/*!
 * nalyx — a small Bootstrap-like CSS framework
 * Grounded in the shared lab theme (lab/shared/theme.css).
 *
 * Load CSS only:  <link rel="stylesheet" href="https://nalyx.johlits.com/nalyx.min.css">
 * Load JS too:    <script src="https://nalyx.johlits.com/nalyx.min.js" defer></script>
 *
 * Theming: themes are a family x shade matrix. <html data-theme="wood">
 * selects a family (the built-in default applies when unset);
 * <html data-shade="dark"> forces a shade, otherwise the shade follows
 * prefers-color-scheme. Projects define families as token overrides:
 *   [data-theme='wood'] { --bg: ...; --surface: ...; }
 *   [data-theme='wood'][data-shade='dark'] { --bg: ...; color-scheme: dark; }
 *   @media (prefers-color-scheme: dark) {
 *     [data-theme='wood']:not([data-shade='light']) { --bg: ...; color-scheme: dark; }
 *   }
 * The family names 'light' and 'dark' are reserved: data-theme="light"|"dark"
 * still selects a shade (deprecated legacy syntax).
 * Interactive components are opt-in via data-nx-* attributes (requires nalyx.js).
 */

/* ---------- design tokens ---------- */

:root {
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, 'Cascadia Code', 'SF Mono', Menlo, Consolas, monospace;

  --bg: #eceef2;
  --surface: #ffffff;
  --surface-2: #f4f5f8;
  --surface-3: #e8ebf0;
  --hover: rgba(15, 23, 42, 0.05);
  --text: #1d2634;
  --text-muted: #56616f;
  --text-dim: #8b95a3;
  --border: #dde1e8;
  --border-strong: #c4cbd6;
  --accent: #4f46e5;
  --accent-strong: #4338ca;
  --accent-text: #4338ca;
  --accent-bg: #e8eaf9;
  --success-bg: #d8f3e3;
  --success: #177245;
  --error-bg: #fce4e2;
  --error: #b42318;
  --warning-bg: #fcedcf;
  --warning: #92580a;
  --purple-bg: #ece4fb;
  --purple: #7c3aed;
  /* filled-element variants — dark enough for white text on top */
  --success-strong: #177245;
  --error-strong: #b42318;
  --warning-strong: #92580a;
  --shadow-color: rgba(15, 23, 42, 0.10);
  --radius: 0.75rem;
  --radius-sm: 0.5rem;
  --container-max: 64rem;
  --root-max: var(--container-max);

  /* effect tokens — resolve against the active family's --accent/--surface,
     so gradients/glows/glass automatically follow any custom palette.
     color-mix degrades gracefully (no effect) on old browsers. */
  --gradient: linear-gradient(120deg, var(--accent), var(--purple, var(--accent-strong)));
  --glow: color-mix(in srgb, var(--accent) 35%, transparent);
  --glass-bg: color-mix(in srgb, var(--surface) 78%, transparent);
  --glass-border: color-mix(in srgb, var(--border-strong) 55%, transparent);

  color-scheme: light;
  font-family: var(--sans);
  line-height: 1.5;
  font-weight: 400;
  color: var(--text);
  background-color: var(--bg);
}

/* Auto dark only when no explicit shade is set — data-shade="dark" is
   already handled by the block below, and letting this match on an explicit
   shade would outrank family token blocks (specificity 0,3,0). */
@media (prefers-color-scheme: dark) {
  :root:not([data-shade]):not([data-theme='light']) {
    --bg: #0e1117;
    --surface: #161b22;
    --surface-2: #1d232c;
    --surface-3: #272e3a;
    --hover: rgba(255, 255, 255, 0.06);
    --text: #e4e8ee;
    --text-muted: #9ba5b3;
    --text-dim: #6d7684;
    --border: #2b323e;
    --border-strong: #3c4552;
    --accent: #818cf8;
    --accent-strong: #6366f1;
    --accent-text: #a5b4fc;
    --accent-bg: rgba(129, 140, 248, 0.16);
    --success-bg: rgba(52, 211, 153, 0.13);
    --success: #4ade80;
    --error-bg: rgba(248, 113, 113, 0.14);
    --error: #f87171;
    --warning-bg: rgba(251, 191, 36, 0.13);
    --warning: #fbbf24;
    --purple-bg: rgba(192, 132, 252, 0.15);
    --purple: #c084fc;
    --success-strong: #15803d;
    --error-strong: #dc2626;
    --warning-strong: #b45309;
    --shadow-color: rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}

