/**
 * PolyClaw 全局 CSS 系统 — CSS Custom Properties
 * 统一颜色 / 间距 / 圆角 / 字体，所有页面共享
 * 原生 APP 风格：干净、深色科技风
 */

/* ============================
   1. CSS Custom Properties
   ============================ */
:root {
  /* 背景 */
  --pc-bg-base:      #050a14;
  --pc-bg-raised:    #0b0e18;
  --pc-bg-card:      #0f1623;
  --pc-bg-input:     rgba(255,255,255,0.04);

  /* 边框 */
  --pc-border:       rgba(255,255,255,0.07);
  --pc-border-hover: rgba(255,255,255,0.14);
  --pc-border-accent:rgba(6,182,212,0.35);

  /* 主色调 */
  --pc-purple:       #7c3aed;
  --pc-purple-dim:   rgba(124,58,237,0.18);
  --pc-cyan:         #06b6d4;
  --pc-cyan-dim:     rgba(6,182,212,0.18);
  --pc-fuchsia:      #d946ef;
  --pc-amber:         #f59e0b;
  --pc-emerald:       #10b981;
  --pc-red:           #ef4444;

  /* 文字 */
  --pc-text-primary: #f1f5f9;
  --pc-text-secondary:#94a3b8;
  --pc-text-muted:    #475569;
  --pc-text-accent:   #22d3ee;

  /* 渐变 */
  --pc-grad-hero:    linear-gradient(135deg, #7c3aed 0%, #db2777 50%, #06b6d4 100%);
  --pc-grad-btn:      linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
  --pc-grad-card:     linear-gradient(135deg, rgba(124,58,237,0.12) 0%, rgba(6,182,212,0.08) 100%);

  /* 间距 */
  --pc-space-1:  0.25rem;  /* 4px  */
  --pc-space-2:  0.5rem;   /* 8px  */
  --pc-space-3:  0.75rem;  /* 12px */
  --pc-space-4:  1rem;      /* 16px */
  --pc-space-5:  1.25rem;   /* 20px */
  --pc-space-6:  1.5rem;    /* 24px */
  --pc-space-8:  2rem;      /* 32px */

  /* 圆角 */
  --pc-radius-sm:  0.5rem;   /* 8px  */
  --pc-radius-md:  0.875rem;  /* 14px */
  --pc-radius-lg:  1.25rem;   /* 20px */
  --pc-radius-xl:  1.5rem;    /* 24px */
  --pc-radius-2xl: 2rem;      /* 32px */

  /* 阴影 */
  --pc-shadow-card: 0 4px 24px rgba(0,0,0,0.4), 0 1px 4px rgba(0,0,0,0.3);
  --pc-shadow-glow: 0 0 32px rgba(6,182,212,0.18);
  --pc-shadow-glow-purple: 0 0 32px rgba(124,58,237,0.25);

  /* 过渡 */
  --pc-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --pc-transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================
   2. 基础重置
   ============================ */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  background-color: var(--pc-bg-base);
  color: var(--pc-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; outline: none; }

/* ============================
   3. 滚动条美化
   ============================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.22); }

/* ============================
   4. 动画 Keyframes
   ============================ */
@keyframes pc-fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pc-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes pc-slide-in-left {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}
@keyframes pc-slide-out-left {
  from { transform: translateX(0); }
  to   { transform: translateX(-100%); }
}
@keyframes pc-counter-tick {
  0%   { transform: translateY(8px); opacity: 0; }
  40%  { transform: translateY(-2px); opacity: 1; }
  60%  { transform: translateY(1px); opacity: 1; }
  100% { transform: translateY(0); opacity: 1; }
}
@keyframes pc-pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.85); }
}

/* ============================
   5. 滚动渐入
   默认即显示：若 app.js 未执行（拦截/报错），旧版 [data-reveal]{opacity:0} 会使主内容整块不可见（像全黑空白）。
   仍保留 .pc-reveal-visible 供脚本按需增强；无 JS 时不依赖该类。
   ============================ */
[data-reveal] {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
[data-reveal].pc-reveal-visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* ============================
   6. 通用卡片
   ============================ */
.pc-card {
  background: var(--pc-bg-card);
  border: 1px solid var(--pc-border);
  border-radius: var(--pc-radius-lg);
  box-shadow: var(--pc-shadow-card);
  transition: transform var(--pc-transition),
              box-shadow var(--pc-transition),
              border-color var(--pc-transition),
              background var(--pc-transition);
}
.pc-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--pc-shadow-glow), var(--pc-shadow-card);
  border-color: var(--pc-border-accent);
  background: rgba(255,255,255,0.03);
}
.pc-card--accent {
  border-color: rgba(124,58,237,0.3);
  background: linear-gradient(135deg, rgba(124,58,237,0.08) 0%, rgba(6,182,212,0.05) 100%);
}

/* ============================
   7. 通用按钮
   ============================ */
.pc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--pc-space-2);
  padding: var(--pc-space-3) var(--pc-space-5);
  border-radius: var(--pc-radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  transition: transform var(--pc-transition),
              box-shadow var(--pc-transition),
              filter var(--pc-transition),
              background var(--pc-transition);
  cursor: pointer;
  border: none;
  outline: none;
  white-space: nowrap;
}
.pc-btn:hover { transform: translateY(-2px); filter: brightness(1.08); }
.pc-btn:active { transform: translateY(0); }

.pc-btn--primary {
  background: var(--pc-grad-btn);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124,58,237,0.3);
}
.pc-btn--primary:hover { box-shadow: 0 8px 32px rgba(124,58,237,0.4), 0 0 20px rgba(6,182,212,0.2); }

.pc-btn--ghost {
  background: rgba(255,255,255,0.05);
  color: var(--pc-text-primary);
  border: 1px solid var(--pc-border);
}
.pc-btn--ghost:hover { background: rgba(255,255,255,0.09); border-color: var(--pc-border-hover); }

.pc-btn--white {
  background: #fff;
  color: var(--pc-purple);
}
.pc-btn--white:hover { background: #f0f0ff; }

/* ============================
   8. 渐变文字
   ============================ */
.pc-text-grad {
  background: var(--pc-grad-hero);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.pc-text-cyan { color: var(--pc-cyan); }
.pc-text-purple { color: var(--pc-purple); }
.pc-text-fuchsia { color: var(--pc-fuchsia); }
.pc-text-emerald { color: var(--pc-emerald); }
.pc-text-amber { color: var(--pc-amber); }
.pc-text-red { color: var(--pc-red); }
.pc-text-muted { color: var(--pc-text-muted); }

/* ============================
   9. 顶栏 (Top Navigation)
   ============================ */
.pc-topnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 56px;
  background: rgba(5, 10, 20, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--pc-border);
  transition: background var(--pc-transition), box-shadow var(--pc-transition);
}
.pc-topnav--scrolled {
  background: rgba(5, 10, 20, 0.97);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.pc-topnav__inner {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 var(--pc-space-4);
  gap: var(--pc-space-3);
}
.pc-topnav__brand {
  flex-shrink: 1;
  min-width: 0;
  font-size: 1.05rem;
}
@media (min-width: 640px) {
  .pc-topnav__brand { font-size: 1.125rem; }
}
@media (max-width: 380px) {
  .pc-user-label { display: none; }
}
.pc-topnav__hamburger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--pc-radius-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--pc-border);
  color: var(--pc-text-primary);
  transition: background var(--pc-transition);
  flex-shrink: 0;
}
.pc-topnav__hamburger:hover { background: rgba(255,255,255,0.1); }
@media (min-width: 1024px) { .pc-topnav__hamburger { display: none; } }

.pc-topnav__spacer { flex: 1; }
.pc-topnav__right {
  display: flex;
  align-items: center;
  gap: var(--pc-space-2);
  flex-shrink: 0;
  min-width: 0;
  max-width: 100%;
}

/* Logo */
.pc-logo {
  display: flex;
  align-items: center;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  gap: 0;
  transition: opacity var(--pc-transition);
}
.pc-logo:hover { opacity: 0.85; }
.pc-logo__poly { color: #f97316; }
.pc-logo__claw { color: #fff; }

/* 图标通用 */
.pc-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.pc-icon--sm { width: 14px; height: 14px; }
.pc-icon--lg { width: 24px; height: 24px; }

/* ============================
   10. 语言切换
   ============================ */
.pc-lang-wrap { position: relative; }

.pc-lang-trigger {
  display: flex;
  align-items: center;
  gap: var(--pc-space-2);
  padding: var(--pc-space-2) var(--pc-space-3);
  border-radius: var(--pc-radius-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--pc-border);
  color: var(--pc-text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background var(--pc-transition), border-color var(--pc-transition), color var(--pc-transition);
  white-space: nowrap;
}
.pc-lang-trigger:hover, .pc-lang-trigger[aria-expanded="true"] {
  background: rgba(255,255,255,0.09);
  border-color: var(--pc-border-hover);
  color: var(--pc-text-primary);
}
.pc-lang-label { max-width: 56px; overflow: hidden; text-overflow: ellipsis; }

