:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: #141d2f;
  --bg-card-hover: #1c273e;
  --border-color: #27354f;
  --border-subtle: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #3b82f6;
  --accent-hover: #2563eb;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-purple: #8b5cf6;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  gap: 1.5rem;
  z-index: 10;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-purple));
  color: white;
  border-radius: 8px;
}

.brand-title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-search {
  position: relative;
  flex: 1;
  max-width: 480px;
}

.nav-search input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.25rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: border-color 0.2s;
}

.nav-search input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
}

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

.status-badge.connected .status-dot {
  background-color: var(--accent-success);
  box-shadow: 0 0 8px var(--accent-success);
}

.status-badge.connecting .status-dot {
  background-color: var(--accent-warning);
}

.status-badge.disconnected .status-dot {
  background-color: var(--accent-danger);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.15s ease-in-out;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #fff;
}

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

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

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

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

.btn-outline:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

.btn-icon {
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 6px;
}

.btn-icon:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-text {
  background: none;
  border: none;
  color: var(--accent-primary);
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0;
}

.btn-text:hover {
  text-decoration: underline;
}

/* Main Layout */
.main-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1rem;
  gap: 1.5rem;
  overflow-y: auto;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

.section-header h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  font-weight: 600;
}

.counter-badge {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 0.1rem 0.4rem;
  border-radius: 9999px;
}

.numbers-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.number-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.75rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--text-secondary);
  text-align: left;
  cursor: pointer;
  transition: all 0.15s;
}

.number-item:hover {
  background-color: var(--bg-card);
  color: var(--text-primary);
}

.number-item.active {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
  box-shadow: inset 3px 0 0 var(--accent-primary);
}

.number-info {
  display: flex;
  flex-direction: column;
}

.number-label {
  font-size: 0.875rem;
  font-weight: 500;
}

.number-val {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.msg-badge {
  font-size: 0.75rem;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 500;
}

.quick-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.stat-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: 6px;
  text-align: center;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-val {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

.mcp-helper .helper-box {
  background: linear-gradient(145deg, #131b2e, #1a233a);
  border: 1px solid var(--border-color);
  padding: 0.85rem;
  border-radius: 8px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.helper-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: #60a5fa;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

/* Feed Section */
.feed-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--bg-primary);
}

/* OTP Highlights */
.otp-container {
  background: linear-gradient(180deg, #14213d, var(--bg-primary));
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
}

.otp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.otp-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.otp-title h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #38bdf8;
}

.otp-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.pulse-indicator {
  width: 10px;
  height: 10px;
  background-color: #38bdf8;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(56, 189, 248, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

.otp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
}

.otp-card {
  background-color: var(--bg-card);
  border: 1px solid #2563eb;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

.otp-sender {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.otp-recipient {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.otp-code-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-primary);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  border: 1px dashed var(--border-color);
}

.otp-code-val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: #38bdf8;
}

.btn-copy-otp {
  background-color: var(--accent-primary);
  color: white;
  border: none;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-copy-otp:hover {
  background-color: var(--accent-hover);
}

/* Feed Header */
.feed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.feed-title-wrap h2 {
  font-size: 1.25rem;
  font-weight: 700;
}

.feed-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.feed-tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Messages List */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.message-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 0.15s, background-color 0.15s;
}

.message-card:hover {
  border-color: #3b5072;
  background-color: var(--bg-card-hover);
}

.message-card.has-otp {
  border-left: 3px solid #38bdf8;
}

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

.message-sender-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.sender-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.sender-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.recipient-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background-color: var(--bg-tertiary);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  color: var(--text-secondary);
}

.message-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sim-tag {
  background-color: #1e293b;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 500;
}

.message-body {
  font-size: 0.9375rem;
  color: #e2e8f0;
  word-break: break-word;
  white-space: pre-wrap;
}

.otp-extracted-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(56, 189, 248, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: #38bdf8;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.message-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-delete-msg {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem;
  border-radius: 4px;
}

.btn-delete-msg:hover {
  color: var(--accent-danger);
}

/* Modals */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-backdrop.open {
  display: flex;
}

.modal-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.modal-card.modal-lg {
  max-width: 780px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Forms */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select,
.form-row input,
.form-row select {
  padding: 0.55rem 0.75rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.form-row {
  display: flex;
  gap: 0.75rem;
}

.flex-1 {
  flex: 1;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  cursor: pointer;
}

.number-checkbox-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
  padding: 0.75rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  max-height: 160px;
  overflow-y: auto;
}

/* Tables */
.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.data-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  background-color: var(--bg-primary);
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.data-table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
}

/* QR Code & Pairing Box */
.pairing-box {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--accent-primary);
  border-radius: 8px;
  padding: 1.25rem;
}

.qr-code {
  width: 140px;
  height: 140px;
  background-color: white;
  padding: 8px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.code-field {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.4rem;
  background-color: var(--bg-primary);
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
}

.code-field code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #38bdf8;
  word-break: break-all;
}

.btn-copy {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.7rem;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  cursor: pointer;
  margin-left: auto;
}

