/* ─── Design tokens ─────────────────────────────────────────────────────── */
:root {
  --bg-1:     #060913;
  --bg-2:     #0f1629;
  --glass:    rgba(255,255,255,0.06);
  --glass-hov:rgba(255,255,255,0.10);
  --stroke:   rgba(255,255,255,0.14);
  --text:     #e4f0ff;
  --muted:    #8aa0c0;
  --primary:  #4db6ff;
  --success:  #39d98a;
  --danger:   #ff6b7a;
  --warning:  #f5c451;
  --radius:   14px;
  --shadow:   0 16px 40px rgba(0,0,0,0.4);
  --sidebar-w:268px;
}

/* ─── Reset ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: "Segoe UI", "Inter", system-ui, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 12% 8%, #1a2e5a 0%, var(--bg-1) 45%, var(--bg-2) 100%);
  min-height: 100vh;
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: monospace; font-size: 0.85em; color: var(--primary); }
hr.detail-hr { border: none; border-top: 1px solid var(--stroke); margin: 8px 0; }

/* ─── App shell ─────────────────────────────────────────────────────────── */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────────────────────── */
.sidebar {
  border-right: 1px solid var(--stroke);
  background: linear-gradient(180deg, rgba(77,182,255,0.08) 0%, rgba(10,16,30,0.90) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 18px;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-logo-icon {
  flex-shrink: 0;
  border-radius: 11px;
  box-shadow: 0 4px 16px rgba(77,182,255,0.35);
  display: block;
}
.brand-logo-full {
  display: block;
  width: 100%;
  max-width: 200px;
  height: auto;
  max-height: 60px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(77,182,255,0.3));
}
.brand-name {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}
.brand-sub {
  display: block;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
/* Legacy fallback (kept in case old markup is referenced elsewhere) */
.brand-mark {
  width: 42px; height: 42px; border-radius: 11px; flex-shrink: 0;
  background: linear-gradient(145deg, #2f7dff, #4db6ff);
  color: #fff; font-weight: 700; font-size: 13px;
  display: grid; place-items: center;
  box-shadow: 0 4px 16px rgba(77,182,255,0.4);
}
.brand h1 { font-size: 15px; font-weight: 700; color: var(--text); }
.brand p  { font-size: 11px; color: var(--muted); }

.menu { display: grid; gap: 3px; flex: 1; }
.menu-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  border-radius: 10px;
  color: #c8d8f0;
  background: transparent;
  border: 1px solid transparent;
  font-size: 13.5px;
  transition: background 0.15s, border-color 0.15s;
}
.menu-icon { font-size: 15px; width: 20px; text-align: center; }
.menu-link:hover { background: var(--glass-hov); text-decoration: none; }
.menu-link.active {
  background: rgba(77,182,255,0.18);
  border-color: rgba(77,182,255,0.35);
  color: #fff;
}

.sidebar-footer {
  margin-top: auto;
  border-top: 1px solid var(--stroke);
  padding-top: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(145deg, #2f7dff, #4db6ff);
  display: grid; place-items: center;
  font-weight: 700; font-size: 14px; flex-shrink: 0;
}
.user-name { font-size: 13px; font-weight: 600; }
.user-role { font-size: 11px; color: var(--muted); }
.logout-btn {
  margin-left: auto;
  color: var(--muted);
  font-size: 16px;
  padding: 4px 6px;
  border-radius: 6px;
  transition: color 0.15s;
}
.logout-btn:hover { color: var(--danger); text-decoration: none; }

/* ─── Main area ─────────────────────────────────────────────────────────── */
.main-area { padding: 20px 24px; display: flex; flex-direction: column; gap: 16px; }

/* ─── Topbar ────────────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius);
}
.topbar-title h2 { font-size: 18px; font-weight: 700; }
.topbar-title p  { font-size: 11px; color: var(--muted); }
.topbar-user { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.mobile-menu-btn { display: none; }

