/* ==========================================================================
   KnowAnchor — app.css
   Marketing site + auth pages + shared components (buttons, forms, badges,
   cards, header, footer, accordion, cookie consent, modal, toast).
   Built from assets/css/tokens.css custom properties. No CSS framework.
   ========================================================================== */

/* ---------------------------------------------------------------------- */
/* Reset & base                                                            */
/* ---------------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
main { display: block; }
ul, ol { margin: 0; padding: 0; }
p { margin: 0 0 var(--space-4); }
a { color: var(--color-primary); }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.01em;
}
h1 { font-size: var(--display-xl); line-height: 1.08; letter-spacing: -0.015em; font-weight: 800; }
h2 { font-size: var(--display-md); line-height: 1.2; font-weight: 700; }
h3 { font-size: var(--display-sm); line-height: 1.25; font-weight: 700; }
h4 { font-size: var(--text-xl); line-height: 1.4; font-weight: 600; }
code, pre { font-family: var(--font-mono); }
input, textarea, select, button { font-family: inherit; font-size: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}
hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-8) 0; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
}
.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.icon-sm { width: 16px; height: 16px; }
.icon-lg { width: 24px; height: 24px; }

/* ---------------------------------------------------------------------- */
/* Containers                                                              */
/* ---------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-marketing);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--space-16);
}
@media (min-width: 640px) { .section { padding-block: var(--space-20); } }
@media (min-width: 1024px) { .section { padding-block: var(--space-24); } }
.section-bg-alt { background: var(--color-bg-alt); }
.section-divider { border-top: 1px solid var(--color-border); }

.eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 22px;
  height: 2px;
  background: var(--color-accent);
  margin-right: var(--space-2);
  vertical-align: middle;
  position: relative;
  top: -1px;
}

.section-header { max-width: 640px; margin-bottom: var(--space-10); }
.section-header p { font-size: var(--text-lg); color: var(--color-text-muted); }
.section-header.centered { max-width: 560px; margin-inline: auto; text-align: center; }

.lead { font-size: var(--text-lg); color: var(--color-text-muted); }
.text-muted { color: var(--color-text-muted); }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0; padding: 0; margin: -1px;
}

/* ---------------------------------------------------------------------- */
/* Buttons                                                                  */
/* ---------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color var(--motion-fast) var(--ease-standard),
              border-color var(--motion-fast) var(--ease-standard),
              color var(--motion-fast) var(--ease-standard);
  white-space: nowrap;
}
.btn-compact { min-height: 40px; padding: 0 var(--space-4); font-size: var(--text-sm); }
.btn-block { display: flex; width: 100%; }

.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); color: #fff; }
.btn-primary:active { background: #073a44; }
.btn-primary:disabled, .btn-primary[aria-disabled="true"] {
  background: var(--color-border); color: var(--color-text-muted); cursor: not-allowed;
}

.btn-secondary { background: var(--color-surface); color: var(--color-primary); border-color: var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary-tint); border-color: var(--color-primary-hover); color: var(--color-primary-hover); }
.btn-secondary:disabled { border-color: var(--color-border); color: var(--color-text-muted); cursor: not-allowed; }

.btn-ghost { background: transparent; color: var(--color-text); border-color: var(--color-border); }
.btn-ghost:hover { background: var(--color-bg-alt); }
.btn-ghost:disabled { color: var(--color-text-muted); cursor: not-allowed; }

.btn-destructive { background: var(--color-error); color: #fff; }
.btn-destructive:hover { background: #96201a; }
.btn-destructive:disabled { background: var(--color-border); color: var(--color-text-muted); cursor: not-allowed; }

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: 44px;
  color: var(--color-primary);
  background: none;
  border: none;
  font-weight: 600;
  padding: 0;
  text-decoration: none;
}
.btn-link:hover { text-decoration: underline; color: var(--color-primary-hover); }

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}
.btn-icon:hover { background: var(--color-bg-alt); color: var(--color-text); }
.btn-icon.is-active { background: var(--color-primary-tint); color: var(--color-primary); }

