/* ==========================================================================
   Base & Reset
   ========================================================================== */
:root {
  --color-surface: #FFFFFF;
  --color-bg-muted: #F8FAFC;
  /* Slate 50 */
  --color-bg-alt: #F1F5F9;
  /* Slate 100 */

  --color-text-main: #334155;
  /* Slate 700 */
  --color-text-heading: #0F172A;
  /* Slate 900 */
  --color-text-muted: #475569;
  /* Slate 600 - Oscurecido para mejor legibilidad */

  --color-accent: #0F4C5C;
  --color-accent-hover: #0a333e;

  --color-border: #E2E8F0;
  /* Slate 200 */

  --font-main: 'Inter', system-ui, -apple-system, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  --radius: 4px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  color: var(--color-text-main);
  background-color: var(--color-surface);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5 {
  color: var(--color-text-heading);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.03em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}

p {
  margin-bottom: var(--space-sm);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-accent-hover);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

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

figure {
  margin: 0;
}


/* ==========================================================================
   Utilities
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

.mb-sm {
  margin-bottom: var(--space-sm);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

.mt-sm {
  margin-top: var(--space-sm);
}

.mt-md {
  margin-top: var(--space-md);
}

.bg-surface {
  background-color: var(--color-surface);
}

.bg-muted {
  background-color: var(--color-bg-muted);
}

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

.bg-dark {
  background-color: var(--color-text-heading);
  color: var(--color-surface);
}

.bg-dark h2,
.bg-dark p {
  color: var(--color-surface);
}

.bg-dark p {
  opacity: 0.9;
}

.border-top {
  border-top: 1px solid var(--color-border);
}

.border-bottom {
  border-bottom: 1px solid var(--color-border);
}

/* Badge / Label */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--color-bg-alt);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 100px;
  margin-bottom: var(--space-sm);
  border: 1px solid var(--color-border);
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
section {
  padding: var(--space-xl) 0;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-lg) 0;
  }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 80px;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.logo {
  display: block;
}

.logo img {
  height: 28px;
  width: auto;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  align-items: center;
}

.main-nav a {
  color: var(--color-text-main);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.main-nav a.btn {
  border-bottom: none;
  padding: 0.6rem 1.25rem;
}

.main-nav a.btn:hover {
  border-bottom: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff !important;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff !important;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text-heading);
}

.btn-outline:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text-heading);
  background-color: var(--color-bg-muted);
}

.btn-outline.btn-light {
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

.btn-outline.btn-light:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn-link {
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.btn-link:hover {
  gap: 0.5rem;
}

/* ==========================================================================
   Hero Sections
   ========================================================================== */
.hero {
  padding: var(--space-xl) 0 var(--space-lg);
  background-color: var(--color-bg-muted);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-lg);
  align-items: center;
}

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

  .hero-visual {
    display: none;
  }
}

.hero-content {
  max-width: 700px;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  position: relative;
}

.hero-visual img {
  max-width: 300px;
  opacity: 0.03;
  user-select: none;
  pointer-events: none;
}

/* ==========================================================================
   Component Blocks
   ========================================================================== */
/* Grid systems */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-lg);
  align-items: start;
}

@media(max-width: 768px) {

  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.card .btn-link {
  margin-top: auto;
}

/* Split Text Block */
.split-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}

@media (max-width: 850px) {
  .split-content {
    grid-template-columns: 1fr;
  }
}

.split-text h2 {
  margin-bottom: var(--space-sm);
}

.split-text p {
  font-size: 1.05rem;
}

.split-text p.lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
}

/* Check List */
.check-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 768px) {
  .check-list {
    grid-template-columns: 1fr;
  }
}

.check-list li {
  position: relative;
  padding-left: 1.75rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.check-list strong {
  display: block;
  color: var(--color-text-heading);
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

/* Timeline Process */
.process-list {
  list-style: none;
  counter-reset: step;
  border-left: 2px solid var(--color-border);
  margin-left: 1rem;
  padding-left: 2.5rem;
  margin-top: 0;
}

.process-list li {
  position: relative;
  margin-bottom: var(--space-lg);
}

.process-list li:last-child {
  margin-bottom: 0;
}

.process-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -3.65rem;
  top: -0.25rem;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--color-bg-muted);
  border: 2px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.9rem;
}

.process-list h3 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
  color: var(--color-text-heading);
}

.process-list p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Box Info / Callout */
.info-box {
  background-color: var(--color-surface);
  padding: var(--space-md);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-text-muted);
}

.info-box.accent {
  border-left-color: var(--color-accent);
}

/* FAQ */
.faq-list {
  border-top: 1px solid var(--color-border);
}

details {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
}

summary {
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text-heading);
  font-size: 1.05rem;
  list-style: none;
  position: relative;
  padding-right: 2rem;
  outline: none;
  transition: var(--transition);
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  font-weight: 400;
}

details[open] summary {
  color: var(--color-accent);
}

details[open] summary::after {
  content: "−";
  color: var(--color-accent);
}

details p {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  padding-right: 2rem;
  font-size: 0.95rem;
}

/* Final CTA Band */
.cta-band {
  padding: var(--space-lg) 0;
  text-align: center;
}

/* Breadcrumbs */
.breadcrumb {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}

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

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

.breadcrumb span {
  margin: 0 0.5rem;
  color: var(--color-border);
}

/* Placeholder Boxes for Grid (Projects) */
.placeholder-box {
  background-color: var(--color-bg-alt);
  border: 1px dashed var(--color-border);
  height: 250px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-bg-muted);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

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

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-logo {
  margin-bottom: var(--space-sm);
  display: block;
}

.footer-logo img {
  height: 24px;
  opacity: 0.9;
}

.footer-col p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--color-text-heading);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-bottom-links a {
  color: var(--color-text-muted);
  margin-left: 1rem;
}

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

@media (max-width: 600px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }

  .footer-bottom-links a {
    margin: 0 0.5rem;
  }
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  color: var(--color-text-heading);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: relative;
  }

  .main-nav ul {
    display: none;
    position: absolute;
    top: calc(100% + 15px);
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 250px;
    gap: 0.25rem;
  }

  .main-nav ul.active {
    display: flex;
  }

  .main-nav a {
    padding: 0.75rem 1rem;
    width: 100%;
    border-bottom: none !important;
    border-radius: var(--radius);
  }

  .main-nav a:hover,
  .main-nav a[aria-current="page"] {
    background: var(--color-bg-muted);
    color: var(--color-text-heading);
  }

  .main-nav a.btn {
    margin-top: 0.5rem;
    text-align: center;
    color: #fff !important;
  }
}

/* ==========================================================================
   Forms & Conversion Elements (Phase 5)
   ========================================================================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-heading);
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-main);
  font-size: 1rem;
  color: var(--color-text-main);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(15, 76, 92, 0.1);
}

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

.privacy-notice {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

/* Micro-Trust Area (Hero) */
.micro-trust {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
  list-style: none;
  padding: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.micro-trust li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.micro-trust svg {
  width: 14px;
  height: 14px;
  color: var(--color-accent);
}

/* Persistent Floating CTA */
.btn-floating {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background-color: var(--color-text-heading);
  color: #fff;
  padding: 0.6rem 1.25rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-md);
  z-index: 1000;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-floating:hover {
  text-decoration: none;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  background-color: var(--color-accent);
}

.btn-floating svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

@media (max-width: 768px) {
  .btn-floating {
    bottom: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
}