/* listen.css: styles for the Beat trainer page. Tokens come from styles/base.css. */

.page > * { max-width: 760px; }

/* Tabs */
.tabs {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; padding: 4px;
    border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-2);
}
.tab {
    font: inherit; font-weight: 600; color: var(--muted); background: transparent; border: 1px solid transparent;
    border-radius: 8px; min-height: 48px; padding: 8px 12px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 10px;
}
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { background: var(--surface); color: var(--text); border-color: var(--border); box-shadow: 0 1px 2px rgb(0 0 0 / 0.06); }
.tab-number {
    width: 24px; height: 24px; flex: none; border-radius: 50%; display: grid; place-items: center;
    font-size: 0.8125rem; font-weight: 700; border: 1.5px solid var(--border); color: var(--muted);
}
.tab[aria-selected="true"] .tab-number { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }

/* Panel */
.panel { display: grid; gap: 24px; }
.instruction { border-left: 6px solid var(--accent); padding: 4px 0 4px 20px; }
.instruction-title { margin: 0; font-size: 1.75rem; font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }
.instruction-text { margin: 8px 0 0; font-size: 1.0625rem; color: var(--muted); max-width: 60ch; }

.actions { display: flex; align-items: center; gap: 12px 16px; flex-wrap: wrap; }
.button.primary[data-playing="true"] { background: var(--surface); color: var(--bad); border-color: var(--bad); }

.panel-foot { display: grid; gap: 8px; padding-top: 20px; border-top: 1px solid var(--border); }
.facts { display: flex; flex-wrap: wrap; gap: 8px 40px; margin: 0; }
.facts dt { font-size: 0.8125rem; color: var(--muted); }
.facts dd { margin: 0; font-weight: 700; font-size: 1.125rem; }
.hint { margin: 0; font-size: 0.875rem; color: var(--muted); }

/* Hear it: settings */
.settings { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px 24px; align-items: start; }
.field { display: grid; gap: 6px; }
.field label { font-size: 0.875rem; font-weight: 600; }

.switch { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 12px; align-items: start; cursor: pointer; padding-top: 26px; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch-track {
    position: relative; width: 44px; height: 26px; border-radius: 999px; background: var(--surface-2);
    border: 1px solid var(--border); transition: background 120ms;
}
.switch-track::after {
    content: ""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 50%;
    background: var(--surface); box-shadow: 0 1px 2px rgb(0 0 0 / 0.3); transition: transform 120ms;
}
.switch input:checked + .switch-track { background: var(--accent); border-color: var(--accent); }
.switch input:checked + .switch-track::after { transform: translateX(18px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--accent); outline-offset: 2px; }
.switch-text { display: grid; gap: 2px; }
.switch-label { font-weight: 600; line-height: 26px; }
.switch-hint { font-size: 0.8125rem; color: var(--muted); }

/* Hear it: readout and slider */
.readout { display: grid; gap: 16px; padding: 20px 24px; border-radius: var(--radius); background: var(--surface-2); }
.readout-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.speed { display: flex; align-items: baseline; gap: 12px; }
.big-number { font-size: 4rem; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.speed-unit { font-size: 1.5rem; font-weight: 600; color: var(--muted); }

.pulse { display: grid; justify-items: center; gap: 8px; min-width: 120px; }
.pulse-dot {
    display: block; width: 40px; height: 40px; flex: none; border-radius: 50%;
    background: var(--surface); border: 2px solid var(--border);
}
.pulse[data-active="true"] .pulse-dot { background: var(--accent); border-color: var(--accent); }
.pulse-text, .pulse-caption { font-size: 0.8125rem; color: var(--muted); text-align: center; max-width: 140px; }
.pulse-text { display: none; }
@media (prefers-reduced-motion: reduce) {
    /* No flashing: the rate is given as text instead. */
    .pulse[data-active="true"] .pulse-caption { display: none; }
    .pulse[data-active="true"] .pulse-text { display: block; }
}

.rate-slider { display: grid; gap: 4px; }
.rate-slider input { width: 100%; margin: 0; height: 32px; accent-color: var(--accent); cursor: pointer; }
.slider-axis { display: flex; justify-content: space-between; font-size: 0.8125rem; color: var(--muted); }