.btn[data-loading="true"] {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.btn[data-loading="true"]::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.5);
  border-top-color: #fff;
  border-radius: 50%;
  animation: ka-spin 0.7s linear infinite;
}
.btn-secondary[data-loading="true"]::after,
.btn-ghost[data-loading="true"]::after {
  border-color: rgba(11,93,107,0.3);
  border-top-color: var(--color-primary);
}
@keyframes ka-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .btn[data-loading="true"]::after { animation: none; border-top-color: rgba(255,255,255,0.5); }
}

.loading-row { display: inline-flex; align-items: center; gap: var(--space-2); color: var(--color-text-muted); font-size: var(--text-sm); }
.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: ka-spin 0.7s linear infinite;
  flex-shrink: 0;
}
@media (prefers-reduced-motion: reduce) {
  .spinner { animation: none; border-top-color: var(--color-border); }
}

/* ---------------------------------------------------------------------- */
/* Badges                                                                   */
/* ---------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  line-height: 1.5;
  white-space: nowrap;
}
.badge-draft { background: var(--color-neutral-tint); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.badge-published { background: var(--color-success-tint); color: var(--color-success); text-transform: uppercase; letter-spacing: 0.04em; }
.badge-private { background: var(--color-neutral-tint); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.badge-public { background: var(--color-primary-tint); color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.04em; }
.badge-coming-soon, .badge-mock { background: var(--color-warning-tint); color: var(--color-warning-tint-text); }
.badge-plan { background: var(--color-primary-tint); color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.04em; }

/* ---------------------------------------------------------------------- */
/* Alerts / Flash                                                           */
/* ---------------------------------------------------------------------- */

.alert {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  font-size: var(--text-sm);
}
.alert .icon { flex-shrink: 0; margin-top: 2px; }
.alert-success { background: var(--color-success-tint); color: #143d29; }
.alert-success .icon { color: var(--color-success); }
.alert-error { background: var(--color-error-tint); color: #5c130e; }
.alert-error .icon { color: var(--color-error); }
.alert-warning { background: var(--color-warning-tint); color: var(--color-warning-tint-text); }
.alert-warning .icon { color: var(--color-warning); }
.alert-info { background: var(--color-primary-tint); color: var(--color-primary-hover); }
.alert-info .icon { color: var(--color-primary); }
.alert p:last-child { margin-bottom: 0; }
.alert ul { margin: var(--space-2) 0 0; padding-left: var(--space-5); }

/* ---------------------------------------------------------------------- */
/* Forms                                                                    */
/* ---------------------------------------------------------------------- */

.field { margin-bottom: var(--space-5); }
.field label, .field legend {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-heading);
}
.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field input[type="search"],
.field textarea,
.field select {
  width: 100%;
  min-height: 44px;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  font-size: var(--text-base);
  transition: border-color var(--motion-instant) var(--ease-standard);
}
.field textarea { min-height: 96px; resize: vertical; }
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235B6572' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-color: var(--color-primary);
}
.field .help { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-2); }
.field .field-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.field.has-error input, .field.has-error textarea, .field.has-error select {
  border: 2px solid var(--color-error);
}
.field input:disabled, .field textarea:disabled, .field select:disabled {
  background: var(--color-bg-alt); color: var(--color-text-muted); cursor: not-allowed;
}

.radio-group { display: flex; flex-direction: column; gap: var(--space-3); border: none; padding: 0; margin: 0 0 var(--space-5); }
.radio-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  min-height: 44px;
  cursor: pointer;
}
.radio-option:has(input:checked) { border-color: var(--color-primary); background: var(--color-primary-tint); }
.radio-option input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--color-primary); flex-shrink: 0; }
.radio-option .radio-label { font-weight: 600; display: block; }
.radio-option .radio-desc { font-size: var(--text-sm); color: var(--color-text-muted); display: block; margin-top: 2px; }

.slug-field { display: flex; align-items: stretch; }
.slug-field .slug-prefix {
  display: flex; align-items: center;
  padding: 0 var(--space-3);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  white-space: nowrap;
}
.slug-field input { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