:root[data-shade='dark'],
:root[data-theme='dark']:not([data-shade='light']) {
  --bg: #0e1117;
  --surface: #161b22;
  --surface-2: #1d232c;
  --surface-3: #272e3a;
  --hover: rgba(255, 255, 255, 0.06);
  --text: #e4e8ee;
  --text-muted: #9ba5b3;
  --text-dim: #6d7684;
  --border: #2b323e;
  --border-strong: #3c4552;
  --accent: #818cf8;
  --accent-strong: #6366f1;
  --accent-text: #a5b4fc;
  --accent-bg: rgba(129, 140, 248, 0.16);
  --success-bg: rgba(52, 211, 153, 0.13);
  --success: #4ade80;
  --error-bg: rgba(248, 113, 113, 0.14);
  --error: #f87171;
  --warning-bg: rgba(251, 191, 36, 0.13);
  --warning: #fbbf24;
  --purple-bg: rgba(192, 132, 252, 0.15);
  --purple: #c084fc;
  --success-strong: #15803d;
  --error-strong: #dc2626;
  --warning-strong: #b45309;
  --shadow-color: rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

/* ---------- base ---------- */

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

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text);
  margin: 0 0 0.5rem;
  line-height: 1.25;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--accent-text);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}

code, kbd, pre, samp {
  font-family: var(--mono);
  font-size: 0.9em;
}

code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  padding: 0.1em 0.35em;
}

pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  overflow-x: auto;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
}

img, svg, video {
  max-width: 100%;
  height: auto;
}

input:not([type='checkbox']):not([type='radio']):not([type='range']):not([type='color']),
textarea,
select {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

input:not([type='checkbox']):not([type='radio']):not([type='range']):not([type='color']):focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

button {
  font: inherit;
  color: var(--text);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

::placeholder {
  color: var(--text-dim);
}

::selection {
  background: var(--accent-bg);
}

/* ---------- layout ---------- */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
}

.container-fluid {
  width: 100%;
  padding: 0 1rem;
}

/* React-style mount point — same convention the old lab theme used.
 * Override per project with :root { --root-max: <width>; } */
#root {
  max-width: var(--root-max);
  margin: 0 auto;
  padding: 2rem 1rem;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.col {
  flex: 1 0 0%;
  min-width: 0;
}

.col-1  { flex: 0 0 calc(100% * 1 / 12 - 1rem * 11 / 12); }
.col-2  { flex: 0 0 calc(100% * 2 / 12 - 1rem * 10 / 12); }
.col-3  { flex: 0 0 calc(100% * 3 / 12 - 1rem * 9 / 12); }
.col-4  { flex: 0 0 calc(100% * 4 / 12 - 1rem * 8 / 12); }
.col-5  { flex: 0 0 calc(100% * 5 / 12 - 1rem * 7 / 12); }
.col-6  { flex: 0 0 calc(100% * 6 / 12 - 1rem * 6 / 12); }
.col-7  { flex: 0 0 calc(100% * 7 / 12 - 1rem * 5 / 12); }
.col-8  { flex: 0 0 calc(100% * 8 / 12 - 1rem * 4 / 12); }
.col-9  { flex: 0 0 calc(100% * 9 / 12 - 1rem * 3 / 12); }
.col-10 { flex: 0 0 calc(100% * 10 / 12 - 1rem * 2 / 12); }
.col-11 { flex: 0 0 calc(100% * 11 / 12 - 1rem * 1 / 12); }
.col-12 { flex: 0 0 100%; }

@media (max-width: 768px) {
  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9, .col-10, .col-11 {
    flex: 0 0 100%;
  }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font: inherit;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  user-select: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s,
              transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  background: var(--hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  border-color: var(--accent-strong);
  color: #fff;
  box-shadow: 0 1px 2px var(--shadow-color), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.btn-primary:hover {
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  border-color: var(--accent-strong);
  filter: brightness(1.12);
}

.btn-secondary {
  background: var(--surface-3);
  border-color: var(--surface-3);
}

.btn-secondary:hover {
  background: var(--border);
}

.btn-outline {
  background: transparent;
  border-color: var(--accent-strong);
  color: var(--accent-text);
}

