/* UI: nav, footer, buttons, cards, grids, page patterns */

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  text-decoration: none;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-primary {
  background: var(--color-action);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-action-hover);
}

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

.btn-secondary:hover {
  border-color: var(--text-tertiary);
  background: var(--bg-surface);
}

/* --- Site announcement (global top strip) --- */

.site-announcement {
  --site-announcement-height: 40px;
  position: sticky;
  top: 0;
  z-index: 110;
  background: linear-gradient(
    90deg,
    rgba(16, 185, 129, 0.18) 0%,
    rgba(59, 130, 246, 0.14) 100%
  );
  border-bottom: 1px solid var(--border-default);
}

.site-announcement.is-hidden {
  display: none;
}

.site-announcement__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: var(--site-announcement-height);
  padding-block: 8px;
}

.site-announcement__text {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--text-secondary);
  text-align: center;
}

.site-announcement__label {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-trust);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  vertical-align: middle;
}

.site-announcement__cta {
  margin-left: 6px;
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
}

.site-announcement__cta:hover {
  color: var(--color-action);
}

.site-announcement__dismiss {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  min-height: 24px;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.site-announcement__dismiss:hover {
  color: var(--text-primary);
  background: var(--bg-surface);
  border-color: var(--border-default);
}

body.has-announcement .navbar {
  top: var(--site-announcement-height);
}

body.announcement-dismissed .navbar {
  top: 0;
}

@media (max-width: 640px) {
  .site-announcement {
    --site-announcement-height: 72px;
  }

  .site-announcement__label {
    display: block;
    margin: 0 0 4px;
    width: fit-content;
    margin-inline: auto;
  }

  .site-announcement__cta {
    display: inline-block;
    margin-left: 0;
    margin-top: 2px;
  }
}

/* --- Navbar --- */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-default);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.navbar__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.05rem;
  white-space: nowrap;
}

.navbar__mark,
.site-footer__mark {
  display: block;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
}

.navbar__wordmark,
.site-footer__wordmark {
  line-height: 1;
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-inline-start: 0.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
}

.lang-switcher__sep {
  color: var(--text-tertiary);
  user-select: none;
}

.lang-switcher__option {
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-block: 0.15rem;
  transition: color 0.15s ease, border-color 0.15s ease;
}

a.lang-switcher__option:hover {
  color: var(--text-primary);
}

.lang-switcher__option.is-active,
.lang-switcher__option[aria-current="true"] {
  color: var(--text-primary);
  font-weight: 600;
  border-bottom-color: var(--color-action);
}

a.lang-switcher__option:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
  border-radius: 2px;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.navbar__links > a:not(.btn) {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding-block: 0.2rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.navbar__links > a:not(.btn):hover {
  color: var(--text-primary);
}

.navbar__links > a:not(.btn).is-active,
.navbar__links > a:not(.btn)[aria-current="page"] {
  color: var(--text-primary);
  border-bottom-color: var(--color-action);
  font-weight: 600;
}

.navbar__links > .btn.is-active,
.navbar__links > .btn[aria-current="page"] {
  box-shadow: 0 0 0 2px var(--bg-canvas), 0 0 0 4px rgba(29, 78, 216, 0.55);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border-default);
  border-radius: 8px;
  background: var(--bg-surface);
  cursor: pointer;
}

.navbar__toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  margin-inline: auto;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.navbar.is-open .navbar__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar.is-open .navbar__toggle-bar:nth-child(2) {
  opacity: 0;
}

.navbar.is-open .navbar__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .navbar__toggle {
    display: flex;
  }

  .navbar__links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px;
    background: var(--bg-canvas);
    border-bottom: 1px solid var(--border-default);
  }

  .navbar.is-open .navbar__links {
    display: flex;
  }

  .navbar__links a {
    padding: 12px 8px;
  }

  .navbar__links .btn {
    margin-top: 8px;
    width: 100%;
  }

  .lang-switcher {
    margin: 8px 8px 0;
    justify-content: flex-start;
  }
}

/* --- Footer --- */

.site-footer {
  background: var(--bg-canvas);
  border-top: 1px solid var(--border-default);
  padding: 48px 0 24px;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  margin-bottom: 32px;
}

.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.05rem;
}

.site-footer__tagline,
.site-footer__extension {
  margin: 8px 0 0;
  color: var(--text-tertiary);
  font-size: 0.85rem;
  line-height: 1.5;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.site-footer__heading {
  margin: 0 0 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
}

.site-footer__col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-footer__col a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.site-footer__col a:hover {
  color: var(--text-primary);
}

.site-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.site-footer__bottom p {
  margin: 0;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

@media (max-width: 1100px) {
  .site-footer__cols {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .site-footer__cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .site-footer__cols {
    grid-template-columns: 1fr;
  }
}

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

.grid {
  display: grid;
  gap: 16px;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.container-narrow {
  max-width: 900px;
}

.container-tight {
  max-width: 800px;
}

.text-center {
  text-align: center;
}

.section-title {
  font-size: 2rem;
  text-align: center;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.muted {
  color: var(--text-secondary);
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
  font-size: 1.1rem;
  line-height: 1.6;
}