.form-actions { display: flex; gap: var(--space-3); flex-wrap: wrap; align-items: center; margin-top: var(--space-6); }
.form-reassurance { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-4); }

fieldset { border: none; padding: 0; margin: 0; }

/* ---------------------------------------------------------------------- */
/* Header / Primary nav                                                    */
/* ---------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height-mobile);
}
@media (min-width: 1024px) { .site-header { height: var(--header-height-desktop); } }
.site-header.is-scrolled {
  border-bottom-color: transparent;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--motion-base) var(--ease-standard);
}
.site-header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-heading);
  text-decoration: none;
}
.site-logo .icon-anchor-line { color: var(--color-primary); }
.primary-nav { display: none; }
.primary-nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}
.primary-nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}
.primary-nav-links a:hover { color: var(--color-primary); }
.primary-nav-links a[aria-current="page"] { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.header-actions { display: none; align-items: center; gap: var(--space-5); }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: none;
  border: none;
  color: var(--color-heading);
}
@media (min-width: 1024px) {
  .primary-nav { display: flex; align-items: center; gap: var(--space-8); flex: 1; justify-content: flex-end; }
  .header-actions { display: flex; }
  .nav-toggle { display: none; }
}

/* Mobile drawer (marketing) */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-surface);
  transform: translateX(100%);
  transition: transform var(--motion-slow) var(--ease-in-soft);
  display: flex;
  flex-direction: column;
  visibility: hidden;
}
.nav-drawer.is-open {
  transform: translateX(0);
  transition-timing-function: var(--ease-out-soft);
  visibility: visible;
}
@media (prefers-reduced-motion: reduce) { .nav-drawer { transition: none; } }
.nav-drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-height-mobile);
  padding-inline: var(--gutter);
  border-bottom: 1px solid var(--color-border);
}
.nav-drawer-body { padding: var(--space-6) var(--gutter); overflow-y: auto; }
.nav-drawer-cta { margin-bottom: var(--space-4); }
.nav-drawer-list { list-style: none; }
.nav-drawer-list li { border-bottom: 1px solid var(--color-border); }
.nav-drawer-list a {
  display: flex; align-items: center;
  min-height: 56px;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--text-lg);
}
.nav-drawer-list a[aria-current="page"] { color: var(--color-primary); }
body.drawer-open { overflow: hidden; }
@media (min-width: 1024px) { .nav-drawer { display: none; } }

/* ---------------------------------------------------------------------- */
/* Footer                                                                   */
/* ---------------------------------------------------------------------- */

.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16);
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}
.footer-brand p { color: var(--color-text-muted); max-width: 40ch; }
.footer-cols { display: grid; grid-template-columns: 1fr; gap: var(--space-8); }
@media (min-width: 480px) { .footer-cols { grid-template-columns: repeat(2, 1fr); } }
.footer-col h2 {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a, .footer-col button.link-like {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-sm);
  background: none; border: none; padding: 0; text-align: left; cursor: pointer;
}
.footer-col a:hover, .footer-col button.link-like:hover { color: var(--color-primary); text-decoration: underline; }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.footer-bottom a { color: var(--color-text-muted); }
@media (min-width: 768px) {
  .footer-top { grid-template-columns: 1.2fr 2fr; }
  .footer-cols { grid-template-columns: repeat(4, 1fr); }
}

/* Condensed KB footer */
.kb-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-10);
  background: var(--color-bg-alt);
}
.kb-footer-inner { display: flex; flex-wrap: wrap; gap: var(--space-4) var(--space-6); align-items: center; justify-content: space-between; font-size: var(--text-sm); color: var(--color-text-muted); }
.kb-footer-links { display: flex; flex-wrap: wrap; gap: var(--space-4); list-style: none; }
.kb-footer-links a { color: var(--color-text-muted); text-decoration: none; }
.kb-footer-links a:hover { color: var(--color-primary); text-decoration: underline; }

/* ---------------------------------------------------------------------- */
/* Cards                                                                    */
/* ---------------------------------------------------------------------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}
.card-interactive {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--motion-base) var(--ease-standard), border-color var(--motion-base) var(--ease-standard);
}
.card-interactive:hover, .card-interactive:focus-visible {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.grid-cards { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 768px) { .grid-cards { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); } }
@media (min-width: 1024px) { .grid-cards { grid-template-columns: repeat(3, 1fr); gap: var(--space-8); } }
.grid-cards-2 { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 768px) { .grid-cards-2 { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); } }