.btn-outline:hover {
  background: var(--accent-bg);
}

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

.btn-ghost:hover {
  background: var(--hover);
}

.btn-link {
  background: none;
  border-color: transparent;
  color: var(--accent-text);
  text-decoration: underline;
}

.btn-link:hover {
  background: none;
  color: var(--accent-strong);
}

.btn-danger {
  background: var(--error-strong);
  border-color: var(--error-strong);
  color: #fff;
}

.btn-danger:hover {
  filter: brightness(1.12);
  background: var(--error-strong);
  border-color: var(--error-strong);
}

.btn-success {
  background: var(--success-strong);
  border-color: var(--success-strong);
  color: #fff;
}

.btn-success:hover {
  filter: brightness(1.12);
  background: var(--success-strong);
  border-color: var(--success-strong);
}

.btn-warning {
  background: var(--warning-strong);
  border-color: var(--warning-strong);
  color: #fff;
}

.btn-warning:hover {
  filter: brightness(1.12);
  background: var(--warning-strong);
  border-color: var(--warning-strong);
}

.btn-sm {
  padding: 0.25rem 0.6rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.75rem 1.4rem;
  font-size: 1.1rem;
}

.btn-close {
  background: none;
  border: 0;
  padding: 0.25rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
}

.btn-close:hover {
  color: var(--text);
}

.btn-group {
  display: inline-flex;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn:first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.btn-group .btn + .btn {
  margin-left: -1px;
}

/* ---------- card ---------- */

/* No overflow: hidden — it would clip .dropdown-menu / tooltips placed
   inside cards. Corner rounding on edge images is handled below instead. */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px var(--shadow-color), 0 4px 12px -2px var(--shadow-color);
  transition: box-shadow 0.2s, transform 0.2s;
}

.card-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  font-weight: 600;
}

.card-body {
  padding: 1rem;
}

.card-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.card > .card-header:first-child {
  border-radius: calc(var(--radius) - 1px) calc(var(--radius) - 1px) 0 0;
}

.card > .card-footer:last-child {
  border-radius: 0 0 calc(var(--radius) - 1px) calc(var(--radius) - 1px);
}

.card-title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card > img:first-child {
  width: 100%;
  display: block;
  border-radius: calc(var(--radius) - 1px) calc(var(--radius) - 1px) 0 0;
}

.card > img:last-child {
  border-radius: 0 0 calc(var(--radius) - 1px) calc(var(--radius) - 1px);
}

/* ---------- badge ---------- */

.badge {
  display: inline-block;
  padding: 0.15em 0.55em;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  background: var(--surface-3);
  color: var(--text);
}

.badge-accent  { background: var(--accent-bg); color: var(--accent-text); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-error   { background: var(--error-bg); color: var(--error); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-purple  { background: var(--purple-bg); color: var(--purple); }

/* ---------- avatar ---------- */

/* Works on <img> (object-fit cover) and on a plain element holding initials. */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--surface-3);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  object-fit: cover;
  vertical-align: middle;
  flex: none;
}

.avatar-sm { width: 1.5rem; height: 1.5rem; font-size: 0.7rem; }
.avatar-lg { width: 3rem; height: 3rem; font-size: 1.1rem; }
.avatar-xl { width: 4.5rem; height: 4.5rem; font-size: 1.5rem; }

/* ---------- chip ---------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.85rem;
}

.chip .btn-close {
  padding: 0;
  font-size: 0.9rem;
  line-height: 1;
}

.chip-accent {
  background: var(--accent-bg);
  border-color: transparent;
  color: var(--accent-text);
}

/* ---------- empty state ---------- */

.empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-icon {
  display: block;
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: 0.75rem;
  opacity: 0.55;
}

.empty-title {
  margin: 0 0 0.35rem;
  color: var(--text);
  font-size: 1.1rem;
}

/* ---------- alert ---------- */

.alert {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert .btn-close {
  margin-left: auto;
  flex-shrink: 0;
}

.alert-accent  { background: var(--accent-bg);  border-color: transparent; color: var(--accent-text); }
.alert-success { background: var(--success-bg); border-color: transparent; color: var(--success); }
.alert-error   { background: var(--error-bg);   border-color: transparent; color: var(--error); }
.alert-warning { background: var(--warning-bg); border-color: transparent; color: var(--warning); }
.alert-purple  { background: var(--purple-bg);  border-color: transparent; color: var(--purple); }

