/* Header Styles */
.header {
    background: var(--white);
    border-bottom: 1px solid #eee;
    padding: 1rem 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
}

/* Google Signin Button */
.auth-section {
    display: flex;
    align-items: center;
}

.google-signin-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: #4285f4;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    white-space: nowrap;
}

.google-signin-btn:hover {
    background: #3367d6;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.google-signin-btn i {
    font-size: 1rem;
}

/* Hero Section */
.hero {
    padding: 6rem 0 5rem;
    text-align: center;
    background-color: var(--bg-color);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto 1.5rem;
    line-height: 1.6;
}

.hero .subtitle {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2.5rem;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    min-width: 180px;
    padding: 1rem 2.5rem;
}

/* Featured Channels */
.featured-channels {
    padding: 5rem 0;
    background: var(--white);
}

.channel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.channel-card {
    background: var(--white);
    padding: 2.5rem;
    text-align: center;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: block;
}

.channel-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.playbutton {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
}

.channel-card h3 {
    color: var(--text-color);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.subscriber-count {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0.5rem 0;
}

.views {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--bg-color);
}

.feature-card {
    background: var(--white);
    padding: 3rem;
    margin-bottom: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.feature-card:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover:after {
    opacity: 1;
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 2rem;
}

.feature-card h2 {
    color: var(--text-color);
    margin-bottom: 1.25rem;
    font-size: 2rem;
}

.feature-card p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.7;
    font-size: 1.125rem;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    margin-top: 2rem;
    font-size: 1.125rem;
    padding: 0.5rem 0;
    position: relative;
}

.read-more:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.read-more:hover:after {
    transform: scaleX(1);
    transform-origin: left;
}

.read-more i {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.read-more:hover i {
    transform: translateX(5px);
}

/* Download Section */
.download {
    padding: 6rem 0;
    text-align: center;
    background: var(--white);
}

.download h2 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
}

.download p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-size: 1.25rem;
    line-height: 1.7;
}

.download-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.download-buttons .btn {
    min-width: 220px;
    padding: 1.25rem 3rem;
}

/* Footer */
.footer {
    padding: 2.5rem 0;
    background: var(--white);
    border-top: 1px solid #eee;
}

.footer-content {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* Mobile Navigation Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .channel-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .logo {
        text-align: center;
    }

    .nav-links {
        justify-content: center;
        gap: 1.5rem;
        flex-wrap: wrap;
    }

    .auth-section {
        justify-content: center;
    }

    .google-signin-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
        padding: 0.875rem 1.5rem;
    }

    .hero {
        padding: 4rem 0 3rem;
    }

    .hero h1 {
        font-size: 2.5rem;
        line-height: 1.3;
    }

    .hero p {
        font-size: 1.125rem;
    }
    
    .channel-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .cta-buttons,
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }

    .feature-card {
        padding: 2rem;
        margin-bottom: 2rem;
    }

    .feature-card h2 {
        font-size: 1.75rem;
    }

    .feature-card p {
        font-size: 1rem;
    }

    .download {
        padding: 4rem 0;
    }

    .download h2 {
        font-size: 2rem;
    }

    .download p {
        font-size: 1.125rem;
        margin-bottom: 2rem;
    }

    .footer-links {
        gap: 1rem;
    }

    .features,
    .featured-channels {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0.5rem 0;
    }

    .logo a {
        font-size: 1.25rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .google-signin-btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.85rem;
        max-width: 250px;
    }

    .hero {
        padding: 3rem 0 2rem;
    }

    .hero h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .hero p {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .hero .subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .cta-buttons .btn {
        min-width: 160px;
        padding: 0.875rem 2rem;
        font-size: 0.95rem;
    }

    .channel-card {
        padding: 2rem 1.5rem;
    }

    .channel-card h3 {
        font-size: 1.125rem;
    }

    .subscriber-count {
        font-size: 1.5rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .feature-card h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .feature-card p {
        font-size: 0.95rem;
    }

    .read-more {
        font-size: 1rem;
        margin-top: 1.5rem;
    }

    .download h2 {
        font-size: 1.75rem;
    }

    .download p {
        font-size: 1rem;
    }

    .download-buttons .btn {
        min-width: 180px;
        padding: 1rem 2rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.75rem;
    }

    .footer-links a {
        font-size: 0.9rem;
    }

    .footer p {
        font-size: 0.85rem;
    }
}

@media (max-width: 360px) {
    .container {
        padding: 0 1rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .channel-card {
        padding: 1.5rem 1rem;
    }

    .feature-card {
        padding: 1.25rem;
    }

    .google-signin-btn {
        font-size: 0.8rem;
        padding: 0.625rem 1rem;
    }
}