.feature-card { padding: var(--space-6); }
@media (min-width: 1024px) { .feature-card { padding: var(--space-8); } }
.feature-card .icon-lg { color: var(--color-primary); margin-bottom: var(--space-4); }
.feature-card h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.feature-card p { color: var(--color-text-muted); margin-bottom: 0; }

.ai-feature-card { padding: var(--space-6); }
.ai-feature-card .icon-lg { color: var(--color-primary); margin-bottom: var(--space-4); }
.ai-feature-card h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.ai-feature-card p { margin-bottom: var(--space-2); }
.ai-feature-card .does-not { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: 0; }
.ai-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
@media (min-width: 768px) { .ai-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); } }
@media (min-width: 1024px) { .ai-grid { grid-template-columns: repeat(6, 1fr); gap: var(--space-6); } }
@media (min-width: 1024px) {
  .ai-grid .ai-feature-card:nth-child(1) { grid-column: span 2; }
  .ai-grid .ai-feature-card:nth-child(2) { grid-column: span 2; }
  .ai-grid .ai-feature-card:nth-child(3) { grid-column: span 2; }
  .ai-grid .ai-feature-card:nth-child(4) { grid-column: 2 / span 2; }
  .ai-grid .ai-feature-card:nth-child(5) { grid-column: 4 / span 2; }
}

.category-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  background: var(--color-surface);
  transition: box-shadow var(--motion-base) var(--ease-standard), border-color var(--motion-base) var(--ease-standard);
}
.category-card:hover, .category-card:focus-visible { box-shadow: var(--shadow-md); border-color: var(--color-primary); }
.category-card .icon-lg { color: var(--color-primary); }
.category-card h3 { font-size: var(--text-xl); margin-bottom: 0; }
.category-card .count { font-size: var(--text-sm); color: var(--color-text-muted); }

/* Process timeline */
.process-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  counter-reset: step;
}
@media (min-width: 1024px) {
  .process-timeline { grid-template-columns: repeat(4, 1fr); gap: var(--space-6); position: relative; }
  .process-timeline::before {
    content: '';
    position: absolute;
    top: 24px; left: calc(12.5% + 24px); right: calc(12.5% + 24px);
    height: 1px;
    background: var(--color-border);
  }
}
.process-step { position: relative; }
.process-step-number {
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--display-sm);
  background: var(--color-bg-alt);
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
}
.process-step h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.process-step p { color: var(--color-text-muted); margin-bottom: 0; }

/* Why-list */
.why-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-5); max-width: 720px; }
.why-list li { font-size: var(--text-lg); padding-left: var(--space-6); position: relative; }
.why-list li::before {
  content: '';
  position: absolute; left: 0; top: 0.5em;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
}
.why-list strong { color: var(--color-heading); }

/* Use-case split */
.use-case-split { display: grid; grid-template-columns: 1fr; gap: var(--space-8); align-items: start; }
@media (min-width: 1024px) { .use-case-split { grid-template-columns: 0.9fr 1.1fr; gap: var(--space-12); } }
.use-case-cols { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
@media (min-width: 640px) { .use-case-cols { grid-template-columns: 1fr 1fr; } }
.use-case-col {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  background: var(--color-surface);
}
.feature-group-row { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
@media (min-width: 1024px) { .feature-group-row { grid-template-columns: 1.1fr 0.9fr; align-items: center; } }
.feature-group-text h3 { margin-bottom: var(--space-2); }
.feature-group-text p { color: var(--color-text-muted); margin-bottom: 0; }

.use-case-col .badge { margin-bottom: var(--space-3); }
.use-case-col h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.use-case-col p { color: var(--color-text-muted); margin-bottom: 0; }

/* ---------------------------------------------------------------------- */
/* Hero (split)                                                             */
/* ---------------------------------------------------------------------- */

