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

body {
    height: 100vh;
    background: linear-gradient(135deg, #1f2933, #111827);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
}

.container {
    width: 100%;
    padding: 20px;
}

.card {
    max-width: 420px;
    margin: auto;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.card h1 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.card p {
    font-size: 1rem;
    margin-bottom: 10px;
    color: #d1d5db;
}

.card span {
    font-size: 0.9rem;
    color: #9ca3af;
}

.loader {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.2);
    border-top: 5px solid #3b82f6;
    border-radius: 50%;
    margin: 25px auto;
    animation: spin 1s linear infinite;
}

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

footer {
    margin-top: 20px;
    font-size: 0.8rem;
    color: #9ca3af;
}
.logo {
    max-width: 140px;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.4));
}