/* ==========================================================================
   CEDDI — Centro de Estudios de Derecho Digital
   Sistema de diseño: paleta clara, tipografía Fraunces + IBM Plex Sans
   ========================================================================== */

:root {
  /* Paleta */
  --color-bg: #F6F7F7;
  --color-surface: #FFFFFF;
  --color-text: #121212;
  --color-text-soft: #4B4F51;
  --color-accent: #7AD5D9;
  --color-accent-strong: #2F969B;
  --color-structure: #969FA2;
  --color-structure-soft: #E4E6E7;

  /* Tipografía */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;

  /* Layout */
  --container-max: 1180px;
  --radius-base: 4px;
  --radius-lg: 10px;

  /* Movimiento */
  --transition-base: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* Fondo animado (partículas) + contenedor de contenido por encima */
#bg-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.site-shell {
  position: relative;
  z-index: 1;
}

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

:focus-visible {
  outline: 2px solid var(--color-accent-strong);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Botones
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: var(--radius-base);
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.btn-primary {
  background: var(--color-text);
  color: var(--color-bg);
  border: 1px solid var(--color-text);
}

.btn-primary:hover {
  background: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
  color: #FFFFFF;
}

.btn-text {
  color: var(--color-accent-strong);
  padding: 12px 4px;
  border-bottom: 1px solid transparent;
}

.btn-text:hover {
  border-bottom-color: var(--color-accent-strong);
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(246, 247, 247, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-structure-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
}

.brand-mark {
  width: 30px;
  height: 30px;
  color: var(--color-accent-strong);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.site-nav {
  margin-left: auto;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
}

.site-nav a {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  padding: 6px 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.site-nav a:hover {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.header-cta {
  padding: 10px 18px;
  font-size: 0.9rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding: 72px 0 96px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}

.hero-content h1 {
  font-size: clamp(2.1rem, 3.4vw, 3rem);
  max-width: 14ch;
  margin-bottom: 24px;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--color-text-soft);
  max-width: 52ch;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-figure {
  justify-self: center;
  width: 100%;
  max-width: 440px;
}

.hero-visual-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 360px;
}

#hero-scales-canvas {
  width: 100%;
  max-width: 440px;
  height: 400px;
  display: block;
}

.scales-ambient-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122, 213, 217, 0.18) 0%, rgba(122, 213, 217, 0.08) 50%, transparent 72%);
  pointer-events: none;
  z-index: -1;
  filter: blur(36px);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .hero-figure {
    order: -1;
    max-width: 340px;
  }
}

@media (max-width: 760px) {
  .site-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-structure-soft);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }
  .site-nav.is-open {
    max-height: 320px;
  }
  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
  }
  .site-nav a {
    display: block;
    padding: 12px 0;
  }
  .header-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
}