/* ===================================================================
   FRONTERA TACOS & TEQUILA — digital menu
   Paleta basada en el logo/branding real (magenta + dorado), no en
   colores inventados: PILAR 4 de la skill Web Ideas Factory.
   =================================================================== */

:root {
  --brand-primary:   #D6247A; /* magenta del logo */
  --brand-primary-dim: #A91C61;
  --brand-secondary: #C9992E; /* dorado "TACOS & TEQUILA" */
  --brand-accent:    #5B8A54; /* verde del ornamento floral, uso puntual */

  --surface-dark:    #1C1410;
  --surface-dark-2:  #241A14;
  --surface-light:   #FFF8EF;
  --surface-card:    #FFFFFF;

  --text-on-dark:    #FFF8EF;
  --text-on-dark-dim:#D8C9BB;
  --text-on-light:   #27201B;
  --text-on-light-dim:#6B5F55;

  --line-on-dark: rgba(255,248,239,0.18);
  --line-on-light: rgba(39,32,27,0.12);

  --font-display: 'Montserrat', sans-serif;
  --font-serif: 'Playfair Display', serif;

  --motion-fast: 220ms;
  --motion-medium: 480ms;
  --motion-slow: 900ms;
  --ease: cubic-bezier(.25,.8,.3,1);

  --radius: 18px;
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--surface-light);
  color: var(--text-on-light);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.eyebrow {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--brand-primary);
  margin: 0 0 6px;
}

/* sutil textura de grano para evitar que las superficies planas se vean maqueta */
.grano {
  position: fixed; inset: 0; pointer-events: none; z-index: 2;
  opacity: .035; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===================== NAV ===================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(18px, 4vw, 48px);
  background: transparent;
  transition: background var(--motion-medium) var(--ease), padding var(--motion-medium) var(--ease), box-shadow var(--motion-medium) var(--ease);
}
.nav.nav--solida {
  background: rgba(28,20,16,0.92);
  backdrop-filter: blur(10px);
  padding-top: 10px; padding-bottom: 10px;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
}
.nav__logo img { height: 34px; width: auto; transition: height var(--motion-medium) var(--ease); }
.nav.nav--solida .nav__logo img { height: 28px; }

.nav__links {
  display: flex; gap: 26px; align-items: center;
}
.nav__links a {
  font-size: .78rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-on-dark); opacity: .82;
  padding: 6px 2px; position: relative;
  transition: opacity var(--motion-fast) var(--ease);
}
.nav__links a::after {
  content: ''; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0;
  background: var(--brand-primary); transition: width var(--motion-fast) var(--ease);
}
.nav__links a:hover { opacity: 1; }
.nav__links a:hover::after { width: 100%; }

.nav__toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px;
}
.nav__toggle span { width: 24px; height: 2px; background: var(--text-on-dark); transition: transform var(--motion-fast) var(--ease), opacity var(--motion-fast) var(--ease); }

@media (max-width: 860px) {
  .nav__toggle { display: flex; }
  .nav__links {
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 340px); height: 100vh;
    background: var(--surface-dark); flex-direction: column; justify-content: center; align-items: flex-start;
    padding: 40px; gap: 20px;
    transform: translateX(100%); transition: transform var(--motion-medium) var(--ease);
  }
  .nav__links.abierto { transform: translateX(0); }
  .nav__links a { font-size: .95rem; }
}

