/* ============================================================
   PIANO DI GIO — Estilos
   Paleta: #FF0000 · #000000 · #FFFFFF
   Tipografía: Cascadia Mono
   ============================================================ */

:root {
  --red: #FF0000;
  --black: #000000;
  --white: #FFFFFF;
  --gray: #0a0a0a;
  --gray-light: #f4f4f4;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Cascadia Mono', 'Courier New', monospace;
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.accent { color: var(--red); }

/* ---------- Tipografía jerarquía ---------- */
h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; }
.lead { font-size: 1.35rem; font-weight: 600; line-height: 1.4; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.9rem 1.8rem;
  border: 3px solid var(--black);
  background: var(--white);
  color: var(--black);
  cursor: pointer;
  position: relative;
  transition: transform 0.15s var(--ease), background 0.15s, color 0.15s;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}
.btn span { position: relative; z-index: 1; }
.btn-primary { background: var(--red); color: var(--white); border-color: var(--red); }
.btn-primary:hover { transform: translate(-3px, -3px); background: var(--black); border-color: var(--red); }
.btn-ghost { background: transparent; color: var(--black); border-color: var(--red); }
.btn-ghost:hover { transform: translate(-3px, -3px); background: var(--black); color: var(--white); border-color: var(--red); }
.btn--full { width: 100%; }

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--black);
  transition: background 0.3s, color 0.3s;
}
.nav-logo {
  display: block;
  width: 126px;
  line-height: 0;
}
.brand-logo {
  width: 100%;
  height: auto;
}
.brand-logo--dark { display: none; }
.nav.scrolled .brand-logo--light { display: none; }
.nav.scrolled .brand-logo--dark { display: block; }
.nav-links {
  display: flex;
  gap: 2rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav-links a {
  position: relative;
  padding: 0.3rem 0;
  transition: color 0.15s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--red);
  transition: width 0.2s var(--ease);
}
.nav-links a:hover { color: var(--red); }
.nav-links a:hover::after { width: 100%; }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-burger span {
  width: 26px; height: 3px;
  background: var(--black);
  transition: 0.2s;
}

/* Nav scrolled (sobre secciones negras) */
.nav.scrolled { background: rgba(0,0,0,0.92); color: var(--white); border-bottom-color: var(--red); }
.nav.scrolled .nav-logo { color: var(--white); }
.nav.scrolled .nav-links a { color: var(--white); }
.nav.scrolled .nav-burger span { background: var(--white); }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
  background: var(--white);
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-diag {
  position: absolute;
  width: 120%;
  height: 100%;
}
.hero-diag--red {
  background: var(--red);
  top: -10%; right: -40%;
  transform: rotate(-18deg);
  height: 50%;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 20% 100%);
}
.hero-diag--white {
  background: var(--black);
  bottom: -10%; left: -30%;
  transform: rotate(-18deg);
  height: 45%;
  clip-path: polygon(0 0, 100% 0, 80% 100%, 0 100%);
}
.hero-block {
  position: absolute;
  background: var(--black);
}
.hero-block--1 { top: 0; right: 0; width: 180px; height: 180px; background: var(--black); clip-path: polygon(0 0, 100% 0, 100% 100%); }
.hero-block--2 { bottom: 10%; right: 8%; width: 90px; height: 90px; background: var(--red); clip-path: polygon(0 0, 100% 0, 100% 100%, 20% 100%); }
.hero-block--3 { top: 22%; left: 55%; width: 50px; height: 50px; background: var(--red); transform: rotate(45deg); }
.hero-line {
  position: absolute;
  top: 0; left: 45%;
  width: 3px; height: 100%;
  background: var(--red);
  transform: rotate(-18deg);
  transform-origin: top;
  opacity: 0.7;
}

