/* ============================================
   BASE
   ============================================ */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-optical);
  font-feature-settings: 'ss01', 'cv11';
}

::selection {
  background: var(--color-midnight);
  color: var(--color-optical);
}

a {
  transition: color var(--transition-fast);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-midnight);
  color: var(--color-optical);
  padding: var(--sp-2);
  z-index: 100;
}
.skip-link:focus {
  left: var(--sp-2);
  top: var(--sp-2);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-3);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--sp-4); }
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--sp-7);
  scroll-margin-top: var(--header-h);
}

@media (min-width: 960px) {
  .section { padding-block: var(--sp-8); }
}

.section-light  { background: var(--color-optical); }
.section-pale   { background: linear-gradient(180deg, var(--color-optical) 0%, var(--color-platinum-light) 100%); }
.section-dark   { background: var(--color-midnight); color: var(--color-optical); }

/* ============================================
   TYPOGRAPHY UTILITIES
   ============================================ */
.eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-3);
}
.eyebrow-dark  { color: var(--color-midnight); }
.eyebrow-light { color: var(--color-accent-soft); }

.section-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(2rem, 4vw, var(--fs-3xl));
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-midnight);
  margin-bottom: var(--sp-3);
}
.section-title em {
  font-style: italic;
  color: var(--color-accent);
  font-weight: 500;
}
.section-title-light { color: var(--color-optical); }
.section-title-light em { color: var(--color-accent); }

.section-lead {
  max-width: 640px;
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  color: var(--color-muted);
}
.section-lead-light { color: var(--color-platinum); }

.section-header {
  margin-bottom: var(--sp-6);
}
.section-header-center {
  text-align: center;
  margin-inline: auto;
}
.section-header-center .section-lead { margin-inline: auto; }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  padding: 0.85rem 1.6rem;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-midnight);
  color: var(--color-optical);
}
.btn-primary:hover {
  background: var(--color-midnight-soft);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-optical);
  border: 1px solid rgba(232, 234, 237, 0.25);
}
.btn-ghost:hover {
  background: rgba(232, 234, 237, 0.06);
  border-color: var(--color-accent);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--fs-base);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(250, 251, 252, 0);
  border-bottom: 1px solid transparent;
  transition: background var(--transition-base), border-color var(--transition-base), backdrop-filter var(--transition-base);
}
.site-header.is-scrolled {
  background: rgba(250, 251, 252, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom-color: var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  color: var(--color-optical);
  transition: color var(--transition-base);
}
.site-header.is-scrolled .logo { color: var(--color-midnight); }

.logo-mark {
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-right: var(--sp-1);
  align-self: center;
  box-shadow: 0 0 0 4px rgba(201, 169, 110, 0.15);
}

.logo-serif {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-lg);
  letter-spacing: var(--tracking-tight);
}
.logo-dot {
  color: var(--color-accent);
  font-size: var(--fs-lg);
  line-height: 1;
  transform: translateY(-2px);
}
.logo-sans {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--fs-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  opacity: 0.85;
}

/* NAV */
.nav {
  display: none;
  align-items: center;
  gap: var(--sp-4);
}
@media (min-width: 960px) {
  .nav { display: flex; }
}

.nav-list {
  display: flex;
  gap: var(--sp-4);
  align-items: center;
}

.nav-link {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-optical);
  padding-block: 0.5rem;
  transition: color var(--transition-fast);
}
.site-header.is-scrolled .nav-link { color: var(--color-text); }

.nav-link::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}
.nav-link:hover::after,
.nav-link.is-active::after { transform: scaleX(1); }
.nav-link.is-active { color: var(--color-accent); }

.nav-cta {
  padding: 0.6rem 1.2rem;
  font-size: var(--fs-sm);
}
@media (min-width: 960px) {
  .site-header:not(.is-scrolled) .nav-cta {
    background: var(--color-optical);
    color: var(--color-midnight);
  }
}

