/* desktop/07-layout.css - Desktop Layout Component (Header + Footer Structure Only) */

/* === DESKTOP LAYOUT VARIABLES === */
:root {
    /* Desktop header dimensions */
    --desktop-header-height: 80px;
    --desktop-header-padding: 24px;
    --desktop-header-z-index: 1200;
    
    /* Desktop footer dimensions */
    --desktop-footer-padding: 24px 20px;
    --desktop-footer-padding-large: 32px 40px;
    --desktop-footer-margin-top: 40px;
    --desktop-footer-max-width: 1400px;
    --desktop-footer-z-index: 100;
    
    /* Desktop layout spacing */
    --desktop-footer-gap: 16px;
    --desktop-footer-gap-large: 24px;
    
    /* Desktop layout colors */
    --desktop-header-bg: rgba(18, 18, 18, 0.95);
    --desktop-footer-bg: linear-gradient(135deg, rgba(18, 18, 18, 0.95), rgba(24, 24, 24, 0.95));
    --desktop-footer-border: rgba(255, 255, 255, 0.1);
    --desktop-footer-text-primary: rgba(255, 255, 255, 0.8);
    --desktop-footer-text-secondary: rgba(255, 255, 255, 0.6);
    --desktop-footer-link-border: rgba(255, 255, 255, 0.2);
    
    /* Desktop email link dimensions */
    --desktop-email-link-padding: 8px 16px;
    --desktop-email-link-padding-large: 10px 20px;
    --desktop-email-icon-size: 18px;
    --desktop-email-icon-size-large: 20px;
}

/* === DESKTOP SITE HEADER STRUCTURE === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: var(--desktop-header-height);
    background: var(--desktop-header-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--desktop-header-padding);
    z-index: var(--desktop-header-z-index);
    box-sizing: border-box;
    transition: var(--transition-base);
    contain: layout style;
    will-change: transform;
}

/* === DESKTOP LOGO === */
.logo-link {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
    transition: var(--transition-base);
    min-width: 200px;
}

.logo-link:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.logo-link img {
    height: 60px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    border-radius: 8px;
    transition: var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    will-change: transform;
}

.logo-link:hover img {
    transform: scale(1.02) translateZ(0);
}

/* === DESKTOP SITE FOOTER === */
.site-footer {
    background: var(--desktop-footer-bg);
    border-top: 1px solid var(--desktop-footer-border);
    padding: var(--desktop-footer-padding);
    margin-top: var(--desktop-footer-margin-top);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    z-index: var(--desktop-footer-z-index);
    box-sizing: border-box;
    width: 100%;
    contain: layout style;
    margin-bottom: calc(var(--player-height, 80px) + 10px);
}

/* === DESKTOP FOOTER CONTENT === */
.footer-content {
    max-width: var(--desktop-footer-max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--desktop-footer-gap);
    box-sizing: border-box;
    contain: layout style;
}

.footer-bottom {
    flex: 1 1 auto;
    text-align: left;
    min-width: 0;
    overflow: hidden;
}

.copyright {
    font-size: 14px;
    color: var(--desktop-footer-text-secondary);
    margin: 0;
    font-family: var(--font-secondary);
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: 0.25px;
    transition: color var(--transition-base);
}

.copyright:hover {
    color: var(--desktop-footer-text-primary);
}

/* === DESKTOP CONTACT INFO === */
.contact-info {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-current-sm);
}

.email-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--desktop-footer-text-primary);
    text-decoration: none;
    font-size: 14px;
    font-family: var(--font-primary);
    font-weight: 500;
    transition: var(--transition-base);
    padding: var(--desktop-email-link-padding);
    border-radius: 20px;
    border: 1px solid var(--desktop-footer-link-border);
    cursor: pointer;
    will-change: transform;
    position: relative;
    overflow: hidden;
    min-height: 36px;
    box-sizing: border-box;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.email-link:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-1px) translateZ(0);
    box-shadow: 0 4px 12px rgba(29, 185, 84, 0.2);
    background: rgba(29, 185, 84, 0.1);
}

.email-link:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.email-link:active {
    transform: translateY(0) scale(0.98) translateZ(0);
}

.email-link svg {
    width: var(--desktop-email-icon-size);
    height: var(--desktop-email-icon-size);
    fill: currentColor;
    transition: fill var(--transition-base);
    flex-shrink: 0;
}

.email-link:hover svg {
    filter: drop-shadow(0 0 4px rgba(29, 185, 84, 0.5));
}

