:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --bg-main: #ffffff;
    --bg-light: #f3f4f6;
    --border-color: #e5e7eb;
    --card-bg: #ffffff;
    --radius: 12px;
}

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

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-main);
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-top: -30px;
    margin-bottom: 40px;
}

.bg-light {
    background-color: var(--bg-light);
}

/* Grid System */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

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

.btn-outline:hover {
    background-color: var(--primary-hover);
    color: #fff;
    border-color: var(--primary-hover);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

/* Header */
.header {
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.95);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 30px;
}

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

/* Hero Layout Update */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
}

.hero-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: flex-start;
}

/* Dynamic Visual */
.hero-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dynamic-element {
    position: relative;
    width: 100%;
    height: 100%;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.2) 0%, rgba(37, 99, 235, 0) 100%);
    animation: breathe 6s infinite alternate ease-in-out;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
}

.circle-2 {
    width: 200px;
    height: 200px;
    bottom: 10%;
    right: 15%;
    animation-delay: -3s;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    padding: 20px 25px;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: float 4s infinite alternate ease-in-out;
    z-index: 2;
}

.card-top {
    top: 20%;
    right: 5%;
}

.card-bottom {
    bottom: 20%;
    left: 5%;
    animation-delay: -2s;
}

.card-icon {
    font-size: 2.5rem;
}

.card-text {
    font-weight: 700;
    color: var(--text-main);
    font-size: 1.1rem;
}

@keyframes breathe {
    0% { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(1.1); opacity: 1; }
}

@keyframes float {
    0% { transform: translateY(0); }
    100% { transform: translateY(-20px); }
}

/* Features */
.feature-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-muted);
}

/* Streaming */
.support-card {
    background: var(--card-bg);
    padding: 30px 20px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.support-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

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

/* Pricing */
.pricing-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.popular {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.1);
    transform: scale(1.05);
    z-index: 10;
}

.pricing-card .badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 30px;
}

.pricing-card .price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: normal;
}

.features-list {
    list-style: none;
    margin-bottom: 40px;
    flex-grow: 1;
}

.features-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--bg-light);
    color: var(--text-muted);
}

/* Articles */
.article-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.article-card h3 {
    font-size: 1.15rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.article-card h3 a {
    color: var(--text-main);
    transition: color 0.3s;
}

.article-card h3 a:hover {
    color: var(--primary-color);
}

.article-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 0.95rem;
    flex-grow: 1;
}

.article-card .read-more {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

/* Reviews */
.review-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.review-card .stars {
    color: #fbbf24;
    font-size: 1.25rem;
    margin-bottom: 15px;
}

.review-card p {
    font-style: italic;
    margin-bottom: 20px;
}

.review-card .user {
    font-weight: 600;
    color: var(--primary-color);
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
}

.faq-item h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
}

.faq-item p {
    color: var(--text-muted);
}

/* Footer */
.footer {
    background-color: #111827;
    color: #9ca3af;
    padding: 60px 0;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-links a {
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
}

.copyright {
    font-size: 0.875rem;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.show .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.3s, background 0.3s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal-close:hover {
    color: #ef4444;
    background: #fee2e2;
}

.modal-title {
    font-size: 1.5rem;
    color: #ef4444;
    margin-bottom: 20px;
    font-weight: 700;
}

.modal-text {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }

    .hero-layout {
        grid-template-columns: 1fr;
    }

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

    .hero-content p {
        margin: 0 auto 40px;
    }

    .hero-buttons {
        flex-direction: column;
        justify-content: center;
    }

    .hero-visual {
        height: 300px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .pricing-card.popular {
        transform: scale(1);
    }
    
    .btn {
        width: 100%;
        padding: 16px 24px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
}