/* ---------- forms ---------- */

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.form-control,
.form-select {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
}

.form-control:disabled,
.form-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

textarea.form-control {
  min-height: 5rem;
  resize: vertical;
}

.form-text {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.form-control.is-valid,
.form-select.is-valid {
  border-color: var(--success-strong);
}

.form-control.is-invalid,
.form-select.is-invalid {
  border-color: var(--error-strong);
}

.form-control.is-valid:focus-visible,
.form-select.is-valid:focus-visible {
  border-color: var(--success-strong);
  outline-color: var(--success);
}

.form-control.is-invalid:focus-visible,
.form-select.is-invalid:focus-visible {
  border-color: var(--error-strong);
  outline-color: var(--error);
}

.valid-feedback,
.invalid-feedback {
  display: none;
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.valid-feedback { color: var(--success); }
.invalid-feedback { color: var(--error); }

.is-valid ~ .valid-feedback,
.is-invalid ~ .invalid-feedback {
  display: block;
}

.form-control-sm {
  padding: 0.25rem 0.6rem;
  font-size: 0.85rem;
}

.form-control-lg {
  padding: 0.75rem 1rem;
  font-size: 1.1rem;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-check input {
  margin: 0;
}

.form-group {
  margin-bottom: 1rem;
}

.input-group {
  display: flex;
}

.input-group .form-control,
.input-group .form-select {
  border-radius: 0;
}

.input-group > :first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.input-group > :last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.input-group > * + * {
  margin-left: -1px;
}

.input-group-text {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* Toggle switch — <label class="form-switch"><input type="checkbox"> Label</label> */
.form-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.form-switch input[type='checkbox'] {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 2.4rem;
  height: 1.3rem;
  margin: 0;
  flex: none;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface-3);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.form-switch input[type='checkbox']::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0.15rem;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: var(--surface);
  box-shadow: 0 1px 3px var(--shadow-color);
  transform: translateY(-50%);
  transition: left 0.15s;
}

.form-switch input[type='checkbox']:checked {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.form-switch input[type='checkbox']:checked::before {
  left: calc(100% - 1.1rem);
}

.form-switch input[type='checkbox']:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Themed range slider */
input[type='range'] {
  appearance: none;
  -webkit-appearance: none;
  height: 0.35rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: var(--surface-3);
  cursor: pointer;
}

input[type='range']::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--accent-strong);
  border: 2px solid var(--surface);
  box-shadow: 0 1px 3px var(--shadow-color);
}

input[type='range']::-moz-range-thumb {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--accent-strong);
  border: 2px solid var(--surface);
  box-shadow: 0 1px 3px var(--shadow-color);
}

input[type='range']::-moz-range-track {
  background: transparent;
}

/* ---------- navbar ---------- */

.navbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.navbar-sticky {
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}

.navbar-brand:hover {
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-nav .nav-link {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.navbar-nav .nav-link:hover {
  background: var(--hover);
  color: var(--text);
  text-decoration: none;
}

.navbar-nav .nav-link.active {
  color: var(--accent-text);
  background: var(--accent-bg);
}

/* ---------- collapse ---------- */

.collapse {
  display: none;
}

.collapse.show {
  display: block;
}

/* ---------- accordion (css-only, via <details>) ---------- */

.accordion {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.accordion details + details {
  border-top: 1px solid var(--border);
}

.accordion summary {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary::after {
  content: '';
  width: 0.5rem;
  height: 0.5rem;
  margin-left: auto;
  flex: none;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  transition: transform 0.15s;
}

.accordion details[open] > summary::after {
  transform: rotate(-135deg);
}

.accordion summary:hover {
  background: var(--hover);
}

.accordion-body {
  padding: 0 1rem 1rem;
  color: var(--text-muted);
}

/* ---------- dropdown ---------- */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.25rem);
  left: 0;
  z-index: 200;
  min-width: 10rem;
  padding: 0.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px var(--shadow-color);
  display: none;
}

.dropdown-menu.show,
.dropdown.open .dropdown-menu {
  display: block;
}

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

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.4rem 0.75rem;
  border: 0;
  background: none;
  border-radius: 0.35rem;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.dropdown-item:hover {
  background: var(--hover);
  text-decoration: none;
}

