/**
 * NextDesk Admin - CSS Base
 * Estilos globais para o painel administrativo
 */

:root {
    /* Cores principais */
    --nd-primary: #667eea;
    --nd-primary-dark: #5a6fd6;
    --nd-secondary: #764ba2;
    --nd-dark: #1e1e2d;
    --nd-dark-light: #2d2d44;
    
    /* Cores de status */
    --nd-success: #198754;
    --nd-warning: #ffc107;
    --nd-danger: #dc3545;
    --nd-info: #0dcaf0;
    
    /* Cores neutras */
    --nd-gray-100: #f8f9fa;
    --nd-gray-200: #e9ecef;
    --nd-gray-300: #dee2e6;
    --nd-gray-400: #ced4da;
    --nd-gray-500: #adb5bd;
    --nd-gray-600: #7e8299;
    --nd-gray-700: #495057;
    --nd-gray-800: #343a40;
    --nd-gray-900: #212529;
    
    /* Tipografia */
    --nd-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --nd-font-size-base: 0.9375rem;
    --nd-line-height: 1.5;
    
    /* Espaçamentos */
    --nd-spacing: 1rem;
    --nd-border-radius: 0.5rem;
    --nd-border-radius-lg: 1rem;
    
    /* Sombras */
    --nd-shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --nd-shadow: 0 4px 6px rgba(0,0,0,0.1);
    --nd-shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --nd-shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    
    /* Transições */
    --nd-transition: all 0.2s ease-in-out;
}

* {
    font-family: var(--nd-font-family);
}

body {
    font-size: var(--nd-font-size-base);
    line-height: var(--nd-line-height);
    color: var(--nd-gray-900);
    background-color: var(--nd-gray-100);
}

/* Links */
a {
    color: var(--nd-primary);
    text-decoration: none;
    transition: var(--nd-transition);
}

a:hover {
    color: var(--nd-primary-dark);
}

/* Botões customizados */
.btn-nd-primary {
    background: linear-gradient(135deg, var(--nd-primary) 0%, var(--nd-secondary) 100%);
    border: none;
    color: #fff;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: var(--nd-border-radius);
    transition: var(--nd-transition);
}

.btn-nd-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--nd-shadow-lg);
    color: #fff;
}

.btn-nd-primary:disabled {
    opacity: 0.7;
    transform: none;
}

/* Cards */
.card-nd {
    background: #fff;
    border: none;
    border-radius: var(--nd-border-radius-lg);
    box-shadow: var(--nd-shadow);
    transition: var(--nd-transition);
}

.card-nd:hover {
    box-shadow: var(--nd-shadow-lg);
}

/* Form controls */
.form-control-nd {
    border: 1px solid var(--nd-gray-300);
    border-radius: var(--nd-border-radius);
    padding: 0.75rem 1rem;
    font-size: var(--nd-font-size-base);
    transition: var(--nd-transition);
}

.form-control-nd:focus {
    border-color: var(--nd-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    outline: none;
}

.form-control-nd.is-invalid {
    border-color: var(--nd-danger);
}

/* Labels */
.form-label-nd {
    font-weight: 500;
    color: var(--nd-gray-700);
    margin-bottom: 0.5rem;
}

/* Alerts */
.alert-nd {
    border: none;
    border-radius: var(--nd-border-radius);
    padding: 1rem 1.25rem;
}

/* Badges */
.badge-nd {
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: var(--nd-border-radius);
}

/* Tables */
.table-nd {
    background: #fff;
    border-radius: var(--nd-border-radius);
    overflow: hidden;
}

.table-nd thead th {
    background: var(--nd-gray-100);
    border-bottom: 2px solid var(--nd-gray-200);
    font-weight: 600;
    color: var(--nd-gray-700);
    padding: 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table-nd tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--nd-gray-200);
}

.table-nd tbody tr:hover {
    background-color: var(--nd-gray-100);
}

/* Loading spinner */
.spinner-nd {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Toast notifications */
.toast-nd {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    min-width: 300px;
}

/* Utilities */
.text-muted-nd {
    color: var(--nd-gray-600) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--nd-primary) 0%, var(--nd-secondary) 100%);
}

.bg-gradient-dark {
    background: linear-gradient(135deg, var(--nd-dark) 0%, var(--nd-dark-light) 100%);
}

/* Avatars */
.avatar-lg {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--nd-primary) 0%, var(--nd-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    font-weight: 600;
}

.avatar-initials {
    text-transform: uppercase;
}

/* Modal customizations */
.modal-content {
    border: none;
    border-radius: var(--nd-border-radius-lg);
    box-shadow: var(--nd-shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--nd-gray-200);
    padding: 1.25rem 1.5rem;
}

.modal-title {
    font-weight: 600;
    color: var(--nd-dark);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--nd-gray-200);
    padding: 1rem 1.5rem;
}