/* =============================================================== */
/* Folha de Estilos para a Tela de Login                           */
/* Versão: 2.1 (Ajustes Finais de Ícone e Animação)                */
/* =============================================================== */

:root {
    --primary-gradient: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    --card-bg-color: #ffffff;
    --text-color: #333;
    --input-border-color: #e0e0e0;
    --input-focus-border-color: #2575fc;
    --button-bg-gradient: linear-gradient(45deg, #6a11cb 0%, #2575fc 100%);
    --button-hover-bg-gradient: linear-gradient(45deg, #5a0eb5 0%, #1a60e0 100%);
    --error-color: #dc3545;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.2);
}

body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--primary-gradient);
    background-size: 200% 200%;
    animation: gradientAnimation 15s ease infinite;
}

.login-container {
    background-color: transparent;
    border-radius: 20px;
    width: 90%;
    max-width: 420px;
    text-align: center;
    animation: fadeIn 0.8s ease-out;
}

.login-header {
    margin-bottom: 0;
    color: var(--card-bg-color);
    padding: 30px 20px;
    background: var(--button-bg-gradient);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    box-shadow: 0 10px 25px var(--shadow-medium);
    position: relative;
    z-index: 1;
}

.helmet-icon {
    font-size: 3.5em; /* Tamanho ajustado/mantido */
    color: var(--card-bg-color);
    margin-bottom: 10px;
    animation: pulse 2s ease-in-out infinite; /* Nova animação de pulsação */
}

.login-header h1 {
    margin: 0;
    font-size: 2.2em;
    font-weight: 700;
}

.login-header p {
    margin: 5px 0 0 0;
    font-size: 1em;
    font-weight: 300;
    opacity: 0.9;
}

.login-form-card {
    background-color: var(--card-bg-color);
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    padding: 40px 30px 30px 30px;
    box-shadow: 0 15px 30px var(--shadow-medium);
}

.input-group {
    margin-bottom: 25px;
    text-align: left;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.95em;
}

.input-group label i {
    margin-right: 8px;
    color: #999;
}

.input-group input {
    width: 100%;
    padding: 14px 14px 14px 16px;
    border: 1px solid var(--input-border-color);
    border-radius: 10px;
    font-size: 1em;
    color: var(--text-color);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-group input:focus {
    outline: none;
    border-color: var(--input-focus-border-color);
    box-shadow: 0 0 0 3px rgba(37, 117, 252, 0.2);
}

.login-button {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 10px;
    background: var(--button-bg-gradient);
    color: var(--card-bg-color);
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(37, 117, 252, 0.3);
    margin-top: 10px;
}

.login-button:hover {
    background: var(--button-hover-bg-gradient);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(37, 117, 252, 0.4);
}

.error-message {
    color: var(--error-color);
    background-color: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 20px;
    font-size: 0.9em;
    animation: shake 0.5s;
    text-align: center;
}

.footer-credit {
    margin-top: 20px;
    font-size: 0.8em;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

/* Animações */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

@keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

/* Responsividade */
@media (max-width: 480px) {
    body, html {
        align-items: flex-start;
        padding-top: 5vh;
    }
    .login-container {
        width: 100%;
        padding: 0 15px;
        box-sizing: border-box;
        box-shadow: none;
        background-color: transparent;
    }
    .login-header {
        padding: 25px 15px;
    }
    .login-header h1 {
        font-size: 1.8em;
    }
    .helmet-icon {
        font-size: 3.5em; /* Tamanho ajustado para mobile */
    }
    .login-form-card {
        padding: 30px 20px 20px 20px;
    }
    .input-group {
        margin-bottom: 20px;
    }
}