:root {
    --bg-color: #041212;
    --bg-card: #081a1a;
    --primary: #008080;
    --primary-light: #00a8a8;
    --text-main: #e0f7f7;
    --text-muted: #8ca3a3;
    --border: #143333;
    
    --shadow: 0 10px 30px rgba(0,0,0,0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* HEADER */
header {
    background-color: rgba(4, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

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

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i { font-size: 28px; }

.nav-links {
    display: flex;
    gap: 30px;
    font-size: 15px;
    font-weight: 500;
}

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

.btn-tg {
    background-color: var(--primary);
    color: #fff;
    padding: 10px 22px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-tg:hover { background-color: var(--primary-light); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(0,128,128,0.4); }

/* HERO SECTION */
.hero {
    padding: 180px 0 100px;
    text-align: center;
    background: radial-gradient(circle at center, rgba(0,128,128,0.15) 0%, rgba(4,18,18,0) 70%);
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 25px;
    letter-spacing: -1px;
}

.hero h1 span {
    color: var(--primary);
    background: linear-gradient(135deg, var(--primary) 0%, #00e0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 20px;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 50px;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn-primary, .btn-secondary {
    padding: 16px 40px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 16px;
    transition: var(--transition);
}

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

.btn-primary:hover { background-color: var(--primary-light); transform: translateY(-3px); box-shadow: 0 8px 25px rgba(0,128,128,0.4); }

.btn-secondary {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-main);
}

.btn-secondary:hover { background-color: #0c2626; border-color: var(--primary); }

/* FEATURES SECTION */
.features {
    padding: 100px 0;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-header h2 { font-size: 38px; font-weight: 800; margin-bottom: 15px; }
.section-header h2 span { color: var(--primary); }
.section-header p { color: var(--text-muted); font-size: 17px; max-width: 500px; margin: 0 auto; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--bg-color);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 32px;
    color: var(--primary);
    background-color: rgba(0,128,128,0.1);
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    margin-bottom: 30px;
}

.feature-card h3 { font-size: 22px; margin-bottom: 15px; font-weight: 700; }
.feature-card p { color: var(--text-muted); font-size: 16px; line-height: 1.7; }

/* PRICING */
.pricing {
    padding: 120px 0;
}

.pricing-flex-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    align-items: stretch;
    flex-wrap: nowrap;
}

.pricing-card {
    background-color: var(--bg-card);
    padding: 50px 40px;
    border-radius: 20px;
    border: 2px solid var(--border);
    position: relative;
    transition: var(--transition);
    flex: 1;
    max-width: 380px;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(0,0,0,0.6);
}

.pricing-card.popular {
    border-color: var(--primary);
    background: linear-gradient(135deg, var(--bg-card) 0%, #082626 100%);
    transform: scale(1.03);
}

.pricing-card.popular:hover { transform: translateY(-10px) scale(1.05); }

.popular-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background-color: var(--primary);
    color: #fff;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(0,128,128,0.3);
}

.pricing-header {
    margin-bottom: 35px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 25px;
}

.pricing-header h3 { font-size: 26px; font-weight: 800; margin-bottom: 10px; color: var(--text-main); }
.pricing-header p { color: var(--text-muted); font-size: 15px; }

.price {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 40px;
    color: var(--text-main);
    display: flex;
    align-items: baseline;
    gap: 5px;
}
.price span { font-size: 18px; color: var(--text-muted); font-weight: 400; }

.pricing-features {
    margin-bottom: 40px;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    font-size: 16px;
    color: var(--text-main);
}

.pricing-features li i {
    color: var(--primary);
    font-size: 18px;
    background-color: rgba(0,128,128,0.1);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.btn-pricing {
    display: block;
    text-align: center;
    background-color: var(--primary);
    color: #fff;
    padding: 18px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 16px;
    width: 100%;
    transition: var(--transition);
}

.btn-pricing:hover {
    background-color: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,128,128,0.3);
}

.pricing-card:not(.popular) .btn-pricing {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.pricing-card:not(.popular):hover .btn-pricing {
    background-color: var(--primary);
    color: #fff;
}

/* FAQ */
.faq {
    padding: 100px 0;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(45%, 1fr));
    gap: 40px;
}

.faq-item h4 { font-size: 19px; font-weight: 700; margin-bottom: 15px; color: var(--text-main); }
.faq-item p { color: var(--text-muted); font-size: 15px; line-height: 1.7; }

/* FOOTER */
footer {
    background-color: var(--bg-color);
    padding: 70px 0 30px;
    border-top: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-muted);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo { font-size: 22px; font-weight: 800; color: var(--primary); margin-bottom: 20px; display: block; }
.footer-logo:hover { color: var(--primary-light); }

.footer-links h5 { color: var(--text-main); margin-bottom: 20px; font-size: 16px; font-weight: 600; }
.footer-links ul li { margin-bottom: 12px; }
.footer-links a:hover { color: var(--primary); padding-left: 5px; }

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    font-size: 13px;
}

/* MEDIA QUERIES */
@media (max-width: 1024px) {
    .hero h1 { font-size: 42px; }
    .pricing-flex-container { flex-wrap: wrap; justify-content: center; }
    .pricing-card { flex: none; width: calc(50% - 15px); max-width: none; }
    .pricing-card.popular { transform: none; order: -1; width: 100%; max-width: 600px; margin-bottom: 20px;}
    .pricing-card.popular:hover { transform: translateY(-10px); }
}

@media (max-width: 768px) {
    .nav-links, .header-btns { display: none; }
    .hero h1 { font-size: 36px; }
    .hero p { font-size: 17px; }
    .hero-btns { flex-direction: column; align-items: center; }
    .features-grid { grid-template-columns: 1fr; }
    .pricing-card { width: 100%; margin-bottom: 20px; padding: 40px 30px;}
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .footer-about { grid-column: span 2; margin-bottom: 20px;}
}