/* MOBILE NAV TOGGLE */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
}
@media (min-width: 960px) {
  .nav-toggle { display: none; }
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background: var(--color-optical);
  transition: transform var(--transition-base), opacity var(--transition-fast), background var(--transition-base);
}
.site-header.is-scrolled .nav-toggle-bar { background: var(--color-midnight); }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* MOBILE NAV PANEL */
@media (max-width: 959px) {
  .nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--color-midnight);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: var(--sp-4);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    display: flex;
    visibility: hidden;
  }
  .nav.is-open {
    transform: translateX(0);
    visibility: visible;
  }
  .nav-list {
    flex-direction: column;
    gap: 0;
    align-items: stretch;
  }
  .nav-list li { border-bottom: 1px solid var(--color-border-dark); }
  .nav-link {
    display: block;
    padding-block: var(--sp-3);
    font-size: var(--fs-lg);
    color: var(--color-optical);
  }
  .nav-cta {
    margin-top: var(--sp-4);
    background: var(--color-accent);
    color: var(--color-midnight);
  }
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--color-midnight-deep);
  color: var(--color-optical);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-grid {
  width: 100%;
  height: 100%;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--sp-7);
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2.4rem, 6vw, var(--fs-5xl));
  line-height: 1.05;
  letter-spacing: var(--tracking-tight);
  max-width: 14ch;
  margin-bottom: var(--sp-3);
}
.hero-title em {
  font-style: italic;
  color: var(--color-accent);
  font-weight: 400;
}

.hero-lead {
  max-width: 56ch;
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  color: var(--color-platinum);
  margin-bottom: var(--sp-5);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-7);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
  border-top: 1px solid var(--color-border-dark);
  padding-top: var(--sp-4);
  max-width: 720px;
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero-meta-num {
  font-family: var(--font-serif);
  font-size: var(--fs-2xl);
  color: var(--color-optical);
  letter-spacing: var(--tracking-tight);
}
.hero-meta-label {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-platinum);
}

@media (max-width: 640px) {
  .hero-meta { grid-template-columns: 1fr; gap: var(--sp-2); }
}

/* ============================================
   GRIDS
   ============================================ */
.grid {
  display: grid;
  gap: var(--sp-4);
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

@media (min-width: 960px) {
  .grid { gap: var(--sp-5); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================
   FEATURE (Diferencial IA)
   ============================================ */
.feature {
  padding: var(--sp-4) 0;
  border-top: 1px solid var(--color-border);
}
.feature-num {
  font-family: var(--font-serif);
  font-size: var(--fs-sm);
  color: var(--color-accent);
  letter-spacing: var(--tracking-widest);
  margin-bottom: var(--sp-3);
}
.feature-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-xl);
  letter-spacing: var(--tracking-tight);
  color: var(--color-midnight);
  margin-bottom: var(--sp-2);
}
.feature-text {
  color: var(--color-muted);
  line-height: var(--lh-snug);
}

/* ============================================
   SPLIT (Capital section)
   ============================================ */
.split {
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 960px) {
  .split { grid-template-columns: 1.2fr 1fr; gap: var(--sp-6); }
}

.service-list {
  display: flex;
  flex-direction: column;
  margin-top: var(--sp-4);
}
.service-list li {
  padding-block: var(--sp-3);
  border-top: 1px solid var(--color-border);
}
.service-list li:last-child { border-bottom: 1px solid var(--color-border); }
.service-list h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-base);
  color: var(--color-midnight);
  margin-bottom: 0.4rem;
}
.service-list p {
  color: var(--color-muted);
  font-size: var(--fs-sm);
  line-height: var(--lh-snug);
}

.split-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.quote-card {
  background: var(--color-midnight);
  color: var(--color-optical);
  padding: var(--sp-4);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.quote-card::before {
  content: '“';
  position: absolute;
  top: -20px;
  right: 16px;
  font-family: var(--font-serif);
  font-size: 8rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.25;
}
.quote-card blockquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
  margin-bottom: var(--sp-2);
}
.quote-card figcaption {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
}