.pc-lang-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 100;
  min-width: 180px;
  background: var(--pc-bg-card);
  border: 1px solid var(--pc-border);
  border-radius: var(--pc-radius-md);
  box-shadow: 0 16px 48px rgba(0,0,0,0.6), 0 4px 12px rgba(0,0,0,0.4);
  padding: var(--pc-space-2);
  display: none;
  animation: pc-fade-in 0.15s ease;
}
.pc-lang-panel.pc-open { display: block; }

/* 首页顶栏：下拉在视口内水平居中，避免窄屏贴右裁切 */
.pc-lang-wrap--home { z-index: 60; }
.pc-lang-panel--home {
  left: 50%;
  right: auto;
  transform: translateX(-50%);
  min-width: min(17.5rem, calc(100vw - 1.5rem));
  max-width: calc(100vw - 1.5rem);
  max-height: min(70vh, 22rem);
  overflow-y: auto;
}

.pc-lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--pc-space-2) var(--pc-space-3);
  border-radius: var(--pc-radius-sm);
  font-size: 0.875rem;
  color: var(--pc-text-secondary);
  transition: background var(--pc-transition), color var(--pc-transition);
  text-align: left;
}
.pc-lang-option:hover { background: rgba(255,255,255,0.06); color: var(--pc-text-primary); }
.pc-lang-option--on { color: var(--pc-text-primary); background: var(--pc-purple-dim); }
.pc-lang-option--on:hover { background: var(--pc-purple-dim); }
.pc-lang-check { color: var(--pc-cyan); font-size: 0.75rem; }

/* ============================
   11. 用户按钮
   ============================ */
.pc-user-btn {
  display: flex;
  align-items: center;
  gap: var(--pc-space-2);
  padding: var(--pc-space-2) var(--pc-space-3);
  border-radius: var(--pc-radius-sm);
  background: var(--pc-cyan-dim);
  border: 1px solid rgba(6,182,212,0.3);
  color: var(--pc-text-primary);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background var(--pc-transition), border-color var(--pc-transition);
  white-space: nowrap;
}
.pc-user-btn:hover { background: rgba(6,182,212,0.25); border-color: rgba(6,182,212,0.5); }

.pc-user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--pc-radius-sm);
  background: var(--pc-cyan);
  color: var(--pc-bg-base);
  flex-shrink: 0;
}
.pc-user-avatar svg { width: 14px; height: 14px; }

/* ============================
   12. 侧栏 (Sidebar)
   ============================ */
.pc-sidebar-backdrop {
  position: fixed;
  inset: 0;
  z-index: 39;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--pc-transition-slow);
}
.pc-sidebar-backdrop.pc-open {
  opacity: 1;
  pointer-events: auto;
}

.pc-sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  width: 280px;
  background: var(--pc-bg-raised);
  border-right: 1px solid var(--pc-border);
  transform: translateX(-100%);
  transition: transform var(--pc-transition-slow);
  overflow: hidden;
}
.pc-sidebar.pc-open {
  transform: translateX(0);
}
@media (min-width: 1024px) {
  .pc-sidebar {
    transform: translateX(0);
  }
  .pc-sidebar-backdrop { display: none; }
}

/* 侧栏头部 */
.pc-sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 var(--pc-space-4);
  border-bottom: 1px solid var(--pc-border);
  flex-shrink: 0;
}
.pc-sidebar__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--pc-radius-sm);
  color: var(--pc-text-muted);
  transition: background var(--pc-transition), color var(--pc-transition);
}
.pc-sidebar__close:hover { background: rgba(255,255,255,0.08); color: var(--pc-text-primary); }
@media (min-width: 1024px) { .pc-sidebar__close { display: none; } }

/* 侧栏导航 */
.pc-sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--pc-space-3) var(--pc-space-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pc-nav-item {
  display: flex;
  align-items: center;
  gap: var(--pc-space-3);
  padding: var(--pc-space-3) var(--pc-space-3);
  border-radius: var(--pc-radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--pc-text-secondary);
  transition: background var(--pc-transition), color var(--pc-transition), box-shadow var(--pc-transition);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
}
.pc-nav-item:hover {
  background: rgba(255,255,255,0.05);
  color: var(--pc-text-primary);
}
.pc-nav-item--active {
  background: linear-gradient(135deg, rgba(124,58,237,0.2) 0%, rgba(6,182,212,0.12) 100%);
  color: #fff;
  border-color: rgba(124,58,237,0.3);
  box-shadow: 0 0 20px rgba(124,58,237,0.15);
}
.pc-nav-item--active:hover { background: linear-gradient(135deg, rgba(124,58,237,0.25) 0%, rgba(6,182,212,0.15) 100%); }
.pc-nav-item__icon { width: 20px; height: 20px; flex-shrink: 0; opacity: 0.8; }
.pc-nav-item--active .pc-nav-item__icon { opacity: 1; }

