:root {
    --primary-color: #5b6ee1;
    --secondary-color: #7f55da;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --text-color: #212529;
    --white: #ffffff;
}

/* UTILITIES DE TEXTO E BACKGROUND */
.text-white { color: var(--white) !important; }
.text-dark { color: var(--dark-color) !important; }
.text-muted { color: #6c757d !important; }
.bg-white { background-color: var(--white) !important; }
.bg-dark { background-color: var(--dark-color) !important; }
.bg-light { background-color: var(--light-color) !important; }
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) !important;
    color: var(--white);
}

/* LANDING PAGE */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    min-height: 100vh;
}

.feature-icon {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* AUTH PAGES */
.auth-container {
    background: linear-gradient(135deg, #eef2f7 0%, #d3dbe9 100%);
    min-height: 100vh;
}

.auth-card {
    background: var(--white);
    color: var(--text-color);
}

/* SIDEBAR */
.sidebar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.sidebar .nav-link {
    color: var(--white);
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background: rgba(255, 255, 255, 0.15);
}

/* CARDS */
.card {
    background: var(--white);
    color: var(--text-color);
}

.card-header {
    background: var(--primary-color);
    color: var(--white);
}

/* STATS CARDS */
.stats-card {
    background: var(--white);
    color: var(--text-color);
    border-left: 5px solid var(--primary-color);
}

/* BUTTONS */
.btn {
    border-radius: 8px;
    font-weight: 600;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--secondary-color);
}

/* TABLES */
.table {
    color: var(--text-color);
    background: var(--white);
}

.table th {
    background-color: #e9ecef;
    color: var(--dark-color);
}

.table td {
    background-color: var(--white);
}

/* FORMS */
.form-control, .form-select {
    border: 1px solid #ced4da;
    background: var(--white);
    color: var(--text-color);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(91, 110, 225, 0.25);
}

/* SCROLLBAR */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 8px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* ANIMAÇÕES */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* VALIDAÇÃO DE FORMULÁRIOS - SUBSCRIPTION */
.subscription-form .is-invalid {
    border-color: var(--danger-color) !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

.subscription-form .is-invalid:focus {
    border-color: var(--danger-color) !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

.subscription-form .form-check-input.is-invalid {
    border-color: var(--danger-color) !important;
}

.subscription-form .form-check-input.is-invalid:focus {
    border-color: var(--danger-color) !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

.subscription-form .invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--danger-color);
}

.subscription-form .is-invalid ~ .invalid-feedback {
    display: block;
}

.subscription-form .btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* VALIDAÇÃO VISUAL PARA CAMPOS OK */
.subscription-form .is-valid {
    border-color: var(--success-color) !important;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25) !important;
}

.subscription-form .is-valid:focus {
    border-color: var(--success-color) !important;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25) !important;
}

.subscription-form .valid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--success-color);
}

.subscription-form .is-valid ~ .valid-feedback {
    display: block;
}