/* Snippet box */
.snippet-pre {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #93c5fd;
  overflow-x: auto;
  white-space: pre;
}

.snippet-tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tab-btn.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

/* Alert boxes */
.alert-box {
  padding: 0.9rem;
  border-radius: 6px;
  font-size: 0.8125rem;
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.alert-title {
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.secret-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-primary);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
}

.secret-field code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #10b981;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1000;
}

.toast {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideIn 0.2s ease-out;
}

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

.card-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 8px;
}

.text-muted { color: var(--text-muted); font-size: 0.8125rem; }
.text-sm { font-size: 0.75rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.font-bold { font-weight: 600; }

.modal-card.ding-modal { max-width: 1050px; }
#dingFields { border: 0; padding: 0; min-width: 0; }
.ding-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.ding-toggle { display: flex; gap: 0.6rem; align-items: center; min-height: 44px; cursor: pointer; }
.ding-toggle input { width: 18px; height: 18px; flex-shrink: 0; }
.ding-modal .ding-toggle { display: flex; }
.ding-modal .ding-toggle input[type="checkbox"] { width: 18px; min-width: 18px; height: 18px; min-height: 18px; flex: 0 0 18px; margin: 0; }
.ding-modal .form-group input:not([type="checkbox"]), .ding-modal select { min-height: 44px; }
.ding-modal .modal-header .ding-actions { flex-wrap: nowrap; align-items: center; gap: 0.25rem; }
.ding-modal .modal-header .ding-actions .btn { width: auto; white-space: nowrap; }
.ding-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.ding-modal .btn, .ding-modal .modal-close { min-height: 44px; justify-content: center; }
.ding-modal .modal-close { min-width: 44px; }
.ding-modal .btn:disabled, #dingFields:disabled { opacity: 0.6; }
.ding-modal .btn:disabled { cursor: not-allowed; }
.ding-modal :focus-visible { outline: 2px solid #93c5fd; outline-offset: 3px; }
.ding-preview summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; color: #93c5fd; }
.ding-preview pre { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 0.8125rem; }
.ding-preview a { color: #93c5fd; display: inline-flex; align-items: center; min-height: 44px; }
.ding-error { color: #fca5a5; }
.ding-status { font-weight: 600; white-space: nowrap; }
.ding-status-sent { color: #6ee7b7; }
.ding-status-failed, .ding-status-unknown { color: #fca5a5; }
.ding-table td { overflow-wrap: anywhere; vertical-align: top; }
@media (max-width: 700px) {
  .ding-columns { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .ding-actions .btn { width: 100%; }
  .ding-table thead { display: none; }
  .ding-table, .ding-table tbody, .ding-table tr, .ding-table td { display: block; width: 100%; }
  .ding-table tr { border: 1px solid var(--border-color); border-radius: 8px; margin-bottom: 0.75rem; padding: 0.5rem; }
  .ding-table td { border: 0; padding: 0.4rem; }
  .ding-table td:nth-child(2)::before { content: '接收手机号：'; color: var(--text-secondary); }
}

.pairing-qr { flex: 0 0 240px; align-self: flex-start; max-width: 100%; background: white; border-radius: 8px; }
.pairing-qr svg { display: block; width: 240px; max-width: 100%; height: auto; }

/* Account login uses the existing modal and form design. */
.auth-checking .navbar, .auth-checking .main-content,
.login-required .navbar, .login-required .main-content { visibility: hidden; }
.auth-boot { position: fixed; inset: 0; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 1rem; z-index: 110; background: var(--bg-primary); color: var(--text-secondary); }
.auth-boot[hidden], #authModal [hidden] { display: none !important; }
.login-required #authModal { display: flex; }
.login-required .modal-backdrop:not(#authModal), .login-required .toast-container { display: none; }
#webLoginForm input, #webLoginForm button { min-height: 44px; }
#webLoginForm .modal-footer button { width: 100%; justify-content: center; }
#webLoginForm .login-error { color: #fca5a5; font-size: 0.875rem; min-height: 1.5em; }
#webLoginForm :focus-visible { outline: 2px solid #93c5fd; outline-offset: 3px; }

