/**
 * Design System - SGAD
 * Sistema de design completo com variáveis CSS, componentes e utilitários
 */

:root {
    /* Cores Primárias */
    --color-primary: #0d6efd;
    --color-primary-dark: #0a58ca;
    --color-primary-light: #6ea8fe;
    
    /* Cores Secundárias */
    --color-secondary: #6c757d;
    --color-success: #198754;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    --color-info: #0dcaf0;
    
    /* Cores de Fundo */
    --bg-body: #f8f9fa;
    --bg-card: #ffffff;
    --bg-hover: #f0f0f0;
    
    /* Cores de Texto */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    
    /* Bordas */
    --border-color: #dee2e6;
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-sm: 0.25rem;
    
    /* Sombras */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Espaçamentos */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 3rem;
    
    /* Transições */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Tipografia */
    --font-family-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Modo Escuro */
[data-theme="dark"] {
    --bg-body: #121212;
    --bg-card: #1e1e1e;
    --bg-hover: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #404040;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.5);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.9);
}

[data-theme="dark"] body {
    background-color: var(--bg-body);
    color: var(--text-primary);
}

[data-theme="dark"] .card {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .navbar-dark {
    background-color: #0d6efd !important;
}

[data-theme="dark"] .table {
    color: var(--text-primary);
}

[data-theme="dark"] .table-hover tbody tr:hover {
    background-color: var(--bg-hover);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--bg-card);
    border-color: var(--color-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-content {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-menu {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

/* Componentes Base */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.btn {
    transition: all var(--transition-fast);
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-medium);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(0);
}

/* Animações */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

.animate-slide-in {
    animation: slideIn var(--transition-base);
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Transições Suaves */
.transition-all {
    transition: all var(--transition-base);
}

.transition-fast {
    transition: all var(--transition-fast);
}

.transition-slow {
    transition: all var(--transition-slow);
}

/* Focus States (Acessibilidade) */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

.btn:focus-visible {
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Skip Link (Acessibilidade) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Responsividade Aprimorada */
@media (max-width: 576px) {
    :root {
        --font-size-base: 0.9rem;
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
    }
    
    .card {
        margin-bottom: var(--spacing-md);
    }
}

@media (min-width: 992px) {
    .container-fluid {
        max-width: 1400px;
    }
}

/* Utilitários de Acessibilidade */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Melhorias de Contraste */
.text-high-contrast {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

/* Indicadores de Estado */
.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--spacing-xs);
}

.status-indicator.active {
    background-color: var(--color-success);
    box-shadow: 0 0 0 2px rgba(25, 135, 84, 0.2);
}

.status-indicator.inactive {
    background-color: var(--color-secondary);
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}