/* Variáveis do tema */
:root {
    --primary-bg: #2f3640;
    --secondary-bg: #353b48;
    --hover-bg: #c23616;
    --accent-color: #e74c3c;
    --text-color: #ffffff;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    --gradient: #2f3640;
}

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

/* Base */
body.login-page {
    font-family: 'Montserrat', sans-serif;
    background: var(--gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
}

/* Box de Login Centralizado */
.login-box.centered {
    margin: 0 auto;
    max-width: 400px;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Box de Login */
.login-box {
    background: var(--primary-bg);
    border-radius: 15px;
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header .logo-container {
    width: 180px;
    height: 180px;
    margin: 0 auto 30px;
    padding: 20px;
    background: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
}

.login-header .logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
}

.login-header h2 {
    color: var(--text-color);
    font-size: 1.8em;
    margin-bottom: 10px;
}

.login-header p {
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.95em;
}

/* Formulário */
.form-group {
    margin-bottom: 25px;
}

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

.form-control {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.05);
    color: var(--text-color);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    background: rgba(255,255,255,0.1);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.input-icon {
    position: relative;
    transition: transform 0.2s;
}

.input-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-color);
    opacity: 0.7;
}

.input-icon .form-control {
    padding-left: 45px;
}

/* Botão de Login */
.btn-login {
    width: 100%;
    padding: 15px;
    background: var(--accent-color);
    color: var(--text-color);
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-login:hover {
    background: var(--hover-bg);
    transform: translateY(-2px);
}

.btn-login:active {
    transform: translateY(0);
}

/* Mensagens de Alerta */
.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.1);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.alert-error {
    background: rgba(231, 76, 60, 0.2);
    border-color: var(--accent-color);
}

.alert-success {
    background: rgba(46, 204, 113, 0.2);
    border-color: #2ecc71;
}

.alert-warning {
    background: rgba(241, 196, 15, 0.2);
    border-color: #f1c40f;
}

.alert-info {
    background: rgba(52, 152, 219, 0.2);
    border-color: #3498db;
}

/* Rodapé */
.system-footer {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.9em;
    text-align: center;
}

/* Responsivo */
@media (max-width: 480px) {
    .login-box {
        padding: 20px;
    }
    
    .login-header .logo-container {
        width: 120px;
        height: 120px;
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .login-header h2 {
        font-size: 1.5em;
    }
}