/* ===================== HERO ===================== */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: center; justify-content: center;
  overflow: hidden; background: var(--surface-dark);
}
.hero__bg { position: absolute; inset: 0; }
.hero__bg-img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.12);
  animation: heroZoom 18s ease-out forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,13,10,.55) 0%, rgba(20,13,10,.72) 55%, rgba(20,13,10,.92) 100%);
}
.hero__content {
  position: relative; z-index: 1; text-align: center; color: var(--text-on-dark);
  display: flex; flex-direction: column; align-items: center; padding: 0 24px;
}
.hero__logo { width: min(640px, 80vw); margin-bottom: 18px; }
.hero__kicker {
  font-family: var(--font-display); font-weight: 600; letter-spacing: .32em; text-transform: uppercase;
  font-size: clamp(.78rem, 1.4vw, .95rem); color: var(--brand-secondary); margin: 0 0 14px;
}
.hero__lema {
  font-family: var(--font-serif); font-style: italic; font-weight: 500;
  font-size: clamp(1.3rem, 3vw, 1.9rem); margin: 0 0 10px;
}
.hero__meta {
  font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; opacity: .72; margin: 0 0 34px;
}
.hero__cta {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px; border-radius: 999px;
  background: var(--brand-primary); color: #fff;
  font-size: .82rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  box-shadow: 0 10px 30px rgba(214,36,122,.35);
  transition: transform var(--motion-fast) var(--ease), box-shadow var(--motion-fast) var(--ease), background var(--motion-fast) var(--ease);
}
.hero__cta:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(214,36,122,.45); background: var(--brand-primary-dim); }
.hero__cta svg { transition: transform var(--motion-fast) var(--ease); }
.hero__cta:hover svg { transform: translateY(2px); }

.hero__scrolldown {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  width: 24px; height: 38px; border: 2px solid rgba(255,248,239,.5); border-radius: 20px;
}
.hero__scrolldown span {
  position: absolute; top: 7px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 8px; border-radius: 2px; background: var(--text-on-dark);
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot { 0% { opacity: 1; top: 7px; } 70% { opacity: 0; top: 20px; } 100% { opacity: 0; top: 20px; } }

[data-reveal] { opacity: 0; transform: translateY(22px); }
.hero__content [data-reveal] { transition: opacity var(--motion-slow) var(--ease), transform var(--motion-slow) var(--ease); }
.hero.listo [data-reveal="logo"]   { transition-delay: .1s; }
.hero.listo [data-reveal="kicker"] { transition-delay: .32s; }
.hero.listo [data-reveal="lema"]   { transition-delay: .46s; }
.hero.listo [data-reveal="meta"]   { transition-delay: .6s; }
.hero.listo [data-reveal="cta"]    { transition-delay: .76s; }
.hero.listo [data-reveal] { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .hero__bg-img { animation: none; transform: none; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ===================== INDICE ===================== */
.indice { max-width: var(--maxw); margin: 0 auto; padding: 110px 24px 70px; }
.indice__encabezado { text-align: center; margin-bottom: 44px; }
.indice__encabezado h2 {
  font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 10px; letter-spacing: -.01em; font-weight: 800;
}
.indice__sub { font-size: .95rem; color: var(--text-on-light-dim); margin: 0; }

.indice__grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px;
  border: 1px solid var(--line-on-light); border-radius: var(--radius); overflow: hidden;
  background: var(--line-on-light);
}
@media (min-width: 720px) { .indice__grid { grid-template-columns: repeat(3, 1fr); } }

.indice__item {
  background: var(--surface-card); padding: 22px 20px; display: flex; align-items: center; gap: 14px;
  transition: background var(--motion-fast) var(--ease);
}
.indice__item:hover { background: #FFF1E0; }
.indice__num { font-weight: 800; color: var(--brand-primary); font-size: 1.05rem; min-width: 28px; }
.indice__nombre { font-weight: 600; font-size: .92rem; }

.indice__nota { text-align: center; font-size: .78rem; color: var(--text-on-light-dim); margin-top: 24px; }

/* ===================== SECCIONES DE CATEGORIA ===================== */
.seccion { padding: 90px 24px; max-width: var(--maxw); margin: 0 auto; }
.seccion--oscura { max-width: none; background: var(--surface-dark); color: var(--text-on-dark); }
.seccion--oscura .seccion__inner { max-width: var(--maxw); margin: 0 auto; }

.seccion__cab { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 40px; }
.seccion__titulo { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; margin: 2px 0 8px; letter-spacing: -.01em; }
.seccion__poetico { font-family: var(--font-serif); font-style: italic; font-size: 1.1rem; color: var(--text-on-light-dim); margin: 0; }
.seccion--oscura .seccion__poetico { color: var(--text-on-dark-dim); }
.seccion__num { font-size: .78rem; font-weight: 700; letter-spacing: .1em; color: var(--text-on-light-dim); }