.hero-split {
  padding-block: var(--space-16);
  overflow: hidden;
}
@media (min-width: 640px) { .hero-split { padding-block: var(--space-20); } }
@media (min-width: 1024px) { .hero-split { padding-block: var(--space-32); } }
.hero-split-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
}
@media (min-width: 1024px) { .hero-split-inner { grid-template-columns: 55% 1fr; gap: var(--space-12); } }
.hero-copy h1 { margin-bottom: var(--space-5); }
.hero-copy .lead { margin-bottom: var(--space-6); }
.hero-cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-5); margin-bottom: var(--space-4); }
.hero-microcopy { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: 0; }

/* hero-editorial */
.hero-editorial { padding-block: var(--space-16); }
@media (min-width: 640px) { .hero-editorial { padding-block: var(--space-20); } }
@media (min-width: 1024px) { .hero-editorial { padding-block: var(--space-24); } }
.hero-editorial .container-narrow { text-align: left; }
.hero-editorial.centered .container-narrow { text-align: center; }
.hero-editorial h1 { margin-bottom: var(--space-5); }
.hero-editorial .lead { margin-bottom: var(--space-6); }

/* ---------------------------------------------------------------------- */
/* UI-frame mockups (coded, not raster images)                             */
/* ---------------------------------------------------------------------- */

.ui-frame {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.ui-frame-chrome {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}
.ui-frame-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--color-border); }
.ui-frame-body { display: flex; min-height: 260px; }
.ui-frame-nav {
  width: 34%;
  max-width: 140px;
  background: var(--color-bg-alt);
  border-right: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.ui-frame-nav-item {
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  width: 80%;
}
.ui-frame-nav-item.active { background: var(--color-primary); width: 90%; }
.ui-frame-main { flex: 1; padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-3); }
.ui-frame-bar { height: 12px; border-radius: var(--radius-full); background: var(--color-border); }
.ui-frame-bar.w-60 { width: 60%; }
.ui-frame-bar.w-40 { width: 40%; }
.ui-frame-bar.w-80 { width: 80%; }
.ui-frame-bar.accent { background: var(--color-primary); }
.ui-frame-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.ui-frame-row { display: flex; align-items: center; gap: var(--space-3); }
.ui-frame-pill { display: inline-flex; align-items: center; padding: 2px var(--space-2); border-radius: var(--radius-full); font-size: 10px; font-weight: 600; background: var(--color-success-tint); color: var(--color-success); }
.ui-frame-pill.draft { background: var(--color-neutral-tint); color: var(--color-text-muted); }
.ui-frame-badge-ai { display: inline-flex; align-items: center; gap: 4px; padding: 2px var(--space-2); border-radius: var(--radius-full); font-size: 10px; font-weight: 600; background: var(--color-warning-tint); color: var(--color-warning-tint-text); }
.ui-frame-fragment { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); background: var(--color-surface); }

/* ---------------------------------------------------------------------- */
/* Pricing                                                                  */
/* ---------------------------------------------------------------------- */

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: stretch;
}
@media (min-width: 1024px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); } }
.pricing-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  background: var(--color-surface);
}
.pricing-card.is-featured { border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.pricing-card h2, .pricing-card h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.pricing-card .plan-best-for { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-4); }
.pricing-card .plan-price { font-family: var(--font-heading); font-size: var(--display-sm); font-weight: 700; color: var(--color-heading); margin-bottom: var(--space-5); }
.pricing-card .plan-price span { font-size: var(--text-sm); font-weight: 400; color: var(--color-text-muted); }
.pricing-features { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); margin-bottom: var(--space-6); flex: 1; }
.pricing-features li { display: flex; align-items: flex-start; gap: var(--space-2); font-size: var(--text-base); }
.pricing-features .icon { color: var(--color-success); flex-shrink: 0; margin-top: 3px; }
.pricing-features .badge { margin-left: auto; flex-shrink: 0; }
.pricing-card .plan-microcopy { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-3); margin-bottom: 0; }

.comparison-wrap { overflow-x: auto; }
.comparison-table { width: 100%; border-collapse: collapse; min-width: 560px; }
.comparison-table th, .comparison-table td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border); text-align: left; font-size: var(--text-sm); }
.comparison-table th { font-family: var(--font-heading); font-weight: 700; color: var(--color-heading); }
.comparison-table td:not(:first-child), .comparison-table th:not(:first-child) { text-align: center; }

