/**
 * admin.css —— 后台管理样式
 *
 * 与首页共用设计语言（indigo/violet 浅色系）。
 * 包含：登录卡片、顶栏、默认密码警示条、页签导航、
 * 表单、管理列表、编辑器、Toast、确认弹窗。
 */

/* ========== 设计令牌 ========== */
:root {
  --font-stack: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'MiSans',
    'Microsoft YaHei', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;

  --color-primary: #6366f1;
  --color-primary-strong: #4f46e5;
  --color-violet: #7c3aed;
  --gradient-brand: linear-gradient(120deg, #6366f1 0%, #8b5cf6 55%, #a855f7 100%);
  --color-danger: #e11d48;
  --color-danger-strong: #be123c;
  --color-success: #059669;
  --color-warning-bg: #fffbeb;
  --color-warning-border: #fde68a;
  --color-warning-text: #92400e;

  --text-strong: #221f3a;
  --text-body: #4a4760;
  --text-muted: #8a87a3;

  --bg-page: #f5f6fb;
  --bg-card: #ffffff;
  --border-soft: #e7e7f4;
  --border-strong: #d8d8ee;

  --shadow-sm: 0 1px 2px rgba(34, 31, 58, 0.05);
  --shadow-md: 0 1px 2px rgba(34, 31, 58, 0.04), 0 8px 24px rgba(34, 31, 58, 0.07);
  --shadow-lg: 0 2px 6px rgba(34, 31, 58, 0.06), 0 18px 40px rgba(79, 70, 229, 0.16);

  --radius-card: 18px;
  --radius-pill: 999px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ========== hidden 属性兜底 ========== */
/* 防止 .login-wrap / .modal-backdrop 等 display: flex 规则
   覆盖浏览器 UA 默认样式 [hidden] { display: none } */
[hidden] {
  display: none !important;
}

/* ========== 基础 ========== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-stack);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-body);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: rgba(99, 102, 241, 0.22);
  color: var(--text-strong);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #cfcfe4;
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg-page);
}

::-webkit-scrollbar-thumb:hover {
  background: #b6b6d6;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ========== 背景装饰（与首页同风格） ========== */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
}

.blob-a {
  width: 520px;
  height: 520px;
  top: -160px;
  left: -120px;
  background: radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.32), rgba(99, 102, 241, 0) 70%);
}

.blob-b {
  width: 620px;
  height: 620px;
  top: -220px;
  right: -180px;
  background: radial-gradient(circle at 70% 30%, rgba(168, 85, 247, 0.26), rgba(168, 85, 247, 0) 70%);
}

.dot-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(99, 102, 241, 0.12) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(ellipse 80% 55% at 50% 0%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 55% at 50% 0%, #000 30%, transparent 78%);
}

/* ========== 登录视图 ========== */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: min(400px, 100%);
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  padding: 40px 36px 28px;
  text-align: center;
  animation: rise-in 0.5s var(--ease-out) backwards;
}

.brand-mark {
  width: 58px;
  height: 58px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.login-title {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 800;
  color: var(--text-strong);
}

.login-sub {
  margin: 0 0 26px;
  font-size: 13.5px;
  color: var(--text-muted);
}

.login-card form {
  text-align: left;
}

.back-home {
  display: inline-block;
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s var(--ease-out);
}

.back-home:hover {
  color: var(--color-primary-strong);
}

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

.field-hint {
  margin: -2px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.field-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-strong);
}

.field-group input,
.field-group textarea {
  width: 100%;
  padding: 9px 12px;
  font-family: var(--font-stack);
  font-size: 14px;
  color: var(--text-strong);
  background: #fbfbfe;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  transition:
    border-color 0.2s var(--ease-out),
    box-shadow 0.2s var(--ease-out),
    background 0.2s var(--ease-out);
}

.field-group textarea {
  resize: vertical;
  min-height: 84px;
  line-height: 1.6;
}

.field-group input:focus,
.field-group textarea:focus {
  outline: none;
  background: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.field-group input::placeholder,
.field-group textarea::placeholder {
  color: #b4b2c8;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0 18px;
  font-size: 14px;
  color: var(--text-body);
  cursor: pointer;
  user-select: none;
}

.checkbox-row input {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-error {
  margin: 0 0 14px;
  padding: 9px 12px;
  border-radius: 10px;
  background: #fff1f2;
  border: 1px solid #fecdd3;
  color: var(--color-danger-strong);
  font-size: 13px;
}

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

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  font-family: var(--font-stack);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out),
    background 0.18s var(--ease-out),
    color 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out);
}

.btn:active {
  transform: translateY(1px);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  color: #ffffff;
  background: var(--gradient-brand);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.32);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.42);
  transform: translateY(-1px);
}

