/* ============================================================
   Structiva.io — styles.css
   Bootstrap 5 --bs-* variable overrides + custom components.
   To apply a different color theme, replace the :root block
   below with any Bootstrap-compatible theme's variables.
   ============================================================ */

/* ----------------------------------------------------------
   1. Bootstrap variable overrides
   ---------------------------------------------------------- */
:root {
  --bs-primary:           #1d4ed8;
  --bs-primary-rgb:       29, 78, 216;
  --bs-secondary:         #475569;
  --bs-secondary-rgb:     71, 85, 105;
  --bs-success:           #16a34a;
  --bs-info:              #0284c7;
  --bs-warning:           #d97706;
  --bs-danger:            #dc2626;
  --bs-light:             #f8fafc;
  --bs-dark:              #0f172a;
  --bs-body-bg:           #ffffff;
  --bs-body-color:        #1e293b;
  --bs-body-font-family:  'Inter', system-ui, -apple-system, sans-serif;
  --bs-body-font-size:    1rem;
  --bs-body-line-height:  1.7;
  --bs-border-color:      #e2e8f0;
  --bs-border-radius:     0.5rem;
  --bs-border-radius-lg:  0.75rem;
  --bs-border-radius-xl:  1rem;
  --bs-link-color:        #1d4ed8;
  --bs-link-hover-color:  #1e40af;

  /* Custom tokens that reference bs tokens */
  --stv-surface:          #f1f5f9;
  --stv-surface-2:        #e2e8f0;
  --stv-muted:            #64748b;
  --stv-banner-bg:        #0f172a;
  --stv-banner-color:     #e2e8f0;
  --stv-hero-bg:          #f8fafc;
  --stv-card-shadow:      0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.04);
  --stv-card-shadow-hover:0 4px 12px rgba(0,0,0,.12), 0 16px 40px rgba(0,0,0,.08);
  --stv-transition:       0.2s ease;
  --stv-max-width:        1100px;
}

/* ----------------------------------------------------------
   2. Base resets & typography
   ---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--bs-body-font-family);
  color: var(--bs-body-color);
  background: var(--bs-body-bg);
  line-height: var(--bs-body-line-height);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--bs-link-color);
  text-decoration: none;
  transition: color var(--stv-transition);
}
a:hover { color: var(--bs-link-hover-color); text-decoration: underline; }

h1,h2,h3,h4,h5,h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--bs-dark);
}

p { margin-top: 0; margin-bottom: 1rem; }

ul, ol { padding-left: 1.5rem; }

/* ----------------------------------------------------------
   3. Layout helpers
   ---------------------------------------------------------- */
.stv-container {
  width: 100%;
  max-width: var(--stv-max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.stv-section {
  padding-block: 5rem;
}

.stv-section--sm {
  padding-block: 3rem;
}

.stv-section--alt {
  background: var(--stv-surface);
}

/* ----------------------------------------------------------
   4. Coming-soon announcement banner
   ---------------------------------------------------------- */
.stv-banner {
  background: var(--stv-banner-bg);
  color: var(--stv-banner-color);
  text-align: center;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  letter-spacing: 0.01em;
}

.stv-banner a {
  color: #93c5fd;
  font-weight: 600;
  margin-left: 0.4rem;
}
.stv-banner a:hover { color: #bfdbfe; }

/* ----------------------------------------------------------
   5. Navigation
   ---------------------------------------------------------- */
.stv-nav {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bs-border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.stv-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
}

.stv-nav__logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--bs-dark);
  letter-spacing: -0.03em;
}
.stv-nav__logo span { color: var(--bs-primary); }
.stv-nav__logo:hover { text-decoration: none; color: var(--bs-dark); }

.stv-nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.stv-nav__links a {
  color: var(--bs-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--stv-transition);
}
.stv-nav__links a:hover,
.stv-nav__links a[aria-current="page"] {
  color: var(--bs-dark);
  text-decoration: none;
}