.dropdown-divider {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 0.35rem 0;
}

/* ---------- tabs ---------- */

.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.tab-link {
  padding: 0.5rem 1rem;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  margin-bottom: -1px;
}

.tab-link:hover {
  color: var(--text);
}

.tab-link.active {
  color: var(--accent-text);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* ---------- modal ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 400;
  display: none;
}

.modal-backdrop.show {
  display: block;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow-y: auto;
}

.modal.show {
  display: flex;
}

.modal-dialog {
  width: 100%;
  max-width: 32rem;
}

.modal-dialog-lg {
  max-width: 48rem;
}

.modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 40px var(--shadow-color);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  margin: 0;
  font-size: 1.15rem;
}

.modal-body {
  padding: 1rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 1rem;
  border-top: 1px solid var(--border);
}

body.modal-open {
  overflow: hidden;
}

/* ---------- toast ---------- */

.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 600;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: min(24rem, calc(100vw - 2rem));
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px var(--shadow-color);
  animation: nx-toast-in 0.2s ease-out;
}

.toast .btn-close {
  margin-left: auto;
  flex-shrink: 0;
}

.toast-success { border-left: 3px solid var(--success); }
.toast-error   { border-left: 3px solid var(--error); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-accent  { border-left: 3px solid var(--accent); }

@keyframes nx-toast-in {
  from { opacity: 0; transform: translateY(-0.5rem); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- table ---------- */

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.table th {
  font-weight: 600;
  color: var(--text-muted);
}

.table-striped tbody tr:nth-child(odd) {
  background: var(--surface-2);
}

.table-hover tbody tr:hover {
  background: var(--hover);
}

/* Wrap wide tables so they scroll horizontally instead of breaking layout. */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-responsive .table {
  margin-bottom: 0;
}

/* ---------- list group ---------- */

.list-group {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.list-group-item {
  display: block;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.list-group-item:last-child {
  border-bottom: 0;
}

.list-group-item-action:hover {
  background: var(--hover);
  text-decoration: none;
}

.list-group-item.active {
  background: var(--accent-bg);
  color: var(--accent-text);
  font-weight: 600;
}

/* ---------- pagination ---------- */

.pagination {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-link {
  display: block;
  padding: 0.4rem 0.8rem;
  margin-left: -1px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent-text);
}

.page-item:first-child .page-link {
  margin-left: 0;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.page-item:last-child .page-link {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-link:hover {
  background: var(--hover);
  text-decoration: none;
}

.page-item.active .page-link {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #fff;
}

.page-item.disabled .page-link {
  color: var(--text-dim);
  background: var(--surface-2);
  pointer-events: none;
}

/* ---------- breadcrumb ---------- */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  font-size: 0.9rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--text-dim);
}

.breadcrumb-item a {
  color: var(--accent-text);
}

.breadcrumb-item.active {
  color: var(--text-muted);
}

/* ---------- progress ---------- */

.progress {
  height: 0.75rem;
  background: var(--surface-3);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  border-radius: 999px;
  transition: width 0.2s;
}

/* ---------- spinner ---------- */

.spinner {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent-strong);
  border-radius: 50%;
  animation: nx-spin 0.7s linear infinite;
}

.spinner-sm {
  width: 1rem;
  height: 1rem;
}

@keyframes nx-spin {
  to { transform: rotate(360deg); }
}

/* ---------- skeleton / loading ---------- */

/* Shimmering placeholder block — size it via the container or utilities. */
.skeleton {
  display: block;
  min-height: 1em;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg,
    var(--surface-3) 25%, var(--surface-2) 50%, var(--surface-3) 75%);
  background-size: 200% 100%;
  animation: nx-skeleton 1.4s ease-in-out infinite;
}

@keyframes nx-skeleton {
  to { background-position: -200% 0; }
}

/* Busy button — <button class="btn btn-primary is-loading">Saving…</button> */
.btn.is-loading {
  pointer-events: none;
  opacity: 0.75;
}

.btn.is-loading::before {
  content: '';
  width: 0.9em;
  height: 0.9em;
  flex: none;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: nx-spin 0.7s linear infinite;
}

