/*
 * Hidrocarburos del Norte — Footer
 * Depende de tokens.css + base.css.
 */

.site-footer {
  background-color: var(--color-petroleum-900);
  color: var(--color-limestone-200);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
@media (max-width: 820px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .footer__grid { grid-template-columns: 1fr; gap: var(--space-8); } }

/* Columna de marca */
.footer__brand-logo {
  height: 56px; width: auto; margin-bottom: var(--space-4);
  filter:
    drop-shadow(0 0 2px rgba(255,255,255,.95))
    drop-shadow(0 0 4px rgba(255,255,255,.85))
    drop-shadow(0 0 7px rgba(255,255,255,.55))
    drop-shadow(0 1px 2px rgba(0,0,0,.45));
}
.footer__tagline { color: var(--color-slate-400); font-size: var(--text-sm); max-width: 34ch; line-height: var(--leading-normal); }

.footer__social { display: flex; gap: var(--space-3); margin-top: var(--space-5); }
.footer__social a {
  width: 40px; height: 40px; border-radius: var(--radius-md);
  display: grid; place-items: center;
  background: rgba(255,255,255,.06); border: 1px solid var(--border);
  color: var(--color-limestone-200);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}
/* Hover: fondo dorado + icono petróleo (specificity alta para ganarle a .footer__col a:hover) */
.footer__col .footer__social a:hover,
.footer__social a:hover { background: var(--accent); color: var(--color-petroleum-800); transform: translateY(-2px); }
.footer__social a svg { color: inherit; }
.footer__social svg { width: 20px; height: 20px; }

/* Columnas de texto */
.footer__col h4 {
  font-family: var(--font-mono); font-size: var(--text-xs); font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-widest); text-transform: uppercase;
  color: var(--accent); margin-bottom: var(--space-4);
}
.footer__col address { font-style: normal; color: var(--color-slate-400); font-size: var(--text-sm); line-height: var(--leading-loose); }
.footer__col address strong { display: block; color: var(--color-limestone-100); font-weight: var(--weight-bold); margin-bottom: var(--space-1); }
.footer__col a { color: var(--color-slate-400); }
.footer__col a:hover { color: var(--accent); }

.footer__links { display: flex; flex-direction: column; gap: var(--space-2); }
.footer__links a { color: var(--color-limestone-200); font-size: var(--text-sm); }
.footer__links a:hover { color: var(--accent); }

/* Barra inferior */
.footer__bottom {
  margin-top: var(--space-12); padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-4);
  flex-wrap: wrap;
  color: var(--color-slate-500); font-size: var(--text-xs); font-family: var(--font-mono);
  letter-spacing: var(--tracking-wide);
}
.footer__bottom a { color: var(--color-slate-500); }
.footer__bottom a:hover { color: var(--accent); }

/* ═══════════════════════════ WIDGET DE WHATSAPP ═══ */
:root { --wa-green: #25D366; --wa-green-dark: #1da851; --wa-teal: #075E54; }

.wa { position: fixed; right: clamp(16px, 4vw, 28px); bottom: clamp(16px, 4vw, 28px); z-index: var(--z-modal); }

.wa__fab {
  position: relative; width: 60px; height: 60px; border-radius: 50%;
  background: var(--wa-green); color: #fff; display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, .45), 0 2px 8px rgba(0,0,0,.2);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.wa__fab:hover { transform: scale(1.06); }
.wa__fab svg { width: 32px; height: 32px; }
.wa__fab-badge {
  position: absolute; top: -2px; right: -2px; min-width: 20px; height: 20px; padding: 0 5px;
  background: var(--color-danger); color: #fff; border-radius: var(--radius-pill);
  font-family: var(--font-mono); font-size: 11px; font-weight: var(--weight-bold);
  display: grid; place-items: center; border: 2px solid var(--bg);
}
.wa.is-open .wa__fab-badge { display: none; }
.wa__fab::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid var(--wa-green); animation: wa-pulse 2.2s ease-out infinite;
}
.wa.is-open .wa__fab::after { display: none; }
@keyframes wa-pulse { 0% { transform: scale(1); opacity: .7; } 100% { transform: scale(1.7); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .wa__fab::after { animation: none; } }

.wa__panel {
  position: absolute; right: 0; bottom: 74px; width: min(340px, calc(100vw - 32px));
  background: var(--surface-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg);
  transform-origin: bottom right; animation: wa-in var(--transition-base);
}
@keyframes wa-in { from { opacity: 0; transform: translateY(12px) scale(.96); } to { opacity: 1; transform: none; } }

.wa__head { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); background: var(--wa-teal); color: #fff; }
.wa__avatar { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,.15); display: grid; place-items: center; flex-shrink: 0; }
.wa__avatar svg { width: 24px; height: 24px; }
.wa__head-text { display: flex; flex-direction: column; line-height: 1.25; flex: 1; }
.wa__head-text strong { font-size: var(--text-sm); }
.wa__head-text span { font-size: var(--text-xs); color: rgba(255,255,255,.8); display: flex; align-items: center; gap: 6px; }
.wa__dot { width: 8px; height: 8px; border-radius: 50%; background: #4ade80; display: inline-block; }
.wa__close { color: rgba(255,255,255,.85); width: 28px; height: 28px; display: grid; place-items: center; border-radius: var(--radius-sm); }
.wa__close:hover { background: rgba(255,255,255,.15); color: #fff; }
.wa__close svg { width: 18px; height: 18px; }

.wa__body { padding: var(--space-5); background: var(--bg-alt); }
.wa__bubble {
  background: var(--surface-card); border: 1px solid var(--border);
  padding: var(--space-3) var(--space-4); border-radius: 4px 16px 16px 16px;
  font-size: var(--text-sm); color: var(--text-primary); box-shadow: var(--shadow-sm); max-width: none;
}
.wa__chips { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-4); }
.wa__chip {
  text-align: left; padding: var(--space-3) var(--space-4);
  background: var(--surface-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  font-size: var(--text-sm); color: var(--text-primary); font-weight: var(--weight-medium);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.wa__chip:hover, .wa__chip.is-active { border-color: var(--wa-green); background: rgba(37,211,102,.08); }

.wa__foot { padding: var(--space-4) var(--space-5); background: var(--surface-card); border-top: 1px solid var(--border); }
.wa__send {
  width: 100%; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-5); background: var(--wa-green); color: #fff;
  border-radius: var(--radius-md); font-weight: var(--weight-bold); font-size: var(--text-sm);
  transition: background-color var(--transition-fast);
}
.wa__send:hover { background: var(--wa-green-dark); }
.wa__send svg { width: 20px; height: 20px; }