/* =========================================================
   Rudolf Tech — main.css
   Sistema de diseño (tokens) + estilos de la landing
   Paleta: grafito + señal ámbar  ·  Tipos: Space Grotesk / Inter / JetBrains Mono
   ========================================================= */

/* ---------- 1. Variables (design tokens) ---------- */
:root {
  /* Color */
  --ink:        #0E1116;   /* fondo principal */
  --ink-2:      #161B22;   /* superficie / hover */
  --line:       #232A33;   /* líneas finas y bordes */
  --fog:        #8B97A7;   /* texto secundario */
  --paper:      #E8ECF1;   /* texto principal */
  --signal:     #F2B705;   /* acento (ámbar) */
  --signal-hi:  #FFCE2E;   /* acento al pasar el ratón */

  /* Tipografía */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* Escala de texto fluida (se adapta al ancho de pantalla) */
  --step--1: clamp(0.78rem, 0.75rem + 0.1vw, 0.85rem);
  --step-0:  clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  --step-1:  clamp(1.15rem, 1.05rem + 0.5vw, 1.4rem);
  --step-2:  clamp(1.4rem, 1.2rem + 1vw, 1.9rem);
  --step-4:  clamp(2.3rem, 1.6rem + 3.4vw, 4.4rem);

  /* Espaciado */
  --sp-2: 1rem;
  --sp-3: 1.5rem;
  --sp-4: 2rem;
  --sp-6: 3.5rem;
  --sp-8: 6rem;

  --radius: 8px;
  --maxw: 1080px;
}

/* ---------- 2. Reset moderno ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--paper);
  line-height: 1.6;
  font-size: var(--step-0);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
svg { display: block; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 3px; }

/* ---------- 3. Rejilla técnica de fondo (la "firma" de la página) ---------- */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.22;
  -webkit-mask-image: radial-gradient(ellipse 85% 55% at 50% 0%, #000 25%, transparent 80%);
          mask-image: radial-gradient(ellipse 85% 55% at 50% 0%, #000 25%, transparent 80%);
}

/* ---------- 4. Contenedores ---------- */
.site-header,
main,
.site-footer { width: min(92%, var(--maxw)); margin-inline: auto; }

/* ---------- 5. Cabecera ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  padding-block: var(--sp-3);
}
.brand { display: inline-flex; align-items: center; gap: 0.6rem; }
.brand-mark { width: 26px; height: 26px; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.brand-dot { color: var(--signal); }

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--fog);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  white-space: nowrap;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(242, 183, 5, 0.6); }
  70%  { box-shadow: 0 0 0 7px rgba(242, 183, 5, 0); }
  100% { box-shadow: 0 0 0 0 rgba(242, 183, 5, 0); }
}

/* ---------- 6. Hero ---------- */
.hero { padding-block: clamp(3.5rem, 9vw, 8rem) var(--sp-8); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--signal);
  margin-bottom: var(--sp-3);
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--signal);
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 16ch;
  margin-bottom: var(--sp-3);
}
.hero-sub {
  color: var(--fog);
  font-size: var(--step-1);
  max-width: 52ch;
  line-height: 1.55;
  margin-bottom: var(--sp-4);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

/* ---------- 7. Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: var(--step-0);
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, color 180ms ease;
}
.btn-primary { background: var(--signal); color: var(--ink); font-weight: 600; }
.btn-primary:hover { background: var(--signal-hi); transform: translateY(-2px); }
.btn-ghost { color: var(--paper); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--signal); color: var(--signal); }

/* ---------- 8. Servicios (rejilla con líneas finas entre celdas) ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: 1px;
  background: var(--line);          /* el "gap" pinta las líneas finas */
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--sp-8);
}
.service {
  background: var(--ink);
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: background 200ms ease;
}
.service:hover { background: var(--ink-2); }
.service-tag {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.06em;
  color: var(--signal);
}
.service-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-2);
  letter-spacing: -0.01em;
}
.service-desc { color: var(--fog); font-size: var(--step-0); }

/* ---------- 9. Pie de página ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: var(--sp-6);
  margin-bottom: var(--sp-4);
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-3);
}
.footer-kicker { color: var(--fog); margin-bottom: 0.4rem; }
.footer-mail {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-2);
  letter-spacing: -0.01em;
  border-bottom: 2px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}
.footer-mail:hover { color: var(--signal); border-color: var(--signal); }
.footer-legal { font-family: var(--font-mono); font-size: var(--step--1); color: var(--fog); }

/* ---------- 10. Animación de entrada ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero > * {
    opacity: 0;
    transform: translateY(12px);
    animation: rise 700ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  }
  .eyebrow      { animation-delay: 80ms; }
  .hero-title   { animation-delay: 160ms; }
  .hero-sub     { animation-delay: 260ms; }
  .hero-actions { animation-delay: 360ms; }
}
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- 11. Responsive fino ---------- */
@media (max-width: 420px) {
  .status-text { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 12. Contactos del pie (email + Telegram) ---------- */
.footer-contacts {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.8rem;
  margin-top: 0.4rem;
}
.footer-tg {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--fog);
  transition: color 180ms ease;
}
.footer-tg svg { width: 16px; height: 16px; }
.footer-tg:hover { color: var(--signal); }