/* ==========================================================
   Serpro — Landing page
   Paleta de marca: grafito + marfil + naranja Serpro
   ========================================================== */

:root {
  --dark-900: #17191C;
  --dark-800: #212429;
  --dark-700: #3A3F46;
  --ivory: #F4F0E6;
  --paper: #FAF8F3;
  --ink: #15211E;
  --muted: #5E6B66;
  --line: rgba(21, 33, 30, 0.12);
  --line-light: rgba(244, 240, 230, 0.14);
  --orange: #F26522;
  --orange-soft: #FF8A4C;

  --serif: "Newsreader", Georgia, serif;
  --sans: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; cursor: pointer; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, p { margin: 0; }

h1, h2 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.06;
}
h1 em, h2 em { font-style: italic; font-weight: 300; color: var(--dark-700); }
.hero h1 em { color: var(--orange); }
h3 { font-weight: 500; letter-spacing: -0.01em; line-height: 1.3; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 26px;
  border-radius: 4px;
  font-weight: 500;
  font-size: 15.5px;
  border: 1px solid transparent;
  transition: background .3s, color .3s, border-color .3s, box-shadow .3s;
}
.btn .arr { transition: transform .3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }
.btn-dark { background: var(--dark-900); color: var(--ivory); }
.btn-dark:hover { background: var(--dark-700); box-shadow: 0 10px 30px -12px rgba(23, 25, 28, .6); }
.btn-line { border-color: var(--line); }
.btn-line:hover { border-color: var(--ink); }
.btn-orange { background: var(--orange-soft); color: var(--dark-900); }
.btn-orange:hover { background: #FFA470; }
.btn-sm { padding: 10px 18px; font-size: 14px; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(250, 248, 243, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 76px; }
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo-mark { width: 30px; height: 32px; flex: none; transition: transform .4s var(--ease); }
.logo:hover .logo-mark { transform: translateX(2px); }
.logo-word {
  font-family: var(--sans);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--dark-900);
}
.logo-word b { font-weight: 600; color: #8A8F96; }
.nav-links { display: flex; gap: 30px; font-size: 14.5px; color: var(--muted); }
.nav-links a { position: relative; transition: color .2s; }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%; height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 170px 0 110px;
  background: linear-gradient(180deg, var(--ivory), var(--paper));
  overflow: hidden;
}
.hero-lines {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: calc((min(1200px, 100vw) - 48px) / 6) 100%;
  background-position: center;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  opacity: .5;
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero h1 { font-size: clamp(42px, 4.7vw, 68px); }
.hero-sub { max-width: 540px; margin-top: 28px; font-size: 19px; color: var(--muted); }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 40px; }

/* Tarjeta de estado */
.status {
  position: relative;
  padding: 30px;
  border-radius: 10px;
  background: var(--dark-900);
  color: var(--ivory);
  box-shadow: 0 40px 80px -40px rgba(23, 25, 28, .55);
  overflow: hidden;
}
.status::before {
  /* brillo sutil que recorre la tarjeta */
  content: "";
  position: absolute;
  top: 0; left: -60%;
  width: 40%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(242, 101, 34, .12), transparent);
  transform: skewX(-18deg);
  animation: sheen 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes sheen { 0%, 60% { left: -60%; } 100% { left: 130%; } }

.status-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; padding-bottom: 22px; border-bottom: 1px solid var(--line-light); }
.status-kicker { display: block; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--orange-soft); }
.status-month { display: block; margin-top: 4px; font-family: var(--serif); font-weight: 400; font-size: 26px; }
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-light);
  font-size: 13px;
  white-space: nowrap;
}
.status-badge i {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #7FD1A8;
  box-shadow: 0 0 0 0 rgba(127, 209, 168, .6);
  animation: ping 2.4s infinite;
}
@keyframes ping { 70%, 100% { box-shadow: 0 0 0 8px rgba(127, 209, 168, 0); } }

