:root {
    --bg: #f5f7fa;
    --card: #ffffff;
    --text: #1f2933;
    --muted: #616e7c;
    --primary: #0b6bcb;
    --border: #d9e2ec;
    --ok: #1f9d55;
    --err: #c53030;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
}
header h1 { margin: 0; font-size: 1.4rem; }
header h1 span { color: var(--primary); font-weight: 400; }

.badge {
    font-size: .8rem;
    padding: 4px 10px;
    border-radius: 999px;
    background: #e6f0fa;
    color: var(--primary);
}

.tabs {
    display: flex;
    gap: 4px;
    padding: 0 32px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
}
.tab {
    border: none;
    background: none;
    padding: 12px 16px;
    font-size: .95rem;
    cursor: pointer;
    color: var(--muted);
    border-bottom: 3px solid transparent;
}
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

main { max-width: 960px; margin: 24px auto; padding: 0 16px; }

.panel {
    display: none;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
}
.panel.active { display: block; }
.panel h2 { margin-top: 0; }

.drop {
    display: block;
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 32px;
    text-align: center;
    color: var(--muted);
    cursor: pointer;
    margin-bottom: 12px;
}
.drop.over { border-color: var(--primary); background: #f0f7ff; }
.drop input { display: none; }

audio { width: 100%; margin-bottom: 12px; }

.row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 12px; }
label { display: flex; flex-direction: column; font-size: .85rem; color: var(--muted); gap: 4px; }
select, button { font-size: .95rem; padding: 8px 14px; border-radius: 6px; border: 1px solid var(--border); background: #fff; }
button { cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }

.status { min-height: 1.4em; font-size: .9rem; color: var(--muted); }
.status.ok { color: var(--ok); }
.status.err { color: var(--err); }

.result {
    min-height: 120px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fbfcfd;
    white-space: pre-wrap;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.5;
}
.live .final { color: var(--text); }
.live .partial { color: var(--muted); font-style: italic; }

.meter { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; margin-bottom: 8px; }
#level { height: 100%; width: 0; background: var(--ok); transition: width 80ms linear; }

.hint { color: var(--muted); font-size: .9rem; }
.log { max-height: 240px; overflow: auto; font-size: .75rem; background: #1f2933; color: #d9e2ec; padding: 12px; border-radius: 6px; }
details { margin-top: 16px; }