/* ============================================================
   FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--border); background: var(--surface); padding-block: clamp(48px,6vw,72px) 32px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer .brand { margin-bottom: 18px; }
.footer-about { font-size: 14.5px; color: var(--ink-2); max-width: 300px; }
.footer-soc { display: flex; gap: 10px; margin-top: 20px; }
.footer-soc a { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border); display: grid; place-items: center; color: var(--ink-2); transition: all .25s; }
.footer-soc a:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }
.footer-soc svg { width: 18px; height: 18px; }
.footer-col h5 { font-family: var(--font-display); font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14.5px; color: var(--ink-2); padding: 6px 0; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 48px; padding-top: 26px; border-top: 1px solid var(--border); font-size: 13.5px; color: var(--ink-3); }
.footer-credit { text-align: center; padding-top: 14px; font-size: 12.5px; color: var(--ink-3); }
.footer-credit b { font-family: var(--font-display); color: var(--ink-2); }

/* ============================================================
   WHATSAPP FAB
   ============================================================ */
.wa { position: fixed; right: 22px; bottom: 22px; z-index: 90; display: flex; align-items: center; gap: 12px; }
.wa-tip {
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-md);
  border-radius: 14px; padding: 10px 15px; font-size: 13.5px; font-weight: 500;
  opacity: 0; transform: translateX(8px); transition: opacity .3s, transform .3s; pointer-events: none; white-space: nowrap;
}
.wa-tip b { font-family: var(--font-display); display:block; font-size: 13px; }
.wa-tip small { color: var(--ink-3); font-size: 12px; }
.wa:hover .wa-tip { opacity: 1; transform: none; }
.wa-btn {
  width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg,#25d366,#128c4f);
  display: grid; place-items: center; box-shadow: 0 12px 30px -6px rgba(37,211,102,.6); position: relative;
  transition: transform .3s;
}
.wa-btn:hover { transform: scale(1.07); }
.wa-btn svg { width: 30px; height: 30px; color: #fff; }
.wa-btn::before, .wa-btn::after { content:""; position:absolute; inset:0; border-radius:50%; background: #25d366; z-index:-1; animation: breath 2.6s ease-out infinite; }
.wa-btn::after { animation-delay: 1.3s; }
@keyframes breath { 0%{ transform: scale(1); opacity:.5 } 100%{ transform: scale(1.7); opacity:0 } }