/* =============================================================
   Matric Countdown — styles
   ============================================================= */
:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --panel-2: #f0f2f6;
  --ink: #141820;
  --muted: #5c6574;
  --line: #e2e5eb;
  --accent: #2563d9;
  --accent-soft: #e6eefc;
  --on-accent: #ffffff;

  --math: #2563d9;
  --physics: #7c4ddb;
  --chemistry: #d56d12;
  --biology: #26914c;
  --english: #0e8a8a;
  --aptitude: #c23a78;
  --review: #6b7280;
  --rest: #c3c8d0;
  --exam: #d62f2f;

  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .06);
  --font: "Inter", "Noto Sans Ethiopic", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1016; --panel: #161a22; --panel-2: #1d222c; --ink: #e8ebf0; --muted: #9aa3b1; --line: #2a303b;
    --accent: #6b9bf5; --accent-soft: #1c2a45; --on-accent: #0d1016;
    --math: #6b9bf5; --physics: #a584f2; --chemistry: #f19a48; --biology: #52c47d; --english: #36bcbc; --aptitude: #ea6fa8;
    --review: #9aa3b1; --rest: #454c58; --exam: #ff6060;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1016; --panel: #161a22; --panel-2: #1d222c; --ink: #e8ebf0; --muted: #9aa3b1; --line: #2a303b;
  --accent: #6b9bf5; --accent-soft: #1c2a45; --on-accent: #0d1016;
  --math: #6b9bf5; --physics: #a584f2; --chemistry: #f19a48; --biology: #52c47d; --english: #36bcbc; --aptitude: #ea6fa8;
  --review: #9aa3b1; --rest: #454c58; --exam: #ff6060;
  --shadow: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.55 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }
h1, h2, h3, h4 { line-height: 1.25; margin: 0; }
[hidden] { display: none !important; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 24px 16px 64px; }

/* ---------- Header ---------- */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.brand { display: flex; align-items: center; gap: 12px; }
.logo { width: 40px; height: 40px; border-radius: 11px; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-weight: 800; font-size: 17px; }
.brand h1 { font-size: 20px; letter-spacing: -.01em; }
.brand p { margin: 0; font-size: 13px; color: var(--muted); }
.actions { display: flex; gap: 8px; }

/* ---------- Buttons ---------- */
.btn { font: inherit; font-size: 14px; font-weight: 500; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 7px 14px; border-radius: 9px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.btn:hover { border-color: var(--accent); }
.btn:focus-visible, .tab:focus-visible, .day:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.icon { padding: 7px 10px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }

/* ---------- Cards ---------- */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card + .card { margin-top: 16px; }
.eyebrow { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .07em; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* ---------- Hero ---------- */
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }
.hero .card + .card { margin-top: 0; }
.exam-date { margin-top: 4px; font-size: 15px; font-weight: 600; }
.exam-date span { color: var(--muted); font-weight: 400; }
.count { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 16px 0 14px; }
.count div { background: var(--panel-2); border-radius: 12px; padding: 12px 6px 10px; text-align: center; }
.count b { display: block; font-size: 40px; line-height: 1; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.count span { display: block; margin-top: 6px; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.count .days b { color: var(--accent); }
.stat-row { display: flex; gap: 20px; flex-wrap: wrap; font-size: 13px; color: var(--muted); padding-bottom: 14px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.stat-row b { color: var(--ink); font-size: 15px; }

.bars { display: grid; gap: 9px; }
.bar { display: grid; grid-template-columns: 96px 1fr 52px; align-items: center; gap: 10px; font-size: 13px; }
.bar .track { height: 8px; background: var(--panel-2); border-radius: 99px; overflow: hidden; }
.bar .fill { height: 100%; background: var(--c); border-radius: 99px; transition: width .3s; }
.bar .n { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }

/* ---------- Tasks ---------- */
.task { border: 1px solid var(--line); border-left: 4px solid var(--c, var(--accent)); border-radius: 10px; padding: 12px 14px; margin-top: 10px; background: var(--panel); }
.task-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.task h3 { font-size: 16px; margin: 6px 0 2px; }
.task .meta { font-size: 13px; color: var(--muted); }
.topics { margin: 8px 0 0; padding-left: 18px; font-size: 14px; }
.topics li { margin: 2px 0; }
.topics li::marker { color: var(--c, var(--muted)); }
.tag { display: inline-block; font-size: 11.5px; font-weight: 600; padding: 2px 9px; border-radius: 99px; color: #fff; background: var(--c, var(--accent)); letter-spacing: .01em; }
.tag.ghost { background: var(--panel-2); color: var(--muted); }
.links { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.links a { font-size: 12.5px; text-decoration: none; border: 1px solid var(--line); background: var(--panel-2); padding: 4px 10px; border-radius: 99px; color: var(--ink); white-space: nowrap; }
.links a:hover { border-color: var(--accent); color: var(--accent); }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; margin-left: auto; color: var(--muted); }
.check input { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* ---------- Upcoming ---------- */
.upcoming { list-style: none; margin: 10px 0 0; padding: 0; }
.upcoming li { display: grid; grid-template-columns: 74px 1fr; gap: 10px; padding: 7px 0; border-top: 1px solid var(--line); font-size: 13.5px; }
.upcoming li:first-child { border-top: 0; }
.upcoming .when { color: var(--muted); font-variant-numeric: tabular-nums; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--c); margin-right: 6px; vertical-align: 1px; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 4px; margin: 28px 0 16px; padding: 4px; background: var(--panel-2); border-radius: 12px; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab { flex: 1 0 auto; background: none; border: 0; font: inherit; font-size: 14px; font-weight: 600; color: var(--muted); padding: 8px 14px; border-radius: 9px; cursor: pointer; white-space: nowrap; }
.tab[aria-selected="true"] { background: var(--panel); color: var(--ink); box-shadow: var(--shadow); }

/* ---------- Calendar ---------- */
.calhead { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 14px; }
.calhead h2 { font-size: 18px; text-align: center; }
.calhead h2 small { display: block; font-size: 12.5px; font-weight: 400; color: var(--muted); }
.cal { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 5px; }
.dow { font-size: 12px; color: var(--muted); text-align: center; padding: 2px 0 4px; font-weight: 600; }
.day { min-height: 96px; min-width: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 9px; padding: 6px; cursor: pointer; display: flex; flex-direction: column; gap: 3px; text-align: left; font: inherit; color: inherit; }
.day:hover { border-color: var(--accent); }
.day.out { opacity: .38; }
.day.today { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.day.sel { background: var(--accent-soft); }
.day .d { font-size: 12.5px; font-weight: 700; display: flex; justify-content: space-between; }
.day .d i { font-style: normal; font-weight: 400; color: var(--muted); font-size: 11px; }
.chip { font-size: 11px; line-height: 1.3; padding: 2px 6px; border-radius: 5px; color: #fff; background: var(--c); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chip.light { background: transparent; color: var(--muted); border: 1px dashed var(--line); }
.chip.done { opacity: .5; text-decoration: line-through; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; font-size: 12.5px; color: var(--muted); }
.legend span::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 3px; background: var(--c); margin-right: 6px; vertical-align: -1px; }

/* ---------- Syllabus ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 6px; }
select, input[type="date"], input[type="number"], input[type="search"] { font: inherit; font-size: 14px; padding: 8px 10px; border-radius: 9px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); }
input[type="search"] { flex: 1 1 200px; }
.unit-row { display: grid; grid-template-columns: 28px 1fr 170px; gap: 14px; padding: 16px 0; border-top: 1px solid var(--line); }
.unit-row:first-child { border-top: 0; }
.unit-row input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--accent); cursor: pointer; }
.unit-row h3 { font-size: 15.5px; margin: 5px 0 0; }
.unit-row .when { font-size: 13px; color: var(--muted); text-align: right; }
.unit-row .when b { display: block; color: var(--ink); font-weight: 600; }
.unit-row.is-done h3 { text-decoration: line-through; color: var(--muted); }
.group-title { font-size: 13px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .07em; margin: 22px 0 4px; }
.group-title:first-child { margin-top: 8px; }