/* Phone-number inventory, sharing the existing dark dashboard styling. */
.number-overview { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.library-heading, .library-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.library-heading h2 { font-size: 1rem; }
.library-note { display: block; color: var(--text-secondary); font-size: 0.8125rem; line-height: 1.65; overflow-wrap: anywhere; }
.library-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; margin-top: 1rem; }
.library-stats > div { padding: 0.75rem 1rem; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 8px; }
.library-stats span { display: block; color: var(--text-secondary); font-size: 0.8125rem; }
.library-stats strong { display: block; font-size: 1.75rem; font-variant-numeric: tabular-nums; }
.modal-card.library-modal { max-width: 1050px; }
.library-form { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto; align-items: end; gap: 0.75rem; }
.library-form .form-group, .library-toolbar .form-group { margin-bottom: 0; }
.library-form > p { grid-column: 1 / -1; }
.library-toolbar .form-group { flex: 1; max-width: 450px; }
.library-modal .btn { min-height: 44px; justify-content: center; white-space: nowrap; }
.library-modal .modal-close { min-width: 44px; min-height: 44px; }
.library-modal input { min-height: 44px; }
.library-table th { white-space: nowrap; }
.library-table td { vertical-align: top; overflow-wrap: anywhere; }
.library-balance-amount { display: block; font-size: 1rem; font-variant-numeric: tabular-nums; color: var(--text-primary); }
.library-registration summary { cursor: pointer; color: #93c5fd; min-height: 44px; line-height: 44px; list-style-position: inside; }
.library-table [data-library-balance] { min-width: 155px; }
.library-row-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.library-modal .btn:disabled { opacity: 0.55; cursor: wait; }
.library-modal :focus-visible, .number-overview :focus-visible { outline: 2px solid #93c5fd; outline-offset: 3px; }
.balance-number { font-family: var(--font-mono); font-size: 1rem; overflow-wrap: anywhere; }
.balance-amount { display: block; font-size: 2rem; margin: 0.5rem 0; font-variant-numeric: tabular-nums; }
.balance-steps { margin: 0.75rem 0 1rem; padding-left: 1.25rem; color: var(--text-secondary); font-size: 0.875rem; }
.balance-steps li + li { margin-top: 0.5rem; }
.carrier-guides { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.carrier-guides h4 { font-size: 0.875rem; }
.carrier-guides p { font-size: 0.8125rem; color: var(--text-secondary); margin: 0.5rem 0; }
.carrier-guides a { color: #93c5fd; font-size: 0.8125rem; display: inline-flex; align-items: center; min-height: 44px; }

@media (max-width: 900px) {
  .library-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .library-form { grid-template-columns: minmax(0, 1fr); }
  .carrier-guides { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 700px) {
  .number-overview { padding: 1rem 0.75rem; }
  .library-heading, .library-toolbar { flex-wrap: wrap; }
  .library-stats > div { padding: 0.75rem; }
  .library-table thead { display: none; }
  .library-table, .library-table tbody, .library-table tr, .library-table td { display: block; width: 100%; }
  .library-table tr { border: 1px solid var(--border-color); border-radius: 8px; margin-bottom: 0.75rem; padding: 0.5rem; }
  .library-table td { border: 0; padding: 0.4rem; }
  .library-table td:nth-child(2)::before { content: '话费余额：'; color: var(--text-secondary); }
  .library-table td:nth-child(4)::before { content: '短信总数 / 今日：'; color: var(--text-secondary); }
  .library-table td:nth-child(5)::before { content: '最近收信：'; color: var(--text-secondary); }
}

/* Keep Chinese labels readable in narrow app panels and on phones. */
.nav-brand, .status-dot, .btn svg { flex-shrink: 0; }
.nav-actions .btn, .status-badge { white-space: nowrap; }
.feed-section, .feed-title-wrap, .pairing-details { min-width: 0; }
.sidebar { flex-shrink: 0; }
.table-responsive { overflow-x: auto; }
.secret-field code { overflow-wrap: anywhere; }

@media (max-width: 1150px) {
  .navbar { flex-wrap: wrap; gap: 0.75rem; }
  .nav-actions { flex-wrap: wrap; justify-content: flex-end; }
  .nav-search { flex-basis: 100%; max-width: none; order: 3; }
}

@media (max-width: 700px) {
  body { height: auto; overflow: auto; }
  #app { height: auto; min-height: 100vh; }
  .navbar { padding: 0.75rem; }
  .nav-actions { width: 100%; justify-content: flex-start; gap: 0.5rem; }
  .nav-actions .btn { min-height: 44px; flex: 1 0 auto; justify-content: center; }
  .nav-search input { min-height: 44px; font-size: 16px; }
  .main-content { flex-direction: column; overflow: visible; }
  .sidebar { width: 100%; padding: 0.75rem; gap: 0.75rem; border-right: 0; border-bottom: 1px solid var(--border-color); }
  .numbers-nav { flex-direction: row; overflow-x: auto; }
  .number-item { min-width: 145px; flex-shrink: 0; }
  .feed-section { overflow: visible; flex: none; width: 100%; }
  .feed-header, .messages-container, .otp-container { padding: 1rem 0.75rem; }
  .feed-header, .otp-header, .message-top, .message-footer { flex-wrap: wrap; gap: 0.5rem; }
  .messages-container { overflow: visible; }
  .message-meta { flex-wrap: wrap; }
  .modal-backdrop { padding: 0.5rem; }
  .modal-card { max-height: 95vh; }
  .modal-body { padding: 1rem; }
  .form-row, .pairing-box { flex-direction: column; align-items: stretch; }
  .form-group input, .form-group textarea, .form-row input, .form-row select { font-size: 16px; min-width: 0; width: 100%; }
  .toast-container { left: 0.75rem; right: 0.75rem; bottom: 0.75rem; }
  .toast { overflow-wrap: anywhere; }
}