:root {
  --bg: #f3efe6;
  --panel: #fffdf8;
  --panel-alt: #f9f2e5;
  --ink: #1b1c1e;
  --muted: #6b6f76;
  --brand: #17624d;
  --brand-soft: #d8efe5;
  --danger: #9f2f2f;
  --line: #d8d0c0;
  --shadow: 0 18px 50px rgba(33, 33, 33, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(23, 98, 77, 0.14), transparent 30%),
    linear-gradient(180deg, #efe7d8 0%, var(--bg) 46%, #ece8e0 100%);
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
button {
  border: 0;
  border-radius: 12px;
  padding: 0.8rem 1rem;
  background: var(--brand);
  color: white;
  font: inherit;
  cursor: pointer;
}
button:hover { filter: brightness(1.05); }
input, select, textarea {
  width: 100%;
  margin-top: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  font: inherit;
  background: white;
}
main { display: grid; gap: 1.3rem; }
.page-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.2rem;
}
.site-header, .hero-card, .panel, .auth-card {
  background: var(--panel);
  border: 1px solid rgba(0,0,0,0.04);
  box-shadow: var(--shadow);
  border-radius: 24px;
}
.site-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 1.1rem 1.3rem;
  margin-bottom: 1.1rem;
}
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.8rem;
  align-items: center;
}
.top-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-separator {
  color: var(--muted);
  font-weight: 600;
}
.mobile-menu {
  display: none;
  position: relative;
}
.mobile-menu summary {
  list-style: none;
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.8);
  font-weight: 600;
}
.mobile-menu summary::-webkit-details-marker {
  display: none;
}
.mobile-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 220px;
  background: var(--panel);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 0.4rem;
  z-index: 12;
}
.mobile-menu-panel a,
.mobile-menu-panel button {
  display: block;
  width: 100%;
  text-align: left;
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
}
.mobile-menu-panel a {
  color: var(--ink);
}
.mobile-menu-panel a:hover {
  background: var(--panel-alt);
  text-decoration: none;
}
.mobile-menu-panel button {
  background: transparent;
  color: var(--danger);
}
.user-menu {
  position: relative;
}
.user-menu summary {
  list-style: none;
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.8);
  font-weight: 600;
}
.user-menu summary::-webkit-details-marker {
  display: none;
}
.user-menu[open] summary {
  background: var(--brand-soft);
  border-color: #b9d7ca;
}
.user-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 220px;
  background: var(--panel);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 0.4rem;
  z-index: 10;
}
.user-menu-panel a,
.user-menu-panel button {
  display: block;
  width: 100%;
  text-align: left;
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
}
.user-menu-panel a {
  color: var(--ink);
}
.user-menu-panel a:hover {
  background: var(--panel-alt);
  text-decoration: none;
}
.user-menu-panel button {
  background: transparent;
  color: var(--danger);
}
.brand-title {
  margin: 0;
}
.eyebrow {
  margin: 0 0 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.74rem;
  color: var(--muted);
}
h1, h2, h3 { margin: 0 0 0.65rem; }
.hero-card, .panel, .auth-card { padding: 1.2rem; }
.auth-card {
  max-width: 460px;
  margin: 7vh auto;
}
.stack-form {
  display: grid;
  gap: 0.9rem;
}
.inline-form {
  display: inline;
}
.flash {
  margin-bottom: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: var(--brand-soft);
}
.flash.error {
  background: #f6dddd;
  color: #682626;
}
.install-banner {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  width: min(92vw, 420px);
  background: rgba(27, 28, 30, 0.95);
  color: #fffdf8;
  border-radius: 22px;
  padding: 0.95rem 1rem;
  box-shadow: 0 18px 50px rgba(33, 33, 33, 0.22);
  z-index: 50;
}
.install-banner[hidden] {
  display: none;
}
.install-banner p {
  margin: 0 0 0.75rem;
  line-height: 1.45;
}
.install-banner-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.7rem;
}
.install-secondary {
  background: transparent;
  border: 1px solid rgba(255, 253, 248, 0.28);
  color: #fffdf8;
}
.install-note {
  color: rgba(255, 253, 248, 0.82);
  font-size: 0.85rem;
}
.tool-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.tool-chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.75);
  padding: 0.8rem 1rem;
  border-radius: 999px;
  font-weight: 600;
}
.tool-chip.active {
  background: var(--brand);
  color: white;
  border-color: var(--brand);
}
.layout-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.3rem;
}
.layout-grid.single-right {
  grid-template-columns: 1.6fr 1fr;
}
.panel.narrow {
  max-width: 620px;
}
.calendar-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-bottom: 0.9rem;
}
.calendar {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0.45rem;
}
.calendar th {
  color: var(--muted);
  font-size: 0.82rem;
  text-align: left;
  padding-bottom: 0.4rem;
}
.calendar-day {
  vertical-align: top;
  min-height: 125px;
  background: var(--panel-alt);
  border-radius: 18px;
  padding: 0.7rem;
  width: 14.28%;
}
.calendar-day.muted {
  opacity: 0.45;
}
.calendar-day.busy {
  background: #eaf3ec;
}
.day-number {
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.day-reservations {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.45rem;
  font-size: 0.85rem;
}
.subtle {
  color: var(--muted);
  font-size: 0.8rem;
}
.rule-list {
  margin: 0.3rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.rule-list li.ok {
  color: var(--brand);
  font-weight: 600;
}
.helper-text {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}
.table-wrap {
  overflow-x: auto;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th,
.data-table td {
  padding: 0.8rem 0.6rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.danger-link {
  background: transparent;
  color: var(--danger);
  padding: 0;
}
.text-link {
  margin-right: 0.8rem;
}
@media (max-width: 900px) {
  .site-header,
  .calendar-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .top-nav {
    width: 100%;
    justify-content: flex-end;
  }
  .nav-list,
  .nav-separator,
  .user-menu {
    display: none;
  }
  .mobile-menu {
    display: block;
  }
  .layout-grid,
  .layout-grid.single-right {
    grid-template-columns: 1fr;
  }
  .calendar {
    border-spacing: 0.25rem;
  }
  .calendar-day {
    min-height: 95px;
    padding: 0.55rem;
  }
}