:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1f2328;
  --text-secondary: #656d76;
  --border: #e4e7eb;
  --accent: #4f6ef7;
  --accent-soft: #eef1fe;
  --danger: #d93025;
  --danger-soft: rgba(217, 48, 37, 0.08);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 14px rgba(0, 0, 0, 0.04);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121417;
    --card: #1c1f24;
    --text: #e6e8eb;
    --text-secondary: #9aa3ad;
    --border: #2c3138;
    --accent: #7d95ff;
    --accent-soft: #232a44;
    --danger: #ff6b61;
    --danger-soft: rgba(255, 107, 97, 0.1);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 14px rgba(0, 0, 0, 0.2);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

/* ---------- 头部 ---------- */
.header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.header h1 {
  margin: 0;
  font-size: 28px;
  letter-spacing: 0.5px;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
}

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

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.btn-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.btn-icon.spinning svg {
  animation: spin 0.8s linear infinite;
}

.btn-icon.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

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

/* ---------- 通用按钮 ---------- */
.btn-small {
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.btn-small:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-primary {
  padding: 8px 16px;
  border: none;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-primary:hover { opacity: 0.88; }

.btn-danger {
  padding: 8px 16px;
  border: 1px solid var(--danger);
  border-radius: 9px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 14px;
  cursor: pointer;
  transition: filter 0.15s;
}

.btn-danger:hover { filter: brightness(1.08); }

/* ---------- 状态条 ---------- */
.status {
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 16px;
}

.status.error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.hidden { display: none !important; }

/* ---------- 管理面板 ---------- */
.admin-panel {
  background: var(--card);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.admin-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.admin-section {
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  margin-top: 12px;
}

.admin-section:first-of-type {
  border-top: none;
  margin-top: 0;
}

.admin-section h4 {
  margin: 0 0 6px;
  font-size: 14px;
}

.hint {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin: 4px 0 10px;
}

.admin-section code {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 5px;
  padding: 1px 5px;
  font-size: 12px;
}

.secrets-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.secret-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 13px;
}

.secret-name {
  font-weight: 600;
  white-space: nowrap;
  flex: none;
  max-width: 40%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.secret-value {
  flex: 1;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  user-select: all;
}

.secret-row .btn-mini {
  flex: none;
  padding: 3px 9px;
  font-size: 12px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.secret-row .btn-mini:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.secret-row .btn-mini.delete:hover {
  border-color: var(--danger);
  color: var(--danger);
}

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

.secret-form input {
  flex: 1;
  min-width: 140px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

.secret-form input:focus {
  border-color: var(--accent);
}

.danger-zone {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- 留言列表 ---------- */
.message-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.loading,
.empty {
  text-align: center;
  color: var(--text-secondary);
  padding: 48px 0;
}

.empty .empty-icon {
  font-size: 40px;
  display: block;
  margin-bottom: 8px;
}

.empty .empty-hint {
  font-size: 13px;
  margin-top: 6px;
  opacity: 0.8;
}

.message {
  position: relative;
  display: flex;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
  animation: slide-in 0.25s ease;
}

.message.is-new {
  border-color: var(--accent);
  background: linear-gradient(0deg, var(--accent-soft), var(--card));
}

@keyframes slide-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.avatar {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  user-select: none;
}

.message-body {
  flex: 1;
  min-width: 0;
}

.message-meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.message-author {
  font-weight: 600;
  font-size: 15px;
}

.message-time {
  font-size: 12px;
  color: var(--text-secondary);
}

.message-source {
  font-size: 11px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 1px 7px;
}

.message-text {
  margin-top: 2px;
  font-size: 15px;
  word-break: break-word;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  padding-right: 26px;
}

.message-text a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.message-text a:hover {
  border-bottom-color: var(--accent);
}

.btn-delete {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, background 0.15s, color 0.15s;
}

.message:hover .btn-delete,
.btn-delete:focus-visible {
  opacity: 1;
}

.btn-delete:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

@media (hover: none) {
  .btn-delete { opacity: 0.5; }
}

/* ---------- 使用说明 ---------- */
.usage {
  margin-top: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 14px;
  color: var(--text-secondary);
}

.usage summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  user-select: none;
}

.usage p {
  margin: 10px 0 0;
}

.usage code {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 13px;
}

.usage pre {
  margin: 10px 0 0;
  padding: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
}

.usage pre code {
  background: none;
  color: var(--text);
  padding: 0;
}

.btn-copy {
  margin-top: 12px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

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

/* ---------- 登录弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-box {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
  animation: slide-in 0.2s ease;
}

.modal-box h3 {
  margin: 0 0 14px;
  font-size: 17px;
}

.modal-box input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.modal-box input:focus {
  border-color: var(--accent);
}

.modal-error {
  color: var(--danger);
  font-size: 13px;
  margin: 8px 0 0;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 28px;
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
}