/* ============================================================
   CIRCULARSOFT · Práctica Economía Circular
   estilos.css — Diseño eco-futurista verde, versión clara
   Juan Raigón · Federico Lora · EcoCode Studio
   ============================================================ */

:root {
  --v4: #276b38; --v5: #2ecc57; --v6: #3ddb68;
  --v7: #6de88a; --v8: #aaf0bf; --v9: #d8f7e4;
  --card: #1f3828;
  --txt-p: #d8f7e4;
  --txt-s: #c8e8d4;
  --txt-t: #8ab89a;
  --display: 'Syne', sans-serif;
  --cuerpo: 'DM Sans', sans-serif;
  --xs: 0.5rem; --s: 1rem; --m: 1.5rem;
  --l: 2.5rem; --xl: 4rem; --xxl: 7rem;
  --rm: 12px; --rl: 20px;
  --ease: 0.3s cubic-bezier(0.4,0,0.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { background: #142019; color: var(--txt-p); font-family: var(--cuerpo); line-height: 1.65; overflow-x: hidden; }
::selection { background: var(--v5); color: #071208; }
img { max-width: 100%; display: block; }

/* ── Barra progreso ─────────────────────────────────────────── */
#barra-progreso {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg, var(--v5), var(--v7));
  width: 0%; z-index: 9999; transition: width 0.1s linear;
}

/* ── Navegación ─────────────────────────────────────────────── */
#nav-principal {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--l); height: 64px;
  background: rgba(14,36,22,0.92); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(46,204,87,0.15);
  transition: background var(--ease);
}
#nav-principal.nav-solido { background: rgba(14,36,22,0.99); }

.nav-logo {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--display); font-weight: 800; font-size: 1rem;
  color: var(--v7); letter-spacing: 0.04em;
}
.logo-icono { font-size: 1.4rem; color: var(--v5); animation: girar 9s linear infinite; }
.logo-autores { font-size: 0.65rem; color: var(--txt-t); font-weight: 400; margin-left: 4px; display: none; }
@media (min-width: 900px) { .logo-autores { display: inline; } }
@keyframes girar { to { transform: rotate(360deg); } }

.nav-enlaces { display: flex; list-style: none; gap: var(--m); }
/* Estilo base del enlace */
.nav-enlaces a {
  color: var(--txt-s);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 12px;
  position: relative;
  transition: color var(--ease);
}
.nav-enlaces a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--v5); /* Tu verde brillante */
  transition: width var(--ease);
  box-shadow: 0 0 8px rgba(46, 204, 87, 0.6);
}
.nav-enlaces a:hover, .nav-enlaces a:focus { color: var(--v7); outline: none; }
.nav-enlaces a:hover::after,
.nav-enlaces a[aria-current="page"] {
  color: var(--v5); /* Cambia el texto a verde también si quieres */
}
.nav-enlaces a[aria-current]::after { width: 100%; background: #2ecc57; box-shadow: 0 0 8px rgba(46,204,87,0.8); }

.nav-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-hamburger span { display: block; width: 24px; height: 2px; background: var(--v7); border-radius: 2px; transition: transform var(--ease), opacity var(--ease); }
.nav-hamburger.activo span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.activo span:nth-child(2) { opacity: 0; }
.nav-hamburger.activo span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────────────────── */
.seccion-hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; padding-top: 64px;
}
.hero-fondo {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(46,180,90,0.28) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(60,220,100,0.13) 0%, transparent 50%),
    linear-gradient(180deg, #0e2416 0%, #0a1a0f 100%);
}

.hex-grid { position: absolute; inset: 0; overflow: hidden; }
.hex {
  position: absolute; width: 80px; height: 80px;
  border: 1px solid rgba(46,204,87,0.1);
  clip-path: polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%);
  animation: pulsarHex 4s ease-in-out infinite;
}
.hex.h1 { top:10%; left:5%; width:60px; height:60px; animation-delay:0s; }
.hex.h2 { top:20%; left:15%; width:100px; height:100px; background:rgba(46,204,87,0.03); animation-delay:0.5s; }
.hex.h3 { top:60%; left:8%; animation-delay:1s; }
.hex.h4 { top:5%; right:10%; width:120px; height:120px; animation-delay:1.5s; }
.hex.h5 { top:40%; right:5%; width:70px; height:70px; animation-delay:0.7s; }
.hex.h6 { bottom:15%; right:15%; animation-delay:2s; }
.hex.h7 { bottom:10%; left:20%; width:90px; height:90px; animation-delay:1.2s; }
.hex.h8 { top:50%; left:45%; width:50px; height:50px; animation-delay:0.3s; }
@keyframes pulsarHex {
  0%,100% { opacity:0.25; transform:scale(1); }
  50% { opacity:0.65; transform:scale(1.06); }
}

