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

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0f0f13;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #e2e8f0;
}

.card {
    text-align: center;
    padding: 3rem 2.5rem;
    background: #1a1a24;
    border: 1px solid #2d2d3d;
    border-radius: 1.25rem;
    max-width: 380px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,.5);
}

.logo {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: .5rem;
}

p {
    font-size: .95rem;
    color: #94a3b8;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.btn {
    display: inline-block;
    padding: .75rem 2rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    text-decoration: none;
    border-radius: .75rem;
    font-size: .95rem;
    font-weight: 600;
    transition: opacity .15s, transform .15s;
}

.btn:hover {
    opacity: .9;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}