/* Which is faster? slots */
.slots { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.slot {
    display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto auto; align-items: center; gap: 2px 12px;
    padding: 16px 20px; min-height: 88px; border-radius: var(--radius); border: 2px solid var(--border); background: var(--surface);
}
.slot-name { font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.slot-rate { grid-row: 2; font-size: 1.375rem; font-weight: 700; min-height: 1.5em; white-space: nowrap; }
.slot-unit { font-size: 0.875rem; font-weight: 600; color: var(--muted); margin-left: 6px; }
.slot .pulse-dot { grid-column: 2; grid-row: 1 / span 2; width: 32px; height: 32px; }
.slot[data-state="playing"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.slot[data-state="playing"] .slot-name { color: var(--accent); }
.slot[data-state="playing"][data-revealed="false"] .slot-rate { color: var(--accent); font-size: 1rem; font-weight: 600; }
.slot[data-state="done"] { opacity: 0.6; }
.slot[data-revealed="false"] .pulse-dot { visibility: hidden; }
.slot[data-revealed="true"] .pulse-dot { background: var(--accent); border-color: var(--accent); }
.slot[data-faster="true"] .slot-name::after { content: " \00B7  faster"; color: var(--ok); }

/* Answers */
.answers { display: grid; gap: 8px; }
.answers.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.answers.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.answer {
    font: inherit; font-weight: 600; color: var(--text); background: var(--surface); cursor: pointer;
    border: 1.5px solid var(--accent); border-radius: 8px; min-height: 52px; padding: 8px 12px;
    display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap; text-align: center; line-height: 1.25;
}
.answer:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 10%, var(--surface)); }
.answer:disabled { cursor: default; border-color: var(--border); color: var(--muted); }
.answers:not(:has([data-result])) .answer:disabled { opacity: 0.6; }
.answers.three .answer { display: block; }
.answer::before { margin-right: 6px; }
.answer-number { font-size: 1.375rem; font-weight: 700; }
.answer-unit { font-size: 0.8125rem; font-weight: 500; color: var(--muted); }
.answer[data-result="right"] { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, var(--surface)); color: var(--text); }
.answer[data-result="right"]::before { content: "\2713"; color: var(--ok); font-weight: 700; }
.answer[data-result="wrong"] { border-color: var(--warn); background: color-mix(in srgb, var(--warn) 12%, var(--surface)); color: var(--text); }
.answer[data-result="wrong"]::before { content: "\2715"; color: var(--warn); font-weight: 700; }
.answer[data-result="other"] { opacity: 0.5; }

/* Feedback */
.feedback {
    margin: 0; display: flex; align-items: center; gap: 16px; padding: 14px 16px; border-radius: 8px;
    font-size: 1.0625rem; border-left: 6px solid var(--border); background: var(--surface-2);
}
.feedback[data-tone="good"] { border-left-color: var(--ok); }
.feedback[data-tone="warn"] { border-left-color: var(--warn); }
.feedback .pulse-dot { background: var(--accent); border-color: var(--accent); }

.storage-note {
    margin: 0; font-size: 0.875rem; color: var(--muted); padding: 8px 12px;
    border: 1px solid var(--border); border-left: 4px solid var(--warn); border-radius: 8px; background: var(--surface);
}

@media (prefers-reduced-motion: reduce) {
    .switch-track, .switch-track::after { transition: none; }
}

@media (max-width: 600px) {
    .page { padding-top: 16px; }
    .card { padding: 16px; }
    .panel { gap: 20px; }
    .tab { flex-direction: column; gap: 2px; padding: 6px 4px; font-size: 0.875rem; line-height: 1.2; }
    .tab-number { width: 20px; height: 20px; font-size: 0.75rem; }
    .instruction { padding-left: 14px; border-left-width: 5px; }
    .instruction-title { font-size: 1.5rem; }
    .instruction-text { font-size: 1rem; }
    .settings { grid-template-columns: minmax(0, 1fr); }
    .switch { padding-top: 0; }
    .readout { padding: 16px; }
    .big-number { font-size: 3rem; }
    .speed-unit { font-size: 1.125rem; }
    .pulse { min-width: 72px; }
    .actions { flex-wrap: nowrap; gap: 8px; }
    .actions .button.primary { flex: 1 1 auto; min-width: 0; }
    .actions .button.secondary { flex: none; min-height: 48px; }
    .slots { gap: 8px; }
    .slot { padding: 12px; gap: 2px 8px; min-height: 76px; }
    .slot-name { font-size: 0.75rem; }
    .slot-rate { font-size: 1.25rem; }
    .slot-unit { display: block; margin-left: 0; font-size: 0.75rem; line-height: 1.2; }
    .slot .pulse-dot { width: 24px; height: 24px; }
    .slot[data-faster="true"] .slot-name::after { content: " \00B7  faster"; white-space: nowrap; }
    .answer { padding: 8px 6px; font-size: 0.9375rem; }
    .answers.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}