.hero-content { position: relative; z-index: 2; max-width: 760px; }
.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  padding: 0.4rem 0.8rem;
  background: var(--black);
  color: var(--white);
  display: inline-block;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}
.hero-title {
  font-size: clamp(3.5rem, 12vw, 9rem);
  line-height: 0.88;
  letter-spacing: -0.03em;
  margin-bottom: 0.8rem;
}
.hero-title-accent { color: var(--red); }
.hero-tagline {
  font-size: clamp(1.3rem, 4vw, 2.2rem);
  font-weight: 600;
  margin-bottom: 2.5rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Teclado decorativo */
.hero-keyboard {
  position: absolute;
  bottom: 0; right: 0;
  z-index: 1;
  opacity: 0.92;
}
.keys {
  position: relative;
  display: flex;
  height: 180px;
  width: min(690px, 58vw);
}
.key {
  appearance: none;
  cursor: pointer;
  flex: 1;
  border: 2px solid var(--black);
  transition: transform 0.08s var(--ease), background 0.08s, box-shadow 0.08s;
}
.key--w { background: var(--white); position: relative; }
.key--w span {
  position: absolute;
  bottom: 0.6rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: inherit;
  font-size: 0.6rem;
  font-weight: 700;
  color: #777;
  pointer-events: none;
}
.key--b {
  position: absolute;
  top: 0;
  width: 4.667%;
  height: 110px;
  background: var(--black);
  border-color: var(--black);
  z-index: 2;
}
.key--r {
  position: absolute;
  top: 0;
  width: 4.667%;
  height: 110px;
  background: var(--red);
  border-color: var(--red);
  z-index: 3;
}
.key:hover { filter: brightness(0.82); }
.key--w:hover { background: #e7e7e7; }
.key.key--active { transform: translateY(7px); box-shadow: inset 0 8px 0 rgba(0,0,0,0.2); }
.key--b.key--active { background: #333; }
.key--r.key--active { background: #b90000; }
.key:focus-visible { outline: 3px solid var(--red); outline-offset: -3px; }
.piano-help {
  margin: 0 0.15rem 0.35rem;
  color: var(--red);
  font-family: 'Cascadia Mono', 'Courier New', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: right;
  -webkit-text-stroke: 1px var(--black);
  paint-order: stroke fill;
}

/* ---------- MARQUEE ---------- */
.marquee {
  background: var(--red);
  color: var(--white);
  overflow: hidden;
  white-space: nowrap;
  padding: 0.7rem 0;
  border-top: 3px solid var(--black);
  border-bottom: 3px solid var(--black);
}
.marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 1.5rem;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: marquee 28s linear infinite;
}
.marquee-star { font-size: 0.7rem; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- SECTIONS ---------- */
.section {
  padding: 6rem 2rem;
  position: relative;
  overflow: hidden;
}
.section--white { background: var(--white); color: var(--black); }
.section--black { background: var(--black); color: var(--white); }
.section--contact { background: var(--black); color: var(--white); }

.section-head {
  max-width: 1200px;
  margin: 0 auto 3.5rem;
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
}
.section-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--red);
  border: 2px solid var(--red);
  padding: 0.25rem 0.6rem;
  letter-spacing: 0.05em;
}
.section-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  text-transform: uppercase;
  letter-spacing: -0.01em;
}
.section-title--white { color: var(--white); }
.section-note {
  max-width: 1200px;
  margin: 2.5rem auto 0;
  font-size: 0.8rem;
  opacity: 0.6;
  font-style: italic;
}

/* ---------- 01 · ¿QUÉ ES? ---------- */
.que-es-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: start;
}
.que-es-main .lead { border-left: 4px solid var(--red); padding-left: 1.5rem; }
.que-es-side p { font-size: 1rem; margin-bottom: 1.5rem; }
.red-line { width: 60px; height: 4px; background: var(--red); }

