/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-main: #ffffff;
    --bg-secondary: #f9fafb;
    --border: #e5e7eb;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    
    /* Category colors */
    --ai-color: #8b5cf6;
    --growth-color: #10b981;
    --pmf-color: #f59e0b;
    --teams-color: #3b82f6;
    --career-color: #ec4899;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header/Hero Section */
.hero {
    text-align: center;
    padding: 3rem 0 4rem;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.category-card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    transition: width 0.2s ease;
}

.category-card.ai::before { background: var(--ai-color); }
.category-card.growth::before { background: var(--growth-color); }
.category-card.pmf::before { background: var(--pmf-color); }
.category-card.teams::before { background: var(--teams-color); }
.category-card.career::before { background: var(--career-color); }

.category-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: currentColor;
}

.category-card.ai:hover { border-color: var(--ai-color); }
.category-card.growth:hover { border-color: var(--growth-color); }
.category-card.pmf:hover { border-color: var(--pmf-color); }
.category-card.teams:hover { border-color: var(--teams-color); }
.category-card.career:hover { border-color: var(--career-color); }

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.category-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.episode-count {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Category Page Styles */
.category-header {
    text-align: center;
    padding: 2rem 0 3rem;
}

/* Subcategory Filters */
.subcategory-filters {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.filter-header {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.filter-btn {
    padding: 0.625rem 1.25rem;
    border: 2px solid var(--border);
    background: var(--bg-main);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    font-family: inherit;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.filter-btn .count {
    color: var(--text-secondary);
    margin-left: 0.5rem;
    font-size: 0.85rem;
}

.filter-btn.active .count {
    color: rgba(255, 255, 255, 0.8);
}

/* Results Header */
.results-header {
    padding: 1rem 0;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

#results-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 2rem;
    transition: gap 0.2s ease;
}

.back-link:hover {
    gap: 0.75rem;
}

.category-header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.category-header .description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.category-header .count {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Episodes List */
.episodes-list {
    display: grid;
    gap: 1.25rem;
    margin-bottom: 4rem;
}

.episode-card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.75rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.episode-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.episode-guest {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.4;
    display: block;
}

.episode-title {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    display: block;
}

.episode-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.25rem;
    display: block;
}

.episode-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding-top: 1rem;
    border-top: 1px solid var(--bg-secondary);
    margin-top: auto;
}

.episode-meta > span {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}

.watch-link {
    color: var(--primary);
    font-weight: 500;
    text-decoration: none;
    margin-left: auto;
    white-space: nowrap;
}

.watch-link:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 0.5rem;
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.disclaimer {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1.1rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .category-card {
        padding: 1.5rem;
    }
    
    .episode-card {
        padding: 1.25rem;
    }
    
    .episode-guest {
        font-size: 1.125rem;
    }
    
    .episode-meta {
        gap: 1rem;
    }
    
    .watch-link {
        margin-left: 0;
        width: 100%;
    }
    
    .filter-buttons {
        flex-direction: column;
    }
    
    .filter-btn {
        width: 100%;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem 0.75rem;
    }
    
    .hero {
        padding: 2rem 0 2rem;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .episode-card {
        padding: 1rem;
    }
    
    .subcategory-filters {
        padding: 1rem;
    }
}