/* ============================================
   MELODIC DICTATION TRAINER — standalone tool page.
   Uses the content-page chrome (site-header/footer) + these
   self-contained tokens. Dark mode keys off body.dark-mode.
   ============================================ */

:root {
    --dt-ink: #1c1917; --dt-muted: #6b6560; --dt-line: #e7e5e4;
    --dt-bg: #fbfbfa; --dt-card: #fff;
    --dt-accent: #0d9488; --dt-accent-dark: #0b7c72; --dt-accent-soft: #f0fdfa;
    --dt-good: #16a34a; --dt-good-soft: #f0fdf4;
    --dt-bad: #dc2626; --dt-bad-soft: #fef2f2;
    --dt-amber: #b45309; --dt-amber-soft: #fffbeb;
}
body.dark-mode {
    --dt-ink: #f5f5f4; --dt-muted: #a8a29e; --dt-line: #3a3633;
    --dt-bg: #1a1817; --dt-card: #242120;
    --dt-accent: #2dd4bf; --dt-accent-dark: #5eead4; --dt-accent-soft: #132a27;
    --dt-good: #4ade80; --dt-good-soft: #14291b;
    --dt-bad: #f87171; --dt-bad-soft: #2d1a1a;
    --dt-amber: #fbbf24; --dt-amber-soft: #2c2311;
}

body { background: var(--dt-bg); color: var(--dt-ink); margin: 0;
    font-family: Inter, -apple-system, system-ui, sans-serif; line-height: 1.55; }
.dt-wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* ---------- intro ---------- */
.dt-intro { padding: 30px 0 4px; }
.dt-intro h1 { font-size: clamp(24px, 4vw, 32px); margin: 0 0 8px; letter-spacing: -.02em; font-weight: 800; }
.dt-intro .lead { color: var(--dt-muted); font-size: 15.5px; margin: 0; max-width: 640px; }

/* ---------- level picker ---------- */
.dt-levels { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 14px; }
.dt-level { font: inherit; font-size: 13px; font-weight: 700; padding: 6px 12px;
    border-radius: 100px; border: 1.5px solid var(--dt-line); background: var(--dt-card);
    color: var(--dt-muted); cursor: pointer; transition: all .13s; }
.dt-level:hover:not(:disabled) { border-color: var(--dt-accent); color: var(--dt-accent); }
.dt-level.on { background: var(--dt-accent); border-color: var(--dt-accent); color: #fff; }
.dt-level.done:not(.on) { border-color: var(--dt-accent); color: var(--dt-accent-dark); }
.dt-level:disabled { opacity: .38; cursor: default; }

/* ---------- the card ---------- */
.dt-card { background: var(--dt-card); border: 1px solid var(--dt-line); border-radius: 16px;
    padding: 20px 22px 22px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.dt-topline { display: flex; align-items: baseline; gap: 10px 14px; flex-wrap: wrap; margin-bottom: 6px; }
.dt-keyname { font-size: 16px; font-weight: 800; }
.dt-hint { font-size: 13px; color: var(--dt-muted); }
.dt-plays { margin-left: auto; font-size: 12px; color: var(--dt-muted); }

.dt-listen { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0 4px; }
.dt-btn { font: inherit; font-weight: 700; border: none; border-radius: 10px;
    padding: 11px 16px; cursor: pointer; transition: transform .1s, box-shadow .12s; }
.dt-btn:active { transform: translateY(1px); }
.dt-btn-primary { background: linear-gradient(135deg, #14b8a6, #0d9488); color: #fff;
    box-shadow: 0 4px 12px rgba(13,148,136,.3); font-size: 15px; }
.dt-btn-primary:hover { box-shadow: 0 6px 16px rgba(13,148,136,.4); }
.dt-btn-ghost { background: transparent; color: var(--dt-accent); border: 1.5px solid var(--dt-accent-soft); font-size: 14px; }
body.dark-mode .dt-btn-ghost { border-color: #2f5c56; }
.dt-btn-ghost:hover { background: var(--dt-accent-soft); border-color: var(--dt-accent); }
.dt-btn:disabled { opacity: .4; cursor: default; box-shadow: none; }

