/* ═══════════════════════════════════════════════════
   PORTAFOLIO OSVALDO BARRIOS
   Paleta: Negro · Amarillo · Blanco · Gris
   Extraída del logo OB
   ═══════════════════════════════════════════════════ */

:root {
  /* Fondos */
  --negro:     #0A0A0A;
  --carbon:    #111111;
  --panel:     #1A1A1A;
  --panel-lt:  #222222;
  --borde:     #2C2C2C;
  --borde-lt:  #383838;

  /* Marca */
  --amarillo:  #F5C518;   /* amarillo del logo OB */
  --amarillo-lt:#FFD93D;
  --amarillo-dk:#C9A000;
  --plata:     #C8C8C8;   /* plata del logo OB */
  --plata-lt:  #E8E8E8;

  /* Texto */
  --blanco:    #FFFFFF;
  --gris-lt:   #B0B0B0;
  --gris:      #707070;
  --gris-dk:   #444444;

  --f-display: 'Syne', sans-serif;
  --f-body:    'Inter', sans-serif;
  --r:         6px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--f-body);
  background: var(--negro);
  color: var(--gris-lt);
  overflow-x: hidden;
  line-height: 1.6;
}
img  { max-width: 100%; display: block; }
a    { text-decoration: none; color: inherit; }

/* ── NAV ─────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 2.5rem;
  background: rgba(10,10,10,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--borde);
  transition: border-color .3s;
}
.nav.scrolled { border-bottom-color: var(--amarillo-dk); }

.nav-name {
  font-family: var(--f-display);
  font-size: .92rem; font-weight: 800;
  letter-spacing: -.01em; color: var(--blanco);
}
.nav-name span { color: var(--amarillo); }

.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  font-size: .82rem; font-weight: 500;
  color: var(--gris); transition: color .2s;
}
.nav-links a:hover { color: var(--amarillo); }

.nav-cta {
  padding: .48rem 1.2rem;
  background: var(--amarillo); color: var(--negro);
  border-radius: 20px;
  font-size: .8rem; font-weight: 700;
  transition: background .2s, transform .15s;
}
.nav-cta:hover { background: var(--amarillo-lt); transform: translateY(-1px); }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none;
}
.hamburger span { width: 22px; height: 1.5px; background: var(--gris-lt); display: block; }

/* ── HERO ────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  background: var(--negro);
  display: flex; align-items: center;
  padding: 5.5rem 2.5rem 4rem;
  position: relative; overflow: hidden;
}

/* Resplandor de fondo sutil */
.hero::before {
  content: '';
  position: absolute; top: -20%; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 500px;
  background: radial-gradient(ellipse, rgba(245,197,24,.06) 0%, transparent 65%);
  pointer-events: none;
}

.hero-layout {
  max-width: 1100px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: center;
}

/* Logo */
.hero-logo-wrap {
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.hero-logo-wrap::after {
  content: '';
  position: absolute; inset: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,197,24,.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-logo-img {
  width: 100%; max-width: 420px;
  border-radius: 16px;
  position: relative; z-index: 1;
  filter: drop-shadow(0 0 40px rgba(245,197,24,.15));
}

/* Contenido del hero */
.hero-content { display: flex; flex-direction: column; gap: 1.4rem; }

.hero-meta {
  font-size: .72rem; font-weight: 600;
  color: var(--amarillo);
  letter-spacing: .12em; text-transform: uppercase;
  display: flex; align-items: center; gap: .8rem;
}
.hero-meta::before {
  content: ''; display: block;
  width: 20px; height: 2px;
  background: var(--amarillo); border-radius: 2px;
}

.hero-tagline {
  font-family: var(--f-display);
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 700; line-height: 1.25;
  color: var(--blanco); letter-spacing: -.02em;
}
.hero-tagline em {
  font-style: normal; color: var(--amarillo);
}

.hero-desc {
  font-size: .93rem; color: var(--gris);
  line-height: 1.75; max-width: 420px;
}

