:root {
    --azul-jaguar: #003366;
    --vermelho-jaguar: #FF0000;
    --azul-escuro: #000080;
    --branco: #FFFFFF;
    --cinza-claro: #F5F5F5;
    --cinza-medio: #E0E0E0;
    --texto-escuro: #1A1A1A;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, var(--azul-jaguar) 0%, var(--azul-escuro) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

/* Background animado */
.bg-animated {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(120deg, rgba(255, 255, 255, 0.05) 2px, transparent 2px),
        linear-gradient(125deg, rgba(255, 255, 255, 0.05) 2px, transparent 2px),
        linear-gradient(130deg, rgba(255, 255, 255, 0.05) 2px, transparent 2px);
    background-size: 150px 300px;
    background-position: 0 0, 30px 0, 60px 0;
    animation: bgMove 20s linear infinite;
    z-index: 0;
}

@keyframes bgMove {
    0% { background-position: 0 0, 30px 0, 60px 0; }
    100% { background-position: 150px 300px, 180px 300px, 210px 300px; }
}

/* Container do login */
.login-container {
    background: white;
    border-radius: 25px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 480px;
    padding: 50px 40px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    width: 140px;
    height: auto;
    margin-bottom: 20px;
    filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.2));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.login-header h1 {
    color: var(--azul-jaguar);
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.login-header p {
    color: #666;
    font-size: 0.95rem;
}

/* Formulário */
.login-form {
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    color: var(--azul-jaguar);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.form-group label i {
    color: var(--vermelho-jaguar);
    margin-right: 8px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--cinza-medio);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--vermelho-jaguar);
    box-shadow: 0 0 0 4px rgba(255, 0, 0, 0.1);
}

/* Password input com toggle */
.password-input {
    position: relative;
}

.password-input input {
    padding-right: 50px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 8px;
    transition: color 0.3s ease;
}

.toggle-password:hover {
    color: var(--azul-jaguar);
}

/* Opções do formulário */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.remember-me {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: #666;
    font-size: 0.9rem;
}

.remember-me input {
    margin-right: 8px;
    cursor: pointer;
}

/* Botão de login */
.btn-login {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--vermelho-jaguar) 0%, #CC0000 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 5px 20px rgba(255, 0, 0, 0.3);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4);
}

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

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-login i {
    margin-right: 10px;
}

/* Mensagem de erro */
.error-message {
    margin-top: 20px;
    padding: 14px 16px;
    background: #FFEBEE;
    border-left: 4px solid var(--vermelho-jaguar);
    border-radius: 8px;
    color: #C62828;
    font-size: 0.95rem;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.error-message i {
    margin-right: 8px;
}

/* Footer */
.login-footer {
    text-align: center;
    padding-top: 25px;
    border-top: 2px solid var(--cinza-claro);
}

.info-text {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.info-text i {
    color: var(--azul-jaguar);
    margin-right: 6px;
}

/* Credenciais padrão */
.default-credentials {
    background: #E3F2FD;
    border: 2px solid #1976D2;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.default-credentials p {
    margin: 5px 0;
    color: #1565C0;
}

.default-credentials code {
    background: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    color: var(--azul-jaguar);
    font-weight: 600;
}

.default-credentials .warning {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #90CAF9;
    color: #F57C00;
    font-weight: 600;
}

.default-credentials .warning i {
    margin-right: 6px;
}

/* Link de voltar */
.back-link {
    display: inline-block;
    color: var(--azul-jaguar);
    text-decoration: none;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.back-link:hover {
    background: var(--cinza-claro);
    color: var(--vermelho-jaguar);
}

.back-link i {
    margin-right: 6px;
}

/* Versão */
.version {
    position: absolute;
    bottom: 15px;
    right: 20px;
    color: #999;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Loading state */
.btn-login.loading {
    position: relative;
    color: transparent;
}

.btn-login.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsivo */
@media (max-width: 576px) {
    .login-container {
        padding: 40px 25px;
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
    
    .logo {
        width: 110px;
    }
    
    .default-credentials {
        font-size: 0.85rem;
    }
}

/* Modo escuro (opcional) */
@media (prefers-color-scheme: dark) {
    /* Pode adicionar estilos para modo escuro aqui */
}