/* ==========================================================================
   Premium Footer Design - EineCosmetics B2B
   Japanese Minimalism & Luxury Cosmetics Aesthetic
   Version: 1.0
   ========================================================================== */

/* ==========================================================================
   DESIGN PHILOSOPHY
   - Light, elegant background (not dark/heavy)
   - Clear visual hierarchy with proper spacing
   - Prominent trust signals and certifications
   - Professional contact information
   - Smooth animations and hover effects
   - Mobile-first responsive design
   ========================================================================== */

:root {
    --footer-bg: linear-gradient(180deg, #fafafa 0%, #f5f5f5 100%);
    --footer-border: 1px solid rgba(239, 105, 90, 0.15);
    --footer-shadow: 0 -1px 3px rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   FOOTER BASE - Light Elegant Background
   ========================================================================== */

.site-footer {
    background: var(--footer-bg);
    color: var(--text-primary);
    border-top: var(--footer-border);
    box-shadow: var(--footer-shadow);
    position: relative;
    overflow: hidden;
}

/* Decorative Top Border */
.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-color) 0%,
        #ff9a8b 25%,
        var(--primary-color) 50%,
        #ff9a8b 75%,
        var(--primary-color) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 8s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.footer-wrapper {
    position: relative;
    z-index: 1;
}

/* ==========================================================================
   FOOTER MAIN CONTENT
   ========================================================================== */

.footer-main-content {
    padding: 60px 0 40px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 48px;
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
        gap: 56px;
    }
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ==========================================================================
   COMPANY SECTION
   ========================================================================== */

.footer-brand {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.brand-accent {
    color: var(--primary-color);
}

.company-tagline {
    color: var(--text-secondary);
    margin: 0 0 16px 0;
    font-size: 14px;
    line-height: 1.6;
    max-width: 280px;
}

/* Trust Badges */
.footer-trust-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.trust-badge i {
    color: var(--primary-color);
    font-size: 14px;
}

.trust-badge:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 105, 90, 0.15);
}

/* Contact Information */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.contact-item i {
    color: var(--primary-color);
    font-size: 16px;
    margin-top: 2px;
    min-width: 18px;
}

.phone-link,
.email-link {
    color: inherit;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.phone-link:hover,
.email-link:hover {
    color: var(--primary-color);
}

/* ==========================================================================
   NAVIGATION SECTIONS
   ========================================================================== */

.footer-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    letter-spacing: -0.01em;
    position: relative;
    padding-bottom: 12px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
}

.footer-nav-list,
.quick-links-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-nav-list a,
.quick-links-list a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    border-radius: 4px;
}

.footer-nav-list a:hover,
.quick-links-list a:hover {
    color: var(--primary-color);
    padding-left: 4px;
}

.footer-nav-list a::before,
.quick-links-list a::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.footer-nav-list a:hover::before,
.quick-links-list a:hover::before {
    opacity: 1;
}

.quick-links-list i {
    color: var(--primary-color);
    font-size: 14px;
    min-width: 16px;
}

/* ==========================================================================
   FEATURES SECTION
   ========================================================================== */

.features-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    border-color: rgba(239, 105, 90, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(239, 105, 90, 0.1);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 18px;
    min-width: 20px;
}

.feature-item span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

/* ==========================================================================
   NEWSLETTER SECTION (Optional)
   ========================================================================== */

.footer-newsletter {
    background: linear-gradient(135deg, #fff5f7 0%, #ffe8eb 100%);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid rgba(239, 105, 90, 0.2);
    margin-top: 20px;
}

.footer-newsletter-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
}

.footer-newsletter-description {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 16px;
    line-height: 1.5;
}

.footer-newsletter-form {
    display: flex;
    gap: 10px;
}

.footer-newsletter-input {
    flex: 1;
    padding: 12px 16px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.footer-newsletter-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(239, 105, 90, 0.1);
}

