* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #94a3b8;
  --line: #e2e8f0;
  --brand: #0f766e;
  --brand-dark: #115e59;
  --green: #16a34a;
  --green-bg: #dcfce7;
  --orange: #d97706;
  --orange-bg: #fef3c7;
  --gray: #6b7280;
  --gray-bg: #e5e7eb;
  --red: #dc2626;
  --dirty: #111827;
  --repair: #7c3aed;
}

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 520px;
  margin: 0 auto;
  min-height: 100vh;
  padding-bottom: 48px;
}

a { color: inherit; text-decoration: none; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 14px;
  background: var(--brand);
  color: #fff;
}
.brand { font-size: 17px; font-weight: 700; }
.top-actions { display: flex; gap: 12px; font-size: 14px; }
.link { opacity: 0.92; }
.link:active { opacity: 0.6; }

/* ---------- flash ---------- */
.flash { margin: 10px 12px 0; padding: 10px 12px; border-radius: 10px; font-size: 14px; }
.flash.ok { background: var(--green-bg); color: var(--green); }
.flash.error { background: #fee2e2; color: var(--red); }

/* ---------- stats ---------- */
.stats {
  display: flex;
  margin: 12px 12px 0;
  background: var(--card);
  border-radius: 14px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  overflow: hidden;
}
.stat { flex: 1; text-align: center; padding: 12px 0; border-right: 1px solid var(--line); }
.stat:last-child { border-right: none; }
.stat .num { display: block; font-size: 20px; font-weight: 700; }
.stat .lbl { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.num.green { color: var(--green); }
.num.red { color: var(--red); }
.num.orange { color: var(--orange); }
.num.gray { color: var(--gray); }
.num.dirty { color: var(--dirty); }
.num.repair { color: var(--repair); }
.num.remaining { color: var(--brand); }

/* ---------- room grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding: 12px;
}
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  aspect-ratio: 1 / 1.15;
  background: var(--card);
  border-radius: 12px;
  padding: 10px 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: transform 0.05s;
}
.card:active { transform: scale(0.97); }
.card::before {
  content: "";
  flex: 0 1 25%;
  margin: -10px -8px 8px;
  background: var(--gray);
}
.card.st-出租::before { background: var(--red); }
.card.st-空置::before { background: var(--green); }
.card.st-预订::before { background: var(--orange); }
.card.st-脏房::before { background: var(--dirty); }
.card.st-维修::before { background: var(--repair); }
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
}
.card-label { font-size: var(--card-label-size); font-weight: 700; line-height: 1.1; color: var(--card-label-color); }
.card-days {
  width: fit-content;
  padding: 1px 5px;
  border-radius: 6px;
  background: var(--card-days-bg);
  color: var(--card-days-color);
  font-size: var(--card-days-size);
  font-weight: 700;
  text-align: center;
  line-height: 1.35;
}
.card-days.expired { background: var(--red); }
.card-days.empty { background: var(--gray-bg); color: var(--muted); }
.card-tenant {
  font-size: var(--card-tenant-size);
  font-weight: 600;
  color: var(--card-tenant-color);
  margin-top: auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- pill ---------- */
.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.pill.st-出租 { background: #fee2e2; color: var(--red); }
.pill.st-空置 { background: var(--green-bg); color: var(--green); }
.pill.st-预订 { background: var(--orange-bg); color: var(--orange); }
.pill.st-脏房 { background: var(--gray-bg); color: var(--dirty); }
.pill.st-维修 { background: #ede9fe; color: var(--repair); }

/* ---------- panels & forms ---------- */
.panel {
  background: var(--card);
  margin: 12px 12px 0;
  padding: 16px 14px;
  border-radius: 14px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.panel h3 {
  font-size: 15px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
label > input,
label > select,
label > textarea { margin-top: 4px; }

input, select, textarea {
  width: 100%;
  padding: 11px 12px;
  font-size: 16px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--brand); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.row2 label { margin-bottom: 12px; }

.btn-primary {
  display: block;
  width: 100%;
  padding: 13px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: var(--brand);
  border: none;
  border-radius: 10px;
  margin-top: 4px;
}
.btn-primary:active { background: var(--brand-dark); }
.btn-row { display: flex; gap: 10px; margin-bottom: 10px; }
.btn {
  flex: 1;
  text-align: center;
  padding: 12px;
  border-radius: 10px;
  font-size: 15px;
}
.btn-ghost { background: var(--bg); color: var(--brand); font-weight: 600; }
.btn-small {
  padding: 9px 14px;
  font-size: 13px;
  border: none;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
}

.muted { font-size: 12px; color: var(--muted); margin-top: 8px; }

/* ---------- payments ---------- */
.pay-form { padding-bottom: 6px; }
.pay-list { list-style: none; margin-top: 4px; }
.pay-list li {
  position: relative;
  padding: 10px 44px 10px 0;
  border-top: 1px solid var(--line);
}
.pay-main { display: flex; justify-content: space-between; align-items: baseline; }
.pay-date { font-size: 15px; font-weight: 600; }
.pay-amt { font-size: 15px; font-weight: 700; color: var(--brand); }
.pay-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.inline-del { position: absolute; right: 0; top: 10px; }
.del {
  padding: 6px 10px;
  font-size: 12px;
  border: 1px solid #fecaca;
  border-radius: 8px;
  background: #fff;
  color: var(--red);
}

/* ---------- users ---------- */
.user-list { list-style: none; }
.user-list li { padding: 10px 0; border-top: 1px solid var(--line); }
.user-list li:first-child { border-top: none; }
.user-info { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.user-info b { font-size: 15px; }
.user-ops { display: flex; align-items: center; gap: 10px; }
.user-reset { display: flex; gap: 8px; flex: 1; }
.user-reset input { padding: 9px 10px; font-size: 14px; }

/* ---------- login ---------- */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}
.login-box {
  width: 100%;
  background: var(--card);
  padding: 28px 22px;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
.login-box h1 { text-align: center; font-size: 22px; color: var(--brand); }
.login-box p { text-align: center; }
.login-box input { margin-bottom: 12px; }