/**
 * SISTUR Design System
 * Sistema de design profissional com variáveis CSS e componentes reutilizáveis
 *
 * @package SISTUR
 * @version 1.2.0
 */

/* ========================================
   1. CSS VARIABLES (Design Tokens)
   ======================================== */
:root {
    /* Cores Primárias */
    --sistur-primary: #2271b1;
    --sistur-primary-hover: #135e96;
    --sistur-primary-light: #e5f3ff;
    --sistur-primary-dark: #0a4d7f;

    /* Cores Secundárias */
    --sistur-secondary: #667eea;
    --sistur-secondary-hover: #5a67d8;

    /* Cores de Status */
    --sistur-success: #00a32a;
    --sistur-success-light: #e7f7ec;
    --sistur-warning: #f0b429;
    --sistur-warning-light: #fff8e5;
    --sistur-error: #d63638;
    --sistur-error-light: #fde7e7;
    --sistur-info: #2271b1;
    --sistur-info-light: #e5f3ff;

    /* Cores Neutras */
    --sistur-white: #ffffff;
    --sistur-gray-50: #f9fafb;
    --sistur-gray-100: #f3f4f6;
    --sistur-gray-200: #e5e7eb;
    --sistur-gray-300: #d1d5db;
    --sistur-gray-400: #9ca3af;
    --sistur-gray-500: #6b7280;
    --sistur-gray-600: #4b5563;
    --sistur-gray-700: #374151;
    --sistur-gray-800: #1f2937;
    --sistur-gray-900: #111827;

    /* Tipografia */
    --sistur-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --sistur-font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

    /* Tamanhos de Fonte */
    --sistur-text-xs: 0.75rem;    /* 12px */
    --sistur-text-sm: 0.875rem;   /* 14px */
    --sistur-text-base: 1rem;     /* 16px */
    --sistur-text-lg: 1.125rem;   /* 18px */
    --sistur-text-xl: 1.25rem;    /* 20px */
    --sistur-text-2xl: 1.5rem;    /* 24px */
    --sistur-text-3xl: 1.875rem;  /* 30px */
    --sistur-text-4xl: 2.25rem;   /* 36px */

    /* Pesos de Fonte */
    --sistur-font-normal: 400;
    --sistur-font-medium: 500;
    --sistur-font-semibold: 600;
    --sistur-font-bold: 700;

    /* Espaçamentos */
    --sistur-space-1: 0.25rem;   /* 4px */
    --sistur-space-2: 0.5rem;    /* 8px */
    --sistur-space-3: 0.75rem;   /* 12px */
    --sistur-space-4: 1rem;      /* 16px */
    --sistur-space-5: 1.25rem;   /* 20px */
    --sistur-space-6: 1.5rem;    /* 24px */
    --sistur-space-8: 2rem;      /* 32px */
    --sistur-space-10: 2.5rem;   /* 40px */
    --sistur-space-12: 3rem;     /* 48px */
    --sistur-space-16: 4rem;     /* 64px */

    /* Border Radius */
    --sistur-radius-sm: 0.25rem;  /* 4px */
    --sistur-radius-md: 0.375rem; /* 6px */
    --sistur-radius-lg: 0.5rem;   /* 8px */
    --sistur-radius-xl: 0.75rem;  /* 12px */
    --sistur-radius-2xl: 1rem;    /* 16px */
    --sistur-radius-full: 9999px;

    /* Sombras */
    --sistur-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --sistur-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sistur-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --sistur-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --sistur-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transições */
    --sistur-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --sistur-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --sistur-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-Index */
    --sistur-z-dropdown: 1000;
    --sistur-z-sticky: 1020;
    --sistur-z-fixed: 1030;
    --sistur-z-modal-backdrop: 1040;
    --sistur-z-modal: 1050;
    --sistur-z-popover: 1060;
    --sistur-z-tooltip: 1070;
    --sistur-z-toast: 1080;
}

/* ========================================
   2. RESET & BASE STYLES
   ======================================== */
.sistur-container * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.sistur-container {
    font-family: var(--sistur-font-family);
    font-size: var(--sistur-text-base);
    line-height: 1.5;
    color: var(--sistur-gray-900);
}

