:root {
    --bg-dark: #0f172a;
    --primary: #6366f1;
    --secondary: #ec4899;
    --accent: #8b5cf6;
    --text-white: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    overflow-x: hidden;
}

.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 10% 10%, rgba(99, 102, 241, 0.15), transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.15), transparent 40%);
    z-index: -1;
}

/* Nav */
.glass-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a {
    color: var(--text-white);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white !important;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.2s;
}

.btn-primary:hover {
    transform: scale(1.05);
}

/* Hero */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8rem 10% 4rem;
    min-height: 100vh;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.cta-group {
    display: flex;
    gap: 1rem;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-white);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s;
}

.btn-secondary:hover {
    background: var(--glass-bg);
}

/* Branding Visual */
.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, #1e293b, #0f172a);
    border-radius: 40px;
    border: 8px solid #334155;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.screen-content {
    width: 100%;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.activity-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 15px;
    backdrop-filter: blur(5px);
}

.activity-card span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.activity-card h3 {
    margin: 5px 0 10px;
}

.progress-bar {
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    overflow: hidden;
}

.fill {
    height: 100%;
    background: var(--primary);
}

/* Features */
.features-section {
    padding: 5rem 10%;
    text-align: center;
}

.features-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 20px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
}

.icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.5;
}

/* CTA */
.cta-section {
    padding: 5rem 10%;
    display: flex;
    justify-content: center;
}

.glass-panel {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border: 1px solid var(--glass-border);
    padding: 3rem;
    border-radius: 30px;
    text-align: center;
    width: 100%;
    max-width: 800px;
}

.newsletter-form {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.newsletter-form input {
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    border: none;
    outline: none;
    width: 60%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid var(--glass-border);
}

/* Footer */
footer {
    padding: 2rem 10%;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
}

.social-links a {
    color: var(--text-muted);
    margin-left: 1.5rem;
    text-decoration: none;
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
    }
    
    .hero-content {
        margin-bottom: 4rem;
    }

    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input {
        width: 100%;
    }
}