body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: #0f172a;
    color: #fff;
}

/* loader */
#loader {
    position: fixed;
    width: 100%;
    height: 100%;
    background: #0f172a;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loader-circle {
    width: 50px;
    height: 50px;
    border: 2px solid rgba(255,255,255,0.1);
    border-top: 2px solid #38bdf8;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

header {
    display: flex;
    justify-content: space-between;
    padding: 20px 40px;
}

nav a {
    color: #94a3b8;
    margin-left: 20px;
    text-decoration: none;
}

.hero {
    text-align: center;
    padding: 80px 20px;
}

.buttons {
    margin-top: 20px;
}

.btn {
    background: #38bdf8;
    padding: 10px 20px;
    border-radius: 6px;
    color: #000;
    text-decoration: none;
    margin: 5px;
}

.btn.ghost {
    background: transparent;
    border: 1px solid #38bdf8;
    color: #38bdf8;
}

.container {
    max-width: 1000px;
    margin: auto;
    padding: 40px 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: rgba(255,255,255,0.05);
    padding: 20px;
    border-radius: 12px;
    transform: translateY(40px);
    opacity: 0;
    transition: all 0.6s;
}

.card.active {
    transform: translateY(0);
    opacity: 1;
}