:root {
  --bg: #0b0d10;
  --bg-alt: #101317;
  --surface: #161a1f;
  --surface-2: #1d2228;
  --border: #252b33;
  --border-strong: #3a424d;
  --text: #e8ebef;
  --muted: #9aa3ae;
  --accent: #c9e03a;
  --accent-soft: rgba(201, 224, 58, .12);
  --accent-ink: #0b0d10;
  --error: #ff6b6b;
  --radius: 14px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; margin: 0; }
p, figure { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.container { width: min(1160px, 100% - 40px); margin-inline: auto; }

.eyebrow {
  font: 500 13px/1 var(--font-display);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

/* Botones y links */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font: 500 15px/1 var(--font-display);
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #d8ec5a; }
.btn-primary:disabled { opacity: .6; cursor: wait; transform: none; }
.btn-ghost { border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--muted); }

.link-arrow { color: var(--accent); text-decoration: none; font-weight: 500; white-space: nowrap; }
.link-arrow::after { content: " →"; display: inline-block; transition: transform .2s; }
.link-arrow:hover::after { transform: translateX(3px); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 13, 16, .8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: 14px; color: var(--muted); text-decoration: none; transition: color .2s; }
.nav a:hover { color: var(--text); }
.nav .nav-cta { color: var(--accent-ink); background: var(--accent); padding: 9px 18px; border-radius: 999px; font-weight: 500; }
.nav .nav-cta:hover { color: var(--accent-ink); background: #d8ec5a; }

/* Hero */
.hero {
  position: relative;
  padding: clamp(72px, 12vw, 140px) 0 56px;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 30% 40%, #000 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 30% 40%, #000 10%, transparent 70%);
  opacity: .5;
}
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: 560px;
  height: 560px;
  right: -140px;
  top: -120px;
  background: radial-gradient(circle, rgba(201, 224, 58, .18), transparent 65%);
}
.hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(40px, 6vw, 80px); align-items: center; }
.hero h1 { font-size: clamp(40px, 6.4vw, 76px); font-weight: 700; letter-spacing: -.03em; }
.hero-lead { color: var(--muted); font-size: clamp(17px, 1.6vw, 20px); max-width: 38ch; margin-top: 24px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

/* Diagrama del flujo de pago */
.flow {
  background: rgba(22, 26, 31, .7);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: grid;
  gap: 14px;
}
.flow-side { font: 500 12px/1 var(--font-display); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.flow-side-iss { text-align: right; }
.flow-steps { position: relative; display: grid; gap: 10px; }
.flow-steps::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: linear-gradient(var(--accent), var(--border-strong) 50%, var(--accent));
}
.flow-steps li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font: 500 15px/1.2 var(--font-display);
}
.flow-dot { width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 2px solid var(--border-strong); flex: none; }
.flow-steps li:not(:nth-child(4)) .flow-dot { border-color: var(--accent); background: var(--accent); }
.flow figcaption { color: var(--muted); font-size: 13px; margin-top: 4px; }

.capabilities {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.capabilities li { font-size: 14px; padding: 6px 14px; border: 1px solid var(--border); border-radius: 999px; color: var(--text); }
.capabilities .capabilities-label { border: 0; padding-left: 0; color: var(--muted); }

/* Secciones */
.section { padding: clamp(72px, 10vw, 120px) 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-head { margin-bottom: 48px; max-width: 720px; }
.section-head h2, .contact-info h2 { font-size: clamp(30px, 4.6vw, 48px); letter-spacing: -.02em; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }

/* Especialidades */
.specialties { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.specialty { padding: clamp(28px, 4vw, 40px); display: flex; flex-direction: column; gap: 16px; }
.specialty-icon {
  width: 48px;
  height: 48px;
  padding: 11px;
  border-radius: 12px;
  background: var(--accent-soft);
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.6;
  stroke-linecap: round;
}
.specialty h3 { font-size: 30px; margin-top: 8px; }
.specialty-for { color: var(--muted); font-size: 17px; }
.checklist { display: grid; gap: 10px; margin: 8px 0 12px; }
.checklist li { position: relative; padding-left: 28px; }
.checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 7px;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}
.specialty .link-arrow { margin-top: auto; }