.stv-nav__cta {
  background: var(--bs-primary);
  color: #fff !important;
  padding: 0.45rem 1.1rem;
  border-radius: var(--bs-border-radius);
  font-weight: 600;
  font-size: 0.875rem;
  transition: background var(--stv-transition), transform var(--stv-transition);
}
.stv-nav__cta:hover {
  background: var(--bs-link-hover-color);
  transform: translateY(-1px);
}

/* Mobile nav toggle */
.stv-nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--bs-body-color);
}

@media (max-width: 768px) {
  .stv-nav__toggle { display: block; }
  .stv-nav__links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--bs-border-color);
    padding: 1rem 1.5rem;
  }
  .stv-nav__links.is-open { display: flex; }
  .stv-nav__links li { width: 100%; }
  .stv-nav__links a { display: block; padding: 0.6rem 0; font-size: 1rem; }
  .stv-nav { position: relative; }
}

/* ----------------------------------------------------------
   6. Hero section
   ---------------------------------------------------------- */
.stv-hero {
  background: var(--stv-hero-bg);
  padding-block: 6rem 5rem;
  text-align: center;
  overflow: hidden;
}

.stv-hero__eyebrow {
  display: inline-block;
  background: rgba(29,78,216,.08);
  color: var(--bs-primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 2rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(29,78,216,.15);
}

.stv-hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  max-width: 820px;
  margin-inline: auto;
  margin-bottom: 1.25rem;
  color: var(--bs-dark);
}

.stv-hero__sub {
  font-size: 1.15rem;
  color: var(--stv-muted);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 2.25rem;
  line-height: 1.75;
}

.stv-hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.stv-hero__trust {
  margin-top: 2.5rem;
  font-size: 0.85rem;
  color: var(--stv-muted);
}

.stv-hero__trust strong { color: var(--bs-dark); }

/* Fade-in animation */
@media (prefers-reduced-motion: no-preference) {
  .stv-hero__eyebrow,
  .stv-hero__title,
  .stv-hero__sub,
  .stv-hero__actions,
  .stv-hero__trust {
    opacity: 0;
    animation: stv-fadeUp 0.6s ease forwards;
  }
  .stv-hero__title  { animation-delay: 0.1s; }
  .stv-hero__sub    { animation-delay: 0.2s; }
  .stv-hero__actions{ animation-delay: 0.3s; }
  .stv-hero__trust  { animation-delay: 0.4s; }

  @keyframes stv-fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0);    }
  }
}

/* ----------------------------------------------------------
   7. Buttons
   ---------------------------------------------------------- */
.stv-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--bs-border-radius);
  padding: 0.7rem 1.5rem;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--stv-transition),
              color var(--stv-transition),
              border-color var(--stv-transition),
              transform var(--stv-transition),
              box-shadow var(--stv-transition);
  white-space: nowrap;
}

.stv-btn--primary {
  background: var(--bs-primary);
  color: #fff;
  border-color: var(--bs-primary);
}
.stv-btn--primary:hover {
  background: var(--bs-link-hover-color);
  border-color: var(--bs-link-hover-color);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(29,78,216,.3);
  text-decoration: none;
}

.stv-btn--outline {
  background: transparent;
  color: var(--bs-primary);
  border-color: var(--bs-primary);
}
.stv-btn--outline:hover {
  background: var(--bs-primary);
  color: #fff;
  transform: translateY(-2px);
  text-decoration: none;
}

.stv-btn--lg {
  font-size: 1rem;
  padding: 0.85rem 2rem;
}

.stv-btn--sm {
  font-size: 0.8rem;
  padding: 0.45rem 1rem;
}

/* ----------------------------------------------------------
   8. Section headings
   ---------------------------------------------------------- */
.stv-section-heading {
  text-align: center;
  margin-bottom: 3rem;
}

.stv-section-heading__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bs-primary);
  margin-bottom: 0.75rem;
}

