/* File: css/components/footer.css */

/*
 * ============================================
 *  FOOTER STYLES
 * ============================================
 *
 * The footer is a complex, multi-section component:
 *
 * 1. Main footer — 4-column grid with:
 *    - Brand/about column (logo + short description)
 *    - Quick Links column
 *    - Services column
 *    - Contact Info column
 *
 * 2. Newsletter bar — email signup
 *
 * 3. Bottom bar — copyright, legal links, social icons
 *
 * The footer uses CSS Grid for layout and is fully responsive,
 * collapsing from 4 columns → 2 columns → 1 column on smaller screens.
 */


/* ==========================================
   FOOTER WRAPPER
   ========================================== */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

/* Subtle gradient decoration at top of footer */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent-gradient);
}


/* ==========================================
   NEWSLETTER SECTION (top of footer)
   ========================================== */

.footer__newsletter {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.footer__newsletter-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.footer__newsletter-text h3 {
    font-size: var(--fs-xl);
    color: var(--text-heading);
    margin-bottom: var(--space-xs);
}

.footer__newsletter-text p {
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    margin-bottom: 0;
}

/* Newsletter signup form */
.footer__newsletter-form {
    display: flex;
    gap: var(--space-sm);
    max-width: 420px;
    width: 100%;
}

.footer__newsletter-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--fs-sm);
    transition: border-color var(--transition-fast);
    min-width: 0; /* Prevents flex item from overflowing */
}

.footer__newsletter-input::placeholder {
    color: var(--text-secondary);
}

.footer__newsletter-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
}

[data-theme="light"] .footer__newsletter-input:focus {
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}


/* ==========================================
   MAIN FOOTER GRID
   ========================================== */

.footer__main {
    padding: var(--space-3xl) 0;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: var(--space-3xl);
}


/* ---- Brand Column ---- */
.footer__brand-logo {
    font-family: var(--font-mono);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--accent-primary);
    text-decoration: none;
    display: inline-block;
    margin-bottom: var(--space-md);
}

.footer__brand-description {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    max-width: 300px;
}

/* Social icons row in brand column */
.footer__social-links {
    display: flex;
    gap: var(--space-sm);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background: rgba(100, 255, 218, 0.08);
    transform: translateY(-2px);
}

[data-theme="light"] .footer__social-link:hover {
    background: rgba(0, 102, 204, 0.06);
}


/* ---- Link Columns ---- */
.footer__column-title {
    font-size: var(--fs-base);
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: var(--space-lg);
    position: relative;
}

/* Small accent line under column titles */
.footer__column-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
    padding: var(--space-xs) 0;
}

.footer__link:hover {
    color: var(--accent-primary);
    transform: translateX(4px);
}

/* Small arrow that appears on hover */
.footer__link::before {
    content: '';
    width: 0;
    height: 1px;
    background: var(--accent-primary);
    transition: width var(--transition-fast);
}

.footer__link:hover::before {
    width: 12px;
}


/* ---- Contact Info Column ---- */
.footer__contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.footer__contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: rgba(100, 255, 218, 0.08);
    color: var(--accent-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

[data-theme="light"] .footer__contact-icon {
    background: rgba(0, 102, 204, 0.06);
}

.footer__contact-text {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer__contact-text a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer__contact-text a:hover {
    color: var(--accent-primary);
}


/* ==========================================
   BOTTOM BAR (copyright + legal)
   ========================================== */

.footer__bottom {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--border-color);
}

.footer__bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer__copyright {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
}

.footer__copyright a {
    color: var(--accent-primary);
    font-weight: 500;
}

.footer__legal-links {
    display: flex;
    gap: var(--space-lg);
}

.footer__legal-link {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__legal-link:hover {
    color: var(--accent-primary);
}


/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 1024px) {
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .footer__newsletter-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer__newsletter-form {
        max-width: 100%;
    }
}

@media (max-width: 640px) {
    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer__bottom-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer__legal-links {
        justify-content: center;
    }

    .footer__social-links {
        justify-content: center;
    }

    .footer__brand-description {
        max-width: 100%;
    }

    .footer__column-title::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer__links {
        align-items: center;
    }

    .footer__contact-item {
        justify-content: center;
    }
}