/* Base Theme */
:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0055a5;
  --primary-600: #004080;
  --primary-050: #e8f0fe;
  --success: #198754;
  --success-050: #e6f4ee;
  --border: #e5e7eb;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

body { background: var(--bg); color: var(--text); font-family: var(--font); }

/* Sidebar */
.sidebar {
  width: 240px;
  background-color: var(--primary);
  color: #fff;
  padding: 30px 15px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  position: fixed;
  height: 100vh;
  left: 0; top: 0;
  transition: left .25s ease;
  z-index: 1000;
}
.sidebar .logo { font-size: 20px; font-weight: 600; margin-bottom: 24px; }
.sidebar a { color: #fff; text-decoration: none; margin: 6px 0; padding: 10px 12px; border-radius: var(--radius-sm); display: flex; align-items: center; gap: 10px; }
.sidebar a:hover, .sidebar a.active { background: var(--primary-050); color: var(--primary); font-weight: 600; }

/* Overlay (mobile) */
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.3); opacity: 0; visibility: hidden; transition: .2s; z-index: 900; }
.overlay.active { opacity: 1; visibility: visible; }
.sidebar.active { left: 0; }

/* Main */
.main-content { margin-left: 240px; padding: 32px; min-height: 100vh; }
.card-style { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; margin-bottom: 24px; }
.top-bar { display: flex; align-items: center; justify-content: flex-end; margin-bottom: 20px; }
.menu-toggle { border: 1px solid var(--border); }

/* Forms & Buttons */
.form-label { font-weight: 500; }
.btn { border-radius: 8px; }
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-600); border-color: var(--primary-600); }
.btn-outline-primary { color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); color: #fff; }
.btn-success { background: #28a745; border-color: #28a745; }
.btn-success:hover { background: #1e7e34; border-color: #1e7e34; }
.btn-secondary { background: #6c757d; border-color: #6c757d; }

/* Tables */
.table-responsive { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-top: 10px; }
.table { background: var(--card); }
.table thead th { background: #343a40; color: #fff; border-color: #2c3237; }
.table td, .table th { white-space: nowrap; }
.table.table-striped tbody tr:nth-child(odd) { background: rgba(0,0,0,0.02); }
.table thead.sticky th { position: sticky; top: 0; z-index: 2; }
.table.table-hover tbody tr:hover td { background: rgba(0,85,165,0.08); }
.cell-truncate { max-width: 500px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.w-mru { width: 110px; }
.w-inst { width: 140px; }
.w-med { width: 140px; }
.w-addr { min-width: 260px; }

/* Responsive */
@media (max-width: 991px) {
  .main-content { margin-left: 0; padding: 20px; }
  .sidebar { left: -240px; }
}

/* Dark Mode */
.dark-mode { --bg: #0b1220; --card: #0f172a; --text: #e5e7eb; --muted: #9ca3af; --border: #1f2937; --primary-050: rgba(255,255,255,.1); }
.dark-mode .table thead th { background: #1f2937; border-color: #111827; }
.dark-mode .table.table-striped tbody tr:nth-child(odd) { background: rgba(255,255,255,0.03); }
.dark-mode .table.table-hover tbody tr:hover td { background: rgba(0,85,165,0.2); }

/* Tip cards */
.tip-card { border-left: 4px solid var(--primary); background: var(--primary-050); }
.tip-card.success { border-left-color: var(--success); background: var(--success-050); }
.tip-body { display:flex; gap:12px; }
.tip-icon { flex: 0 0 auto; font-size: 1.25rem; color: var(--primary); margin-top: 2px; }
.tip-card.success .tip-icon { color: var(--success); }
.tip-actions { text-align: end; }
.tip-actions .form-check { font-size: 0.9rem; }
.dark-mode .tip-card { background: rgba(255,255,255,.06); }
.dark-mode .tip-card.success { background: rgba(25,135,84,.12); }

/* Enhanced Forms */
.form-control, .form-select {
  border-color: var(--border);
  border-radius: 8px;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 .2rem rgba(0, 85, 165, 0.15);
}
::placeholder { color: var(--muted); opacity: .8; }