.hero-contenido {
  position: relative; z-index: 1; text-align: center;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  animation: aparecerHero 1s ease-out 0.2s both;
}
@keyframes aparecerHero {
  from { opacity:0; transform:translateY(28px); }
  to   { opacity:1; transform:translateY(0); }
}

.hero-badge {
  display: inline-block;
  background: rgba(46,204,87,0.1); border: 1px solid rgba(46,204,87,0.3);
  color: var(--v7); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 6px 18px; border-radius: 100px; margin-bottom: var(--m);
}

.hero-titulo {
  font-family: var(--display); font-weight: 800;
  margin-bottom: var(--m); line-height: 1.05;
}

.titulo-linea1 {
  display: block;
  font-size: clamp(1.1rem, 3.2vw, 2.2rem);
  color: var(--v7); font-weight: 600; letter-spacing: 0.02em;
  margin-bottom: 0.15em;
}

.titulo-linea2 {
  display: block;
  font-size: clamp(2.8rem, 8vw, 6rem);
  color: var(--v9);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 0.95;
  text-align: center;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitulo {
  font-size: clamp(0.93rem, 2vw, 1.12rem);
  color: var(--txt-s); max-width: 580px;
  margin: 0 auto var(--m); font-weight: 300; line-height: 1.7;
}
.hero-subtitulo strong { color: var(--v8); }

.hero-autores {
  display: flex; justify-content: center; gap: var(--m);
  margin-bottom: var(--m); flex-wrap: wrap;
}
.autor-chip {
  display: flex; align-items: center; gap: 0.5rem;
  background: rgba(46,204,87,0.12); border: 1px solid rgba(46,204,87,0.35);
  color: var(--v8); font-family: var(--display); font-weight: 600;
  font-size: 0.92rem; padding: 8px 20px; border-radius: 100px;
}

.hero-chips {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 8px; margin-bottom: var(--l);
}
.chip {
  background: rgba(46,204,87,0.08); border: 1px solid rgba(46,204,87,0.2);
  color: var(--v8); font-size: 0.82rem; padding: 5px 14px; border-radius: 100px;
}

.btn-hero {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--v5); color: #071208;
  font-family: var(--display); font-weight: 700; font-size: 1rem;
  text-decoration: none; padding: 14px 36px; border-radius: 100px;
  box-shadow: 0 0 30px rgba(46,204,87,0.3);
  transition: background var(--ease), transform var(--ease), box-shadow var(--ease);
}
.btn-hero:hover { background: var(--v6); transform: translateY(-2px); box-shadow: 0 0 50px rgba(46,204,87,0.5); }
.btn-flecha { animation: botar 1.5s ease-in-out infinite; }
@keyframes botar { 0%,100% { transform:translateY(0); } 50% { transform:translateY(5px); } }

.hero-scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  font-size: 0.7rem; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--txt-t); opacity: 0.6;
}

/* ── Secciones base ─────────────────────────────────────────── */
.seccion { padding: var(--xxl) 0; background: #142019; }
.seccion-alt { background: #1a2e22; }
.seccion-7r { background: #0f1c12; }
.seccion-conclusiones { background: linear-gradient(180deg, #0f1c12 0%, #1a2e22 100%); }

.seccion-contenedor { max-width: 1140px; margin: 0 auto; padding: 0 var(--l); }

.seccion-header { display: flex; align-items: flex-start; gap: var(--m); margin-bottom: var(--xl); }

.seccion-num {
  font-family: var(--display); font-size: 4rem; font-weight: 800;
  color: rgba(46,204,87,0.13); line-height: 1; flex-shrink: 0; min-width: 80px;
}

.seccion-etiqueta {
  font-size: 0.75rem; font-weight: 500; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--v5); margin-bottom: 0.3rem;
}