/* ========================================
   3. COMPONENTES - BOTÕES
   ======================================== */
.sistur-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--sistur-space-2) var(--sistur-space-4);
    font-size: var(--sistur-text-sm);
    font-weight: var(--sistur-font-medium);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    border: 1px solid transparent;
    border-radius: var(--sistur-radius-md);
    cursor: pointer;
    transition: all var(--sistur-transition-base);
    user-select: none;
    gap: var(--sistur-space-2);
}

.sistur-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(34, 113, 177, 0.25);
}

.sistur-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Variantes de Botões */
.sistur-btn-primary {
    background-color: var(--sistur-primary);
    color: var(--sistur-white);
}

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

.sistur-btn-secondary {
    background-color: var(--sistur-white);
    color: var(--sistur-gray-700);
    border-color: var(--sistur-gray-300);
}

.sistur-btn-secondary:hover {
    background-color: var(--sistur-gray-50);
    border-color: var(--sistur-gray-400);
}

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

.sistur-btn-success:hover {
    background-color: #008a24;
}

.sistur-btn-danger {
    background-color: var(--sistur-error);
    color: var(--sistur-white);
}

.sistur-btn-danger:hover {
    background-color: #b32d2e;
}

/* Tamanhos de Botões */
.sistur-btn-sm {
    padding: var(--sistur-space-1) var(--sistur-space-3);
    font-size: var(--sistur-text-xs);
}

.sistur-btn-lg {
    padding: var(--sistur-space-3) var(--sistur-space-6);
    font-size: var(--sistur-text-base);
}

.sistur-btn-icon {
    padding: var(--sistur-space-2);
    width: 2.5rem;
    height: 2.5rem;
}

/* ========================================
   4. COMPONENTES - CARDS
   ======================================== */
.sistur-card {
    background: var(--sistur-white);
    border: 1px solid var(--sistur-gray-200);
    border-radius: var(--sistur-radius-lg);
    box-shadow: var(--sistur-shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--sistur-transition-base);
}

.sistur-card:hover {
    box-shadow: var(--sistur-shadow-md);
}

.sistur-card-header {
    padding: var(--sistur-space-4) var(--sistur-space-6);
    border-bottom: 1px solid var(--sistur-gray-200);
    background-color: var(--sistur-gray-50);
}

.sistur-card-title {
    font-size: var(--sistur-text-lg);
    font-weight: var(--sistur-font-semibold);
    color: var(--sistur-gray-900);
    margin: 0;
}

.sistur-card-body {
    padding: var(--sistur-space-6);
}

.sistur-card-footer {
    padding: var(--sistur-space-4) var(--sistur-space-6);
    border-top: 1px solid var(--sistur-gray-200);
    background-color: var(--sistur-gray-50);
}

/* Card de Estatística */
.sistur-stat-card {
    display: flex;
    flex-direction: column;
    gap: var(--sistur-space-2);
}

.sistur-stat-label {
    font-size: var(--sistur-text-sm);
    font-weight: var(--sistur-font-medium);
    color: var(--sistur-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sistur-stat-value {
    font-size: var(--sistur-text-3xl);
    font-weight: var(--sistur-font-bold);
    color: var(--sistur-gray-900);
}

.sistur-stat-change {
    font-size: var(--sistur-text-sm);
    display: flex;
    align-items: center;
    gap: var(--sistur-space-1);
}

.sistur-stat-change.positive {
    color: var(--sistur-success);
}

.sistur-stat-change.negative {
    color: var(--sistur-error);
}

/* ========================================
   5. COMPONENTES - FORMULÁRIOS
   ======================================== */
.sistur-form-group {
    margin-bottom: var(--sistur-space-4);
}

.sistur-form-label {
    display: block;
    margin-bottom: var(--sistur-space-2);
    font-size: var(--sistur-text-sm);
    font-weight: var(--sistur-font-medium);
    color: var(--sistur-gray-700);
}

.sistur-form-label-required::after {
    content: '*';
    color: var(--sistur-error);
    margin-left: var(--sistur-space-1);
}

.sistur-form-input,
.sistur-form-select,
.sistur-form-textarea {
    display: block;
    width: 100%;
    padding: var(--sistur-space-2) var(--sistur-space-3);
    font-size: var(--sistur-text-sm);
    line-height: 1.5;
    color: var(--sistur-gray-900);
    background-color: var(--sistur-white);
    border: 1px solid var(--sistur-gray-300);
    border-radius: var(--sistur-radius-md);
    transition: all var(--sistur-transition-base);
}

.sistur-form-input:focus,
.sistur-form-select:focus,
.sistur-form-textarea:focus {
    outline: none;
    border-color: var(--sistur-primary);
    box-shadow: 0 0 0 3px rgba(34, 113, 177, 0.1);
}

.sistur-form-input.error,
.sistur-form-select.error,
.sistur-form-textarea.error {
    border-color: var(--sistur-error);
}

.sistur-form-input.error:focus,
.sistur-form-select.error:focus,
.sistur-form-textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(214, 54, 56, 0.1);
}

.sistur-form-help {
    display: block;
    margin-top: var(--sistur-space-2);
    font-size: var(--sistur-text-xs);
    color: var(--sistur-gray-500);
}

.sistur-form-error {
    display: block;
    margin-top: var(--sistur-space-2);
    font-size: var(--sistur-text-xs);
    color: var(--sistur-error);
}

.sistur-form-success {
    display: block;
    margin-top: var(--sistur-space-2);
    font-size: var(--sistur-text-xs);
    color: var(--sistur-success);
}

/* ========================================
   6. COMPONENTES - BADGES
   ======================================== */
.sistur-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--sistur-space-1) var(--sistur-space-2);
    font-size: var(--sistur-text-xs);
    font-weight: var(--sistur-font-medium);
    line-height: 1;
    border-radius: var(--sistur-radius-full);
    white-space: nowrap;
}

.sistur-badge-success {
    background-color: var(--sistur-success-light);
    color: var(--sistur-success);
}

.sistur-badge-warning {
    background-color: var(--sistur-warning-light);
    color: #946c00;
}

.sistur-badge-error {
    background-color: var(--sistur-error-light);
    color: var(--sistur-error);
}

.sistur-badge-info {
    background-color: var(--sistur-info-light);
    color: var(--sistur-info);
}

.sistur-badge-neutral {
    background-color: var(--sistur-gray-100);
    color: var(--sistur-gray-700);
}

/* ========================================
   7. COMPONENTES - TABELAS
   ======================================== */
.sistur-table-container {
    overflow-x: auto;
    border-radius: var(--sistur-radius-lg);
    border: 1px solid var(--sistur-gray-200);
}

.sistur-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--sistur-text-sm);
}

.sistur-table thead {
    background-color: var(--sistur-gray-50);
}

.sistur-table th {
    padding: var(--sistur-space-3) var(--sistur-space-4);
    text-align: left;
    font-weight: var(--sistur-font-semibold);
    color: var(--sistur-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--sistur-text-xs);
    border-bottom: 1px solid var(--sistur-gray-200);
}

.sistur-table td {
    padding: var(--sistur-space-4);
    border-bottom: 1px solid var(--sistur-gray-200);
    color: var(--sistur-gray-900);
}

.sistur-table tbody tr:hover {
    background-color: var(--sistur-gray-50);
}

.sistur-table tbody tr:last-child td {
    border-bottom: none;
}

/* ========================================
   8. COMPONENTES - MODALS
   ======================================== */
.sistur-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--sistur-z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sistur-space-4);
    opacity: 0;
    transition: opacity var(--sistur-transition-base);
}

.sistur-modal-backdrop.active {
    opacity: 1;
}

.sistur-modal {
    background: var(--sistur-white);
    border-radius: var(--sistur-radius-xl);
    box-shadow: var(--sistur-shadow-2xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform var(--sistur-transition-base);
}

.sistur-modal-backdrop.active .sistur-modal {
    transform: scale(1);
}

.sistur-modal-header {
    padding: var(--sistur-space-6);
    border-bottom: 1px solid var(--sistur-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sistur-modal-title {
    font-size: var(--sistur-text-xl);
    font-weight: var(--sistur-font-semibold);
    color: var(--sistur-gray-900);
    margin: 0;
}

.sistur-modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--sistur-space-2);
    color: var(--sistur-gray-400);
    transition: color var(--sistur-transition-fast);
}

.sistur-modal-close:hover {
    color: var(--sistur-gray-600);
}

.sistur-modal-body {
    padding: var(--sistur-space-6);
    overflow-y: auto;
    flex: 1;
}

