:root {
  --ks-navy: #0f172a;
  --ks-primary: #2563eb;
  --ks-primary-hover: #1d4ed8;
  --ks-primary-light: #eff6ff;
  --ks-surface: #ffffff;
  --ks-bg: #f8fafc;
  --ks-text: #0f172a;
  --ks-text-secondary: #475569;
  --ks-text-muted: #94a3b8;
  --ks-border: #e2e8f0;
  --ks-border-light: #f1f5f9;
  --ks-radius: 0.5rem;
  --ks-radius-sm: 0.375rem;
  --ks-transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  min-height: 100vh;
  background: var(--ks-bg);
  color: var(--ks-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

::selection {
  background: var(--ks-primary);
  color: #fff;
}

/* Navbar */
.navbar {
  background: var(--ks-navy);
  color: #fff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
  padding: 0.5rem 0;
}

.nav-shell,
.nav-main,
.navbar-nav,
.nav-account {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-main {
  flex: 1;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: #fff !important;
  text-decoration: none;
  padding: 0.625rem 0.75rem;
  margin-right: 0.5rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.navbar .nav-link {
  color: rgba(255, 255, 255, 0.78) !important;
  text-decoration: none;
  padding: 0.625rem 0.875rem !important;
  border-radius: 0.5rem;
  transition: color var(--ks-transition), background var(--ks-transition);
  font-size: 0.9rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus-visible {
  color: #fff !important;
  background: rgba(255, 255, 255, 0.1);
}

.navbar .nav-link.active {
  color: #fff !important;
  background: rgba(255, 255, 255, 0.16);
  box-shadow: inset 0 -2px 0 #facc15;
}

.navbar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar .nav-item {
  display: flex;
  align-items: center;
}

.navbar-text {
  color: rgba(255, 255, 255, 0.78) !important;
  font-size: 0.875rem;
}

.nav-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-dropdown-toggle::after {
  content: "";
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  opacity: 0.8;
}

.nav-dropdown::after {
  content: "";
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 0.5rem;
}

.nav-dropdown:hover::after,
.nav-dropdown:focus-within::after {
  display: block;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  z-index: 1060;
  min-width: 14rem;
  list-style: none;
  margin: 0;
  padding: 0.5rem;
  background: #fff;
  border: 1px solid var(--ks-border);
  border-radius: var(--ks-radius);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.14);
  top: calc(100% + 0.35rem);
  left: 0;
}

.nav-dropdown-menu-end {
  left: auto;
  right: 0;
}

.navbar .nav-user-menu .nav-link {
  max-width: 14rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a,
.nav-dropdown-menu button {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 40px;
  padding: 0.55rem 0.75rem;
  color: var(--ks-text);
  text-decoration: none;
  background: transparent;
  border: 0;
  text-align: left;
  font-size: 0.9rem;
  border-radius: var(--ks-radius-sm);
  transition: background var(--ks-transition), color var(--ks-transition);
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible,
.nav-dropdown-menu button:hover,
.nav-dropdown-menu button:focus-visible {
  background: var(--ks-primary-light);
  color: var(--ks-primary);
}

.nav-tabs {
  border-bottom-color: var(--ks-border);
}

.nav-tabs .nav-link {
  color: var(--ks-text-secondary);
  border-color: transparent;
  border-radius: var(--ks-radius-sm) var(--ks-radius-sm) 0 0;
}

.nav-tabs .nav-link:hover,
.nav-tabs .nav-link:focus-visible {
  color: var(--ks-primary);
  border-color: var(--ks-border-light) var(--ks-border-light) var(--ks-border);
  background: var(--ks-primary-light);
}

.nav-tabs .nav-link.active {
  color: var(--ks-text);
  background: #fff;
  border-color: var(--ks-border) var(--ks-border) #fff;
  font-weight: 600;
}

.nav-tabs .nav-link.disabled {
  color: var(--ks-text-muted);
  background: transparent;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.dashboard-kicker {
  color: var(--ks-text-secondary);
  margin-bottom: 0;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.action-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 10rem;
  padding: 1rem;
  border: 1px solid var(--ks-border);
  border-radius: var(--ks-radius);
  background: #fff;
  text-decoration: none;
  color: var(--ks-text);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.action-card:hover,
.action-card:focus-visible {
  color: var(--ks-text);
  border-color: #bfdbfe;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}

.action-card-title {
  font-weight: 700;
}

.action-card-copy {
  color: var(--ks-text-secondary);
  font-size: 0.9rem;
  margin-bottom: auto;
}

.action-card-command {
  color: var(--ks-primary);
  font-weight: 600;
  font-size: 0.875rem;
}

.iep-summary,
.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.iep-summary > div,
.summary-strip > div {
  background: #fff;
  border: 1px solid var(--ks-border);
  border-radius: 8px;
  min-width: 0;
  padding: 0.85rem 1rem;
}

.summary-label {
  color: var(--ks-text-muted);
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

/* Typography */
h1, h2, h3, h4, .h1, .h2, .h3, .h4 {
  color: var(--ks-text);
  letter-spacing: -0.02em;
  font-weight: 600;
}

h1, .h1 { font-size: 1.75rem; }
h2, .h2 { font-size: 1.375rem; }
h3, .h3 { font-size: 1.125rem; }
h4, .h4 { font-size: 1rem; }

a {
  color: var(--ks-primary);
  transition: color var(--ks-transition);
}

a:hover {
  color: var(--ks-primary-hover);
}

/* Cards */
.card {
  border-color: var(--ks-border);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition: box-shadow var(--ks-transition);
}

.card:hover {
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.card-header {
  background: transparent;
  border-bottom-color: var(--ks-border-light);
  padding: 1rem 1.25rem;
  font-weight: 600;
}