.seccion-header h2 {
  font-family: var(--display); font-size: clamp(1.8rem,4vw,2.8rem);
  font-weight: 700; color: #f0fff5; line-height: 1.1;
}

.seccion-desc { color: var(--txt-s); font-size: 1.02rem; max-width: 620px; margin-bottom: var(--xl); }
.subtitulo-sec { font-family: var(--display); font-size: 1.05rem; font-weight: 700; color: var(--v7); margin-bottom: var(--m); }
.mt-2 { margin-top: var(--xl); }

/* ── Grids ───────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--l); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--m); }

/* ── Tarjetas ────────────────────────────────────────────────── */
.tarjeta {
  background: var(--card); border: 1px solid rgba(46,204,87,0.13);
  border-radius: var(--rl); padding: var(--l);
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}
.tarjeta:hover { border-color: rgba(46,204,87,0.3); box-shadow: 0 0 24px rgba(46,204,87,0.12); transform: translateY(-3px); }
.tarjeta-destacada { background: linear-gradient(135deg, rgba(30,90,50,0.4) 0%, var(--card) 100%); border-color: rgba(46,204,87,0.22); }
.tarjeta-icono { font-size: 2rem; margin-bottom: var(--s); }
.tarjeta h3 { font-family: var(--display); font-size: 1.1rem; font-weight: 700; color: var(--v7); margin-bottom: var(--s); }
.tarjeta p { color: var(--txt-s); font-size: 0.93rem; line-height: 1.7; margin-bottom: var(--s); }
.tarjeta p:last-child { margin-bottom: 0; }
.tarjeta strong { color: var(--v8); }
.lista-pro { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.lista-pro li { color: var(--txt-s); font-size: 0.9rem; padding-left: 1.2rem; position: relative; }
.lista-pro li::before { content: '›'; position: absolute; left: 0; color: var(--v5); font-weight: 700; }

/* ── Stats ───────────────────────────────────────────────────── */
.stat-card {
  background: var(--card); border: 1px solid rgba(46,204,87,0.13);
  border-radius: var(--rm); padding: var(--l); text-align: center;
  transition: transform var(--ease), border-color var(--ease);
}
.stat-card:hover { transform: translateY(-4px); border-color: rgba(46,204,87,0.3); }
.stat-num { font-family: var(--display); font-size: 2.4rem; font-weight: 800; color: var(--v6); line-height: 1; margin-bottom: 0.5rem; }
.stat-label { font-size: 0.85rem; color: var(--txt-s); line-height: 1.4; }

/* ── Objetivos ───────────────────────────────────────────────── */
.grid-obj { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--m); }
.obj-card {
  background: var(--card); border: 1px solid rgba(46,204,87,0.1);
  border-radius: var(--rl); padding: var(--l);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.obj-card:hover { transform: translateY(-5px); border-color: rgba(46,204,87,0.28); box-shadow: 0 0 24px rgba(46,204,87,0.1); }
.obj-ico { font-size: 2rem; margin-bottom: var(--s); }
.obj-card h3 { font-family: var(--display); font-size: 1rem; font-weight: 700; color: var(--v7); margin-bottom: 0.5rem; }
.obj-card p { font-size: 0.88rem; color: var(--txt-s); line-height: 1.65; }

/* ── Sistema ─────────────────────────────────────────────────── */
.sistema-intro {
  background: rgba(46,204,87,0.07); border-left: 3px solid var(--v5);
  padding: var(--m) var(--l); border-radius: 0 var(--rm) var(--rm) 0;
  font-size: 1.02rem; color: var(--txt-s); line-height: 1.7;
}
.sistema-intro strong { color: var(--v8); }

.modulo-lista { display: flex; flex-direction: column; gap: var(--m); }
.modulo-item {
  display: flex; gap: var(--m); align-items: flex-start; padding: var(--m);
  background: var(--card); border-radius: var(--rm); border: 1px solid rgba(46,204,87,0.09);
  transition: border-color var(--ease);
}
.modulo-item:hover { border-color: rgba(46,204,87,0.22); }
.modulo-ico { font-size: 1.5rem; flex-shrink: 0; }
.modulo-item strong { display: block; color: var(--v7); font-size: 0.93rem; margin-bottom: 0.25rem; }
.modulo-item p { font-size: 0.85rem; color: var(--txt-s); line-height: 1.6; }

