.footer { position: relative; z-index: 2; width: 100%; box-sizing: border-box; border-top: 1px solid var(--border); padding: 3.5rem 5vw 0; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid var(--border); }
.footer-brand { display: flex; flex-direction: column; gap: 0.9rem; }
.footer-logo { font-family: var(--font-mono); font-size: 1.4rem; color: var(--text); letter-spacing: 1px; }
.footer-tagline { font-size: 0.9rem; color: var(--text-mid); max-width: 360px; line-height: 1.6; }
.footer-location { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-dim); display: flex; align-items: center; gap: 0.4rem; }
.footer-socials { display: flex; gap: 0.75rem; margin-top: 0.25rem; }
.footer-socials a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-dim); font-size: 0.95rem; text-decoration: none; transition: var(--tr); }
.footer-socials a:hover { color: var(--purple-l); border-color: var(--border-h); box-shadow: 0 0 10px var(--glow); }
.footer-col-title { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 1rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { font-size: 0.85rem; color: var(--text-mid); text-decoration: none; transition: var(--tr); display: flex; align-items: center; gap: 0.4rem; }
.footer-col a:hover { color: var(--purple-l); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 1.2rem 0 1.5rem; flex-wrap: wrap; gap: 1rem; }
.footer-copy { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-dim); }
.back-to-top { width:36px; height:36px; background:transparent; border:1px solid rgba(249,115,22,0.35); cursor:pointer; padding:0; flex-shrink:0; display:flex; align-items:center; justify-content:center; clip-path:polygon(50% 0%,100% 30%,100% 100%,0% 100%,0% 30%); transition:border-color 0.2s,box-shadow 0.2s; }
.back-to-top::before { display:none; }
.back-to-top::after { content:'⌃'; font-size:1.1rem; color:rgba(249,115,22,0.7); line-height:1; transition:color 0.2s; }
.back-to-top:hover { border-color:#f97316; box-shadow:0 0 14px rgba(249,115,22,0.35); }
.back-to-top:hover::after { color:#f97316; }
@media (max-width: 768px) { .footer-top { grid-template-columns: 1fr; gap: 2rem; } .footer-bottom { flex-direction: column; align-items: flex-start; } }