:root {
  --bg: #f4f1ec;
  --paper: #fffcf7;
  --ink: #1c1917;
  --muted: #78716c;
  --line: #e7e0d6;
  --today: #1c1917;
  --shadow: 0 18px 50px rgba(28, 25, 23, 0.08);
  --red-class: #9f1239;
  --red-asg: #fb7185;
  --red-soft: #fff1f2;
  --blue-class: #1d4ed8;
  --blue-asg: #93c5fd;
  --blue-soft: #eff6ff;
  --teal-class: #0f766e;
  --teal-asg: #5eead4;
  --teal-soft: #f0fdfa;
  --purple-class: #6b21a8;
  --purple-asg: #d8b4fe;
  --purple-soft: #faf5ff;
  --amber-class: #b45309;
  --amber-asg: #fcd34d;
  --amber-soft: #fffbeb;
  --green-class: #166534;
  --green-asg: #86efac;
  --green-soft: #f0fdf4;
  --slate-class: #334155;
  --slate-asg: #94a3b8;
  --slate-soft: #f1f5f9;
  --orange-class: #c2410c;
  --orange-asg: #fdba74;
  --orange-soft: #fff7ed;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; min-height: 100%; min-height: 100dvh; }
body {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  background:
    radial-gradient(1200px 600px at 10% -10%, #fff 0%, transparent 50%),
    radial-gradient(900px 500px at 100% 0%, #ece7dc 0%, transparent 45%),
    var(--bg);
  color: var(--ink);
  overscroll-behavior-y: none;
}

.app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 22px 64px;
  padding-left: max(22px, env(safe-area-inset-left));
  padding-right: max(22px, env(safe-area-inset-right));
  padding-bottom: max(64px, calc(24px + env(safe-area-inset-bottom)));
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.kicker {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 11px;
  color: var(--muted);
  margin: 0 0 6px;
}
h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0;
}
.sub { margin: 8px 0 0; color: var(--muted); font-size: 15px; }

.month-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}
.month-nav h2 {
  margin: 0;
  min-width: 210px;
  text-align: center;
  font-size: 22px;
  font-weight: 600;
}
button {
  font-family: -apple-system, "Avenir Next", "Segoe UI", sans-serif;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 16px;
  min-height: 44px;
  cursor: pointer;
  touch-action: manipulation;
}
button:hover { background: #fff; }
button.cell:hover { background: transparent; }
.cell.out:hover { background: #faf8f4; }
button.active, .chip.active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.remind-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
}
.remind-bar p { margin: 0; color: var(--muted); flex: 1; min-width: 220px; }
.remind-bar strong { color: var(--ink); }
.file-warn { color: #9f1239; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
  cursor: pointer;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
}
.swatch {
  width: 18px;
  height: 10px;
  border-radius: 99px;
  display: flex;
  overflow: hidden;
}
.swatch i { flex: 1; }
.hint {
  margin-left: auto;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 12px;
  color: var(--muted);
  align-self: center;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 18px;
  align-items: start;
}

