/* ============================================================
   UPGRADE — Design tokens
   Performance Marketing Agency. Oscuro, técnico, data-driven.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700;800;900&family=Geist+Mono:wght@300;400;500;600&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  /* Brand */
  --red:        #E2211C;   /* Upgrade red, lifted a touch */
  --red-bright: #FF2E26;
  --red-dim:    #A81814;
  --red-glow:   rgba(226, 33, 28, .35);

  /* Neutrals — dark mode first */
  --ink-0:  #050506;       /* deepest bg */
  --ink-1:  #0A0A0C;       /* page bg */
  --ink-2:  #101013;       /* surface */
  --ink-3:  #17171B;       /* card */
  --ink-4:  #1E1E24;       /* elevated */
  --ink-5:  #26262E;       /* border */
  --ink-6:  #35353F;       /* muted border */

  --fg-1:   #F4F4F5;       /* primary text */
  --fg-2:   #A1A1AA;       /* secondary */
  --fg-3:   #71717A;       /* tertiary */
  --fg-4:   #52525B;       /* quaternary / muted */

  /* Accents */
  --green:  #0AE07C;       /* positive metrics */
  --amber:  #FFB224;       /* warning / highlight */
  --blue:   #3B82F6;

  /* Type */
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-serif: 'Instrument Serif', 'Times New Roman', serif;

  /* Shape */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;

  /* Motion */
  --ease: cubic-bezier(.22,.61,.36,1);
}

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

body {
  background: var(--ink-1);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "ss02", "cv01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  letter-spacing: -0.011em;
  overflow-x: hidden;
}

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

/* ----- utilities ----- */
.mono { font-family: var(--font-mono); font-feature-settings: "ss01", "zero"; }
.serif { font-family: var(--font-serif); font-style: italic; }

.grid-bg {
  background-image:
    linear-gradient(to right, rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 64px 64px;
}

.noise::before {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: .035;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.9'/></svg>");
  mix-blend-mode: overlay;
}

/* Section eyebrow */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-3);
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--red);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--red-glow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s var(--ease);
  line-height: 1;
  white-space: nowrap;
}
.btn-primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06) inset, 0 1px 0 rgba(255,255,255,.15) inset, 0 8px 24px -8px var(--red-glow);
}
.btn-primary:hover { background: var(--red-bright); transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(255,255,255,0.06) inset, 0 1px 0 rgba(255,255,255,.2) inset, 0 12px 32px -8px var(--red-glow); }
.btn-ghost {
  background: transparent;
  color: var(--fg-1);
  border-color: var(--ink-5);
}
.btn-ghost:hover { background: var(--ink-3); border-color: var(--ink-6); }
.btn-sm { padding: 8px 14px; font-size: 13px; }

/* Card */
.card {
  background: var(--ink-2);
  border: 1px solid var(--ink-5);
  border-radius: var(--r-lg);
  position: relative;
}

/* Divider w/ tick marks like Linear */
.hr-ticks {
  height: 1px;
  background: var(--ink-5);
  position: relative;
}
.hr-ticks::before, .hr-ticks::after {
  content: ""; position: absolute;
  width: 1px; height: 7px;
  background: var(--ink-5);
  top: -3px;
}
.hr-ticks::before { left: 0; }
.hr-ticks::after  { right: 0; }

/* Tag pill */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--ink-3);
  border: 1px solid var(--ink-5);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-2);
  letter-spacing: 0.04em;
}

/* Scroll reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
[data-reveal].in {
  opacity: 1;
  transform: none;
}

/* Marquee */
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee {
  display: flex;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track {
  display: flex;
  animation: marquee 60s linear infinite;
  flex-shrink: 0;
  gap: 80px;
  padding-right: 80px;
  align-items: center;
}

/* Pulse dot */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}
.live-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(10, 224, 124, .6);
  animation: pulse-dot 1.6s ease-in-out infinite;
}

/* Subtle neuron background for hero variant */
.neuron-bg {
  position: absolute; inset: 0;
  background: url('assets/neurons.png') center/cover no-repeat;
  opacity: .20;
  mix-blend-mode: screen;
  filter: hue-rotate(-8deg) contrast(1.1);
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, #000 20%, transparent 80%);
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 720px) {
  .container { padding: 0 20px; }
}

/* =================== RESPONSIVE =================== */
@media (max-width: 960px) {
  .hide-md { display: none !important; }
  .grid-2-md { grid-template-columns: 1fr !important; gap: 24px !important; }
  .grid-3-md { grid-template-columns: 1fr !important; gap: 16px !important; }
  .grid-4-md { grid-template-columns: 1fr 1fr !important; }
  .stack-md  { flex-direction: column !important; align-items: flex-start !important; }
  .full-md   { width: 100% !important; }
}
@media (max-width: 720px) {
  .hide-sm { display: none !important; }
  .grid-3-sm { grid-template-columns: 1fr !important; gap: 12px !important; }
  .grid-4-sm { grid-template-columns: 1fr 1fr !important; }
  .stack-sm  { flex-direction: column !important; align-items: flex-start !important; gap: 20px !important; }
  .nav-links-sm { display: none !important; }
  .pad-sm { padding: 60px 0 !important; }
  .btn { padding: 10px 16px; font-size: 13px; }
}

/* Form styles */
.input {
  width: 100%;
  padding: 14px 18px;
  background: var(--ink-2);
  border: 1px solid var(--ink-5);
  border-radius: 10px;
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: border-color .2s var(--ease), background .2s var(--ease);
  outline: none;
}
.input:focus { border-color: var(--red); background: var(--ink-3); }
.input::placeholder { color: var(--fg-4); }
textarea.input { resize: vertical; min-height: 96px; line-height: 1.5; }

.field-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--fg-3);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 8px;
  display: block;
}

/* Section */
section { position: relative; }

/* Text flourishes */
.h-display {
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 0.98;
}
.h-display em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
}
html[data-serif-accent="0"] .h-display em,
html[data-serif-accent="0"] .serif {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 500;
  letter-spacing: -0.03em;
}

/* Status bar ticker */
.ticker {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.06em;
}

/* Gradient text — used sparingly */
.gradient-red {
  background: linear-gradient(180deg, #fff 0%, #fff 45%, var(--red-bright) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}