:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --dark-color2: #424547;

    /* Cores personalizadas */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-light: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-heavy: 0 8px 25px rgba(0,0,0,0.15);

    /* Transições */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== LAYOUT GERAL ===== */
body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
}

/* ===== NAVBAR ===== */
.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    transition: var(--transition-fast);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.navbar-nav .nav-link:hover {
    /*color: var(--primary-color) !important;*/
    color: #ffffff !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: var(--transition-fast);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
    width: 80%;
}

/* ===== CARDS ===== */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-normal);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
}

.card-header {
    background: var(--primary-gradient);
    color: white;
    border: none;
    font-weight: 600;
}

/* ===== BOTÕES ===== */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    transition: var(--transition-fast);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::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: var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,123,255,0.3);
}

/* ===== FORMULÁRIOS ===== */
.form-control {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.15);
    transform: scale(1.02);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

/* ===== ALERTAS ===== */
.alert {
    border: none;
    border-radius: 10px;
    font-weight: 500;
    border-left: 4px solid;
    animation: slideInDown var(--transition-normal);
}

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

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

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

.alert-info {
    background: linear-gradient(135deg, #d1ecf1, #bee5eb);
    border-left-color: var(--info-color);
}

/* ===== TABELAS ===== */
.table {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.table thead th {
    background: var(--primary-gradient);
    color: white;
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: var(--transition-fast);
}

.table tbody tr:hover {
    background-color: rgba(0,123,255,0.05);
    transform: scale(1.01);
}

/* ===== BADGES ===== */
.badge {
    border-radius: 20px;
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== FOOTER ===== */
footer {
    background: var(--dark-color2) !important;
    color: #e7ebee;
    margin-top: auto;
}

/* ===== ANIMAÇÕES ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.fade-in {
    animation: fadeIn var(--transition-slow);
}

.pulse-animation {
    animation: pulse 2s infinite;
}

/* ===== LOADING SPINNER ===== */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== SIDEBAR ADMIN ===== */
.sidebar {
    background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 100%);
    border-right: 1px solid #dee2e6;
    min-height: 100vh;
    transition: var(--transition-normal);
}

.sidebar .nav-link {
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    margin: 0.25rem 0.5rem;
    border-radius: 8px;
    transition: var(--transition-fast);
    position: relative;
}

.sidebar .nav-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

.sidebar .nav-link.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-medium);
}

/* ===== DASHBOARD CARDS ===== */
.dashboard-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.dashboard-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.dashboard-stat {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .dashboard-card {
        padding: 1.5rem;
    }

    .dashboard-stat {
        font-size: 2rem;
    }

    .table-responsive {
        font-size: 0.875rem;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding: 0.5rem;
    }

    .card-body {
        padding: 1rem;
    }

    .btn-group .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.8rem;
    }
}

/* ===== DARK MODE (opcional) ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --dark-color: #ffffff;
        --light-color: #1a1a1a;
    }

    body {
        background-color: #1a1a1a;
        color: #ffffff;
    }

    .card {
        background-color: #2d3748;
        color: #ffffff;
    }

    .table {
        background-color: #2d3748;
        color: #ffffff;
    }
}

/* ===== UTILITÁRIOS ===== */
.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-custom {
    box-shadow: var(--shadow-heavy);
}

.border-gradient {
    border: 2px solid;
    border-image: var(--primary-gradient) 1;
}

.bg-gradient {
    background: var(--primary-gradient);
}

/* ===== SCROLLBAR CUSTOMIZADA ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}