/* ============================================================
   HMS — House Management System
   Design: Clean utilitarian, DM Sans, forest-green & slate
   ============================================================ */

:root {
  --green:       #1A6B3A;
  --green-light: #E8F5ED;
  --green-mid:   #2E8B57;
  --amber:       #B45309;
  --amber-light: #FEF3C7;
  --red:         #9B1C1C;
  --red-light:   #FEE2E2;
  --blue:        #1D4ED8;
  --blue-light:  #EFF6FF;

  --slate-900:   #0F172A;
  --slate-800:   #1E293B;
  --slate-700:   #334155;
  --slate-600:   #475569;
  --slate-500:   #64748B;
  --slate-400:   #94A3B8;
  --slate-300:   #CBD5E1;
  --slate-200:   #E2E8F0;
  --slate-100:   #F1F5F9;
  --slate-50:    #F8FAFC;

  --sidebar-w:   240px;
  --topbar-h:    56px;
  --radius:      8px;
  --radius-lg:   12px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow:      0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.04);
  --shadow-lg:   0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);
}

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

html { font-size: 14px; }

body {
  font-family: 'DM Sans', -apple-system, sans-serif;
  background: var(--slate-100);
  color: var(--slate-800);
  display: flex;
  min-height: 100vh;
  line-height: 1.5;
}

/* ── SIDEBAR ─────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--slate-900);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
  transition: transform .25s ease;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.brand-mark {
  width: 36px; height: 36px;
  background: var(--green);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: 'DM Mono', monospace;
  font-size: 12px; font-weight: 500;
  color: #fff;
  flex-shrink: 0;
}

.brand-name { font-size: 14px; font-weight: 600; color: #fff; display: block; }
.brand-sub  { font-size: 10px; color: var(--slate-400); display: block; letter-spacing: .04em; text-transform: uppercase; }

.sidebar-nav { flex: 1; padding: 12px 0; }

.nav-group { margin-bottom: 4px; }

.nav-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: 12px 20px 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  color: var(--slate-400);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 400;
  border-radius: 0;
  transition: background .15s, color .15s;
  border-left: 3px solid transparent;
}
.nav-link svg { width: 16px; height: 16px; flex-shrink: 0; opacity: .7; }
.nav-link:hover { background: rgba(255,255,255,.05); color: #fff; }
.nav-link:hover svg { opacity: 1; }
.nav-link.active {
  background: rgba(26,107,58,.25);
  color: #6EE7A0;
  border-left-color: var(--green-mid);
}
.nav-link.active svg { opacity: 1; }

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,.06);
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px; height: 32px;
  background: var(--green);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; color: #fff;
  flex-shrink: 0;
}
.user-details { flex: 1; min-width: 0; }
.user-name { display: block; font-size: 13px; font-weight: 500; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { display: block; font-size: 11px; color: var(--slate-500); text-transform: capitalize; }

.logout-btn {
  color: var(--slate-500);
  flex-shrink: 0;
  transition: color .15s;
}
.logout-btn svg { width: 18px; height: 18px; display: block; }
.logout-btn:hover { color: var(--red); }

/* ── MAIN CONTENT ─────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  height: var(--topbar-h);
  background: #fff;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-left { display: flex; align-items: center; gap: 14px; }
.page-title  { font-size: 16px; font-weight: 600; color: var(--slate-800); }
.topbar-date { font-size: 13px; color: var(--slate-400); font-family: 'DM Mono', monospace; }

.sidebar-toggle {
  display: none;
  background: none; border: none;
  cursor: pointer; color: var(--slate-600); padding: 4px;
}
.sidebar-toggle svg { width: 20px; height: 20px; }

.page-content { padding: 24px; flex: 1; }

/* ── ALERTS ───────────────────────────────────────────── */
.alert {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 13.5px;
  font-weight: 500;
  animation: slideDown .25s ease;
}
.alert svg { width: 18px; height: 18px; flex-shrink: 0; }
.alert-close { margin-left: auto; background: none; border: none; cursor: pointer; font-size: 18px; line-height: 1; opacity: .6; }
.alert-close:hover { opacity: 1; }
.alert-success { background: var(--green-light); color: var(--green); border: 1px solid #A7D7BB; }
.alert-error   { background: var(--red-light);   color: var(--red);   border: 1px solid #FCA5A5; }
.alert-warning { background: var(--amber-light);  color: var(--amber); border: 1px solid #FCD34D; }

