/* ==========================================================
   base.css — fuentes, variables, reset y tipografía
   ========================================================== */

@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/plus-jakarta-sans.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Color */
  --bg: #fafafb;
  --ink: #16161d;
  --ink-soft: #3a3a46;
  --muted: #5d5d6b;
  --line: rgba(22, 22, 45, 0.08);
  --line-strong: rgba(22, 22, 45, 0.14);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.88);

  --a1: #6366f1;          /* índigo */
  --a2: #a855f7;          /* violeta */
  --a-soft: #eef0ff;
  --a-ink: #4338ca;
  --grad: linear-gradient(100deg, var(--a1), var(--a2));

  --ok: #16a34a;
  --ok-soft: #ecfdf3;
  --ok-ink: #166534;

  /* Tipografía */
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;

  /* Radios: cada nivel de jerarquía tiene el suyo */
  --r-xl: 28px;   /* bloques grandes (contacto) */
  --r-lg: 22px;   /* tarjetas */
  --r-md: 14px;   /* elementos internos */
  --r-pill: 999px;

  /* Sombras */
  --shadow: 0 1px 2px rgba(30, 27, 75, 0.04), 0 8px 24px rgba(30, 27, 75, 0.06);
  --shadow-hover: 0 2px 4px rgba(30, 27, 75, 0.05), 0 18px 40px rgba(67, 56, 202, 0.12);

  /* Layout */
  --max: 1080px;
  --nav-h: 64px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 32px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
h4,
p,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--a-soft);
  color: var(--a-ink);
}

:focus-visible {
  outline: 2px solid var(--a1);
  outline-offset: 3px;
  border-radius: 8px;
}

/* Escala tipográfica */
h1 {
  font-size: clamp(2.6rem, 6.5vw, 4.6rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

h3 {
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.mono {
  font-family: var(--mono);
}

.muted {
  color: var(--muted);
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--r-pill);
  background: var(--ink);
  color: #fff;
  font-size: 0.9rem;
}

.skip-link:focus {
  top: 16px;
}

.icon {
  width: 18px;
  height: 18px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}