/* =========================================================================
   HiFileBox 原生 CSS 设计系统
   - CSS 变量驱动的设计令牌
   - 玻璃态、渐变光晕、微动效
   - 语义化组件类，无外部依赖
   ========================================================================= */

/* ---------- 设计令牌 ---------- */
:root {
  /* 背景层级 */
  --bg-base: #070b16;
  --bg-surface: #0f1424;
  --bg-elevated: #161d33;
  --bg-glass: rgba(22, 29, 51, 0.55);
  --bg-glass-strong: rgba(15, 20, 36, 0.85);

  /* 边框 */
  --border: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.22);
  --border-hover: rgba(56, 189, 248, 0.45);

  /* 文本 */
  --text-primary: #e8edf7;
  --text-secondary: #a3b1cc;
  --text-muted: #64748b;
  --text-faint: #475569;

  /* 主色 */
  --accent: #38bdf8;
  --accent-bright: #7dd3fc;
  --accent-deep: #0ea5e9;
  --accent-glow: rgba(56, 189, 248, 0.35);
  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #06b6d4 100%);
  --accent-gradient-soft: linear-gradient(135deg, rgba(56,189,248,0.15) 0%, rgba(6,182,212,0.05) 100%);

  /* 状态色 */
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #f43f5e;
  --danger-bg: rgba(244, 63, 94, 0.12);
  --violet: #a78bfa;
  --violet-bg: rgba(167, 139, 250, 0.12);

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 32px var(--accent-glow);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border);

  /* 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 间距 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* 字体 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;

  /* 动效 */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 0.15s;
  --dur: 0.25s;
  --dur-slow: 0.4s;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }
img { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }
code, pre { font-family: var(--font-mono); }
ul, ol { list-style: none; }

/* ---------- 自定义滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-base);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-deep); }
::selection { background: var(--accent-glow); color: var(--text-primary); }

/* ---------- 动画背景 ---------- */
.bg-aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--bg-base);
  overflow: hidden;
}
.bg-aurora::before,
.bg-aurora::after {
  content: '';
  position: absolute;
  width: 60vw;
  height: 60vw;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  animation: float-orb 20s ease-in-out infinite;
}
.bg-aurora::before {
  top: -20%;
  left: -10%;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.5), transparent 70%);
}
.bg-aurora::after {
  bottom: -20%;
  right: -10%;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.4), transparent 70%);
  animation-delay: -10s;
  animation-direction: reverse;
}
@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(5%, 8%) scale(1.1); }
  66% { transform: translate(-5%, -5%) scale(0.95); }
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ---------- 布局工具 ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-6); }
.container-sm { max-width: 640px; margin: 0 auto; padding: 0 var(--space-6); }
.container-lg { max-width: 1400px; margin: 0 auto; padding: 0 var(--space-6); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1 1 0%; min-width: 0; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.w-full { width: 100%; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-6xl { max-width: 72rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-5 { padding-left: var(--space-5); padding-right: var(--space-5); }
.hidden { display: none; }
.sm-only { display: none; }
@media (max-width: 768px) {
  .grid-cols-2, .grid-cols-3, .grid-cols-4, .grid-cols-6 { grid-template-columns: 1fr; }
  .md-flex-row { flex-direction: column !important; }
  .lg-hidden { display: block; }
}
@media (max-width: 640px) {
  .sm-hidden { display: none; }
  .sm-only { display: block; }
}

/* ---------- 文本工具 ---------- */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-mono { font-family: var(--font-mono); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-faint { color: var(--text-faint); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-violet { color: var(--violet); }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }
.uppercase { text-transform: uppercase; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 玻璃卡片 ---------- */
.card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card-hover:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--border-hover);
  transform: translateY(-2px);
}
.card-glow {
  position: relative;
  overflow: hidden;
}
.card-glow::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(56, 189, 248, 0.1), transparent 40%);
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease);
  pointer-events: none;
}
.card-glow:hover::before { opacity: 1; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  user-select: none;
  border: 1px solid transparent;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn svg { width: 1em; height: 1em; flex-shrink: 0; }