.status-list { list-style: none; margin: 0; padding: 0; }
.status-list li {
  display: grid;
  grid-template-columns: 82px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-light);
  font-size: 15px;
  opacity: 0;
  transform: translateX(-10px);
  animation: row-in .6s var(--ease) forwards;
}
.status-list li:nth-child(1) { animation-delay: .7s; }
.status-list li:nth-child(2) { animation-delay: .95s; }
.status-list li:nth-child(3) { animation-delay: 1.2s; }
.status-list li:nth-child(4) { animation-delay: 1.45s; }
@keyframes row-in { to { opacity: 1; transform: none; } }
.st-area { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--orange-soft); }
.st-task { color: rgba(244, 240, 230, .85); }
.st-ok {
  width: 24px; height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  background: rgba(242, 101, 34, .16);
  color: var(--orange-soft);
}
.status-foot { display: flex; align-items: center; gap: 14px; padding-top: 22px; font-size: 14px; color: rgba(244, 240, 230, .7); }
.status-foot b { color: var(--ivory); font-weight: 500; }
.meter { flex: 1; height: 4px; border-radius: 4px; background: var(--line-light); overflow: hidden; }
.meter i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--orange), var(--orange-soft));
  animation: fill 1.6s 1.6s var(--ease) forwards;
}
@keyframes fill { to { width: 100%; } }

/* ---------- Cifras ---------- */
.figures { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); }
.figures-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.fig { padding: 40px 28px; display: flex; flex-direction: column; gap: 10px; }
.fig + .fig { border-left: 1px solid var(--line); }
.fig b { font-family: var(--serif); font-weight: 400; font-size: 52px; line-height: 1; letter-spacing: -0.03em; color: var(--dark-900); }
.fig > span { font-size: 14.5px; color: var(--muted); line-height: 1.45; }

/* ---------- Secciones ---------- */
.section { padding: 130px 0; }
.head { max-width: 780px; margin-bottom: 60px; }
.section h2 { font-size: clamp(36px, 4.4vw, 60px); }

/* Comparación */
.compare { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.col { padding: 44px; }
.col h3 { font-size: 14px; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 26px; }
.col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.col li { padding: 16px 0 16px 32px; border-top: 1px solid var(--line); position: relative; font-size: 16.5px; }
.col-before { background: var(--paper); color: var(--muted); }
.col-before h3 { color: var(--muted); }
.col-before li::before { content: "—"; position: absolute; left: 0; color: #B5ADA6; }
.col-after { background: var(--dark-900); color: var(--ivory); }
.col-after h3 { color: var(--orange-soft); }
.col-after li { border-color: var(--line-light); }
.col-after li::before { content: "✓"; position: absolute; left: 0; color: var(--orange-soft); }

/* Plan */
.plan { background: var(--ivory); }
.plan-box { background: var(--paper); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.tab {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 26px 32px;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--serif);
  font-size: 28px;
  color: var(--muted);
  transition: color .3s, background .3s;
}
.tab + .tab { border-left: 1px solid var(--line); }
.tab span { font-family: var(--sans); font-size: 13px; letter-spacing: .1em; color: var(--orange); }
.tab::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--dark-900);
  transform: scaleX(0);
  transition: transform .45s var(--ease);
}
.tab:hover { color: var(--ink); }
.tab.is-on { color: var(--dark-900); background: #fff; }
.tab.is-on::after { transform: scaleX(1); }

.panel { display: none; grid-template-columns: 1fr 1.6fr; gap: 50px; padding: 48px 32px; background: #fff; }
.panel.is-on { display: grid; animation: fade .5s var(--ease); }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } }
.panel-intro { font-family: var(--serif); font-size: 26px; line-height: 1.3; font-weight: 300; color: var(--dark-900); }
.items { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; column-gap: 32px; }
.items li { padding: 15px 0 15px 26px; border-top: 1px solid var(--line); position: relative; font-size: 16px; }
.items li::before { content: ""; position: absolute; left: 0; top: 24px; width: 7px; height: 7px; background: var(--orange); transform: rotate(45deg); }