/* ---------- staves ---------- */
.dt-staff { margin: 8px 0 0; }
.dt-staff svg { width: 100%; height: auto; display: block; }
body.dark-mode .dt-staff { background: #faf9f7; border-radius: 10px; padding: 2px 6px; }
.dt-staff-label { font-size: 11.5px; font-weight: 800; text-transform: uppercase;
    letter-spacing: .06em; color: var(--dt-muted); margin: 12px 0 0; }

/* ---------- entry chips (syllable slots) ---------- */
.dt-slots { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 2px; }
.dt-slot { min-width: 44px; text-align: center; padding: 6px 8px; border-radius: 9px;
    border: 1.5px dashed var(--dt-line); color: var(--dt-muted); font-weight: 700; font-size: 14px; }
.dt-slot.filled { border-style: solid; border-color: var(--dt-accent); color: var(--dt-ink); background: var(--dt-accent-soft); }
.dt-slot.good { border-color: var(--dt-good); background: var(--dt-good-soft); color: var(--dt-good); }
.dt-slot.bad { border-color: var(--dt-bad); background: var(--dt-bad-soft); color: var(--dt-bad); }
.dt-slot.lit { outline: 2px solid var(--dt-amber); outline-offset: 1px; }

/* ---------- input pad ---------- */
.dt-pad { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; margin: 14px 0 10px; }
.dt-key { font: inherit; font-weight: 800; font-size: 15px; padding: 16px 4px;
    border-radius: 11px; border: 1.5px solid var(--dt-line); background: var(--dt-card);
    color: var(--dt-ink); cursor: pointer; transition: all .1s; }
.dt-key small { display: block; font-size: 10px; font-weight: 600; color: var(--dt-muted); margin-top: 2px; }
.dt-key:hover:not(:disabled) { border-color: var(--dt-accent); color: var(--dt-accent); }
.dt-key:active { transform: translateY(1px); background: var(--dt-accent-soft); }
.dt-key:disabled { opacity: .35; cursor: default; }

.dt-entry-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.dt-entry-actions .spacer { flex: 1; }
.dt-toggle { font: inherit; font-size: 12px; font-weight: 700; color: var(--dt-muted);
    background: none; border: 1px solid var(--dt-line); border-radius: 100px; padding: 5px 11px; cursor: pointer; }
.dt-toggle:hover { color: var(--dt-accent); border-color: var(--dt-accent); }

/* ---------- result ---------- */
.dt-result { margin-top: 14px; padding: 12px 14px; border-radius: 11px; font-weight: 700;
    font-size: 14.5px; display: none; }
.dt-result.good { display: block; background: var(--dt-good-soft); color: var(--dt-good); border: 1px solid var(--dt-good); }
.dt-result.bad { display: block; background: var(--dt-bad-soft); color: var(--dt-bad); border: 1px solid var(--dt-bad); }
.dt-after { display: none; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.dt-after.show { display: flex; }

/* ---------- stats + share ---------- */
.dt-meta { display: flex; gap: 16px; flex-wrap: wrap; align-items: center;
    margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--dt-line);
    font-size: 13px; color: var(--dt-muted); }
.dt-meta strong { color: var(--dt-ink); }
.dt-share { margin-left: auto; font: inherit; font-size: 12.5px; font-weight: 700;
    color: var(--dt-accent); background: none; border: none; cursor: pointer; padding: 0; }
.dt-share:hover { text-decoration: underline; }
.dt-status { font-size: 12.5px; color: var(--dt-muted); margin-top: 8px; min-height: 1.2em; }

/* ---------- educational content ---------- */
.dt-content { margin: 30px 0 50px; }
.dt-content h2 { font-size: 20px; margin: 26px 0 8px; font-weight: 800; }
.dt-content h3 { font-size: 15.5px; margin: 16px 0 5px; font-weight: 700; }
.dt-content p, .dt-content li { color: var(--dt-muted); font-size: 14.5px; }
.dt-content a { color: var(--dt-accent); font-weight: 700; text-decoration: none; }
.dt-content a:hover { text-decoration: underline; }
.dt-content table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.dt-content th, .dt-content td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--dt-line); }
.dt-content th { color: var(--dt-ink); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.dt-content td { color: var(--dt-muted); }
.dt-content td:first-child { color: var(--dt-ink); font-weight: 700; white-space: nowrap; }

@media (max-width: 640px) {
    .dt-pad { grid-template-columns: repeat(4, 1fr); }
    .dt-card { padding: 16px 14px 18px; }
}