/**
 * Header Layout CSS
 * Cho header.php
 * 
 * @package Strongbody_Theme
 */

/* Header Container */
.site-header {
    position: relative;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.site-header.header-top {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

/* Header Content */
.header-content {
    max-width: var(--container-max-width, 1200px);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.header-content.header-top {
    padding: var(--spacing-md) var(--spacing-md);
}

/* Header Row Grid Layout */
.header-row {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: var(--spacing-md);
    width: 100%;
    min-height: 60px;
    height: auto; /* Đảm bảo height tự động */
    max-height: none; /* Loại bỏ max-height cố định */
    overflow: visible; /* Cho phép overflow visible */
}

/* Đảm bảo header actions không bị cắt */
.header-actions {
    grid-column: 4;
    justify-self: end;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
    min-width: 0; /* Cho phép shrink */
    overflow: visible; /* Cho phép overflow visible */
}

/* Header Logo */
.header-logo {
    grid-column: 1;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.header-logo img,
.header-logo svg {
    max-height: 40px;
    width: auto;
}

/* Header Navigation */
.header-navigation {
    grid-column: 2;
    justify-self: center;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

/* Header Menu Toggle */
.header-menu-toggle {
    grid-column: 3;
    justify-self: end;
    display: none; /* Ẩn trên desktop */
}

/* Header Actions */
.header-actions {
    grid-column: 4;
    justify-self: end;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

/* Header Action Buttons */
.header-actions .search-toggle-btn,
.header-actions .theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
    position: relative;
}

/* Theme Toggle Button Dark Mode */
html[data-theme="dark"] .header-actions .theme-toggle-btn {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

html[data-theme="dark"] .header-actions .theme-toggle-btn:hover,
html[data-theme="dark"] .header-actions .theme-toggle-btn:focus {
    background: var(--accent-color-light);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-1px);
    outline: none;
    box-shadow: 0 2px 8px rgba(139, 157, 253, 0.2);
}

/* Search Button Icons */
.header-actions .search-toggle-btn .search-icon {
    display: block;
    opacity: 1;
    transition: all 0.3s ease;
}

.header-actions .search-toggle-btn .close-icon {
    display: none;
    opacity: 0;
    transition: all 0.3s ease;
}

/* Search Button Active State */
.header-actions .search-toggle-btn[aria-expanded="true"] .search-icon {
    display: none;
    opacity: 0;
}

.header-actions .search-toggle-btn[aria-expanded="true"] .close-icon {
    display: block;
    opacity: 1;
}

.header-actions .search-toggle-btn:hover,
.header-actions .search-toggle-btn:focus,
.header-actions .theme-toggle-btn:hover,
.header-actions .theme-toggle-btn:focus {
    background: var(--accent-color-light);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-1px);
    outline: none;
    box-shadow: 0 2px 8px rgba(229, 62, 62, 0.2);
}

.header-actions .search-toggle-btn:active,
.header-actions .theme-toggle-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(229, 62, 62, 0.1);
}

/* Header CTA Button */
.header-actions .header-cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all 0.3s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.header-actions .header-cta-button:hover,
.header-actions .header-cta-button:focus {
    background: var(--accent-color-dark, #c53030);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    outline: none;
}

.header-actions .header-cta-button:active {
    transform: translateY(0);
}

/* Search Overlay */
.header-search-overlay {
    position: absolute; /* Quay lại absolute để mở xuống dưới header */
    top: 100%; /* Mở xuống dưới header */
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 0;
    min-height: 0;
    border-top: 1px solid var(--border-color);
    transform: translateY(-20px);
    max-height: 0;
    overflow: hidden;
    width: 100%;
}

.header-search-overlay.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0); /* Căn giữa khi active */
    max-height: 300px; /* Cho phép expand */
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: 200px;
}

.search-overlay-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    width: 95%; /* Tăng width */
    max-width: 800px; /* Tăng max-width */
    transform: scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    opacity: 0;
    margin: 0; /* Loại bỏ margin auto vì đã dùng flexbox */
}