.calendar {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}
.dow {
  background: #faf7f2;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 8px;
  text-align: center;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.dow:nth-child(7n) { border-right: none; }
.cell {
  min-width: 0;
  min-height: 118px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 8px 6px 6px;
  cursor: pointer;
  overflow: hidden;
  background: transparent;
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
  display: block;
  width: 100%;
  text-align: left;
  color: inherit;
  font: inherit;
}
.cell:nth-child(7n) { border-right: none; }
.cell.out { color: #a8a29e; background: #faf8f4; }
.cell.today .num {
  background: var(--today);
  color: #fff;
}
.cell.selected { outline: 2px solid var(--ink); outline-offset: -2px; }
.num {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
}
.pills { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.pill {
  max-width: 100%;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 10.5px;
  line-height: 1.25;
  padding: 3px 6px;
  border-radius: 6px;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pill.class.red { background: var(--red-class); }
.pill.assignment.red { background: var(--red-asg); color: #881337; }
.pill.break.red { background: var(--red-soft); color: var(--red-class); border: 1px dashed var(--red-asg); }
.pill.class.blue { background: var(--blue-class); }
.pill.assignment.blue { background: var(--blue-asg); color: #1e3a8a; }
.pill.break.blue { background: var(--blue-soft); color: var(--blue-class); border: 1px dashed var(--blue-asg); }
.pill.class.teal { background: var(--teal-class); }
.pill.assignment.teal { background: var(--teal-asg); color: #115e59; }
.pill.break.teal { background: var(--teal-soft); color: var(--teal-class); border: 1px dashed var(--teal-asg); }
.pill.class.purple { background: var(--purple-class); }
.pill.assignment.purple { background: var(--purple-asg); color: #581c87; }
.pill.break.purple { background: var(--purple-soft); color: var(--purple-class); border: 1px dashed var(--purple-asg); }
.pill.class.amber { background: var(--amber-class); }
.pill.assignment.amber { background: var(--amber-asg); color: #78350f; }
.pill.break.amber { background: var(--amber-soft); color: var(--amber-class); border: 1px dashed var(--amber-asg); }
.pill.class.green { background: var(--green-class); }
.pill.assignment.green { background: var(--green-asg); color: #14532d; }
.pill.break.green { background: var(--green-soft); color: var(--green-class); border: 1px dashed var(--green-asg); }
.pill.class.slate { background: var(--slate-class); }
.pill.assignment.slate { background: var(--slate-asg); color: #1e293b; }
.pill.break.slate { background: var(--slate-soft); color: var(--slate-class); border: 1px dashed var(--slate-asg); }
.pill.class.orange { background: var(--orange-class); }
.pill.assignment.orange { background: var(--orange-asg); color: #9a3412; }
.pill.break.orange { background: var(--orange-soft); color: var(--orange-class); border: 1px dashed var(--orange-asg); }
.more {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 11px;
  color: var(--muted);
  padding: 2px 4px;
}
.dots {
  display: none;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3px;
  margin-top: 4px;
  min-height: 8px;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: block;
}
.dot.class.red { background: var(--red-class); }
.dot.assignment.red { background: var(--red-asg); }
.dot.break.red { background: var(--red-asg); opacity: 0.45; }
.dot.class.blue { background: var(--blue-class); }
.dot.assignment.blue { background: var(--blue-asg); }
.dot.break.blue { background: var(--blue-asg); opacity: 0.45; }
.dot.class.teal { background: var(--teal-class); }
.dot.assignment.teal { background: var(--teal-asg); }
.dot.break.teal { background: var(--teal-asg); opacity: 0.45; }
.dot.class.purple { background: var(--purple-class); }
.dot.assignment.purple { background: var(--purple-asg); }
.dot.break.purple { background: var(--purple-asg); opacity: 0.45; }
.dot.class.amber { background: var(--amber-class); }
.dot.assignment.amber { background: var(--amber-asg); }
.dot.break.amber { background: var(--amber-asg); opacity: 0.45; }
.dot.class.green { background: var(--green-class); }
.dot.assignment.green { background: var(--green-asg); }
.dot.break.green { background: var(--green-asg); opacity: 0.45; }
.dot.class.slate { background: var(--slate-class); }
.dot.assignment.slate { background: var(--slate-asg); }
.dot.break.slate { background: var(--slate-asg); opacity: 0.45; }
.dot.class.orange { background: var(--orange-class); }
.dot.assignment.orange { background: var(--orange-asg); }
.dot.break.orange { background: var(--orange-asg); opacity: 0.45; }

.ios-install {
  font-family: -apple-system, "Avenir Next", sans-serif;
  font-size: 13px;
  line-height: 1.35;
  background: #1c1917;
  color: #fffcf7;
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 12px;
}