/* ---------- Guide / tips / formulas ---------- */
.facts { display: grid; grid-template-columns: 170px 1fr; margin: 0; }
.facts dt, .facts dd { padding: 11px 0; border-top: 1px solid var(--line); margin: 0; }
.facts dt { font-weight: 600; }
.facts dt:first-of-type, .facts dt:first-of-type + dd { border-top: 0; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 12px; }
.stats div { background: var(--panel-2); border-radius: 12px; padding: 14px; }
.stats b { display: block; font-size: 24px; letter-spacing: -.02em; }
.stats span { font-size: 12.5px; color: var(--muted); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.grid-cards .card + .card { margin-top: 0; }
.card h2 { font-size: 17px; margin-bottom: 8px; }
.card h3 { font-size: 15px; }
.list { margin: 8px 0 0; padding-left: 18px; }
.list li { margin: 5px 0; }
.list.good li::marker { color: var(--biology); }
.list.bad li::marker { color: var(--exam); }

.sheet-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.pill { font: inherit; font-size: 13.5px; font-weight: 600; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 6px 14px; border-radius: 99px; cursor: pointer; }
.pill[aria-pressed="true"] { background: var(--c); border-color: var(--c); color: #fff; }
.formula-group h3 { font-size: 14px; color: var(--c); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }
.formula-group ul { list-style: none; margin: 0; padding: 0; }
.formula-group li { padding: 7px 10px; background: var(--panel-2); border-radius: 8px; margin-top: 6px; font-size: 14px; font-variant-numeric: tabular-nums; }

.form { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.form label { display: grid; gap: 6px; font-size: 13px; font-weight: 600; color: var(--muted); }

.callout { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; font-size: 13.5px; margin-top: 14px; }

footer { margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--muted); }
footer p { margin: 6px 0; }
footer .credit { margin-top: 14px; font-weight: 600; }

/* ---------- Install dialog ---------- */
.dlg { width: min(440px, calc(100% - 32px)); border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); color: var(--ink); padding: 22px; box-shadow: 0 12px 40px rgba(0, 0, 0, .25); }
.dlg[open] { position: fixed; inset: 0; margin: auto; height: fit-content; z-index: 10; }
.dlg::backdrop { background: rgba(13, 16, 22, .55); }
.dlg h2 { font-size: 18px; margin-bottom: 4px; }
.dlg p { margin: 0; }
.dlg-actions { display: flex; justify-content: flex-end; margin-top: 16px; }
.steps { margin: 14px 0 0; padding-left: 22px; }
.steps li { margin: 8px 0; }

/* ---------- Landing page ---------- */
.land { max-width: 560px; min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; justify-content: center; }
.land .brand { justify-content: center; margin-bottom: 20px; }
.land-card { text-align: center; padding: 28px 22px; }
.land-card .count { margin: 18px 0 20px; }
.land-pitch { margin: 0 auto 22px; max-width: 40ch; color: var(--muted); }
.btn.big { width: 100%; max-width: 340px; justify-content: center; font-size: 17px; padding: 14px 24px; border-radius: 12px; }
.land-card .small { margin: 12px 0 0; }
.installed-msg { display: none; margin: 0; font-weight: 600; color: var(--biology); }
.is-installed .installed-msg { display: block; }
.is-installed .land-card [data-install] { display: none; }
.land footer { text-align: center; margin-top: 24px; }

/* ---------- Mobile ---------- */
@media (max-width: 680px) {
  .count b { font-size: 30px; }
  .count { gap: 6px; }
  .day { min-height: 56px; padding: 4px; }
  .chip { font-size: 0; height: 6px; padding: 0; border-radius: 3px; }
  .chip.light { height: 6px; border: 0; background: var(--rest); }
  .unit-row { grid-template-columns: 26px 1fr; }
  .unit-row .when { grid-column: 2; text-align: left; }
  .unit-row .when b { display: inline; margin-right: 6px; }
  .facts { grid-template-columns: 1fr; }
  .facts dt { border-top: 1px solid var(--line); padding-bottom: 0; }
  .facts dd { border-top: 0; padding-top: 2px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .two { grid-template-columns: 1fr; }
  .actions .label-text { display: none; }
  .actions .primary .label-text { display: inline; }
}