.stv-section-heading h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}

.stv-section-heading p {
  color: var(--stv-muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 0;
}

/* ----------------------------------------------------------
   9. Feature cards
   ---------------------------------------------------------- */
.stv-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.stv-card {
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-lg);
  padding: 1.75rem;
  box-shadow: var(--stv-card-shadow);
  transition: box-shadow var(--stv-transition), transform var(--stv-transition);
}

@media (prefers-reduced-motion: no-preference) {
  .stv-card:hover {
    box-shadow: var(--stv-card-shadow-hover);
    transform: translateY(-4px);
  }
}

.stv-card__icon {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(29,78,216,.08);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.stv-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stv-card p {
  font-size: 0.9rem;
  color: var(--stv-muted);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ----------------------------------------------------------
   10. Pain-point / Why section (3-col)
   ---------------------------------------------------------- */
.stv-why {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.stv-why__item h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.stv-why__item p {
  color: var(--stv-muted);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.stv-why__item::before {
  content: '';
  display: block;
  width: 2px;
  height: 2.5rem;
  background: var(--bs-primary);
  margin-bottom: 1rem;
  border-radius: 2px;
}

/* ----------------------------------------------------------
   11. Social proof / trust bar
   ---------------------------------------------------------- */
.stv-proof {
  text-align: center;
  padding: 2.5rem 1rem;
  background: var(--bs-primary);
  color: #fff;
}

.stv-proof__stat {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.stv-proof__label {
  font-size: 0.875rem;
  opacity: 0.8;
  margin-top: 0.2rem;
}

.stv-proof__cols {
  display: flex;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
}

/* ----------------------------------------------------------
   12. FAQ accordion (CSS-only using <details>)
   ---------------------------------------------------------- */
.stv-faq {
  max-width: 720px;
  margin-inline: auto;
}

.stv-faq details {
  border-bottom: 1px solid var(--bs-border-color);
}

.stv-faq details:first-child {
  border-top: 1px solid var(--bs-border-color);
}

.stv-faq summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--bs-dark);
  user-select: none;
}

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

.stv-faq summary::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--stv-muted);
  transition: transform var(--stv-transition);
  flex-shrink: 0;
  margin-left: 1rem;
}

.stv-faq details[open] summary::after {
  content: '−';
}

.stv-faq__answer {
  padding: 0 0 1.25rem;
  color: var(--stv-muted);
  font-size: 0.925rem;
  line-height: 1.7;
}

/* ----------------------------------------------------------
   13. CTA strip / mid-page banner
   ---------------------------------------------------------- */
.stv-cta-strip {
  background: var(--stv-surface);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-xl);
  padding: 3rem 2rem;
  text-align: center;
}

.stv-cta-strip h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 0.75rem;
}

.stv-cta-strip p {
  color: var(--stv-muted);
  margin-bottom: 1.75rem;
  font-size: 1rem;
}

.stv-cta-strip__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ----------------------------------------------------------
   14. Blog cards
   ---------------------------------------------------------- */
.stv-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.75rem;
}

.stv-blog-card {
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--stv-card-shadow);
  transition: box-shadow var(--stv-transition), transform var(--stv-transition);
}

@media (prefers-reduced-motion: no-preference) {
  .stv-blog-card:hover {
    box-shadow: var(--stv-card-shadow-hover);
    transform: translateY(-3px);
  }
}

.stv-blog-card__meta {
  font-size: 0.775rem;
  color: var(--stv-muted);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.stv-blog-card h2, .stv-blog-card h3 {
  font-size: 1.05rem;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.stv-blog-card p {
  color: var(--stv-muted);
  font-size: 0.875rem;
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}

.stv-blog-card__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bs-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}
.stv-blog-card__link:hover { text-decoration: underline; }

/* ----------------------------------------------------------
   15. Features page — detailed feature sections
   ---------------------------------------------------------- */
.stv-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  padding-block: 3.5rem;
  border-bottom: 1px solid var(--bs-border-color);
}

