/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to bottom right, #e4f1f6, #3b5f6c);
    color: #1b1b1b;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

img.logo {
    width: 180px;
    height: auto;
    margin-bottom: 25px;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.3));
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #1b1b1b;
    text-shadow: 1px 1px 2px rgba(255,255,255,0.5);
}

p {
    font-size: 1.2rem;
    color: #2e2e2e;
    margin-bottom: 20px;
}

.loader {
    border: 6px solid rgba(255, 255, 255, 0.3);
    border-top: 6px solid #ffffff;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-top: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}