/* Método */
.method { background: var(--dark-900); color: var(--ivory); }
.method h2 em { color: var(--orange-soft); }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-light); }
.step { position: relative; padding: 36px 28px 0 0; }
.step::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  height: 1px; width: 0;
  background: var(--orange-soft);
  transition: width 1.2s var(--ease);
}
.step.in::before { width: 80%; }
.step-n { display: block; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--orange-soft); margin-bottom: 18px; }
.step h3 { font-family: var(--serif); font-weight: 400; font-size: 28px; margin-bottom: 12px; }
.step p { color: rgba(244, 240, 230, .65); font-size: 15.5px; }
.method-note { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line-light); color: rgba(244, 240, 230, .7); font-size: 16px; }

/* Proyectos */
.proj-list { border-top: 1px solid var(--line); }
.proj {
  display: grid;
  grid-template-columns: 90px 1fr 1.3fr;
  gap: 30px;
  align-items: baseline;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding .4s var(--ease);
}
.proj::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ivory);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .45s var(--ease);
  z-index: -1;
}
.proj:hover { padding-left: 20px; }
.proj:hover::before { transform: scaleY(1); }
.proj-n { font-size: 14px; letter-spacing: .1em; color: var(--orange); }
.proj h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(26px, 2.6vw, 34px); }
.proj p { color: var(--muted); }
.projects { position: relative; z-index: 0; }

/* Experiencia */
.experience { background: var(--ivory); }
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.case { padding: 34px 30px; background: var(--paper); display: flex; flex-direction: column; gap: 12px; transition: background .3s; }
.case:hover { background: #fff; }
.case span { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--orange); }
.case h3 { font-size: 19px; }
.case p { margin-top: auto; font-size: 14px; color: var(--muted); }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 70px; }
.faq-list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 26px 50px 26px 0;
  position: relative;
  font-family: var(--serif);
  font-size: 23px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--sans);
  font-size: 24px;
  font-weight: 300;
  color: var(--orange);
  transition: transform .3s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 40px 28px 0; color: var(--muted); }

/* Contacto */
.contact { padding: 130px 0; background: var(--dark-900); color: var(--ivory); }
.contact h2 { font-size: clamp(38px, 4.6vw, 62px); }
.contact h2 em { color: var(--orange-soft); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.contact-copy > p:not(.eyebrow) { margin-top: 20px; color: rgba(244, 240, 230, .7); }
.contact-data { list-style: none; margin: 44px 0 0; padding: 0; border-top: 1px solid var(--line-light); }
.contact-data li { display: grid; grid-template-columns: 110px 1fr; padding: 16px 0; border-bottom: 1px solid var(--line-light); }
.contact-data span { font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--orange-soft); padding-top: 3px; }
.contact-data a { border-bottom: 1px solid rgba(242, 101, 34, .4); justify-self: start; transition: color .2s; }
.contact-data a:hover { color: var(--orange-soft); }

.selector { padding: 36px; border: 1px solid var(--line-light); border-radius: 10px; background: rgba(255, 255, 255, .03); }
.selector-title { font-family: var(--serif); font-size: 24px; margin-bottom: 22px; }
.sel-opts { display: grid; gap: 8px; }
.sel {
  text-align: left;
  padding: 15px 18px;
  border-radius: 6px;
  border: 1px solid var(--line-light);
  background: transparent;
  font-size: 15.5px;
  transition: background .25s, border-color .25s, color .25s;
}
.sel:hover { border-color: var(--orange-soft); }
.sel.is-on { background: var(--ivory); color: var(--dark-900); border-color: var(--ivory); }
.sel-out { margin-top: 24px; min-height: 150px; }
.sel-hint { font-size: 14px; color: rgba(244, 240, 230, .5); }
.rec { animation: fade .45s var(--ease); }
.rec h3 { font-family: var(--serif); font-weight: 400; font-size: 24px; color: var(--orange-soft); }
.rec p { margin-top: 8px; color: rgba(244, 240, 230, .75); font-size: 15.5px; }
.rec .btn { margin-top: 20px; }

