/**
 * Millennials Portfolio Website - Footer Component
 * File: static/css/footer.css
 * Purpose: Minimal, calm, and accessible site footer adhering to the
 *          Glassmorphism design system.
 */

/* -----------------------------------------------------------------------------
   1. Site Footer Base Glass Container
   ----------------------------------------------------------------------------- */
.site-footer {
    width: 100%;
    background-color: var(--section-bg-footer, #182806);
    backdrop-filter: var(--glass-blur-backdrop-lg);
    -webkit-backdrop-filter: var(--glass-blur-backdrop-lg);
    border-top: 1px solid rgba(187, 207, 141, 0.30);
    box-shadow: 0 -4px 24px rgba(0, 36, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    padding-top: var(--space-10);
    padding-bottom: var(--space-8);
    position: relative;
    z-index: 10;
}

.footer-container {
    display: flex;
    flex-direction: column;
}

/* -----------------------------------------------------------------------------
   2. Main Area: Multi-Column Grid (Brand, Nav, Contact, Legal)
   ----------------------------------------------------------------------------- */
.footer-main {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1.3fr 1.1fr;
    gap: var(--space-8);
    align-items: start;
    padding-bottom: var(--space-9);
}

/* Brand Column */
.footer-brand-col {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    padding: 2px 0;
    border-radius: var(--radius-sm);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.footer-brand:hover {
    opacity: 0.9;
    transform: translateY(-0.5px);
}

.footer-brand:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

.footer-brand-logo {
    height: 38px;
    width: auto;
    max-height: 44px;
    object-fit: contain;
    display: block;
    margin-bottom: var(--space-3);
    transition: transform var(--transition-fast);
}

.footer-tagline {
    margin-top: 10px;
    margin-bottom: 12px;
    font-family: var(--font-secondary);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-body);
    color: var(--color-primary-light, #BBCF8D);
}

.footer-brand-desc {
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    line-height: 1.6;
    color: #A3B580;
    margin: 0;
}

/* Footer Section Column Styling */
.footer-col,
.footer-navigation {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
    align-items: flex-start;
}

.footer-col-title {
    font-family: var(--font-primary);
    font-size: 0.8125rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary-light, #BBCF8D);
    margin: 0 0 var(--space-4) 0;
}

.footer-links-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.footer-nav-link,
.footer-link-item {
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    color: #DFE3D6;
    text-decoration: none;
    padding: 4px 0;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer-nav-link:hover,
.footer-link-item:hover {
    color: #FFFFFF;
    transform: translateX(2px);
}

.footer-nav-link:focus-visible,
.footer-link-item:focus-visible {
    outline: 2px solid var(--color-primary-light, #BBCF8D);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
    color: #FFFFFF;
}

/* Contact Block */
.footer-contact-group {
    display: flex;
    flex-direction: column;
    gap: 14px;
    width: 100%;
}

.footer-contact-entry {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.footer-contact-entry-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #7B904B;
    font-weight: 700;
}

.footer-contact-entry-val {
    font-size: 13.5px;
    color: #FFFFFF;
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-contact-entry-val:hover {
    color: var(--color-primary-light, #BBCF8D);
    text-decoration: underline;
}
    outline: 2px solid var(--color-primary-light, #BBCF8D);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
    color: #FFFFFF;
}

/* -----------------------------------------------------------------------------
   3. Bottom Bar: Thin Divider, Copyright & Glass Back to Top
   ----------------------------------------------------------------------------- */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(187, 207, 141, 0.20);
    gap: var(--space-4);
}

.footer-copyright {
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    color: var(--color-primary-light, #BBCF8D);
    line-height: 1.5;
    margin: 0;
}

.footer-back-to-top {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-medium);
    color: #DFE3D6;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.10);
    backdrop-filter: var(--glass-blur-backdrop-sm);
    -webkit-backdrop-filter: var(--glass-blur-backdrop-sm);
    border: 1px solid rgba(187, 207, 141, 0.35);
    box-shadow: 0 4px 16px rgba(0, 36, 0, 0.20);
    transition: color var(--transition-fast), 
                background-color var(--transition-fast), 
                border-color var(--transition-fast),
                box-shadow var(--transition-fast),
                transform var(--transition-fast);
}

.footer-back-to-top-arrow {
    display: inline-block;
    font-size: 1.05rem;
    line-height: 1;
    transition: transform var(--transition-fast);
}

.footer-back-to-top:hover {
    color: #FFFFFF;
    background-color: rgba(187, 207, 141, 0.25);
    border-color: var(--color-primary-light, #BBCF8D);
    box-shadow: 0 6px 20px rgba(0, 36, 0, 0.30);
    transform: translateY(-2px);
}

.footer-back-to-top:hover .footer-back-to-top-arrow {
    transform: translateY(-2px);
}

.footer-back-to-top:focus-visible {
    outline: 2px solid var(--color-primary-light, #BBCF8D);
    outline-offset: 2px;
    color: #FFFFFF;
}

/* -----------------------------------------------------------------------------
   4. Responsive Adjustments
   ----------------------------------------------------------------------------- */
/* Tablet Breakpoint (<= 1024px) */
@media (max-width: 1024px) {
    .site-footer {
        padding-top: var(--space-8);
        padding-bottom: var(--space-6);
    }

    .footer-main {
        grid-template-columns: 1.5fr 1fr;
        gap: var(--space-8) var(--space-6);
        padding-bottom: var(--space-8);
    }
}

/* Mobile Breakpoint (<= 768px) */
@media (max-width: 768px) {
    .site-footer {
        padding-top: var(--space-8);
        padding-bottom: var(--space-6);
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        padding-bottom: var(--space-6);
    }

    .footer-brand-col {
        max-width: 100%;
    }

    .footer-bottom {
        flex-direction: column-reverse;
        align-items: flex-start;
        gap: var(--space-4);
        padding-top: var(--space-5);
    }

    .footer-back-to-top {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
        padding: 8px 16px;
    }
}

/* Small Mobile Breakpoint (<= 480px) */
@media (max-width: 480px) {
    .footer-nav-links {
        gap: 8px 14px;
    }

    .footer-nav-link {
        font-size: var(--font-size-small);
    }

    .footer-copyright {
        font-size: var(--font-size-tiny);
    }
}

/* -----------------------------------------------------------------------------
   5. Accessibility: Respect User Reduced Motion Preferences
   ----------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    .footer-back-to-top:hover,
    .footer-back-to-top:hover .footer-back-to-top-arrow {
        transform: none;
    }
}