/* =========================================================
   NexusChat - WhatsApp Web Clone Design System
   Modern Dark & Light Theme with Authentic WhatsApp Aesthetics
   ========================================================= */

:root {
  /* WhatsApp Dark Theme Colors (Default) */
  --bg-app: #111b21;
  --bg-sidebar: #111b21;
  --bg-header: #202c33;
  --bg-chat: #0b141a;
  --bg-input-bar: #202c33;
  --bg-input: #2a3942;
  --bg-search: #202c33;
  --bg-hover: #202c33;
  --bg-active: #2a3942;
  --bg-card: #1f2c34;
  --bg-modal: #1f2c34;
  --border-color: #222d34;
  --border-subtle: #2a3942;

  /* Accent & Messaging */
  --wa-green: #00a884;
  --wa-green-hover: #02906f;
  --wa-green-light: #25d366;
  --wa-green-dim: rgba(0, 168, 132, 0.15);
  --bubble-outgoing: #005c4b;
  --bubble-incoming: #202c33;
  --text-outgoing: #e9edef;
  --text-incoming: #e9edef;
  --check-blue: #53bdeb;

  /* Typography & Status */
  --text-primary: #e9edef;
  --text-secondary: #8696a0;
  --text-muted: #667781;
  --text-link: #53bdeb;
  --danger: #ea4335;
  --danger-bg: rgba(234, 67, 53, 0.15);
  --warning: #fbbc04;
  --warning-bg: rgba(251, 188, 4, 0.15);
  --success: #34a853;

  /* Layout & Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="light"] {
  --bg-app: #f0f2f5;
  --bg-sidebar: #ffffff;
  --bg-header: #f0f2f5;
  --bg-chat: #efeae2;
  --bg-input-bar: #f0f2f5;
  --bg-input: #ffffff;
  --bg-search: #f0f2f5;
  --bg-hover: #f5f6f6;
  --bg-active: #ebebeb;
  --bg-card: #ffffff;
  --bg-modal: #ffffff;
  --border-color: #e9edef;
  --border-subtle: #d1d7db;
  --bubble-outgoing: #d9fdd3;
  --bubble-incoming: #ffffff;
  --text-outgoing: #111b21;
  --text-incoming: #111b21;
  --text-primary: #111b21;
  --text-secondary: #667781;
  --text-muted: #8696a0;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.16);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.28);
}

/* Buttons and Links */
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  outline: none;
  transition: all 0.2s ease;
}

input, textarea, select {
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid transparent;
  outline: none;
  transition: border-color 0.2s;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--wa-green);
}

/* =========================================================
   Top App Banner (Green Bar when needed / Desktop feel)
   ========================================================= */
.app-top-bar {
  height: 38px;
  background-color: #00a884;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  font-size: 13px;
  color: #fff;
  font-weight: 500;
  z-index: 10;
}

.app-top-bar .brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-top-bar .system-status {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-status.working {
  background: rgba(37, 211, 102, 0.2);
  color: #25d366;
  border: 1px solid rgba(37, 211, 102, 0.4);
}

.badge-status.scan_qr_code {
  background: rgba(251, 188, 4, 0.2);
  color: #fbbc04;
  border: 1px solid rgba(251, 188, 4, 0.4);
}

.badge-status.stopped, .badge-status.error, .badge-status.offline {
  background: rgba(234, 67, 53, 0.2);
  color: #ea4335;
  border: 1px solid rgba(234, 67, 53, 0.4);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 8px currentColor;
}

/* =========================================================
   Main App Container
   ========================================================= */
.app-container {
  display: flex;
  flex: 1;
  height: calc(100vh - 38px);
  width: 100vw;
  overflow: hidden;
  position: relative;
}

/* =========================================================
   Left Sidebar (Chats, Contacts, Filters)
   ========================================================= */
.sidebar {
  width: 420px;
  min-width: 340px;
  max-width: 500px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  z-index: 2;
}

.sidebar-header {
  height: 60px;
  background-color: var(--bg-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-color);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00a884, #005c4b);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 15px;
  flex-shrink: 0;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info .user-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.user-info .user-role {
  font-size: 11px;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  position: relative;
}

