/**
 * SlideFlow Pages — Estilos específicos por página
 */

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: all var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) 0;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: var(--spacing-8);
  list-style: none;
  margin: 0;
}

.nav-links a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-text);
}

/* Mobile nav (placeholder) */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}

/* ============================================
   HERO
   ============================================ */

.hero {
  padding-top: calc(var(--spacing-24) + 60px); /* Header height */
  padding-bottom: var(--spacing-32);
  text-align: center;
}

.hero-headline {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-6);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subheadline {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-10);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-16);
}

.hero-preview {
  margin-top: var(--spacing-16);
}

.preview-image {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  border-radius: var(--border-radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  background: white;
}

/* ============================================
   FEATURE SECTION
   ============================================ */

.feature-section {
  background: white;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: var(--max-width-narrow);
  margin: 0 auto var(--spacing-16);
}

.section-title {
  margin-bottom: var(--spacing-4);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: var(--max-width-prose);
  margin-left: auto;
  margin-right: auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-10);
}

.feature-card {
  text-align: left;
}

.feature-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-4);
  display: block;
}

.feature-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-3);
}

.feature-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   MODOS DE USO
   ============================================ */

.modes-section {
  background: var(--color-bg-alt);
}

.mode-card {
  background: white;
  padding: var(--spacing-10);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.mode-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.mode-badge {
  display: inline-block;
  margin-bottom: var(--spacing-4);
}

.mode-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
}

.mode-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-6);
}

.mode-features {
  list-style: none;
  margin: 0;
}

.mode-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-3);
  color: var(--color-text-secondary);
}

.mode-features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

/* ============================================
   USE CASES
   ============================================ */

.use-case-card {
  text-align: center;
  padding: var(--spacing-10);
}

.use-case-icon {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-4);
}

.use-case-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
}

.use-case-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-6);
}

.use-case-metric {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
}

/* ============================================
   PRICING
   ============================================ */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-8);
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-10);
  text-align: center;
  transition: all var(--transition-base);
}

.pricing-card.featured {
  border-color: var(--color-accent);
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.pricing-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.pricing-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
}

.pricing-price {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.pricing-period {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-8);
}

.pricing-features {
  list-style: none;
  margin: 0 0 var(--spacing-8) 0;
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
}

/* ============================================
   FAQ
   ============================================ */

.faq-section {
  background: white;
}

.faq-container {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

/* Section CTA (grid lógico) */
.section-cta-wrap {
  text-align: center;
  margin-top: var(--spacing-12);
}
.section-cta-sub {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-3);
}
.section-cta-sub a {
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
  background: var(--color-accent);
  color: white;
  text-align: center;
  padding: var(--spacing-24) 0;
}

.cta-section-title,
.cta-section h2 {
  color: #fff;
  margin-bottom: var(--spacing-6);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
}

.cta-section-desc,
.cta-section p {
  color: rgba(255, 255, 255, 0.95);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-10);
  max-width: var(--max-width-prose);
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-primary {
  background: white;
  color: var(--color-accent);
  border-color: white;
}

.cta-section .btn-primary:hover {
  background: var(--color-bg-alt);
  color: var(--color-accent);
}

.cta-section .btn-secondary {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
}

.cta-section .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-20) 0 var(--spacing-10);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-16);
}

.footer-column h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
  margin: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ============================================
   CONTACT PAGE
   ============================================ */

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

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

/* ============================================
   EDITOR SHELVES ACCORDION
   ============================================ */

.editor-shelves-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.shelf-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-5) 0;
}

.shelf-item:first-of-type {
  border-top: 1px solid var(--color-border);
}

.shelf-header {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-fast);
  padding: var(--spacing-3) 0;
}

.shelf-header::-webkit-details-marker {
  display: none;
}

.shelf-header:hover {
  color: var(--color-accent);
}

.shelf-header::after {
  content: '+';
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.shelf-item[open] .shelf-header::after {
  transform: rotate(45deg);
}

.shelf-content {
  padding: var(--spacing-6) 0;
  animation: slideDown 0.3s ease-out;
}

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

.shelf-cta {
  margin-top: var(--spacing-6);
  text-align: right;
}

/* EDITOR STRUCTURE DIAGRAM */
.editor-structure-diagram {
  max-width: 900px;
  margin: 0 auto;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: white;
}

.structure-top {
  background: var(--color-accent);
  color: white;
  padding: var(--spacing-4);
  text-align: center;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.structure-body {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  min-height: 400px;
}

.structure-left,
.structure-right {
  padding: var(--spacing-6);
  border-right: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.structure-right {
  border-right: none;
  border-left: 1px solid var(--color-border);
}

.structure-left-title,
.structure-right-title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
  text-align: center;
  line-height: 1.3;
}

.structure-shelf,
.structure-inspector-item {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-2) var(--spacing-3);
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.structure-center {
  padding: var(--spacing-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: white;
}

.structure-center-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--spacing-6);
}

.structure-canvas {
  width: 100%;
  height: 200px;
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
}

@media (max-width: 768px) {
  .structure-body {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }
  
  .structure-left,
  .structure-right {
    border-right: none;
    border-left: none;
    border-bottom: 1px solid var(--color-border);
  }
  
  .structure-right {
    border-bottom: none;
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .hero-headline {
    font-size: var(--font-size-4xl);
  }

  .hero-subheadline {
    font-size: var(--font-size-lg);
  }

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

  .pricing-card.featured {
    transform: none;
  }

  section {
    padding: var(--spacing-16) 0;
  }
}