/* kuhn-labs platform chrome — vendored from tehkuhnz-blog (canonical brand). */

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 36px;
    position: relative;
    z-index: 1;
}

/* ==========================================================================
   Site header
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(10, 15, 23, 0.72);
    border-bottom: 1px solid var(--border-soft);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
}

.brand-mark {
    width: 38px;
    height: 38px;
    background: url('../images/brand/kuhn-labs-mark.svg') center / contain no-repeat;
    color: transparent;
    border-radius: 10px;
    overflow: hidden;
    text-indent: -9999px;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.08) inset,
        0 10px 24px rgba(107, 164, 248, 0.20),
        0 0 22px rgba(62, 232, 164, 0.10);
}

.brand-name {
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.01em;
}

.brand-name .dim {
    color: var(--text-muted);
    font-weight: 400;
    margin-left: 6px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-left: auto;
}

.main-nav ul {
    display: flex;
    gap: 6px;
    list-style: none;
}

.main-nav a {
    display: inline-block;
    font-size: 13px;
    color: var(--text-dim);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.main-nav a:hover { color: var(--text); }

.main-nav a.active {
    color: var(--text);
    background: var(--panel-hi);
}

.nav-social-icons {
    display: flex;
    align-items: center;
    gap: 4px;
    padding-left: 16px;
    border-left: 1px solid var(--border-soft);
    margin-left: 4px;
}

.nav-social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.nav-social-icons a:hover {
    color: var(--accent);
    background: var(--panel-hi);
}

.nav-social-icons svg { width: 16px; height: 16px; }

.header-actions { display: flex; align-items: center; gap: 8px; }

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 8px;
    background: transparent;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--text-dim);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ==========================================================================
   Site footer
   ========================================================================== */

.site-footer {
    border-top: 1px solid var(--border-soft);
    padding: 24px 0 32px;
    position: relative;
    z-index: 1;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.04em;
}

.footer-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-info .brand-mark { width: 22px; height: 22px; font-size: 12px; border-radius: 5px; }

.footer-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.footer-status .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 10px var(--green);
}

.footer-trust {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-trust a {
    color: var(--text-muted);
    transition: color var(--transition);
}

.footer-trust a:hover { color: var(--accent); }

.footer-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    background: var(--panel-hi);
}

.footer-links svg { width: 15px; height: 15px; }

/* ==========================================================================
   Responsive — header / nav / footer / container
   ========================================================================== */

@media (max-width: 980px) {
    .container { padding: 0 24px; }
}

@media (max-width: 768px) {
    .header-content { gap: 12px; }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: var(--bg);
        border-bottom: 1px solid var(--border-soft);
        padding: 18px 24px 24px;
        gap: 14px;
        margin-left: 0;
        transform: translateY(-110%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    }

    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .main-nav a {
        padding: 10px 12px;
        font-size: 14px;
    }

    .nav-social-icons {
        padding-left: 0;
        border-left: none;
        padding-top: 14px;
        border-top: 1px solid var(--border-soft);
        margin-left: 0;
    }

    .mobile-menu-toggle { display: flex; }

    .footer-content { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .container { padding: 0 18px; }
    .brand-name .dim { display: none; }
    .nav-social-icons a { width: 36px; height: 36px; }
    .nav-social-icons svg { width: 18px; height: 18px; }
}