/* 侧栏底部 */
.pc-sidebar__footer {
  border-top: 1px solid var(--pc-border);
  padding: var(--pc-space-4);
  flex-shrink: 0;
}
.pc-online-badge {
  display: flex;
  align-items: center;
  gap: var(--pc-space-2);
  padding: var(--pc-space-2) var(--pc-space-3);
  border-radius: var(--pc-radius-md);
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  font-size: 0.75rem;
  color: #34d399;
}
.pc-online-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  flex-shrink: 0;
  animation: pc-pulse-dot 2s ease-in-out infinite;
}

/* ============================
   13. 主内容区
   ============================ */
.pc-main {
  min-height: 100vh;
  padding-top: 56px; /* 顶栏高度 */
}
@media (min-width: 1024px) {
  .pc-main { padding-left: 280px; }
}
.pc-content {
  padding: var(--pc-space-6) var(--pc-space-4);
  max-width: 1200px;
  margin: 0 auto;
}
@media (min-width: 640px) { .pc-content { padding: var(--pc-space-8) var(--pc-space-6); } }

/* ============================
   14. 数据数字动画
   ============================ */
.pc-stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  display: inline-block;
  font-variant-numeric: tabular-nums;
  /* 滚动时避免子像素抖动 */
  -webkit-font-smoothing: antialiased;
}

/* 数字增长过程中：轻微霓虹高光，与渐变字兼容（首页统计 + 仪表盘 KPI） */
.pc-stat-number.pc-counter-animating,
.pc-dash-counter.pc-counter-animating,
.pc-dash-counter--hero.pc-counter-animating {
  text-shadow:
    0 0 24px rgba(6, 182, 212, 0.45),
    0 0 48px rgba(124, 58, 237, 0.2);
}

.pc-dash-counter,
.pc-dash-counter--hero {
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}
.pc-dash-counter--hero {
  display: inline-block;
}

@media (prefers-reduced-motion: reduce) {
  .pc-stat-number.pc-counter-animating,
  .pc-dash-counter.pc-counter-animating,
  .pc-dash-counter--hero.pc-counter-animating {
    text-shadow: none;
  }
}

.pc-stat-digit {
  display: inline-block;
  animation: pc-counter-tick 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  opacity: 0;
}
.pc-stat-unit {
  font-size: 0.6em;
  font-weight: 600;
  opacity: 0.8;
}

/* ============================
   15. 进度条
   ============================ */
.pc-progress-track {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: 9999px;
  overflow: hidden;
}
.pc-progress-fill {
  height: 100%;
  border-radius: 9999px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================
   16. 辅助类
   ============================ */
.pc-hidden { display: none !important; }
.pc-visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}
.pc-divider { border: none; border-top: 1px solid var(--pc-border); margin: var(--pc-space-4) 0; }
.pc-section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--pc-text-primary);
  margin-bottom: var(--pc-space-4);
}
.pc-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--pc-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================
   17. 图表详情弹窗（仪表盘）
   ============================ */
.pc-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 240;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--pc-space-4);
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0.22s ease;
}
.pc-modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}
.pc-modal {
  width: 100%;
  max-width: 22rem;
  border-radius: var(--pc-radius-lg);
  border: 1px solid var(--pc-border);
  background: var(--pc-bg-card);
  padding: var(--pc-space-5);
  box-shadow: var(--pc-shadow-card), var(--pc-shadow-glow);
  transform: scale(0.96);
  transition: transform 0.22s cubic-bezier(0.22, 1, 0.36, 1);
}
.pc-modal-backdrop.is-open .pc-modal {
  transform: scale(1);
}
.pc-modal__row {
  display: flex;
  justify-content: space-between;
  gap: var(--pc-space-3);
  padding: var(--pc-space-2) 0;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--pc-border);
}
.pc-modal__row:last-of-type { border-bottom: none; }
.pc-modal__label { color: var(--pc-text-muted); }
.pc-modal__value { color: var(--pc-text-primary); font-weight: 600; text-align: right; }