/* ─── Glass card ────────────────────────────────────────────────────────── */
.glass {
  background: var(--glass);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.card { padding: 18px; }
.card h3 { font-size: 15px; margin-bottom: 14px; color: var(--text); }
.muted { color: var(--muted); font-size: 13px; }

/* ─── Page content ──────────────────────────────────────────────────────── */
.page-content { display: flex; flex-direction: column; gap: 16px; }

/* ─── Stat cards ────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}
.stat-card {
  padding: 16px 18px;
  border-radius: var(--radius);
}
.stat-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-value { font-size: 28px; font-weight: 700; margin-top: 4px; }

/* ─── Two-column grid ───────────────────────────────────────────────────── */
.grid-two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ─── Snapshot items ────────────────────────────────────────────────────── */
.snapshot-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(80px, 1fr)); gap: 10px; margin-bottom: 12px; }
.snapshot-item { text-align: center; padding: 12px 8px; border-radius: 10px; background: var(--glass); border: 1px solid var(--stroke); }
.snapshot-val  { font-size: 24px; font-weight: 700; }
.snapshot-lbl  { font-size: 11px; color: var(--muted); margin-top: 2px; }
.snapshot-link { display: block; text-decoration: none; transition: border-color 0.15s, transform 0.12s; cursor: pointer; }
.snapshot-link:hover { border-color: rgba(77,182,255,0.5); transform: translateY(-2px); text-decoration: none; }
.snapshot-item.overdue .snapshot-val      { color: var(--danger); }
.snapshot-item.partial .snapshot-val      { color: var(--warning); }
.snapshot-item.paid .snapshot-val         { color: var(--success); }
.snapshot-item.advance-paid .snapshot-val { color: var(--primary); }
.snapshot-item.upcoming .snapshot-val     { color: var(--muted); }

/* ─── Notifications list ────────────────────────────────────────────────── */
.notif-list { list-style: none; display: grid; gap: 8px; }
.notif-list li { padding: 8px 10px; border-radius: 8px; background: var(--glass); border: 1px solid var(--stroke); font-size: 13px; }
.notif-list li strong { display: block; }
.notif-list li small  { color: var(--muted); }

/* ─── Forms ─────────────────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  gap: 12px;
}
.form-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.form-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.form-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
}
.form-inline .field-group { flex: 1; min-width: 160px; }

.field-group { display: flex; flex-direction: column; gap: 4px; }
.field-group label,
label { font-size: 11px; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.04em; }
.field-hint { font-size: 11px; color: var(--muted); margin-top: 2px; }
.field-hint-box { justify-content: center; }
.hint-value { font-size: 18px; font-weight: 700; color: var(--primary); }

input, select, textarea {
  font: inherit;
  border-radius: 9px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(8,13,28,0.70);
  color: var(--text);
  padding: 9px 12px;
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea { min-height: 72px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: rgba(77,182,255,0.6);
  box-shadow: 0 0 0 3px rgba(77,182,255,0.15);
}
input:disabled, select:disabled { opacity: 0.5; cursor: not-allowed; }

.form-actions { display: flex; gap: 10px; align-items: center; padding-top: 4px; }

/* ─── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 14px;
  border-radius: 9px;
  color: var(--text);
  background: rgba(255,255,255,0.09);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  white-space: nowrap;
  transition: filter 0.15s, background 0.15s;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.1); text-decoration: none; }
.btn-primary { background: linear-gradient(145deg, #2060e0, #4db6ff); border: none; color: #fff; }
.btn-danger  { background: linear-gradient(145deg, #c0283c, #ff6b7a); border: none; color: #fff; }
.btn-sm      { padding: 5px 10px; font-size: 12px; border-radius: 7px; }
.btn-block   { width: 100%; }

