/* RewardMaths v5 — clean arcade, not playschool. Tablet-first, symmetric,
   dark; zero decoration during answering (docs/REWRITE.md §6). */

:root {
    --bg: #0b101d;
    --bg-glow: rgba(53, 196, 240, 0.09);
    --panel: #151d2e;
    --panel-2: #1c2740;
    --stroke: #253352;
    --text: #edf2fa;
    --dim: #8494ad;
    --good: #34d284;
    --fix: #ffb454;
    --accent: #38c8f5;
    --accent-deep: #0e7fb0;
    --radius: 20px;
}
[data-accent="b"] {
    --accent: #b48cf2; --accent-deep: #6d47b8;
    --bg-glow: rgba(180, 140, 242, 0.09);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body {
    margin: 0; height: 100%;
    background: var(--bg); color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    overscroll-behavior: none;
}
#app {
    height: 100dvh; display: flex; flex-direction: column; overflow: hidden;
    background: radial-gradient(ellipse 70% 36% at 50% -4%, var(--bg-glow), transparent);
}
.boot { margin: auto; color: var(--dim); font-size: 1.2rem; }

.screen {
    flex: 1; display: flex; flex-direction: column; align-items: center;
    padding: max(2.5vh, 14px) 20px calc(14px + env(safe-area-inset-bottom));
    max-width: 620px; margin: 0 auto; width: 100%;
    overflow-y: auto;
}

h1 { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.02em; margin: 0; }
h2 { font-size: 1.35rem; font-weight: 700; margin: 10px 0; }
h3 { font-size: 0.8rem; color: var(--dim); text-transform: uppercase;
     letter-spacing: 0.12em; font-weight: 700; margin: 6px 0; }

button { font: inherit; color: inherit; border: 0; cursor: pointer; background: none; }
.link { color: var(--dim); font-size: 0.95rem; padding: 12px; }
.link:active { color: var(--text); }
.primary {
    background: linear-gradient(180deg, var(--accent), var(--accent-deep));
    color: #061018; font-weight: 800; font-size: 1.15rem;
    padding: 16px 48px; border-radius: 999px; margin-top: auto; min-height: 56px;
    box-shadow: 0 6px 24px -8px var(--accent);
}
.primary:active { filter: brightness(1.12); transform: translateY(1px); }

/* ---- Who's playing ---- */
.who { justify-content: center; gap: 4vh; position: relative; }
.who h1 { margin-top: 0; }
.who-grid { display: flex; gap: 28px; flex-wrap: wrap; justify-content: center; }
.who-card {
    display: flex; flex-direction: column; gap: 14px; align-items: center;
    min-width: 158px; padding: 10px;
}
.who-avatar {
    font-size: 3.2rem; width: 112px; height: 112px;
    display: grid; place-items: center;
    background: var(--panel); border: 2px solid var(--stroke);
    border-radius: 50%;
    transition: transform 0.1s, border-color 0.1s;
}
.who-card:active .who-avatar { transform: scale(0.95); border-color: var(--accent); }
.who-name { font-size: 1.2rem; font-weight: 700; }
.parent-link { position: absolute; bottom: 14px; right: 14px; opacity: 0.6; }

/* ---- PIN ---- */
.pin { justify-content: flex-start; }
.pin-avatar {
    font-size: 2.6rem; width: 88px; height: 88px; display: grid; place-items: center;
    background: var(--panel); border: 2px solid var(--accent); border-radius: 50%;
    margin-top: 1vh;
}
.pin h2 { font-weight: 700; }
.pin-dots { min-height: 2rem; font-size: 1.5rem; letter-spacing: 0.45em;
            color: var(--accent); }
.pin-msg { min-height: 1.4rem; color: var(--fix); }
.back { align-self: flex-start; }

/* ---- Keypad (phone-dial: circular, symmetric) ---- */
.keypad-host { margin-top: auto; width: 100%; max-width: 340px; }
.kp-display {
    text-align: center; font-size: 2.6rem; font-weight: 800;
    min-height: 3.2rem; letter-spacing: 0.08em;
    font-variant-numeric: tabular-nums;
}
.kp-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    justify-items: center; row-gap: clamp(8px, 1.6vh, 16px); width: 100%;
}
.kp-btn {
    width: clamp(64px, 8.5vh, 84px); height: clamp(64px, 8.5vh, 84px);
    border-radius: 50%;
    background: var(--panel); border: 1.5px solid var(--stroke);
    font-size: 1.65rem; font-weight: 700;
    display: grid; place-items: center;
    transition: background 0.08s, transform 0.08s;
    touch-action: manipulation; user-select: none;
}
.kp-btn.kp-active, .kp-btn:active {
    background: var(--panel-2); transform: scale(0.94); border-color: var(--accent);
}
.kp-go {
    background: linear-gradient(180deg, var(--accent), var(--accent-deep));
    color: #061018; border: 0; box-shadow: 0 4px 18px -6px var(--accent);
}
.kp-back { color: var(--dim); font-size: 1.3rem; }

