/* =========================================================
   PowerTool · 共享样式
   工业仪表台 / 深色主题 / WCAG AA 对比度
   所有页面共用：设计令牌、重置、按钮、导航、状态条、表格、Toast、页脚
   ========================================================= */

/* ---------- 设计令牌 ---------- */
:root {
  /* 背景层（从深到浅） */
  --bg-900: #07090e;
  --bg-850: #0a0e14;
  --bg-800: #0f141d;
  --bg-700: #161c28;
  --bg-600: #1f2735;

  /* 边框 */
  --border: #232c3d;
  --border-strong: #324056;
  --border-soft: #1a2230;

  /* 文本（对比度满足 AA） */
  --text: #e8ecf2;
  --text-2: #aab3c4;
  --text-3: #7c8699;
  --text-4: #5a6376;

  /* 品牌色 */
  --amber: #ff8c42;
  --amber-soft: #ffa666;
  --amber-deep: #cc6e34;
  --phosphor: #3dd68c;
  --phosphor-soft: #5cf0a8;
  --alert: #ff6b6b;
  --info: #5ab0ff;

  /* 功能 */
  --radius: 10px;
  --radius-sm: 7px;
  --radius-lg: 16px;
  --container: 1140px;
  --header-h: 64px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
  --shadow-glow-amber: 0 0 0 1px rgba(255, 140, 66, 0.25), 0 10px 34px rgba(255, 140, 66, 0.2);
  --shadow-glow-phosphor: 0 0 0 1px rgba(61, 214, 140, 0.25), 0 10px 34px rgba(61, 214, 140, 0.16);

  /* 字体 */
  --font-sans: "Sora", system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

/* ---------- 重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg-900);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img,
svg {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
}
ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ---------- 无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
  border-radius: 4px;
}
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  background: var(--amber);
  color: #0a0e14;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 12px;
}
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
[hidden] {
  display: none !important;
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
.muted {
  color: var(--text-3);
}

/* ---------- 按钮 ---------- */
.btn {
  --btn-bg: var(--bg-700);
  --btn-fg: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.14s ease, background 0.18s, border-color 0.18s, box-shadow 0.18s, opacity 0.18s;
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}
.btn-primary {
  --btn-bg: var(--amber);
  --btn-fg: #0a0e14;
  border-color: var(--amber-soft);
  box-shadow: var(--shadow-glow-amber);
}
.btn-primary:hover {
  background: var(--amber-soft);
}
.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover {
  background: var(--bg-700);
  border-color: var(--text-3);
}
.btn-danger {
  --btn-bg: transparent;
  --btn-fg: var(--alert);
  border-color: rgba(255, 107, 107, 0.4);
}
.btn-danger:hover {
  background: rgba(255, 107, 107, 0.1);
  border-color: var(--alert);
}
.btn-lg {
  padding: 13px 24px;
  font-size: 1rem;
}
.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}
.btn-block {
  width: 100%;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(10, 14, 20, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(145deg, rgba(255, 140, 66, 0.18), rgba(255, 140, 66, 0.04));
  border: 1px solid rgba(255, 140, 66, 0.35);
  color: var(--amber);
}
.brand-accent {
  color: var(--amber);
}
.primary-nav {
  display: flex;
  align-items: center;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  padding: 8px 12px;
  border-radius: 7px;
  color: var(--text-2);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.15s, background 0.15s;
}
.nav-menu a:hover {
  color: var(--text);
  background: var(--bg-700);
}
.nav-menu a[aria-current="page"] {
  color: var(--amber);
  font-weight: 600;
}
.nav-cta {
  background: var(--amber);
  color: #0a0e14 !important;
  font-weight: 600 !important;
}
.nav-cta:hover {
  background: var(--amber-soft);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle-bar {
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 0.2s, opacity 0.2s;
}

/* ---------- 状态条 ---------- */
.statusbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-800);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  flex-wrap: wrap;
}
.status-led {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-4);
  box-shadow: inset 0 0 2px rgba(0, 0, 0, 0.5);
  flex-shrink: 0;
  transition: background 0.2s, box-shadow 0.2s;
}
.status-led.on {
  background: var(--phosphor);
  box-shadow: 0 0 8px var(--phosphor);
}
.status-led.busy,
.status-led.load {
  background: var(--amber);
  box-shadow: 0 0 8px var(--amber);
  animation: pulse 1.2s ease-in-out infinite;
}
.status-led.err {
  background: var(--alert);
  box-shadow: 0 0 8px var(--alert);
}
.status-text {
  font-weight: 600;
  color: var(--text);
}
.status-divider {
  width: 1px;
  height: 14px;
  background: var(--border-strong);
}
.status-meta {
  color: var(--text-3);
  font-family: var(--font-mono);
}
.status-spacer {
  flex: 1;
  min-width: 8px;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ---------- 表单基础 ---------- */
.form-row {
  margin-bottom: 14px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field-label {
  font-size: 0.74rem;
  color: var(--text-3);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.req {
  color: var(--amber);
  font-weight: 700;
}
.input {
  height: 38px;
  padding: 0 12px;
  background: var(--bg-900);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
.input:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 140, 66, 0.15);
}
.input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  background: var(--bg-850);
}
.input::placeholder {
  color: var(--text-4);
}
.input-sm {
  height: 30px;
  font-size: 0.78rem;
  padding: 0 8px;
}
.textarea {
  height: auto;
  padding: 10px 12px;
  font-family: var(--font-mono);
  resize: vertical;
  min-height: 88px;
  line-height: 1.55;
}
input[type="number"].input {
  -moz-appearance: textfield;
}
input[type="number"].input::-webkit-outer-spin-button,
input[type="number"].input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* ---------- 搜索框 ---------- */
.search-box {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.search-box > svg {
  position: absolute;
  left: 9px;
  color: var(--text-3);
  pointer-events: none;
}
.search-input {
  padding-left: 28px;
  width: 220px;
  max-width: 50vw;
}

