:root {
    --primary: #00D084;
    --primary-dark: #00b372;
    --bg: #121212;
    --bg-light: #1e1e1e;
    --text: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.6);
    --container-width: 1100px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Nav */
header {
    padding: 24px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    font-weight: 800;
    font-size: 20px;
    letter-spacing: 2px;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

.hero-content p {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 16px;
}

.btn-primary {
    background: var(--primary);
    color: #000;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 208, 132, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-small {
    background: var(--primary);
    color: #000;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 13px;
}

/* iPhone Visual Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
}

.iphone-frame {
    width: 320px;
    height: 650px;
    background: #000;
    border-radius: 44px;
    padding: 12px;
    border: 8px solid #222;
    position: relative;
    box-shadow: 0 50px 100px rgba(0,0,0,0.5);
}

.app-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 100%);
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    position: relative;
}

.screen-header {
    text-align: center;
    font-weight: 800;
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 60px;
}

.checker-circle {
    width: 200px;
    height: 200px;
    border: 2px solid var(--primary);
    border-radius: 100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 40px rgba(0, 208, 132, 0.1);
}

.db-value {
    font-size: 64px;
    font-weight: 800;
}

.db-label {
    font-size: 14px;
    color: var(--primary);
    font-weight: 700;
}

.wave-visual {
    margin-top: auto;
    height: 100px;
    background: linear-gradient(to top, rgba(0, 208, 132, 0.1), transparent);
}

.screen-footer {
    display: flex;
    justify-content: space-around;
    padding: 16px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.tab-item {
    font-size: 10px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.3);
}

.tab-item.active {
    color: var(--primary);
}

/* Features Section */
.features {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 80px;
}

.section-title h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-title p {
    font-size: 18px;
    color: var(--text-muted);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 208, 132, 0.3);
}

.feature-card .icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 208, 132, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 15px;
}

/* Privacy Section */
.privacy {
    padding: 100px 0;
    background: #000;
}

.privacy-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.privacy-icon {
    margin-bottom: 32px;
}

.privacy h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 24px;
}

.privacy p {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.privacy-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    list-style: none;
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
}

.privacy-list li {
    font-weight: 600;
    font-size: 14px;
}

/* Pricing Section */
.pricing {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-light);
    padding: 48px;
    border-radius: 32px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.premium {
    border-color: var(--primary);
    background: linear-gradient(135deg, #1e1e1e 0%, #121212 100%);
}

.badge {
    position: absolute;
    top: 24px;
    right: 24px;
    background: var(--primary);
    color: #000;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.price {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
}

.price span {
    font-size: 16px;
    color: var(--text-muted);
    font-weight: 400;
}

.savings {
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 24px;
}

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

.pricing-card li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 15px;
}

.btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    padding: 16px;
    text-align: center;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
}

/* Footer */
footer {
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* Content Pages (Privacy, Terms, About) */
.content-section {
    padding: 160px 0 100px;
    max-width: 800px;
    margin: 0 auto;
}

.content-section h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 40px;
    color: var(--primary);
}

.content-section h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 40px 0 20px;
}

.content-section p {
    margin-bottom: 20px;
    color: var(--text-muted);
    font-size: 17px;
}

.content-section ul {
    margin-bottom: 24px;
    padding-left: 20px;
    color: var(--text-muted);
}

.content-section li {
    margin-bottom: 12px;
}

.content-section hr {
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin: 40px 0;
}

/* Responsive */
@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 120px;
    }
    
    .hero-content p {
        margin: 0 auto 40px;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-content h1 {
        font-size: 48px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .privacy-list {
        grid-template-columns: 1fr;
    }
}