/**
 * Alternative styles for Science Fiction Inventions Explorer
 * A light, modern, and clean design approach
 */

:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --accent-color: #f39c12;
    --light-color: #f8f9fa;
    --dark-color: #2c3e50;
    --text-color: #34495e;
    --border-color: #e9ecef;
    --card-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --card-radius: 16px;
}

/* Base styles */
body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    background-color: #f5f7fa;
    color: var(--text-color);
    line-height: 1.6;
}

.main-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header styles */
.header-section {
    background: linear-gradient(120deg, #3498db, #2980b9);
    padding: 4rem 0;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
    color: white;
}

.header-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;base64,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');
    background-size: 400px 400px;
    opacity: 0.1;
}

.site-title {
    font-weight: 800;
    font-size: 3rem;
    margin-bottom: 1rem;
    position: relative;
}

.text-accent {
    color: var(--accent-color);
    font-weight: 900;
}

.site-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 650px;
}

/* Search styles */
.search-container {
    margin-top: 1.5rem;
    position: relative;
}

.search-input {
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border-radius: 50px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.search-input:focus {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    outline: none;
}

.search-input.searching {
    background-image: linear-gradient(90deg, #f8f9fa 0%, #e9ecef 50%, #f8f9fa 100%);
    background-size: 200% 100%;
    animation: shimmer 1s infinite;
}

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

.search-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.2);
    transition: all 0.3s;
}

.search-btn:hover {
    background-color: #e67e22;
    box-shadow: 0 8px 20px rgba(243, 156, 18, 0.3);
    transform: translateY(-2px);
}

/* Filters section */
.filters-section {
    background-color: white;
    margin-bottom: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    padding: 1.5rem;
}

.filter-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
    font-size: 0.95rem;
}

.filter-select {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all 0.3s;
    color: var(--text-color);
    font-size: 0.95rem;
}

.filter-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
}

.filter-group {
    margin-bottom: 0.5rem;
}

/* Results section */
.results-section {
    flex-grow: 1;
    padding: 0 0 3rem;
}

.results-info {
    margin-bottom: 2rem;
    padding: 1rem 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
}

/* Invention cards */
.invention-card {
    background-color: white;
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    border: none;
    position: relative;
}

.invention-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--hover-shadow);
}

.invention-header {
    padding: 1.75rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.invention-title {
    font-weight: 700;
    font-size: 1.35rem;
    color: var(--dark-color);
    margin: 0;
    padding-right: 70px;
}

.invention-year {
    position: absolute;
    top: 1.75rem;
    right: 1.75rem;
    background-color: var(--primary-color);
    color: white;
    padding: 0.4rem 0.9rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.invention-body {
    padding: 1.75rem;
    flex-grow: 1;
}

.invention-source {
    color: var(--primary-color);
    margin-bottom: 1.25rem;
    font-size: 1rem;
    font-weight: 500;
}

.invention-progress {
    color: var(--text-color);
    margin-bottom: 0;
    line-height: 1.7;
    font-size: 0.95rem;
}

.invention-footer {
    padding: 1.25rem 1.75rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-start;
    align-items: center;
    background-color: #f8fafc;
}

.invention-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.category-badge {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.8rem;
    padding: 0.4rem 0.85rem;
    border-radius: 20px;
}

/* Loading indicator */
.spinner {
    width: 4rem;
    height: 4rem;
    border: 5px solid rgba(52, 152, 219, 0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s infinite linear;
    margin: 0 auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* No results */
.no-results {
    color: var(--text-color);
    padding: 4rem 0;
    text-align: center;
}

.no-results i {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    opacity: 0.7;
}

.reset-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 25px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.2);
}

.reset-btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.3);
}

/* Pagination */
.pagination-section {
    background-color: white;
    padding: 1.5rem;
    margin-top: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.pagination {
    margin-bottom: 0;
    flex-wrap: wrap !important; /* Add flex-wrap to make pagination responsive */
}

.pagination .page-item .page-link {
    color: var(--text-color);
    border: none;
    padding: 0.6rem 1rem;
    margin: 0 0.25rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s;
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 5px 10px rgba(52, 152, 219, 0.2);
}

.pagination .page-item:not(.active) .page-link:hover {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

.pagination .page-item.disabled .page-link {
    color: #adb5bd;
    background-color: transparent;
}

.pages-info {
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
    white-space: nowrap; /* Prevent text from wrapping */
}

/* Footer */
.footer-section {
    background-color: #f8fafc;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    color: #6c757d;
    font-size: 0.9rem;
    margin-top: 2rem;
}

/* Improved pagination for all viewport sizes */
.pagination-nav {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; /* For smoother scrolling on iOS */
    padding-bottom: 0.5rem; /* Adds space for scrollbar */
    scrollbar-width: thin;
}