/* === DESKTOP ADDITIONAL FOOTER ELEMENTS === */
.footer-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-current-md);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--desktop-footer-text-primary);
    text-decoration: none;
    font-size: 14px;
    font-family: var(--font-primary);
    font-weight: 400;
    transition: var(--transition-base);
    padding: var(--spacing-current-xs) var(--spacing-current-sm);
    border-radius: var(--radius-sm);
    line-height: 1.2;
}

.footer-link:hover {
    color: var(--accent-color);
    background: rgba(255, 255, 255, 0.05);
}

.footer-link:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.footer-social {
    display: flex;
    align-items: center;
    gap: var(--spacing-current-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--desktop-footer-text-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    border: 1px solid var(--desktop-footer-link-border);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.social-link:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-1px) translateZ(0);
    box-shadow: 0 2px 8px rgba(29, 185, 84, 0.2);
}

.social-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* === DESKTOP LARGE SCREENS === */
@media (min-width: 1200px) {
    :root {
        --desktop-footer-padding: var(--desktop-footer-padding-large);
        --desktop-footer-gap: var(--desktop-footer-gap-large);
        --desktop-email-link-padding: var(--desktop-email-link-padding-large);
        --desktop-email-icon-size: var(--desktop-email-icon-size-large);
    }
    
    .site-footer {
        padding: var(--desktop-footer-padding);
    }
    
    .footer-content {
        gap: var(--desktop-footer-gap);
    }
    
    .email-link {
        padding: var(--desktop-email-link-padding);
        font-size: 15px;
        min-height: 44px;
    }
    
    .email-link svg {
        width: var(--desktop-email-icon-size);
        height: var(--desktop-email-icon-size);
    }
    
    .copyright {
        font-size: 15px;
    }
    
    .footer-link {
        font-size: 15px;
    }
}

/* === DESKTOP ACCESSIBILITY === */
@media (prefers-contrast: high) {
    .site-header {
        border-bottom: 2px solid white;
        background: black;
    }
    
    .site-footer {
        border-top: 2px solid white;
        background: black;
    }
    
    .email-link,
    .social-link,
    .footer-link {
        border: 2px solid white;
    }
    
    .copyright {
        color: white;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header,
    .logo-link,
    .email-link,
    .social-link,
    .footer-link,
    .copyright {
        transition: none;
        animation: none;
    }
    
    .logo-link:hover,
    .email-link:hover,
    .social-link:hover {
        transform: none;
    }
}

/* === DESKTOP COMPONENT ISOLATION === */
.site-header *,
.site-footer * {
    box-sizing: border-box;
}

.site-header a,
.site-footer a {
    color: inherit;
    text-decoration: none;
}

.site-header button,
.site-footer button {
    font-family: var(--font-primary);
}

/* Force visibility ТОЛЬКО ДЛЯ LAYOUT ЭЛЕМЕНТОВ */
.site-header,
.logo-link,
.site-footer,
.footer-content,
.footer-bottom,
.contact-info,
.email-link,
.copyright {
    display: flex;
    visibility: visible;
    opacity: 1;
}

.footer-bottom,
.copyright {
    display: block;
}

/* === DESKTOP PERFORMANCE OPTIMIZATIONS === */
.site-header,
.site-footer {
    contain: layout style;
    will-change: transform;
}

.footer-content,
.contact-info {
    contain: layout style;
}

.logo-link img,
.email-link,
.social-link {
    will-change: transform;
}

/* === DESKTOP LEGACY SUPPORT === */
@supports not (backdrop-filter: blur(15px)) {
    .site-header {
        background: rgba(18, 18, 18, 0.98);
    }
    
    .site-footer {
        background: rgba(18, 18, 18, 0.98);
    }
    
    .email-link,
    .social-link {
        background: rgba(255, 255, 255, 0.05);
    }
}

/* Fallback for old browsers without CSS custom properties */
@supports not (--css: variables) {
    .site-header {
        height: 80px;
        background: rgba(18, 18, 18, 0.95);
        padding: 0 24px;
        z-index: 1200;
    }
    
    .site-footer {
        background: linear-gradient(135deg, rgba(18, 18, 18, 0.95), rgba(24, 24, 24, 0.95));
        padding: 24px 20px;
        z-index: 100;
    }
    
    .footer-content {
        max-width: 1400px;
        gap: 16px;
    }
    
    .email-link {
        padding: 8px 16px;
        border-radius: 20px;
        color: rgba(255, 255, 255, 0.8);
    }
    
    .copyright {
        color: rgba(255, 255, 255, 0.6);
    }
}