/* ============================================
   BAUVIA — PAGE STYLES
   ============================================ */

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.06);
}

.header-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}

.logo-mark {
  flex-shrink: 0;
  display: block;
  width: 32px;
  height: 32px;
}

.logo-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.nav-link:hover {
  color: var(--color-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Hide nav on very small screens */
@media (max-width: 640px) {
  .header-nav {
    display: none;
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
  text-decoration: none;
  border: none;
  white-space: nowrap;
}
.btn:active {
  transform: translateY(0) !important;
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-text-muted);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* --- Overline (label) --- */
.overline {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

/* --- Sections --- */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
}

.section-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}

.section-inner-narrow {
  max-width: var(--content-narrow);
  margin-inline: auto;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-top: var(--space-3);
}

.section-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  max-width: 48ch;
  margin-inline: auto;
}

/* --- Hero --- */
.hero {
  padding: clamp(var(--space-16), 10vw, var(--space-32)) var(--space-4);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle architectural grid pattern in hero */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      oklch(from var(--color-text) l c h / 0.02) 0px,
      oklch(from var(--color-text) l c h / 0.02) 1px,
      transparent 1px,
      transparent 80px
    ),
    repeating-linear-gradient(
      90deg,
      oklch(from var(--color-text) l c h / 0.02) 0px,
      oklch(from var(--color-text) l c h / 0.02) 1px,
      transparent 1px,
      transparent 80px
    );
  pointer-events: none;
}

.hero-inner {
  max-width: var(--content-default);
  margin-inline: auto;
  position: relative;
}

.hero-badge {
  margin-bottom: var(--space-6);
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--color-text);
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-accent {
  color: var(--color-primary);
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero-form {
  max-width: 480px;
  margin-inline: auto;
}

.form-row {
  display: flex;
  gap: var(--space-2);
}

.form-input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--text-base);
  min-width: 0;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.form-input::placeholder {
  color: var(--color-text-faint);
}
.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px oklch(from var(--color-accent) l c h / 0.12);
  outline: none;
}

.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  text-align: center;
}

/* --- Pain Points --- */
.section-pain {
  background: var(--color-surface-offset);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr));
  gap: var(--space-6);
}

.pain-card {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.pain-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-highlight);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.pain-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.pain-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Features --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: var(--space-6);
}

.feature-card {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  background: var(--color-surface);
  transition: box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: oklch(from var(--color-text) l c h / 0.12);
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-highlight);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.feature-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Steps --- */
.section-steps {
  background: var(--color-surface-offset);
}

.steps-grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.step-card {
  text-align: center;
  max-width: 280px;
  flex: 1;
  min-width: 200px;
}

.step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin: 0 auto var(--space-4);
}

.step-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.step-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 100%;
}

.step-connector {
  display: flex;
  align-items: center;
  padding-top: var(--space-6);
  color: var(--color-text-faint);
}

/* Hide connectors on small screens */
@media (max-width: 768px) {
  .step-connector {
    display: none;
  }
  .steps-grid {
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
  }
}

/* --- Pricing --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: var(--space-6);
  max-width: 720px;
  margin-inline: auto;
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card-featured {
  border-color: var(--color-accent);
  border-width: 2px;
  box-shadow: var(--shadow-lg);
}

.pricing-badge {
  position: absolute;
  top: calc(-1 * var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.price-amount {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
}

.price-period {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.pricing-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.pricing-features li svg {
  flex-shrink: 0;
}

.pricing-note {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 600;
  margin-top: var(--space-8);
}

/* --- About --- */
.about-content {
  text-align: center;
}

.about-quote {
  margin-top: var(--space-6);
  padding: 0;
  border: none;
}

.about-quote p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.6;
  max-width: 56ch;
  margin-inline: auto;
}

.about-author {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* --- CTA --- */
.section-cta {
  background: var(--color-surface-offset);
  text-align: center;
}

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

.cta-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  margin-bottom: var(--space-8);
  max-width: 48ch;
  margin-inline: auto;
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-8) var(--space-4);
}

.footer-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-link {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer-link:hover {
  color: var(--color-text);
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  opacity: 0;
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1),
              opacity 400ms cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* --- Scroll Animations --- */
/* Using IntersectionObserver JS approach for widest compatibility.
   The JS adds .fade-in-hidden on load, then removes it when in view.
   Content stays visible without JS (progressive enhancement). */
.fade-in {
  opacity: 1;
}

.fade-in-hidden {
  opacity: 0;
}

.fade-in-revealed {
  opacity: 1;
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Stagger delays for grid children */
.fade-in-revealed[data-delay="1"] { transition-delay: 60ms; }
.fade-in-revealed[data-delay="2"] { transition-delay: 120ms; }
.fade-in-revealed[data-delay="3"] { transition-delay: 180ms; }
.fade-in-revealed[data-delay="4"] { transition-delay: 240ms; }
.fade-in-revealed[data-delay="5"] { transition-delay: 300ms; }

/* --- Mobile Responsive --- */
@media (max-width: 640px) {
  .hero-headline {
    font-size: var(--text-2xl);
  }

  .hero-sub {
    font-size: var(--text-base);
  }

  .form-row {
    flex-direction: column;
  }

  .form-row .btn {
    width: 100%;
  }

  .section-title {
    font-size: var(--text-xl);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-12) var(--space-4);
  }

  .section {
    padding: var(--space-10) var(--space-4);
  }
}