:root {
  --bg: #f4fbff;
  --card: #ffffff;
  --ink: #0b2540;
  --muted: #4a657a;
  --accent: #0077cc;
  --accent2: #00a3a3;
  --yes: #1a7f37;
  --no: #b42318;
  --warn: #b54708;
  --pending: #8a6d00;
  --border: #cfe3f2;
  --shadow: 0 2px 12px rgba(11, 37, 64, 0.08);
  --radius: 14px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { font-size: 18px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: linear-gradient(180deg, #e8f6ff 0%, var(--bg) 40%, #fff 100%);
  min-height: 100vh;
  line-height: 1.45;
}
a { color: var(--accent); }
header.app-header {
  background: #fff;
  border-bottom: 2px solid var(--border);
  padding: 0.85rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: var(--shadow);
}
header h1 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--accent);
}
header .sub { color: var(--muted); font-size: 0.9rem; }
main { max-width: 1100px; margin: 0 auto; padding: 1rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}
.card h2 { margin: 0 0 0.75rem; font-size: 1.15rem; }
.btn {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 0.65rem 1.2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
}
.btn:hover { filter: brightness(1.05); }
.btn.secondary { background: #e8f2fa; color: var(--ink); }
.btn.yes { background: var(--yes); }
.btn.no { background: var(--no); }
.btn.warn { background: var(--warn); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.small { padding: 0.4rem 0.85rem; font-size: 0.9rem; }
input, select, textarea {
  font: inherit;
  padding: 0.55rem 0.7rem;
  border: 2px solid var(--border);
  border-radius: 10px;
  width: 100%;
  background: #fff;
}
label { display: block; font-weight: 600; margin: 0.5rem 0 0.25rem; color: var(--muted); font-size: 0.95rem; }
.row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: end; }
.row > * { flex: 1 1 140px; }
.nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
.nav-tabs button {
  border: 2px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 0.5rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
}
.nav-tabs button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
}
.badge.yes { background: #dcffe4; color: var(--yes); }
.badge.no { background: #ffe3e0; color: var(--no); }
.badge.pending { background: #fff3bf; color: var(--pending); }
.week-nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.week-nav h2 { margin: 0; font-size: 1.2rem; }
.day-col {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.65rem;
  background: #fafdff;
  margin-bottom: 0.75rem;
}
.day-col h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--accent2);
}
.shift {
  border-left: 5px solid var(--accent);
  background: #fff;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.5rem;
  border-radius: 0 10px 10px 0;
  border: 1px solid var(--border);
  border-left-width: 5px;
}
.shift .meta { color: var(--muted); font-size: 0.95rem; }
.shift .bookings { margin-top: 0.35rem; font-size: 0.95rem; }
.person {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  margin-top: 0.35rem;
}
.warn-box {
  background: #fff7e6;
  border: 2px solid #f5c26b;
  color: #7a4b00;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  margin: 0.5rem 0;
  font-size: 1rem;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { color: var(--muted); font-size: 0.85rem; }
.login-wrap {
  max-width: 420px;
  margin: 3rem auto;
}
.login-wrap input { font-size: 1.15rem; letter-spacing: 0.05em; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.big-actions { display: flex; gap: 0.75rem; margin-top: 0.75rem; }
.big-actions .btn { flex: 1; padding: 1rem; font-size: 1.15rem; }
.my-shift {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
  background: #fff;
}
.my-shift h3 { margin: 0 0 0.35rem; font-size: 1.25rem; }
.empty { color: var(--muted); padding: 1.5rem; text-align: center; }
@media (min-width: 800px) {
  .week-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
  }
  .day-col { margin-bottom: 0; min-height: 120px; }
  html { font-size: 17px; }
}