@keyframes slideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }

/* ── CARDS ────────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--slate-100);
}
.card-title { font-size: 14px; font-weight: 600; color: var(--slate-700); }
.card-body  { padding: 20px; }

/* ── METRICS GRID ─────────────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.metric-card {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.metric-label { font-size: 12px; color: var(--slate-500); margin-bottom: 8px; font-weight: 500; text-transform: uppercase; letter-spacing: .04em; }
.metric-value { font-size: 24px; font-weight: 600; color: var(--slate-800); font-family: 'DM Mono', monospace; line-height: 1; }
.metric-value.green  { color: var(--green); }
.metric-value.amber  { color: var(--amber); }
.metric-value.red    { color: var(--red);   }
.metric-sub   { font-size: 12px; color: var(--slate-400); margin-top: 6px; }

/* ── TABLES ───────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
  background: var(--slate-50);
  color: var(--slate-500);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--slate-200);
  white-space: nowrap;
}
tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--slate-100);
  color: var(--slate-700);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--slate-50); }

/* ── BADGES ───────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-green  { background: var(--green-light); color: var(--green); }
.badge-amber  { background: var(--amber-light); color: var(--amber); }
.badge-red    { background: var(--red-light);   color: var(--red);   }
.badge-blue   { background: var(--blue-light);  color: var(--blue);  }
.badge-slate  { background: var(--slate-100);   color: var(--slate-600); }

/* ── BUTTONS ──────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 13.5px; font-weight: 500;
  cursor: pointer; text-decoration: none;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; }

.btn-primary   { background: var(--green); color: #fff; border-color: var(--green); }
.btn-primary:hover { background: #145A2E; }

.btn-secondary { background: #fff; color: var(--slate-700); border-color: var(--slate-300); }
.btn-secondary:hover { background: var(--slate-50); }

.btn-danger    { background: var(--red-light); color: var(--red); border-color: #FCA5A5; }
.btn-danger:hover { background: #FEE2E2; }

.btn-amber     { background: var(--amber-light); color: var(--amber); border-color: #FCD34D; }

.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-sm svg { width: 13px; height: 13px; }

/* ── FORMS ────────────────────────────────────────────── */
.form-grid     { display: grid; gap: 16px; }
.form-grid-2   { grid-template-columns: 1fr 1fr; }
.form-grid-3   { grid-template-columns: 1fr 1fr 1fr; }
.form-group    { display: flex; flex-direction: column; gap: 5px; }
.form-group.full { grid-column: 1 / -1; }

label { font-size: 12.5px; font-weight: 500; color: var(--slate-600); }
label .req { color: var(--red); margin-left: 2px; }

input[type=text], input[type=email], input[type=tel], input[type=number],
input[type=date], input[type=password], select, textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--slate-300);
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-size: 13.5px;
  color: var(--slate-800);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  appearance: none;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(26,107,58,.12);
}
select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2364748B'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; background-size: 16px; padding-right: 36px; }
textarea { resize: vertical; min-height: 80px; }

.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--green); cursor: pointer; }
.checkbox-row label { margin: 0; cursor: pointer; font-weight: 400; color: var(--slate-700); }

.form-hint { font-size: 11.5px; color: var(--slate-400); }

/* ── SECTION HEADERS ──────────────────────────────────── */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.section-title { font-size: 15px; font-weight: 600; color: var(--slate-700); }

/* ── OCCUPANCY BARS ───────────────────────────────────── */
.occ-bar { height: 5px; background: var(--slate-200); border-radius: 4px; min-width: 80px; }
.occ-fill { height: 100%; border-radius: 4px; background: var(--green); transition: width .4s ease; }
.occ-fill.amber { background: var(--amber); }
.occ-fill.red   { background: var(--red);   }