.seccion__banner {
  position: relative; border-radius: var(--radius); overflow: hidden; margin-bottom: 44px;
  aspect-ratio: 21/8; max-height: 360px;
}
.seccion__banner img { width: 100%; height: 100%; object-fit: cover; }
.seccion__banner::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(0,0,0,.35), transparent 50%);
}

.grid-items { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px 40px; }
@media (max-width: 760px) { .grid-items { grid-template-columns: 1fr; gap: 26px; } }

.sub-bloque { margin-bottom: 36px; }
.sub-bloque__titulo {
  font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--brand-primary); margin: 0 0 16px; padding-bottom: 10px; border-bottom: 1px solid var(--line-on-light);
}
.seccion--oscura .sub-bloque__titulo { color: var(--brand-secondary); border-color: var(--line-on-dark); }

.item {
  opacity: 0; transform: translateY(16px);
  transition: opacity var(--motion-medium) var(--ease), transform var(--motion-medium) var(--ease);
}
.item.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .item { opacity: 1; transform: none; } }

.item__fila { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; }
.item__nombre { font-weight: 600; font-size: 1rem; }
.item__precio { font-weight: 700; color: var(--brand-primary); font-size: 1rem; white-space: nowrap; }
.seccion--oscura .item__precio { color: var(--brand-secondary); }
.item__desc { font-size: .85rem; color: var(--text-on-light-dim); margin: 5px 0 0; line-height: 1.5; }
.seccion--oscura .item__desc { color: var(--text-on-dark-dim); }

.item__variantes { margin-top: 8px; display: flex; flex-direction: column; gap: 4px; }
.item__variante { display: flex; justify-content: space-between; font-size: .85rem; opacity: .9; }
.item__variante .nombre { color: var(--text-on-light-dim); }
.seccion--oscura .item__variante .nombre { color: var(--text-on-dark-dim); }
.item__variante .precio { font-weight: 600; }

/* ===================== BAR: sub-tabs ===================== */
.bar-tabs {
  display: flex; flex-wrap: nowrap; gap: 10px; margin: 0 -24px 40px;
  position: sticky; top: 58px; z-index: 10; padding: 14px 24px;
  background: rgba(28,20,16,.97); backdrop-filter: blur(6px);
  overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none;
  box-shadow: 0 10px 16px -10px rgba(0,0,0,.4);
}
.bar-tabs::-webkit-scrollbar { display: none; }
.bar-tab {
  flex: 0 0 auto; white-space: nowrap;
  padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line-on-dark);
  font-size: .76rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  background: rgba(255,248,239,.04); color: var(--text-on-dark-dim); cursor: pointer;
  transition: all var(--motion-fast) var(--ease);
}
.bar-tab:hover { color: var(--text-on-dark); border-color: var(--text-on-dark-dim); }
.bar-tab.activo { background: var(--brand-primary); color: #fff; border-color: var(--brand-primary); }

.bar-panel { display: none; }
.bar-panel.activo { display: block; animation: fadeIn var(--motion-medium) var(--ease); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ===================== CIERRE ===================== */
.cierre {
  background: var(--surface-dark); color: var(--text-on-dark);
  text-align: center; padding: 110px 24px 80px;
}
.cierre__logo { width: 180px; margin: 0 auto 30px; }
.cierre h2 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; margin: 0 0 8px; }
.cierre__lema { font-family: var(--font-serif); font-style: italic; font-size: 1.3rem; color: var(--brand-secondary); margin: 0 0 40px; }
.cierre__info p { margin: 6px 0; font-size: .92rem; color: var(--text-on-dark-dim); }
.cierre__insta a { color: var(--brand-primary); font-weight: 600; }
.cierre__aviso { max-width: 520px; margin: 40px auto 0; font-size: .72rem; color: var(--text-on-dark-dim); opacity: .7; line-height: 1.6; }

/* ===================== VOLVER ARRIBA ===================== */
.volver-arriba {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  width: 44px; height: 44px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--brand-primary); color: #fff; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 20px rgba(0,0,0,.25);
  opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: opacity var(--motion-fast) var(--ease), transform var(--motion-fast) var(--ease);
}
.volver-arriba.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }