/* ============================================
   TU AGENTE EN CHINA — Estilos globales
   Paleta corporativa: azul marino + blanco + dorado
============================================ */

:root {
  --color-primary: #0a2540;      /* Azul marino */
  --color-primary-dark: #061a30;
  --color-accent: #c9a875;        /* Dorado suave */
  --color-accent-dark: #b08e5e;
  --color-light: #f6f8fb;
  --color-white: #ffffff;
  --color-text: #1a2b42;
  --color-text-muted: #5b6b80;
  --color-border: #e3e8ef;
  --color-success: #1f7a4d;

  --shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 37, 64, 0.10);
  --shadow-lg: 0 18px 48px rgba(10, 37, 64, 0.14);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --container: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-accent-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); margin-bottom: 1rem; }
h3 { font-size: 1.35rem; margin-bottom: .6rem; }

p { margin-bottom: 1rem; color: var(--color-text); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #143862 100%);
  color: var(--color-accent);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .5px;
}

.logo-img {
  height: 48px;
  width: auto;
  display: block;
}

.logo-img-footer {
  height: 56px;
  background: var(--color-white);
  padding: 6px 12px;
  border-radius: 8px;
}

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

.nav-links a {
  font-size: .95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 6px 0;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
}

.nav-cta {
  background: var(--color-primary);
  color: var(--color-white) !important;
  padding: 10px 22px !important;
  border-radius: 6px;
  font-weight: 600;
}

.nav-cta:hover { background: var(--color-primary-dark); color: var(--color-white) !important; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  margin: 5px 0;
  transition: .3s;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all .2s;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-primary-dark); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-accent {
  background: var(--color-accent);
  color: var(--color-primary);
}
.btn-accent:hover { background: var(--color-accent-dark); color: var(--color-primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); }

.btn-whatsapp {
  background: #25d366;
  color: var(--color-white);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-whatsapp:hover { background: #1ebe5d; color: var(--color-white); }

/* ---------- HERO ---------- */
.hero {
  background: linear-gradient(135deg, #0a2540 0%, #143862 60%, #1c4a7f 100%);
  color: var(--color-white);
  padding: 100px 0 110px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(201, 168, 117, 0.18) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 760px;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: 1.4rem;
}

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

.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2.2rem;
  max-width: 640px;
}

.hero-badge {
  display: inline-block;
  background: rgba(201, 168, 117, 0.15);
  color: var(--color-accent);
  border: 1px solid rgba(201, 168, 117, 0.4);
  padding: 6px 16px;
  border-radius: 99px;
  font-size: .85rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  letter-spacing: .5px;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
}

.hero-stat-num {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  color: var(--color-accent);
  font-weight: 700;
  line-height: 1;
}

.hero-stat-label {
  font-size: .9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: .4rem;
}

/* ---------- SECTIONS ---------- */
section { padding: 80px 0; }

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-eyebrow {
  text-transform: uppercase;
  font-size: .8rem;
  letter-spacing: 2px;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-bottom: .8rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.08rem;
}

/* ---------- SERVICES GRID ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: all .3s;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary), #143862);
  color: var(--color-accent);
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: 1.4rem;
}

.service-card h3 { margin-bottom: .8rem; }

.service-card p {
  color: var(--color-text-muted);
  font-size: .96rem;
  margin-bottom: 0;
}

/* ---------- WHY US ---------- */
.bg-light { background: var(--color-light); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

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

.why-num {
  font-family: var(--font-heading);
  font-size: 3rem;
  color: var(--color-accent);
  font-weight: 700;
  line-height: 1;
  margin-bottom: .8rem;
}

.why-item h3 { margin-bottom: .5rem; }
.why-item p { color: var(--color-text-muted); font-size: .95rem; }

/* ---------- PROCESS ---------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  position: relative;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 64px;
  height: 64px;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  color: var(--color-primary);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.2rem;
  position: relative;
  z-index: 2;
}

.step h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.step p { color: var(--color-text-muted); font-size: .95rem; }

/* ---------- TESTIMONIALS ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.testimonial {
  background: var(--color-white);
  padding: 32px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.testimonial-quote {
  font-style: italic;
  color: var(--color-text);
  margin-bottom: 1.4rem;
  font-size: 1.02rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-white);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-family: var(--font-heading);
}

.author-name { font-weight: 600; color: var(--color-primary); }
.author-role { font-size: .85rem; color: var(--color-text-muted); }

/* ---------- CTA SECTION ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, #143862 100%);
  color: var(--color-white);
  text-align: center;
  padding: 80px 24px;
  border-radius: var(--radius-lg);
  margin: 60px auto;
  max-width: calc(var(--container) - 48px);
}

.cta-section h2 { color: var(--color-white); }
.cta-section p { color: rgba(255, 255, 255, 0.85); max-width: 540px; margin: 0 auto 2rem; font-size: 1.08rem; }

/* ---------- BLOG ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.blog-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}

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

.blog-card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary), #1c4a7f);
  position: relative;
  display: grid;
  place-items: center;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 3rem;
}

.blog-card-body {
  padding: 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-tag {
  display: inline-block;
  background: var(--color-light);
  color: var(--color-accent-dark);
  font-size: .75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: .8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  align-self: flex-start;
}