/* ---- Today ---- */
.today-head {
    width: 100%; display: flex; align-items: baseline; gap: 14px;
}
.streak { font-size: 1.2rem; font-weight: 800; }
.best { color: var(--dim); font-size: 0.85rem; flex: 1; }
.note { color: var(--dim); margin: 10px 0 0; text-align: center; font-size: 0.95rem; }

.goal-card {
    width: 100%; text-align: center;
    background: linear-gradient(180deg, var(--panel-2), var(--panel));
    border: 1px solid var(--stroke); border-radius: var(--radius);
    padding: 20px 24px; margin-top: 20px;
}
.goal-main { font-size: 1.35rem; font-weight: 800; }
.goal-why, .goal-proof { color: var(--dim); margin-top: 6px; font-size: 0.92rem; }

.medal-ladder {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    width: 100%; margin: 16px 0 4px; flex-wrap: wrap;
}
.medal { font-size: 1.7rem; filter: grayscale(1) opacity(0.3); }
.medal.earned { filter: none; transform: scale(1.08); }
.medal-note { color: var(--dim); font-size: 0.88rem; width: 100%; text-align: center; }

.rounds { width: 100%; display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
.round-card {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--panel); border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 19px 26px; font-size: 1.15rem; font-weight: 700; min-height: 64px;
    transition: transform 0.08s;
}
.round-card:not(.done):active { background: var(--panel-2); transform: scale(0.99); }
.round-card.done { opacity: 0.4; }
.rc-state {
    color: var(--accent); font-size: 1rem; width: 40px; height: 40px;
    display: grid; place-items: center;
    border: 1.5px solid var(--stroke); border-radius: 50%;
}
.round-card.done .rc-state { color: var(--good); border-color: transparent; }
.free-play { margin-top: 8px; }

.lock-card {
    width: 100%; background: var(--panel); border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 28px; margin-top: 18px; text-align: center;
    font-size: 1.1rem; line-height: 1.55;
}
.lock-preview { color: var(--dim); margin-top: 10px; opacity: 0.7; }

/* ---- Round ---- */
.round { overflow: hidden; }
.round-head {
    width: 100%; display: grid; grid-template-columns: 1fr auto 1fr;
    align-items: center; color: var(--dim); font-size: 0.9rem;
}
.round-name { font-weight: 700; color: var(--text); }
.round-progress { display: flex; gap: 6px; justify-content: center; }
.round-progress .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--stroke);
}
.round-progress .dot.ok { background: var(--good); }
.round-progress .dot.miss { background: var(--fix); }
.round-clock { text-align: right; font-variant-numeric: tabular-nums; }
.q-zone {
    flex: 1; display: flex; flex-direction: column;
    align-items: center; justify-content: center; width: 100%; min-height: 0;
}
.q-fact {
    font-size: clamp(2.8rem, 12vw, 4.6rem); font-weight: 800;
    letter-spacing: -0.01em;
    font-variant-numeric: tabular-nums; text-align: center;
}
.q-answer-slot { color: var(--accent); }
.q-feedback {
    min-height: 3.4rem; margin-top: 12px; text-align: center;
    font-size: 1.5rem; display: flex; flex-direction: column; gap: 4px;
}
.q-feedback.good { color: var(--good); font-size: 2.1rem; }
.q-feedback.fix .correction { color: var(--fix); font-weight: 800; }
.q-feedback .cue { color: var(--dim); font-size: 1.02rem; }

/* ---- End of round ---- */
.end { justify-content: center; gap: 6px; }
.end-score {
    font-size: 3.6rem; font-weight: 800; font-variant-numeric: tabular-nums;
}
.end-note, .end-improve { color: var(--dim); text-align: center; margin-top: 8px;
    max-width: 44ch; line-height: 1.55; }
.end-improve { color: var(--good); }
.end-medal { margin-top: 14px; font-size: 1rem; color: var(--dim); }
.recap { width: 100%; max-width: 400px; margin-top: 18px; }
.recap h3 { text-align: center; }
.recap-item {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--panel); border: 1px solid var(--stroke);
    border-radius: 14px; padding: 13px 18px;
    margin-top: 8px; font-size: 1.15rem; font-weight: 700;
}
.recap-try { color: var(--accent); font-size: 0.92rem; }
.recap-shown { color: var(--good); font-size: 0.95rem; }
.end .primary { margin-top: 24px; }

/* ---- Break / free ---- */
.break { justify-content: center; }
.break-msg { font-size: 1.25rem; text-align: center; line-height: 1.6;
    max-width: 38ch; margin-bottom: 4vh; }
.break .primary { margin-top: 0; }
.free-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
    width: 100%; max-width: 400px; margin-top: 12px;
}
.free-btn {
    background: var(--panel); border: 1px solid var(--stroke);
    border-radius: 14px; height: 64px; font-size: 1.25rem; font-weight: 700;
}
.free-btn:active { background: var(--panel-2); }

