/* ==========================================================
   Mohan Gas — estilos
   Paleta tomada del logo
   ========================================================== */
:root {
  --carbon: #252B29;
  --carbon-2: #1B201E;
  --oliva: #61613F;
  --dorado: #A78557;
  --dorado-claro: #C9A877;
  --crema: #FAF7F0;
  --crema-2: #F2ECDF;
  --blanco: #FFFFFF;
  --texto: #3C4340;
  --texto-suave: #6B716D;

  --font-titulos: "Cormorant Garamond", Georgia, serif;
  --font-texto: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --radio: 18px;
  --sombra: 0 18px 40px -20px rgba(37, 43, 41, .35);
}

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font-texto);
  color: var(--texto);
  background: var(--crema);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: var(--font-titulos); color: var(--carbon); font-weight: 600; }

a { color: var(--dorado); }
a:hover { color: var(--oliva); }

/* ---------- Botones ---------- */
.btn { border-radius: 999px; font-weight: 500; letter-spacing: .02em; transition: all .3s ease; }
.btn-lg { padding: .85rem 2rem; font-size: 1rem; }

.btn-gold { background: var(--dorado); color: var(--blanco); border: 1px solid var(--dorado); }
.btn-gold:hover, .btn-gold:focus { background: var(--carbon); border-color: var(--carbon); color: var(--blanco); transform: translateY(-2px); }

.btn-dark-brand { background: var(--carbon); color: var(--crema); border: 1px solid var(--carbon); }
.btn-dark-brand:hover, .btn-dark-brand:focus { background: var(--dorado); border-color: var(--dorado); color: var(--blanco); transform: translateY(-2px); }

.btn-outline-brand { border: 1px solid var(--carbon); color: var(--carbon); background: transparent; }
.btn-outline-brand:hover, .btn-outline-brand:focus { background: var(--carbon); color: var(--crema); transform: translateY(-2px); }

#contacto .btn-gold:hover { background: var(--crema); border-color: var(--crema); color: var(--carbon); }

/* ---------- Navbar ---------- */
#navbar {
  padding: 1.1rem 0;
  transition: padding .35s ease, background-color .35s ease, box-shadow .35s ease;
}
#navbar .navbar-brand img { transition: height .35s ease; width: auto; }
#navbar.scrolled {
  padding: .5rem 0;
  background: rgba(250, 247, 240, .94);
  backdrop-filter: blur(8px);
  box-shadow: 0 6px 24px -14px rgba(37, 43, 41, .45);
}
#navbar.scrolled .navbar-brand img { height: 50px; }

.navbar .nav-link {
  color: var(--carbon);
  font-weight: 500;
  padding: .5rem 1rem !important;
  position: relative;
}
.navbar .nav-link::after {
  content: "";
  position: absolute; left: 1rem; right: 1rem; bottom: .25rem;
  height: 2px; background: var(--dorado);
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s ease;
}
.navbar .nav-link:hover, .navbar .nav-link.active { color: var(--carbon); }
.navbar .nav-link:hover::after, .navbar .nav-link.active::after { transform: scaleX(1); }

.navbar-toggler { border: 0; font-size: 2rem; color: var(--carbon); padding: 0 .25rem; }
.navbar-toggler:focus { box-shadow: none; }

@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--crema);
    margin-top: .75rem;
    padding: 1rem;
    border-radius: var(--radio);
    box-shadow: var(--sombra);
  }
  .navbar .nav-link::after { display: none; }
  .navbar-nav .btn { margin-top: .5rem; }
}

/* ---------- Elementos comunes ---------- */
.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--dorado);
  margin-bottom: 1rem;
}
.eyebrow-light { color: var(--dorado-claro); }

.section { padding: 6rem 0; position: relative; }
.section-white { background: var(--blanco); }
.section-cream { background: var(--crema); }

.section-head { margin-bottom: 3.5rem; }
.section-title { font-size: clamp(2.1rem, 4vw, 3rem); line-height: 1.15; margin-bottom: 0; }
.text-cream { color: var(--crema) !important; }

.divider {
  width: 70px; height: 3px; margin-top: 1.25rem;
  background: linear-gradient(90deg, var(--oliva), var(--dorado));
  border-radius: 3px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 9rem 0 8rem;
  background:
    radial-gradient(ellipse at 85% 30%, rgba(167, 133, 87, .18), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(97, 97, 63, .14), transparent 50%),
    var(--crema);
  overflow: hidden;
}
.display-title {
  font-size: clamp(2.8rem, 6.5vw, 5rem);
  line-height: 1.05;
  font-weight: 700;
  margin-bottom: 1.5rem;
}
.display-title em { font-style: italic; color: var(--dorado); font-weight: 600; }