.side {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 16px;
}
.side h3 { margin: 0 0 4px; font-size: 22px; }
.side .when { color: var(--muted); margin-bottom: 16px; font-family: "Avenir Next", "Segoe UI", sans-serif; font-size: 13px; }
.card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 12px 12px 14px;
  margin-bottom: 10px;
  border-left-width: 6px;
}
.card.red.class, .card.red.break { border-left-color: var(--red-class); background: var(--red-soft); }
.card.red.assignment { border-left-color: var(--red-asg); background: #fff7f7; }
.card.blue.class, .card.blue.break { border-left-color: var(--blue-class); background: var(--blue-soft); }
.card.blue.assignment { border-left-color: var(--blue-asg); background: #f8fbff; }
.card.teal.class, .card.teal.break { border-left-color: var(--teal-class); background: var(--teal-soft); }
.card.teal.assignment { border-left-color: var(--teal-asg); background: #f3fffc; }
.card.purple.class, .card.purple.break { border-left-color: var(--purple-class); background: var(--purple-soft); }
.card.purple.assignment { border-left-color: var(--purple-asg); background: #fcf8ff; }
.card.amber.class, .card.amber.break { border-left-color: var(--amber-class); background: var(--amber-soft); }
.card.amber.assignment { border-left-color: var(--amber-asg); background: #fffdf3; }
.card.green.class, .card.green.break { border-left-color: var(--green-class); background: var(--green-soft); }
.card.green.assignment { border-left-color: var(--green-asg); background: #f7fef9; }
.card.slate.class, .card.slate.break { border-left-color: var(--slate-class); background: var(--slate-soft); }
.card.slate.assignment { border-left-color: var(--slate-asg); background: #f8fafc; }
.card.orange.class, .card.orange.break { border-left-color: var(--orange-class); background: var(--orange-soft); }
.card.orange.assignment { border-left-color: var(--orange-asg); background: #fffaf5; }
.tag {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.card h4 { margin: 0 0 6px; font-size: 16px; }
.meta { font-family: "Avenir Next", "Segoe UI", sans-serif; font-size: 13px; color: #44403c; }
.notes { margin: 8px 0 0; font-size: 14px; color: #44403c; }
.empty { color: var(--muted); font-size: 15px; }
.add-task {
  width: 100%;
  margin-bottom: 12px;
  font-weight: 600;
}
.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}
.card-actions button {
  min-height: 40px;
  padding: 6px 12px;
  font-size: 13px;
}
.card-actions .danger { color: #9f1239; }
button.primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

dialog {
  width: min(440px, calc(100vw - 24px));
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(28, 25, 23, 0.35); }
#eventForm h2 { margin: 0 0 14px; font-size: 22px; }
#eventForm label {
  display: block;
  font-family: -apple-system, "Avenir Next", sans-serif;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}
#eventForm input,
#eventForm select,
#eventForm textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  font-size: 16px;
  font-family: -apple-system, "Avenir Next", sans-serif;
  background: #fff;
  color: var(--ink);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.form-actions button { flex: 1; }

.key {
  display: flex;
  gap: 14px;
  margin-top: 8px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 12px;
  color: var(--muted);
}
.key b { font-weight: 600; color: var(--ink); }

@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: static; }
  .cell { min-height: 92px; }
  .hint { margin-left: 0; width: 100%; }
}

@media (max-width: 700px) {
  .app {
    padding-top: max(12px, env(safe-area-inset-top));
    padding-left: max(12px, env(safe-area-inset-left));
    padding-right: max(12px, env(safe-area-inset-right));
    padding-bottom: max(28px, calc(16px + env(safe-area-inset-bottom)));
  }
  .desktop-only { display: none; }
  h1 { font-size: 26px; }
  .kicker { font-size: 10px; }
  .top {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-bottom: 12px;
  }
  .month-nav {
    justify-content: space-between;
    gap: 6px;
    position: sticky;
    top: env(safe-area-inset-top);
    z-index: 5;
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(12px);
    padding: 6px 0;
  }
  .month-nav h2 {
    min-width: 0;
    flex: 1;
    font-size: 17px;
  }
  .month-nav button {
    min-width: 44px;
    padding: 8px 12px;
  }
  .remind-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 12px;
  }
  .remind-bar p { min-width: 0; font-size: 12px; }
  .remind-bar button { width: 100%; }
  .legend {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }
  .legend::-webkit-scrollbar { display: none; }
  .chip {
    flex: 0 0 auto;
    min-height: 40px;
    font-size: 12px;
  }
  .hint { display: none; }
  .calendar { border-radius: 16px; }
  .dow {
    padding: 8px 0;
    font-size: 10px;
    letter-spacing: 0.04em;
  }
  .cell {
    min-height: 52px;
    padding: 4px 2px 6px;
    user-select: none;
  }
  .num {
    width: 24px;
    height: 24px;
    margin: 0 auto 2px;
    font-size: 12px;
  }
  .pills, .more { display: none; }
  .dots { display: flex; }
  .side {
    border-radius: 16px;
    padding: 16px;
    scroll-margin-top: 72px;
  }
  .side h3 { font-size: 28px; }
  .card h4 { font-size: 15px; }
  dialog {
    width: 100vw;
    max-width: none;
    height: 100dvh;
    max-height: none;
    margin: 0;
    border-radius: 0;
    padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
  }
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(18px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: #1c1917;
  color: #fffcf7;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 14px;
  padding: 10px 16px;
  border-radius: 999px;
  z-index: 40;
  box-shadow: var(--shadow);
}
.toast[hidden] { display: none; }