.sistur-modal-footer {
    padding: var(--sistur-space-6);
    border-top: 1px solid var(--sistur-gray-200);
    display: flex;
    gap: var(--sistur-space-3);
    justify-content: flex-end;
}

/* ========================================
   9. COMPONENTES - TOASTS/NOTIFICATIONS
   ======================================== */
.sistur-toast-container {
    position: fixed;
    top: var(--sistur-space-4);
    right: var(--sistur-space-4);
    z-index: var(--sistur-z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--sistur-space-3);
    max-width: 400px;
}

.sistur-toast {
    background: var(--sistur-white);
    border-radius: var(--sistur-radius-lg);
    box-shadow: var(--sistur-shadow-xl);
    padding: var(--sistur-space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--sistur-space-3);
    border-left: 4px solid;
    animation: sistur-slide-in 0.3s ease-out;
}

@keyframes sistur-slide-in {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.sistur-toast.sistur-toast-success {
    border-color: var(--sistur-success);
}

.sistur-toast.sistur-toast-error {
    border-color: var(--sistur-error);
}

.sistur-toast.sistur-toast-warning {
    border-color: var(--sistur-warning);
}

.sistur-toast.sistur-toast-info {
    border-color: var(--sistur-info);
}

.sistur-toast-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
}

.sistur-toast-content {
    flex: 1;
}

.sistur-toast-title {
    font-weight: var(--sistur-font-semibold);
    color: var(--sistur-gray-900);
    margin-bottom: var(--sistur-space-1);
    font-size: var(--sistur-text-sm);
}

.sistur-toast-message {
    color: var(--sistur-gray-600);
    font-size: var(--sistur-text-sm);
}

.sistur-toast-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--sistur-gray-400);
    flex-shrink: 0;
}

.sistur-toast-close:hover {
    color: var(--sistur-gray-600);
}

/* ========================================
   10. COMPONENTES - LOADING
   ======================================== */
.sistur-spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid var(--sistur-gray-200);
    border-top-color: var(--sistur-primary);
    border-radius: 50%;
    animation: sistur-spin 0.8s linear infinite;
}

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

.sistur-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--sistur-z-fixed);
}

.sistur-skeleton {
    background: linear-gradient(90deg, var(--sistur-gray-200) 25%, var(--sistur-gray-100) 50%, var(--sistur-gray-200) 75%);
    background-size: 200% 100%;
    animation: sistur-skeleton 1.5s ease-in-out infinite;
    border-radius: var(--sistur-radius-md);
}

@keyframes sistur-skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   11. UTILITÁRIOS
   ======================================== */
.sistur-text-center { text-align: center; }
.sistur-text-right { text-align: right; }
.sistur-text-left { text-align: left; }

.sistur-flex { display: flex; }
.sistur-flex-col { flex-direction: column; }
.sistur-items-center { align-items: center; }
.sistur-justify-between { justify-content: space-between; }
.sistur-justify-center { justify-content: center; }
.sistur-gap-2 { gap: var(--sistur-space-2); }
.sistur-gap-4 { gap: var(--sistur-space-4); }

.sistur-mt-4 { margin-top: var(--sistur-space-4); }
.sistur-mb-4 { margin-bottom: var(--sistur-space-4); }
.sistur-mr-2 { margin-right: var(--sistur-space-2); }
.sistur-ml-2 { margin-left: var(--sistur-space-2); }

.sistur-p-4 { padding: var(--sistur-space-4); }
.sistur-p-6 { padding: var(--sistur-space-6); }

.sistur-hidden { display: none; }
.sistur-visible { display: block; }

/* ========================================
   12. RESPONSIVIDADE
   ======================================== */
@media (max-width: 768px) {
    .sistur-modal {
        max-width: 100%;
        margin: var(--sistur-space-4);
    }

    .sistur-toast-container {
        left: var(--sistur-space-4);
        right: var(--sistur-space-4);
        max-width: none;
    }

    .sistur-table-container {
        font-size: var(--sistur-text-xs);
    }

    .sistur-card-body {
        padding: var(--sistur-space-4);
    }
}

@media (max-width: 480px) {
    :root {
        --sistur-text-base: 0.875rem;
        --sistur-text-lg: 1rem;
        --sistur-text-xl: 1.125rem;
    }

    .sistur-btn {
        width: 100%;
        justify-content: center;
    }
}