/* ============================================ */
/* ESTILOS DA PÁGINA DE LOGIN                   */
/* Sistema de Facturação AGT - Multi-Tenant     */
/* ============================================ */

/* ============================================ */
/* FUNDO DA PÁGINA                              */
/* ============================================ */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f2027 0%, #203a43 30%, #2c5364 70%, #1e3c72 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    padding: 1rem;
}

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

/* Overlay decorativo */
.login-page::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.03) 0%, transparent 50%);
    pointer-events: none;
}

/* ============================================ */
/* CONTAINER DO LOGIN                           */
/* ============================================ */

.login-container {
    background: rgba(255,255,255,0.98);
    border-radius: 20px;
    box-shadow: 0 30px 80px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.1);
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 440px;
    position: relative;
    z-index: 1;
    animation: slideInUp 0.6s ease;
    backdrop-filter: blur(10px);
}

/* ============================================ */
/* CABEÇALHO DO LOGIN                           */
/* ============================================ */

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-header .logo-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 30px rgba(30,60,114,0.3);
}

.login-header .logo-icon i {
    font-size: 2.5rem;
    color: white;
}

.login-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1e3c72;
    margin-bottom: 0.3rem;
}

.login-header p {
    font-size: 0.85rem;
    color: #888;
    margin: 0;
}

.login-header .version {
    font-size: 0.7rem;
    color: #aaa;
    margin-top: 0.5rem;
}

/* ============================================ */
/* FORMULÁRIO DE LOGIN                          */
/* ============================================ */

.login-form {
    margin-bottom: 1.5rem;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
}

.login-form .form-group label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.4rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-form .form-group label i {
    color: #2a5298;
    font-size: 0.9rem;
}

.login-form .form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    background: #fafbfc;
    transition: all 0.3s;
}

.login-form .form-control:focus {
    border-color: #2a5298;
    background: #fff;
    box-shadow: 0 0 0 4px rgba(42,82,152,0.08);
    outline: none;
}

.login-form .form-control::placeholder {
    color: #bbb;
}

.login-form .form-control.error {
    border-color: #f44336;
    background: #fff5f5;
}

.login-form .error-message {
    font-size: 0.75rem;
    color: #f44336;
    margin-top: 0.3rem;
}

/* ============================================ */
/* BOTÃO DE LOGIN                               */
/* ============================================ */

.login-form .btn-login {
    width: 100%;
    padding: 0.9rem;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
    position: relative;
    overflow: hidden;
}

.login-form .btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.login-form .btn-login:hover::before {
    left: 100%;
}

.login-form .btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(30,60,114,0.4);
}

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

.login-form .btn-login:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.login-form .btn-login .spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 0.5rem;
}

/* ============================================ */
/* OPÇÕES ADICIONAIS                            */
/* ============================================ */

.login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    font-size: 0.8rem;
}

.login-options .remember-me {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: #666;
    cursor: pointer;
}

.login-options .forgot-password {
    color: #2a5298;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.login-options .forgot-password:hover {
    color: #1e3c72;
    text-decoration: underline;
}

/* ============================================ */
/* SELETOR DE IDIOMA                            */
/* ============================================ */

.language-selector {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

.language-selector a {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    color: #888;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s;
    font-weight: 500;
}

.language-selector a:hover {
    background: #f0f4f8;
    color: #1e3c72;
}

.language-selector a.active {
    background: #e3f2fd;
    color: #1e3c72;
    font-weight: 700;
}

.language-selector a .flag {
    margin-right: 0.25rem;
}

/* ============================================ */
/* RODAPÉ DO LOGIN                              */
/* ============================================ */

.login-footer {
    text-align: center;
    font-size: 0.7rem;
    color: #aaa;
    line-height: 1.6;
}

.login-footer .company-info {
    margin-top: 0.5rem;
}

/* ============================================ */
/* MENSAGENS DE ERRO/SUCESSO                    */
/* ============================================ */

.login-messages {
    margin-bottom: 1.25rem;
}

.login-messages .message {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideInDown 0.3s ease;
}

.login-messages .message.error {
    background: #ffebee;
    color: #c62828;
    border-left: 4px solid #f44336;
}

.login-messages .message.success {
    background: #e8f5e9;
    color: #2e7d32;
    border-left: 4px solid #4CAF50;
}

.login-messages .message.warning {
    background: #fff3e0;
    color: #e65100;
    border-left: 4px solid #ff9800;
}

/* ============================================ */
/* LOADING SCREEN                               */
/* ============================================ */

.login-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.9);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.login-loading .loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid #e0e0e0;
    border-top-color: #1e3c72;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

.login-loading .loading-text {
    font-size: 0.9rem;
    color: #666;
}

/* ============================================ */
/* RESPONSIVIDADE                               */
/* ============================================ */

@media (max-width: 480px) {
    .login-container {
        padding: 2rem 1.5rem;
        border-radius: 15px;
        margin: 0.5rem;
    }
    
    .login-header .logo-icon {
        width: 60px;
        height: 60px;
        border-radius: 15px;
    }
    
    .login-header h1 {
        font-size: 1.3rem;
    }
    
    .language-selector {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .language-selector a {
        font-size: 0.7rem;
        padding: 0.3rem 0.5rem;
    }
}

/* ============================================ */
/* TEMA ESCURO (opcional)                       */
/* ============================================ */

.login-page.dark-mode {
    background: #1a1a2e;
}

.login-page.dark-mode .login-container {
    background: #16213e;
    box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}

.login-page.dark-mode .login-header h1 {
    color: #fff;
}

.login-page.dark-mode .login-header p {
    color: #aaa;
}

.login-page.dark-mode .login-form .form-control {
    background: #0f3460;
    border-color: #1a1a4e;
    color: #fff;
}

.login-page.dark-mode .login-form .form-control::placeholder {
    color: #666;
}

.login-page.dark-mode .login-form label {
    color: #aaa;
}

.login-page.dark-mode .language-selector {
    border-bottom-color: #1a1a4e;
}