/* Palabra rotativa del hero: todas las palabras ocupan la misma celda,
   así la altura no salta al cambiar de una a otra */
.rotador {
  display: grid;
  font-size: min(1em, 10.5vw);
  white-space: nowrap;
  overflow: hidden;
  padding-bottom: .12em; /* espacio para los descendentes de la cursiva */
}
.rotador > span {
  grid-area: 1 / 1;
  opacity: 0;
  transform: translateY(60%);
  transition: opacity .6s ease, transform .6s cubic-bezier(.22, 1, .36, 1);
}
.rotador > span.activa { opacity: 1; transform: translateY(0); }
.rotador > span.saliendo { opacity: 0; transform: translateY(-60%); }
.hero .lead { font-size: 1.15rem; color: var(--texto-suave); max-width: 560px; }

.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; aspect-ratio: 1; }
.hero-circle {
  position: absolute; inset: 6%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--blanco), var(--crema-2));
  border: 1px solid rgba(167, 133, 87, .35);
  box-shadow: var(--sombra);
}
.hero-circle::before {
  content: ""; position: absolute; inset: -18px;
  border-radius: 50%;
  border: 1px dashed rgba(167, 133, 87, .45);
  animation: girar 60s linear infinite;
}
.hero-symbol { position: relative; width: 72%; height: auto; animation: flotar 6s ease-in-out infinite; }

@keyframes girar { to { transform: rotate(360deg); } }
@keyframes flotar {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- Ondas ---------- */
.wave { position: absolute; left: 0; width: 100%; height: 90px; display: block; }
.wave-bottom { bottom: -1px; }
.wave-top { top: -1px; }
.wave-fill-white { fill: var(--blanco); }
.wave-fill-cream { fill: var(--crema); }
.wave-line { fill: none; stroke: var(--dorado); stroke-width: 2; opacity: .7; vector-effect: non-scaling-stroke; }

/* ---------- Servicios ---------- */
.service-card {
  background: var(--crema);
  border: 1px solid var(--crema-2);
  border-radius: var(--radio);
  padding: 2.75rem 2.25rem;
  position: relative;
  overflow: hidden;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.service-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%;
  background: linear-gradient(90deg, var(--oliva), var(--dorado));
  transform: scaleX(0); transform-origin: left; transition: transform .45s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--sombra); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-card h3 { font-size: 1.9rem; margin: 1.5rem 0 .75rem; }
.service-card p { color: var(--texto-suave); margin: 0; }

.service-icon {
  width: 64px; height: 64px; border-radius: 16px;
  display: grid; place-items: center;
  font-size: 1.75rem; color: var(--crema);
  background: linear-gradient(135deg, var(--carbon), var(--oliva));
  transition: transform .35s ease;
}
.service-card:hover .service-icon { transform: rotate(-6deg) scale(1.06); }

/* ---------- Nosotros ---------- */
.feature {
  background: var(--blanco);
  border-radius: var(--radio);
  padding: 1.75rem;
  height: 100%;
  border-left: 3px solid var(--dorado);
  transition: transform .3s ease, box-shadow .3s ease;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--sombra); }
.feature i { font-size: 1.75rem; color: var(--oliva); }
.feature h4 { font-size: 1.5rem; margin: .75rem 0 .35rem; }
.feature p { color: var(--texto-suave); margin: 0; font-size: .95rem; }

/* ---------- CTA / Contacto ---------- */
.cta {
  position: relative;
  padding: 10rem 0 7rem;
  background:
    radial-gradient(ellipse at 20% 100%, rgba(97, 97, 63, .45), transparent 60%),
    radial-gradient(ellipse at 90% 40%, rgba(167, 133, 87, .22), transparent 55%),
    var(--carbon);
  color: var(--crema);
  overflow: hidden;
}
.cta-text { color: rgba(250, 247, 240, .75); font-size: 1.1rem; max-width: 560px; margin: 1.25rem auto 0; }
.cta .btn-lg { word-break: break-all; }

/* ---------- Footer ---------- */
.footer {
  background: var(--carbon-2);
  color: rgba(250, 247, 240, .7);
  padding: 3rem 0;
  border-top: 1px solid rgba(167, 133, 87, .25);
  font-size: .95rem;
}
.footer img { width: auto; max-width: 100%; }
.footer a { color: var(--dorado-claro); text-decoration: none; }
.footer a:hover { color: var(--crema); }

/* ---------- Responsive ---------- */
@media (max-width: 575.98px) {
  .section { padding: 4.5rem 0; }
  .hero { padding: 8rem 0 7rem; min-height: auto; }
  .service-card { padding: 2.25rem 1.75rem; }
  #navbar .navbar-brand img { height: 46px; }
  .cta { padding: 8rem 0 5rem; }
  .wave { height: 60px; }
}

/* ---------- Accesibilidad: menos movimiento ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-symbol, .hero-circle::before { animation: none; }
  *, *::before, *::after { transition: none !important; }
}