/* ============================================
   Global Styles & Reset
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Clean and Modern */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo a:hover {
    color: var(--primary-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: var(--spacing-xs) 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* ============================================
   Main Container
   ============================================ */

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

/* ============================================
   Blog Grid
   ============================================ */

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.blog-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.blog-card-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.blog-card-content {
    padding: var(--spacing-md);
}

.blog-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.blog-card-excerpt {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.blog-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-light);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.blog-card-date {
    font-weight: 500;
}

.blog-card-read-more {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

/* ============================================
   Article Page
   ============================================ */

.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.article-content {
    background: var(--bg-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.article-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.article-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
    line-height: 1.2;
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    color: var(--text-light);
    font-size: 0.875rem;
}

.article-body {
    margin-top: var(--spacing-md);
}

.article-body h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

.article-body h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.article-body p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.article-body ul,
.article-body ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.article-body li {
    margin-bottom: var(--spacing-xs);
}

.article-body a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.article-body a:hover {
    border-bottom-color: var(--primary-color);
}

.article-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-style: italic;
    color: var(--text-light);
}

.article-body code {
    background: var(--bg-light);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.article-body pre {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.article-body pre code {
    background: none;
    padding: 0;
}

.back-link {
    display: inline-block;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--primary-dark);
}

.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-light);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-light);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .main-container,
    .article-container {
        padding: var(--spacing-md) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .article-content {
        padding: var(--spacing-md);
    }
}

/* ============================================
   Podcast Styles
   ============================================ */

.podcast-card {
    position: relative;
}

.podcast-image {
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    font-size: 4rem;
}

.episode-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.episode-badge-large {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.episode-duration {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Audio Player */
.audio-player-container {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border: 1px solid var(--border-color);
}

.audio-player {
    width: 100%;
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
}

.audio-info {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-light);
    flex-wrap: wrap;
}

.audio-duration,
.audio-size {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.episode-description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-sm);
}

/* Subscribe Section */
.subscribe-section {
    margin-bottom: var(--spacing-xl);
}

.subscribe-box {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.subscribe-box h2 {
    color: white;
    margin-bottom: var(--spacing-xs);
    font-size: 1.75rem;
}

.subscribe-box p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
}

.podcast-platforms {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.platform-link {
    background: white;
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: inline-block;
}

.platform-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Share Buttons */
.episode-share {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--border-color);
}

.episode-share h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.share-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.3s ease;
    display: inline-block;
}

.share-twitter {
    background: #1da1f2;
    color: white;
}

.share-facebook {
    background: #1877f2;
    color: white;
}

.share-linkedin {
    background: #0a66c2;
    color: white;
}

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* Button Primary */
.btn-primary {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.3s ease;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Podcast Responsive */
@media (max-width: 768px) {
    .podcast-platforms {
        flex-direction: column;
        align-items: stretch;
    }
    
    .platform-link {
        text-align: center;
    }
    
    .audio-info {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}