/* ---------- 表格基础 ---------- */
.table-wrap {
  position: relative;
  flex: 1;
  overflow: auto;
  background: var(--bg-900);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  min-height: 220px;
}
.table-wrap::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.table-wrap::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}
.table-wrap::-webkit-scrollbar-thumb:hover {
  background: var(--text-4);
}
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.86rem;
}
.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  text-align: left;
  padding: 11px 14px;
  background: var(--bg-800);
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table th.num,
.data-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.data-table th.ops,
.data-table td.ops {
  text-align: right;
  white-space: nowrap;
}
.data-table tbody tr {
  transition: background 0.12s;
}
.data-table tbody tr + tr td {
  border-top: 1px solid var(--border-soft);
}
.data-table tbody tr:hover {
  background: rgba(255, 140, 66, 0.04);
}
.data-table tbody td {
  padding: 11px 14px;
  color: var(--text);
  vertical-align: middle;
}

/* 行内操作按钮 */
.row-actions {
  display: inline-flex;
  gap: 6px;
  justify-content: flex-end;
  width: 100%;
}
.icon-btn {
  width: 30px;
  height: 30px;
  display: inline-grid;
  place-items: center;
  background: var(--bg-900);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.icon-btn:hover {
  background: var(--bg-700);
  color: var(--text);
  border-color: var(--border-strong);
}
.icon-btn.danger:hover {
  color: var(--alert);
  border-color: rgba(255, 107, 107, 0.5);
  background: rgba(255, 107, 107, 0.08);
}
.icon-btn.edit:hover {
  color: var(--amber);
  border-color: rgba(255, 140, 66, 0.5);
  background: rgba(255, 140, 66, 0.08);
}

/* ---------- 空 / 加载状态 ---------- */
.empty-state,
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 56px 20px;
  color: var(--text-3);
  text-align: center;
}
.loading-state {
  position: absolute;
  inset: 0;
  background: rgba(7, 9, 14, 0.78);
  backdrop-filter: blur(2px);
  flex-direction: row;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.empty-icon {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  color: var(--text-4);
  line-height: 1;
  opacity: 0.6;
}
.empty-text {
  margin: 0;
  font-size: 1rem;
  color: var(--text-2);
  font-weight: 500;
}
.empty-hint {
  margin: 0;
  font-size: 0.82rem;
}
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Toast ---------- */
.toast-stack {
  position: fixed;
  top: calc(var(--header-h) + 14px);
  right: 18px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: calc(100vw - 36px);
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  min-width: 240px;
  max-width: 360px;
  background: var(--bg-800);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--phosphor);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 0.88rem;
  pointer-events: auto;
  animation: toast-in 0.22s ease;
}
.toast.success {
  border-left-color: var(--phosphor);
}
.toast.err,
.toast.error {
  border-left-color: var(--alert);
}
.toast.info {
  border-left-color: var(--info);
}
.toast-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--phosphor);
  flex-shrink: 0;
}
.toast.err .toast-dot,
.toast.error .toast-dot {
  background: var(--alert);
}
.toast.info .toast-dot {
  background: var(--info);
}
.toast.is-leaving {
  animation: toast-out 0.2s ease forwards;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: none; }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateX(20px); }
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--bg-900);
  padding: 48px 0 24px;
  border-top: 1px solid var(--border-soft);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-soft);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-brand strong {
  font-size: 1.05rem;
}
.footer-brand p {
  margin: 2px 0 0;
  font-size: 0.85rem;
}
.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.footer-nav h4 {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-3);
  margin: 0 0 12px;
  font-weight: 600;
}
.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-nav a {
  color: var(--text-2);
  font-size: 0.88rem;
  transition: color 0.15s;
}
.footer-nav a:hover {
  color: var(--amber);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  padding-top: 20px;
  font-size: 0.8rem;
}

/* ---------- 滚动揭示 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* =========================================================
   响应式 · 共享断点
   ========================================================= */
@media (min-width: 720px) {
  .footer-inner {
    grid-template-columns: 1fr 2fr;
  }
  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 移动端导航折叠（统一 760px 断点） */
@media (max-width: 760px) {
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px;
    background: var(--bg-850);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.2s, opacity 0.2s;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu a {
    padding: 12px 14px;
    border-radius: 8px;
  }
  .nav-cta {
    text-align: center;
    margin-top: 4px;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .toast-stack {
    right: 12px;
    left: 12px;
  }
  .toast {
    max-width: none;
    min-width: 0;
  }
  .search-input {
    width: 100%;
  }
}

/* 超窄屏：表格转为卡片视图（统一 560px 断点） */
@media (max-width: 560px) {
  .data-table thead {
    display: none;
  }
  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td {
    display: block;
    width: 100%;
  }
  .data-table tbody tr {
    background: var(--bg-850);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    margin-bottom: 10px;
  }
  .data-table tbody tr + tr td {
    border-top: none;
  }
  .data-table tbody td {
    padding: 6px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    text-align: right;
  }
  .data-table tbody td::before {
    content: attr(data-label);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-3);
    font-weight: 600;
    text-align: left;
  }
  .data-table td.ops,
  .data-table td[data-label="操作"] {
    justify-content: flex-end;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
}