/* Variáveis CSS */
:root {
    --primary-color: #1A237E;
    --primary-dark: #161d6e;
    --primary-light: #534bae;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark));
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* Container Principal */
.login-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    width: 100%;
    max-width: 800px;
    animation: fadeInUp 0.6s ease-out;
    position: relative;
    overflow: hidden;
}

    .login-container::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    }

/* Logo */
.logo {
    max-width: 180px;
    height: auto;
    margin: 0 auto 1.5rem;
    display: block;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(26, 35, 126, 0.2);
}

/* Título */
h2 {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    text-align: center;
    position: relative;
}

    h2::after {
        content: '';
        position: absolute;
        bottom: -8px;
        left: 50%;
        transform: translateX(-50%);
        width: 60px;
        height: 3px;
        background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
        border-radius: 2px;
    }

/* Card Principal */
.card {
    border: none;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    overflow: hidden;
}

.card-body {
    padding: 0;
}

/* Tab Responsiva */
.tab-responsive {
    display: flex;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 12px 12px 0 0;
    overflow: hidden;
}

.tablinks {
    flex: 1;
    background: none;
    border: none;
    padding: 1.25rem 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 1rem;
}

    .tablinks:hover {
        background: rgba(255, 255, 255, 0.1);
        color: white;
    }

    .tablinks.active {
        background: rgba(255, 255, 255, 0.15);
        color: white;
        border-bottom: 3px solid white;
    }

/* Tab Content */
.tabcontent {
    display: none;
    padding: 2.5rem;
    animation: fadeIn 0.4s ease-in;
}

    .tabcontent.active {
        display: block;
    }

/* Form Controls */
.form-label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    transition: all var(--transition-speed);
    background: #f8f9fa;
    font-weight: 500;
}

    .form-control:focus {
        outline: none;
        border-color: var(--primary-color);
        background: white;
        box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
        transform: translateY(-2px);
    }

    .form-control::placeholder {
        color: #6c757d;
        font-weight: 400;
    }

/* Input Groups */
.input-group {
    position: relative;
}

.input-group-text {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: 2px solid var(--primary-color);
    border-right: none;
    color: white;
    border-radius: 12px 0 0 12px;
}

.input-group .form-control {
    border-left: none;
    border-radius: 0 12px 12px 0;
}

    .input-group .form-control:focus {
        border-left: 2px solid var(--primary-color);
        margin-left: -2px;
    }

/* Card Radio */
.card-radio {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 1.5rem;
    transition: all var(--transition-speed);
    cursor: pointer;
    background: #f8f9fa;
    text-align: center;
}

    .card-radio:hover {
        border-color: var(--primary-color);
        background: white;
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .card-radio .form-check-input {
        display: none;
    }

        .card-radio .form-check-input:checked ~ .form-check-label {
            color: var(--primary-color);
            font-weight: 700;
        }

            .card-radio .form-check-input:checked ~ .form-check-label i {
                color: var(--primary-color);
            }

    .card-radio .form-check-label {
        color: #6c757d;
        font-weight: 500;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        cursor: pointer;
    }

        .card-radio .form-check-label i {
            font-size: 1.5rem;
            transition: all var(--transition-speed);
        }

    .card-radio.active {
        border-color: var(--primary-color);
        background: rgba(26, 35, 126, 0.05);
    }

/* Botões */
.btn {
    border: none;
    border-radius: 12px;
    padding: 1rem 2rem;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all var(--transition-speed);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    cursor: pointer;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #218838);
    color: white;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

    .btn-success:hover {
        background: linear-gradient(135deg, #218838, #1e7e34);
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(40, 167, 69, 0.4);
    }

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #c82333);
    color: white;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3);
}

    .btn-danger:hover {
        background: linear-gradient(135deg, #c82333, #bd2130);
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(220, 53, 69, 0.4);
    }

/* Grid System */
.row.g-3 {
    margin: -0.75rem;
}

    .row.g-3 > [class*="col-"] {
        padding: 0.75rem;
    }

/* Estados de Validação */
.is-valid {
    border-color: var(--success-color) !important;
    background: #f8fff9;
}

.is-invalid {
    border-color: var(--danger-color) !important;
    background: #fff8f8;
}

/* Mensagens */
.alert {
    border: none;
    border-radius: 12px;
    padding: 1.25rem;
    margin: 1rem 0;
    font-weight: 500;
    border-left: 4px solid;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
    border-left-color: var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
    border-left-color: var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    color: #856404;
    border-left-color: var(--warning-color);
}

/* Animações */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsividade */
@media (max-width: 768px) {
    .login-container {
        padding: 1.5rem;
        margin: 1rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .tablinks {
        padding: 1rem;
        font-size: 0.9rem;
    }

    .tabcontent {
        padding: 1.5rem;
    }

    .card-radio {
        padding: 1rem;
    }

    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .tab-responsive {
        flex-direction: column;
    }

    .tablinks {
        width: 100%;
        justify-content: flex-start;
    }

    .row.g-3 {
        margin: -0.5rem;
    }

        .row.g-3 > [class*="col-"] {
            padding: 0.5rem;
        }
}

/* Loading */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Password Fields */
.password-section {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1.5rem;
    border-left: 4px solid var(--info-color);
}

    .password-section h6 {
        color: var(--primary-color);
        margin-bottom: 1rem;
        font-weight: 600;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }