/* ============================================================
   into3.ai — STANDARD SITE FOOTER
   Shared by every page. All selectors are prefixed `sf-` so
   they never collide with page-local `footer` / `.footer-*` CSS.
   ============================================================ */

footer.sf {
    /* Hard reset: neutralise page-local bare `footer { ... }` rules */
    display: block;
    max-width: none;
    width: auto;
    margin: 0;
    padding: 0;
    text-align: left;
    flex-direction: row;
    justify-content: flex-start;
    align-items: stretch;
    gap: 0;

    background: #080810;
    border-top: 1px solid #151520;
    position: relative;
    z-index: 5;
    color: #fff;
    font-family: 'Helvetica Neue', Arial, Helvetica, sans-serif;
    -webkit-font-smoothing: antialiased;
}

.sf .sf-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 50px;
}

/* ---------- Newsletter ---------- */
.sf .sf-newsletter {
    padding: 50px 0 40px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.sf .sf-nl-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px;
    letter-spacing: normal;
}
.sf .sf-nl-sub {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    color: #555;
    margin: 0 0 24px;
}
.sf .sf-nl-form {
    display: flex;
    justify-content: center;
    gap: 0;
    max-width: 480px;
    margin: 0 auto;
}
.sf .sf-nl-input {
    flex: 1;
    min-width: 0;
    padding: 14px 20px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-right: none;
    border-radius: 8px 0 0 8px;
    color: #ccc;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    outline: none;
    transition: border-color 0.3s;
}
.sf .sf-nl-input::placeholder { color: #444; }
.sf .sf-nl-input:focus { border-color: rgba(138,43,226,0.4); }
.sf .sf-nl-btn {
    padding: 14px 28px;
    background: linear-gradient(135deg,#6a1b9a,#8a2be2);
    border: none;
    border-radius: 0 8px 8px 0;
    color: #fff;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
}
.sf .sf-nl-btn:hover { background: linear-gradient(135deg,#7b1fa2,#9c27b0); }

/* ---------- Link columns ---------- */
.sf .sf-columns {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding: 50px 0 40px;
}
.sf .sf-col-title {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: 18px;
}
.sf .sf-col a {
    display: block;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    color: #555;
    text-decoration: none;
    padding: 5px 0;
    transition: color 0.3s;
}
.sf .sf-col a:hover,
.sf .sf-col a:focus-visible { color: #8a2be2; }

/* ---------- Connect column ---------- */
.sf .sf-contact-line {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    color: #555;
    margin-bottom: 8px;
    line-height: 1.5;
}
.sf .sf-contact-icon { font-size: 14px; line-height: 1.4; }
.sf .sf-contact-line a { display: inline; padding: 0; }

.sf .sf-socials {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}
.sf .sf-social-icon {
    width: 36px;
    height: 36px;
    flex: none;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.02);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    color: #555;
    text-decoration: none;
    transition: all 0.3s;
}
.sf .sf-social-icon:hover,
.sf .sf-social-icon:focus-visible {
    border-color: rgba(138,43,226,0.4);
    color: #8a2be2;
    background: rgba(138,43,226,0.06);
}
.sf .sf-social-icon svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: fill 0.3s;
}

/* ---------- Bottom bar ---------- */
.sf .sf-bottom {
    padding: 30px 0;
    border-top: 1px solid rgba(255,255,255,0.04);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}
.sf .sf-logo-area {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
}
.sf .sf-logo {
    display: block;
    line-height: 0;
    text-decoration: none;
}
.sf .sf-logo img {
    height: 26px;
    width: auto;
    display: block;
    margin: 0;
}
.sf .sf-tagline {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 9px;
    color: #333;
    letter-spacing: 2px;
}
.sf .sf-copy {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 10px;
    color: #333;
    letter-spacing: 1px;
    margin: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .sf .sf-columns { grid-template-columns: 1fr 1fr; gap: 30px; }
    .sf .sf-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .sf .sf-logo-area { align-items: center; }
    .sf .sf-inner { padding: 0 28px; }
}
@media (max-width: 600px) {
    .sf .sf-inner { padding: 0 20px; }
    .sf .sf-nl-form { flex-direction: column; gap: 10px; }
    .sf .sf-nl-input { border-right: 1px solid rgba(255,255,255,0.08); border-radius: 8px; }
    .sf .sf-nl-btn { border-radius: 8px; }
}
@media (max-width: 500px) {
    .sf .sf-columns { grid-template-columns: 1fr; }
}