.orbit {
  width: 100%;
  max-width: 320px;
  margin-inline: auto;
  opacity: 0.85;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-optical);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.card-tag {
  display: inline-block;
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-2);
}

.card-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-lg);
  letter-spacing: var(--tracking-tight);
  color: var(--color-midnight);
  margin-bottom: var(--sp-2);
}
.card p { color: var(--color-muted); line-height: var(--lh-snug); }

.card-emphasis {
  background: var(--color-midnight);
  border-color: var(--color-midnight);
  color: var(--color-optical);
}
.card-emphasis .card-title { color: var(--color-optical); }
.card-emphasis p { color: var(--color-platinum); }
.card-emphasis:hover { border-color: var(--color-accent); }

.card-dark {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--color-border-dark);
}
.card-dark .card-title { color: var(--color-optical); }
.card-dark p { color: var(--color-platinum); }
.card-dark:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--color-accent);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3);
}

/* ============================================
   MANIFESTO
   ============================================ */
.manifesto {
  background: var(--color-midnight-deep);
  color: var(--color-optical);
  padding-block: var(--sp-8);
  text-align: center;
}
.manifesto-quote {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-style: italic;
  line-height: 1.4;
  color: var(--color-optical);
  margin-bottom: var(--sp-3);
  letter-spacing: var(--tracking-tight);
}
.manifesto-attr {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ============================================
   CONTACT
   ============================================ */
.section-contact {
  background: linear-gradient(180deg, var(--color-platinum-light) 0%, var(--color-optical) 100%);
}

.contact-form {
  margin-top: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  background: var(--color-optical);
  padding: var(--sp-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.field-label {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-midnight);
  font-weight: 500;
}
.field input,
.field select,
.field textarea {
  padding: 0.85rem 1rem;
  background: var(--color-optical);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.field textarea { resize: vertical; min-height: 100px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.15);
}

.honeypot {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-feedback {
  margin-top: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  line-height: var(--lh-snug);
  border: 1px solid transparent;
}
.form-feedback[data-status="success"] {
  background: rgba(201, 169, 110, 0.12);
  border-color: var(--color-accent);
  color: var(--color-midnight);
}
.form-feedback[data-status="error"] {
  background: rgba(220, 38, 38, 0.06);
  border-color: rgba(220, 38, 38, 0.4);
  color: #991B1B;
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-top: var(--sp-2);
}
.form-actions .btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}
.form-note {
  font-size: var(--fs-xs);
  color: var(--color-muted);
  max-width: 320px;
}

.contact-direct {
  text-align: center;
  margin-top: var(--sp-4);
  color: var(--color-muted);
  font-size: var(--fs-sm);
}
.contact-direct a {
  color: var(--color-midnight);
  font-weight: 500;
  border-bottom: 1px solid var(--color-accent);
}
.contact-direct a:hover { color: var(--color-accent); }

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-midnight-deep);
  color: var(--color-platinum);
  padding-top: var(--sp-7);
  padding-bottom: var(--sp-3);
}
.footer-inner {
  display: grid;
  gap: var(--sp-5);
  grid-template-columns: 1fr;
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--color-border-dark);
}
@media (min-width: 768px) {
  .footer-inner { grid-template-columns: 2fr 1fr 1fr; }
}

.logo-light { color: var(--color-optical); }
.footer-tagline {
  margin-top: var(--sp-2);
  font-size: var(--fs-sm);
  max-width: 32ch;
  color: var(--color-platinum);
}
.footer-nav h4,
.footer-contact h4 {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-2);
  font-weight: 500;
}
.footer-nav ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-nav a,
.footer-contact a {
  color: var(--color-platinum);
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
}
.footer-nav a:hover,
.footer-contact a:hover { color: var(--color-optical); }
.footer-contact p {
  font-size: var(--fs-sm);
  margin-bottom: 0.4rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--sp-2);
  padding-top: var(--sp-3);
  font-size: var(--fs-xs);
  color: var(--color-muted);
}
.footer-meta { color: var(--color-muted); }

/* ============================================
   ENTRANCE ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}