/* Dark Mode: forms */
.dark-mode .form-control, .dark-mode .form-select {
  background-color: var(--card);
  color: var(--text);
  border-color: var(--border);
}
.dark-mode .form-control:focus, .dark-mode .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 .2rem rgba(0, 85, 165, 0.25);
}
.dark-mode ::placeholder { color: var(--muted); }

/* Pagination */
.pagination { gap: 6px; }
.page-item .page-link {
  color: var(--primary);
  border-radius: 8px;
  border-color: var(--border);
}
.page-item .page-link:hover { background: var(--primary-050); color: var(--primary); }
.page-item.active .page-link {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.page-item.disabled .page-link { color: var(--muted); }

/* Table actions */
.table td .btn { padding: .25rem .5rem; }

/* Dark Mode: pagination */
.dark-mode .pagination { gap: 6px; }
.dark-mode .page-item .page-link {
  color: var(--text);
  border-radius: 8px;
  border-color: var(--border);
  background: transparent;
}
.dark-mode .page-item .page-link:hover { background: rgba(255,255,255,.08); color: var(--text); }
.dark-mode .page-item.active .page-link {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.dark-mode .page-item.disabled .page-link { color: var(--muted); border-color: var(--border); }

/* Dark Mode: buttons */
.dark-mode .btn-outline-primary {
  color: var(--primary);
  border-color: var(--primary);
  background: transparent;
}
.dark-mode .btn-outline-primary:hover,
.dark-mode .btn-outline-primary:focus {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.dark-mode .btn-outline-secondary {
  color: var(--text);
  border-color: var(--border);
  background: transparent;
}
.dark-mode .btn-outline-secondary:hover,
.dark-mode .btn-outline-secondary:focus {
  background: rgba(255,255,255,.08);
  color: var(--text);
  border-color: var(--border);
}
.dark-mode .btn-secondary {
  background: #334155;
  border-color: #334155;
}
.dark-mode .btn-secondary:hover,
.dark-mode .btn-secondary:focus {
  background: #3b475b;
  border-color: #3b475b;
}

/* Dark Mode: success buttons */
.dark-mode .btn-success {
  background: #1f8f3a; /* slightly brighter green for dark bg */
  border-color: #1f8f3a;
  color: #fff;
}
.dark-mode .btn-success:hover,
.dark-mode .btn-success:focus {
  background: #187530;
  border-color: #187530;
  color: #fff;
}
.dark-mode .btn-outline-success {
  color: #28a745;
  border-color: #28a745;
  background: transparent;
}
.dark-mode .btn-outline-success:hover,
.dark-mode .btn-outline-success:focus {
  background: #28a745;
  border-color: #28a745;
  color: #fff;
}
.tip-card { border-left: 4px solid var(--primary); background: var(--primary-050); }
.tip-card.success { border-left-color: var(--success); background: var(--success-050); }
.tip-body { display:flex; gap:12px; }
.tip-icon { flex: 0 0 auto; font-size: 1.25rem; color: var(--primary); margin-top: 2px; }
.tip-card.success .tip-icon { color: var(--success); }
.tip-actions { text-align: end; }
.tip-actions .form-check { font-size: 0.9rem; }
.dark-mode .tip-card { background: rgba(255,255,255,.06); }
.dark-mode .tip-card.success { background: rgba(25,135,84,.12); }

/* Mobile tweaks */
@media (max-width: 576px) {
  .card-style { padding: 14px; border-radius: 10px; }
  h3 { font-size: 1.15rem; margin-bottom: .5rem; }
  .top-bar .btn { padding: 6px 8px; font-size: .9rem; }
  .menu-toggle { padding: 6px 10px; }
  .tip-card { padding: 10px 12px; }
  .tip-body { flex-direction: column; }
  .tip-icon { font-size: 1.1rem; }
  .tip-card ul { margin: 6px 0; }
  .tip-actions { text-align: left; display: flex; align-items: center; gap: 8px; }
  .form-control, .form-select { font-size: .95rem; }
  .sidebar a { padding: 8px 10px; }
  .hide-mobile { display: none !important; }
  .cell-truncate { max-width: 180px; }
  .w-addr { min-width: 180px; }
}