.card-body {
  padding: 1.25rem;
}

.card-footer {
  background: transparent;
  border-top-color: var(--ks-border-light);
  padding: 0.875rem 1.25rem;
}

.shadow-sm {
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04) !important;
}

.rounded {
  border-radius: var(--ks-radius) !important;
}

/* Tables */
.table {
  margin-bottom: 0;
}

.table thead th {
  border-bottom-width: 1px;
  border-bottom-color: var(--ks-border);
  color: var(--ks-text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.75rem 0.75rem;
  background: var(--ks-bg);
}

.table td {
  padding: 0.7rem 0.75rem;
  vertical-align: middle;
  border-bottom-color: var(--ks-border-light);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  background: rgba(15, 23, 42, 0.02);
}

.table-hover > tbody > tr:hover > * {
  background: var(--ks-primary-light);
}

.table-sm td,
.table-sm th {
  padding: 0.45rem 0.6rem;
}

/* Forms */
.form-control,
.form-select {
  border-color: var(--ks-border);
  border-radius: var(--ks-radius-sm);
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  transition: border-color var(--ks-transition), box-shadow var(--ks-transition);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--ks-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-control::placeholder {
  color: var(--ks-text-muted);
}

.form-label {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--ks-text-secondary);
  margin-bottom: 0.375rem;
}

.form-text {
  font-size: 0.8rem;
  color: var(--ks-text-muted);
}

.form-check-input:checked {
  background-color: var(--ks-primary);
  border-color: var(--ks-primary);
}

.form-check-input:focus {
  border-color: var(--ks-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.input-group-text {
  background: var(--ks-bg);
  border-color: var(--ks-border);
  font-size: 0.875rem;
}

/* Buttons */
.btn {
  font-weight: 500;
  border-radius: var(--ks-radius-sm);
  font-size: 0.875rem;
  padding: 0.45rem 1rem;
  transition: all var(--ks-transition);
}

.btn-sm {
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
}

.btn-lg {
  font-size: 1rem;
  padding: 0.6rem 1.5rem;
}

.btn-primary {
  background: var(--ks-primary);
  border-color: var(--ks-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--ks-primary-hover);
  border-color: var(--ks-primary-hover);
}

.btn-outline-primary {
  color: var(--ks-primary);
  border-color: var(--ks-primary);
}

.btn-outline-primary:hover {
  background: var(--ks-primary);
  border-color: var(--ks-primary);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--ks-text-secondary);
}

.btn-ghost:hover {
  background: var(--ks-bg);
  color: var(--ks-text);
}

/* Badges */
.badge {
  font-weight: 500;
  font-size: 0.75rem;
  padding: 0.25em 0.65em;
  border-radius: 999px;
}

/* Alerts */
.alert {
  border: none;
  border-radius: var(--ks-radius);
  padding: 0.875rem 1.125rem;
  font-size: 0.9rem;
}

.alert-info {
  background: var(--ks-primary-light);
  color: #1e40af;
}

.alert-dismissible .btn-close {
  padding: 1rem;
  font-size: 0.75rem;
}

/* List group */
.list-group {
  border-radius: var(--ks-radius);
  border-color: var(--ks-border);
}

.list-group-item {
  border-color: var(--ks-border-light);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
}

.list-group-item:first-child {
  border-top-left-radius: var(--ks-radius);
  border-top-right-radius: var(--ks-radius);
}

.list-group-item:last-child {
  border-bottom-left-radius: var(--ks-radius);
  border-bottom-right-radius: var(--ks-radius);
}

/* Modal / dropdown */
.dropdown-menu {
  border-color: var(--ks-border);
  border-radius: var(--ks-radius);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.14);
}

.dropdown-item {
  font-size: 0.875rem;
  padding: 0.45rem 1rem;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background: var(--ks-primary-light);
  color: var(--ks-primary);
}

/* Footer */
.footer {
  background: #fff;
  font-size: 0.825rem;
}

.footer-links a:hover {
  color: var(--ks-primary) !important;
}

/* HR */
hr {
  border-color: var(--ks-border);
  opacity: 0.6;
}

/* Code */
code {
  color: #d63384;
  font-size: 0.85em;
  background: #fdf2f8;
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
}

/* PDF embed */
.pdf-frame {
  width: 100%;
  min-height: 720px;
  border: 1px solid var(--ks-border);
  border-radius: var(--ks-radius);
}

.pdf-frame-sm {
  min-height: 420px;
}

/* Responsive tables */
@media (max-width: 767.98px) {
  .iep-summary,
  .summary-strip {
    grid-template-columns: 1fr;
  }

  .nav-shell,
  .nav-main,
  .navbar-nav,
  .nav-account {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav-main {
    width: 100%;
  }

  .navbar-brand {
    margin-right: 0.5rem;
  }

  .table-responsive-cards thead {
    display: none;
  }

  .table-responsive-cards tbody tr {
    display: block;
    margin-bottom: 0.75rem;
    border: 1px solid var(--ks-border);
    border-radius: var(--ks-radius);
    padding: 0.75rem;
    background: #fff;
  }

  .table-responsive-cards td {
    display: flex;
    justify-content: space-between;
    padding: 0.35rem 0;
    border: none;
    font-size: 0.875rem;
  }

  .table-responsive-cards td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--ks-text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
  }
}

/* Utility */
.text-muted {
  color: var(--ks-text-muted) !important;
}

.text-secondary {
  color: var(--ks-text-secondary) !important;
}

.bg-soft-primary {
  background: var(--ks-primary-light);
}

/* Transitions for interactive elements */
.btn, .nav-link, .dropdown-item, .list-group-item, .card {
  will-change: auto;
}