/* ---------- 02 · EL PROYECTO (cards) ---------- */
.cards {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.card {
  background: var(--white);
  color: var(--black);
  padding: 2.5rem 2rem;
  border: 3px solid var(--white);
  position: relative;
  transition: transform 0.2s var(--ease), border-color 0.2s;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.card--tilt-l { transform: rotate(-1.5deg); }
.card--tilt-r { transform: rotate(1.5deg); }
.card:hover { transform: rotate(0) scale(1.02); border-color: var(--red); }
.card-num {
  position: absolute;
  top: 1rem; right: 1.2rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--red);
}
.card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}
.card p { font-size: 0.95rem; }

/* ---------- 03 · IDENTIDAD DE MARCA ---------- */
.marca-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.marca-text .lead { margin-bottom: 1.5rem; }
.palette {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.swatch {
  flex: 1;
  min-width: 120px;
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  border: 2px solid var(--black);
  transition: transform 0.2s var(--ease);
}
.swatch:hover { transform: translateY(-6px); }
.swatch-name { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.swatch-hex { font-size: 0.85rem; font-weight: 400; }
.swatch--red { background: var(--red); color: var(--white); }
.swatch--black { background: var(--black); color: var(--white); }
.swatch--white { background: var(--white); color: var(--black); }

/* ---------- 04 · LOGO ---------- */
.logo-desc {
  max-width: 1200px;
  margin: 0 auto 2.5rem;
  font-size: 1.1rem;
}
.logo-panels {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.logo-panel {
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--black);
  transition: transform 0.2s var(--ease);
}
.logo-panel:hover { transform: scale(1.01); }
.logo-panel--white { background: var(--white); }
.logo-panel--black { background: var(--black); border-color: var(--white); }
.logo-panel-image {
  width: min(78%, 390px);
  height: auto;
}
.isotipo {
  max-width: 1200px;
  margin: 2.5rem auto 0;
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.isotipo-variants {
  display: flex;
  gap: 1.25rem;
}
.isotipo-box {
  position: relative;
  width: 160px;
  height: 160px;
  background: var(--white);
  border: 3px solid var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.isotipo-box--dark { background: var(--black); border-color: var(--black); }
.isotipo-box img {
  width: 78%;
  height: 78%;
  object-fit: contain;
}
.isotipo-box figcaption {
  position: absolute;
  bottom: -1.5rem;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--red);
  text-transform: uppercase;
  white-space: nowrap;
}
.isotipo-desc { font-size: 1rem; max-width: 500px; }

/* ---------- 05 · ¿PARA QUIÉN ES? ---------- */
.publico-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.publico-big {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.publico-edad {
  font-size: clamp(4rem, 14vw, 9rem);
  font-weight: 700;
  line-height: 0.9;
  color: var(--red);
}
.publico-edad-label { font-size: 1.5rem; font-weight: 700; letter-spacing: 0.1em; }
.publico-pais {
  margin-top: 0.8rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  background: var(--red);
  color: var(--white);
  display: inline-block;
  width: fit-content;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}
.publico-list { display: flex; flex-direction: column; gap: 1rem; }
.publico-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.2rem 1.5rem;
  background: var(--gray);
  border-left: 4px solid var(--red);
  font-size: 1.05rem;
  font-weight: 600;
  transition: transform 0.2s var(--ease), background 0.2s;
}
.publico-item:hover { transform: translateX(8px); background: #1a1a1a; }
.publico-item-num { color: var(--red); font-weight: 700; font-size: 0.9rem; }

/* ---------- 06 · CARACTERÍSTICAS ---------- */
.producto-intro {
  max-width: 1200px;
  margin: 0 auto 2.5rem;
  font-size: 1rem;
  opacity: 0.7;
}
.features {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature {
  padding: 2rem 1.5rem;
  border: 3px solid var(--black);
  background: var(--white);
  transition: transform 0.2s var(--ease), background 0.2s, color 0.2s;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}
.feature:hover {
  transform: translate(-4px, -4px);
  background: var(--black);
  color: var(--white);
}
.feature-icon {
  display: block;
  font-size: 2rem;
  color: var(--red);
  margin-bottom: 1rem;
}
.feature h3 { font-size: 1.05rem; margin-bottom: 0.5rem; text-transform: uppercase; }
.feature p { font-size: 0.9rem; }

