
    left: 50%;
    bottom: 1.5rem;
    transform: translateX(-50%);
    z-index: 1050;
    display: flex;
    align-items: center;
    gap: .5rem;
    background: rgb(var(--success-rgb));
    color: var(--white);
    font-weight: 700;
    font-size: .925rem;
    padding: .75rem 1.25rem;
    border-radius: 50rem;
    box-shadow: 0 .5rem 1.5rem rgba(0, 0, 0, .25);
    max-width: calc(100vw - 2rem);
}

@media (prefers-reduced-motion: no-preference) {
    .rst-toast { animation: rst-toast-in .2s ease both; }
}

@keyframes rst-toast-in {
    from { opacity: 0; transform: translateX(-50%) translateY(8px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ---- Results screen ---- */
.rst-score-card {
    max-width: 28rem;
    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);
}

.rst-score-icon { font-size: 2.25rem; display: block; margin-bottom: .5rem; }

.rst-score-title { font-size: 1.35rem; font-weight: 800; margin-bottom: .25rem; }

.rst-encourage { opacity: .75; font-size: .9rem; margin-bottom: 1rem; }

.rst-final-streak {
    font-size: clamp(3rem, 14vw, 4rem);
    font-weight: 800;
    line-height: 1;
    color: var(--indigo);
}

.rst-final-streak-label {
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .08em;
    opacity: .55;
    margin-bottom: .75rem;
}

.rst-best-banner {
    font-weight: 700;
    color: rgb(var(--warning-rgb));
    margin-bottom: .75rem;
}

.rst-wrong-answer {
    text-align: left;
    background: var(--surface-muted-bg);
    border-radius: .9rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    font-size: .875rem;
}

.rst-wrong-answer p { margin-bottom: .35rem; }
.rst-wrong-answer p:last-child { margin-bottom: 0; }

.rst-wa-label { font-weight: 700; opacity: .65; margin-right: .3rem; }

.rst-wa-explain {
    padding-top: .5rem;
    margin-top: .5rem;
    border-top: 1px dashed var(--border-color);
    opacity: .85;
}

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

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

.rst-stat-value { font-size: 1.15rem; font-weight: 700; }

.rst-stat-label {
    font-size: .68rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    opacity: .6;
    text-align: center;
}

.rst-all-games-link {
    display: inline-block;
    margin-top: 1rem;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--body-color);
    opacity: .65;
}

/* ---- Leaderboard panel ---- */
.rst-leaderboard-overlay {
    position: fixed;
    inset: 0;
    z-index: 1060;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(0, 0, 0, .5);
}

.rst-leaderboard-card {
    width: 100%;
    max-width: 26rem;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--surface-bg);
    border-radius: 1.1rem;
    padding: 1.25rem;
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, .3);
}

.rst-leaderboard-title {
    display: flex;
    align-items: center;
    gap: .4rem;
    font-size: 1.05rem;
    font-weight: 800;
    color: rgb(var(--warning-rgb));
    margin: 0;
}

.rst-close-btn {
    background: none;
    border: none;
    min-height: 2.5rem;
    min-width: 2.5rem;
    color: var(--body-color);
    opacity: .6;
}

.rst-lb-tabs {
    display: flex;
    gap: .35rem;
    overflow-x: auto;
    margin-bottom: .75rem;
    padding-bottom: .25rem;
}

.rst-lb-tab {
    flex-shrink: 0;
    background: var(--surface-muted-bg);
    border: none;
    border-radius: 50rem;
    padding: .4rem 1rem;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--body-color);
    opacity: .7;
}

.rst-lb-tab--active {
    background: var(--indigo);
    color: var(--white);
    opacity: 1;
}

.rst-lb-table { display: flex; flex-direction: column; }

.rst-lb-row {
    display: grid;
    grid-template-columns: 2.5rem 1fr auto auto;
    align-items: center;
    gap: .5rem;
    padding: .55rem .25rem;
    border-bottom: 1px solid var(--surface-divider);
    font-size: .875rem;
}

.rst-lb-row:last-child { border-bottom: none; }

.rst-lb-row--you {
    background: rgba(var(--indigo-rgb), .08);
    border-radius: .6rem;
    font-weight: 700;
}

.rst-lb-rank { opacity: .6; font-weight: 700; }
.rst-lb-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rst-lb-streak { font-weight: 700; color: rgb(var(--danger-rgb)); white-space: nowrap; }
.rst-lb-score { opacity: .6; font-size: .8125rem; white-space: nowrap; }

.rst-lb-sep {
    text-align: center;
    opacity: .4;
    padding: .25rem 0;
}

.rst-lb-empty,
.rst-lb-loading {
    text-align: center;
    opacity: .65;
    font-size: .875rem;
    padding: 1.5rem 0;
}

@media (min-width: 576px) {
    .rst-app { padding-top: 1.25rem; }
    .rst-riddle-card { padding: 1.5rem; }
}