/* ---------------------------------------------------------------------- */
/* FAQ / Accordion                                                          */
/* ---------------------------------------------------------------------- */

.accordion { border-top: 1px solid var(--color-border); }
.accordion-item { border-bottom: 1px solid var(--color-border); }
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-5) 0;
  min-height: 48px;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-heading);
}
.accordion-trigger .icon {
  flex-shrink: 0;
  transition: transform var(--motion-fast) var(--ease-standard);
  color: var(--color-text-muted);
}
.accordion-trigger[aria-expanded="true"] .icon { transform: rotate(180deg); }
.accordion-panel-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--motion-slow) var(--ease-standard);
}
.accordion-trigger[aria-expanded="true"] + .accordion-panel-wrap { grid-template-rows: 1fr; }
.accordion-panel {
  overflow: hidden;
  min-height: 0;
}
.accordion-panel-inner { padding-bottom: var(--space-5); color: var(--color-text-muted); }
.accordion-panel-inner p:last-child { margin-bottom: 0; }
.accordion-panel-inner a { color: var(--color-primary); }
@media (prefers-reduced-motion: reduce) {
  .accordion-panel-wrap { transition: none; }
  .accordion-trigger .icon { transition: none; }
}

/* ---------------------------------------------------------------------- */
/* CTA banner                                                               */
/* ---------------------------------------------------------------------- */

.cta-banner { text-align: center; }
.cta-banner h2 { margin-bottom: var(--space-3); }
.cta-banner p { max-width: 560px; margin-inline: auto; color: var(--color-text-muted); margin-bottom: var(--space-6); }
.cta-banner .btn { margin-bottom: var(--space-3); }
.cta-banner .hero-microcopy { text-align: center; }

/* ---------------------------------------------------------------------- */
/* Breadcrumb                                                               */
/* ---------------------------------------------------------------------- */

.breadcrumb { margin-bottom: var(--space-6); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-2); font-size: var(--text-sm); color: var(--color-text-muted); }
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-primary); text-decoration: underline; }
.breadcrumb li:not(:last-child)::after { content: '/'; margin-left: var(--space-2); color: var(--color-border); }
.breadcrumb li[aria-current] { color: var(--color-text); }

/* ---------------------------------------------------------------------- */
/* Legal content                                                            */
/* ---------------------------------------------------------------------- */

.legal-layout { display: grid; grid-template-columns: 1fr; gap: var(--space-8); }
@media (min-width: 1024px) { .legal-layout { grid-template-columns: 220px 1fr; align-items: start; } }
.legal-toc { position: static; }
@media (min-width: 1024px) { .legal-toc { position: sticky; top: calc(var(--header-height-desktop) + var(--space-6)); } }
.legal-toc-title { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); margin-bottom: var(--space-3); font-weight: 600; }
.legal-toc ol { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); font-size: var(--text-sm); }
.legal-toc a { color: var(--color-text-muted); text-decoration: none; }
.legal-toc a:hover { color: var(--color-primary); }
.legal-disclaimer {
  background: var(--color-warning-tint);
  color: var(--color-warning-tint-text);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
  margin-bottom: var(--space-8);
}
.legal-body h2 { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid var(--color-border); scroll-margin-top: calc(var(--header-height-desktop) + var(--space-4)); }
.legal-body h2:first-of-type { margin-top: 0; padding-top: 0; border-top: none; }
.legal-body p, .legal-body li { color: var(--color-text); }
.legal-body table { width: 100%; border-collapse: collapse; margin: var(--space-5) 0; display: block; overflow-x: auto; }
.legal-body th, .legal-body td { border: 1px solid var(--color-border); padding: var(--space-3); text-align: left; font-size: var(--text-sm); vertical-align: top; }
.legal-body th { background: var(--color-bg-alt); font-family: var(--font-heading); }
.legal-updated { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-10); }
.legal-placeholder { color: var(--color-warning-tint-text); background: var(--color-warning-tint); padding: 0 4px; border-radius: 4px; font-style: normal; }

