:root {
  /* Paleta FIDE derivada del logo */
  --ink: #0B0B0D;
  --ink-2: #14141A;
  --ink-3: #1E1E26;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);
  --paper: #F4F0E8;
  --paper-2: #EAE4D6;
  --paper-ink: #181818;
  --muted: rgba(255,255,255,0.55);
  --muted-ink: rgba(11,11,13,0.55);

  /* Colores del logo */
  --fire: #B83239;
  --fire-soft: #D95A61;
  --ember: #7A1F24;
  --amber: #D9A441;
  --amber-soft: #EBC274;
  --ice: #A8CDE0;
  --ice-soft: #CFE3EF;
  --silver: #BFC3C6;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--ink); color: #fff; font-family: var(--font-body); -webkit-font-smoothing: antialiased; }
body[data-palette="light"] { background: var(--paper); color: var(--paper-ink); }

body { overflow-x: hidden; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: var(--fire); color: #fff; }

/* Utility: grid 12 cols, 1440 max */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 720px) { .container { padding: 0 20px; } }

/* Rombos decorativos SVG -> usados como bullets/markers */
.diamond {
  display: inline-block;
  width: 10px;
  height: 10px;
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* Kicker / eyebrow */
.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
body[data-palette="light"] .kicker { color: var(--muted-ink); }

/* Display type */
.display {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 0.92;
  letter-spacing: -0.035em;
}

/* Subtle grid overlay */
.section {
  position: relative;
  padding: 120px 0;
  border-top: 1px solid var(--line);
}
body[data-palette="light"] .section { border-top-color: rgba(0,0,0,0.08); }
.section:first-of-type { border-top: none; }

@media (max-width: 720px) {
  .section { padding: 80px 0; }
}

/* Noise texture overlay (super subtle) */
.noise::before {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.6'/></svg>");
}

/* Link underline */
.link-u {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
}
.link-u::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform-origin: right;
  transform: scaleX(1);
  transition: transform .5s cubic-bezier(.77,0,.18,1);
}
.link-u:hover::after { transform-origin: left; transform: scaleX(0); }

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background .25s ease, color .25s ease, transform .2s ease;
}
.btn:hover { background: currentColor; transform: translateY(-1px); }
.btn:hover > * { color: var(--ink); }
body[data-palette="light"] .btn:hover > * { color: var(--paper); }
.btn--fire { color: #fff; background: var(--fire); border-color: var(--fire); }
.btn--fire:hover { background: var(--ember); border-color: var(--ember); }
.btn--fire:hover > * { color: #fff; }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s ease, transform .9s cubic-bezier(.2,.7,.2,1);
}
.reveal.in { opacity: 1; transform: none; }

/* Placeholder image (striped) */
.img-ph {
  position: relative;
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,0.04) 0 10px, rgba(255,255,255,0.02) 10px 20px),
    var(--ink-2);
  border: 1px solid var(--line);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 16px;
}
body[data-palette="light"] .img-ph {
  background:
    repeating-linear-gradient(135deg, rgba(0,0,0,0.04) 0 10px, rgba(0,0,0,0.02) 10px 20px),
    var(--paper-2);
  border-color: rgba(0,0,0,0.08);
}
.img-ph__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}
body[data-palette="light"] .img-ph__label { color: var(--muted-ink); }

/* Helpers */
.hide-mobile { display: initial; }
@media (max-width: 720px) { .hide-mobile { display: none; } }

/* Ticker */
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Diamond pattern background */
.diamond-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(45deg, transparent 47%, var(--line) 47% 53%, transparent 53%),
    linear-gradient(-45deg, transparent 47%, var(--line) 47% 53%, transparent 53%);
  background-size: 48px 48px;
}
body[data-palette="light"] .diamond-bg {
  background-image:
    linear-gradient(45deg, transparent 47%, rgba(0,0,0,0.06) 47% 53%, transparent 53%),
    linear-gradient(-45deg, transparent 47%, rgba(0,0,0,0.06) 47% 53%, transparent 53%);
}