/* ===============================
   RESET BÁSICO
================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===============================
   BODY
================================= */
body {
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background: linear-gradient(135deg, #ff6600, #ff8533);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===============================
   CONTAINER LOGIN
================================= */
.login-wrapper {
    width: 100%;
    padding: 20px;
}

.login-box {
    background: #ffffff;
    max-width: 400px;
    margin: auto;
    padding: 40px 35px;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    text-align: center;
    animation: fadeIn 0.4s ease-in-out;
}

/* ===============================
   TÍTULO
================================= */
.login-box h3 {
    margin-bottom: 25px;
    font-size: 24px;
    color: #333;
    font-weight: 600;
}

/* ===============================
   INPUTS
================================= */
.login-box input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 15px;
    border-radius: 10px;
    border: 1px solid #ddd;
    font-size: 15px;
    transition: 0.2s;
}

.login-box input:focus {
    border-color: #ff6600;
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.15);
}

/* ===============================
   BOTÃO
================================= */
.login-box button {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, #28a745, #34d058);
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
    box-shadow: 0 8px 20px rgba(40, 167, 69, 0.3);
}

.login-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(40, 167, 69, 0.4);
}

.login-box button:active {
    transform: scale(0.98);
}

/* ===============================
   RESPONSIVIDADE
================================= */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 25px;
    }

    .login-box h3 {
        font-size: 20px;
    }
}

/* ===============================
   ANIMAÇÃO
================================= */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===============================
   ALERTA DE ERRO
================================= */
.alert-error {
    background: #ffe5e5;
    color: #b30000;
    border: 1px solid #ffb3b3;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 15px;
    text-align: left;
    animation: shake 0.25s ease-in-out;
}

/* Animação leve */
@keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    50% { transform: translateX(4px); }
    75% { transform: translateX(-2px); }
    100% { transform: translateX(0); }
}