/* Base Reset & Variables */
:root {
    --bg-dark: #0d1117;
    --bg-card: rgba(22, 27, 34, 0.7);
    --primary-blue: #1F75FE;
    --primary-blue-hover: #155bd5;
    --success-green: #00D924;
    --text-main: #ffffff;
    --text-muted: #8b949e;
    --border-color: rgba(255, 255, 255, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    scroll-behavior: smooth;
}

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

/* Navbar */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: rgba(13, 17, 23, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo span {
    color: var(--primary-blue);
    font-weight: 400;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

.nav-btn {
    background: var(--primary-blue);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: 0 4px 15px rgba(31, 117, 254, 0.4);
}

.btn-primary:hover {
    background: var(--primary-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(31, 117, 254, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 100vh;
    padding: 0 10%;
    margin-top: 50px;
}

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

.badge {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0, 217, 36, 0.1);
    color: var(--success-green);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 217, 36, 0.2);
}

.hero h1 {
    font-size: 56px;
    line-height: 1.2;
    margin-bottom: 20px;
}

.highlight {
    color: var(--primary-blue);
}

.hero p {
    color: var(--text-muted);
    font-size: 18px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.cta-group {
    display: flex;
    gap: 20px;
}

/* Hero Mockup Graphic */
.hero-image {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glow-circle {
    position: absolute;
    width: 300px;
    height: 300px;
    background: var(--primary-blue);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: pulse 4s infinite alternate;
}

.mockup {
    position: relative;
    background: rgba(20, 20, 20, 0.8);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 30px;
    text-align: center;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    z-index: 2;
}

.mockup-icon {
    font-size: 50px;
    color: var(--success-green);
    margin-bottom: 20px;
}

/* Features Section */
.features {
    padding: 100px 10%;
    text-align: center;
}

.features h2 {
    font-size: 40px;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
    text-align: left;
}

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

.feature-icon {
    font-size: 30px;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 20px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
}

/* Download Section */
.download-section {
    padding: 100px 10%;
    display: flex;
    justify-content: center;
}

.download-box {
    background: linear-gradient(145deg, rgba(31, 117, 254, 0.1), rgba(0, 0, 0, 0));
    border: 1px solid var(--primary-blue);
    padding: 60px;
    border-radius: 30px;
    text-align: center;
    max-width: 800px;
    width: 100%;
}

.download-box h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.security-note {
    margin-top: 20px;
    color: var(--success-green);
    font-size: 14px;
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 10%;
    text-align: center;
    color: var(--text-muted);
}

footer h3 {
    color: white;
    margin-bottom: 10px;
}

.copyright {
    margin-top: 20px;
    font-size: 14px;
}

/* Keyframes */
@keyframes pulse {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.2); opacity: 0.6; }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }
    .cta-group {
        justify-content: center;
        flex-direction: column;
    }
    .hero-image {
        margin-top: 50px;
    }
    .nav-links {
        display: none; /* simple mobile fix */
    }
}