/**
 * Climate Hub Frontend Styles
 */

/* CSS Variables */
:root {
    --climate-hub-primary: #5A7C3A;
    --climate-hub-secondary: #1e40af;
    --climate-hub-accent: #f59e0b;
    --climate-hub-text: #1f2937;
    --climate-hub-text-light: #6b7280;
    --climate-hub-border: #e5e7eb;
    --climate-hub-bg: #f9fafb;
    --climate-hub-white: #ffffff;
    --climate-hub-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --climate-hub-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Base Styles */
.climate-hub-directory,
.climate-hub-experts,
.climate-hub-institutions,
.climate-hub-reports {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--climate-hub-text);
}

/* Header Styles */
.climate-hub-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding: 2.5rem 0;
    background: linear-gradient(135deg, rgba(90, 124, 58, 0.05), rgba(30, 64, 175, 0.05));
    border-radius: 1rem;
}

.directory-title {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--climate-hub-primary);
    margin-bottom: 0.75rem;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--climate-hub-primary), var(--climate-hub-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.directory-description {
    font-size: 1.125rem;
    color: var(--climate-hub-text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Tab Navigation Styles */
.climate-hub-tabs {
    margin-bottom: 2rem;
}

.tab-nav {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--climate-hub-border);
    margin-bottom: 2rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

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

.tab-nav::-webkit-scrollbar-track {
    background: var(--climate-hub-bg);
}

.tab-nav::-webkit-scrollbar-thumb {
    background: var(--climate-hub-primary);
    border-radius: 2px;
}

.tab-button {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--climate-hub-text-light);
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    white-space: nowrap;
    position: relative;
}

.tab-button::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--climate-hub-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tab-button:hover {
    color: var(--climate-hub-primary);
    background: rgba(90, 124, 58, 0.05);
}

.tab-button.active {
    color: var(--climate-hub-primary);
    font-weight: 600;
}

.tab-button.active::before {
    transform: scaleX(1);
}

.tab-content {
    min-height: 400px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Filters Styles */
.climate-hub-filters {
    background: var(--climate-hub-white);
    border: 1px solid var(--climate-hub-border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--climate-hub-shadow);
}

.search-container {
    display: flex;
    margin-bottom: 1rem;
}

.climate-hub-search {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--climate-hub-border);
    border-radius: 0.375rem 0 0 0.375rem;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.climate-hub-search:focus {
    border-color: var(--climate-hub-primary);
    box-shadow: 0 0 0 3px rgba(90, 124, 58, 0.1);
}

.search-button {
    padding: 0.75rem 1rem;
    background: var(--climate-hub-primary);
    color: var(--climate-hub-white);
    border: 1px solid var(--climate-hub-primary);
    border-radius: 0 0.375rem 0.375rem 0;
    cursor: pointer;
    transition: background-color 0.15s ease-in-out;
}

.search-button:hover {
    background: var(--climate-hub-secondary);
    border-color: var(--climate-hub-secondary);
}

.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.climate-hub-filter {
    padding: 0.75rem 1rem;
    border: 1px solid var(--climate-hub-border);
    border-radius: 0.375rem;
    font-size: 1rem;
    background: var(--climate-hub-white);
    min-width: 150px;
    outline: none;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.climate-hub-filter:focus {
    border-color: var(--climate-hub-primary);
    box-shadow: 0 0 0 3px rgba(90, 124, 58, 0.1);
}

/* Grid Styles */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Card Styles - Enhanced */
.climate-hub-card {
    background: var(--climate-hub-white);
    border: 1px solid var(--climate-hub-border);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--climate-hub-shadow);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.climate-hub-card:hover {
    border-color: var(--climate-hub-primary);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

.card-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--climate-hub-primary), var(--climate-hub-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.climate-hub-card:hover .card-image img {
    transform: scale(1.05);
}

.card-image .placeholder-icon {
    font-size: 64px;
    opacity: 0.9;
    color: var(--climate-hub-white);
}

.card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-header {
    margin-bottom: 1rem;
}

.card-title-container {
    flex: 1;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--climate-hub-text);
    margin: 0 0 0.5rem 0;
    line-height: 1.3;
}

.card-subtitle {
    color: var(--climate-hub-primary);
    font-size: 0.875rem;
    margin: 0;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-content {
    color: var(--climate-hub-text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: 0.9375rem;
    flex: 1;
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.meta-tag {
    background: rgba(90, 124, 58, 0.1);
    color: var(--climate-hub-primary);
    padding: 0.375rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(90, 124, 58, 0.2);
    transition: all 0.2s ease;
}

.meta-tag:hover {
    background: rgba(90, 124, 58, 0.2);
    border-color: var(--climate-hub-primary);
}

.card-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: auto;
}

/* Button Styles */
.climate-hub-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    outline: none;
}

.climate-hub-btn-primary {
    background: var(--climate-hub-primary);
    color: var(--climate-hub-white);
}

.climate-hub-btn-primary:hover {
    background: var(--climate-hub-secondary);
    color: var(--climate-hub-white);
    text-decoration: none;
}

.climate-hub-btn-secondary {
    background: var(--climate-hub-white);
    color: var(--climate-hub-text);
    border: 1px solid var(--climate-hub-border);
}

.climate-hub-btn-secondary:hover {
    background: var(--climate-hub-bg);
    color: var(--climate-hub-text);
    text-decoration: none;
}

/* Load More Button */
.load-more-container {
    text-align: center;
    margin: 2rem 0;
}

#climate-hub-load-more {
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

/* Loading and No Results */
.climate-hub-loading,
.no-results {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--climate-hub-text-light);
}

.climate-hub-loading p,
.no-results p {
    font-size: 1.125rem;
    margin: 0;
}

/* Registration Form Styles */
.climate-hub-registration-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--climate-hub-white);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--climate-hub-shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--climate-hub-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--climate-hub-border);
    border-radius: 0.375rem;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--climate-hub-primary);
    box-shadow: 0 0 0 3px rgba(90, 124, 58, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .directory-title {
        font-size: 2rem;
    }
    
    .climate-hub-filters {
        padding: 1rem;
    }
    
    .search-container {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .climate-hub-search {
        border-radius: 0.375rem;
    }
    
    .search-button {
        border-radius: 0.375rem;
    }
    
    .filters-container {
        flex-direction: column;
    }
    
    .climate-hub-filter {
        min-width: auto;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card-header {
        flex-direction: column;
        text-align: center;
    }
    
    .card-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .climate-hub-directory,
    .climate-hub-experts,
    .climate-hub-institutions,
    .climate-hub-reports {
        padding: 1rem;
    }
    
    .directory-title {
        font-size: 1.75rem;
    }
    
    .climate-hub-card {
        padding: 1rem;
    }
    
    .card-actions {
        flex-direction: column;
    }
    
    .climate-hub-btn {
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .climate-hub-filters,
    .load-more-container,
    .card-actions {
        display: none;
    }
    
    .climate-hub-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}