:root {
  --wa-green: #00a884;
  --wa-dark: #111b21;
  --wa-panel: #202c33;
  --wa-border: #2a3942;
  --wa-text: #e9edef;
  --wa-muted: #8696a0;
  --wa-bubble-out: #005c4b;
  --wa-bubble-in: #202c33;
  --sidebar-w: 320px;
  --chatlist-w: 360px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--wa-dark);
  color: var(--wa-text);
  height: 100dvh;
  overflow: hidden;
}

#app {
  display: flex;
  height: 100dvh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  background: var(--wa-panel);
  border-right: 1px solid var(--wa-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--wa-dark);
}

.sidebar-header h1 {
  font-size: 18px;
  color: var(--wa-green);
}

.header-actions { display: flex; gap: 8px; }

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--wa-border);
  color: var(--wa-text);
  font-size: 18px;
  cursor: pointer;
}
.icon-btn:hover { background: #3b4a54; }

.account-list { flex: 1; overflow-y: auto; }

.account-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--wa-border);
  transition: background 0.15s;
}
.account-item:hover, .account-item.active { background: #2a3942; }

.account-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--wa-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}

.account-avatar.has-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.account-avatar.has-img .avatar-fallback {
  display: none;
}

.account-info { flex: 1; min-width: 0; }
.account-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.account-phone { font-size: 13px; color: var(--wa-muted); }
.account-status { font-size: 12px; margin-top: 2px; }
.account-status.connected { color: var(--wa-green); }
.account-status.qr, .account-status.connecting { color: #f7c948; }
.account-status.disconnected { color: #ea4335; }

.account-actions button {
  background: none;
  border: none;
  color: var(--wa-muted);
  cursor: pointer;
  padding: 4px 8px;
  font-size: 12px;
}
.account-actions button:hover { color: #ea4335; }

/* Chat list panel */
.chat-list-panel {
  width: var(--chatlist-w);
  background: var(--wa-dark);
  border-right: 1px solid var(--wa-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--wa-panel);
  min-height: 56px;
}

.panel-title { flex: 1; font-weight: 500; }

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--wa-muted);
}
.status-dot.connected { background: var(--wa-green); }
.status-dot.qr, .status-dot.connecting { background: #f7c948; }

.back-btn {
  background: none;
  border: none;
  color: var(--wa-text);
  font-size: 20px;
  cursor: pointer;
  display: none;
}

.chat-list { flex: 1; overflow-y: auto; }

.chat-search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--wa-panel);
  border-bottom: 2px solid var(--wa-green);
  flex-shrink: 0;
  min-height: 52px;
}

.search-icon {
  font-size: 16px;
  line-height: 1;
  opacity: 0.85;
  flex-shrink: 0;
}

.chat-search-bar input {
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  border-radius: 20px;
  border: 1px solid #3b4a54;
  background: var(--wa-dark);
  color: var(--wa-text);
  font-size: 14px;
  outline: none;
}
.chat-search-bar input:focus {
  border-color: var(--wa-green);
  box-shadow: 0 0 0 1px rgba(0, 168, 132, 0.35);
}
.chat-search-bar input::placeholder { color: var(--wa-muted); }

.chat-filter-bar {
  display: flex;
  gap: 8px;
  padding: 8px 16px 4px;
  background: var(--wa-panel);
  border-bottom: 1px solid var(--wa-border);
}
.chat-filter {
  border: 1px solid var(--wa-border);
  background: transparent;
  color: var(--wa-muted);
  border-radius: 16px;
  padding: 4px 12px;
  font-size: 12px;
  cursor: pointer;
}
.chat-filter.active {
  background: #1f2c34;
  color: var(--wa-green);
  border-color: var(--wa-green);
}

.chat-name {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  min-width: 0;
}
.chat-name-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.chat-badge-group {
  flex-shrink: 0;
  font-size: 10px;
  line-height: 1;
  padding: 2px 5px;
  border-radius: 4px;
  background: #054640;
  color: #25d366;
  font-weight: 600;
}

.panel-title-wrap {
  flex: 1;
  min-width: 0;
}
.panel-title-wrap .panel-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.panel-subtitle {
  font-size: 12px;
  color: var(--wa-muted);
  margin-top: 2px;
}

.search-action {
  padding: 8px 14px;
  border-radius: 20px;
  border: none;
  background: var(--wa-green);
  color: #fff;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.search-action:hover { filter: brightness(1.05); }

.new-chat-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--wa-border);
  background: #182229;
}
.new-chat-banner:hover { background: #111b21; }
.new-chat-banner .chat-avatar { background: var(--wa-green); }
.new-chat-banner .chat-name { color: var(--wa-green); }

#new-chat-phone {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--wa-border);
  background: var(--wa-dark);
  color: var(--wa-text);
  margin-bottom: 12px;
  font-size: 15px;
}