/* Modelos de trabajo */
.models { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.model { padding: 32px; transition: border-color .2s; }
.model:hover { border-color: var(--border-strong); }
.model-num { font: 500 13px/1 var(--font-display); color: var(--accent); }
.model h3 { font-size: 22px; margin: 24px 0 10px; }
.model p { color: var(--muted); }

/* Casos */
.cases { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.case { overflow: hidden; display: flex; flex-direction: column; transition: transform .25s, border-color .25s; }
.case:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.case img, .case-visual { aspect-ratio: 3 / 2; width: 100%; object-fit: cover; }
.case-visual { background: radial-gradient(circle at 70% 70%, rgba(201, 224, 58, .16), transparent 60%), var(--surface-2); display: flex; }
.case-visual svg { width: 100%; height: 100%; }
.cv-card { fill: #2a3139; stroke: var(--border-strong); }
.cv-stripe { fill: #1a1f25; }
.cv-chip { fill: var(--accent); opacity: .85; }
.cv-line { fill: var(--border-strong); }
.cv-lock-bg { fill: var(--bg); stroke: var(--accent); stroke-width: 2; }
.cv-lock { fill: var(--accent); }
.cv-lock-shackle { fill: none; stroke: var(--accent); stroke-width: 3.5; }
.case-body { padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.case-body h3 { font-size: 21px; }
.case-body p { color: var(--muted); font-size: 15px; }
.case-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.case-tags li { font-size: 12px; padding: 3px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.case-tags .tag-confidential { background: var(--surface-2); color: var(--text); border: 1px solid var(--border-strong); }
.tag-confidential::before { content: "🔒 "; font-size: 11px; }
.cases-note { margin-top: 32px; text-align: center; color: var(--muted); }

/* Proceso */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; counter-reset: step; }
.steps li { border-top: 2px solid var(--border-strong); padding-top: 18px; }
.steps li:nth-child(4) { border-top-color: var(--accent); }
.steps span { font: 500 13px/1 var(--font-display); color: var(--accent); }
.steps h3 { font-size: 19px; margin: 12px 0 8px; }
.steps p { color: var(--muted); font-size: 15px; }

/* Contacto */
.contact { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.lead { color: var(--muted); font-size: 18px; margin-top: 16px; }
.info-list { margin: 40px 0 0; display: grid; gap: 24px; }
.info-list dt { font: 500 13px/1 var(--font-display); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.info-list dd { margin: 0; font-size: 17px; }
.info-list a { text-decoration: none; border-bottom: 1px solid var(--border-strong); transition: border-color .2s; }
.info-list a:hover { border-color: var(--accent); }

.form { padding: clamp(24px, 4vw, 40px); display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 8px; align-content: start; }
.field label { font-size: 14px; color: var(--muted); }
.field input, .field textarea, .field select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 14px;
  color: var(--text);
  font: inherit;
  transition: border-color .2s;
}
.field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 20px) 55%, calc(100% - 15px) 55%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 40px;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); }
.field [aria-invalid="true"] { border-color: var(--error); }
.form .btn { justify-self: start; }
.form-status { font-size: 15px; min-height: 1.6em; }
.form-status.is-success { color: var(--accent); }
.form-status.is-error { color: var(--error); }

/* Footer */
.site-footer { padding: 32px 0; color: var(--muted); font-size: 14px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer-nav a { text-decoration: none; transition: color .2s; }
.footer-nav a:hover { color: var(--text); }

@media (max-width: 960px) {
  .nav li:not(:last-child) { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 0; }
  .steps li { display: grid; grid-template-columns: 40px 1fr; column-gap: 12px; padding: 18px 0; }
  .steps span { grid-row: span 2; padding-top: 4px; }
  .steps h3 { margin: 0 0 4px; }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .form .btn, .hero-actions .btn { width: 100%; }
  .capabilities { margin-top: 48px; }
  .capabilities .capabilities-label { width: 100%; }
  .cases { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}