/* ============================================================
   Santiago Arraz — Portfolio
   Estética: editorial, aire, tipografía protagonista
   ============================================================ */

:root {
  --bg: #fafaf8;
  --bg-alt: #f1f1ec;
  --ink: #111110;
  --ink-soft: #55554f;
  --ink-faint: #8a8a82;
  --line: #e3e3dc;
  --accent: #2b59ff;
  --radius: 20px;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-serif: "Instrument Serif", Georgia, serif;
  --maxw: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

/* ============ Botones ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--dark { background: var(--ink); color: var(--bg); }
.btn--dark:hover { background: #2c2c29; }
.btn--ghost { border: 1px solid var(--line); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); }
.btn--sm { padding: 10px 20px; font-size: 14px; }
.btn--lg { padding: 18px 36px; font-size: 17px; }

/* ============ Nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav__logo { font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.nav__links { display: flex; gap: 28px; }
.nav__links a {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--ink); }

/* ============ Hero ============ */
.hero {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 140px 40px 100px;
  text-align: center;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}
.hero > *:not(.hero__canvas) { position: relative; z-index: 1; }
.hero__chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink-soft);
  background: #fff;
  margin-bottom: 36px;
}
.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.hero__title {
  font-size: clamp(48px, 8.5vw, 104px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 600;
  margin-bottom: 32px;
  min-height: 2.05em; /* reserva las dos líneas mientras se escribe */
}
.hero__sub {
  max-width: 560px;
  margin: 0 auto 44px;
  font-size: 19px;
  color: var(--ink-soft);
}
.hero__ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Caret de la animación de escritura */
.hero__caret {
  display: none; /* el JS lo activa; sin JS no aparece */
  width: 5px;
  height: 0.72em;
  margin-left: 0.08em;
  border-radius: 3px;
  background: #ec4899;
  animation: caret-color 9s linear infinite, caret-blink 1.1s steps(2, start) infinite;
}
.hero__caret.is-done {
  animation: none;
  opacity: 0;
  transition: opacity 0.6s ease;
}
@keyframes caret-color {
  0%, 100% { background: #ec4899; }
  33% { background: #8b5cf6; }
  66% { background: #2b59ff; }
}
@keyframes caret-blink {
  50% { opacity: 0; }
}

/* Mientras se escribe el título, el resto del hero espera */
.hero.is-typing .hero__sub,
.hero.is-typing .hero__ctas {
  opacity: 0 !important;
  transform: translateY(24px) !important;
}

/* ============ Marcas ============ */
.brands {
  padding: 70px 0 90px;
}
.brands__label {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  margin-bottom: 40px;
}
.brands__marquee {
  display: flex;
  overflow: hidden;
  user-select: none;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 12%, #000 88%, transparent);
}
.brands__track {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 72px;
  padding-right: 72px;
  animation: marquee 36s linear infinite;
}
.brands__marquee:hover .brands__track { animation-play-state: paused; }
.brands__track span {
  white-space: nowrap;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink-faint);
  transition: color 0.3s ease;
}
.brands__track span:hover { color: var(--ink); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}
@media (prefers-reduced-motion: reduce) {
  .brands__track { animation: none; }
}

/* ============ Manifiesto ============ */
.manifesto {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 110px 40px;
}
.manifesto__text {
  max-width: 880px;
  margin: 0 auto;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 500;
  text-align: center;
}

/* ============ Secciones ============ */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 130px 40px;
}
.section--alt {
  max-width: none;
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section--alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.section__head { max-width: 640px; margin-bottom: 72px; }
.section__eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  margin-bottom: 18px;
}
.section__title {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 20px;
}
.section__sub { font-size: 17px; color: var(--ink-soft); }

/* ============ Cómo pienso ============ */
.method {
  border-top: 1px solid var(--line);
}
.method__row {
  display: grid;
  grid-template-columns: 100px 1fr 1.5fr;
  gap: 48px;
  align-items: baseline;
  padding: 46px 12px;
  border-bottom: 1px solid var(--line);
  transition: background 0.35s ease, padding-left 0.35s ease;
}
.method__row:hover {
  background: color-mix(in srgb, #fff 60%, transparent);
  padding-left: 24px;
}
.method__num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  color: var(--accent);
}
.method__row h3 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.method__row p {
  font-size: 15.5px;
  color: var(--ink-soft);
  margin: 0;
}

/* ============ Casos ============ */
.cases { display: flex; flex-direction: column; gap: 24px; }
.case {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 44px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.case:hover {
  transform: translateY(-4px);
  border-color: var(--ink);
  box-shadow: 0 24px 48px -28px rgba(17, 17, 16, 0.22);
}
.case__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}
.tag {
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  color: var(--ink-soft);
}
.case__year { margin-left: auto; font-size: 13px; color: var(--ink-faint); }
.case__title {
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-weight: 600;
  max-width: 720px;
  margin-bottom: 30px;
}
.case__thinking {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  margin-bottom: 28px;
}
.case__thinking strong {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.case__thinking p { font-size: 14.5px; color: var(--ink-soft); }
.case__link {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}

