:root {
  --bg: #f3f6f4;
  --card: #ffffff;
  --text: #14231a;
  --muted: #5f6f66;
  --border: #dbe5df;
  --primary: #128c7e;
  --primary-dark: #0e6f64;
  --danger: #c0392b;
  --danger-dark: #962d22;
  --success: #1e7b34;
  --shadow: 0 12px 30px rgba(20, 35, 26, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(18, 140, 126, 0.12), transparent 28%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

.screen {
  min-height: 100vh;
}

.login-card {
  width: min(420px, calc(100% - 32px));
  margin: 10vh auto 0;
}

.topbar,
.layout {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0 12px;
  flex-wrap: wrap;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-link {
  text-decoration: none;
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid transparent;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-dark);
  background: #e9f7f3;
  border-color: #cfe8e1;
}

.page-layout {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-bottom: 32px;
}

.account-card {
  width: 100%;
}

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.toolbar input {
  flex: 1;
  min-width: 220px;
}

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

.filter-btn {
  border: 1px solid var(--border);
  background: #fafcfb;
  color: var(--text);
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
}

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

.table-wrap {
  overflow-x: auto;
}

.chat-table {
  width: 100%;
  border-collapse: collapse;
}

.chat-table th,
.chat-table td {
  text-align: left;
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.chat-table th {
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.chat-id {
  display: inline-block;
  background: #f4f8f6;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 0.82rem;
  word-break: break-all;
}

.type-pill {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.type-pill.group {
  background: #e8f5ef;
  color: var(--success);
}

.type-pill.personal {
  background: #eef3ff;
  color: #2f4f9f;
}

.action-cell {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-small {
  padding: 8px 12px;
  font-size: 0.85rem;
}

.empty-cell {
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-bottom: 32px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.card-header h2,
.brand h1 {
  margin: 0;
  font-size: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #25d366, #128c7e);
  color: white;
  font-weight: 700;
}

.badge {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  background: #edf2ef;
  color: var(--muted);
}

.badge.ready {
  background: #e7f7ec;
  color: var(--success);
}

.badge.qr,
.badge.initializing,
.badge.authenticated {
  background: #fff5df;
  color: #9a6700;
}

.badge.disconnected,
.badge.auth_failure,
.badge.error {
  background: #fdeceb;
  color: var(--danger);
}

.connection-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.label {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.hint,
.qr-note,
small {
  color: var(--muted);
  line-height: 1.5;
}

.qr-wrap {
  display: flex;
  justify-content: center;
  padding: 12px;
  border: 1px dashed var(--border);
  border-radius: 16px;
  background: #fafcfb;
}

.qr-wrap img {
  width: 280px;
  height: 280px;
  object-fit: contain;
}

.loader {
  width: 42px;
  height: 42px;
  border: 4px solid #d7e7e2;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 12px auto;
}

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

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

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label {
  font-weight: 600;
  font-size: 0.92rem;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 0.95rem;
  background: #fcfdfc;
}

input:focus {
  outline: 2px solid rgba(18, 140, 126, 0.18);
  border-color: var(--primary);
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s ease;
}

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

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

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

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.actions {
  display: flex;
  justify-content: flex-end;
}

.error-text {
  color: var(--danger);
  margin: 0;
}

.success-text {
  color: var(--success);
  margin: 0;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

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

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
}