/* ─── Badges ────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block; border-radius: 999px;
  padding: 3px 10px; font-size: 11px; font-weight: 600;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
}
.badge.overdue, .badge.status-overdue { background: rgba(255,107,122,0.18); border-color: rgba(255,107,122,0.4); color: #ffb3bc; }
.badge.partial                        { background: rgba(245,196,81,0.18);  border-color: rgba(245,196,81,0.4);  color: #fde8a0; }
.badge.paid                           { background: rgba(57,217,138,0.18);  border-color: rgba(57,217,138,0.4);  color: #a2f0cc; }
.badge.advance-paid                   { background: rgba(77,182,255,0.18);  border-color: rgba(77,182,255,0.4);  color: #a8d8ff; }
.badge.upcoming                       { background: rgba(255,255,255,0.10); }
.badge.status-vacant                  { background: rgba(57,217,138,0.15);  border-color: rgba(57,217,138,0.35); color: #a2f0cc; }
.badge.status-occupied                { background: rgba(255,107,122,0.15); border-color: rgba(255,107,122,0.35); color: #ffb3bc; }
.badge.status-maintenance             { background: rgba(245,196,81,0.15);  border-color: rgba(245,196,81,0.35);  color: #fde8a0; }

/* ─── Alerts ────────────────────────────────────────────────────────────── */
.alert {
  padding: 11px 14px; border-radius: 10px;
  border: 1px solid transparent; font-size: 13.5px;
}
.alert-success { background: rgba(57,217,138,0.12); border-color: rgba(57,217,138,0.3); }
.alert-error   { background: rgba(255,107,122,0.12); border-color: rgba(255,107,122,0.3); }

/* ─── Tables ────────────────────────────────────────────────────────────── */
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid rgba(255,255,255,0.07); }
th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; font-weight: 600; }
tr:hover td { background: rgba(255,255,255,0.03); }
.actions-cell { white-space: nowrap; }

/* ─── Receipt detail ────────────────────────────────────────────────────── */
.receipt-detail { font-size: 13.5px; }
.receipt-detail p { margin: 5px 0; }
.receipt-detail strong { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; display: inline-block; min-width: 130px; }

/* ─── Auth pages ────────────────────────────────────────────────────────── */
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card { width: 100%; max-width: 440px; padding: 28px; }

/* Logo on auth pages */
.auth-brand     { display: flex; justify-content: center; margin-bottom: 20px; }
.auth-logo      { display: block; max-width: 200px; height: auto; }
.auth-title     { font-size: 22px; font-weight: 700; margin: 0 0 4px; text-align: center; }
.auth-subtitle  { color: var(--muted); font-size: 13px; margin: 0 0 18px; text-align: center; }

.auth-card .form-grid { margin: 8px 0 16px; }
.auth-card .form-grid label { color: var(--muted); font-size: 12px; }
.auth-link { text-align: center; margin-top: 14px; font-size: 13px; color: var(--muted); }

/* ─── Print ─────────────────────────────────────────────────────────────── */
@media print {
  .sidebar, .topbar, .btn, .alert, .mobile-menu-btn { display: none !important; }
  .app-shell { grid-template-columns: 1fr; }
  body { background: #fff; color: #000; }
  .glass, .card, .stat-card { border: 1px solid #ccc; box-shadow: none; background: #fff; }
}

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .grid-two       { grid-template-columns: 1fr; }
  .form-grid.cols-3 { grid-template-columns: 1fr 1fr; }
  .form-grid.cols-4 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    top: 0; left: -300px;
    height: 100vh; width: 268px;
    z-index: 1000;
    transition: left 0.22s ease;
  }
  .sidebar.open { left: 0; }
  .mobile-menu-btn {
    display: inline-flex;
    background: rgba(255,255,255,0.12);
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.22);
    padding: 8px 11px;
    border-radius: 9px;
    cursor: pointer;
    font-size: 18px;
  }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid.cols-3,
  .form-grid.cols-4 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .main-area { padding: 14px 12px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .snapshot-grid { grid-template-columns: 1fr; }
}