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

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --accent-primary: #00d4ff;
    --accent-secondary: #ff6b35;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    --accent-gradient-alt: linear-gradient(135deg, #ff6b35 0%, #cc5529 100%);
    --border-color: #333333;
    --shadow-light: rgba(0, 212, 255, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.5);
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

body {
    font-family: var(--font-secondary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.2rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 1px;
}

.nav-contact {
    display: flex;
    gap: var(--spacing-sm);
}

.contact-link {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: all 0.3s ease;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
}

.contact-link:hover {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Audio Wave Animation */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.audio-wave {
    display: flex;
    gap: 4px;
    align-items: center;
    height: 200px;
}

.wave-bar {
    width: 8px;
    background: var(--accent-gradient);
    border-radius: 4px;
    animation: wave 1.5s ease-in-out infinite;
}

.wave-bar:nth-child(1) { height: 20px; animation-delay: 0s; }
.wave-bar:nth-child(2) { height: 40px; animation-delay: 0.1s; }
.wave-bar:nth-child(3) { height: 80px; animation-delay: 0.2s; }
.wave-bar:nth-child(4) { height: 120px; animation-delay: 0.3s; }
.wave-bar:nth-child(5) { height: 160px; animation-delay: 0.4s; }
.wave-bar:nth-child(6) { height: 100px; animation-delay: 0.5s; }
.wave-bar:nth-child(7) { height: 60px; animation-delay: 0.6s; }
.wave-bar:nth-child(8) { height: 30px; animation-delay: 0.7s; }

@keyframes wave {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(1.5); }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px var(--shadow-light);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-light);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
}

.btn-secondary:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

/* Sections */
.section-title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Problems Section */
.problems {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-secondary);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.problem-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.problem-card:hover::before {
    left: 100%;
}

.problem-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px var(--shadow-dark);
}

.problem-icon {
    font-size: 3rem;
    color: var(--accent-secondary);
    margin-bottom: var(--spacing-md);
}

.problem-card h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.problem-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Products Section */
.products {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}

.product-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 15px 40px var(--shadow-dark);
}

.product-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.product-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
}

.product-card h3 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.product-tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.feature i {
    color: var(--accent-primary);
    font-size: 0.9rem;
}

/* Pricing Section */
.pricing-section {
    display: flex;
    justify-content: center;
}

.pricing-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 2px solid var(--accent-primary);
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
}

.price-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.old-price {
    font-size: 1.5rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.new-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.discount-label {
    background: var(--accent-secondary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.price-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.price-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.price-features span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.price-features i {
    color: var(--accent-primary);
    margin-right: var(--spacing-xs);
}

/* CTA Section */
.cta {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-secondary);
}

.cta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.cta-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.cta-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px var(--shadow-dark);
}

.cta-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
}

.cta-card h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.cta-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.instagram-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Contact Form */
.contact-form {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-primary);
}

.contact-form h3 {
    font-family: var(--font-primary);
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.message-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-secondary);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--bg-tertiary);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.footer-brand h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    text-align: right;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .nav-menu {
        margin: var(--spacing-sm) 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .problems-grid,
    .products-grid,
    .cta-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        text-align: center;
    }
    
    .instagram-links {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .product-card,
    .problem-card,
    .cta-card {
        padding: var(--spacing-lg);
    }
}


/* Article Styles */
.article-header {
    padding: calc(70px + var(--spacing-xxl)) 0 var(--spacing-xxl);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.article-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 70%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.article-category {
    background: var(--accent-gradient);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.article-date {
    color: var(--text-secondary);
}

.article-title {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.article-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
}

.article-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
}

.author-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Article Content Layout */
.article-content {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-primary);
}

.article-content .container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-xxl);
    max-width: 1400px;
}

.article-body {
    max-width: none;
}

.content-section {
    margin-bottom: var(--spacing-xxl);
}

.content-section h2 {
    font-family: var(--font-primary);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    position: relative;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.content-section h3 {
    font-family: var(--font-primary);
    font-size: 1.6rem;
    font-weight: 600;
    margin: var(--spacing-xl) 0 var(--spacing-md);
    color: var(--text-primary);
}

.content-section h4 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    color: var(--accent-primary);
}

.lead-paragraph {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
}

.content-section p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* Table of Contents */
.toc-section {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xxl);
}

.toc-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.toc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.toc-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.toc-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 25px var(--shadow-dark);
}

.toc-item i {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
}

.toc-item h3 {
    font-size: 1.2rem;
    margin: 0 0 var(--spacing-sm);
    color: var(--text-primary);
}

.toc-item p {
    font-size: 0.95rem;
    margin: 0;
    color: var(--text-secondary);
}

/* Tip Boxes */
.tip-box {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 204, 0.05) 100%);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    position: relative;
}

.tip-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 2px 0 0 2px;
}

.tip-box h4 {
    color: var(--accent-primary);
    margin: 0 0 var(--spacing-sm);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.tip-box p {
    margin: 0;
    color: var(--text-primary);
    font-weight: 500;
}

/* Technique Grid */
.technique-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.technique-card {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
}

.technique-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 20px var(--shadow-dark);
}

.technique-card h4 {
    color: var(--accent-primary);
    margin: 0 0 var(--spacing-xs);
    font-size: 1rem;
}

.technique-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Platform Grid */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.platform-card {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 20px var(--shadow-dark);
}

