/* ============================================================
   PlusEstudio — Agencia Creativa Digital
   Design system: dark bold / magenta de marca (#e6067e)
   Logo sobre fondo oscuro: partes negras → blanco
   ============================================================ */

:root {
  /* Color tokens */
  --bg: #0e0d0f;
  --bg-alt: #141316;
  --surface: #1a191d;
  --surface-2: #211f24;
  --border: #2e2c32;
  --text: #f5f4f6;
  --text-muted: #a6a3aa;
  --accent: #e6067e;        /* magenta de marca */
  --accent-hover: #ff2f96;
  --accent-soft: #ff4fa8;   /* variante clara para texto pequeño sobre oscuro */
  --on-accent: #ffffff;

  /* Type */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  /* Spacing scale (8px) */
  --s-1: 8px;  --s-2: 16px; --s-3: 24px;
  --s-4: 32px; --s-6: 48px; --s-8: 64px; --s-12: 96px;

  --radius: 16px;
  --header-h: 76px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(100% - 48px, 1200px);
  margin-inline: auto;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--accent);
  color: var(--on-accent);
}
.btn--primary:hover { background: var(--accent-hover); }

.btn--ghost {
  border: 1.5px solid var(--border);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-soft); }

/* ============ Header ============ */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(14, 13, 15, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.header.is-scrolled {
  background: rgba(14, 13, 15, 0.92);
  border-bottom-color: var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  width: min(100% - 48px, 1200px);
}

/* Logotipo PlusEstudio
   Usa el archivo original img/logo-blanco.png (versión para fondo oscuro:
   lo negro del logo en blanco). Si el archivo no existe todavía, se muestra
   una recreación tipográfica como respaldo (.logo--text). */
.logo { display: flex; align-items: center; }

.logo__img {
  height: 48px;
  width: auto;
}

.logo__fallback {
  display: none;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1;
  white-space: nowrap;
  font-family: "Montserrat", var(--font-display), sans-serif;
}
.logo--text .logo__fallback { display: flex; }

.logo__line1 {
  display: flex;
  align-items: flex-end;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 0.9;
  color: var(--text);
}
.logo__s {
  color: var(--accent);
  font-size: 1.45em;
  font-weight: 800;
  line-height: 0.72;
  margin-left: -1px;
}
.logo__line2 {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.36em;
  color: transparent;
  -webkit-text-stroke: 1px var(--text);
  margin-top: 4px;
}
.logo__cl {
  color: var(--accent-soft);
  -webkit-text-stroke: 0;
  letter-spacing: 0.02em;
}
@supports not (-webkit-text-stroke: 1px black) {
  .logo__line2 { color: var(--text); }
}

.nav { display: flex; align-items: center; gap: var(--s-4); }
.nav__list { display: flex; gap: var(--s-3); }

.nav__link {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  color: var(--text-muted);
  padding: 10px 6px;
  position: relative;
  transition: color 0.2s ease;
}
.nav__link:hover { color: var(--text); }
.nav__link.is-active { color: var(--text); }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 6px; right: 6px; bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav__cta { min-height: 42px; padding: 8px 22px; font-size: 15px; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 12px;
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero / Slider ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
}

.slider {
  position: relative;
  width: 100%;
  display: grid;
  overflow: hidden;
}

/* Todos los slides ocupan la misma celda a ancho completo;
   solo cambia la opacidad — nunca se corta en pantallas anchas */
.slide {
  grid-area: 1 / 1;
  position: relative;
  width: 100%;
  min-height: 100svh;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}
.slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.slide__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
/* Fondos generativos por slide */
.slide__bg--1 {
  background:
    radial-gradient(ellipse 60% 50% at 78% 22%, rgba(230, 6, 126, 0.18), transparent 60%),
    radial-gradient(ellipse 45% 45% at 12% 85%, rgba(120, 90, 255, 0.12), transparent 60%),
    var(--bg);
}
.slide__bg--2 {
  background:
    radial-gradient(ellipse 55% 50% at 20% 25%, rgba(60, 170, 255, 0.14), transparent 60%),
    radial-gradient(ellipse 45% 45% at 85% 80%, rgba(230, 6, 126, 0.12), transparent 60%),
    var(--bg);
}
.slide__bg--3 {
  background:
    radial-gradient(ellipse 55% 50% at 80% 75%, rgba(255, 80, 130, 0.13), transparent 60%),
    radial-gradient(ellipse 45% 45% at 15% 20%, rgba(230, 6, 126, 0.12), transparent 60%),
    var(--bg);
}
/* Foto de fondo difuminada por slide */
.slide__photo {
  position: absolute;
  inset: -28px; /* margen extra para que el blur no muestre bordes */
  background-size: cover;
  background-position: center;
  filter: blur(7px) brightness(0.6) saturate(0.85);
  opacity: 0.55;
}
.slide__photo--1 { background-image: url("../img/slides/slide-1.jpg"); }
.slide__photo--2 { background-image: url("../img/slides/slide-2.jpg"); }
.slide__photo--3 { background-image: url("../img/slides/slide-3.jpg"); }

/* Degradado de legibilidad + grid sutil, por encima de la foto */
.slide__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(90deg, rgba(14,13,15,0.92) 0%, rgba(14,13,15,0.6) 48%, rgba(14,13,15,0.25) 100%),
    linear-gradient(180deg, rgba(14,13,15,0.6) 0%, rgba(14,13,15,0) 28%, rgba(14,13,15,0) 62%, var(--bg) 100%);
}

.slide__content {
  padding-top: calc(var(--header-h) + var(--s-6));
  padding-bottom: var(--s-12);
}

.slide__kicker {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: var(--s-3);
}

.slide__title {
  font-family: var(--font-display);
  font-size: clamp(42px, 7.5vw, 92px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin-bottom: var(--s-3);
  max-width: 14ch;
}
.accent { color: var(--accent); }

.slide__text {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--text-muted);
  max-width: 54ch;
  margin-bottom: var(--s-4);
}

.slide__actions { display: flex; flex-wrap: wrap; gap: var(--s-2); }

/* Controles del slider */
.slider__controls {
  position: absolute;
  bottom: var(--s-4);
  left: 0; right: 0;
  display: flex;
  align-items: center;
  gap: var(--s-2);
  z-index: 5;
}

.slider__arrow {
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.slider__arrow:hover { border-color: var(--accent); color: var(--accent-soft); }

.slider__dots { display: flex; gap: 10px; }
.slider__dot {
  width: 32px; height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
}
.slider__dot::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--border);
  transition: background 0.25s ease, width 0.25s ease;
}
.slider__dot.is-active::before {
  width: 28px;
  background: var(--accent);
}

/* ============ Secciones ============ */
.section { padding-block: var(--s-12); }
.section--alt { background: var(--bg-alt); }

.section__kicker {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: var(--s-2);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.2vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--s-3);
  max-width: 24ch;
}

.section__lead {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 58ch;
  margin-bottom: var(--s-2);
}
.section__lead strong { color: var(--text); }

/* ---- Agencia ---- */
.agencia__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--s-8);
  align-items: center;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-2);
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-4) var(--s-3);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat__num {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.stat__label { color: var(--text-muted); font-size: 14px; }

/* ---- Servicios ---- */
.cards {
  margin-top: var(--s-6);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-2);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-4);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(230, 6, 126, 0.5);
}

.card__icon {
  width: 56px; height: 56px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: rgba(230, 6, 126, 0.14);
  color: var(--accent);
  margin-bottom: var(--s-3);
}

.card__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  margin-bottom: var(--s-1);
}
.card__text { color: var(--text-muted); font-size: 15px; }

.card--cta {
  background: linear-gradient(140deg, rgba(230, 6, 126, 0.16), rgba(230, 6, 126, 0.04));
  border-color: rgba(230, 6, 126, 0.4);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--s-1);
}
.card--cta .btn { margin-top: var(--s-2); }

/* ---- Clientes ---- */
.clientes__grid {
  margin-top: var(--s-6);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-2);
}

/* Tarjeta negra: logo en gris, color original al pasar el mouse */
.cliente {
  display: grid;
  place-items: center;
  min-height: 130px;
  padding: var(--s-3);
  background: #0a0a0c;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.cliente:hover {
  border-color: rgba(230, 6, 126, 0.5);
  transform: translateY(-3px);
}
.cliente img {
  max-height: 72px;
  max-width: min(220px, 80%);
  width: auto;
  object-fit: contain;
  filter: grayscale(1) brightness(1.05);
  opacity: 0.6;
  transition: filter 0.3s ease, opacity 0.3s ease;
}
.cliente:hover img,
.cliente:focus-within img {
  filter: none;
  opacity: 1;
}
/* Nombre visible solo cuando no hay logo */
.cliente__nombre {
  display: none;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.8vw, 22px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-muted);
  transition: color 0.3s ease;
}
.cliente--text .cliente__nombre { display: block; }
.cliente--text:hover .cliente__nombre { color: var(--text); }

/* ---- Contacto ---- */
.contacto__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--s-8);
  align-items: start;
}

.contacto__data {
  margin-top: var(--s-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.contacto__data li {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-muted);
}
.contacto__data svg { color: var(--accent); flex-shrink: 0; }
.contacto__data a:hover { color: var(--accent-soft); }
.contacto__data strong { color: var(--text); }

/* ---- Formulario ---- */
.form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
}

.form__group { display: flex; flex-direction: column; gap: 8px; }

.form__group label {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
}
.req { color: var(--accent-soft); }

.form__group input,
.form__group select,
.form__group textarea {
  font: inherit;
  font-size: 16px;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  min-height: 48px;
  width: 100%;
  transition: border-color 0.2s ease;
}
.form__group textarea { resize: vertical; min-height: 120px; }

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form__group.has-error input,
.form__group.has-error textarea {
  border-color: #ff5c5c;
}

.form__error {
  display: none;
  color: #ff8080;
  font-size: 13px;
}
.form__group.has-error .form__error { display: block; }

/* honeypot oculto */
.form__hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px; height: 1px;
  overflow: hidden;
}

.form__submit { position: relative; }
.form__submit[disabled] { opacity: 0.6; cursor: wait; }

.form__spinner {
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: var(--on-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.form__status { font-size: 15px; min-height: 1.4em; }
.form__status.ok { color: var(--accent-soft); }
.form__status.error { color: #ff8080; }

/* ============ Footer ============ */
.footer {
  border-top: 1px solid var(--border);
  padding-block: var(--s-6);
}
.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-1);
  text-align: center;
}
.logo--footer .logo__img { height: 56px; }
.logo--footer .logo__fallback { align-items: center; }
.footer__tagline { color: var(--text-muted); font-size: 15px; }
.footer__copy { color: var(--text-muted); font-size: 13px; opacity: 0.7; }

/* ============ Reveal on scroll ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .agencia__grid, .contacto__grid { grid-template-columns: 1fr; gap: var(--s-6); }
}

@media (max-width: 768px) {
  .section { padding-block: var(--s-8); }

  .nav-toggle { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--s-2);
    background: rgba(14, 13, 15, 0.98);
    border-bottom: 1px solid var(--border);
    padding: var(--s-3) 24px var(--s-4);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }
  .nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }
  .nav__list { flex-direction: column; gap: 4px; }
  .nav__link { display: block; padding: 12px 4px; font-size: 17px; }
  .nav__link.is-active::after { display: none; }
  .nav__cta { align-self: flex-start; }

  .cards { grid-template-columns: 1fr; }
  .clientes__grid { grid-template-columns: repeat(2, 1fr); }
  .form__row { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }

  .slider__controls { justify-content: center; }
}

@media (max-width: 400px) {
  .stats { grid-template-columns: 1fr; }
  .container { width: min(100% - 32px, 1200px); }
}