.stv-feature-row:last-child { border-bottom: none; }

@media (max-width: 768px) {
  .stv-feature-row { grid-template-columns: 1fr; gap: 1.5rem; }
}

.stv-feature-row__badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bs-success);
  background: rgba(22,163,74,.08);
  border: 1px solid rgba(22,163,74,.2);
  padding: 0.2rem 0.6rem;
  border-radius: 2rem;
  margin-bottom: 0.75rem;
}

.stv-feature-row h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.stv-feature-row__problem {
  background: rgba(220,38,38,.04);
  border-left: 3px solid #fca5a5;
  padding: 0.75rem 1rem;
  border-radius: 0 0.375rem 0.375rem 0;
  font-size: 0.875rem;
  color: #7f1d1d;
  margin-bottom: 1rem;
  font-style: italic;
}

.stv-feature-row ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.stv-feature-row ul li {
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.9rem;
  color: var(--bs-body-color);
}

.stv-feature-row ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--bs-success);
  font-weight: 700;
}

.stv-feature-row__visual {
  background: var(--stv-surface);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-lg);
  padding: 2rem;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.stv-feature-row__visual-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
}

.stv-feature-row__visual p {
  font-size: 0.8rem;
  color: var(--stv-muted);
  margin-bottom: 0;
}

/* ----------------------------------------------------------
   16. Contact / Waitlist form
   ---------------------------------------------------------- */
.stv-form-wrap {
  max-width: 640px;
  margin-inline: auto;
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-xl);
  padding: 2.5rem;
  box-shadow: var(--stv-card-shadow);
}

.stv-form-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--bs-dark);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--bs-border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stv-form-section-title .stv-form-step {
  width: 1.5rem;
  height: 1.5rem;
  background: var(--bs-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stv-field {
  margin-bottom: 1.25rem;
}

.stv-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--bs-dark);
}

.stv-field input[type="text"],
.stv-field input[type="email"],
.stv-field textarea {
  width: 100%;
  font-family: inherit;
  font-size: 0.925rem;
  color: var(--bs-body-color);
  background: var(--bs-body-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
  padding: 0.65rem 0.875rem;
  transition: border-color var(--stv-transition), box-shadow var(--stv-transition);
  outline: none;
}

.stv-field input:focus,
.stv-field textarea:focus {
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 3px rgba(29,78,216,.12);
}

.stv-field textarea { resize: vertical; min-height: 110px; }

.stv-checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.stv-checkbox-group label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--bs-body-color);
  cursor: pointer;
}

.stv-checkbox-group input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--bs-primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
  cursor: pointer;
}

.stv-form-divider {
  border: none;
  border-top: 1px solid var(--bs-border-color);
  margin: 2rem 0 1.75rem;
}

.stv-form-note {
  font-size: 0.775rem;
  color: var(--stv-muted);
  margin-top: 1rem;
  text-align: center;
}

.stv-scarcity-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--bs-danger);
  background: rgba(220,38,38,.06);
  border: 1px solid rgba(220,38,38,.15);
  border-radius: 2rem;
  padding: 0.4rem 1rem;
  margin-bottom: 2rem;
  text-align: center;
}

/* ----------------------------------------------------------
   17. Article / Blog post layout
   ---------------------------------------------------------- */
.stv-article {
  max-width: 760px;
  margin-inline: auto;
}

.stv-article__header {
  margin-bottom: 2.5rem;
}

.stv-article__meta {
  font-size: 0.8rem;
  color: var(--stv-muted);
  margin-bottom: 1rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.stv-article h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}

.stv-article__intro {
  font-size: 1.1rem;
  color: var(--stv-muted);
  line-height: 1.8;
  margin-bottom: 0;
}

.stv-article h2 {
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.stv-article h3 {
  font-size: 1.1rem;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
}

.stv-article p, .stv-article li {
  font-size: 1rem;
  line-height: 1.8;
  color: #334155;
}