.btn-primary {
  background: var(--accent-gradient);
  color: #04131f;
  box-shadow: 0 4px 14px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.3);
  filter: brightness(1.08);
}
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.3) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease);
}
.btn-primary:hover::after { transform: translateX(100%); }

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-secondary:hover:not(:disabled) {
  border-color: var(--border-hover);
  background: var(--bg-surface);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover:not(:disabled) {
  background: rgba(148, 163, 184, 0.08);
  color: var(--text-primary);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #be123c);
  color: white;
  box-shadow: 0 4px 14px rgba(244, 63, 94, 0.3);
}
.btn-danger:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(244, 63, 94, 0.4);
  filter: brightness(1.1);
}

.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.75rem; }
.btn-lg { padding: 0.875rem 1.75rem; font-size: 1rem; }
.btn-block { width: 100%; }

/* ---------- 表单 ---------- */
.label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.input, .select, .textarea {
  width: 100%;
  padding: 0.625rem 1rem;
  background: rgba(15, 20, 36, 0.6);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-primary);
  transition: all var(--dur) var(--ease);
  outline: none;
}
.input::placeholder, .textarea::placeholder { color: var(--text-faint); }
.input:hover, .select:hover, .textarea:hover { border-color: var(--border-hover); }
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(15, 20, 36, 0.9);
}
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a3b1cc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.select option { background: var(--bg-surface); color: var(--text-primary); }
.textarea { resize: vertical; min-height: 80px; }

/* 文件输入 */
input[type="file"] {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: rgba(15, 20, 36, 0.6);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease);
}
input[type="file"]:hover { border-color: var(--border-hover); }
input[type="file"]::file-selector-button {
  padding: 0.5rem 1rem;
  margin-right: 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg, rgba(56, 189, 248, 0.1));
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
input[type="file"]::file-selector-button:hover {
  background: rgba(56, 189, 248, 0.2);
  color: var(--accent-bright);
}

/* ---------- 徽章 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.625rem;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.25); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.25); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(244, 63, 94, 0.25); }
.badge-info { background: rgba(56, 189, 248, 0.12); color: var(--accent); border: 1px solid rgba(56, 189, 248, 0.25); }
.badge-muted { background: rgba(148, 163, 184, 0.1); color: var(--text-secondary); border: 1px solid var(--border); }
.badge-violet { background: var(--violet-bg); color: var(--violet); border: 1px solid rgba(167, 139, 250, 0.25); }
.badge-dot::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  margin-right: 2px;
}
.badge-pulse::before { animation: pulse-dot 2s ease-in-out infinite; }
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); }
.table { width: 100%; font-size: 0.875rem; }
.table thead { background: rgba(7, 11, 22, 0.6); }
.table th {
  padding: 0.75rem 1.25rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table td {
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.table tbody tr { transition: background var(--dur) var(--ease); }
.table tbody tr:hover { background: rgba(56, 189, 248, 0.04); }
.table tbody tr:last-child td { border-bottom: none; }
.table .text-right { text-align: right; }

/* ---------- 导航 ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 11, 22, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.navbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}
.brand-logo {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--accent-gradient);
  color: #04131f;
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: transform var(--dur) var(--ease-bounce);
}
.brand:hover .brand-logo { transform: rotate(-8deg) scale(1.05); }
.nav-actions { display: flex; align-items: center; gap: var(--space-2); }

/* ---------- 进度条 ---------- */
.progress {
  height: 8px;
  width: 100%;
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  transition: width 0.8s var(--ease);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ---------- 提示框 ---------- */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  font-size: 0.875rem;
  border: 1px solid;
  animation: alert-in 0.4s var(--ease);
}
@keyframes alert-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.alert-error { background: var(--danger-bg); border-color: rgba(244, 63, 94, 0.4); color: var(--danger); }
.alert-success { background: var(--success-bg); border-color: rgba(16, 185, 129, 0.4); color: var(--success); }
.alert-warning { background: var(--warning-bg); border-color: rgba(245, 158, 11, 0.4); color: var(--warning); }
.alert-info { background: rgba(56, 189, 248, 0.08); border-color: rgba(56, 189, 248, 0.3); color: var(--accent); }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: var(--space-12);
  padding: var(--space-6) 0;
}
.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: var(--space-2);
}
.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  margin-right: 6px;
  animation: pulse-dot 2s ease-in-out infinite;
}

/* ---------- 管理后台布局 ---------- */
.admin-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: rgba(7, 11, 22, 0.85);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar-header {
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--border);
}
.sidebar-nav { flex: 1; padding: var(--space-3); overflow-y: auto; }
.sidebar-footer { padding: var(--space-3); border-top: 1px solid var(--border); }
.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.625rem var(--space-3);
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
  transition: all var(--dur) var(--ease);
  position: relative;
}
.nav-item:hover { background: rgba(148, 163, 184, 0.08); color: var(--text-primary); }
.nav-item.active {
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--accent-gradient);
  border-radius: 0 3px 3px 0;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-section-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  padding: var(--space-4) var(--space-3) var(--space-2);
}
.admin-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

/* 移动端顶栏 */
.admin-topbar {
  display: none;
  height: 56px;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--border);
  background: rgba(7, 11, 22, 0.8);
  backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.admin-topbar .brand { font-size: 1rem; }
.admin-topbar .brand-logo { width: 32px; height: 32px; }
/* 移动端水平导航 */
.admin-nav-mobile {
  display: none;
  padding: var(--space-2);
  gap: var(--space-1);
  border-bottom: 1px solid var(--border);
  background: rgba(7, 11, 22, 0.6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.admin-nav-mobile .nav-item {
  margin-bottom: 0;
  white-space: nowrap;
  padding: 0.5rem var(--space-3);
}
.admin-nav-mobile .nav-item.active::before { display: none; }
.admin-content { flex: 1; padding: var(--space-8); overflow-x: hidden; }
@media (max-width: 1024px) {
  .sidebar { display: none; }
  .admin-topbar { display: flex; }
  .admin-nav-mobile { display: flex; }
  .admin-content { padding: var(--space-4); }
}
@media (max-width: 640px) {
  .admin-content { padding: var(--space-3); }
}

/* ---------- 用户头像 ---------- */
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  flex-shrink: 0;
}

/* ---------- 统计卡片 ---------- */
.stat-card {
  padding: var(--space-5);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.stat-card:hover::before { opacity: 1; }
.stat-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}
.stat-label svg { width: 14px; height: 14px; }
.stat-value {
  font-size: 1.875rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-sub {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: var(--space-1);
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-3);
}
.stat-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
@media (max-width: 1280px) { .stat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .stat-grid, .stat-grid-4 { grid-template-columns: 1fr; }
  .stat-value { font-size: 1.5rem; }
}

/* ---------- 页头 ---------- */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.page-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: var(--space-1);
}
.page-actions { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }

/* ---------- 管理员用户信息 ---------- */
.admin-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
}
.admin-user-info { flex: 1; min-width: 0; }
.admin-user-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.admin-user-role {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* ---------- 卡片头部 ---------- */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}
.card-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.card-body { padding: var(--space-5) var(--space-6); }
.card-body-sm { padding: var(--space-4) var(--space-5); }

/* ---------- 代码标签 ---------- */
.code-tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-bright);
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.1em;
  font-weight: 600;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

/* ---------- 表格行链接 ---------- */
.table-row-link { transition: background var(--dur) var(--ease); }
.table-row-link:hover { background: rgba(56, 189, 248, 0.04); }
.table a.cell-link { color: var(--text-primary); font-weight: 500; transition: color var(--dur) var(--ease); }
.table a.cell-link:hover { color: var(--accent); }
.table .mono { font-family: var(--font-mono); }

/* ---------- 表单组 ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.form-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
@media (max-width: 768px) {
  .form-grid, .form-grid-3, .form-grid-4 { grid-template-columns: 1fr; }
}
.form-row { display: flex; gap: var(--space-3); flex-wrap: wrap; align-items: flex-end; }
.required { color: var(--danger); }
.help-text { font-size: 0.75rem; color: var(--text-muted); margin-top: var(--space-1); }

/* ---------- 空状态（表格内） ---------- */
.empty-inline {
  text-align: center;
  padding: var(--space-10) var(--space-6);
  color: var(--text-muted);
  font-size: 0.875rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}

/* ---------- 图标方块 ---------- */
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text-muted);
  flex-shrink: 0;
}
.icon-box-lg {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
}

/* ---------- 渐变文本 ---------- */
.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #7dd3fc 50%, #67e8f9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.gradient-text-accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 入场动画 ---------- */
.fade-in { animation: fade-in 0.6s var(--ease) both; }
.fade-in-up { animation: fade-in-up 0.6s var(--ease) both; }
.fade-in-down { animation: fade-in-down 0.6s var(--ease) both; }
.scale-in { animation: scale-in 0.5s var(--ease-bounce) both; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes fade-in-up { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade-in-down { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scale-in { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }

.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.1s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.2s; }
.stagger-5 { animation-delay: 0.25s; }
.stagger-6 { animation-delay: 0.3s; }

/* ---------- 加载动画 ---------- */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.shimmer {
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-surface) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-muted);
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb svg { width: 14px; height: 14px; }

/* ---------- 空状态 ---------- */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
}
.empty-state svg { width: 48px; height: 48px; margin: 0 auto var(--space-3); opacity: 0.4; }

/* ---------- Toast 通知 ---------- */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}
.toast {
  background: var(--bg-glass-strong);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  box-shadow: var(--shadow-lg);
  min-width: 280px;
  max-width: 400px;
  animation: toast-in 0.4s var(--ease-bounce);
  pointer-events: auto;
}
.toast.toast-out { animation: toast-out 0.3s var(--ease) forwards; }
.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-info { border-left: 3px solid var(--accent); }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(120%); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateX(120%); }
}

/* ---------- 数字滚动效果 ---------- */
.count-up { display: inline-block; }

/* ---------- 文件项 ---------- */
.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(15, 20, 36, 0.4);
  transition: all var(--dur) var(--ease);
}
.file-item:hover {
  border-color: var(--border-hover);
  background: rgba(56, 189, 248, 0.04);
  transform: translateX(4px);
}
.file-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ---------- Hero 区 ---------- */
.hero {
  text-align: center;
  padding: var(--space-12) 0;
  position: relative;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
}
.hero-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 36rem;
  margin: 0 auto;
  line-height: 1.7;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: var(--space-6);
}

/* ---------- 取件码输入（6 独立输入框） ---------- */
.pickup-stage {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  position: relative;
}

.pickup-card {
  width: 100%;
  max-width: 520px;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* ---------- 悬浮文件格式卡片（背景装饰） ---------- */
.floating-files {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.float-file {
  position: absolute;
  left: var(--x, 50%);
  top: var(--y, 50%);
  transform: translate(-50%, -50%) scale(var(--s, 1)) rotate(var(--r, 0deg));
  width: 64px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  opacity: 0.55;
  animation: float-drift 7s ease-in-out infinite;
  animation-delay: var(--d, 0s);
  will-change: transform, opacity;
}
.float-file span {
  position: relative;
  z-index: 1;
}
.float-file::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 30%;
  background: currentColor;
  opacity: 0.14;
  border-radius: 12px 12px 0 0;
}
.float-file::after {
  content: '';
  position: absolute;
  top: 8px; right: 8px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.3;
}

/* 漂浮动画：上下浮动 + 旋转摆动 + 透明度脉动 */
@keyframes float-drift {
  0%, 100% {
    transform: translate(-50%, -50%) scale(var(--s, 1)) rotate(var(--r, 0deg));
    opacity: 0.4;
  }
  25% {
    transform: translate(-50%, calc(-50% - 14px)) scale(calc(var(--s, 1) * 1.04)) rotate(calc(var(--r, 0deg) + 4deg));
    opacity: 0.65;
  }
  50% {
    transform: translate(-50%, calc(-50% - 6px)) scale(var(--s, 1)) rotate(calc(var(--r, 0deg) - 2deg));
    opacity: 0.5;
  }
  75% {
    transform: translate(-50%, calc(-50% + 10px)) scale(calc(var(--s, 1) * 0.97)) rotate(calc(var(--r, 0deg) + 3deg));
    opacity: 0.6;
  }
}

/* 各文件类型配色 */
.float-file.file-zip  { color: #f59e0b; background: linear-gradient(135deg, rgba(28,21,8,0.85), rgba(42,31,10,0.85)); border-color: rgba(245,158,11,0.28); }
.float-file.file-iso  { color: #a78bfa; background: linear-gradient(135deg, rgba(23,18,42,0.85), rgba(31,23,53,0.85)); border-color: rgba(167,139,250,0.28); }
.float-file.file-txt  { color: #38bdf8; background: linear-gradient(135deg, rgba(8,26,37,0.85), rgba(12,36,52,0.85)); border-color: rgba(56,189,248,0.28); }
.float-file.file-png  { color: #10b981; background: linear-gradient(135deg, rgba(8,35,26,0.85), rgba(12,47,34,0.85)); border-color: rgba(16,185,129,0.28); }
.float-file.file-jpg  { color: #f43f5e; background: linear-gradient(135deg, rgba(36,17,26,0.85), rgba(47,21,34,0.85)); border-color: rgba(244,63,94,0.28); }
.float-file.file-exe  { color: #e2e8f0; background: linear-gradient(135deg, rgba(26,29,46,0.85), rgba(36,40,56,0.85)); border-color: rgba(226,232,240,0.22); }
.float-file.file-dmg  { color: #fb923c; background: linear-gradient(135deg, rgba(36,24,12,0.85), rgba(47,31,17,0.85)); border-color: rgba(251,146,60,0.28); }
.float-file.file-pdf  { color: #ef4444; background: linear-gradient(135deg, rgba(36,12,12,0.85), rgba(47,16,16,0.85)); border-color: rgba(239,68,68,0.28); }
.float-file.file-doc  { color: #2563eb; background: linear-gradient(135deg, rgba(12,18,40,0.85), rgba(16,24,52,0.85)); border-color: rgba(37,99,235,0.28); }
.float-file.file-xlsx { color: #16a34a; background: linear-gradient(135deg, rgba(10,28,18,0.85), rgba(14,36,22,0.85)); border-color: rgba(22,163,74,0.28); }
.float-file.file-mp4  { color: #8b5cf6; background: linear-gradient(135deg, rgba(24,18,44,0.85), rgba(32,22,56,0.85)); border-color: rgba(139,92,246,0.28); }
.float-file.file-json { color: #eab308; background: linear-gradient(135deg, rgba(34,28,8,0.85), rgba(44,36,10,0.85)); border-color: rgba(234,179,8,0.28); }
.float-file.file-psd  { color: #06b6d4; background: linear-gradient(135deg, rgba(8,26,34,0.85), rgba(10,34,44,0.85)); border-color: rgba(6,182,212,0.28); }
.float-file.file-svg  { color: #f97316; background: linear-gradient(135deg, rgba(34,18,8,0.85), rgba(44,24,10,0.85)); border-color: rgba(249,115,22,0.28); }
.float-file.file-rar  { color: #7c3aed; background: linear-gradient(135deg, rgba(20,14,40,0.85), rgba(26,18,52,0.85)); border-color: rgba(124,58,237,0.28); }
