:root {
  --drts-bg: #f4f7fb;
  --drts-surface: #ffffff;
  --drts-surface-2: #f8fafc;
  --drts-border: #dbe3ef;
  --drts-text: #102033;
  --drts-muted: #64748b;
  --drts-primary: #2563eb;
  --drts-primary-soft: rgba(37, 99, 235, 0.12);
  --drts-success: #16a34a;
  --drts-warning: #d97706;
  --drts-danger: #dc2626;
  --drts-dark: #0f172a;
  --drts-sidebar: #0b1530;
  --drts-sidebar-accent: #132044;
  --drts-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --drts-radius: 20px;
}

html, body {
  min-height: 100%;
}

body.bootstrap5,
body.drts-shell,
body.drts-auth,
body.drts-standalone {
  background: linear-gradient(180deg, #eef4ff 0%, var(--drts-bg) 220px);
  color: var(--drts-text);
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--drts-primary); }
a:hover { color: #1d4ed8; }

.drts-app {
  min-height: 100vh;
}

.drts-sidebar {
  background: linear-gradient(180deg, var(--drts-sidebar) 0%, #101b3d 100%);
  color: rgba(255,255,255,0.92);
  min-height: 100vh;
  padding: 1.5rem 1rem;
  position: sticky;
  top: 0;
}

.drts-brand {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 0.5rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 1.5rem;
}

.drts-brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(59,130,246,0.35), rgba(37,99,235,0.85));
  display: grid;
  place-items: center;
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.25);
  overflow: hidden;
}

.drts-brand-mark img {
  max-width: 36px;
  max-height: 36px;
}

.drts-brand-title {
  font-size: 0.9rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
}

.drts-brand-subtitle {
  margin: 0.2rem 0 0;
  color: rgba(255,255,255,0.62);
  font-size: 0.78rem;
}

.drts-sidebar-heading {
  color: rgba(255,255,255,0.52);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 1.5rem 0 0.75rem;
  padding: 0 0.65rem;
}

.drts-side-nav .nav-link {
  color: rgba(255,255,255,0.82);
  border-radius: 14px;
  padding: 0.8rem 0.95rem;
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.drts-side-nav .nav-link:hover,
.drts-side-nav .nav-link:focus {
  background: rgba(255,255,255,0.06);
  color: #fff;
}

.drts-side-nav .nav-link.active {
  background: linear-gradient(135deg, rgba(59,130,246,0.28), rgba(37,99,235,0.42));
  border-color: rgba(147,197,253,0.25);
  color: #fff;
  box-shadow: 0 10px 22px rgba(37,99,235,0.18);
}

.drts-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.32rem 0.6rem;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.72);
  border-radius: 999px;
  font-size: 0.72rem;
}

.drts-main {
  padding: 1.5rem;
}

.drts-topbar {
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.85);
  box-shadow: var(--drts-shadow);
  border-radius: var(--drts-radius);
  padding: 1rem 1.2rem;
  margin-bottom: 1.5rem;
}

.drts-page-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.02em;
}

.drts-page-subtitle {
  color: var(--drts-muted);
  margin: 0.35rem 0 0;
}

.drts-user-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  background: var(--drts-surface-2);
  border: 1px solid var(--drts-border);
  color: var(--drts-text);
  font-weight: 600;
}

.drts-user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #1d4ed8, #60a5fa);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 800;
}

.drts-card,
.card,
.panel,
.modal-content {
  border: 1px solid rgba(219,227,239,0.9);
  box-shadow: var(--drts-shadow);
  border-radius: var(--drts-radius);
  background: var(--drts-surface);
}

.drts-card-header {
  padding: 1.25rem 1.25rem 0;
}

.drts-card-body,
.card-body,
.panel-body {
  padding: 1.25rem;
}

.drts-stat-card {
  height: 100%;
}

.drts-stat-label {
  color: var(--drts-muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.drts-stat-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0.4rem 0 0;
}

.drts-stat-note {
  color: var(--drts-muted);
  margin: 0.4rem 0 0;
  font-size: 0.94rem;
}

.drts-pill-nav,
.nav-tabs {
  gap: 0.55rem;
  border-bottom: none;
}

.drts-pill-nav .nav-link,
.nav-tabs .nav-link {
  border: 1px solid var(--drts-border);
  background: var(--drts-surface-2);
  color: var(--drts-muted);
  border-radius: 999px;
  padding: 0.6rem 1rem;
  font-weight: 700;
}

.drts-pill-nav .nav-link.active,
.nav-tabs .nav-link.active {
  background: var(--drts-primary);
  border-color: var(--drts-primary);
  color: #fff;
  box-shadow: 0 10px 22px rgba(37,99,235,0.2);
}

.drts-module {
  padding: 0.5rem 0 0;
}

.drts-module-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.drts-module-title,
h2,h3 {
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
}

.drts-module-copy,
.text-muted,
.breadcrumb,
p,
li,
label,
small {
  color: var(--drts-muted);
}