.btn-ghost {
  color: var(--text-body);
  background: #f1f1f9;
  border-color: var(--border-soft);
}

.btn-ghost:hover {
  background: #e9e9f6;
  color: var(--text-strong);
}

.btn-danger {
  color: #ffffff;
  background: var(--color-danger);
  box-shadow: 0 4px 14px rgba(225, 29, 72, 0.28);
}

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

.btn-danger-ghost {
  color: var(--color-danger-strong);
  background: #fff1f2;
  border-color: #fecdd3;
}

.btn-danger-ghost:hover {
  background: #ffe4e6;
}

.btn:disabled,
.btn.is-loading {
  opacity: 0.65;
  cursor: wait;
  transform: none;
  box-shadow: none;
}

/* ========== 管理台骨架 ========== */
.admin-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.topbar-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.topbar-title {
  font-size: 17px;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

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

.topbar-link {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s var(--ease-out);
}

.topbar-link:hover {
  color: var(--color-primary-strong);
}

.default-pwd-warning {
  max-width: 1080px;
  margin: 16px auto 0;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-text);
  font-size: 13.5px;
  font-weight: 500;
}

.admin-body {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px 60px;
}

/* ========== 页签 ========== */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 22px;
  overflow-x: auto;
}

.tab {
  flex: none;
  padding: 10px 16px;
  font-family: var(--font-stack);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition:
    color 0.2s var(--ease-out),
    border-color 0.2s var(--ease-out);
}

.tab:hover {
  color: var(--text-strong);
}

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

/* ========== 面板 ========== */
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  padding: 24px 26px;
}

.panel-title {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-strong);
}

.panel-desc {
  margin: 0 0 20px;
  font-size: 13.5px;
  color: var(--text-muted);
}

.panel-loading,
.panel-empty {
  margin: 0;
  padding: 28px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13.5px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.6);
}

/* ========== 管理列表 ========== */
.admin-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

.admin-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  transition:
    border-color 0.2s var(--ease-out),
    box-shadow 0.2s var(--ease-out);
}

.admin-row:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.admin-row-main {
  min-width: 0;
  flex: 1;
}

.admin-row-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-strong);
}

.admin-row-date {
  display: block;
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.admin-row-url {
  display: block;
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--text-muted);
  word-break: break-all;
}

.admin-row-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.row-icon {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
  background: #f1f1f9;
}

.row-icon-letter {
  color: #ffffff;
  font-weight: 700;
  font-size: 15px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.row-link-info {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1;
}

/* ========== 数据管理（备份 / 导出 / 导入） ========== */
.panel-subtitle {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-strong);
}

.backup-list-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 24px 0 12px;
}

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

.backup-name {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  color: var(--text-body);
  word-break: break-all;
}

.import-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.import-row input[type="file"] {
  flex: 1 1 240px;
  min-width: 0;
  font-size: 13px;
  color: var(--text-body);
}

.import-row input[type="file"]::file-selector-button {
  margin-right: 10px;
  padding: 7px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  background: #ffffff;
  color: var(--text-strong);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.import-row input[type="file"]::file-selector-button:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-strong);
}

/* ========== 编辑器 ========== */
.editor {
  margin-top: 18px;
  animation: rise-in 0.35s var(--ease-out) backwards;
}

.editor-title {
  margin: 0 0 18px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-strong);
}

/* ========== Toast ========== */
.toast-host {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.toast {
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--text-strong);
  color: #ffffff;
  font-size: 13.5px;
  font-weight: 500;
  box-shadow: 0 10px 28px rgba(34, 31, 58, 0.3);
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.3s var(--ease-out),
    transform 0.3s var(--ease-out);
}

.toast.show {
  opacity: 1;
  transform: none;
}

.toast-success {
  background: linear-gradient(120deg, #059669, #10b981);
}

.toast-error {
  background: linear-gradient(120deg, #e11d48, #f43f5e);
}

/* ========== 确认弹窗 ========== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(34, 31, 58, 0.45);
  backdrop-filter: blur(3px);
  animation: fade-in 0.2s var(--ease-out);
}

.modal {
  width: min(420px, 100%);
  background: var(--bg-card);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(34, 31, 58, 0.3);
  padding: 24px 26px;
  animation: rise-in 0.25s var(--ease-out) backwards;
}

.modal-message {
  margin: 0 0 22px;
  font-size: 15px;
  color: var(--text-strong);
  line-height: 1.6;
}

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

/* ========== 动画 ========== */
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ========== 响应式 ========== */
@media (max-width: 640px) {
  .topbar-inner,
  .admin-body {
    padding-left: 16px;
    padding-right: 16px;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .panel-card {
    padding: 20px 18px;
  }

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

/* ========== 动效减弱 ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.01ms !important;
  }
}