/* Inline links in prose: contrast + not color-only (1.4.3 / 1.4.1 / link-in-text-block) */
p a:not(.btn),
li a:not(.btn),
.lead a:not(.btn),
.muted a:not(.btn),
.legal a:not(.btn),
.notice-banner a:not(.btn),
.card p a:not(.btn),
.doc-content a:not(.btn),
.faq-item__body a:not(.btn) {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

p a:not(.btn):hover,
li a:not(.btn):hover,
.lead a:not(.btn):hover,
.muted a:not(.btn):hover,
.legal a:not(.btn):hover,
.notice-banner a:not(.btn):hover,
.card p a:not(.btn):hover,
.doc-content a:not(.btn):hover,
.faq-item__body a:not(.btn):hover {
  color: #bfdbfe;
}

.section--surface {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-default);
  border-bottom: 1px solid var(--border-default);
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  padding: 24px;
  border-radius: 12px;
}

.card--highlight {
  border-color: var(--color-trust);
  background: rgba(16, 185, 129, 0.02);
}

.card--canvas {
  background: var(--bg-canvas);
}

/* --- Page hero --- */

.page-hero {
  padding: 80px 0 56px;
  text-align: center;
  position: relative;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(16, 185, 129, 0.06), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(59, 130, 246, 0.06), transparent 45%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.03em;
}

.page-hero .lead {
  max-width: 680px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.15rem;
  line-height: 1.6;
}

.page-hero .pill {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 14px;
  border: 1px solid var(--border-default);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

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

.breadcrumb a:hover {
  color: var(--color-action);
}

/* --- Feature / link cards --- */

.feature-card {
  display: block;
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.feature-card:hover {
  border-color: var(--color-action);
  transform: translateY(-2px);
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

.feature-card .tag {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-trust);
  letter-spacing: 0.04em;
}

/* --- Two-column content --- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.split h2 {
  font-size: 1.35rem;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.split p,
.split li {
  color: var(--text-secondary);
  line-height: 1.6;
}

.split ul {
  margin: 0;
  padding-left: 20px;
}

/* --- CTA band --- */

.cta-band {
  text-align: center;
  padding: 64px 0;
}

.cta-band .cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 24px;
}

/* --- Code blocks --- */

.code-block {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--text-secondary);
  overflow-x: auto;
}

.code-block .kw {
  color: var(--color-action);
}

.code-block .str {
  color: var(--color-trust);
}

.code-block .cm {
  color: var(--text-tertiary);
}

/* --- Forms --- */

.form {
  max-width: 560px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: 8px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-action);
}

.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

.form-group input[aria-invalid="true"],
.form-group select[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
  border-color: var(--color-danger);
}

.form-inline-error {
  margin: 0 0 16px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.1);
  color: #fca5a5;
  font-size: 0.9rem;
}

.form-inline-error[hidden] {
  display: none !important;
}

.form-status[hidden] {
  display: none !important;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-success {
  display: none;
  padding: 24px;
  text-align: center;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 12px;
  color: var(--color-trust);
}

.form.is-submitted .form-fields {
  display: none;
}

.form.is-submitted .form-success {
  display: block;
}

/* --- Pricing --- */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 14px;
}

.pricing-card--featured {
  border-color: var(--color-action);
  background: rgba(59, 130, 246, 0.03);
}

.pricing-card h3 {
  margin: 0 0 4px;
  font-size: 1.2rem;
}

.pricing-card .price {
  font-size: 2rem;
  font-weight: 700;
  margin: 16px 0 4px;
  letter-spacing: -0.02em;
}

.pricing-card .price-note {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

.pricing-card ul {
  flex: 1;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.pricing-card li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.pricing-card li::before {
  content: "✓ ";
  color: var(--color-trust);
}

.pricing-card .btn {
  width: 100%;
}

/* --- Legal prose --- */

.faq-list .faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 0 16px;
  background: var(--bg-surface);
}

.faq-list .faq-item[open] {
  border-color: var(--border-default);
}

.faq-list .faq-item:target {
  border-color: var(--color-action);
  box-shadow: 0 0 0 1px var(--color-action);
}

.faq-list .faq-item summary {
  cursor: pointer;
  font-weight: 600;
  padding: 14px 0;
  list-style: none;
}

.faq-list .faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-list .faq-item__body {
  padding-bottom: 16px;
  color: var(--text-secondary);
}

.legal h2 {
  font-size: 1.25rem;
  margin: 32px 0 12px;
}

.legal h2:first-child {
  margin-top: 0;
}

.legal p,
.legal li {
  color: var(--text-secondary);
  line-height: 1.7;
}

.legal ul {
  padding-left: 20px;
}

/* --- Select-to-speak (Hub71-style floating speaker) --- */

.select-to-speak {
  position: fixed;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  border: 1px solid var(--border-default);
  border-radius: 999px;
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease,
    opacity 0.15s ease, transform 0.15s ease;
}

.select-to-speak[hidden] {
  display: none !important;
}

.select-to-speak:hover,
.select-to-speak:focus-visible {
  background: var(--color-action);
  border-color: var(--color-action);
  color: #fff;
  outline: none;
}

.select-to-speak__icon {
  width: 18px;
  height: 18px;
  display: block;
}

.select-to-speak__icon--stop {
  display: none;
}

.select-to-speak.is-speaking .select-to-speak__icon--speaker {
  display: none;
}

.select-to-speak.is-speaking .select-to-speak__icon--stop {
  display: block;
}

@media (prefers-reduced-motion: reduce) {
  .select-to-speak {
    transition: none;
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .split,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .page-hero {
    padding: 56px 0 40px;
  }
}