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

:root {
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #eff6ff;
  --secondary: #64748b;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #0ea5e9;
  
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 6px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 20px 50px rgba(15, 23, 42, 0.15);
  
  --radius: 8px;
  --radius-lg: 12px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 14px;
}

/* ==================== LOGIN (CLEAN - SEM FUNDO CHAMATIVO) ==================== */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
}

.login-container {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.login-logo-icon {
  font-size: 2.5rem;
  display: block;
}

.login-logo h1 {
  font-size: 1.8rem;
  color: var(--text-primary);
  font-weight: 700;
  text-align: left;
}

.login-tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: left;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-error {
  margin-top: 16px;
  padding: 12px;
  background: rgba(239, 68, 68, 0.08);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius);
  color: var(--danger);
  font-size: 0.9rem;
}

.login-footer {
  margin-top: 24px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.8rem;
}

/* ==================== LAYOUT PRINCIPAL ==================== */

.app-wrapper {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

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

.sidebar {
  width: 280px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.logo-icon { font-size: 1.5rem; }

.logo-container h1 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.sidebar-nav {
  flex: 1;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
  border-left: 3px solid transparent;
  font-weight: 500;
}

.nav-item:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-left-color: var(--primary);
}

.nav-item.active {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-left-color: var(--primary);
}

.nav-icon { font-size: 1.2rem; min-width: 24px; }
.nav-label { flex: 1; font-size: 0.95rem; }

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

.connection-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-dot.connected { background: var(--success); }
.status-dot.disconnected { background: var(--danger); }
.status-dot.connecting { background: var(--warning); }

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

.status-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.btn-diagnostic {
  padding: 8px 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 500;
  font-size: 0.85rem;
  transition: var(--transition);
  width: 100%;
}

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

.btn-logout {
  background: rgba(239, 68, 68, 0.08);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.2);
}

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

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

/* ==================== MAIN CONTAINER ==================== */

.main-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.content-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

/* ==================== HEADER ==================== */

.header {
  padding: 24px 32px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-left h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.header-left .subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.header-right {
  display: flex;
  gap: 12px;
  align-items: center;
}

.mobile-only {
  display: none;
}

/* ==================== CONFIG PANEL ==================== */

.config-panel {
  padding: 24px 32px;
  background: var(--bg);
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.config-item {
  background: var(--bg-card);
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.config-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.config-value {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
  word-break: break-all;
}

/* ==================== TABS CONTAINER ==================== */

.tabs-container {
  flex: 1;
  padding: 24px 32px;
  overflow-y: auto;
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-content.active { display: block; }

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

/* ==================== CARDS ==================== */

.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  margin-bottom: 20px;
}

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

.card-header {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.card-header h3 {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.card-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==================== INSTANCES GRID - 2 COLUNAS ==================== */

.instances-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.instance-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

.instance-card.connected { border-left: 4px solid var(--success); }
.instance-card.disconnected { border-left: 4px solid var(--danger); }
.instance-card.connecting { border-left: 4px solid var(--warning); }

.instance-card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 16px;
  gap: 12px;
}

.instance-info { flex: 1; min-width: 0; }

.instance-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.instance-id {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: monospace;
  overflow: hidden;
  text-overflow: ellipsis;
}

.instance-status-badge {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.instance-status-badge.connected {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.instance-status-badge.disconnected {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.instance-status-badge.connecting {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  animation: pulse 2s infinite;
}

.instance-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 12px;
  background: var(--bg);
  border-radius: var(--radius);
}

.instance-profile-img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  flex-shrink: 0;
}

.instance-profile-placeholder {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary);
  flex-shrink: 0;
}

.instance-profile-info { flex: 1; min-width: 0; }

.instance-profile-name {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.instance-profile-owner {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: monospace;
}

.instance-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  padding: 12px;
  background: var(--bg);
  border-radius: var(--radius);
}

.instance-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  gap: 8px;
}

.instance-detail-label {
  color: var(--text-secondary);
  font-weight: 500;
  flex-shrink: 0;
}

.instance-detail-value {
  color: var(--text-primary);
  font-weight: 600;
  font-family: monospace;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.instance-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.instance-action-btn {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.instance-action-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
}

.instance-action-btn.danger { color: var(--danger); }
.instance-action-btn.danger:hover {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.05);
}

.instance-action-btn.success { color: var(--success); }
.instance-action-btn.success:hover {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

.instance-action-btn.warning { color: var(--warning); }
.instance-action-btn.warning:hover {
  border-color: var(--warning);
  background: rgba(245, 158, 11, 0.05);
}

.instance-card-footer {
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  gap: 8px;
}

.instance-set-active {
  padding: 6px 12px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.instance-set-active:hover { background: var(--primary-dark); }

.instance-set-active.active {
  background: var(--success);
  cursor: default;
}

/* QR Code Modal */
.qrcode-container { text-align: center; padding: 20px; }

.qrcode-image {
  max-width: 300px;
  width: 100%;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  margin: 16px auto;
  display: block;
}

.paircode-display {
  background: var(--bg);
  padding: 16px;
  border-radius: var(--radius);
  font-size: 2rem;
  font-weight: 700;
  font-family: monospace;
  letter-spacing: 4px;
  color: var(--primary);
  margin: 16px 0;
  text-align: center;
}

/* ==================== FORM ELEMENTS ==================== */

.form-section { margin-bottom: 28px; }

.section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full { grid-column: 1 / -1; }

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="datetime-local"],
.form-group textarea,
.form-group select {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  background: white;
  color: var(--text-primary);
  transition: var(--transition);
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group small {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--primary);
}