.pagination-nav::-webkit-scrollbar {
    height: 4px;
}

.pagination-nav::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.pagination-nav::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 10px;
}

.pagination {
    flex-wrap: nowrap; /* Prevent wrapping on small screens */
    white-space: nowrap;
    justify-content: center;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .site-title {
        font-size: 2.5rem;
    }
    
    .site-subtitle {
        font-size: 1.1rem;
    }
    
    .header-section {
        padding: 3rem 0;
    }
    
    .filter-group {
        margin-bottom: 1.5rem;
    }
    
    .pagination-section .d-flex {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .site-title {
        font-size: 2rem;
    }
    
    .header-section {
        padding: 2.5rem 0;
        margin-bottom: 2rem;
    }
    
    .invention-card {
        margin-bottom: 1.5rem;
    }
    
    /* Fix pagination container for mobile */
    .pagination-section .d-flex {
        flex-direction: column;
        width: 100%;
        align-items: center;
    }
    
    /* Make the pagination controls container take full width */
    .pagination-nav {
        width: 100%;
        overflow-x: auto !important;
        max-width: 100%;
        margin-top: 10px;
    }
    
    /* Center the pagination on mobile */
    .pagination {
        justify-content: center;
        margin: 0 auto;
        display: flex !important;
        flex-wrap: nowrap !important;
    }
    
    /* Reduce padding on pagination buttons for mobile */
    .pagination .page-link {
        padding: 0.4rem 0.6rem;
        font-size: 0.85rem;
    }
    
    /* Ensure pagination info has proper space */
    .pages-info {
        margin-bottom: 10px;
        text-align: center;
        width: 100%;
    }
    
    /* Fix for pagination display on mobile */
    .pagination .page-item {
        display: inline-block !important;
    }
}

@media (max-width: 576px) {
    .pagination .page-link {
        padding: 0.4rem 0.75rem;
        font-size: 0.9rem;
    }
    
    .site-title {
        font-size: 1.75rem;
    }
    
    .search-input {
        padding: 0.85rem 1.25rem;
        font-size: 1rem;
    }
    
    .invention-header {
        padding: 1.25rem;
    }
    
    .invention-year {
        top: 1.25rem;
        right: 1.25rem;
        padding: 0.3rem 0.7rem;
        font-size: 0.75rem;
    }
    
    .invention-body {
        padding: 1.25rem;
    }
    
    .invention-footer {
        padding: 1rem 1.25rem;
    }
    
    /* Fix for small mobile screens pagination */
    .pagination .page-item {
        display: inline-block !important;
    }
}

/* Extra small screens specific fixes */
@media (max-width: 480px) {
    /* Make all pagination visible but compact */
    .pagination .page-item .page-link {
        padding: 0.25rem 0.4rem;
        font-size: 0.75rem;
        margin: 0 0.05rem;
    }
    
    /* Make active page stand out more */
    .pagination .page-item.active .page-link {
        padding: 0.25rem 0.5rem;
        font-weight: 700;
    }
    
    /* Fix for extra small screens pagination */
    .pagination .page-item {
        display: inline-block !important;
    }
}

/* Very small screens adjustments */
@media (max-width: 380px) {
    .pagination .page-item .page-link {
        padding: 0.2rem 0.35rem;
        font-size: 0.7rem;
        margin: 0;
    }
    
    /* Keep pagination scrollable in case it's too wide */
    .pagination-nav {
        overflow-x: auto !important;
        padding-bottom: 0.5rem;
    }
    
    /* Fix for very small screens pagination */
    .pagination .page-item {
        display: inline-block !important;
    }
}

/* Ensure pagination is visible on mobile devices */
@media (max-width: 576px) {
    /* Make sure pagination items are always displayed as blocks */
    .pagination .page-item {
        display: inline-block !important;
    }
    
    /* Adjust padding to fit more buttons */
    .pagination .page-item .page-link {
        padding: 0.3rem 0.5rem;
        font-size: 0.8rem;
        margin: 0 0.1rem;
    }
    
    /* Ensure the pagination container allows horizontal scrolling if needed */
    .pagination-nav {
        overflow-x: auto !important;
        scrollbar-width: none; /* Hide scrollbar for Firefox */
        -ms-overflow-style: none; /* Hide scrollbar for IE/Edge */
        display: flex;
        justify-content: center;
        width: 100%;
        padding-bottom: 0.5rem;
    }
    
    /* Hide scrollbar for Chrome, Safari, and Opera */
    .pagination-nav::-webkit-scrollbar {
        display: none;
    }
    
    /* Ensure pagination controls take full width */
    .pagination {
        width: auto;
        display: inline-flex !important;
        flex-wrap: nowrap !important;
        justify-content: center;
    }
}