/* ============================================
   MDS Brain — Design System Portal Conexão
   ============================================ */

:root {
    --primary: #0066cc;
    --primary-light: #e6f0ff;
    --primary-dark: #0052a3;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    --gray-50: #f8f9fa;
    --gray-100: #e9ecef;
    --gray-200: #dee2e6;
    --gray-300: #c8c8c8;
    --gray-500: #6c757d;
    --gray-700: #495057;
    --gray-900: #212529;
    --white: #ffffff;
    --border-radius: 12px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
    --transition: 0.2s ease-out;
    --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-stack);
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
    display: grid;
    grid-template-columns: 280px 1fr;
    height: 100vh;
    overflow: hidden;
    transition: background-color var(--transition);
}

/* High Contrast Mode */
@media (prefers-contrast: more) {
    body {
        --gray-300: #999;
        --gray-500: #555;
        --gray-700: #333;
    }
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: var(--white);
    padding: 8px 16px;
    text-decoration: none;
    z-index: 100;
    border-radius: 0 0 var(--border-radius) 0;
}

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

/* ============================================
   SIDEBAR NAVIGATION
   ============================================ */

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    background: var(--gray-50);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    gap: 24px;
}

.sidebar__header {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-200);
}

.logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.version {
    font-size: 11px;
    color: var(--gray-500);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.tabs-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.tab-btn {
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--gray-700);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: background-color var(--transition), color var(--transition);
    font-family: inherit;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    min-height: 44px;
    display: flex;
    align-items: center;
}

/* Touch-friendly buttons */
@media (pointer: coarse) {
    .tab-btn {
        min-height: 48px;
        padding: 12px 14px;
    }
}

.tab-btn:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.tab-btn.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    border-left: 3px solid var(--primary);
    padding-left: 9px;
}

.tab-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}

.sidebar__footer {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
}

.sync-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--gray-700);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.online {
    background: var(--success);
    animation: pulse 2s infinite;
}

.status-dot.offline {
    background: var(--danger);
}

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

.btn-sync {
    padding: 8px 12px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition);
    font-family: inherit;
}

.btn-sync:hover {
    background: var(--primary-dark);
}

.btn-sync:active {
    transform: scale(0.98);
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */

.main {
    overflow-y: auto;
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.content {
    flex: 1;
}

h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 24px 0 16px 0;
}

h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
    margin: 16px 0 12px 0;
}

p {
    font-size: 14px;
    color: var(--gray-700);
    margin-bottom: 12px;
}

/* ============================================
   COMPONENTS
   ============================================ */

/* Stat Cards */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition), transform var(--transition);
}

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

.stat-card__label {
    font-size: 12px;
    color: var(--gray-500);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-card__value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-card__icon {
    font-size: 32px;
    margin-bottom: 12px;
}

/* Grid Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 16px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: box-shadow var(--transition), transform var(--transition);
    border-left: 4px solid var(--gray-200);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-left-color: var(--primary);
}

.card__header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.card__icon {
    font-size: 24px;
    flex-shrink: 0;
}

.card__title {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.card__subtitle {
    font-size: 12px;
    color: var(--gray-500);
    margin: 4px 0 0 0;
}

.card__description {
    font-size: 13px;
    color: var(--gray-700);
    line-height: 1.5;
    margin: 12px 0 0 0;
}

.card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
}

.badge.success {
    background: #d4edda;
    color: #155724;
}

.badge.danger {
    background: #f8d7da;
    color: #721c24;
}

.badge.warning {
    background: #fff3cd;
    color: #856404;
}

/* Tables */
.table-container {
    margin-top: 20px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th {
    background: var(--gray-100);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-900);
    border-bottom: 2px solid var(--gray-200);
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--gray-200);
}

tr:hover {
    background: var(--gray-50);
}

/* Filters */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 16px 0;
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.filter-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--gray-700);
    cursor: pointer;
}

.checkbox input {
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
    font-family: inherit;
}

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

.btn:active {
    transform: scale(0.98);
}

.btn.secondary {
    background: var(--gray-200);
    color: var(--gray-900);
}

.btn.secondary:hover {
    background: var(--gray-300);
}

.btn.danger {
    background: var(--danger);
}

.btn.danger:hover {
    background: #c82333;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Search */
.search-box {
    display: flex;
    gap: 12px;
    margin: 16px 0;
}

.search-box input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* ============================================
   MODAL
   ============================================ */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal__content {
    position: relative;
    background: var(--white);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s;
}

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

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    background: var(--white);
}

.modal__header h2 {
    margin: 0;
    font-size: 20px;
}

.modal__close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-500);
    transition: color var(--transition);
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal__close:hover {
    color: var(--gray-900);
}