/* Footer */
.footer { background: var(--dark-900); color: rgba(244, 240, 230, .6); border-top: 1px solid var(--line-light); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding: 30px 24px; font-size: 14px; }
.footer .logo-word { color: var(--ivory); }

/* Barra móvil */
.mobile-bar {
  display: none;
  position: fixed;
  z-index: 90;
  left: 12px; right: 12px; bottom: 12px;
  padding: 8px 8px 8px 18px;
  border-radius: 8px;
  background: var(--dark-900);
  color: var(--ivory);
  box-shadow: 0 16px 40px -12px rgba(23, 25, 28, .6);
  align-items: center;
  justify-content: space-between;
  font-size: 15px;
  transform: translateY(150%);
  transition: transform .45s var(--ease);
}
.mobile-bar.show { transform: none; }
.mobile-bar b { padding: 11px 18px; border-radius: 5px; background: var(--orange-soft); color: var(--dark-900); font-weight: 500; font-size: 14.5px; }

/* ---------- Animaciones de entrada ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.intro { animation: intro 1s var(--ease) both; }
.hero h1.intro { animation-delay: .08s; }
.hero-sub.intro { animation-delay: .18s; }
.hero-cta.intro { animation-delay: .28s; }
.status.intro { animation-delay: .35s; }
@keyframes intro { from { opacity: 0; transform: translateY(24px); } }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .status { max-width: 560px; }
  .figures-grid { grid-template-columns: 1fr 1fr; }
  .fig:nth-child(3) { border-left: 0; }
  .fig:nth-child(n+3) { border-top: 1px solid var(--line); }
  .panel { grid-template-columns: 1fr; gap: 28px; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 44px; }
  .cases { grid-template-columns: 1fr 1fr; }
  .faq-grid, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .nav-inner { height: 64px; }
  .nav .btn-sm { padding: 9px 14px; font-size: 13.5px; }
  .hero { padding: 120px 0 80px; }
  .hero h1 { font-size: clamp(36px, 10vw, 48px); }
  .hero-sub { font-size: 17px; }
  .hero-cta .btn { flex: 1 1 100%; }
  .status { padding: 22px; }
  .status-month { font-size: 21px; }
  .status-list li { grid-template-columns: 1fr auto; gap: 2px 12px; }
  .st-area { grid-column: 1; }
  .st-task { grid-column: 1; grid-row: 2; }
  .st-ok { grid-row: 1 / 3; grid-column: 2; }
  .fig { padding: 28px 16px; }
  .fig b { font-size: 40px; }
  .section, .contact { padding: 90px 0; }
  .head { margin-bottom: 40px; }
  .compare { grid-template-columns: 1fr; }
  .col { padding: 30px 22px; }
  .tab { padding: 18px 12px; font-size: 20px; flex-direction: column; gap: 4px; }
  .panel { padding: 30px 20px; }
  .panel-intro { font-size: 22px; }
  .items { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .proj { grid-template-columns: 1fr; gap: 10px; padding: 28px 0; }
  .proj:hover { padding-left: 0; }
  .cases { grid-template-columns: 1fr; }
  .faq summary { font-size: 20px; }
  .contact-data li { grid-template-columns: 1fr; gap: 4px; }
  .selector { padding: 24px 18px; }
  .footer-inner { padding-bottom: 100px; }
  .mobile-bar { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .status-list li { opacity: 1; transform: none; }
  .meter i { width: 100%; }
  html { scroll-behavior: auto; }
}