.icon-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.icon-btn .badge-pill {
  position: absolute;
  top: 2px;
  right: 2px;
  background-color: var(--wa-green);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  border-radius: 10px;
  padding: 1px 5px;
}

/* Search Bar */
.search-container {
  padding: 8px 12px;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-box {
  flex: 1;
  background-color: var(--bg-search);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  padding: 0 12px;
  height: 36px;
  gap: 10px;
  color: var(--text-secondary);
}

.search-box input {
  background: transparent;
  border: none;
  font-size: 14px;
  color: var(--text-primary);
  width: 100%;
}

.search-box input::placeholder {
  color: var(--text-secondary);
}

/* Quick Filter Tabs */
.filter-tabs {
  display: flex;
  gap: 8px;
  padding: 8px 12px;
  overflow-x: auto;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-sidebar);
}

.tab-chip {
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 13px;
  background-color: var(--bg-search);
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tab-chip:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.tab-chip.active {
  background-color: var(--wa-green-dim);
  color: var(--wa-green);
  font-weight: 600;
}

/* Chat List */
.chat-list {
  flex: 1;
  overflow-y: auto;
  list-style: none;
}

.chat-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.15s ease;
  position: relative;
}

.chat-item:hover {
  background-color: var(--bg-hover);
}

.chat-item.active {
  background-color: var(--bg-active);
}

.chat-item .avatar {
  margin-right: 14px;
  width: 48px;
  height: 48px;
  font-size: 17px;
}

.chat-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chat-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}

.chat-time {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.chat-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chat-last-msg {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.chat-tag-pill {
  font-size: 10px;
  background-color: rgba(0, 168, 132, 0.2);
  color: var(--wa-green);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  margin-left: 6px;
}

.unread-badge {
  background-color: var(--wa-green);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  min-width: 19px;
  height: 19px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
  margin-left: 8px;
}

/* =========================================================
   Right Chat Area
   ========================================================= */
.chat-window {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-chat);
  position: relative;
  height: 100%;
}

/* Background Pattern (WhatsApp Doodle Overlay) */
.chat-window::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: 0 0, 20px 20px;
  opacity: 0.6;
  pointer-events: none;
  z-index: 1;
}

/* Empty State / Welcome Screen */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
  background-color: var(--bg-header);
  z-index: 2;
  border-bottom: 6px solid var(--wa-green);
}

.empty-state .welcome-icon {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 168, 132, 0.2), rgba(0, 92, 75, 0.3));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--wa-green);
  margin-bottom: 24px;
  border: 1px solid rgba(0, 168, 132, 0.3);
}

.empty-state h1 {
  font-size: 32px;
  font-weight: 300;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.empty-state p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.empty-state .lock-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 30px;
}

/* Chat Active Header */
.chat-header {
  height: 60px;
  background-color: var(--bg-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-color);
  z-index: 2;
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
}

.chat-header-text .contact-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.chat-header-text .contact-status {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.chat-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Messages Area */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 2;
}

/* Date Divider */
.date-divider {
  display: flex;
  justify-content: center;
  margin: 10px 0;
}

.date-divider span {
  background-color: rgba(30, 42, 48, 0.85);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Message Bubble */
.message-row {
  display: flex;
  width: 100%;
}

.message-row.outgoing {
  justify-content: flex-end;
}

.message-row.incoming {
  justify-content: flex-start;
}

.message-bubble {
  max-width: 65%;
  min-width: 90px;
  padding: 6px 9px 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 14.2px;
  line-height: 1.4;
  position: relative;
  box-shadow: var(--shadow-sm);
  word-break: break-word;
}

.message-bubble.outgoing {
  background-color: var(--bubble-outgoing);
  color: var(--text-outgoing);
  border-top-right-radius: 0;
}

.message-bubble.incoming {
  background-color: var(--bubble-incoming);
  color: var(--text-incoming);
  border-top-left-radius: 0;
}

.message-text {
  white-space: pre-wrap;
  margin-bottom: 2px;
}

.message-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
  float: right;
  margin-left: 12px;
}