.modal__body {
    padding: 24px;
}

/* ============================================
   LOADING STATE
   ============================================ */

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    gap: 16px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   RESPONSIVE
   ============================================ */

/* Mobile Menu Toggle */
.sidebar__toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    color: var(--gray-700);
}

.sidebar__toggle:focus-visible {
    outline: 2px solid var(--primary);
}

@media (max-width: 768px) {
    body {
        grid-template-columns: 1fr;
        height: auto;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 50px;
        width: 280px;
        height: calc(100vh - 50px);
        overflow-y: auto;
        border-right: 1px solid var(--gray-200);
        border-bottom: none;
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        padding: 12px;
        background: var(--gray-50);
        transform: translateX(-100%);
        transition: transform var(--transition);
        z-index: 999;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .sidebar__header {
        border: none;
        border-bottom: 1px solid var(--gray-200);
        padding-bottom: 16px;
        flex-direction: column;
        align-items: flex-start;
    }

    .sidebar__toggle {
        display: block;
        position: fixed;
        top: 12px;
        left: 12px;
        z-index: 1001;
    }

    .tabs-nav {
        flex-direction: column;
        flex: 1;
        overflow-x: hidden;
    }

    .tab-btn {
        white-space: normal;
        flex-shrink: 0;
        width: 100%;
    }

    .sidebar__footer {
        display: flex;
        border-top: 1px solid var(--gray-200);
        padding-top: 16px;
        flex-direction: column;
    }

    .main {
        padding: 12px;
        gap: 16px;
        margin-top: 50px;
    }

    .grid {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: 1fr;
    }

    .modal__content {
        width: 95%;
        max-height: 95vh;
    }

    h1 {
        font-size: 24px;
    }

    .search-box {
        flex-direction: column;
    }

    .search-box input {
        width: 100%;
    }

    table {
        font-size: 12px;
    }

    th, td {
        padding: 8px;
    }
}

@media (max-width: 480px) {
    .main {
        padding: 8px;
    }

    h1 {
        font-size: 20px;
    }

    .card {
        padding: 12px;
    }

    .grid {
        gap: 12px;
    }

    .modal__header {
        padding: 16px;
    }

    .modal__body {
        padding: 16px;
    }
}

/* ============================================
   INTRO TAB STYLES
   ============================================ */

.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.rule-card {
    background: var(--white);
    border-left: 4px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 16px;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.rule-card.crítica {
    border-left-color: var(--danger);
}

.rule-card.alta {
    border-left-color: var(--warning);
}

.rule-card.média {
    border-left-color: var(--info);
}

.rule-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
    gap: 12px;
}

.rule-header h3 {
    font-size: 16px;
    margin: 0;
    color: var(--gray-900);
}

.priority-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.priority-badge.crítica {
    background: #ffe6e6;
    color: var(--danger);
}

.priority-badge.alta {
    background: #fff3cd;
    color: #856404;
}

.priority-badge.média {
    background: #d1ecf1;
    color: #0c5460;
}

.rule-card p {
    font-size: 14px;
    color: var(--gray-700);
    margin: 0 0 12px 0;
}

.rule-status {
    display: inline-block;
    font-size: 12px;
    padding: 4px 8px;
    background: var(--gray-100);
    border-radius: 4px;
    color: var(--gray-700);
}

.preferences-table {
    margin: 20px 0;
    overflow-x: auto;
}

.preferences-table table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.preferences-table thead {
    background: var(--primary-light);
    color: var(--primary);
}

.preferences-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--primary);
}

.preferences-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-100);
}

.preferences-table tr:hover {
    background: var(--gray-50);
}

.preferences-table code {
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 12px;
}

.card.error {
    border-left: 4px solid var(--danger);
    background: #ffe6e6;
    color: var(--danger);
}

.card.info {
    border-left: 4px solid var(--info);
    background: #e7f3ff;
    color: var(--info);
}

pre {
    background: var(--gray-50);
    border-left: 4px solid var(--primary);
    padding: 16px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: 12px 0;
}

code {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 12px;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* ============================================
   BUTTONS & ACTIONS
   ============================================ */

.btn-primary,
.btn-secondary,
.btn-danger,
.btn-small {
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-900);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

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

.btn-danger:hover {
    background: #c82333;
}

.btn-small {
    padding: 4px 8px;
    font-size: 12px;
    background: var(--gray-200);
}

.btn-small:hover {
    background: var(--gray-300);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #1a1a1a;
        --gray-100: #2d2d2d;
        --gray-200: #404040;
        --gray-500: #a0a0a0;
        --gray-700: #c0c0c0;
        --gray-900: #e0e0e0;
        --white: #121212;
    }

    .card,
    .stat-card,
    .modal__content {
        background: #1e1e1e;
    }

    table tr:hover {
        background: #2a2a2a;
    }
}