/* ── UNIT GRID (occupancy view) ───────────────────────── */
.unit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}
.unit-cell {
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 12px 10px;
  text-align: center;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  text-decoration: none;
}
.unit-cell:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.unit-cell.occupied { background: var(--green-light); border-color: #A7D7BB; }
.unit-cell.vacant   { background: #fff; border-color: var(--slate-300); border-style: dashed; }
.unit-cell.vacating { background: var(--amber-light); border-color: #FCD34D; }
.unit-num  { font-size: 15px; font-weight: 600; font-family: 'DM Mono', monospace; color: var(--slate-800); }
.unit-type { font-size: 11px; color: var(--slate-500); }
.unit-tenant { font-size: 11px; color: var(--slate-600); margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── DYNAMIC CHARGES ──────────────────────────────────── */
.charge-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; align-items: center; margin-bottom: 8px; }
.charge-row .btn-danger { padding: 6px 10px; }

/* ── SEARCH BAR ───────────────────────────────────────── */
.search-bar { display: flex; gap: 8px; margin-bottom: 16px; }
.search-bar input { max-width: 280px; }

/* ── PAGINATION ───────────────────────────────────────── */
.pagination { display: flex; gap: 4px; list-style: none; margin-top: 20px; }
.page-item .page-link {
  display: block; padding: 6px 12px;
  border: 1px solid var(--slate-300); border-radius: var(--radius);
  color: var(--slate-600); text-decoration: none; font-size: 13px;
}
.page-item.active .page-link { background: var(--green); color: #fff; border-color: var(--green); }
.page-item .page-link:hover  { background: var(--slate-100); }

/* ── MOBILE ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(calc(-1 * var(--sidebar-w))); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .sidebar-toggle { display: flex; }
  .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .page-content { padding: 16px; }
}

/* ── LOGIN PAGE ───────────────────────────────────────── */
.login-page {
  min-height: 100vh; display: flex;
  align-items: center; justify-content: center;
  background: var(--slate-900);
}
.login-card {
  width: 100%; max-width: 380px;
  background: #fff; border-radius: var(--radius-lg);
  padding: 40px 36px; box-shadow: var(--shadow-lg);
}
.login-logo {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 32px;
}
.login-title { font-size: 22px; font-weight: 700; color: var(--slate-800); }
.login-sub   { font-size: 13px; color: var(--slate-500); margin-top: 2px; }
.login-card .form-group { margin-bottom: 16px; }
.login-card .btn-primary { width: 100%; justify-content: center; padding: 10px; margin-top: 8px; }

/* ── MONEY FORMATTING ─────────────────────────────────── */
.money { font-family: 'DM Mono', monospace; }
.money-green { font-family: 'DM Mono', monospace; color: var(--green); }
.money-red   { font-family: 'DM Mono', monospace; color: var(--red); }
.money-amber { font-family: 'DM Mono', monospace; color: var(--amber); }

/* ── EMPTY STATE ──────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--slate-400);
}
.empty-state svg { width: 48px; height: 48px; margin: 0 auto 16px; display: block; opacity: .3; }
.empty-state h3  { font-size: 15px; font-weight: 500; color: var(--slate-500); margin-bottom: 8px; }
.empty-state p   { font-size: 13px; }

/* ── DETAIL ROWS ──────────────────────────────────────── */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.detail-row  { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--slate-100); font-size: 13.5px; }
.detail-row:last-child { border-bottom: none; }
.detail-label { color: var(--slate-500); font-weight: 500; }
.detail-value { color: var(--slate-800); font-weight: 400; text-align: right; }

/* ── SUMMARY BOX ──────────────────────────────────────── */
.summary-box {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 16px;
}
.summary-row { display: flex; justify-content: space-between; padding: 5px 0; font-size: 13.5px; }
.summary-row.total { border-top: 2px solid var(--slate-200); margin-top: 6px; padding-top: 10px; font-weight: 700; font-size: 15px; }

/* ── TABS ─────────────────────────────────────────────── */
.tabs { display: flex; gap: 2px; border-bottom: 2px solid var(--slate-200); margin-bottom: 20px; }
.tab {
  padding: 10px 18px; font-size: 13.5px; font-weight: 500;
  color: var(--slate-500); cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  text-decoration: none; transition: color .15s, border-color .15s;
}
.tab:hover { color: var(--slate-800); }
.tab.active { color: var(--green); border-bottom-color: var(--green); }