.hero-btns { display: flex; gap: .8rem; flex-wrap: wrap; }
.btn-p {
  padding: .82rem 1.8rem;
  background: var(--amarillo); color: var(--negro);
  border-radius: 20px; font-weight: 700; font-size: .88rem;
  transition: background .2s, transform .15s;
  box-shadow: 0 4px 20px rgba(245,197,24,.25);
}
.btn-p:hover { background: var(--amarillo-lt); transform: translateY(-1px); }
.btn-s {
  padding: .82rem 1.8rem;
  border: 1.5px solid var(--borde-lt); color: var(--gris-lt);
  border-radius: 20px; font-weight: 500; font-size: .88rem;
  transition: border-color .2s, color .2s;
}
.btn-s:hover { border-color: var(--amarillo); color: var(--amarillo); }

/* Stats del hero */
.hero-stats {
  display: flex; align-items: center; gap: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--borde);
}
.hstat { text-align: center; }
.hstat-n {
  font-family: var(--f-display);
  font-size: 1.5rem; font-weight: 800;
  color: var(--amarillo); display: block; line-height: 1;
}
.hstat-l {
  font-size: .68rem; color: var(--gris);
  text-transform: uppercase; letter-spacing: .06em;
  margin-top: .25rem; display: block;
}
.hstat-div { width: 1px; height: 36px; background: var(--borde-lt); }

/* ── DIFERENCIADOR ───────────────────────────────── */
.diferenciador {
  background: var(--carbon);
  padding: 5rem 2.5rem;
  border-top: 1px solid var(--borde);
}
.diff-inner { max-width: 1100px; margin: 0 auto; }
.diff-label {
  font-size: .7rem; font-weight: 700; letter-spacing: .14em;
  color: var(--amarillo); text-transform: uppercase;
  display: block; margin-bottom: 1.2rem;
}
.diff-title {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800; color: var(--blanco);
  line-height: 1.1; letter-spacing: -.03em; margin-bottom: 1rem;
}
.diff-title em { font-style: normal; color: var(--amarillo); }
.diff-text p {
  font-size: .93rem; color: var(--gris);
  line-height: 1.75; max-width: 520px; margin-bottom: 3rem;
}
.diff-etapas {
  display: flex; align-items: stretch;
  border: 1px solid var(--borde-lt);
  border-radius: 10px; overflow: hidden;
}
.diff-etapa {
  flex: 1; padding: 2rem 1.8rem;
  background: var(--panel);
  display: flex; gap: 1rem; align-items: flex-start;
  border-right: 1px solid var(--borde);
  transition: background .2s;
}
.diff-etapa:last-child { border-right: none; }
.diff-etapa:hover { background: var(--panel-lt); }
.diff-conector {
  display: flex; align-items: center; justify-content: center;
  padding: 0 .2rem;
  color: var(--amarillo); font-size: 1rem; font-weight: 700;
  background: var(--panel); border-right: 1px solid var(--borde);
}
.etapa-ico { font-size: 1.4rem; flex-shrink: 0; }
.etapa-body strong {
  font-family: var(--f-display);
  font-size: .92rem; font-weight: 700;
  color: var(--blanco); display: block; margin-bottom: .35rem;
}
.etapa-body p { font-size: .8rem; color: var(--gris); line-height: 1.6; }

/* ── SEC LABEL ───────────────────────────────────── */
.sec-label {
  font-size: .7rem; font-weight: 700; letter-spacing: .14em;
  color: var(--amarillo); text-transform: uppercase;
  margin-bottom: 2.5rem;
  display: flex; align-items: center; gap: 1rem;
}
.sec-label::after {
  content: ''; flex: 1; max-width: 48px;
  height: 2px; background: var(--amarillo); border-radius: 2px;
}