/* Landscape tablets/laptops: question left, keypad right. */
@media (orientation: landscape) and (min-width: 700px) {
    .screen.round { flex-direction: row; flex-wrap: wrap;
        align-items: stretch; gap: 12px; max-width: 900px; }
    .round-head { width: 100%; align-self: flex-start; }
    .q-zone { flex: 1 1 55%; }
    .keypad-host { margin: auto 0; flex: 1 1 38%; max-width: 340px; }
}

/* ---- Parent dashboard ---- */
.dash { max-width: 860px; align-items: stretch; }
.dash-head { display: flex; justify-content: space-between; align-items: baseline; }
.dash-login { justify-content: center; gap: 14px; }
.dash-login input { background: var(--panel); border: 1px solid var(--stroke);
    border-radius: 12px; color: var(--text); font-size: 1.1rem;
    padding: 14px 18px; width: 260px; text-align: center; }
.dash-warning { background: var(--panel); border-radius: 12px; padding: 12px 16px;
    font-size: 0.9rem; line-height: 1.5; margin: 10px 0; }
.dim { color: var(--dim); }
.small { font-size: 0.8rem; margin-top: 6px; }
.kid-card { background: var(--panel); border: 1px solid var(--stroke);
    border-radius: var(--radius); padding: 18px 20px; margin-top: 18px; }
.kid-head { display: flex; gap: 16px; align-items: baseline; flex-wrap: wrap; }
.kid-name { font-size: 1.3rem; font-weight: 800; flex: 1; }
.kid-streak, .kid-medal { color: var(--dim); }
.dash-row { display: flex; gap: 12px; flex-wrap: wrap; }
.panel { background: var(--panel-2); border-radius: 12px; padding: 12px 16px;
    margin-top: 12px; flex: 1; min-width: 260px; }
.panel summary { cursor: pointer; color: var(--dim); font-size: 0.95rem; }
.bars { display: flex; align-items: flex-end; gap: 4px; height: 88px; }
.bar { width: 16px; background: var(--accent); border-radius: 3px 3px 0 0;
    min-height: 4px; opacity: 0.85; }
.bar.easy { outline: 2px solid var(--fix); outline-offset: -2px; }
.fi-band { font-size: 1.8rem; font-weight: 800; }
.slope { margin-top: 8px; font-size: 0.95rem; }
.slope.green { color: var(--good); } .slope.amber { color: var(--fix); }
.slope.provisional, .slope.flat-at-mastery { color: var(--dim); }
.grid-wrap { overflow-x: auto; }
.fact-grid { border-collapse: collapse; }
.fact-grid th { color: var(--dim); font-size: 0.75rem; font-weight: 600;
    padding: 2px 4px; }
.fact-grid td { width: 22px; height: 22px; border-radius: 4px;
    border: 2px solid var(--panel-2); }
.fs-fluent { background: var(--good); }
.fs-slow { background: var(--fix); }
.fs-unknown { background: #3a4a60; }
.fs-stuck { background: #e05561; }
.fs-unseen { background: #232f42; }
.ladder { display: flex; flex-wrap: wrap; gap: 6px; }
.lad { background: #232f42; color: var(--dim); border-radius: 8px;
    padding: 5px 10px; font-size: 0.85rem; }
.lad.open { background: var(--good); color: #08131c; font-weight: 650; }
.lad.warm { background: var(--fix); color: #08131c; font-weight: 650; }
.flag { background: var(--panel); border-left: 4px solid var(--fix);
    border-radius: 8px; padding: 10px 14px; margin-top: 8px; }
.flag-conceptual { border-color: #e05561; }
.flag-slow { border-color: #3a8fe0; }
.flag-line { line-height: 1.5; }
.script { color: var(--dim); line-height: 1.6; font-size: 0.95rem; }
.script b { color: var(--text); }
.alarm { color: var(--fix); margin-top: 10px; }
.audit { color: var(--dim); font-size: 0.85rem; line-height: 1.7;
    max-height: 220px; overflow-y: auto; margin-top: 8px; }
.dash-settings { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.dash-settings label { color: var(--dim); font-size: 0.9rem; display: flex;
    gap: 6px; align-items: center; }
.dash-settings input[type="date"], .dash-settings input[type="text"] {
    background: var(--panel); border: 1px solid var(--stroke); border-radius: 8px;
    color: var(--text); padding: 6px 10px; width: auto; }
.dash-settings .new-pin { width: 64px; text-align: center; }
.dash-settings button { background: var(--panel); border: 1px solid var(--stroke);
    border-radius: 8px; padding: 8px 16px; color: var(--text); }