:root {
  --bg-deep: #0a0e17;
  --bg-card: #0f172a;
  --bg-input: #1e293b;
  --border: rgba(99, 179, 237, 0.15);
  --border-active: rgba(56, 189, 248, 0.5);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --cyan: #22d3ee;
  --cyan-dim: #0891b2;
  --purple: #a78bfa;
  --green: #34d399;
  --red: #f87171;
  --radius: 12px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --font: 'Noto Sans SC', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

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

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
  position: relative;
}

/* 背景动效 */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.bg-glow-1 {
  width: 500px; height: 500px;
  background: rgba(34, 211, 238, 0.08);
  top: -10%; left: -5%;
}

.bg-glow-2 {
  width: 400px; height: 400px;
  background: rgba(167, 139, 250, 0.08);
  bottom: -10%; right: -5%;
  animation-delay: -4s;
}

.screen {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
}

.hidden { display: none !important; }

/* ===== 登录页 ===== */
.auth-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 32px;
  box-shadow: var(--shadow);
}

.auth-card-wide {
  max-width: 440px;
}

.totp-setup {
  text-align: center;
  margin-bottom: 24px;
}

.totp-qr {
  border-radius: 12px;
  background: #fff;
  padding: 8px;
  margin-bottom: 16px;
}

.totp-manual {
  text-align: left;
}

.totp-secret {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  word-break: break-all;
  padding: 10px;
  background: var(--bg-input);
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--cyan);
}

.totp-input {
  font-family: var(--mono) !important;
  font-size: 24px !important;
  letter-spacing: 8px;
  text-align: center;
}

.totp-actions {
  margin-top: 8px;
}

.auth-forgot {
  margin-top: 16px;
  text-align: center;
}

.btn-link {
  background: none;
  border: none;
  color: var(--cyan);
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn-link:hover {
  color: var(--text);
}

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

.strength-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}

.strength-option:has(input:checked) {
  border-color: var(--border-active);
  background: rgba(34, 211, 238, 0.06);
}

.strength-desc {
  color: var(--text-muted);
  font-size: 12px;
}

.charset-options {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  font-size: 14px;
}

.charset-options label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.generated-secret-row {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.generated-secret-box {
  flex: 1;
  font-family: var(--mono) !important;
  font-size: 13px !important;
  line-height: 1.5 !important;
  word-break: break-all;
}

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

.logo-icon {
  font-size: 48px;
  color: var(--cyan);
}

.logo h1 {
  font-size: 28px;
  font-weight: 700;
  margin-top: 8px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

.auth-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-input);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.auth-tab.active {
  background: rgba(34, 211, 238, 0.15);
  color: var(--cyan);
  font-weight: 500;
}

/* ===== 表单 ===== */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--border-active);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
}

.error-msg {
  color: var(--red);
  font-size: 13px;
  min-height: 20px;
  margin-bottom: 8px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-dim), #6366f1);
  color: #fff;
  width: 100%;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(34, 211, 238, 0.3);
}

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

.btn-ghost:hover { color: var(--text); border-color: var(--border-active); }

.btn-danger {
  background: rgba(248, 113, 113, 0.15);
  color: var(--red);
  border: 1px solid rgba(248, 113, 113, 0.3);
}

.btn-danger:hover { background: rgba(248, 113, 113, 0.25); }

.btn-sm { padding: 8px 14px; font-size: 13px; width: auto; }

/* ===== 头部 ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
}

.header-logo {
  font-weight: 700;
  font-size: 16px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

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

.user-badge {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 10px;
  background: var(--bg-input);
  border-radius: 20px;
  border: 1px solid var(--border);
}

/* ===== 布局 ===== */
.app-layout {
  display: flex;
  height: calc(100dvh - 53px);
}

.sidebar {
  width: 200px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-align: left;
  text-decoration: none;
}

.nav-item:hover { background: rgba(34, 211, 238, 0.05); color: var(--text); }

.nav-item.active {
  background: rgba(34, 211, 238, 0.12);
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.2);
}

.nav-icon { font-size: 18px; }

.main-content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.page-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 20px;
  overflow: hidden;
  contain: layout style;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.panel-header h2 {
  font-size: 20px;
  font-weight: 600;
}

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

.form-hint {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* ===== 文档 ===== */
.docs-layout {
  display: flex;
  gap: 16px;
  flex: 1;
  overflow: hidden;
}

.doc-list {
  width: 240px;
  flex-shrink: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-y: auto;
  padding: 8px;
}

.doc-item {
  display: block;
  padding: 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  border: 1px solid transparent;
  margin-bottom: 4px;
  text-decoration: none;
  color: inherit;
}

.doc-item:hover { background: rgba(34, 211, 238, 0.05); }

.doc-item.active {
  background: rgba(34, 211, 238, 0.1);
  border-color: rgba(34, 211, 238, 0.2);
}