.drts-table-card {
  padding: 1rem;
}

.table,
.dataTable {
  color: var(--drts-text);
}

.table > :not(caption) > * > *,
table.dataTable tbody th,
table.dataTable tbody td {
  border-color: #e8edf5;
  vertical-align: middle;
}

table.dataTable,
.dataTables_wrapper .row,
.dataTables_wrapper .col-sm-12 {
  width: 100% !important;
}

table.dataTable thead th,
.table thead th,
.bg-primary.text-white {
  background: #eff6ff !important;
  color: #1e3a8a !important;
  border-bottom: 1px solid #dbeafe !important;
  font-weight: 800;
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select,
.form-control,
.form-select,
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
  border-radius: 14px !important;
  border: 1px solid var(--drts-border) !important;
  padding: 0.65rem 0.9rem !important;
  background: #fff;
  box-shadow: none !important;
}

.form-control:focus,
.form-select:focus,
input:focus,
textarea:focus {
  border-color: rgba(37,99,235,0.45) !important;
  box-shadow: 0 0 0 0.18rem rgba(37,99,235,0.12) !important;
}

.btn,
button,
.dt-button {
  border-radius: 12px !important;
  font-weight: 700 !important;
}

.btn-primary,
.dt-button,
.login-btn {
  background: linear-gradient(135deg, #2563eb, #1d4ed8) !important;
  border-color: #2563eb !important;
  color: #fff !important;
}

.btn-outline-secondary {
  border-color: var(--drts-border) !important;
  color: var(--drts-text) !important;
}

.btn-light {
  background: var(--drts-surface-2) !important;
  border-color: var(--drts-border) !important;
}

.dataTables_wrapper .dt-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
  border-radius: 10px !important;
  border: 1px solid transparent !important;
}

.breadcrumb {
  margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  color: #94a3b8;
}

.drts-hero {
  position: relative;
  overflow: hidden;
}

.drts-hero::after {
  content: "";
  position: absolute;
  right: -100px;
  top: -100px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(96,165,250,0.24), transparent 70%);
}

.drts-checklist {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.drts-checklist li {
  padding-left: 1.6rem;
  position: relative;
  margin-bottom: 0.75rem;
}

.drts-checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--drts-success);
  font-weight: 800;
}

.drts-admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
}

.drts-admin-link {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--drts-surface);
  border: 1px solid var(--drts-border);
  border-radius: 18px;
  padding: 1.2rem;
  box-shadow: var(--drts-shadow);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.drts-admin-link:hover {
  color: inherit;
  transform: translateY(-2px);
  border-color: rgba(37,99,235,0.24);
}

.drts-admin-link h4 {
  font-size: 1.05rem;
  margin: 0 0 0.35rem;
  font-weight: 800;
}

.drts-inline-kpi {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--drts-primary-soft);
  color: var(--drts-primary);
  font-weight: 700;
}

.drts-empty-state {
  border: 1px dashed var(--drts-border);
  border-radius: 18px;
  padding: 2rem;
  background: linear-gradient(180deg, #f8fbff, #ffffff);
  text-align: center;
}

.drts-standalone-wrap {
  max-width: 1320px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.drts-auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.drts-auth-card {
  width: min(1080px, 100%);
  border-radius: 28px;
  overflow: hidden;
  background: rgba(255,255,255,0.95);
  box-shadow: 0 30px 70px rgba(15, 23, 42, 0.18);
  border: 1px solid rgba(255,255,255,0.85);
}

.drts-auth-panel {
  padding: 2.25rem;
}

.drts-auth-side {
  background: linear-gradient(160deg, #0f172a 0%, #1d4ed8 100%);
  color: #fff;
  min-height: 100%;
}

.drts-auth-side p,
.drts-auth-side li,
.drts-auth-side small {
  color: rgba(255,255,255,0.78);
}

.drts-auth-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.modal-content .modal-header,
.panel-heading,
.card-header {
  border-bottom: 1px solid #edf2f7;
  padding: 1rem 1.25rem;
  font-weight: 800;
  background: transparent;
}

.login-alert {
  border-radius: 16px;
  padding: 0.9rem 1rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  margin-bottom: 1rem;
}

@media (max-width: 991.98px) {
  .drts-sidebar {
    min-height: auto;
    position: relative;
    border-radius: 0 0 24px 24px;
  }

  .drts-main {
    padding: 1rem;
  }

  .drts-topbar {
    padding: 1rem;
  }

  .drts-page-title {
    font-size: 1.45rem;
  }
}


/* DataTables fixes */
.dataTables_wrapper .dataTables_processing {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--drts-border);
  border-radius: 18px;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.12);
}

/* Hide the sizing header DataTables creates inside the scroll body so it never appears as a duplicate header */
.dataTables_scrollBody table.dataTable thead tr {
  height: 0 !important;
}

.dataTables_scrollBody table.dataTable thead th,
.dataTables_scrollBody table.dataTable thead td {
  height: 0 !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  border-top-width: 0 !important;
  border-bottom-width: 0 !important;
  line-height: 0 !important;
}


/* DataTables cleanup */
.dataTables_scrollHead {
  display: none !important;
}

.drts-table-card .dataTables_wrapper .dt-buttons,
.drts-card .dataTables_wrapper .dt-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1rem;
}

.drts-table-card .dataTables_wrapper .dataTables_filter,
.drts-card .dataTables_wrapper .dataTables_filter {
  margin-bottom: 1rem;
}