:root {
  --bg: #0f1419;
  --card: #1a2129;
  --border: #2c3640;
  --text: #e6e6e6;
  --muted: #9aa5b1;
  --accent: #4a90d9;
  --warn: #c0392b;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

h1 { font-size: 1.4rem; margin: 0; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
}

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.4rem 0.9rem;
  font-size: 0.95rem;
  cursor: pointer;
}
button:hover { filter: brightness(1.15); }
button.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }

.week-nav { display: flex; align-items: center; gap: 0.5rem; }
#weekLabel { font-weight: 600; min-width: 9.5rem; text-align: center; }

#accountInfo { display: flex; align-items: center; gap: 0.6rem; }
.auth-card { max-width: 34rem; margin: 1rem auto; }
.auth-modes { display: flex; gap: 0.5rem; margin-bottom: 0.8rem; }
.auth-modes .active { background: var(--accent); color: #fff; }
#authForm, .account-form { display: grid; gap: 0.8rem; }
#authForm label, .account-form label { display: grid; gap: 0.3rem; }
#authForm input, .account-form input {
  background: #222b34;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.5rem 0.6rem;
  font-size: 0.95rem;
}

.table-wrap { overflow-x: auto; }

table { border-collapse: collapse; width: 100%; }

th, td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.55rem;
  text-align: center;
  font-size: 0.92rem;
}
th { background: #222b34; font-weight: 600; }
td.day-label { text-align: left; white-space: nowrap; font-weight: 600; }
td.day-label .date { color: var(--muted); font-weight: 400; font-size: 0.82rem; margin-left: 0.35rem; }
tr.weekend td.day-label { color: var(--accent); }

.assignee {
  display: inline-block;
  border-radius: 6px;
  padding: 0.15rem 0.6rem;
  color: #fff;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}
.assignee .pref-dots { font-size: 0.72rem; margin-left: 0.3rem; opacity: 0.9; }

td.unassigned {
  background: rgba(192, 57, 43, 0.18);
  color: #ff8a7a;
  font-weight: 600;
}

.stats { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }
.stat-chip {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
  font-size: 0.85rem;
}
.stat-chip b { font-weight: 700; }

.tabs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.5rem; }
.tab {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
}
.tab.active { color: #fff; font-weight: 700; }

.cal-link {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.cal-link input {
  background: #222b34;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.25rem 0.5rem;
  font-size: 0.82rem;
  width: min(22rem, 100%);
}
.cal-link button { padding: 0.25rem 0.6rem; font-size: 0.82rem; }
.cal-download { color: var(--accent); }
.cal-link button.cal-download { color: #fff; }

.hint { color: var(--muted); font-size: 0.85rem; margin: 0.25rem 0 0.75rem; }

select {
  background: #222b34;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.25rem 0.35rem;
  font-size: 0.92rem;
  width: 100%;
}
select.blocked { border-color: var(--warn); color: #ff8a7a; }
select.high { border-color: #27ae60; }

.person-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.75rem; }
.person-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: 999px;
  padding: 0.25rem 0.5rem 0.25rem 0.8rem;
  color: #fff;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}
.person-chip button {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 50%;
  width: 1.4rem;
  height: 1.4rem;
  padding: 0;
  line-height: 1;
  font-size: 0.85rem;
}

#addPersonForm { display: flex; gap: 0.5rem; flex-wrap: wrap; }
#addPersonForm input[type="text"] {
  background: #222b34;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.4rem 0.6rem;
  font-size: 0.95rem;
}
#addPersonForm input[type="color"] {
  width: 2.6rem;
  height: 2.2rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #222b34;
  padding: 0.15rem;
}

.empty { color: var(--muted); font-style: italic; padding: 0.5rem 0; }

.toast {
  position: fixed;
  bottom: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--warn);
  color: #fff;
  border-radius: 8px;
  padding: 0.55rem 1.1rem;
  font-size: 0.92rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
}