/**
 * VNPT Enhanced Search Styles - Full Width & Grid Layout
 * Container full width, 4 results per row, beautiful search input
 */

/* ========================================
   VNPT Enhanced Search Styles - Clean & Optimized
   Version: 1.0.8 - Minimal icons, beautiful layout
   ======================================== */

:root {
    /* VNPT Brand Colors */
    --vnpt-primary: #0066CC;
    --vnpt-secondary: #00A8CC;
    --vnpt-accent: #FF6B00;
    --vnpt-dark: #1a365d;
    --vnpt-light: #e8f4fd;

    /* UI Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Typography */
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* ========================================
   BASE LAYOUT
   ======================================== */

.search-page-wrapper {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    min-height: calc(100vh - 200px);
    padding: var(--spacing-xl) 0;
}

.search-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
}

/* ========================================
   SEARCH FORM - Enhanced & Beautiful
   ======================================== */

.search-form-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.search-form-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--vnpt-primary), var(--vnpt-secondary), var(--vnpt-accent));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.search-input-wrapper {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.search-input-group {
    display: flex;
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 4px;
    border: 2px solid transparent;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.search-input-group:focus-within {
    border-color: var(--vnpt-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1), var(--shadow-lg);
    background: var(--bg-primary);
}

.search-input {
    flex: 1;
    padding: 1rem 1.25rem;
    border: none;
    background: transparent;
    font-size: 1.1rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-normal);
}

.search-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.search-input:focus {
    background: var(--bg-primary);
}

.search-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--vnpt-primary), var(--vnpt-secondary));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.search-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #0052a3, #0094b3);
}

.search-btn:hover::before {
    left: 100%;
}

.search-btn:active {
    transform: translateY(0);
}

.search-btn i {
    font-size: 1.1rem;
}

/* ========================================
   SEARCH HISTORY - Cleaner
   ======================================== */

.search-history-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.search-history-title {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.history-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.history-item {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

.history-item:hover {
    background: var(--vnpt-light);
    color: var(--vnpt-primary);
    border-color: var(--vnpt-primary);
    transform: translateY(-1px);
}

/* ========================================
   SEARCH RESULTS HEADER - Cleaner
   ======================================== */

.search-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.results-count {
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.results-query {
    color: var(--vnpt-primary);
    font-weight: var(--font-weight-semibold);
}

.results-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
}

/* ========================================
   SEARCH RESULTS GRID - Optimized
   ======================================== */

.search-results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

/* Responsive grid */
@media (max-width: 1200px) {
    .search-results-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .search-results-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .search-results-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   SEARCH RESULT CARDS - Enhanced
   ======================================== */

.search-result-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.search-result-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--vnpt-primary);
}

.result-thumbnail {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.result-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.search-result-card:hover .result-thumbnail img {
    transform: scale(1.05);
}

.result-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--vnpt-light), var(--bg-tertiary));
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--vnpt-primary);
    text-transform: uppercase;
}

.result-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.result-header {
    margin-bottom: var(--spacing-md);
}

.result-title {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    line-height: 1.4;
}

.result-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.result-title a:hover {
    color: var(--vnpt-primary);
}

.result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
}

.result-type {
    background: var(--vnpt-light);
    color: var(--vnpt-primary);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.5px;
}

.result-excerpt {
    flex: 1;
    margin: var(--spacing-md) 0;
}

.result-excerpt p {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.result-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.result-read-more {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--vnpt-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}

.result-read-more:hover {
    background: var(--vnpt-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.result-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.result-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.result-tag:hover {
    background: var(--vnpt-light);
    color: var(--vnpt-primary);
}

/* ========================================
   NO RESULTS - Improved
   ======================================== */

.no-results {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.no-results-icon {
    margin-bottom: var(--spacing-lg);
}

.large-text {
    font-size: 4rem;
    opacity: 0.3;
}

.no-results h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.no-results p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   SUGGESTIONS - Cleaner
   ======================================== */

.suggestions-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-light);
}

.suggestions-title {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.suggestions-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.suggestions-list li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--spacing-lg);
}

.suggestions-list li::before {
    content: '•';
    color: var(--vnpt-primary);
    font-weight: var(--font-weight-bold);
    position: absolute;
    left: 0;
}

.popular-terms {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.popular-term {
    background: var(--bg-primary);
    color: var(--vnpt-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--vnpt-primary);
    transition: all var(--transition-fast);
}

.popular-term:hover {
    background: var(--vnpt-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   RECENT POSTS - Optimized
   ======================================== */

.recent-posts-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.recent-posts-header {
    margin-bottom: var(--spacing-lg);
}

.recent-posts-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
}

.recent-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.recent-post-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: 1px solid var(--border-light);
}

.recent-post-item:hover {
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.recent-post-thumbnail {
    width: 80px;
    height: 60px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
}

.recent-post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recent-post-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    background: var(--vnpt-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.recent-post-content {
    flex: 1;
    min-width: 0;
}

.recent-post-title {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    line-height: 1.4;
}

.recent-post-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.recent-post-title a:hover {
    color: var(--vnpt-primary);
}

.recent-post-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========================================
   PAGINATION - Enhanced
   ======================================== */

.search-pagination {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
}

.search-pagination .page-numbers {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-xs);
}

.search-pagination .page-numbers li {
    margin: 0;
}

.search-pagination .page-numbers a,
.search-pagination .page-numbers span {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    min-width: 48px;
    height: 48px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}

.search-pagination .page-numbers a:hover {
    background: var(--vnpt-primary);
    color: white;
    border-color: var(--vnpt-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.search-pagination .page-numbers .current {
    background: var(--vnpt-primary);
    color: white;
    border-color: var(--vnpt-primary);
    box-shadow: var(--shadow-md);
}

/* ========================================
   ANIMATIONS & UTILITIES
   ======================================== */

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

@media (max-width: 768px) {
    .search-page-wrapper {
        padding: var(--spacing-lg) 0;
    }

    .search-container {
        padding: 0 var(--spacing-md);
    }

    .search-form-card {
        padding: var(--spacing-lg);
    }

    .search-input-group {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .search-btn {
        justify-content: center;
        width: 100%;
    }

    .search-results-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .result-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }

    .result-read-more {
        text-align: center;
        justify-content: center;
    }

    .recent-posts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .search-form-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }

    .search-input {
        font-size: 1rem;
        padding: 0.875rem 1rem;
    }

    .search-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }

    .history-items {
        justify-content: center;
    }

    .popular-terms {
        justify-content: center;
    }
}

/* ========================================
   PERFORMANCE & LOADING STATES
   ======================================== */

.search-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.search-loading::after {
    content: '';
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--vnpt-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: var(--spacing-sm);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.search-input:focus,
.search-btn:focus,
.result-read-more:focus,
.popular-term:focus,
.history-item:focus {
    outline: 2px solid var(--vnpt-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
        --bg-secondary: #ffffff;
    }
}