:root {
  --bg: #0b1220;
  --bg-2: #121a2b;
  --ink: #e8eef8;
  --muted: #93a0b8;
  --card: rgba(22, 32, 51, .86);
  --line: rgba(148, 163, 184, .18);
  --accent: #fb7185;
  --accent-2: #7dd3fc;
  --shadow: 0 18px 50px rgba(0, 0, 0, .35);
  color-scheme: dark;
}
html.light {
  --bg: #f3f6fb;
  --bg-2: #ffffff;
  --ink: #142033;
  --muted: #5c6b82;
  --card: rgba(255, 255, 255, .9);
  --line: rgba(20, 32, 51, .1);
  --accent: #be123c;
  --accent-2: #1d4ed8;
  --shadow: 0 16px 40px rgba(20, 32, 51, .08);
  color-scheme: light;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  background:
    radial-gradient(900px 420px at 10% -10%, rgba(125, 211, 252, .16), transparent 60%),
    radial-gradient(700px 380px at 100% 0%, rgba(251, 113, 133, .14), transparent 55%),
    var(--bg);
  color: var(--ink);
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -.02em;
  text-decoration: none;
}
.mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #fb7185, #38bdf8);
  color: #fff;
  font-weight: 800;
}
.top nav { display: flex; gap: 6px; flex: 1; }
.top nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 650;
}
.top nav a span { margin-right: 6px; opacity: .7; }
.top nav a.active, .top nav a:hover {
  color: var(--ink);
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  text-decoration: none;
}
.who { display: flex; align-items: center; gap: 8px; }
.hello { font-size: 13px; color: var(--muted); }
button, .btn, button.primary {
  border: 0;
  border-radius: 999px;
  padding: 9px 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, #e11d48, #fb7185);
  color: #fff;
}
button.ghost, .ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
main { max-width: 1100px; margin: 0 auto; padding: 28px 18px 64px; }
.hero h1 { margin: 0 0 6px; font-size: clamp(1.8rem, 3vw, 2.6rem); letter-spacing: -.03em; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 18px; }
.card, .notice, .event {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 10px; font-size: 1.15rem; }
.row, .item { padding: 10px 0; border-bottom: 1px solid var(--line); }
.row:last-child, .item:last-child { border-bottom: 0; }
.item { display: flex; gap: 10px; align-items: center; }
.item.done span { text-decoration: line-through; opacity: .55; }
.danger { background: transparent; color: var(--accent); padding-inline: 8px; }
.day { margin: 22px 0 8px; font-weight: 750; color: var(--accent-2); }
.event { margin-bottom: 10px; border-left: 4px solid var(--accent-2); }
.notice { margin: 12px 0; }
.notice.pinned { box-shadow: inset 3px 0 0 #f59e0b, var(--shadow); }
input[type=text], input[type=password], textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--ink);
  font: inherit;
}
textarea { min-height: 120px; resize: vertical; }
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card { width: min(420px, 100%); }
.login-card h1 { margin-bottom: 0; }
.error { background: rgba(225, 29, 72, .12); color: #fb7185; padding: 10px 12px; border-radius: 10px; }
.cal-nav { display: flex; align-items: center; gap: 10px; }
.cal-nav h1 { flex: 1; margin: 0; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.filters label { border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; font-size: 13px; }
.filters label::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--dot); margin-right: 6px; }
.month { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.dow { font-size: 12px; color: var(--muted); padding: 4px; }
.daycell { min-height: 92px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 6px; }
.daycell.empty { background: transparent; border: 0; }
.daycell.today { outline: 2px solid var(--accent-2); }
.chip { font-size: 11px; margin-top: 4px; padding: 3px 5px; border-left: 3px solid var(--accent-2); border-radius: 6px; background: color-mix(in srgb, var(--ink) 6%, transparent); overflow: hidden; }
.swipe .item { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin: 8px 0; padding: 10px; }
@media (max-width: 760px) {
  .month { grid-template-columns: 1fr; }
  .dow { display: none; }
  .daycell.empty { display: none; }
}

@media (max-width: 760px) {
  .top-inner { flex-wrap: wrap; }
  .hello { display: none; }
  .top nav { order: 3; width: 100%; }
}