.divider {
  text-align: center;
  color: var(--text-tertiary);
  margin: 20px 0;
  font-size: 0.9rem;
}

/* ==================== UPLOAD AREA ==================== */

.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg);
  position: relative;
  margin-bottom: 16px;
}

.upload-area:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.upload-area input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-icon { font-size: 2.5rem; display: block; margin-bottom: 12px; }

.manual-input { margin-top: 16px; }

.manual-input label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.manual-input textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 0.9rem;
}

.numbers-preview {
  background: var(--primary-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-top: 16px;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.badge {
  background: var(--primary);
  color: white;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

.numbers-list {
  max-height: 150px;
  overflow-y: auto;
  background: white;
  padding: 8px;
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.numbers-list .number-item {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 4px 8px;
  border-radius: 4px;
  margin: 2px;
  font-size: 0.8rem;
  font-family: monospace;
}

/* ==================== BUTTONS ==================== */

.btn {
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.btn:hover { transform: translateY(-1px); }

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

.btn-secondary {
  background: var(--bg);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--text-secondary);
}

.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #059669; }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }

.btn-warning { background: var(--warning); color: white; }
.btn-warning:hover { background: #d97706; }

.btn-info { background: var(--info); color: white; }
.btn-info:hover { background: #0284c7; }

.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

.btn-large {
  width: 100%;
  padding: 12px 24px;
  font-size: 1rem;
  margin-top: 20px;
  justify-content: center;
}

/* ==================== DASHBOARD ==================== */

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  gap: 16px;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.stat-icon { font-size: 2rem; min-width: 50px; text-align: center; }

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.quick-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.quick-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: var(--shadow);
}

.quick-btn span { font-size: 2rem; min-width: 50px; text-align: center; }
.quick-btn p { margin: 0 0 4px; color: var(--text-primary); font-weight: 600; }
.quick-btn small { color: var(--text-secondary); font-size: 0.8rem; }

/* ==================== RESULT BOX ==================== */

.result-box {
  margin-top: 20px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--primary);
  max-height: 400px;
  overflow-y: auto;
}

.result-box.success { border-left-color: var(--success); background: rgba(16, 185, 129, 0.05); }
.result-box.error { border-left-color: var(--danger); background: rgba(239, 68, 68, 0.05); }
.result-box.warning { border-left-color: var(--warning); background: rgba(245, 158, 11, 0.05); }

.result-box pre {
  background: var(--text-primary);
  color: #fff;
  padding: 12px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.4;
  margin: 0;
}

.result-box .placeholder {
  color: var(--text-tertiary);
  font-style: italic;
  text-align: center;
}

/* ==================== CAMPAIGNS LIST ==================== */

.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.campaigns-list { display: grid; gap: 16px; }

.campaign-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition);
}

.campaign-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.campaign-item.status-sending { border-left-color: var(--info); }
.campaign-item.status-paused { border-left-color: var(--warning); }
.campaign-item.status-done { border-left-color: var(--success); }

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

.campaign-title { font-weight: 600; color: var(--text-primary); font-size: 1rem; }

.campaign-status {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  white-space: nowrap;
}

.campaign-status.scheduled { background: rgba(59, 130, 246, 0.1); color: var(--primary); }
.campaign-status.sending { background: rgba(6, 182, 212, 0.1); color: var(--info); animation: pulse 2s infinite; }
.campaign-status.paused { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.campaign-status.done { background: rgba(16, 185, 129, 0.1); color: var(--success); }

.campaign-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.stat-item {
  background: var(--bg-card);
  padding: 10px;
  border-radius: var(--radius);
  text-align: center;
}

.stat-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

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

/* ==================== MESSAGES LIST ==================== */

.messages-list { display: grid; gap: 12px; margin-bottom: 12px; }

.message-item {
  background: var(--bg);
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: relative;
}

.message-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.message-item-header h4 { margin: 0; color: var(--primary); font-size: 0.95rem; }

.remove-message-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--danger);
  color: white;
  border: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(30, 41, 59, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 20px;
  backdrop-filter: blur(2px);
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 { margin: 0; color: var(--text-primary); font-size: 1.25rem; }

.modal-close {
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1;
}

.modal-body { padding: 20px; }

/* Confirm Modal (substitui alert/confirm) */
.confirm-modal-content {
  text-align: center;
  padding: 10px 0;
}

.confirm-modal-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.confirm-modal-message {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.confirm-modal-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.confirm-modal-actions .btn {
  min-width: 120px;
  justify-content: center;
}

/* ==================== TOAST ==================== */

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 400px;
}

.toast {
  background: var(--bg-card);
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInRight 0.3s ease;
  border-left: 3px solid var(--primary);
  font-size: 0.9rem;
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

@keyframes slideInRight {
  from { transform: translateX(400px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

@media (max-width: 1200px) {
  .instances-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 999;
    transform: translateX(-100%);
  }

  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: block; }
  .mobile-only { display: block; }
  .sidebar-overlay.active { display: block; }
  .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar { width: 280px; }

  .header {
    padding: 16px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .header-right { width: 100%; flex-wrap: wrap; }
  .header-right .btn, .header-right select { flex: 1; }
  .tabs-container { padding: 16px; }
  .config-panel { padding: 16px; }
  .card { padding: 20px; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .quick-actions { grid-template-columns: 1fr; }
  
  /* Grid de instâncias: 1 coluna em mobile */
  .instances-grid { grid-template-columns: 1fr; }
  .instance-actions { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .card { padding: 16px; }
  .upload-area { padding: 24px; }
  .upload-icon { font-size: 2rem; }
  .login-container { padding: 28px 20px; }
  .login-logo h1 { font-size: 1.5rem; }
}