.arq-diagrama { display: flex; flex-direction: column; border: 1px solid rgba(46,204,87,0.16); border-radius: var(--rl); overflow: hidden; }
.arq-capa { padding: var(--m) var(--l); display: flex; flex-direction: column; gap: 3px; }
.arq-capa span { font-family: var(--display); font-weight: 700; font-size: 0.93rem; color: #f0fff5; }
.arq-capa small { font-size: 0.78rem; color: var(--txt-t); }
.arq-frontend { background: rgba(46,204,87,0.2); }
.arq-backend  { background: rgba(46,204,87,0.14); }
.arq-datos    { background: rgba(46,204,87,0.09); }
.arq-infra    { background: rgba(46,204,87,0.05); }
.arq-flecha { text-align: center; font-size: 0.75rem; color: var(--v5); padding: 5px; background: rgba(0,0,0,0.18); letter-spacing: 0.05em; }

/* ── Impacto ─────────────────────────────────────────────────── */
.impacto-intro { font-size: 1.02rem; color: var(--txt-s); max-width: 700px; line-height: 1.7; }
.impacto-lista { display: flex; flex-direction: column; gap: var(--m); }
.impacto-row {
  display: flex; gap: var(--m); padding: var(--m); background: var(--card);
  border-radius: var(--rm); border: 1px solid transparent;
  transition: border-color var(--ease); align-items: flex-start;
}
.negativa .impacto-row { border-color: rgba(220,80,80,0.1); }
.negativa .impacto-row:hover { border-color: rgba(220,80,80,0.25); }
.positiva .impacto-row { border-color: rgba(46,204,87,0.1); }
.positiva .impacto-row:hover { border-color: rgba(46,204,87,0.28); }
.impacto-icono { font-size: 1.5rem; flex-shrink: 0; }
.impacto-row strong { display: block; color: #f0fff5; font-size: 0.93rem; margin-bottom: 0.25rem; }
.impacto-row p { font-size: 0.85rem; color: var(--txt-s); line-height: 1.6; }

/* ── 7R acordeón ─────────────────────────────────────────────── */
.r-grid { display: flex; flex-direction: column; gap: var(--m); }
.r-card { background: var(--card); border: 1px solid rgba(46,204,87,0.12); border-radius: var(--rl); overflow: hidden; transition: border-color var(--ease); }
.r-card:hover { border-color: rgba(46,204,87,0.28); }
.r-toggle { width: 100%; background: none; border: none; cursor: pointer; text-align: left; padding: 0; }
.r-header { display: flex; align-items: center; gap: var(--m); padding: var(--m) var(--l); transition: background var(--ease); }
.r-toggle:hover .r-header, .r-toggle:focus .r-header { background: rgba(46,204,87,0.07); outline: none; }
.r-numero { font-family: var(--display); font-size: 1.8rem; font-weight: 800; color: var(--v5); min-width: 48px; opacity: 0.85; }
.r-info { flex: 1; }
.r-nombre { font-family: var(--display); font-size: 1.15rem; font-weight: 700; color: #f0fff5; margin-bottom: 2px; }
.r-resumen { font-size: 0.85rem; color: var(--txt-s); }
.r-chevron { font-size: 1.5rem; font-weight: 300; color: var(--v5); transition: transform var(--ease); width: 32px; text-align: center; flex-shrink: 0; }
.r-toggle[aria-expanded="true"] .r-chevron { transform: rotate(45deg); }
.r-detalle { border-top: 1px solid rgba(46,204,87,0.1); }
.r-detalle[hidden] { display: none; }
.r-detalle-inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--l); padding: var(--l); }
.r-col h4 { font-family: var(--display); font-size: 0.82rem; font-weight: 700; color: var(--v6); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--m); }
.lista-r { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.lista-r li { font-size: 0.88rem; color: var(--txt-s); padding-left: 1rem; position: relative; line-height: 1.65; }
.lista-r li::before { content: '▸'; position: absolute; left: 0; color: var(--v5); font-size: 0.7rem; top: 0.2em; }
.lista-r li strong { color: var(--v8); }
.r-impacto-box { background: rgba(46,204,87,0.06); border: 1px solid rgba(46,204,87,0.14); border-radius: var(--rm); padding: var(--m); }
.r-impacto-box p { font-size: 0.88rem; color: var(--txt-s); line-height: 1.65; margin-bottom: var(--m); }
.r-impacto-box p:last-child { margin-bottom: 0; }
.r-impacto-box strong { color: var(--v7); }
.r-metrica { margin-top: var(--s); }
.r-metrica span { display: block; font-size: 0.78rem; color: var(--txt-t); margin-bottom: 6px; }
.barra-metrica { background: rgba(255,255,255,0.08); border-radius: 100px; height: 10px; overflow: hidden; }
.barra-fill {
  height: 100%; width: var(--pct); background: linear-gradient(90deg, #276b38, var(--v6));
  border-radius: 100px; display: flex; align-items: center; justify-content: flex-end;
  padding-right: 6px; font-size: 0.6rem; color: #071208; font-weight: 700;
  transition: width 1s cubic-bezier(0.4,0,0.2,1);
}

