:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1a1d23;
  --muted: #6b7280;
  --border: #e2e5ea;
  --brand: #2f6f4f;
  --brand-dark: #24583f;
  --danger: #b3261e;
  --danger-bg: #fbeceb;
  --success: #1a7f4b;
  --success-bg: #e9f7ef;
  --warn: #9a6700;
  --warn-bg: #fff6e0;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2026;
    --text: #eceef1;
    --muted: #9aa1ac;
    --border: #2d313a;
    --brand: #4fa377;
    --brand-dark: #3d8362;
    --danger: #ef6a62;
    --danger-bg: #3a201e;
    --success: #4fd08a;
    --success-bg: #14301f;
    --warn: #e0b256;
    --warn-bg: #362a10;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--brand); }

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(16, 20, 24, 0.04);
  padding: 0.7rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar .brand {
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* Hamburger toggle — CSS-only checkbox hack, no JS in this portal */
.nav-toggle-checkbox { display: none; }

.nav-toggle-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 34px;
  height: 34px;
  margin-left: auto;
  border-radius: var(--radius);
  cursor: pointer;
}
.nav-toggle-btn:hover { background: var(--bg); }
.nav-toggle-btn span {
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 2px;
}

.topbar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  align-items: center;
  margin-left: auto;
}

.topbar nav a {
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
}

.topbar nav a:hover { background: var(--bg); }

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.4rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--border);
}

.user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
}

.user-chip {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  white-space: nowrap;
}
.user-chip strong { font-size: 0.85rem; }
.user-chip small { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.03em; }

.logout-form { display: inline; }
.logout-form button.link-button {
  background: none;
  border: none;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
  cursor: pointer;
}
.logout-form button.link-button:hover { color: var(--danger); }

@media (max-width: 760px) {
  .nav-toggle-btn { display: flex; }
  .topbar nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
  }
  .nav-toggle-checkbox:checked ~ nav { display: flex; }
  .topbar nav a { padding: 0.65rem 0.4rem; }
  .nav-user {
    margin-left: 0;
    margin-top: 0.35rem;
    padding-left: 0;
    padding-top: 0.6rem;
    border-left: none;
    border-top: 1px solid var(--border);
  }
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

.narrow { max-width: 420px; }

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

.card h2, .card h3 { margin-top: 0; }

.panel-highlight {
  border-color: var(--brand);
  background: var(--success-bg);
}

h1 { font-size: 1.4rem; }
h2 { font-size: 1.15rem; }

.flash {
  padding: 0.7rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.94rem;
}
.flash-error { background: var(--danger-bg); color: var(--danger); }
.flash-success { background: var(--success-bg); color: var(--success); }

label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin: 0.75rem 0 0.25rem;
}

input[type=text], input[type=tel], input[type=password], input[type=date],
input[type=time], input[type=number], select, textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
}

.checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}
.checkbox-row label {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 400;
  margin: 0;
}

.btn {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: var(--radius);
  background: var(--brand);
  color: #fff;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  margin-top: 0.9rem;
}
.btn:hover { background: var(--brand-dark); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg); }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.85rem; margin-top: 0; }
.btn[disabled], .btn-disabled { opacity: 0.5; pointer-events: none; }

.inline-form { display: inline-block; margin: 0 0.25rem 0.25rem 0; }

.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}
.badge-approved { background: var(--success-bg); color: var(--success); }
.badge-pending { background: var(--warn-bg); color: var(--warn); }
.badge-rejected { background: var(--danger-bg); color: var(--danger); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}
.stat-card .value { font-size: 1.6rem; font-weight: 700; }
.stat-card .label { color: var(--muted); font-size: 0.85rem; }

.muted { color: var(--muted); font-size: 0.88rem; }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}
.filter-bar > div { min-width: 140px; }
.filter-bar label { margin-top: 0; }

code {
  background: var(--bg);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.95em;
}

.center { text-align: center; }

.brand-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}
.brand-footer img { width: 18px; height: 18px; border-radius: 4px; }
.brand-footer a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: inherit;
  text-decoration: none;
}
.brand-footer a:hover { color: var(--text); text-decoration: underline; }

/* --- guest header nav (landing/login/register) --- */
.nav-guest {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}
.nav-guest a:not(.btn) {
  text-decoration: none;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius);
}
.nav-guest a:not(.btn):hover { background: var(--bg); }
.nav-guest .btn { margin-top: 0; }

@media (max-width: 480px) {
  .nav-guest a:not(.btn) { display: none; }
}

.qr-code {
  display: block;
  margin-top: 0.75rem;
  background: #fff;
  padding: 0.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

@media (max-width: 480px) {
  .btn { width: 100%; text-align: center; }
  .actions .btn { width: auto; }
}