/* ── SERVICIOS ───────────────────────────────────── */
.servicios {
  padding: 6rem 2.5rem;
  background: var(--negro);
  border-top: 1px solid var(--borde);
}
.svc-list {
  display: grid; grid-template-columns: repeat(2,1fr); gap: 1.2rem;
}
.svc-item {
  background: var(--panel);
  border: 1px solid var(--borde);
  border-radius: 10px; padding: 2rem;
  transition: border-color .2s, box-shadow .2s;
}
.svc-item:hover {
  border-color: var(--amarillo-dk);
  box-shadow: 0 6px 28px rgba(245,197,24,.08);
}
.svc-num {
  font-family: var(--f-display);
  font-size: .68rem; font-weight: 800;
  color: var(--amarillo); letter-spacing: .08em;
  margin-bottom: 1rem; display: block;
}
.svc-body h3 {
  font-family: var(--f-display);
  font-size: 1.05rem; font-weight: 700;
  color: var(--blanco); margin-bottom: .5rem;
}
.svc-body p { font-size: .84rem; color: var(--gris); line-height: 1.7; }
.svc-tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1rem; }
.tag {
  font-size: .68rem; font-weight: 600;
  padding: .2rem .65rem; border-radius: 20px;
  background: rgba(245,197,24,.08);
  color: var(--amarillo-dk);
  border: 1px solid rgba(245,197,24,.2);
}

/* ── PROYECTOS / CASE STUDIES ────────────────────── */
.proyectos {
  padding: 6rem 2.5rem;
  background: var(--carbon);
  border-top: 1px solid var(--borde);
}
.proyectos > p {
  color: var(--gris); font-size: .93rem;
  line-height: 1.7; max-width: 560px; margin-bottom: 3rem;
}

.cases { display: flex; flex-direction: column; }
.case-item { border-top: 1px solid var(--borde); }
.case-item:last-child { border-bottom: 1px solid var(--borde); }
.case-item.open { background: var(--panel); }

.case-header {
  display: flex; align-items: center;
  justify-content: space-between; gap: 1.5rem;
  padding: 1.6rem 1rem; cursor: pointer;
}
.case-item.open .case-header { padding-bottom: .5rem; }
.case-header:hover .case-title { color: var(--amarillo); }

.case-header-left {
  display: flex; align-items: center; gap: 1.5rem; flex: 1;
}
.case-num {
  font-family: var(--f-display);
  font-size: .7rem; font-weight: 800;
  color: var(--borde-lt); flex-shrink: 0; letter-spacing: .05em;
  min-width: 28px;
}
.case-cat {
  font-size: .67rem; font-weight: 600; letter-spacing: .07em;
  color: var(--amarillo); margin-bottom: .2rem; text-transform: uppercase;
}
.case-title {
  font-family: var(--f-display);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 700; color: var(--blanco);
  transition: color .2s; line-height: 1.2;
}
.case-header-right {
  display: flex; align-items: center; gap: 1.2rem; flex-shrink: 0;
}
.case-url {
  font-size: .74rem; color: var(--gris);
  transition: color .2s; white-space: nowrap;
}
.case-url:hover { color: var(--amarillo); }
.case-toggle {
  width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px solid var(--borde-lt);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: var(--gris); flex-shrink: 0;
  transition: border-color .2s, color .2s, transform .3s, background .2s;
}
.case-item.open .case-toggle {
  transform: rotate(45deg);
  border-color: var(--amarillo); color: var(--amarillo);
  background: rgba(245,197,24,.08);
}

.case-body { display: none; padding: 1rem 1rem 2.2rem; }
.case-item.open .case-body { display: block; }

.case-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2rem; margin-bottom: 1.5rem;
}
.case-block { margin-bottom: 1.5rem; }
.case-block:last-child { margin-bottom: 0; }
.case-block-label {
  font-size: .67rem; font-weight: 700; letter-spacing: .08em;
  color: var(--gris-dk); text-transform: uppercase;
  margin-bottom: .7rem; padding-bottom: .5rem;
  border-bottom: 1px solid var(--borde);
}
.case-block p { font-size: .86rem; color: var(--gris); line-height: 1.75; }
.case-list { list-style: none; display: flex; flex-direction: column; gap: .4rem; }
.case-list li {
  font-size: .84rem; color: var(--gris);
  padding-left: 1rem; position: relative; line-height: 1.55;
}
.case-list li::before {
  content: '·'; position: absolute; left: 0;
  color: var(--amarillo); font-weight: 700;
}

