:root {
  --paper: #f3efe6;
  --ink: #1c1915;
  --muted: #5e574c;
  --pine: #1d4f3a;
  --pine-2: #163c2c;
  --clay: #a33b24;
  --card: #fffdf8;
  --line: #e4d9c8;
  --amber: #8a5a10;
  --amber-bg: #f8ecd4;
  --bad-bg: #f8e4de;
  --shadow: 0 12px 30px rgba(28, 25, 21, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 0% -10%, #e7f0ea 0%, transparent 55%),
    linear-gradient(180deg, #f7f4ee, var(--paper));
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

button, input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3 {
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}

#app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1rem 6rem;
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--pine);
  font-weight: 700;
}

.lede, .hint, .muted { color: var(--muted); }

.who {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: flex-end;
}

.tabs {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  display: flex;
  gap: 0.25rem;
  padding: 0.5rem 0.6rem calc(0.5rem + env(safe-area-inset-bottom));
  background: rgba(255, 253, 248, 0.96);
  border-top: 1px solid var(--line);
}

.tabs button {
  flex: 1;
  min-height: 44px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-weight: 650;
}

.tabs button[aria-current="page"] {
  background: var(--pine);
  color: white;
}

.card, .shift, .day {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.card, .day { padding: 1rem; }

.stack { display: grid; gap: 0.8rem; }

.toolbar, .row, .split {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.split { justify-content: space-between; }

.week-label {
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
  font-size: 1.6rem;
}

.days {
  display: grid;
  gap: 0.75rem;
}

.day h3 {
  font-size: 1rem;
  margin-bottom: 0.55rem;
}

.day-date { color: var(--muted); font-weight: 500; }

.shift {
  padding: 0.8rem 0.85rem;
  border-left: 5px solid var(--pine);
  box-shadow: none;
}

.shift.open { border-left-color: var(--clay); }
.shift + .shift { margin-top: 0.55rem; }

.shift h4 { margin: 0; font-size: 1.05rem; }
.when { margin: 0.15rem 0 0; font-variant-numeric: tabular-nums; }

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.6rem;
  padding: 0 0.55rem;
  border-radius: 999px;
  background: #e7f0ea;
  color: var(--pine-2);
  font-size: 0.78rem;
  font-weight: 700;
}

.badge.draft { background: var(--amber-bg); color: var(--amber); }
.badge.open { background: var(--bad-bg); color: var(--clay); }

.conflict {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
}

.conflict.bad { color: var(--clay); }
.conflict.warn { color: var(--amber); }

.btn, button.btn, .tabs button {
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  background: white;
}

.btn-primary { background: var(--pine); color: white; }
.btn-primary:hover { background: var(--pine-2); }
.btn-ghost { border-color: var(--line); background: transparent; }
.btn-danger { background: transparent; color: var(--clay); border-color: #efcfc6; }

label { display: grid; gap: 0.25rem; font-size: 0.88rem; font-weight: 650; }
label.inline { display: flex; align-items: center; gap: 0.4rem; }

input, select, textarea {
  min-height: 44px;
  width: 100%;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: white;
}

textarea { min-height: 88px; }

.form-grid, .window-row, .person-row {
  display: grid;
  gap: 0.55rem;
}

.banner {
  margin: 0.6rem 0;
  padding: 0.7rem 0.8rem;
  border-radius: 12px;
  background: #e7f0ea;
}

.banner.bad { background: var(--bad-bg); color: var(--clay); }
.banner.warn { background: var(--amber-bg); color: var(--amber); }

.hidden { display: none !important; }

.login-body {
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.login-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.login-card h1 { font-size: 2.4rem; margin: 0.2rem 0 0.4rem; }
.login-card .btn { width: 100%; margin-top: 0.8rem; }

details { margin-top: 0.45rem; }
summary { cursor: pointer; color: var(--pine); font-weight: 700; }

.empty { margin: 0; color: var(--muted); }

.dev-switch { min-width: 10rem; }

@media (min-width: 800px) {
  #app { padding-bottom: 2rem; }
  .tabs {
    position: static;
    border: 0;
    background: transparent;
    padding: 0 0 1rem;
    max-width: 1100px;
    margin: 0 auto;
  }
  .tabs button { flex: 0 0 auto; padding: 0 1rem; }
  .days { grid-template-columns: repeat(7, minmax(0, 1fr)); }
  .day { min-height: 12rem; }
  .form-grid { grid-template-columns: 1.4fr 1fr 0.8fr 0.8fr 1fr auto; align-items: end; }
  .window-row { grid-template-columns: 1.2fr 0.8fr 0.8fr auto; align-items: end; }
  .person-row { grid-template-columns: 1fr auto auto; align-items: center; }
  .interval-grid { grid-template-columns: 1fr 0.8fr 1fr 0.8fr; }
}