/* Principais variáveis de cores */
:root {
    --primary-color: #2a76dd;
    --primary-dark: #1a5bb3;
    --primary-light: #4c94f3;
    --secondary-color: #2ecc71;
    --secondary-dark: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --dark-bg: #1a1e2c;
    --darker-bg: #141824;
    --card-bg: rgba(33, 37, 41, 0.8);
    --text-light: #f8f9fa;
    --text-muted: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
}

/* Estilos gerais */
body {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    min-height: 100vh;
    color: var(--text-light);
    padding-bottom: 2rem;
    font-family: 'Roboto', 'Segoe UI', sans-serif;
}

/* Efeito de vidro para cards */
.glass-effect {
    background-color: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-effect:hover {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

/* Estilizações do card */
.card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 1.5rem;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: 1rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* Estilizações de formulários */
.form-control {
    background-color: rgba(52, 58, 64, 0.8);
    border: 1px solid var(--border-color);
    color: white;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.form-control:focus {
    background-color: rgba(52, 58, 64, 0.9);
    color: white;
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.3);
    border-color: var(--primary-light);
}

.form-label {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

/* Botões */
.btn {
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    box-shadow: 0 4px 15px rgba(42, 118, 221, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(42, 118, 221, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    border: none;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, #34d880 0%, var(--secondary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(46, 204, 113, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #c0392b 100%);
    border: none;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #f65b4d 0%, var(--danger-color) 100%);
    transform: translateY(-2px);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #e67e22 100%);
    border: none;
    color: white;
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.3);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #fdac33 0%, var(--warning-color) 100%);
    transform: translateY(-2px);
    color: white;
}

/* Cards de estatísticas */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    margin-bottom: 2rem;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
}

.stats-card .icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.stats-card .value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stats-card .label {
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Personalização para diferentes cores de cards */
.stats-card.success {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.stats-card.warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #e67e22 100%);
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.3);
}

.stats-card.danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #c0392b 100%);
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

/* Alertas */
.alert {
    border: none;
    border-radius: 10px;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.2);
    color: #fff;
    border-left: 4px solid var(--danger-color);
}

.alert-success {
    background-color: rgba(46, 204, 113, 0.2);
    color: #fff;
    border-left: 4px solid var(--secondary-color);
}

.alert-warning {
    background-color: rgba(243, 156, 18, 0.2);
    color: #fff;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background-color: rgba(52, 152, 219, 0.2);
    color: #fff;
    border-left: 4px solid var(--primary-color);
}

/* Tabelas */
.table {
    color: var(--text-light);
    margin-bottom: 0;
}

.table thead th {
    background-color: rgba(52, 58, 64, 0.8);
    border-bottom: none;
    color: var(--text-light);
    padding: 0.75rem 1rem;
    font-weight: 600;
}

.table tbody td {
    padding: 0.75rem 1rem;
    border-color: rgba(255, 255, 255, 0.05);
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.1);
}

/* Badges */
.badge {
    padding: 0.5em 0.8em;
    font-weight: 500;
    border-radius: 6px;
    font-size: 0.8em;
}

/* Loading spinner e overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    color: white;
}

.loading-spinner {
    width: 80px;
    height: 80px;
    border: 8px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top: 8px solid var(--secondary-color);
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

/* Aviso de limite importante */
.important-warning {
    border-radius: 10px;
    padding: 1.2rem;
    margin-bottom: 1.5rem;
    background-color: rgba(231, 76, 60, 0.2);
    border-left: 5px solid var(--danger-color);
    font-weight: bold;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(231, 76, 60, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
    }
}

/* Header do admin */
.admin-header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    padding: 1.5rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Responsividade */
@media (max-width: 768px) {
    .stats-card {
        margin-bottom: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
    }
}