.case-metrics {
  display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; margin-top: .6rem;
}
.metric {
  background: var(--carbon); border: 1px solid var(--borde);
  border-radius: var(--r); padding: .8rem 1rem;
  transition: border-color .2s;
}
.metric:hover { border-color: var(--amarillo-dk); }
.metric-n {
  font-family: var(--f-display);
  font-size: 1.15rem; font-weight: 800;
  color: var(--amarillo); display: block;
  line-height: 1; margin-bottom: .2rem;
}
.metric-l { font-size: .69rem; color: var(--gris); line-height: 1.4; }

.case-techs {
  display: flex; flex-wrap: wrap; gap: .4rem;
  padding-top: 1.2rem; border-top: 1px solid var(--borde);
}
.case-techs span {
  font-size: .68rem; font-weight: 600; padding: .22rem .75rem;
  border-radius: 20px;
  background: rgba(245,197,24,.07);
  border: 1px solid rgba(245,197,24,.2);
  color: var(--amarillo-dk);
}

/* ── PROCESO ─────────────────────────────────────── */
.proceso {
  padding: 6rem 2.5rem;
  background: var(--negro);
  border-top: 1px solid var(--borde);
}
.proceso-steps {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 1.2rem; margin-top: 2.5rem;
}
.proceso-step {
  background: var(--panel); border: 1px solid var(--borde);
  border-radius: 10px; padding: 1.8rem;
  transition: border-color .2s;
}
.proceso-step:hover { border-color: var(--amarillo-dk); }
.ps-num {
  font-family: var(--f-display);
  font-size: 2.8rem; font-weight: 800;
  color: var(--borde-lt); line-height: 1; margin-bottom: 1rem;
}
.proceso-step h4 {
  font-family: var(--f-display);
  font-size: .95rem; font-weight: 700;
  color: var(--blanco); margin-bottom: .5rem;
}
.proceso-step p { font-size: .82rem; color: var(--gris); line-height: 1.65; }

/* ── CONTACTO ────────────────────────────────────── */
.contacto {
  padding: 6rem 2.5rem;
  background: var(--carbon);
  border-top: 1px solid var(--borde);
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 5rem; align-items: start;
}
.contacto-left h2 {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800; line-height: 1.1;
  letter-spacing: -.03em; color: var(--blanco); margin-bottom: 1rem;
}
.contacto-left h2 em { font-style: normal; color: var(--amarillo); }
.contacto-left p {
  font-size: .93rem; color: var(--gris);
  line-height: 1.75; max-width: 380px;
}
.contacto-links {
  display: flex; flex-direction: column; gap: .6rem; margin-top: 2rem;
}
.contacto-links a {
  display: flex; align-items: center; gap: .8rem;
  font-size: .87rem; color: var(--gris); transition: color .2s;
}
.contacto-links a:hover { color: var(--amarillo); }
.contacto-links .ico {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--panel); border: 1px solid var(--borde);
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem; flex-shrink: 0;
  transition: border-color .2s;
}
.contacto-links a:hover .ico { border-color: var(--amarillo-dk); }

