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

body {
    font-family: Arial, sans-serif;
    height: 100vh;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.card {
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    text-align: center;
}

.logo {
    width: 180px;
    margin-bottom: 20px;
}

h2 {
    margin-bottom: 10px;
    color: #333;
}

.subtitle {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
}

input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 6px;
    border: 1px solid #ddd;
    font-size: 14px;
}

input:focus {
    outline: none;
    border-color: #2c5364;
}

button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    background: #2c5364;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: #1b3a4b;
}

.footer {
    margin-top: 20px;
    font-size: 12px;
    color: #999;
}

/* BOTÃO */
.btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    background: #2c5364;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: 0.3s;
}

.btn:hover {
    background: #1b3a4b;
}

/* SUCESSO */
.card.success {
    border-top: 5px solid #2ecc71;
}

/* ERRO */
.card.error {
    border-top: 5px solid #e74c3c;
}

/* LOADING */
.loader {
    margin: 20px auto;
    border: 4px solid #eee;
    border-top: 4px solid #2c5364;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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