/* ── Canvas ──────────────────────────────────────────────────── */
.canvas-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--m); }
.canvas-celda { background: var(--card); border: 1px solid rgba(46,204,87,0.12); border-radius: var(--rl); padding: var(--l); transition: border-color var(--ease); }
.canvas-celda:hover { border-color: rgba(46,204,87,0.28); }
.canvas-nombre { background: linear-gradient(135deg, rgba(30,90,50,0.35) 0%, var(--card) 100%); border-color: rgba(46,204,87,0.22); display: flex; flex-direction: column; justify-content: center; grid-column: 1/4; }
.canvas-7r-resumen { grid-column: auto; grid-row: auto; }
.canvas-metricas { grid-column: 1/3; }
.canvas-celda h3 { font-family: var(--display); font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--v5); margin-bottom: var(--m); }
.canvas-val.grande { font-family: var(--display); font-size: 1.6rem; font-weight: 800; color: var(--v6); line-height: 1.1; margin-bottom: 0.4rem; }
.canvas-celda p { font-size: 0.88rem; color: var(--txt-s); line-height: 1.65; }
.lista-canvas { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.lista-canvas li { font-size: 0.85rem; color: var(--txt-s); line-height: 1.5; }
.canvas-7r-grid { display: flex; flex-direction: column; gap: 0.55rem; }
.c7r-item { display: flex; align-items: center; gap: 0.7rem; font-size: 0.85rem; color: var(--txt-s); padding: 7px 11px; background: rgba(46,204,87,0.06); border-radius: 6px; border: 1px solid rgba(46,204,87,0.1); }
.c7r-num { font-family: var(--display); font-weight: 800; font-size: 0.9rem; color: var(--v6); min-width: 26px; }
.metricas-grid { display: grid; grid-template-columns: repeat(6,1fr); gap: var(--m); }
.metrica-item { text-align: center; padding: var(--m); background: rgba(46,204,87,0.06); border-radius: var(--rm); border: 1px solid rgba(46,204,87,0.12); }
.met-val { font-family: var(--display); font-size: 1.6rem; font-weight: 800; color: var(--v6); line-height: 1; margin-bottom: 0.4rem; }
.met-label { font-size: 0.74rem; color: var(--txt-s); line-height: 1.35; }
.roles-lista { display: flex; flex-direction: column; gap: 0.6rem; }
.rol-item { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.85rem; color: var(--txt-s); line-height: 1.5; }
.rol-ico { flex-shrink: 0; font-size: 1.1rem; }
.rol-item strong { color: var(--v8); }

/* ── Conclusiones ────────────────────────────────────────────── */
.conclusion-lista { display: flex; flex-direction: column; gap: var(--m); }
.concl-item { display: flex; gap: var(--m); align-items: flex-start; }
.concl-num { font-family: var(--display); font-size: 1.5rem; font-weight: 800; color: rgba(46,204,87,0.28); min-width: 40px; line-height: 1; }
.concl-item p { font-size: 0.93rem; color: var(--txt-s); line-height: 1.7; }
.concl-item strong { color: var(--v7); }
.reflexion-box { background: var(--card); border: 1px solid rgba(46,204,87,0.16); border-radius: var(--rl); padding: var(--l); margin-bottom: var(--l); }
.reflexion-box blockquote { border-left: 3px solid var(--v5); padding-left: var(--m); margin-bottom: var(--m); }
.reflexion-box blockquote p { font-family: var(--display); font-size: 1.08rem; font-weight: 600; color: var(--v8); font-style: italic; }
.reflexion-box p { font-size: 0.92rem; color: var(--txt-s); line-height: 1.7; margin-bottom: var(--s); }
.reflexion-box p:last-child { margin-bottom: 0; }
.reflexion-box strong { color: var(--v7); }
.idea-clave { display: flex; gap: var(--m); align-items: flex-start; padding: var(--m) var(--l); background: rgba(46,204,87,0.07); border-radius: var(--rm); border: 1px solid rgba(46,204,87,0.17); }
.idea-ico { font-size: 1.4rem; flex-shrink: 0; }
.idea-clave p { font-size: 0.92rem; color: var(--v8); line-height: 1.65; }