/* ============ Oferta ============ */
.offer {
  background: var(--ink);
  color: var(--bg);
  border-radius: 28px;
  padding: 90px 40px;
  text-align: center;
}
.offer__eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #8a8a82;
  margin-bottom: 22px;
}
.offer__title {
  font-size: clamp(36px, 5.5vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 22px;
}
.offer__sub {
  font-size: 19px;
  color: #c9c9c1;
  max-width: 560px;
  margin: 0 auto 28px;
}
.offer__body {
  font-size: 16px;
  color: #a3a39b;
  max-width: 640px;
  margin: 0 auto 44px;
}
.btn--light {
  background: var(--bg);
  color: var(--ink);
  padding: 18px 36px;
  font-size: 16px;
}
.btn--light:hover { background: #fff; }
.offer__note {
  font-size: 13.5px;
  color: #77776f;
  max-width: 520px;
  margin: 36px auto 0;
}

/* ============ Sobre mí ============ */
.about {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  align-items: start;
}
.about__text p { color: var(--ink-soft); margin-bottom: 18px; max-width: 520px; }
.about__text .section__title { margin-bottom: 28px; }
.about__facts { display: flex; flex-direction: column; gap: 16px; }
.about__photo-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 5;
  background: var(--bg-alt);
  margin-bottom: 8px;
}
.about__photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(1);
  transition: filter 0.5s ease;
}
.about__photo-frame:hover img { filter: grayscale(0.6); }
/* Si la foto aún no existe, hueco elegante con iniciales */
.about__photo-frame.is-missing { position: relative; }
.about__photo-frame.is-missing img { display: none; }
.about__photo-frame.is-missing::after {
  content: "SA";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 64px;
  color: var(--ink-faint);
}
.fact {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 32px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.fact__num {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.fact__label { color: var(--ink-soft); font-size: 15px; }

/* ============ Contacto ============ */
.contact {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  text-align: center;
  padding: 140px 40px;
}
.contact__title {
  font-size: clamp(36px, 5.5vw, 64px);
  letter-spacing: -0.03em;
  line-height: 1.08;
  font-weight: 600;
  max-width: 800px;
  margin: 0 auto 20px;
}
.contact__sub { font-size: 18px; color: var(--ink-soft); margin-bottom: 44px; }

/* ============ Footer ============ */
.footer {
  background: var(--ink);
  color: var(--bg);
  padding: 90px 40px 30px;
  overflow: hidden;
}
.footer__links {
  max-width: var(--maxw);
  margin: 0 auto 100px;
  display: flex;
  gap: 120px;
}
.footer__links > div { display: flex; flex-direction: column; gap: 12px; }
.footer__col-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #77776f;
  margin-bottom: 6px;
}
.footer__links a {
  font-size: 15px;
  color: #c9c9c1;
  transition: color 0.2s;
}
.footer__links a:hover { color: var(--bg); }
.footer__wordmark {
  font-size: clamp(80px, 17vw, 260px);
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 0.9;
  text-align: center;
  white-space: nowrap;
  color: var(--bg);
  user-select: none;
}
.footer__legal {
  text-align: center;
  font-size: 13px;
  color: #77776f;
  margin-top: 40px;
}

/* ============ Página de caso de estudio ============ */
.case-hero {
  max-width: 820px;
  margin: 0 auto;
  padding: 110px 40px 70px;
}
.case-hero .case__meta { margin-bottom: 28px; }
.case-hero h1 {
  font-size: clamp(36px, 5.5vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  font-weight: 600;
  margin-bottom: 28px;
}
.case-hero__intro { font-size: 19px; color: var(--ink-soft); }

.case-summary {
  max-width: 820px;
  margin: 0 auto 40px;
  padding: 0 40px;
}
.case-summary__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.case-summary__item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.case-summary__item strong {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.case-summary__item span { font-size: 15px; }

.case-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 40px 120px;
}
.case-body h2 {
  font-size: 28px;
  letter-spacing: -0.02em;
  margin: 64px 0 18px;
}
.case-body h2 .case-num { color: var(--accent); margin-right: 10px; }
.case-body p { color: var(--ink-soft); margin-bottom: 18px; font-size: 16.5px; }
.case-body .pull {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 26px;
  line-height: 1.35;
  color: var(--ink);
  border-left: 3px solid var(--accent);
  padding: 8px 0 8px 28px;
  margin: 40px 0;
}
.case-body ul { margin: 0 0 18px 22px; color: var(--ink-soft); }
.case-body li { margin-bottom: 10px; font-size: 16.5px; }
.decision-box {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  margin: 36px 0;
}
.decision-box strong {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}
.decision-box p { margin-bottom: 0; color: var(--ink); }
.case-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 40px 100px;
}

/* ============ Animaciones de entrada ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ Responsive ============ */
@media (max-width: 860px) {
  .nav { padding: 14px 20px; }
  .nav__links { display: none; }
  .hero { padding: 90px 24px 70px; }
  .section { padding: 90px 24px; }
  .manifesto, .contact { padding: 90px 24px; }
  .about { grid-template-columns: 1fr; gap: 48px; }
  .method__row { grid-template-columns: 1fr; gap: 12px; padding: 36px 4px; }
  .method__row:hover { padding-left: 4px; }
  .case { padding: 30px 24px; }
  .footer__links { flex-direction: column; gap: 40px; }
  .case-summary__grid { grid-template-columns: 1fr; }
  .case-hero, .case-summary, .case-body, .case-nav { padding-left: 24px; padding-right: 24px; }
}