/* ==========================================================================
   Espiral Global — Main Stylesheet
   Brand: Dark navy + gold accents, Syne font family
   Target: Mexican entrepreneurs scaling internationally
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&display=swap');

/* --- Custom Properties --- */
:root {
  --navy-deep: #0a0e1a;
  --navy: #0f1629;
  --navy-light: #161d35;
  --navy-mid: #1c2541;
  --gold: #c9a84c;
  --gold-light: #e0c872;
  --gold-dim: rgba(201, 168, 76, 0.15);
  --gold-glow: rgba(201, 168, 76, 0.25);
  --text-primary: #e8e6e1;
  --text-secondary: #9a978f;
  --text-muted: #6b6860;
  --border: rgba(201, 168, 76, 0.12);
  --border-hover: rgba(201, 168, 76, 0.3);
  --font: 'Syne', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--navy-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: var(--gold); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--gold-light); }

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

/* --- Utility --- */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* --- Navigation --- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s ease;
}

.nav.scrolled { padding: 12px 0; }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.nav-logo span { color: var(--gold); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s ease;
}

.nav-cta:hover {
  background: var(--gold);
  color: var(--navy-deep);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 100px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80vw;
  height: 80vw;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-dim) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--navy-deep), transparent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: 28px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-dim);
  border: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

.hero h1 .accent { color: var(--gold); }

.hero-sub {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 44px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: var(--gold);
  color: var(--navy-deep);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-primary:hover {
  background: var(--gold-light);
  color: var(--navy-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--gold-glow);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* --- Section Common --- */
.section {
  padding: 120px 0;
  position: relative;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 60px;
}

/* --- Services --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  padding: 40px 36px;
  background: var(--navy);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.5rem;
  color: var(--gold);
  background: var(--gold-dim);
  border: 1px solid var(--border);
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.service-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* --- Stats Band --- */
.stats {
  padding: 80px 0;
  background: var(--navy);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

/* --- About / Process --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.process-steps {
  counter-reset: steps;
}

.process-step {
  counter-increment: steps;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
  padding-left: 60px;
}

.process-step::before {
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 28px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--gold);
  opacity: 0.6;
}

.process-step h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  padding: 140px 0;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-dim) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .section-title {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .section-desc {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 40px;
}

/* --- Footer --- */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
  display: block;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 48px;
}

.footer-col h5 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.footer-col a:hover { color: var(--gold); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }
  .footer-inner { flex-direction: column; }
  .footer-links { flex-wrap: wrap; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  /* 3-step framework: stack vertically on tablet */
  .framework-steps {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .framework-connector {
    padding-top: 0;
    padding: 8px 0;
    flex-direction: row;
    gap: 8px;
  }
  .framework-connector::before {
    width: 40px;
    height: 2px;
    background: linear-gradient(to right, var(--gold), transparent);
  }
}

@media (max-width: 600px) {
  .hero { padding: 120px 0 80px; }
  .section { padding: 80px 0; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .service-card { padding: 28px 24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cta-section { padding: 100px 0; }
  .framework-section { padding: 80px 0; }
  .framework-step { padding: 28px 24px 32px; }
  .step-num { font-size: 2.4rem; }
}

/* --- 3-Step Framework --- */
.framework-section {
  padding: 120px 0;
  position: relative;
}

.framework-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 80px;
}

.framework-header .section-label { display: block; margin-bottom: 16px; }

.framework-steps {
  display: grid;
  grid-template-columns: 1fr 64px 1fr 64px 1fr;
  align-items: start;
  gap: 0;
  position: relative;
}

.framework-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 56px; /* align with step header area */
  color: var(--gold);
  opacity: 0.5;
  font-size: 1.6rem;
  font-weight: 300;
  letter-spacing: -0.05em;
  flex-direction: column;
  gap: 4px;
}

.framework-connector::before {
  content: '';
  display: block;
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  opacity: 0.4;
}

.framework-step {
  background: var(--navy);
  border: 1px solid var(--border);
  padding: 40px 36px 44px;
  position: relative;
  transition: all 0.3s ease;
  overflow: hidden;
}

.framework-step::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.framework-step:hover {
  border-color: var(--border-hover);
  box-shadow: 0 16px 50px rgba(0,0,0,0.35);
  transform: translateY(-4px);
}

.framework-step:hover::after { opacity: 1; }

.step-number-line {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.step-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  opacity: 0.9;
}

.step-num-divider {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.step-timeline {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-dim);
  border: 1px solid var(--border);
  padding: 4px 12px;
  white-space: nowrap;
}

.framework-step h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  line-height: 1.25;
}

.framework-step p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.step-bullets {
  list-style: none;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step-bullets li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.step-bullets li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: 0.8rem;
}

.step-price {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-top: auto;
}

.step-price-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.step-price-amount {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.step-price-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 3px;
  line-height: 1.4;
}

/* --- WhatsApp Floating Button --- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 60px;
  height: 60px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25D366;
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: #fff;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
  }
  .whatsapp-float svg {
    width: 26px;
    height: 26px;
  }
}

/* --- Subtle Animations --- */
@media (prefers-reduced-motion: no-preference) {
  .service-card,
  .process-step,
  .stat-number,
  .framework-step {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s ease forwards;
  }

  .service-card:nth-child(1) { animation-delay: 0.1s; }
  .service-card:nth-child(2) { animation-delay: 0.2s; }
  .service-card:nth-child(3) { animation-delay: 0.3s; }
  .service-card:nth-child(4) { animation-delay: 0.4s; }

  .process-step:nth-child(1) { animation-delay: 0.1s; }
  .process-step:nth-child(2) { animation-delay: 0.2s; }
  .process-step:nth-child(3) { animation-delay: 0.3s; }
  .process-step:nth-child(4) { animation-delay: 0.4s; }

  /* Framework steps animate with stagger */
  .framework-step:nth-child(1) { animation-delay: 0.1s; }
  .framework-step:nth-child(3) { animation-delay: 0.3s; }
  .framework-step:nth-child(5) { animation-delay: 0.5s; }

  @keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
  }
}