.stv-article ul, .stv-article ol {
  margin-bottom: 1rem;
}

.stv-article blockquote {
  border-left: 3px solid var(--bs-primary);
  margin: 2rem 0;
  padding: 1rem 1.5rem;
  background: var(--stv-surface);
  border-radius: 0 var(--bs-border-radius) var(--bs-border-radius) 0;
  font-style: italic;
  color: var(--stv-muted);
}

.stv-related-posts {
  background: var(--stv-surface);
  border-radius: var(--bs-border-radius-lg);
  padding: 1.5rem;
  margin-block: 2.5rem;
}

.stv-related-posts h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--stv-muted);
  margin-bottom: 0.75rem;
}

.stv-related-posts ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.stv-related-posts ul li a {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ----------------------------------------------------------
   18. About page
   ---------------------------------------------------------- */
.stv-about-hero {
  padding-block: 5rem;
  text-align: center;
}

.stv-about-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-bottom: 1rem;
}

.stv-about-hero p {
  font-size: 1.1rem;
  color: var(--stv-muted);
  max-width: 600px;
  margin-inline: auto;
}

.stv-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.stv-value-card {
  padding: 1.5rem;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-lg);
  background: #fff;
}

.stv-value-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.stv-value-card p {
  font-size: 0.875rem;
  color: var(--stv-muted);
  margin-bottom: 0;
}

/* ----------------------------------------------------------
   19. Footer
   ---------------------------------------------------------- */
.stv-footer {
  background: var(--bs-dark);
  color: #94a3b8;
  padding-block: 3.5rem 2rem;
}

.stv-footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
  .stv-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

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

.stv-footer__brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  margin-top: 0.75rem;
  max-width: 260px;
}

.stv-footer__logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}
.stv-footer__logo span { color: #60a5fa; }

.stv-footer__col h4 {
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #e2e8f0;
  margin-bottom: 1rem;
}

.stv-footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.stv-footer__col ul li a {
  font-size: 0.875rem;
  color: #94a3b8;
  transition: color var(--stv-transition);
}
.stv-footer__col ul li a:hover {
  color: #e2e8f0;
  text-decoration: none;
}

.stv-footer__bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.stv-footer__bottom a {
  color: #94a3b8;
}
.stv-footer__bottom a:hover { color: #e2e8f0; }

/* ----------------------------------------------------------
   20. 404 page
   ---------------------------------------------------------- */
.stv-404 {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.5rem;
}

.stv-404__code {
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 900;
  color: var(--stv-surface-2);
  line-height: 1;
  letter-spacing: -0.05em;
  margin-bottom: 0;
}

.stv-404 h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.75rem;
}

.stv-404 p {
  color: var(--stv-muted);
  max-width: 480px;
  margin-bottom: 2rem;
}

/* ----------------------------------------------------------
   21. Breadcrumb navigation
   ---------------------------------------------------------- */
.stv-breadcrumb {
  background: var(--stv-surface);
  border-bottom: 1px solid var(--stv-border);
  padding-block: 0.6rem;
  font-size: 0.8rem;
}
.stv-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--stv-muted);
}
.stv-breadcrumb li + li::before {
  content: "›";
  margin-right: 0.5rem;
  opacity: 0.5;
}
.stv-breadcrumb a {
  color: var(--stv-muted);
  text-decoration: none;
}
.stv-breadcrumb a:hover { text-decoration: underline; }
.stv-breadcrumb [aria-current="page"] { color: var(--bs-body-color); }

/* ----------------------------------------------------------
   22. Responsive utilities
   ---------------------------------------------------------- */
@media (max-width: 640px) {
  .stv-section { padding-block: 3.5rem; }
  .stv-hero    { padding-block: 4rem 3rem; }
  .stv-form-wrap { padding: 1.75rem 1.25rem; }
  .stv-proof__cols { gap: 2rem; }
}