/* ============================================
   ALBERTO KEYS V2 — Design tokens
   Netflix + Ferrari + Tesla · Negro + Rojo
   ============================================ */

:root {
  /* Color — base */
  --ink: #0A0A0A;
  --ink-2: #0F0F0F;
  --ink-3: #141414;
  --ink-4: #1C1C1C;
  --ink-5: #262626;

  --paper: #FFFFFF;
  --mist: #F5F5F5;
  --stone: #E5E5E5;
  --slate: #525252;
  --slate-2: #A0A0A0;
  --slate-3: #6B6B6B;

  /* Acento — ROJO protagonista */
  --red: #E50914;
  --red-2: #FF1F2D;
  --red-3: #B8070F;
  --red-4: #8B0000;
  --red-glow: rgba(229, 9, 20, 0.35);
  --red-soft: rgba(229, 9, 20, 0.10);

  /* Gradient */
  --grad-red: linear-gradient(135deg, #E50914 0%, #8B0000 100%);
  --grad-red-h: linear-gradient(135deg, #FF1F2D 0%, #B8070F 100%);

  /* Accent variants (tweakable) */
  --accent: var(--red);
  --accent-2: var(--red-2);
  --accent-3: var(--red-3);
  --accent-4: var(--red-4);
  --accent-glow: var(--red-glow);
  --accent-soft: var(--red-soft);
  --accent-grad: var(--grad-red);
  --accent-grad-h: var(--grad-red-h);

  /* Utilitarios */
  --wa: #25D366;
  --ok: #10B981;

  /* Tipografía */
  --font-display: "Inter Tight", "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-sans:    "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  /* Radii */
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-pill: 999px;

  /* Shadow */
  --sh-sm: 0 2px 8px rgba(0, 0, 0, 0.10);
  --sh-md: 0 8px 28px rgba(0, 0, 0, 0.18);
  --sh-lg: 0 24px 60px rgba(0, 0, 0, 0.32);
  --sh-red: 0 10px 40px rgba(229, 9, 20, 0.35);
  --sh-red-sm: 0 4px 16px rgba(229, 9, 20, 0.25);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.5, 0, 0.75, 0);
}

/* Tweakable accent themes */
[data-accent="crimson"] {
  --accent: #DC143C;
  --accent-2: #FF2E5A;
  --accent-3: #A8102F;
  --accent-4: #6E0A1F;
  --accent-glow: rgba(220, 20, 60, 0.35);
  --accent-soft: rgba(220, 20, 60, 0.10);
  --accent-grad: linear-gradient(135deg, #DC143C 0%, #6E0A1F 100%);
  --accent-grad-h: linear-gradient(135deg, #FF2E5A 0%, #A8102F 100%);
}
[data-accent="blood"] {
  --accent: #B00020;
  --accent-2: #D01030;
  --accent-3: #780015;
  --accent-4: #4A000E;
  --accent-glow: rgba(176, 0, 32, 0.35);
  --accent-soft: rgba(176, 0, 32, 0.10);
  --accent-grad: linear-gradient(135deg, #B00020 0%, #4A000E 100%);
  --accent-grad-h: linear-gradient(135deg, #D01030 0%, #780015 100%);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.005em;
}

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

/* Display */
.display {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.92;
}

/* Eyebrow — with red dot */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--accent);
}
.eyebrow::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.eyebrow.on-dark { color: var(--accent-2); }

/* Container */
.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 720px) {
  .container { padding: 0 20px; }
}

/* Section rhythm */
.section { padding: 120px 0; }
.section-tight { padding: 88px 0; }
@media (max-width: 720px) {
  .section { padding: 72px 0; }
  .section-tight { padding: 56px 0; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 30px;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: transform 240ms var(--ease), background 240ms var(--ease),
              color 240ms var(--ease), border-color 240ms var(--ease),
              box-shadow 240ms var(--ease);
  white-space: nowrap;
  text-transform: uppercase;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn .arrow { transition: transform 240ms var(--ease); font-weight: 400; }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  background: var(--accent-grad);
  color: #FFF;
  box-shadow: var(--sh-red-sm);
  border: 0;
  position: relative;
}
.btn-primary:hover {
  background: var(--accent-grad-h);
  box-shadow: var(--sh-red);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #FFF;
  box-shadow: var(--sh-red-sm);
}

.btn-ghost {
  background: transparent;
  color: inherit;
  border-color: currentColor;
  opacity: 0.85;
  text-transform: none;
  font-weight: 500;
  letter-spacing: -0.005em;
}
.btn-ghost:hover { opacity: 1; background: rgba(255,255,255,0.06); }

.btn-wa {
  background: var(--wa);
  color: #fff;
}
.btn-wa:hover { background: #1fb757; }

.btn-lg { padding: 22px 36px; font-size: 16px; }
.btn-xl { padding: 26px 42px; font-size: 17px; }

/* Utility */
.muted { color: var(--slate); }
.on-dark .muted, .on-dark.muted { color: var(--slate-2); }

/* Red gradient divider */
.div-red {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent) 20%, var(--accent) 80%, transparent);
  opacity: 0.5;
  margin: 0 auto;
  max-width: 960px;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 900ms var(--ease), transform 900ms var(--ease);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }

/* Focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: var(--accent); color: #FFF; }

/* Marquee */
.marquee {
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 8%, #000 92%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0, #000 8%, #000 92%, transparent 100%);
}
.marquee-track {
  display: flex;
  gap: 64px;
  width: max-content;
  -webkit-animation: marquee 60s linear infinite;
          animation: marquee 60s linear infinite;
  will-change: transform;
}
.marquee:hover .marquee-track { animation-play-state: paused; -webkit-animation-play-state: paused; }
@-webkit-keyframes marquee {
  from { -webkit-transform: translateX(0); transform: translateX(0); }
  to { -webkit-transform: translateX(-50%); transform: translateX(-50%); }
}
@keyframes marquee {
  from { -webkit-transform: translateX(0); transform: translateX(0); }
  to { -webkit-transform: translateX(-50%); transform: translateX(-50%); }
}
/* Mobile: faster + explicit non-wrapping */
@media (max-width: 759px) {
  .marquee-track {
    -webkit-animation-duration: 40s;
            animation-duration: 40s;
    flex-wrap: nowrap !important;
  }
  .marquee { -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%); mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%); }
}

/* Section backgrounds */
.on-dark { background: var(--ink); color: #FFF; }
.on-bone { background: var(--mist); }

/* Red gradient text — for single word emphasis */
.red-grad {
  background: var(--accent-grad-h);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
          color: transparent;
}

/* Red bloom — reusable */
.red-bloom {
  position: absolute;
  pointer-events: none;
  background: radial-gradient(50% 50% at 50% 50%, var(--accent-glow) 0%, transparent 70%);
  filter: blur(20px);
}


/* ============================================ Language switch fade-out */
html.lang-switching body {
  opacity: 0;
  transition: opacity 200ms ease-out;
  pointer-events: none;
}