.footer-newsletter-button {
    padding: 12px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.footer-newsletter-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 105, 90, 0.3);
}

/* ==========================================================================
   FOOTER BOTTOM
   ========================================================================== */

.footer-bottom {
    background: white;
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    margin-top: 40px;
}

.footer-bottom-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (min-width: 768px) {
    .footer-bottom-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer-bottom-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

@media (min-width: 768px) {
    .footer-bottom-left {
        align-items: flex-start;
    }
}

.copyright {
    margin: 0;
    color: var(--text-secondary);
    font-size: 13px;
}

.footer-legal-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

@media (min-width: 768px) {
    .footer-legal-links {
        justify-content: flex-start;
    }
}

.footer-legal-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s ease;
}

.footer-legal-links a:hover {
    color: var(--primary-color);
}

/* ==========================================================================
   SOCIAL LINKS
   ========================================================================== */

.footer-bottom-right .social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--bg-gray);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    font-size: 18px;
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(239, 105, 90, 0.3);
}

/* Brand-specific hover colors */
.social-link.facebook:hover {
    background: #1877f2;
    border-color: #1877f2;
}

.social-link.instagram:hover {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    border-color: #e1306c;
}

.social-link.twitter:hover {
    background: #1da1f2;
    border-color: #1da1f2;
}

.social-link.linkedin:hover {
    background: #0077b5;
    border-color: #0077b5;
}

.social-link.youtube:hover {
    background: #ff0000;
    border-color: #ff0000;
}

.social-link.line:hover {
    background: #06c755;
    border-color: #06c755;
}

/* ==========================================================================
   BACK TO TOP BUTTON
   ========================================================================== */

.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(239, 105, 90, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(239, 105, 90, 0.5);
}

.back-to-top i {
    font-size: 20px;
}

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

@media (max-width: 1024px) {
    .footer-main-content {
        padding: 50px 0 35px 0;
    }

    .footer-grid {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .footer-main-content {
        padding: 40px 0 30px 0;
    }

    .footer-grid {
        gap: 32px;
        padding: 0 16px;
    }

    .footer-brand {
        font-size: 22px;
    }

    .footer-title {
        font-size: 15px;
    }

    .company-tagline {
        font-size: 13px;
    }

    .feature-item {
        padding: 12px 14px;
    }

    .contact-item,
    .footer-nav-list a,
    .quick-links-list a {
        font-size: 13px;
    }

    .trust-badge {
        font-size: 11px;
        padding: 6px 12px;
    }

    .social-link {
        width: 38px;
        height: 38px;
        font-size: 16px;
    }

    .footer-newsletter-form {
        flex-direction: column;
    }

    .footer-newsletter-button {
        width: 100%;
    }

    .back-to-top {
        bottom: 16px;
        right: 16px;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        gap: 28px;
    }

    .footer-brand {
        font-size: 20px;
    }

    .footer-trust-badges {
        gap: 8px;
    }

    .trust-badge {
        padding: 5px 10px;
        font-size: 10px;
    }
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

/* Focus States */
.footer-nav-list a:focus,
.quick-links-list a:focus,
.phone-link:focus,
.email-link:focus,
.social-link:focus,
.footer-newsletter-input:focus,
.footer-newsletter-button:focus,
.back-to-top:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .site-footer::before {
        height: 4px;
    }

    .feature-item {
        border-width: 2px;
    }

    .social-link {
        border-width: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .site-footer::before,
    .trust-badge,
    .feature-item,
    .footer-nav-list a,
    .quick-links-list a,
    .social-link,
    .back-to-top {
        animation: none;
        transition: none;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .site-footer {
        background: white !important;
        color: black !important;
        border-top: 1px solid black;
    }

    .site-footer::before {
        display: none;
    }

    .footer-brand,
    .footer-title,
    .feature-item span {
        color: black !important;
    }

    .social-links,
    .back-to-top,
    .footer-newsletter {
        display: none !important;
    }
}