/* Mobile legal accordion */
.legal-mobile-toc { display: block; margin-bottom: var(--space-6); }
@media (min-width: 1024px) { .legal-mobile-toc { display: none; } }
@media (min-width: 1024px) { .legal-toc { display: block; } }

/* Legal body: accordion on mobile, full continuous scroll on desktop */
.legal-body .accordion { border-top: none; }
.legal-body .accordion-trigger {
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  border-top: 1px solid var(--color-border);
}
@media (min-width: 1024px) {
  .legal-body .accordion-trigger { display: none; }
  .legal-body .accordion-panel-wrap { grid-template-rows: 1fr !important; }
  .legal-body .accordion-panel[hidden] { display: block !important; }
  .legal-body .accordion-panel-inner { padding-bottom: 0; }
}

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

.auth-shell { min-height: 100vh; display: flex; flex-direction: column; background: var(--color-bg-alt); }
.auth-header { padding: var(--space-6) var(--gutter); }
.auth-header a { font-family: var(--font-heading); font-weight: 800; font-size: var(--text-xl); color: var(--color-heading); text-decoration: none; display: inline-flex; align-items: center; gap: var(--space-2); }
.auth-main { flex: 1; display: flex; align-items: flex-start; justify-content: center; padding: var(--space-8) var(--gutter) var(--space-16); }
.auth-card { width: 100%; max-width: 400px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-8); margin-top: var(--space-4); }
.auth-card h1 { font-size: var(--display-md); margin-bottom: var(--space-2); }
.auth-card .lead { font-size: var(--text-base); margin-bottom: var(--space-6); }
.auth-card .btn { width: 100%; }
.auth-below { text-align: center; margin-top: var(--space-5); font-size: var(--text-sm); color: var(--color-text-muted); }
.auth-legal { text-align: center; font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-4); }
.auth-footer { text-align: center; padding: var(--space-6); font-size: var(--text-xs); color: var(--color-text-muted); }
.auth-footer a { color: var(--color-text-muted); }
.admin-flag {
  display: inline-flex; align-items: center; gap: var(--space-2);
  background: var(--color-admin-bg); color: var(--color-admin-text);
  font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

/* ---------------------------------------------------------------------- */
/* Error pages                                                              */
/* ---------------------------------------------------------------------- */

.error-page { min-height: calc(100vh - var(--header-height-mobile) - 200px); display: flex; align-items: center; }
.error-content { text-align: center; max-width: 480px; margin-inline: auto; }
.error-illustration { margin-bottom: var(--space-8); margin-inline: auto; }
.error-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: center; margin-top: var(--space-6); }

/* ---------------------------------------------------------------------- */
/* Cookie consent                                                          */
/* ---------------------------------------------------------------------- */

.cookie-notice {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 300;
  background: var(--color-surface-elevated);
  border-top: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: var(--space-5) var(--gutter);
}
.cookie-notice[hidden] { display: none; }
.cookie-notice-inner {
  max-width: var(--container-marketing);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-6);
}
.cookie-notice-text { flex: 1 1 320px; }
.cookie-notice-text h2 { font-size: var(--text-base); margin-bottom: var(--space-1); }
.cookie-notice-text p { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: 0; }
.cookie-notice-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }

.cookie-panel-backdrop {
  position: fixed; inset: 0; z-index: 310;
  background: var(--color-backdrop);
  opacity: 0;
  transition: opacity var(--motion-base) var(--ease-standard);
}
.cookie-panel-backdrop[hidden] { display: none; }
.cookie-panel-backdrop.is-open { opacity: 1; }
.cookie-panel {
  position: fixed;
  z-index: 320;
  left: 50%; top: 50%;
  transform: translate(-50%, -46%);
  width: min(520px, calc(100vw - 2 * var(--space-4)));
  max-height: calc(100vh - var(--space-8));
  overflow-y: auto;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
  opacity: 0;
  transition: opacity var(--motion-base) var(--ease-out-soft), transform var(--motion-base) var(--ease-out-soft);
}
.cookie-panel[hidden] { display: none; }
.cookie-panel.is-open { opacity: 1; transform: translate(-50%, -50%); }
@media (prefers-reduced-motion: reduce) {
  .cookie-panel, .cookie-panel-backdrop { transition: none; }
}
.cookie-panel-header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-6); }
.cookie-panel-header h2 { margin-bottom: 0; }
.cookie-category { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); margin-bottom: var(--space-4); }
.cookie-category-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-2); }
.cookie-category-head strong { font-size: var(--text-base); }
.cookie-category p { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: 0; }