.header-search-overlay.active .search-overlay-content {
    transform: scale(1);
    opacity: 1;
}

/* Đảm bảo search overlay không tạo internal scroll */
.header-search-overlay {
    overflow: hidden;
}

.header-search-overlay.active {
    overflow: visible;
}

/* Đảm bảo main content được đẩy xuống khi search mở */
.site-header.search-active {
    margin-bottom: 0;
}

/* Đảm bảo body không có internal scroll */
body.search-overlay-open {
    overflow: auto !important;
}

/* Đảm bảo search overlay mở đúng vị trí */
.site-header {
    position: relative !important;
    z-index: 1000 !important;
}

.header-search-overlay {
    position: absolute !important;
    z-index: 1001 !important;
    /* Đảm bảo căn giữa hoàn hảo */
    left: 50% !important;
    transform: translateX(-50%) translateY(-20px) !important;
    width: 100vw !important; /* Sử dụng viewport width */
    max-width: 100vw !important;
}

.search-input-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.header-search-field {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--text-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.header-search-field:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--accent-color-light);
}

.header-search-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--accent-color);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.header-search-submit:hover,
.header-search-submit:focus {
    background: var(--accent-color-dark, #c53030);
    transform: scale(1.05);
    outline: none;
}

.search-suggestions {
    text-align: center;
}

.search-hint {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .header-row {
        gap: var(--spacing-sm);
    }
    
    .header-actions {
        gap: var(--spacing-xs);
    }
    
    .header-actions .header-cta-button {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--text-xs);
    }
    
    /* Đảm bảo header content không bị cắt */
    .header-content {
        padding: 0 var(--spacing-sm);
        overflow: visible;
    }
}

@media (max-width: 900px) {
    .header-row {
        gap: var(--spacing-xs);
    }
    
    .header-actions {
        gap: var(--spacing-xs);
    }
    
    /* Giảm padding để tránh cắt */
    .header-content {
        padding: 0 var(--spacing-xs);
    }
}

@media (max-width: 768px) {
    .header-navigation {
        display: none; /* Ẩn navigation trên mobile */
    }
    
    .header-row {
        grid-template-columns: auto auto auto;
        gap: var(--spacing-sm);
    }
    
    .header-menu-toggle {
        display: flex; /* Hiện menu toggle trên mobile */
        grid-column: 2;
    }
    
    .header-actions {
        grid-column: 3;
        gap: var(--spacing-xs);
    }
    
    .header-actions .header-cta-button {
        display: none; /* Ẩn CTA button trên mobile */
    }
    
    .header-content.header-top {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .header-row {
        grid-template-columns: auto auto;
        gap: var(--spacing-xs);
    }
    
    .header-logo {
        grid-column: 1;
    }
    
    .header-menu-toggle {
        grid-column: 2;
    }
    
    .header-actions {
        display: none; /* Ẩn tất cả actions trên mobile nhỏ */
    }
    
    .header-content {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content.header-top {
        padding: var(--spacing-sm);
    }
}

/* Header Scroll Animation */
.site-header.header-scrolled {
    position: fixed;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    box-shadow: var(--shadow-md);
}

.site-header.header-scrolled .header-content {
    padding: var(--spacing-sm) var(--spacing-md);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .site-header.header-top {
        background: rgba(17, 24, 39, 0.95);
        border-bottom-color: rgba(55, 65, 81, 0.2);
    }
    
    .header-actions .search-toggle-btn,
    .header-actions .theme-toggle-btn {
        background: var(--bg-dark);
        border-color: var(--border-color);
        color: var(--text-light);
    }
}

/* Accessibility */
.header-actions button:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .site-header {
        border-bottom: 2px solid currentColor;
    }
    
    .header-actions button {
        border: 2px solid currentColor;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .site-header,
    .header-actions button,
    .header-search-overlay,
    .search-overlay-content {
        transition: none;
    }
}