/* ============================================================
   KIS Creative Agency — Hoja de estilos principal
   Basada en la Guía de Marca (tokens de la sección 2)
   ============================================================ */

:root {
  /* Colores de marca */
  --color-primary: #5A57EE;   /* Violeta Spark */
  --color-accent:  #C9FF3D;   /* Verde Xinfinity */
  --color-dark:    #0D0D12;   /* Negro Carbón */
  --color-light:   #F5F5FA;   /* Blanco Niebla */
  --color-lavender:#A8A6F5;   /* Lavanda */
  --color-gray:    #9A9AA5;   /* Gris Medio */
  --color-surface: #16161E;   /* Tarjetas modo oscuro (sección 5) */
  --color-surface-2:#1E1E29;
  --color-border:  rgba(168, 166, 245, 0.14);

  /* Texto */
  --text-on-primary: #F5F5FA;
  --text-on-dark:    #F5F5FA;
  --text-on-accent:  #0D0D12; /* el verde lleva texto oscuro */

  /* Tipografía */
  --font-display: 'Archivo Black', 'Arial Black', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;

  /* Escala tipográfica */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.5rem;
  --text-hero: clamp(2.6rem, 7vw, 4.75rem);

  /* Forma y espaciado */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --spacing-unit: 8px;
  --container: 1160px;

  /* Efectos */
  --shadow-soft: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 60px -12px rgba(90, 87, 238, 0.55);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--color-dark);
  color: var(--text-on-dark);
  line-height: 1.65;
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- Utilidades ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; }

.eyebrow {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.accent { color: var(--color-accent); }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 999;
  background: var(--color-accent); color: var(--text-on-accent);
  padding: 10px 18px; border-radius: var(--radius-sm); font-weight: 600;
  transition: top var(--transition);
}
.skip-link:focus { top: 12px; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 700; font-size: var(--text-base);
  padding: 14px 26px; border-radius: var(--radius-sm);
  transition: transform var(--transition), background var(--transition), color var(--transition), box-shadow var(--transition);
  will-change: transform;
}
.btn:active { transform: translateY(1px); }
.btn--sm { padding: 10px 18px; font-size: var(--text-sm); }
.btn--block { display: flex; width: 100%; }

.btn--primary { background: var(--color-accent); color: var(--text-on-accent); }
.btn--primary:hover { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-glow); }

.btn--ghost {
  background: transparent; color: var(--color-light);
  border: 2px solid var(--color-primary);
}
.btn--ghost:hover { background: var(--color-primary); color: #fff; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13, 13, 18, 0.72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.is-scrolled { border-bottom-color: var(--color-border); background: rgba(13, 13, 18, 0.9); }

.header__inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }

.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--color-light); }
.brand__mark { color: var(--color-light); width: 62px; }
.brand__mark .kis-mark { width: 100%; height: auto; }
.brand__text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  line-height: 1.05;
  letter-spacing: 0.14em;
  padding-left: 12px;
  border-left: 2px solid var(--color-border);
}
.brand__paren { color: var(--color-accent); }

/* Nav */
.nav__menu { display: flex; align-items: center; gap: 28px; }
.nav__menu a { font-size: var(--text-sm); font-weight: 500; transition: color var(--transition); }
.nav__menu a:not(.btn) { color: var(--color-light); }
.nav__menu a:not(.btn):hover { color: var(--color-accent); }

.nav__toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--color-light); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }

/* Overlay del menú móvil */
.nav__overlay {
  position: fixed; inset: 0; z-index: 95;
  background: rgba(8, 8, 12, 0.6);
  -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.nav__overlay.is-active { opacity: 1; pointer-events: auto; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(70px, 12vw, 140px) 0 90px; overflow: hidden; }
.hero__glow {
  position: absolute; inset: -30% 0 auto 0; height: 620px; z-index: 0;
  background:
    radial-gradient(60% 60% at 30% 20%, rgba(90, 87, 238, 0.45), transparent 70%),
    radial-gradient(50% 50% at 80% 10%, rgba(201, 255, 61, 0.14), transparent 70%);
  filter: blur(10px); pointer-events: none;
}
.hero__inner { position: relative; z-index: 1; max-width: 860px; }
.hero__title { font-family: var(--font-display); font-size: var(--text-hero); line-height: 1.02; letter-spacing: -0.01em; margin-bottom: 24px; }
.hero__lead { font-size: var(--text-lg); color: var(--color-lavender); max-width: 620px; margin-bottom: 34px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 64px; }

.hero__stats { display: flex; flex-wrap: wrap; gap: 48px; }
.stat__num { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-light); }
.stat__label { font-size: var(--text-sm); color: var(--color-gray); }

/* ---------- Marquee ---------- */
.marquee { border-block: 1px solid var(--color-border); padding: 20px 0; overflow: hidden; background: var(--color-surface); }
.marquee__track { display: flex; align-items: center; gap: 34px; width: max-content; animation: scroll-x 34s linear infinite; }
.marquee__track span { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-light); white-space: nowrap; letter-spacing: 0.04em; }
.marquee__track span[aria-hidden] { color: var(--color-accent); font-size: var(--text-sm); }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- Secciones ---------- */
.section { padding: clamp(48px, 7vw, 80px) 0; }
.section--alt { background: var(--color-surface); }

.section__head { max-width: 700px; margin-bottom: 56px; }
.section__title { font-family: var(--font-display); font-size: clamp(1.9rem, 4vw, var(--text-2xl)); line-height: 1.1; margin-bottom: 16px; }
.section__sub { color: var(--color-lavender); font-size: var(--text-lg); }

/* ---------- Grids ---------- */
.grid { display: grid; gap: 24px; }
.grid--services { grid-template-columns: repeat(3, 1fr); }
.grid--plans { grid-template-columns: repeat(3, 1fr); align-items: start; }

/* ---------- Card base ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

/* ---------- Servicio ---------- */
.service:hover { transform: translateY(-6px); border-color: var(--color-primary); box-shadow: var(--shadow-soft); }
.service__icon {
  width: 52px; height: 52px; display: grid; place-items: center;
  border-radius: var(--radius-sm); background: rgba(90, 87, 238, 0.16);
  color: var(--color-accent); margin-bottom: 20px;
}
.service__icon svg { width: 26px; height: 26px; }
.service__title { font-family: var(--font-display); font-size: var(--text-lg); margin-bottom: 12px; }
.service p { color: var(--color-gray); margin-bottom: 18px; }
.service__list li { position: relative; padding-left: 22px; font-size: var(--text-sm); color: var(--color-lavender); margin-bottom: 8px; }
.service__list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 10px; height: 10px; background: var(--color-accent); border-radius: 2px; transform: rotate(45deg); }

/* ---------- Planes ---------- */
.plan { display: flex; flex-direction: column; position: relative; }
.plan--featured { border-color: var(--color-primary); background: linear-gradient(180deg, rgba(90, 87, 238, 0.18), var(--color-surface)); box-shadow: var(--shadow-glow); }
.plan__badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--color-accent); color: var(--text-on-accent);
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 6px 14px; border-radius: 999px; white-space: nowrap;
}
.plan__name { font-family: var(--font-display); font-size: var(--text-xl); margin-bottom: 8px; }
.plan__desc { color: var(--color-gray); font-size: var(--text-sm); min-height: 44px; margin-bottom: 18px; }
.plan__price { font-family: var(--font-display); font-size: var(--text-2xl); margin-bottom: 24px; }
.plan__currency { font-size: var(--text-lg); vertical-align: super; margin-right: 2px; }
.plan__period { font-family: var(--font-body); font-size: var(--text-base); color: var(--color-gray); font-weight: 500; }
.plan__features { flex: 1; margin-bottom: 28px; }
.plan__features li { position: relative; padding-left: 28px; margin-bottom: 12px; color: var(--color-lavender); font-size: var(--text-sm); }
.plan__features li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--color-accent); font-weight: 700; }
.plans__note { text-align: center; margin-top: 36px; color: var(--color-gray); }

/* ---------- Proceso ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step { padding: 28px; border-radius: var(--radius-md); border: 1px solid var(--color-border); background: var(--color-surface); transition: border-color var(--transition), transform var(--transition); }
.step:hover { border-color: var(--color-primary); transform: translateY(-4px); }
.step__num { font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-primary); display: block; margin-bottom: 14px; }
.step__title { font-size: var(--text-lg); margin-bottom: 10px; }
.step p { color: var(--color-gray); font-size: var(--text-sm); }

/* ---------- Nosotros ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about__content p { color: var(--color-lavender); margin: 16px 0; }
.about__content .btn { margin-top: 16px; }
.about__values { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.value { padding: 24px; border-radius: var(--radius-md); background: var(--color-surface-2); border: 1px solid var(--color-border); }
.value h3 { font-size: var(--text-base); color: var(--color-accent); margin-bottom: 8px; }
.value p { font-size: var(--text-sm); color: var(--color-gray); }

/* ---------- Contacto ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact__info { margin-top: 28px; display: grid; gap: 14px; }
.contact__info li { display: flex; align-items: center; gap: 12px; color: var(--color-lavender); }
.contact__info a:hover { color: var(--color-accent); }
.contact__ico { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: rgba(90, 87, 238, 0.18); color: var(--color-accent); }

.contact__form { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-size: var(--text-sm); font-weight: 500; color: var(--color-light); }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: var(--text-base);
  background: var(--color-dark); color: var(--color-light);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  padding: 12px 14px; transition: border-color var(--transition), box-shadow var(--transition);
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(90, 87, 238, 0.25);
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A8A6F5' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 18px; padding-right: 42px; }
.field__error { font-size: var(--text-xs); color: #ff8a8a; min-height: 14px; }
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: #ff8a8a; }
.form__status { font-size: var(--text-sm); text-align: center; min-height: 20px; }
.form__status.is-success { color: var(--color-accent); }
.form__status.is-error { color: #ff8a8a; }

/* ---------- Focus visible global ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--color-accent); outline-offset: 2px; border-radius: 4px;
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--color-border); padding-top: 56px; background: var(--color-surface); }
.footer__inner { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; align-items: center; padding-bottom: 40px; }
.brand__mark--footer { width: 84px; color: var(--color-light); display: block; margin-bottom: 14px; }
.footer__tagline { color: var(--color-gray); font-size: var(--text-sm); }
.footer__nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer__nav a { font-size: var(--text-sm); color: var(--color-lavender); transition: color var(--transition); }
.footer__nav a:hover { color: var(--color-accent); }
.footer__social { display: flex; gap: 14px; justify-content: flex-end; }
.social { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--color-border); color: var(--color-light); transition: background var(--transition), color var(--transition), transform var(--transition); }
.social svg { width: 20px; height: 20px; }
.social:hover { background: var(--color-accent); color: var(--text-on-accent); transform: translateY(-3px); }
.footer__bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 22px 24px; border-top: 1px solid var(--color-border); color: var(--color-gray); font-size: var(--text-xs); }

/* ---------- Volver arriba ---------- */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--color-primary); color: #fff; font-size: 20px;
  box-shadow: var(--shadow-soft); opacity: 0; transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
}
.to-top.is-visible { opacity: 1; transform: translateY(0); }
.to-top:hover { background: var(--color-accent); color: var(--text-on-accent); }

/* ---------- Animaciones de aparición ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 960px) {
  .grid--services { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .about, .contact { grid-template-columns: 1fr; gap: 36px; }
  .footer__inner { grid-template-columns: 1fr; text-align: left; }
  .footer__social { justify-content: flex-start; }
}

@media (max-width: 760px) {
  .nav__toggle { display: flex; position: relative; z-index: 120; }
  .nav__menu {
    position: fixed; top: 0; right: 0; z-index: 110;
    height: 100vh; height: 100dvh; width: min(74vw, 288px);
    flex-direction: column; align-items: stretch; gap: 4px;
    background: var(--color-dark); padding: 96px 22px 40px;
    transform: translateX(100%); transition: transform var(--transition);
    border-left: 1px solid var(--color-border);
    box-shadow: -20px 0 60px -20px rgba(0, 0, 0, 0.7);
    overflow-y: auto;
  }
  .nav__menu.is-open { transform: translateX(0); }
  .nav__menu li { width: 100%; }
  .nav__menu a:not(.btn) {
    display: block; width: 100%;
    font-size: var(--text-lg); padding: 14px 10px; border-radius: var(--radius-sm);
  }
  .nav__menu a:not(.btn):hover,
  .nav__menu a:not(.btn):active { background: var(--color-surface); color: var(--color-accent); }
  .nav__menu .btn { width: 100%; text-align: center; margin-top: 10px; }
  body.nav-open { overflow: hidden; }
  .nav__toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__toggle.is-active span:nth-child(2) { opacity: 0; }
  .nav__toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (max-width: 560px) {
  .grid--services, .grid--plans, .steps { grid-template-columns: 1fr; }
  .about__values { grid-template-columns: 1fr; }
  .hero__stats { gap: 28px; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .plan--featured { transform: none; }
}

/* ---------- Preferencia de movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}