/* ---------- tooltip (css-only) ---------- */

[data-tooltip] {
  position: relative;
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 0.4rem);
  left: 50%;
  transform: translateX(-50%);
  padding: 0.3rem 0.6rem;
  background: var(--text);
  color: var(--bg);
  font-size: 0.8rem;
  border-radius: 0.35rem;
  white-space: nowrap;
  z-index: 300;
  pointer-events: none;
}

/* ---------- utilities ---------- */

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.align-items-start { align-items: flex-start !important; }
.align-items-center { align-items: center !important; }
.align-items-end { align-items: flex-end !important; }
.justify-content-start { justify-content: flex-start !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-end { justify-content: flex-end !important; }
.justify-content-between { justify-content: space-between !important; }

.gap-0 { gap: 0 !important; }       .gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }  .gap-3 { gap: 1rem !important; }
.gap-4 { gap: 1.5rem !important; }  .gap-5 { gap: 3rem !important; }

.m-0 { margin: 0 !important; }        .m-1 { margin: 0.25rem !important; }
.m-2 { margin: 0.5rem !important; }   .m-3 { margin: 1rem !important; }
.m-4 { margin: 1.5rem !important; }   .m-5 { margin: 3rem !important; }
.mt-0 { margin-top: 0 !important; }       .mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }  .mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }  .mt-5 { margin-top: 3rem !important; }
.mb-0 { margin-bottom: 0 !important; }       .mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }  .mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }  .mb-5 { margin-bottom: 3rem !important; }
.ms-0 { margin-left: 0 !important; }       .ms-1 { margin-left: 0.25rem !important; }
.ms-2 { margin-left: 0.5rem !important; }  .ms-3 { margin-left: 1rem !important; }
.ms-4 { margin-left: 1.5rem !important; }  .ms-5 { margin-left: 3rem !important; }
.me-0 { margin-right: 0 !important; }       .me-1 { margin-right: 0.25rem !important; }
.me-2 { margin-right: 0.5rem !important; }  .me-3 { margin-right: 1rem !important; }
.me-4 { margin-right: 1.5rem !important; }  .me-5 { margin-right: 3rem !important; }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }
.my-0 { margin-top: 0 !important; margin-bottom: 0 !important; }
.my-1 { margin-top: 0.25rem !important; margin-bottom: 0.25rem !important; }
.my-2 { margin-top: 0.5rem !important; margin-bottom: 0.5rem !important; }
.my-3 { margin-top: 1rem !important; margin-bottom: 1rem !important; }
.my-4 { margin-top: 1.5rem !important; margin-bottom: 1.5rem !important; }
.my-5 { margin-top: 3rem !important; margin-bottom: 3rem !important; }

.p-0 { padding: 0 !important; }        .p-1 { padding: 0.25rem !important; }
.p-2 { padding: 0.5rem !important; }   .p-3 { padding: 1rem !important; }
.p-4 { padding: 1.5rem !important; }   .p-5 { padding: 3rem !important; }
.px-0 { padding-left: 0 !important; padding-right: 0 !important; }
.px-1 { padding-left: 0.25rem !important; padding-right: 0.25rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
.px-5 { padding-left: 3rem !important; padding-right: 3rem !important; }
.py-0 { padding-top: 0 !important; padding-bottom: 0 !important; }
.py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

.text-start { text-align: left !important; }
.text-center { text-align: center !important; }
.text-end { text-align: right !important; }
.text-muted { color: var(--text-muted) !important; }
.text-dim { color: var(--text-dim) !important; }
.text-accent { color: var(--accent-text) !important; }
.text-success { color: var(--success) !important; }
.text-error { color: var(--error) !important; }
.text-warning { color: var(--warning) !important; }

.fw-normal { font-weight: 400 !important; }
.fw-medium { font-weight: 500 !important; }
.fw-semibold { font-weight: 600 !important; }
.fw-bold { font-weight: 700 !important; }

.small { font-size: 0.85rem; }
.lead { font-size: 1.2rem; color: var(--text-muted); }
.text-uppercase { text-transform: uppercase !important; }
.text-nowrap { white-space: nowrap !important; }
.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.rounded { border-radius: var(--radius-sm) !important; }
.rounded-lg { border-radius: var(--radius) !important; }
.rounded-full { border-radius: 999px !important; }
.border { border: 1px solid var(--border) !important; }
.border-0 { border: 0 !important; }
.shadow { box-shadow: 0 1px 3px var(--shadow-color) !important; }
.shadow-lg { box-shadow: 0 8px 24px var(--shadow-color) !important; }
.shadow-none { box-shadow: none !important; }

.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }
.hidden { display: none !important; }

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.bg-accent  { background: var(--accent-strong) !important; }
.bg-success { background: var(--success-strong) !important; }
.bg-error   { background: var(--error-strong) !important; }
.bg-warning { background: var(--warning-strong) !important; }
.bg-surface { background: var(--surface) !important; }
.bg-surface-2 { background: var(--surface-2) !important; }

/* ---------- responsive (≥768px) ---------- */

.col-md-1, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6,
.col-md-7, .col-md-8, .col-md-9, .col-md-10, .col-md-11, .col-md-12 {
  flex: 0 0 100%;
}

@media (min-width: 768px) {
  .col-md-1  { flex: 0 0 calc(100% * 1 / 12 - 1rem * 11 / 12); }
  .col-md-2  { flex: 0 0 calc(100% * 2 / 12 - 1rem * 10 / 12); }
  .col-md-3  { flex: 0 0 calc(100% * 3 / 12 - 1rem * 9 / 12); }
  .col-md-4  { flex: 0 0 calc(100% * 4 / 12 - 1rem * 8 / 12); }
  .col-md-5  { flex: 0 0 calc(100% * 5 / 12 - 1rem * 7 / 12); }
  .col-md-6  { flex: 0 0 calc(100% * 6 / 12 - 1rem * 6 / 12); }
  .col-md-7  { flex: 0 0 calc(100% * 7 / 12 - 1rem * 5 / 12); }
  .col-md-8  { flex: 0 0 calc(100% * 8 / 12 - 1rem * 4 / 12); }
  .col-md-9  { flex: 0 0 calc(100% * 9 / 12 - 1rem * 3 / 12); }
  .col-md-10 { flex: 0 0 calc(100% * 10 / 12 - 1rem * 2 / 12); }
  .col-md-11 { flex: 0 0 calc(100% * 11 / 12 - 1rem * 1 / 12); }
  .col-md-12 { flex: 0 0 100%; }

  .d-md-none { display: none !important; }
  .d-md-block { display: block !important; }
  .d-md-inline-block { display: inline-block !important; }
  .d-md-flex { display: flex !important; }
  .d-md-grid { display: grid !important; }
  .flex-md-row { flex-direction: row !important; }
  .flex-md-column { flex-direction: column !important; }
}

/* ---------- effects (opt-in) ---------- */

/* Gradient fill — accent → purple (or accent-strong where --purple is
   undefined, e.g. custom family themes). */
.bg-gradient {
  background: var(--gradient) !important;
  color: #fff;
}

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Slowly panning accent gradient. */
.anim-gradient {
  background: linear-gradient(120deg, var(--accent), var(--purple, var(--accent-strong)), var(--accent)) !important;
  background-size: 220% 220%;
  animation: nx-gradient-pan 9s ease-in-out infinite;
  color: #fff;
}

@keyframes nx-gradient-pan {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* Accent-colored glow halo. */
.glow {
  box-shadow: 0 0 22px var(--glow), 0 1px 3px var(--shadow-color) !important;
}

/* Frosted glass — pairs naturally with .card / .navbar / .alert. */
.glass {
  background: var(--glass-bg) !important;
  border-color: var(--glass-border) !important;
  -webkit-backdrop-filter: blur(12px) saturate(1.5);
  backdrop-filter: blur(12px) saturate(1.5);
}

/* Hover lift — cards, buttons, tiles. */
.lift {
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.lift:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px var(--shadow-color) !important;
}

/* Entrance animations. */
.fade-in  { animation: nx-fade-in 0.3s ease-out both; }
.slide-up { animation: nx-slide-up 0.35s ease-out both; }

@keyframes nx-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes nx-slide-up {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Hero section — soft radial accent wash over the page background. */
.hero {
  padding: 4rem 1rem;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, var(--accent-bg), transparent),
    var(--bg);
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .toast, .fade-in, .slide-up, .anim-gradient, .skeleton { animation: none; }
  .spinner, .btn.is-loading::before { animation-duration: 2s; }
  .btn, .progress-bar, .card, .lift,
  .form-switch input[type='checkbox'],
  .form-switch input[type='checkbox']::before { transition: none; }
  .btn:hover, .lift:hover { transform: none; }
}
