html {
  font-size: 14px;
}

:root {
  --app-navbar-height: 64px;
  --app-bg: #0b0f14;
  --app-surface: #111827;
  --app-surface-2: #0f172a;
  --app-border: #1f2937;
  --app-text: #c8d1d9;
  --app-text-dim: #a6b1c2;
  --app-primary: #5feee2;
  --app-primary-strong: #3de2d3;
  --app-primary-soft: rgba(95, 238, 226, 0.16);
  --app-on-primary: #0b0f14;
  --app-bg-spot-1: rgba(95, 238, 226, 0.10);
  --app-bg-spot-2: rgba(124, 111, 255, 0.06);
  --app-sidebar-link: var(--app-text-dim);
  --app-sidebar-link-hover: var(--app-text);
  --app-sidebar-link-active: var(--app-primary);
  --app-sidebar-hover-bg: var(--app-surface-2);
  --app-sidebar-active-bg: rgba(95, 238, 226, 0.16);
  --app-sidebar-active-shadow: 0 8px 20px rgba(95, 238, 226, 0.22);
  --app-accent-weak: rgba(95, 238, 226, 0.08);
  --app-focus-ring: 0 0 0 0.15rem rgba(95, 238, 226, 0.35);
  --bs-body-bg: var(--app-bg);
  --bs-body-color: var(--app-text);
  --bs-border-color: var(--app-border);
  --bs-tertiary-bg: var(--app-surface-2);
  --bs-secondary-color: var(--app-text-dim);
  --bs-emphasis-color: var(--app-text);
  --bs-primary: var(--app-primary);
  --bs-primary-rgb: 95, 238, 226;
  --bs-link-color: var(--app-primary);
  --bs-link-hover-color: var(--app-primary-strong);
}

html[data-bs-theme="light"] {
  --app-navbar-height: 64px;
  --app-bg: #ecedf0;
  --app-surface: #ffffff;
  --app-surface-2: #f6f6f6;
  --app-border: #e3e6ea;
  --app-text: #212529;
  --app-text-dim: #6c757d;
  --app-primary: #0088cc;
  --app-primary-strong: #006fa8;
  --app-primary-soft: rgba(0, 136, 204, 0.14);
  --app-on-primary: #ffffff;
  --app-bg-spot-1: rgba(0, 136, 204, 0.10);
  --app-bg-spot-2: rgba(0, 0, 0, 0.04);
  --app-sidebar-link: #495057;
  --app-sidebar-link-hover: #212529;
  --app-sidebar-link-active: #212529;
  --app-sidebar-hover-bg: #f1f3f5;
  --app-sidebar-active-bg: rgba(0, 136, 204, 0.12);
  --app-sidebar-active-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
  --app-accent-weak: rgba(0, 136, 204, 0.10);
  --app-focus-ring: 0 0 0 0.15rem rgba(0, 136, 204, 0.25);
  --bs-body-bg: var(--app-bg);
  --bs-body-color: var(--app-text);
  --bs-border-color: var(--app-border);
  --bs-tertiary-bg: var(--app-surface-2);
  --bs-secondary-color: var(--app-text-dim);
  --bs-emphasis-color: var(--app-text);
  --bs-primary: var(--app-primary);
  --bs-primary-rgb: 0, 136, 204;
  --bs-link-color: var(--app-primary);
  --bs-link-hover-color: var(--app-primary-strong);
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: var(--app-focus-ring);
}

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

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

.btn-outline-secondary {
  color: var(--app-text);
  border-color: var(--app-border);
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
  color: var(--app-on-primary);
  background: var(--app-primary);
  border-color: var(--app-primary);
}

.text-bg-primary {
  color: var(--app-on-primary) !important;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  background: var(--app-bg);
  background-image:
    radial-gradient(900px 460px at 20% 0%, var(--app-bg-spot-1) 0%, transparent 70%),
    radial-gradient(780px 420px at 90% 10%, var(--app-bg-spot-2) 0%, transparent 68%);
  background-attachment: fixed;
  color: var(--app-text);
}

body,
.navbar,
.offcanvas,
.card,
.table,
.form-control,
.form-select,
.dropdown-menu {
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

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

.app-sidebar {
  width: 240px;
  flex: 0 0 240px;
  min-width: 240px;
}

.app-sidebar {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.60) 0%, rgba(255, 255, 255, 0.30) 100%);
  background-color: var(--bs-tertiary-bg);
}

.app-sidebar {
  height: 100vh;
  overflow: hidden;
  overflow-x: hidden;
}

.app-sidebar > nav {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  min-width: 0;
}

.app-sidebar .offcanvas-body {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  min-width: 0;
}

.app-sidebar > nav,
.app-sidebar .offcanvas-body {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.app-sidebar > nav::-webkit-scrollbar,
.app-sidebar .offcanvas-body::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.app-sidebar .nav {
  flex-direction: column;
  flex-wrap: nowrap;
  min-width: 0;
}