/* ── Footer ──────────────────────────────────────────────────── */
.footer { background: #0e1c12; border-top: 1px solid rgba(46,204,87,0.12); padding: var(--xl) 0; }
.footer-contenido { max-width: 1140px; margin: 0 auto; padding: 0 var(--l); text-align: center; display: flex; flex-direction: column; gap: var(--s); align-items: center; }
.footer-logo { display: flex; align-items: center; gap: 0.5rem; font-family: var(--display); font-weight: 700; color: var(--v7); font-size: 0.98rem; }
.footer-creditos { font-size: 0.85rem; color: var(--txt-t); }
.footer-huella { font-size: 0.8rem; color: #4d7057; }

/* ── Animaciones scroll ──────────────────────────────────────── */
.revelar { opacity: 0; transform: translateY(22px); transition: opacity 0.65s ease, transform 0.65s ease; }
.revelar.visible { opacity: 1; transform: translateY(0); }

/* ── Partículas ──────────────────────────────────────────────── */
#particulas { position: absolute; inset: 0; pointer-events: none; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-obj { grid-template-columns: repeat(2,1fr); }
  .canvas-grid { grid-template-columns: 1fr 1fr; }
  .canvas-7r-resumen { grid-column: auto; grid-row: auto; }
  .canvas-metricas { grid-column: 1/3; }
  .metricas-grid { grid-template-columns: repeat(3,1fr); }
}

@media (max-width: 768px) {
  :root { --xxl: 4rem; --xl: 2.5rem; }
  .nav-hamburger { display: flex; }
  .nav-enlaces {
    position: fixed; top: 64px; left: 0; right: 0; z-index: 999;
    background: rgba(10,24,14,0.98); flex-direction: column;
    padding: var(--l); gap: var(--m); border-bottom: 1px solid rgba(46,204,87,0.15);
    transform: translateY(-110%); transition: transform var(--ease);
  }
  .nav-enlaces.abierto { transform: translateY(0); }
  .nav-enlaces a { font-size: 1.1rem; }
  #nav-principal { padding: 0 var(--m); }
  .grid-2, .grid-3, .grid-obj, .canvas-grid { grid-template-columns: 1fr; }
  .canvas-metricas { grid-column: auto; }
  .metricas-grid { grid-template-columns: repeat(2,1fr); }
  .r-detalle-inner { grid-template-columns: 1fr; }
  .seccion-contenedor { padding: 0 var(--m); }
  .seccion-header { flex-direction: column; gap: var(--s); }
  .seccion-num { font-size: 2.5rem; }
  .titulo-linea1 { font-size: clamp(0.95rem,4.5vw,1.3rem); }
  .titulo-linea2 { font-size: clamp(2.2rem,10vw,3.5rem); }
}

@media (max-width: 480px) {
  .metricas-grid { grid-template-columns: repeat(2,1fr); }
  .chip { font-size: 0.75rem; padding: 4px 10px; }
  .btn-hero { padding: 12px 22px; font-size: 0.9rem; }
  .hero-autores { gap: var(--s); }
}

@media (max-width: 320px) {
  .titulo-linea2 { font-size: 2rem; }
  .metricas-grid { grid-template-columns: 1fr; }
}

/* ── Accesibilidad ───────────────────────────────────────────── */
*:focus-visible { outline: 2px solid var(--v5); outline-offset: 3px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .logo-icono, .btn-flecha { animation: none; }
}

@media (prefers-contrast: high) {
  :root { --v5: #00ff44; --txt-s: #ffffff; }
}

@media print {
  body { background: white !important; color: black !important; }
  #nav-principal, #barra-progreso { display: none; }
  .seccion { padding: 2rem 0; background: white !important; }
}