.platform-card i {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-sm);
}

.platform-card h4 {
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs);
    font-size: 1rem;
}

.platform-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Action Box */
.action-box {
    background: var(--bg-secondary);
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    margin: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.action-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
}

.action-box h3 {
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm);
    font-size: 1.4rem;
}

.action-box p {
    margin: 0 0 var(--spacing-lg);
    color: var(--text-secondary);
}

/* Sidebar */
.article-sidebar {
    position: sticky;
    top: calc(70px + var(--spacing-lg));
    height: fit-content;
}

.sidebar-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.sidebar-section h3 {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-md);
    color: var(--text-primary);
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin-bottom: var(--spacing-xs);
}

.sidebar-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    display: block;
    padding: var(--spacing-xs) 0;
}

.sidebar-nav a:hover {
    color: var(--accent-primary);
}

.resource-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.resource-card:last-child {
    margin-bottom: 0;
}

.resource-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 var(--spacing-xs);
    color: var(--text-primary);
}

.resource-card p {
    font-size: 0.85rem;
    margin: 0 0 var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.resource-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.resource-link:hover {
    color: var(--accent-secondary);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

.social-link:hover {
    color: var(--accent-primary);
}

.social-link i {
    width: 20px;
    text-align: center;
}

/* Responsive Design for Articles */
@media (max-width: 1024px) {
    .article-content .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .article-sidebar {
        position: static;
        order: -1;
    }
    
    .sidebar-section {
        display: none;
    }
    
    .sidebar-section:first-child {
        display: block;
    }
}

@media (max-width: 768px) {
    .article-title {
        font-size: 2.2rem;
    }
    
    .article-subtitle {
        font-size: 1.1rem;
    }
    
    .content-section h2 {
        font-size: 1.8rem;
    }
    
    .content-section h3 {
        font-size: 1.4rem;
    }
    
    .toc-grid,
    .technique-grid,
    .platform-grid {
        grid-template-columns: 1fr;
    }
    
    .article-content .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .article-title {
        font-size: 1.8rem;
    }
    
    .lead-paragraph {
        font-size: 1.1rem;
    }
    
    .content-section p {
        font-size: 1rem;
    }
    
    .tip-box,
    .action-box {
        padding: var(--spacing-md);
    }
}

/* Drum Kits Page Styles */
.page-header {
    padding: calc(70px + var(--spacing-xxl)) 0 var(--spacing-xxl);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.page-header .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.page-title {
    font-family: var(--font-primary);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.header-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-primary);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* Drum Kit Visual */
.drum-kit-visual {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
}

.drum-element {
    position: absolute;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    animation: drumPulse 2s ease-in-out infinite;
    box-shadow: 0 4px 15px var(--shadow-light);
}

.drum-element.kick {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
    animation-delay: 0s;
}

.drum-element.snare {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 0.5s;
}

.drum-element.hihat {
    top: 20px;
    right: 60px;
    animation-delay: 0.25s;
}

.drum-element.crash {
    top: 20px;
    left: 60px;
    animation-delay: 0.75s;
}

.drum-element.tom1 {
    top: 80px;
    left: 20px;
    animation-delay: 0.125s;
}

.drum-element.tom2 {
    top: 80px;
    right: 20px;
    animation-delay: 0.625s;
}

@keyframes drumPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

/* Filter Section */
.filter-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.filter-controls {
    display: flex;
    gap: var(--spacing-xxl);
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.filter-group label {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* Drum Kits Grid */
.drum-kits-section {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-primary);
}

.kits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.kit-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
}

.kit-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 15px 40px var(--shadow-dark);
}

.kit-image {
    position: relative;
    height: 200px;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.kit-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
}

.kit-placeholder i {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-primary);
    opacity: 0.5;
}

.coming-soon {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.kit-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.kit-card:hover .kit-overlay {
    opacity: 1;
}

.play-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-btn:hover:not(:disabled) {
    transform: scale(1.1);
}

.play-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.kit-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kit-badge.free {
    background: #28a745;
    color: white;
}

.kit-badge.premium {
    background: var(--accent-gradient);
    color: white;
}

.kit-info {
    padding: var(--spacing-lg);
}

.kit-title {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.kit-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.kit-details {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.kit-genre,
.kit-bpm,
.kit-samples {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.kit-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.kit-actions .btn {
    flex: 1;
    justify-content: center;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.kit-actions .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Newsletter Section */
.newsletter-section {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-secondary);
    text-align: center;
}

.newsletter-content h2 {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.newsletter-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter-form {
    max-width: 500px;
    margin: 0 auto var(--spacing-md);
}

.newsletter-form .form-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: 0;
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.newsletter-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

/* Responsive Design for Drum Kits Page */
@media (max-width: 768px) {
    .page-header .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .header-stats {
        justify-content: center;
    }
    
    .drum-kit-visual {
        width: 250px;
        height: 250px;
    }
    
    .filter-controls {
        flex-direction: column;
        gap: var(--spacing-lg);
        align-items: stretch;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .kits-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .newsletter-form .form-group {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 2rem;
    }
    
    .drum-kit-visual {
        width: 200px;
        height: 200px;
    }
    
    .drum-element {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }
    
    .drum-element.kick {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    .kit-info {
        padding: var(--spacing-md);
    }
    
    .kit-details {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}