:root {
  --p1: #B0EFD4;
  --p2: #71E4A9;
  --p3: #4DCC87;
  --p4: #45B08C;
  --white: #FFFFFF;
  --light-grey: #EBEFF0;
  --blue-grey: #CCDADD;
  --soft-green: #C3E8BA;
  --aqua: #81DBD1;
  --teal: #00A4AB;
  --dark-teal: #00565F;
  --ink: #0E2A2D;
  --ink-soft: #4A6468;
  --border: #DDE6E8;
  --danger: #C0392B;
  --warning: #8A6200;
  --shadow: 0 1px 3px rgba(0, 86, 95, 0.07), 0 6px 18px rgba(0, 86, 95, 0.06);
  --radius: 14px;
  --sidebar-w: 232px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { min-height: 100%; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 14px;
  color: var(--ink);
  background: var(--light-grey);
  display: flex;
}
body.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 0%, rgba(255,255,255,.45), transparent 34%),
    linear-gradient(135deg, var(--p3), var(--p4) 48%, var(--dark-teal));
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
h1 { font-size: 22px; font-weight: 650; letter-spacing: 0; }
h2 { font-size: 15px; font-weight: 650; letter-spacing: 0; }

.login-card {
  width: min(440px, 100%);
  display: flex;
  flex-direction: column;
  gap: 14px;
  border: 1px solid rgba(255,255,255,.46);
  border-radius: 16px;
  padding: 22px;
  background: var(--white);
  box-shadow: 0 28px 80px rgba(0, 49, 54, .22);
}
.login-card .brand { justify-content: center; padding: 0 0 8px; text-align: center; }
.login-card .brand-icon { background: linear-gradient(135deg, var(--dark-teal), var(--p4)); box-shadow: 0 6px 16px rgba(0, 86, 95, .16); }
.login-card .brand-name { color: var(--ink); }
.login-card .brand-name strong { color: var(--p4); font-weight: 650; }
.login-card .brand-sub { color: var(--teal); opacity: 1; }
.login-card h1 { text-align: center; }

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--dark-teal) 0%, #00444C 100%);
  color: var(--white);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  min-height: 100vh;
  position: sticky;
  top: 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px 22px;
}
.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--p2), var(--p4));
  color: var(--dark-teal);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.brand-icon img {
  width: 26px;
  height: 26px;
  object-fit: contain;
  display: block;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 17px; font-weight: 400; letter-spacing: 0; }
.brand-name strong { font-weight: 750; color: var(--p1); }
.brand-sub { font-size: 11px; color: var(--aqua); opacity: .85; }
.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13.5px;
  font-weight: 500;
  text-align: left;
  transition: background .15s, color .15s;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: rgba(255, 255, 255, 0.08); color: var(--white); }
.nav-item.active {
  background: linear-gradient(90deg, rgba(113, 228, 169, .22), rgba(113, 228, 169, .08));
  color: var(--p1);
  box-shadow: inset 3px 0 0 var(--p2);
}
.sidebar-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 8px 2px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.sidebar-user { display: flex; flex-direction: column; line-height: 1.25; }
.sidebar-user-name { font-size: 13px; font-weight: 600; }
.sidebar-user-role { font-size: 11px; color: var(--aqua); }
.signout { width: 100%; justify-content: center; margin-top: 10px; }

.main {
  flex: 1;
  min-width: 0;
  min-height: 100vh;
  padding: 26px 30px;
}
.page { display: flex; flex-direction: column; gap: 18px; }
.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.page-sub { color: var(--ink-soft); font-size: 13px; margin-top: 3px; }
.page-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(204, 218, 221, 0.45);
  overflow: hidden;
}
.card-body { padding: 18px 20px; }
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--light-grey);
  flex-wrap: wrap;
}
.card-grid {
  display: grid;
  gap: 14px;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field > span, .field-inline > span {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
}
.field-inline { display: flex; align-items: center; gap: 8px; color: var(--ink-soft); font-weight: 500; }
.field-inline select { min-width: 220px; }
.input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 12px;
  background: var(--white);
  color: var(--ink);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus { border-color: var(--p3); box-shadow: 0 0 0 3px rgba(77, 204, 135, 0.18); }
textarea.input { resize: vertical; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: none;
  border-radius: 10px;
  padding: 9px 16px;
  font-size: 13.5px;
  font-weight: 600;
  transition: filter .15s, background .15s, border-color .15s;
  min-height: 38px;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary {
  background: linear-gradient(135deg, var(--p3), var(--p4));
  color: var(--white);
  box-shadow: 0 3px 10px rgba(77, 204, 135, 0.35);
}
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost {
  background: var(--white);
  color: var(--dark-teal);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--p1); border-color: var(--p2); }
.btn-sm { padding: 6px 12px; font-size: 12.5px; min-height: 31px; }
.actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th {
  text-align: left;
  font-size: 11.5px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--ink-soft);
  background: #F6F9FA;
  padding: 11px 20px;
  border-bottom: 1px solid var(--light-grey);
}
.table td {
  padding: 13px 20px;
  border-bottom: 1px solid var(--light-grey);
  font-size: 13.5px;
  vertical-align: middle;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: #FAFCFC; }
.t-right { text-align: right; }
.t-nowrap { white-space: nowrap; }
.cell-muted { color: var(--ink-soft); }
.table-empty { padding: 28px; text-align: center; color: var(--ink-soft); }
.empty-state {
  display: grid;
  gap: 6px;
  min-height: 180px;
  place-content: center;
}
.empty-state h2 { color: var(--dark-teal); }
.empty-state p { color: var(--ink-soft); }

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--dark-teal);
  background: var(--p1);
  flex-shrink: 0;
}
.avatar-mint { background: linear-gradient(135deg, var(--p2), var(--aqua)); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 650;
  border-radius: 99px;
  padding: 3px 10px;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; }
.badge-available { background: rgba(113, 228, 169, 0.25); color: #1E7A4C; }
.badge-available .dot { background: var(--p3); }
.badge-assigned { background: #FDE8E8; color: var(--danger); }
.badge-assigned .dot { background: #E05B4D; }
.badge-reserved { background: #FFF3CD; color: var(--warning); }
.badge-reserved .dot { background: #D79B00; }
.badge-teal { background: rgba(0, 164, 171, 0.12); color: var(--dark-teal); }

.alert {
  border-radius: 10px;
  padding: 11px 13px;
  font-size: 13px;
  border: 1px solid transparent;
}
.alert-success { color: #1E7A4C; background: rgba(113, 228, 169, 0.2); border-color: rgba(77, 204, 135, 0.35); }
.alert-danger { color: var(--danger); background: #FDE8E8; border-color: #F7C4C4; }
.alert a { font-weight: 700; text-decoration: underline; }

.filter-card form {
  display: flex;
  align-items: end;
  gap: 10px;
  flex-wrap: wrap;
}
.filter-card .field { min-width: min(420px, 100%); flex: 1; }
.note-cell { max-width: 520px; overflow-wrap: anywhere; color: var(--ink-soft); }
.stack { display: grid; gap: 18px; }
.narrow { max-width: 720px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; flex-wrap: wrap; margin-top: 4px; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--blue-grey); border-radius: 99px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: var(--p4); border: 2px solid transparent; background-clip: content-box; }

@media (max-width: 820px) {
  body { display: block; }
  .sidebar {
    position: static;
    width: 100%;
    min-height: auto;
  }
  .nav { flex-direction: row; overflow-x: auto; padding-bottom: 4px; }
  .nav-item { flex: 0 0 auto; }
  .sidebar-footer, .signout { display: none; }
  .main { min-height: auto; padding: 20px 16px; }
}