* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(
        90deg,
        #24438c 0%,
        #214f91 25%,
        #128094 50%,
        #0b9194 75%,
        #186793 100%
    );
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    display: flex;
    justify-content: center;
}

.login-box {
    width: 100%;
    max-width: 360px;
    background: #1f2f4d; /* azul escuro elegante */
    border: 1px solid rgba(255,255,255,0.08);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.45);
    text-align: center;
}

.logo img {
    max-width: 260px;
    margin-bottom: 25px;
}

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

.login-box input:focus {
    outline: none;
    border-color: #1a73e8;
}

.login-box button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    background: #1a73e8;
    color: #fff;
    font-size: 15px;
    cursor: pointer;
}

.login-box button:hover {
    background: #1558b0;
}

.error {
    background: #fdecea;
    color: #b71c1c;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 13px;
}