.app-sidebar .sidebar-section {
  margin-top: 18px;
}

.app-sidebar .sidebar-section:first-child {
  margin-top: 14px;
}

.app-sidebar .sidebar-section-title {
  padding: 0 0.25rem;
  margin: 0 0 10px 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(33, 37, 41, 0.65);
}

html[data-bs-theme="dark"] .app-sidebar .sidebar-section-title {
  color: rgba(200, 209, 217, 0.65);
}

.app-sidebar .nav-link {
  white-space: normal;
  overflow-wrap: anywhere;
}

.app-sidebar .nav-link {
  border-radius: 8px;
}

.app-sidebar .navbar-brand {
  color: var(--app-text);
}

.app-sidebar .navbar-brand:hover,
.app-sidebar .navbar-brand:focus {
  color: var(--app-text);
}

.app-sidebar .nav-link {
  color: var(--app-sidebar-link);
  padding: 0.7rem 0.9rem;
  margin: 0.22rem 0;
  position: relative;
  font-size: 1.02rem;
  font-weight: 500;
}

.app-sidebar .nav-link.sidebar-item {
  margin-left: 0.25rem;
  margin-right: 0.25rem;
}

.app-sidebar .nav-link:hover,
.app-sidebar .nav-link:focus {
  color: var(--app-sidebar-link-hover);
  background: var(--app-sidebar-hover-bg);
}

.app-sidebar .nav-link.active {
  color: var(--app-sidebar-link-active);
  background: var(--app-sidebar-active-bg);
  box-shadow: none;
}

.app-sidebar .nav-link.active::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 10px;
  bottom: 10px;
  width: 4px;
  background: var(--app-primary);
  border-radius: 999px;
}


@media (min-width: 992px) {
  .app-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    visibility: visible !important;
    transform: none !important;
    z-index: 1025;
  }

  .app-sidebar .offcanvas-header {
    border-bottom: 1px solid var(--app-border);
  }
}

.navbar,
.offcanvas {
  background: var(--app-surface);
  color: var(--app-text);
}

.navbar .navbar-toggler {
  border-color: var(--app-border);
}

.navbar .navbar-toggler:focus {
  box-shadow: var(--app-focus-ring);
}

.navbar-dark .navbar-brand,
.navbar-dark .navbar-text,
.navbar-dark .nav-link,
.offcanvas .navbar-brand,
.offcanvas .nav-link {
  color: var(--app-text);
}

.navbar-dark .nav-link.active,
.navbar-dark .nav-link:hover,
.navbar-dark .nav-link:focus,
.offcanvas .nav-link.active,
.offcanvas .nav-link:hover,
.offcanvas .nav-link:focus {
  color: var(--app-primary);
}

.offcanvas .nav-link.active {
  background: var(--app-sidebar-active-bg);
}

/* Cards */
.card {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}
.card-header {
  background: var(--app-surface-2);
  color: var(--app-text);
  border-bottom: 1px solid var(--app-border);
}
.card-body {
  color: var(--app-text);
}

/* Tables */
.table {
  --bs-table-bg: var(--app-surface);
  --bs-table-color: var(--app-text);
  --bs-table-border-color: var(--app-border);
  --bs-table-striped-bg: var(--app-surface-2);
  --bs-table-striped-color: var(--app-text);
  --bs-table-hover-bg: var(--app-accent-weak);
  --bs-table-hover-color: var(--app-text);
  color: var(--app-text);
  border-color: var(--app-border);
}
.table > :not(caption) > * > * {
  border-color: var(--app-border);
}
.table thead th {
  background: var(--app-surface-2);
  color: var(--app-text);
  border-bottom-color: var(--app-border);
}

/* Form controls */
.form-control,
.form-select {
  background: var(--app-surface);
  color: var(--app-text);
  border: 1px solid var(--app-border);
}
.form-control::placeholder {
  color: var(--app-text-dim);
  opacity: 1;
}
.form-control:focus,
.form-select:focus {
  color: var(--app-text);
  background: var(--app-surface);
  border-color: var(--app-primary);
  box-shadow: var(--app-focus-ring);
}
.form-check-input {
  background-color: var(--app-surface);
  border: 1px solid var(--app-border);
}
.form-check-input:checked {
  background-color: var(--app-primary);
  border-color: var(--app-primary);
}
.input-group-text {
  background: var(--app-surface-2);
  color: var(--app-text-dim);
  border: 1px solid var(--app-border);
}

/* Dropdowns */
.dropdown-menu {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  color: var(--app-text);
}
.dropdown-item {
  color: var(--app-text);
}
.dropdown-item:hover,
.dropdown-item:focus {
  color: var(--app-text);
  background: var(--app-surface-2);
}
.dropdown-item.active {
  color: var(--app-text);
  background: var(--app-accent-weak);
}