.chat-item {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--wa-border);
}
.chat-item:hover { background: #111b21; }

.chat-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #6b7c85;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
}

.chat-avatar.has-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.chat-avatar.has-img .avatar-fallback {
  display: none;
}

.chat-info { flex: 1; min-width: 0; }
.chat-preview {
  font-size: 13px;
  color: var(--wa-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 4px;
}
.chat-time { font-size: 11px; color: var(--wa-muted); flex-shrink: 0; }

.chat-avatar-wrap, .account-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}

.unread-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 10px;
  background: #ea4335;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  box-shadow: 0 0 0 2px var(--wa-panel);
}
.unread-badge.account-badge { top: -2px; right: -2px; }
.chat-item.unread-hot .chat-name { color: #fff; }
.chat-item.unread-hot .chat-preview { color: var(--wa-text); font-weight: 500; }

/* Chat panel */
.chat-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #0b141a;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23182229' fill-opacity='0.4'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.msg {
  max-width: 65%;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.4;
  word-break: break-word;
}
.msg.in { align-self: flex-start; background: var(--wa-bubble-in); border-top-left-radius: 0; }
.msg.out { align-self: flex-end; background: var(--wa-bubble-out); border-top-right-radius: 0; }
.msg-sender {
  font-size: 12px;
  font-weight: 600;
  color: #53bdeb;
  margin-bottom: 2px;
}
.msg-time { font-size: 10px; color: var(--wa-muted); margin-top: 4px; text-align: right; }

.composer {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  background: var(--wa-panel);
}

.composer input {
  flex: 1;
  padding: 10px 16px;
  border-radius: 24px;
  border: none;
  background: var(--wa-border);
  color: var(--wa-text);
  font-size: 15px;
  outline: none;
}

.composer button, .btn-primary {
  padding: 10px 20px;
  border-radius: 24px;
  border: none;
  background: var(--wa-green);
  color: #fff;
  font-weight: 500;
  cursor: pointer;
}
.composer button:disabled { opacity: 0.5; cursor: not-allowed; }

.attach-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--wa-border);
  cursor: pointer;
  font-size: 18px;
  flex-shrink: 0;
}

.msg-img {
  max-width: 240px;
  max-height: 240px;
  border-radius: 6px;
  display: block;
  margin-bottom: 4px;
}

.account-actions { display: flex; gap: 2px; }

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal.hidden { display: none; }

.modal-content {
  background: var(--wa-panel);
  border-radius: 12px;
  padding: 24px;
  width: 90%;
  max-width: 400px;
}
.modal-content h2 { margin-bottom: 16px; font-size: 18px; }

.tabs { display: flex; gap: 4px; margin-bottom: 16px; }
.tab {
  flex: 1;
  padding: 8px;
  border: none;
  background: var(--wa-border);
  color: var(--wa-muted);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}
.tab.active { background: var(--wa-green); color: #fff; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.hint { font-size: 13px; color: var(--wa-muted); margin-bottom: 12px; line-height: 1.5; }
.hint.warn { color: #f7c948; }

.qr-box {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
  background: #fff;
  border-radius: 8px;
  margin-bottom: 12px;
}
.qr-box img { max-width: 100%; }
.qr-placeholder { color: #666; }

#pairing-phone, #qr-proxy, #import-proxy, #import-engine {
  width: 100%;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--wa-border);
  background: var(--wa-dark);
  color: var(--wa-text);
  margin-bottom: 12px;
  font-size: 15px;
}

.pairing-code {
  text-align: center;
  font-size: 32px;
  letter-spacing: 8px;
  font-weight: 700;
  color: var(--wa-green);
  margin-top: 16px;
}

#import-file { margin-bottom: 12px; color: var(--wa-muted); width: 100%; }

.btn-close {
  width: 100%;
  margin-top: 16px;
  padding: 10px;
  border: 1px solid var(--wa-border);
  border-radius: 8px;
  background: transparent;
  color: var(--wa-muted);
  cursor: pointer;
}

.empty-state {
  padding: 40px 20px;
  text-align: center;
  color: var(--wa-muted);
  font-size: 14px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #323739;
  color: var(--wa-text);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 200;
  transition: opacity 0.3s;
}
.toast.hidden { opacity: 0; pointer-events: none; }

.hidden { display: none !important; }

/* Mobile */
@media (max-width: 768px) {
  .sidebar { width: 100%; position: absolute; z-index: 10; height: 100%; }
  .sidebar.hidden-mobile { display: none; }
  .chat-list-panel { width: 100%; }
  .chat-list-panel.hidden-mobile { display: none; }
  .chat-panel { width: 100%; position: absolute; inset: 0; z-index: 20; }
  .back-btn, .mobile-only { display: block; }
}