.blog-card h3 {
  font-size: 1.2rem;
  margin-bottom: .6rem;
}

.blog-card p {
  color: var(--color-text-muted);
  font-size: .95rem;
  flex: 1;
}

.blog-card-meta {
  font-size: .85rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* ---------- BLOG ARTICLE ---------- */
.article-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #143862 100%);
  color: var(--color-white);
  padding: 80px 0 60px;
  text-align: center;
}

.article-hero h1 { color: var(--color-white); max-width: 800px; margin: 1rem auto; }
.article-hero .article-meta { color: rgba(255, 255, 255, 0.75); }

.article-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 60px 24px;
}

.article-body h2 { margin-top: 2.5rem; margin-bottom: 1rem; }
.article-body h3 { margin-top: 2rem; }
.article-body p { font-size: 1.08rem; line-height: 1.8; color: var(--color-text); margin-bottom: 1.2rem; }
.article-body ul, .article-body ol { margin: 1rem 0 1.5rem 1.5rem; }
.article-body li { margin-bottom: .6rem; line-height: 1.7; }
.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.5rem;
  margin: 1.8rem 0;
  background: var(--color-light);
  font-style: italic;
  color: var(--color-text);
}

.article-figure {
  margin: 2.5rem 0;
}

.article-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.article-figure figcaption {
  text-align: center;
  font-size: .9rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: .8rem;
}

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-methods { display: flex; flex-direction: column; gap: 20px; }

.contact-method {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 22px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all .2s;
}

.contact-method:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
}

.contact-method-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--color-light);
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  font-size: 1.25rem;
}

.contact-method h4 { color: var(--color-primary); margin-bottom: .2rem; font-family: var(--font-body); font-size: 1rem; font-weight: 600; }
.contact-method p { margin: 0; color: var(--color-text-muted); font-size: .95rem; }
.contact-method a { color: var(--color-primary); font-weight: 500; }

/* ---------- FORM ---------- */
.contact-form {
  background: var(--color-white);
  padding: 36px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  font-size: .92rem;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color .2s;
  background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201, 168, 117, 0.15);
}

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

.form-success {
  background: #e9f7ef;
  border: 1px solid var(--color-success);
  color: var(--color-success);
  padding: 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  display: none;
  font-size: .95rem;
}

/* ---------- PAGE HEADER (interior) ---------- */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, #143862 100%);
  color: var(--color-white);
  padding: 70px 0 60px;
  text-align: center;
}
.page-header h1 { color: var(--color-white); margin-bottom: .8rem; }
.page-header p { color: rgba(255, 255, 255, 0.85); max-width: 640px; margin: 0 auto; font-size: 1.1rem; }

/* ---------- SERVICE DETAIL ---------- */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 80px;
}

.service-detail:nth-child(even) .service-detail-content { order: 2; }

.service-detail-visual {
  background: linear-gradient(135deg, var(--color-primary), #1c4a7f);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: grid;
  place-items: center;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 5rem;
  box-shadow: var(--shadow-md);
}

.service-detail h2 { font-size: 2rem; }

.service-detail ul {
  margin: 1.2rem 0 1.6rem 1.2rem;
  color: var(--color-text);
}

.service-detail li {
  margin-bottom: .6rem;
  position: relative;
  padding-left: 8px;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, var(--color-primary), #1c4a7f);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/5;
  display: grid;
  place-items: center;
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 6rem;
  box-shadow: var(--shadow-lg);
}

.about-image-photo {
  margin: 0;
}

.about-image-photo img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: block;
  aspect-ratio: 4/5;
  object-fit: cover;
}

.about-image-photo figcaption {
  margin-top: .8rem;
  text-align: center;
  font-size: .9rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
  margin-top: 50px;
}

.value-card {
  text-align: center;
  padding: 28px;
}

.value-icon {
  width: 60px;
  height: 60px;
  background: var(--color-light);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 0 auto 1rem;
  font-size: 1.6rem;
  color: var(--color-primary);
}

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 24px;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo { color: var(--color-white); margin-bottom: 1rem; }
.footer-brand p { color: rgba(255, 255, 255, 0.65); font-size: .95rem; max-width: 320px; }

.footer-col h4 {
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: .9rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: .55rem; }
.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: .95rem;
}
.footer-col a:hover { color: var(--color-accent); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: .85rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- WHATSAPP FLOATING ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background: #25d366;
  color: white;
  border-radius: 50%;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
  z-index: 99;
  transition: transform .2s;
}

.whatsapp-float:hover { transform: scale(1.08); color: white; }

.whatsapp-float svg { width: 32px; height: 32px; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-150%);
    transition: transform .3s;
  }

  .nav-links.open { transform: translateY(0); }

  .menu-toggle { display: block; }

  section { padding: 60px 0; }

  .hero { padding: 70px 0 80px; }

  .contact-grid,
  .about-grid,
  .service-detail { grid-template-columns: 1fr; gap: 36px; }

  .service-detail:nth-child(even) .service-detail-content { order: 0; }

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

  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 60px 24px; margin: 40px 16px; }
}