.form-field { margin-bottom: 1rem; }
.form-field label {
  display: block; font-size: .74rem; font-weight: 600;
  color: var(--gris); margin-bottom: .4rem; letter-spacing: .04em;
}
.form-field input,
.form-field textarea,
.form-field select {
  width: 100%; padding: .75rem 1rem;
  background: var(--panel); border: 1.5px solid var(--borde);
  border-radius: var(--r); font-family: var(--f-body);
  font-size: .88rem; color: var(--blanco);
  transition: border-color .2s, box-shadow .2s;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none; border-color: var(--amarillo);
  box-shadow: 0 0 0 3px rgba(245,197,24,.1);
}
.form-field textarea { resize: vertical; min-height: 110px; }
.form-field select { cursor: pointer; }
.form-field select option { background: var(--panel); color: var(--blanco); }
.btn-form {
  width: 100%; padding: .9rem;
  background: var(--amarillo); color: var(--negro);
  border: none; border-radius: 20px;
  font-family: var(--f-display);
  font-size: .9rem; font-weight: 700; cursor: pointer;
  transition: background .2s, transform .15s;
  box-shadow: 0 4px 20px rgba(245,197,24,.2);
}
.btn-form:hover { background: var(--amarillo-lt); transform: translateY(-1px); }
.btn-form:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.form-ok {
  margin-top: .7rem; padding: .7rem 1rem;
  background: rgba(245,197,24,.08);
  border: 1px solid rgba(245,197,24,.25);
  border-radius: var(--r);
  font-size: .83rem; color: var(--amarillo); display: none;
}
.form-ok.show { display: block; }

/* ── FOOTER ──────────────────────────────────────── */
footer {
  padding: 2rem 2.5rem;
  border-top: 1px solid var(--borde);
  background: var(--negro);
  display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.foot-name {
  font-family: var(--f-display);
  font-size: .9rem; font-weight: 800; color: var(--blanco);
}
.foot-name span { color: var(--amarillo); }
footer p { font-size: .78rem; color: var(--gris); }
.foot-links { display: flex; gap: 1.5rem; }
.foot-links a { font-size: .78rem; color: var(--gris); transition: color .2s; }
.foot-links a:hover { color: var(--amarillo); }

/* ── MOBILE MENU ─────────────────────────────────── */
.mob-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(10,10,10,.98);
  backdrop-filter: blur(12px);
  z-index: 200; flex-direction: column;
  align-items: center; justify-content: center; gap: 2.5rem;
}
.mob-overlay.open { display: flex; }
.mob-overlay a {
  font-family: var(--f-display);
  font-size: 2rem; font-weight: 800; color: var(--blanco);
  transition: color .2s;
}
.mob-overlay a:hover { color: var(--amarillo); }
.mob-close {
  position: absolute; top: 1.5rem; right: 2rem;
  background: none; border: none; color: var(--gris-lt);
  font-size: 1.8rem; cursor: pointer;
}

/* ── WA FLOAT ────────────────────────────────────── */
.wa-float {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 150;
  width: 52px; height: 52px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  transition: transform .2s;
}
.wa-float:hover { transform: scale(1.08); }

/* ── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-layout   { grid-template-columns: 1fr; gap: 3rem; text-align: center; }
  .hero-logo-wrap { order: -1; }
  .hero-logo-img  { max-width: 320px; margin: 0 auto; }
  .hero-meta      { justify-content: center; }
  .hero-btns      { justify-content: center; }
  .hero-stats     { justify-content: center; }
  .hero-desc      { margin: 0 auto; }
  .svc-list       { grid-template-columns: 1fr; }
  .proceso-steps  { grid-template-columns: repeat(2,1fr); }
  .contacto       { grid-template-columns: 1fr; gap: 3rem; }
  .case-grid      { grid-template-columns: 1fr; }
  .case-url       { display: none; }
}
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger            { display: flex; }
  .hero                 { padding: 5rem 1.5rem 3.5rem; }
  .diferenciador,
  .servicios, .proyectos,
  .proceso, .contacto   { padding: 4rem 1.5rem; }
  footer                { padding: 1.5rem; flex-direction: column; align-items: flex-start; }
  .proceso-steps        { grid-template-columns: 1fr; gap: 1rem; }
  .diff-etapas          { flex-direction: column; }
  .diff-conector        { display: none; }
  .diff-etapa           { border-right: none; border-bottom: 1px solid var(--borde); }
  .diff-etapa:last-child{ border-bottom: none; }
}
@media (max-width: 480px) {
  .hero-btns     { flex-direction: column; width: 100%; }
  .btn-p,.btn-s  { text-align: center; }
  .hero-stats    { flex-direction: column; gap: .8rem; }
  .hstat-div     { width: 36px; height: 1px; }
  .case-metrics  { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}