/* ============================================================
   4d3 — Componentes.
   Todos consumen var(--accent) / var(--accent-dark), que definen
   las utilidades de triada. Sin colores literales.
   ============================================================ */

/* === Triada rotativa (INVARIANTE 1) ===
   Manual: .accent-1 / .accent-2 / .accent-3
   Automática: añade .triad al contenedor y los hijos rotan
   verde → azul → coral, reiniciando en el 4º. */
.accent-1 { --accent: var(--pastel-green); --accent-dark: var(--dark-green); }
.accent-2 { --accent: var(--pastel-blue);  --accent-dark: var(--dark-blue);  }
.accent-3 { --accent: var(--pastel-coral); --accent-dark: var(--dark-coral); }

.triad > :nth-child(3n + 1) { --accent: var(--pastel-green); --accent-dark: var(--dark-green); }
.triad > :nth-child(3n + 2) { --accent: var(--pastel-blue);  --accent-dark: var(--dark-blue);  }
.triad > :nth-child(3n)     { --accent: var(--pastel-coral); --accent-dark: var(--dark-coral); }

/* === Botón — efecto firma: relleno scanline que entra desde la izquierda === */
.btn {
  --accent: var(--pastel-green);
  --accent-dark: var(--dark-green);
  position: relative;
  isolation: isolate;
  display: inline-block;
  overflow: hidden;
  padding: 0.9rem 2.2rem;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  text-decoration: none;
  text-align: center;
  color: var(--accent-dark);
  background: transparent;
  border: var(--border-btn) solid var(--accent);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--micro);
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  left: -100%;
  z-index: -1;
  background: repeating-linear-gradient(0deg,
    var(--accent) 0px, var(--accent) 3px,
    var(--accent-dark) 3px, var(--accent-dark) 6px);
  transition: left var(--micro);
}
.btn:hover { color: var(--white); }
.btn:hover::before { left: 0; }
/* Sin estado de pulsación que encoja; focus ring del navegador intacto. */

/* Variante para fondos oscuros */
.btn--light { color: var(--white); }

/* === Card (servicios, proyectos) === */
.card {
  position: relative;
  padding: 2.5rem 2rem;
  background: var(--white);
  border: var(--border-thin);
  border-radius: var(--radius);
  transition: transform var(--micro), box-shadow var(--micro);
}
.card::before {
  /* barra lateral de 4px que crece de 0 a 100% */
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 4px;
  height: 0;
  background: var(--accent);
  transition: height var(--micro);
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); }
.card:hover::before { height: 100%; }
.card h3 { margin-bottom: 0.75rem; }
.card p { color: var(--gray-mid); font-size: var(--text-small); }

/* === Icono en rombo (INVARIANTE 7: contra-rotación -45°) === */
.rhombus-icon {
  width: 56px;
  height: 56px;
  margin: 0.5rem 0 2rem 0.5rem;
  display: grid;
  place-items: center;
  border: 2px solid var(--accent);
  rotate: 45deg;
}
.rhombus-icon > * { rotate: -45deg; color: var(--accent-dark); }
.rhombus-icon svg, .rhombus-icon i { width: 22px; height: 22px; }

/* === Nav (fija arriba; JS añade .scrolled) === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  transition: background var(--micro), box-shadow var(--micro);
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-nav);
}
.nav-logo img { height: 36px; display: block; }
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  text-decoration: none;
  color: var(--accent-dark);
  transition: color var(--micro);
}
.nav-links a:hover { color: var(--accent); }
@media (max-width: 768px) {
  .nav.scrolled { backdrop-filter: none; background: rgba(255, 255, 255, 0.94); }
}

/* === Stats (15+ Proyectos · 100% Impacto social · ∞ Compromiso) === */
.stat { text-align: center; }
.stat-value {
  font-family: var(--font-mono);
  font-size: var(--text-stat);
  color: var(--accent-dark);
  line-height: 1.1;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--gray-mid);
}

/* === Glassmorphism (INVARIANTE 9: solo fondos oscuros/cargados,
       desactivado en móvil) === */
.glass-dark {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.glass-light {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  border: var(--border-thin);
}
@media (max-width: 768px) {
  .glass-dark  { backdrop-filter: none; background: rgba(255, 255, 255, 0.08); }
  .glass-light { backdrop-filter: none; background: rgba(255, 255, 255, 0.94); }
}

/* Card de valores (sección oscura): .value-card.glass-dark */
.value-card { padding: 2.5rem 2rem; }
.value-card h3 { margin: 1.5rem 0 0.75rem; }
.value-card p { opacity: 0.8; font-size: var(--text-small); }

/* === Precio === */
.pricing-card { padding: 3rem 2.5rem; text-align: center; }
.pricing-amount {
  font-family: var(--font-mono);
  font-size: var(--text-price);
  color: var(--dark-blue);
  line-height: 1.1;
}
.pricing-features {
  list-style: none;
  text-align: left;
  margin: 2.5rem 0;
}
.pricing-features li {
  position: relative;
  padding: 0.6rem 0 0.6rem 1.75rem;
  border-bottom: var(--border-thin);
}
.pricing-features li:last-child { border-bottom: none; }
.pricing-features li::before {
  content: '◇';
  position: absolute;
  left: 0;
  color: var(--pastel-blue);
}
.pricing-note {
  font-size: var(--text-label);
  color: var(--gray-mid);
  margin-top: 1.5rem;
}

/* === Modal (portfolio de proyectos) === */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--micro);
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }
.modal {
  width: min(720px, calc(100% - 2rem));
  max-height: 85vh;
  overflow: auto;
  background: var(--white);
  padding: 3rem 2.5rem;
  border-radius: var(--radius-small);
}
.modal-close {
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-mid);
}
@media (max-width: 768px) { .modal-overlay { backdrop-filter: none; } }

/* === Footer === */
.footer {
  padding: 3rem 2rem;
  background: var(--off-white);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--gray-mid);
}
.footer a { color: var(--gray-mid); text-decoration: none; transition: color var(--micro); }
.footer a:hover { color: var(--pastel-blue); }
.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
}

/* === Banner de cookies (fijo abajo-centro) === */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  translate: -50% 0;
  z-index: 500;
  width: min(560px, calc(100% - 2rem));
  padding: 1rem 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  border: var(--border-thin);
  border-radius: var(--radius-small);
  box-shadow: var(--shadow-card);
  font-family: var(--font-mono);
  font-size: var(--text-label);
}