.doc-item-title {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 4px;
}

.doc-lock { flex-shrink: 0; font-size: 12px; }

.doc-encrypted-badge {
  font-size: 12px;
  color: var(--cyan);
  padding: 4px 8px;
  background: rgba(34, 211, 238, 0.1);
  border-radius: 6px;
  white-space: nowrap;
}

.doc-unlock {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  text-align: center;
}

.doc-unlock-icon { font-size: 48px; margin-bottom: 12px; }

.doc-unlock h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.doc-unlock-hint {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 8px;
}

.doc-unlock-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.doc-unlock-form {
  width: 100%;
  max-width: 360px;
  text-align: left;
}

.doc-item-time {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.doc-editor {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.editor-placeholder {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: 12px;
}

.placeholder-icon { font-size: 48px; opacity: 0.4; }

.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.editor-toolbar input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 600;
  outline: none;
}

.editor-toolbar input::placeholder { color: var(--text-muted); }

.editor-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.editor-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-pane + .editor-pane {
  border-left: 1px solid var(--border);
}

.pane-label {
  padding: 6px 14px;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.editor-pane textarea {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  padding: 14px;
  resize: none;
  outline: none;
}

.eth-spec-panel .eth-spec-content {
  flex: 1;
  overflow-y: auto;
  max-height: calc(100dvh - 200px);
  padding: 8px 4px 24px;
}

.eth-spec-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 13px;
}

.eth-spec-content th,
.eth-spec-content td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}

.eth-spec-content th {
  background: rgba(34, 211, 238, 0.08);
  color: var(--cyan);
}

.code-block-wrap {
  position: relative;
  margin: 12px 0;
}

.code-block-wrap pre {
  margin: 0;
  padding-top: 36px;
}

.code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 1;
  font-size: 12px;
  padding: 4px 10px;
  min-height: 0;
}

.preview-content {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  font-size: 14px;
  line-height: 1.7;
}

.preview-content h1, .preview-content h2, .preview-content h3 {
  margin: 16px 0 8px;
  color: var(--cyan);
}

.preview-content p { margin-bottom: 8px; }

.preview-content code {
  background: rgba(34, 211, 238, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 12px;
}

.preview-content pre {
  background: rgba(0, 0, 0, 0.3);
  padding: 12px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 8px 0;
}

.preview-content pre code { background: none; padding: 0; }

.preview-content ul, .preview-content ol { padding-left: 20px; margin-bottom: 8px; }

.preview-content blockquote {
  border-left: 3px solid var(--cyan);
  padding-left: 12px;
  color: var(--text-muted);
  margin: 8px 0;
}

/* ===== 密钥 ===== */
.secrets-layout {
  flex: 1;
  overflow-y: auto;
}

.secret-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.secret-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.secret-card:hover {
  border-color: var(--border-active);
}

.secret-remark {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.secret-remark .lock-icon { color: var(--cyan); }

.secret-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

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

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

/* ===== 表单页（密钥新增/解密） ===== */
.form-page {
  flex: 1;
  overflow-y: auto;
  max-width: 640px;
}

.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 8px;
}

.secret-meta-block {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.decrypt-time {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.decrypted-content {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
  margin-top: 12px;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  color: var(--text);
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 14px;
  z-index: 300;
  box-shadow: var(--shadow);
}

/* 密钥相关页面关闭背景动效，减轻 GPU 负担 */
.panel-hint {
  margin: -8px 0 16px;
  flex-shrink: 0;
}

.eth-address {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
  word-break: break-all;
  margin-bottom: 12px;
}

.eth-address-inline {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
}

.env-export-box {
  font-family: var(--mono) !important;
  font-size: 11px !important;
  line-height: 1.5 !important;
  word-break: break-all;
}

body[data-page="secrets"] .bg-glow,
body[data-page="eth"] .bg-glow {
  display: none;
}

.toast.success { border-color: rgba(52, 211, 153, 0.5); }
.toast.error { border-color: rgba(248, 113, 113, 0.5); }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .menu-toggle { display: block; }

  .sidebar {
    position: fixed;
    left: -220px;
    top: 53px;
    bottom: 0;
    z-index: 99;
    transition: left 0.3s ease;
    width: 220px;
  }

  .sidebar.open { left: 0; }

  .docs-layout { flex-direction: column; }

  .doc-list {
    width: 100%;
    max-height: 160px;
    flex-shrink: 0;
  }

  .editor-body { flex-direction: column; }

  .editor-pane + .editor-pane {
    border-left: none;
    border-top: 1px solid var(--border);
  }

  .editor-pane { min-height: 200px; }

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

  .page-panel { padding: 12px; }

  .auth-card { padding: 32px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}