/* Case Studies Specific Styles */

/* Hero Section */
.case-studies-hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, rgba(11, 15, 20, 0.95), rgba(30, 41, 59, 0.85));
    position: relative;
    overflow: hidden;
}

.case-studies-hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease infinite;
}

.case-studies-hero .hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
}

/* Global Metrics */
.global-metrics {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.metric-badge {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.metric-badge:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.metric-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-amber));
    border-radius: 12px;
    color: white;
}

.metric-icon ion-icon {
    font-size: 24px;
}

.metric-content {
    text-align: left;
}

.metric-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Filters Section */
.filters-section {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 80px;
    z-index: 100;
    padding: 1.5rem 0;
}

.filters-sticky {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    position: relative;
}

.filter-group,
.sort-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 150px;
}

.filter-group label,
.sort-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-select,
.sort-select,
.search-input {
    padding: 0.75rem 1rem;
    background: var(--surface-card, #1F2937); /* Dark gray background */
    border: 1px solid var(--border-primary, #374151);
    border-radius: 8px;
    color: var(--text-primary, #F9FAFB); /* Off-white text */
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

/* Style for select option elements */
.filter-select option,
.sort-select option {
    background: #1F2937; /* Dark gray background */
    color: #F9FAFB; /* Off-white text */
    padding: 0.5rem;
}

/* Ensure select elements are properly styled */
.filter-select,
.sort-select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23F9FAFB' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
    padding-right: 2.5rem;
}

.filter-select:focus,
.sort-select:focus,
.search-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    position: relative;
    z-index: 1000;
}

/* Ensure dropdowns appear above other content */
.filter-select,
.sort-select {
    position: relative;
    z-index: 500;
}

.filter-select:focus,
.sort-select:focus {
    z-index: 1000;
}

/* Prevent conflicts with mobile menu */
.mobile-menu-open .filter-select,
.mobile-menu-open .sort-select {
    z-index: auto;
    pointer-events: none;
}

.mobile-menu-open .filters-section {
    z-index: auto;
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

/* Case Studies Grid */
.case-studies-grid {
    padding: 4rem 0;
    background: var(--bg-primary);
}

.case-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* Case Study Card */
.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-amber));
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.case-card:hover::before {
    opacity: 1;
}

.case-header {
    margin-bottom: 1.5rem;
}

.case-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.case-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Case Metrics */
.case-metrics {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.case-metric {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

.metric-trend {
    font-size: 12px;
}

.trend-up {
    color: var(--success-color, #10b981);
}

.trend-down {
    color: var(--success-color, #10b981);
}

.metric-trend.improvement {
    color: var(--success-color, #10b981);
}

.metric-value-mono {
    font-family: var(--font-mono);
    font-weight: 700;
}

/* Case Tags */
.case-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.case-tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    padding: 0.25rem 0.75rem;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.case-tag.industry {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-amber);
}

.case-tag.status {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color, #10b981);
}

/* Case CTA */
.case-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
}

.case-link {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.case-link:hover {
    color: var(--accent-amber);
    transform: translateX(4px);
}

.case-duration {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* No Results */
.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Case Studies CTA Section */
.case-studies-cta {
    background: linear-gradient(135deg, rgba(11, 15, 20, 0.95), rgba(30, 41, 59, 0.85));
    padding: 4rem 0;
    text-align: center;
}

.case-studies-cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.case-studies-cta p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .case-studies-hero h1 {
        font-size: 2.5rem;
    }

    .global-metrics {
        flex-direction: column;
        align-items: center;
    }

    .metric-badge {
        width: 100%;
        max-width: 300px;
    }

    /* Fix filters section for mobile */
    .filters-section {
        position: static;
        z-index: auto;
        padding: 1rem 0;
    }

    .filters-sticky {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
        position: static;
    }

    .filter-group,
    .sort-group {
        width: 100%;
        max-width: none;
    }

    /* Ensure dropdowns work properly on mobile */
    .filter-select,
    .sort-select {
        width: 100%;
        min-height: 44px;
        font-size: 1rem;
        position: static;
        z-index: auto;
    }

    .filter-select:focus,
    .sort-select:focus {
        position: static;
        z-index: auto;
        transform: none;
    }

    .search-input {
        width: 100%;
        min-height: 44px;
        font-size: 1rem;
    }

    .case-cards-grid {
        grid-template-columns: 1fr;
    }

    .case-metrics {
        justify-content: center;
    }

    .case-cta {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .case-card {
        padding: 1.5rem;
    }

    .case-studies-hero {
        padding: 6rem 0 3rem;
    }

    .case-studies-hero h1 {
        font-size: 2rem;
    }

    .metric-badge {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    /* Enhanced mobile filter fixes */
    .filters-section {
        padding: 0.75rem 0;
    }

    .filter-group label,
    .sort-group label {
        font-size: 0.75rem;
        margin-bottom: 0.25rem;
    }

    .filter-select,
    .sort-select,
    .search-input {
        min-height: 48px;
        font-size: 1rem;
        padding: 0.875rem 1rem;
    }

    .filter-select,
    .sort-select {
        padding-right: 3rem;
    }
}

/* Loading State */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(59, 130, 246, 0.2);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    .case-card,
    .metric-badge,
    .case-link {
        transition: none;
    }

    .case-card:hover {
        transform: none;
    }

    .loading-spinner {
        animation: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .case-card {
        border-color: var(--text-primary);
    }

    .case-card:hover {
        border-color: var(--accent-blue);
        background: var(--bg-secondary);
    }
}