:root {
  --bg: #faf9f6; --panel: #ffffff; --ink: #1c211f; --mute: #6b746e; --line: #e8e5dc;
  --accent: #2c6e5c; --b0: #b4432f; --b1: #a96b0e; --b2: #2c6e5c; --b3: #5d6b80; --warn: #b4432f;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121614; --panel: #1b211e; --ink: #e9eeeb; --mute: #98a29b; --line: #2b3430;
    --accent: #62baa1; --b0: #f28d76; --b1: #e4b35c; --b2: #62baa1; --b3: #94a2b8; --warn: #f28d76; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-text-size-adjust: 100%; }
main { max-width: 640px; margin: 0 auto; padding: max(20px, env(safe-area-inset-top)) 16px 90px; }
h1 { font-size: 1.7rem; margin: 6px 0 4px; letter-spacing: -.02em; font-weight: 700; }
h1 span { color: var(--mute); font-weight: 500; }
h2 { font-size: .78rem; text-transform: uppercase; letter-spacing: .09em; color: var(--mute); margin: 0; font-weight: 700; }
small, .hint { color: var(--mute); font-size: .85rem; }
.hint { margin: 6px 0; } .warn { color: var(--warn); }
.status { margin: 0 0 16px; color: var(--mute); } .status b { color: var(--ink); }
ul { list-style: none; margin: 0; padding: 0; }
section { margin-top: 26px; }
.sechead { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }

/* fixed items under the date: quiet, one line each */
.fixedlist { margin: 0 0 4px; }
.fixed { display: flex; gap: 10px; align-items: baseline; font-size: .9rem; color: var(--mute); padding: 2px 0; }
.fixed time { min-width: 42px; font-variant-numeric: tabular-nums; }
.clash { color: var(--warn); font-size: .75rem; margin-left: auto; white-space: nowrap; }
.daynote { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; margin: 4px 0 8px; font-size: .9rem; }

/* tasks: one flat list, hairlines, no boxes */
.tasks { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; }
.task { display: grid; grid-template-columns: 26px 1fr; gap: 12px; padding: 14px; border-top: 1px solid var(--line); }
.task:first-child { border-top: 0; }
.task input { width: 22px; height: 22px; margin: 1px 0 0; accent-color: var(--accent); }
.ttl { font-weight: 600; line-height: 1.3; }
.sub { font-size: .82rem; color: var(--mute); margin-top: 2px; }
.tag { font-weight: 700; }
.b0 .tag { color: var(--b0); } .b1 .tag { color: var(--b1); } .b2 .tag { color: var(--b2); } .b3 .tag { color: var(--b3); }
.task.done .ttl { text-decoration: line-through; color: var(--mute); }
.links { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.links a { font-size: .78rem; padding: 4px 9px; border-radius: 999px; background: var(--bg); border: 1px solid var(--line); color: var(--ink); text-decoration: none; }
.links a:hover, .links a:active { border-color: var(--accent); color: var(--accent); }
.empty { color: var(--mute); background: var(--panel); border: 1px dashed var(--line); border-radius: 14px; padding: 16px; margin: 0; }

/* deadlines */
.dls { margin-top: 8px; }
.dls li { display: grid; grid-template-columns: 64px 1fr; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.when { font-weight: 700; font-size: .9rem; } .when small { display: block; font-weight: 500; }
.what b { display: block; font-weight: 600; } .what small { display: block; }
.riskmsg { color: var(--warn) !important; font-weight: 600; }

/* collapsibles */
details { border-top: 1px solid var(--line); }
details.more, details.ahead, details.doneblock { margin-top: 0; }
summary { cursor: pointer; padding: 13px 2px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "›"; color: var(--mute); transition: transform .15s; } details[open] > summary::after { transform: rotate(90deg); }
details.day summary { font-weight: 500; padding: 9px 2px; } details.day summary::after { display: none; } .m { color: var(--mute); font-weight: 400; font-size: .85rem; }
.ahead { margin-top: 14px; border-top: 0; } .ahead summary { color: var(--accent); }
.doneblock summary { color: var(--mute); font-weight: 500; font-size: .9rem; }
.plain { padding: 0 2px 8px; } .mini { display: flex; justify-content: space-between; gap: 12px; font-size: .9rem; padding: 3px 0; }
.more { margin-top: 0; } .more:first-of-type { margin-top: 22px; }

/* settings */
.av { border-collapse: collapse; margin: 8px 0; width: 100%; }
.av th { text-align: left; font-weight: 500; color: var(--mute); font-size: .85rem; padding: 4px 6px 4px 0; }
.av td { padding: 3px 6px 3px 0; } .av input { width: 100%; max-width: 76px; }
input[type=number], input[type=password] { font: inherit; padding: 7px 9px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); color: var(--ink); }
button { font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--ink); border-radius: 10px; padding: 8px 12px; cursor: pointer; }
button.ghost { background: none; font-size: .85rem; padding: 5px 10px; color: var(--mute); }
.row { margin: 10px 0; } .lock { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 10px; margin-bottom: 12px; display: flex; gap: 8px; }
footer { margin-top: 28px; }
.sync { position: fixed; bottom: 10px; right: 12px; font-size: .72rem; color: var(--mute); background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; }
details.read { margin-top: 6px; font-size: .85rem; color: var(--mute); }
details.read summary { cursor: pointer; }
details.read p { margin: 6px 0; line-height: 1.4; }
details.more h3 { font-size: .85rem; color: var(--mute); margin: 12px 0 4px; font-weight: 600; }