.check-icon {
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
}

.check-icon.read {
  color: var(--check-blue);
}

/* Chat Input Bar */
.chat-input-bar {
  min-height: 62px;
  background-color: var(--bg-input-bar);
  padding: 8px 16px;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  border-top: 1px solid var(--border-color);
  z-index: 2;
}

.input-wrapper {
  flex: 1;
  background-color: var(--bg-input);
  border-radius: var(--radius-md);
  padding: 9px 14px;
  display: flex;
  align-items: center;
  min-height: 42px;
  max-height: 120px;
}

.input-wrapper textarea {
  width: 100%;
  background: transparent;
  border: none;
  resize: none;
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.4;
  outline: none;
  max-height: 100px;
}

.input-wrapper textarea::placeholder {
  color: var(--text-secondary);
}

.btn-send {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--wa-green);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, background-color 0.15s ease;
  flex-shrink: 0;
}

.btn-send:hover {
  background-color: var(--wa-green-hover);
  transform: scale(1.05);
}

.btn-send:active {
  transform: scale(0.95);
}

/* Emoji Drawer */
.emoji-drawer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 12px 16px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  z-index: 2;
  box-shadow: var(--shadow-md);
}

.emoji-btn {
  font-size: 22px;
  padding: 4px;
  border-radius: 6px;
}

.emoji-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: scale(1.2);
}

/* =========================================================
   Modal Dialogs & Overlays
   ========================================================= */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background-color: var(--bg-modal);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: modalSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideUp {
  from {
    transform: translateY(20px) scale(0.97);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.modal-header {
  padding: 18px 24px;
  background-color: var(--bg-header);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-body {
  padding: 24px;
  max-height: 80vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-footer {
  padding: 16px 24px;
  background-color: var(--bg-header);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Form Groups */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input, .form-group select, .form-group textarea {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  font-size: 14px;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--wa-green);
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

/* Buttons */
.btn-primary {
  background-color: var(--wa-green);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

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

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 14px;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

.btn-danger {
  background-color: var(--danger);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 14px;
}

/* QR Code Screen styling */
.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.qr-box {
  width: 250px;
  height: 250px;
  background-color: #fff;
  border-radius: var(--radius-md);
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.qr-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--bg-chat);
  font-size: 13px;
  font-weight: 500;
}

.instructions-list {
  text-align: left;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  padding-left: 20px;
}

.instructions-list li {
  margin-bottom: 6px;
}

/* Login Card Overlay */
.auth-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-app);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  overflow-y: auto;
}

.auth-header-bar {
  height: 220px;
  background-color: #00a884;
  display: flex;
  align-items: flex-start;
  padding: 28px 48px;
  color: #fff;
}

.auth-header-bar .brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.auth-content {
  margin-top: -120px;
  display: flex;
  justify-content: center;
  padding: 0 20px 40px;
}

.auth-card {
  width: 100%;
  max-width: 460px;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.auth-card-header {
  text-align: center;
  margin-bottom: 8px;
}

.auth-card-header h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.auth-card-header p {
  font-size: 14px;
  color: var(--text-secondary);
}

.auth-nav-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 10px;
}

.auth-tab-btn {
  flex: 1;
  padding: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  text-align: center;
}

.auth-tab-btn.active {
  color: var(--wa-green);
  border-bottom-color: var(--wa-green);
}

/* Spinner / Loader */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

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

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  background-color: var(--bg-header);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--wa-green);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  min-width: 280px;
  max-width: 400px;
}

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

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

@keyframes toastIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* =========================================================
   Multi-Connection WhatsApp Bar & Switcher System
   ========================================================= */
.connection-bar {
  background-color: var(--bg-header);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  white-space: nowrap;
}

.connection-bar::-webkit-scrollbar {
  height: 3px;
}

.connection-bar-label {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 700;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.connection-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--bg-search);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.connection-chip:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.connection-chip.active {
  background: rgba(0, 168, 132, 0.2);
  color: #fff;
  border-color: var(--wa-green);
  box-shadow: 0 0 10px rgba(0, 168, 132, 0.3);
  font-weight: 600;
}

.connection-chip .chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.connection-chip .chip-dot.working {
  background-color: #25d366;
  box-shadow: 0 0 6px #25d366;
}

.connection-chip .chip-dot.scan_qr_code,
.connection-chip .chip-dot.starting {
  background-color: #fbbc04;
  box-shadow: 0 0 6px #fbbc04;
}

.connection-chip .chip-dot.stopped,
.connection-chip .chip-dot.error,
.connection-chip .chip-dot.offline {
  background-color: #ea4335;
  box-shadow: 0 0 6px #ea4335;
}

/* Active Line Badge in Chat Header */
.active-line-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 168, 132, 0.18);
  border: 1px solid rgba(0, 168, 132, 0.4);
  color: var(--wa-green);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  margin-left: 8px;
}

/* Connection Cards in Modal */
.connections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin-top: 10px;
}

.connection-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all 0.2s ease;
  position: relative;
}

.connection-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.connection-card.active-line {
  border-color: var(--wa-green);
  background: linear-gradient(180deg, rgba(0, 168, 132, 0.08) 0%, var(--bg-card) 100%);
}

.connection-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.connection-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.connection-card-phone {
  font-size: 12px;
  color: var(--text-secondary);
}

.connection-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--border-color);
}

/* =========================================================
   WhatsApp Web Left Navigation Rail (Vertical Icon Bar)
   ========================================================= */
:root {
  --rail-width: 64px;
  --bg-rail: #202c33;
  --rail-icon-color: #aebac1;
  --rail-icon-active: #ffffff;
  --rail-btn-active-bg: rgba(255, 255, 255, 0.1);
  --rail-badge-bg: #25d366;
  --rail-badge-text: #111b21;
}

[data-theme="light"] {
  --bg-rail: #f0f2f5;
  --rail-icon-color: #54656f;
  --rail-icon-active: #111b21;
  --rail-btn-active-bg: rgba(0, 0, 0, 0.08);
}

.wa-nav-rail {
  width: var(--rail-width);
  min-width: var(--rail-width);
  height: 100%;
  background-color: var(--bg-rail);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  z-index: 10;
  user-select: none;
  flex-shrink: 0;
}

.rail-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.rail-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--rail-icon-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}

.rail-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--rail-icon-active);
  transform: scale(1.04);
}

.rail-btn.active {
  background: var(--rail-btn-active-bg);
  color: var(--rail-icon-active);
}

.rail-badge-counter {
  position: absolute;
  top: -2px;
  right: -2px;
  background-color: var(--wa-green);
  color: #111b21;
  font-size: 11px;
  font-weight: 700;
  height: 18px;
  min-width: 18px;
  padding: 0 5px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-rail);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  line-height: 1;
}

.rail-dot-indicator {
  position: absolute;
  top: 4px;
  right: 5px;
  width: 9px;
  height: 9px;
  background-color: var(--wa-green);
  border-radius: 50%;
  border: 2px solid var(--bg-rail);
}

.rail-divider {
  width: 32px;
  height: 1px;
  background-color: rgba(255, 255, 255, 0.12);
  margin: 4px 0;
}

[data-theme="light"] .rail-divider {
  background-color: rgba(0, 0, 0, 0.12);
}

.rail-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  background: linear-gradient(135deg, #00a884, #005c4b);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.rail-avatar:hover {
  border-color: var(--wa-green);
  transform: scale(1.08);
}

/* =========================================================
   Configurações Multi-Tab Hub (Settings Modal)
   ========================================================= */
.settings-nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  border-bottom: 1px solid var(--border-color);
  padding: 0 16px;
  background: var(--bg-header);
  overflow-x: auto;
}

.settings-tab-btn {
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
}

.settings-tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.settings-tab-btn.active {
  color: var(--wa-green);
  border-bottom-color: var(--wa-green);
}

.settings-tab-pane {
  display: none;
  padding: 18px 20px;
  animation: fadeIn 0.2s ease;
}

.settings-tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.session-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
  max-height: 180px;
  overflow-y: auto;
  padding: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.session-check-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 4px;
  cursor: pointer;
  background: var(--bg-header);
  font-size: 12px;
  transition: background 0.15s ease;
}

.session-check-item:hover {
  background: rgba(0, 168, 132, 0.12);
}

.session-check-item input[type="checkbox"] {
  accent-color: var(--wa-green);
  cursor: pointer;
}