.toggle { position: relative; display: inline-flex; align-items: center; width: 44px; height: 24px; flex-shrink: 0; }
.toggle input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.toggle .track { position: absolute; inset: 0; background: var(--color-border); border-radius: var(--radius-full); transition: background-color var(--motion-fast) var(--ease-standard); }
.toggle .thumb { position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; background: #fff; border-radius: 50%; box-shadow: var(--shadow-sm); transition: transform var(--motion-fast) var(--ease-standard); }
.toggle input:checked + .track { background: var(--color-primary); }
.toggle input:checked ~ .thumb { transform: translateX(20px); }
.toggle input:disabled + .track { background: var(--color-primary); opacity: 0.5; }
.toggle input:focus-visible + .track { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.cookie-panel-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-6); }

/* ---------------------------------------------------------------------- */
/* Modal                                                                    */
/* ---------------------------------------------------------------------- */

.modal-backdrop {
  position: fixed; inset: 0; z-index: 400;
  background: var(--color-backdrop);
  opacity: 0;
  transition: opacity var(--motion-base) var(--ease-standard);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
}
.modal-backdrop[hidden] { display: none; }
.modal-backdrop.is-open { opacity: 1; }
.modal {
  width: 100%; max-width: 480px;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--motion-base) var(--ease-out-soft), transform var(--motion-base) var(--ease-out-soft);
}
.modal-backdrop.is-open .modal { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .modal, .modal-backdrop { transition: none; }
}
.modal h2 { margin-bottom: var(--space-3); }
.modal p { color: var(--color-text-muted); }
.modal .field { margin-top: var(--space-4); }
.modal-actions { display: flex; gap: var(--space-3); margin-top: var(--space-6); flex-wrap: wrap; }

/* ---------------------------------------------------------------------- */
/* Toast                                                                    */
/* ---------------------------------------------------------------------- */

.toast-region { position: fixed; bottom: var(--space-6); right: var(--space-6); z-index: 500; display: flex; flex-direction: column; gap: var(--space-3); max-width: 360px; }
@media (max-width: 640px) { .toast-region { left: var(--space-4); right: var(--space-4); bottom: var(--space-4); max-width: none; } }
.toast {
  background: var(--color-surface-elevated);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4) var(--space-5);
  display: flex; align-items: flex-start; gap: var(--space-3);
  font-size: var(--text-sm);
  border-left: 4px solid var(--color-primary);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--motion-base) var(--ease-out-soft), transform var(--motion-base) var(--ease-out-soft);
}
.toast.is-visible { opacity: 1; transform: translateY(0); }
.toast.toast-success { border-left-color: var(--color-success); }
.toast.toast-error { border-left-color: var(--color-error); }
@media (prefers-reduced-motion: reduce) { .toast { transition: none; } }

/* ---------------------------------------------------------------------- */
/* Scroll reveal (docs/motion.md §10, binding no-JS-safe pattern)          */
/* ---------------------------------------------------------------------- */

.reveal { opacity: 1; transform: none; }
.reveal.js-observe {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--motion-slower) var(--ease-out-soft),
              transform var(--motion-slower) var(--ease-out-soft);
}
.reveal.js-observe.is-visible { opacity: 1; transform: none; }

/* ---------------------------------------------------------------------- */
/* Tables (generic, used pre-app.css load contexts)                        */
/* ---------------------------------------------------------------------- */

table { border-collapse: collapse; width: 100%; }

/* ---------------------------------------------------------------------- */
/* Utility                                                                  */
/* ---------------------------------------------------------------------- */

.link-like {
  background: none; border: none; padding: 0; cursor: pointer;
  color: inherit; font: inherit; text-decoration: none;
}
.link-like:hover { color: var(--color-primary); text-decoration: underline; }

.stack { display: flex; flex-direction: column; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }