/* ==========================================================================
   Quipus — sistema visual
   Paleta: brandbook Quipus. Fondo cálido (no blanco puro).
   Tipografía: Chomsky (editorial/títulos) + Inter (cuerpo/UI).
   ========================================================================== */

:root {
  --ink: #222222;
  --purple: #7344ed;
  --purple-dark: #241a4a;
  --red: #d84747;
  --cyan: #0dc5c7;
  --yellow: #edc022;
  --grey-light: #e5e5e5;
  --bg: #f5f1e8;
  --bg-raised: #efe9db;
  --white: #ffffff;

  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --gradient-quipus: linear-gradient(120deg, var(--purple) 0%, var(--red) 38%, var(--cyan) 70%, var(--yellow) 100%);

  --container-w: 1180px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --space-6: 8rem;

  --radius: 18px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

@media (min-width: 700px) {
  .container {
    padding-inline: 2.5rem;
  }
}

/* ---------------------------------------------------------------- Type -- */

h1, h2, h3, .display {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 560;
  font-variation-settings: "SOFT" 0, "WONK" 0;
  line-height: 1.04;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
}

h1, .h1 {
  font-size: clamp(2.6rem, 6vw, 5.4rem);
}

h2, .h2 {
  font-size: clamp(2rem, 4.2vw, 3.4rem);
}

h3, .h3 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
}

p {
  margin: 0 0 1.2em;
  max-width: 62ch;
}

.eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--purple);
  margin-bottom: 1em;
  display: inline-block;
}

.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  max-width: 58ch;
  color: #3a3a3a;
}

/* -------------------------------------------------------------- Header -- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 241, 232, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(34, 34, 34, 0.08);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
}

.site-header__logo img {
  height: 46px;
  width: auto;
}

@media (max-width: 700px) {
  .site-header__logo img {
    height: 36px;
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-nav__links {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
  font-weight: 600;
  font-size: 0.95rem;
}

.site-nav__links a {
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
}

.site-nav__links a[aria-current="page"] {
  color: var(--purple);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  border-radius: 999px;
  padding: 0.7em 1.5em;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
  cursor: pointer;
  background: transparent;
  color: var(--ink);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.btn--primary:hover {
  background: var(--purple);
  border-color: var(--purple);
  color: var(--white);
}

.btn--ghost {
  border-color: rgba(34, 34, 34, 0.25);
}

/* --------------------------------------------------------------- Hero --- */

.hero {
  padding-block: var(--space-6) var(--space-5);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 70%;
  background: var(--gradient-quipus);
  opacity: 0.12;
  filter: blur(60px);
  z-index: 0;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero h1 {
  margin-bottom: 0.3em;
}

.hero h1 em {
  font-style: italic;
  font-weight: 480;
  background: var(--gradient-quipus);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ------------------------------------------------------------ Sections - */

section {
  padding-block: var(--space-5);
}

.section--tight {
  padding-block: var(--space-4);
}

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-4);
}

.divider {
  height: 4px;
  border: none;
  border-radius: 999px;
  background: var(--gradient-quipus);
  opacity: 0.85;
  margin: 0;
  width: 72px;
}

/* ------------------------------------------------------------ Grids ----- */

.grid {
  display: grid;
  gap: var(--space-3);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-3);
  border: 1px solid rgba(34, 34, 34, 0.08);
}

.card--gradient-edge {
  border-top: 4px solid transparent;
  border-image: var(--gradient-quipus) 1;
}

/* ---------------------------------------- Steps (decisiones / proceso) -- */
/* Un solo patrón visual: número grande + línea de color + título + texto.
   Se usa tanto en "Cuatro decisiones" como en "Estrategia / Creatividad /
   Ejecución" para que ambas secciones lean como el mismo sistema. */

.steps {
  display: grid;
  gap: var(--space-4) var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.step {
  position: relative;
  padding-top: var(--space-3);
}

.step::before {
  content: "";
  display: block;
  height: 4px;
  width: 48px;
  border-radius: 999px;
  margin-bottom: var(--space-2);
  background: var(--purple);
}

.steps--4 .step:nth-child(1)::before { background: var(--purple); }
.steps--4 .step:nth-child(2)::before { background: var(--red); }
.steps--4 .step:nth-child(3)::before { background: var(--cyan); }
.steps--4 .step:nth-child(4)::before { background: var(--yellow); }

.steps--3 .step:nth-child(1)::before { background: var(--purple); }
.steps--3 .step:nth-child(2)::before { background: var(--red); }
.steps--3 .step:nth-child(3)::before { background: var(--cyan); }

.step__num {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--purple);
  display: block;
  margin-bottom: 0.5em;
}

.section--dark-purple .step__num,
.section--dark .step__num {
  color: var(--yellow);
}

.section--purple .step__num {
  color: var(--white);
}

/* El primer trazo de color (morado) se vuelve invisible sobre un fondo
   morado igual de saturado — en esa variante lo forzamos a blanco. */
.section--purple .steps--4 .step:nth-child(1)::before {
  background: var(--white);
}

.step__q {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
}

/* --------------------------------------------------------------- Dark ---- */

.section--dark {
  background: var(--ink);
  color: var(--bg);
}

.section--dark-purple {
  background: var(--purple-dark);
  color: var(--bg);
}

.section--purple {
  background: var(--purple);
  color: var(--white);
}

.section--dark .eyebrow,
.section--dark-purple .eyebrow {
  color: var(--yellow);
}

.section--purple .eyebrow {
  color: var(--white);
}

.section--dark p,
.section--dark-purple p {
  color: rgba(245, 241, 232, 0.82);
}

.section--purple p {
  color: rgba(255, 255, 255, 0.88);
}

.section--dark h2,
.section--dark-purple h2,
.section--dark h3,
.section--dark-purple h3,
.section--purple h2,
.section--purple h3 {
  color: var(--white);
}

.section--dark .btn--primary,
.section--dark-purple .btn--primary,
.section--purple .btn--primary {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--bg);
}

.section--dark .btn--primary:hover,
.section--dark-purple .btn--primary:hover,
.section--purple .btn--primary:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

.section--purple .divider {
  opacity: 1;
  background: var(--white);
}

.section--dark .divider,
.section--dark-purple .divider {
  opacity: 1;
}

.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee-scroll 38s linear infinite;
}

.marquee:hover .marquee__track,
.marquee:focus-within .marquee__track {
  animation-play-state: paused;
}

.marquee__item {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 0.55em 1.3em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.05rem;
  color: rgba(245, 241, 232, 0.78);
  text-decoration: none;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}

.marquee__item:hover,
.marquee__item:focus-visible {
  color: var(--white);
  background: rgba(245, 241, 232, 0.12);
}

.marquee__item--static {
  cursor: default;
  opacity: 0.6;
}

.marquee__item--static:hover {
  color: rgba(245, 241, 232, 0.78);
  background: none;
}

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee__track {
    animation: none;
    flex-wrap: wrap;
    overflow-x: auto;
  }
}

/* --------------------------------------------------------------- Fotos -- */

.photo {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/5;
  position: relative;
}

.photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.06) saturate(1.05);
}

.photo--wide {
  aspect-ratio: 16/9;
}

/* ------------------------------------------------------------- Galería -- */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-2);
}

.gallery__item {
  display: block;
  padding: 0;
  border: none;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 1/1;
  cursor: zoom-in;
  background: var(--bg-raised);
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.3) contrast(1.05) saturate(1.05);
  transition: transform 0.35s ease;
}

.gallery__item:hover img,
.gallery__item:focus-visible img {
  transform: scale(1.06);
}

.lightbox[hidden] {
  display: none;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(17, 15, 15, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3);
}

.lightbox img {
  max-width: min(90vw, 1000px);
  max-height: 86vh;
  border-radius: var(--radius);
  object-fit: contain;
}

.lightbox__close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(245, 241, 232, 0.4);
  background: transparent;
  color: var(--bg);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox__close:hover {
  background: rgba(245, 241, 232, 0.12);
}

/* Velo/duotono morado de marca sobre la fotografía de backstage, para que
   la iluminación de escenario (rosas, rojos, ámbar) no rompa la paleta. */
.photo--duotone::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(115, 68, 237, 0.55), rgba(36, 26, 74, 0.32));
  mix-blend-mode: color;
  pointer-events: none;
}

/* ---------------------------------------------------------------- CTA --- */

.cta-band {
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius);
  padding: var(--space-5) var(--space-4);
  text-align: center;
}

.cta-band h2 {
  color: var(--white);
}

/* -------------------------------------------------------------- Footer -- */

.site-footer {
  border-top: 1px solid rgba(34, 34, 34, 0.1);
  padding-block: var(--space-4);
  font-size: 0.9rem;
  color: #55524a;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  justify-content: space-between;
}

.site-footer__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-footer__social {
  display: flex;
  gap: 0.5rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(34, 34, 34, 0.15);
  color: var(--ink);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.social-btn:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

/* ---------------------------------------------------------------- Form -- */

.form {
  display: grid;
  gap: var(--space-2);
  max-width: 560px;
}

.form label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4em;
}

.form input,
.form textarea {
  width: 100%;
  border: 1px solid rgba(34, 34, 34, 0.25);
  border-radius: 10px;
  padding: 0.8em 1em;
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--white);
  color: var(--ink);
}

.form textarea {
  min-height: 140px;
  resize: vertical;
}

.form input:focus,
.form textarea:focus {
  outline: 2px solid var(--purple);
  outline-offset: 1px;
}

/* -------------------------------------------------------------- Badges -- */

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35em 0.75em;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink);
}

/* --------------------------------------------------------- Recursos ----- */

.recurso-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid rgba(34, 34, 34, 0.08);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 0.6em;
}

.recurso-card h3 {
  margin-bottom: 0.2em;
}

.recurso-card__meta {
  font-size: 0.85rem;
  color: #6b6858;
}

/* ---------------------------------------------------------- Utilities --- */

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.max-w-none { max-width: none; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (max-width: 700px) {
  .site-header__inner {
    flex-wrap: wrap;
    row-gap: 0.75rem;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: var(--space-2);
  }

  .site-nav__links {
    gap: var(--space-2);
    font-size: 0.88rem;
  }

  .btn {
    padding: 0.6em 1.1em;
    font-size: 0.88rem;
  }
}