:root {
    --bg-color: #0a0a0a;
    --text-color: #f0f0f0;
    --accent-color: #00ffcc;
    --card-bg: #1a1a1a;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body, html {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    scroll-behavior: smooth;
}

#app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    animation: fadeInDown 0.8s ease-out;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
    letter-spacing: 2px;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 30px;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--accent-color);
}

.btn {
    padding: 10px 20px;
    border-radius: 5px;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    background: transparent;
    font-size: 1rem;
}

.btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
}

.btn.primary {
    background: var(--accent-color);
    color: var(--bg-color);
}

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

.hero {
    text-align: center;
    padding: 100px 0;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: #a0a0a0;
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 50px 0;
}

.feature {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out forwards;
}

.feature:nth-child(1) { animation-delay: 0.2s; }
.feature:nth-child(2) { animation-delay: 0.4s; }
.feature:nth-child(3) { animation-delay: 0.6s; }

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 255, 204, 0.1);
}

.feature h3 {
    color: var(--accent-color);
    margin-top: 0;
}

footer {
    text-align: center;
    padding: 40px 0;
    color: #666;
    border-top: 1px solid #333;
    margin-top: 50px;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}