/* ---------- 07 · CONTACTO ---------- */
.contact-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 2rem; }
.contact-item { display: flex; flex-direction: column; gap: 0.3rem; }
.contact-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--red);
  text-transform: uppercase;
}
.contact-value { font-size: 1.05rem; font-weight: 600; }

.contact-form { display: flex; flex-direction: column; gap: 0.8rem; }
.contact-form label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}
.contact-form label:first-of-type { margin-top: 0; }
.contact-form input,
.contact-form textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.8rem 1rem;
  background: var(--gray);
  border: 2px solid #333;
  color: var(--white);
  outline: none;
  transition: border-color 0.2s;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: #666; }
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--red); }
.contact-form .btn { margin-top: 1rem; border-color: var(--red); }
.form-note {
  font-size: 0.78rem;
  opacity: 0.5;
  margin-top: 0.8rem;
  font-style: italic;
}
.form-note.form-note--success { color: #7dff8d; opacity: 1; }
.form-note.form-note--error { color: var(--red); opacity: 1; }
.contact-form .btn[disabled] { cursor: wait; opacity: 0.65; }
.form-honeypot { position: absolute; left: -9999px; }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--black);
  color: var(--white);
  padding: 3rem 2rem 2rem;
  border-top: 4px solid var(--red);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 2rem;
}
.footer-logo { width: min(220px, 55vw); height: auto; }
.footer-tag { font-size: 1rem; font-weight: 600; opacity: 0.8; margin-top: -1.275rem; }
.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2rem;
}
.footer-links a { transition: color 0.15s; }
.footer-links a:hover { color: var(--red); }
.footer-leyenda {
  font-size: 0.75rem;
  opacity: 0.4;
  padding-top: 1.5rem;
  border-top: 1px solid #222;
}

/* ---------- EASTER EGG ---------- */
.easter-egg {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: var(--black);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.easter-egg--active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.easter-egg--fade {
  opacity: 0;
  transition: opacity 1s linear;
}
.easter-egg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- REVEAL ANIMATIONS ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .que-es-grid,
  .marca-grid,
  .logo-panels,
  .publico-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .features { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr; }
  .card--tilt-l, .card--tilt-r { transform: rotate(0); }
  .hero-keyboard { opacity: 0.72; }
}

@media (max-width: 600px) {
  .section { padding: 4rem 1.2rem; }
  .hero { padding: 5rem 1.2rem 3rem; }
  .nav { padding: 0.8rem 1.2rem; }
  .nav-links {
    position: fixed;
    top: 56px; left: 0; right: 0;
    flex-direction: column;
    background: var(--white);
    border-bottom: 3px solid var(--black);
    padding: 1.5rem;
    gap: 1.2rem;
    transform: translateY(-150%);
    transition: transform 0.3s var(--ease);
  }
  .nav-links.open { transform: translateY(0); }
  .nav.scrolled .nav-links { background: var(--black); }
  .nav-burger { display: flex; }
  .features { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
  .section-head { flex-direction: column; gap: 0.5rem; }
  .hero {
    min-height: 100vh;
    padding-bottom: 11.5rem;
  }
  .hero-keyboard {
    display: block;
    left: 1.2rem;
    right: 1.2rem;
    bottom: 1.2rem;
  }
  .keys { width: 100%; height: 88px; }
  .key--b, .key--r { height: 54px; }
  .key--w span { display: none; }
  .piano-help { font-size: 0.48rem; text-align: center; }
  .isotipo { flex-direction: column; align-items: flex-start; }
  .isotipo-variants { gap: 0.8rem; }
  .isotipo-box { width: 135px; height: 135px; }
}

/* ---------- ACCESIBILIDAD ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}