.float-file.file-apk  { color: #059669; background: linear-gradient(135deg, rgba(8,30,22,0.85), rgba(10,38,28,0.85)); border-color: rgba(5,150,105,0.28); }
.float-file.file-sql  { color: #4f46e5; background: linear-gradient(135deg, rgba(18,18,44,0.85), rgba(24,24,56,0.85)); border-color: rgba(79,70,229,0.28); }
.float-file.file-html { color: #e34c26; background: linear-gradient(135deg, rgba(36,16,10,0.85), rgba(47,22,14,0.85)); border-color: rgba(227,76,38,0.28); }
.float-file.file-css  { color: #1572b6; background: linear-gradient(135deg, rgba(10,20,36,0.85), rgba(14,28,46,0.85)); border-color: rgba(21,114,182,0.28); }
.float-file.file-js   { color: #f7df1e; background: linear-gradient(135deg, rgba(36,32,8,0.85), rgba(44,40,10,0.85)); border-color: rgba(247,223,30,0.28); }
.float-file.file-py   { color: #ffd43b; background: linear-gradient(135deg, rgba(36,28,8,0.85), rgba(48,40,10,0.85)); border-color: rgba(255,212,59,0.28); }
.float-file.file-xml  { color: #60a5fa; background: linear-gradient(135deg, rgba(10,18,40,0.85), rgba(14,24,52,0.85)); border-color: rgba(96,165,250,0.28); }
.float-file.file-csv  { color: #4ade80; background: linear-gradient(135deg, rgba(10,28,18,0.85), rgba(14,36,22,0.85)); border-color: rgba(74,222,128,0.28); }
.float-file.file-md   { color: #d4a05a; background: linear-gradient(135deg, rgba(32,24,12,0.85), rgba(42,32,16,0.85)); border-color: rgba(212,160,90,0.28); }
.float-file.file-yaml { color: #f87171; background: linear-gradient(135deg, rgba(36,12,12,0.85), rgba(47,16,16,0.85)); border-color: rgba(248,113,113,0.28); }
.float-file.file-go   { color: #00add8; background: linear-gradient(135deg, rgba(8,24,36,0.85), rgba(10,32,46,0.85)); border-color: rgba(0,173,216,0.28); }
.float-file.file-java { color: #f89820; background: linear-gradient(135deg, rgba(36,22,8,0.85), rgba(47,28,10,0.85)); border-color: rgba(248,152,32,0.28); }
.float-file.file-c    { color: #a8b9cc; background: linear-gradient(135deg, rgba(24,28,38,0.85), rgba(32,36,48,0.85)); border-color: rgba(168,185,204,0.22); }
.float-file.file-cpp  { color: #60a5fa; background: linear-gradient(135deg, rgba(10,18,40,0.85), rgba(14,24,52,0.85)); border-color: rgba(96,165,250,0.28); }
.float-file.file-tar  { color: #d97706; background: linear-gradient(135deg, rgba(32,20,8,0.85), rgba(42,28,10,0.85)); border-color: rgba(217,119,6,0.28); }
.float-file.file-gz   { color: #94a3b8; background: linear-gradient(135deg, rgba(22,28,38,0.85), rgba(30,36,48,0.85)); border-color: rgba(148,163,184,0.22); }
.float-file.file-7z   { color: #e879f9; background: linear-gradient(135deg, rgba(32,16,40,0.85), rgba(42,22,52,0.85)); border-color: rgba(232,121,249,0.28); }
.float-file.file-wav  { color: #22d3ee; background: linear-gradient(135deg, rgba(8,28,36,0.85), rgba(10,36,46,0.85)); border-color: rgba(34,211,238,0.28); }

/* 确保取件卡片在悬浮卡片之上 */
.pickup-card { position: relative; z-index: 2; }

/* 响应式：小屏隐藏部分卡片，缩小剩余卡片 */
@media (max-width: 768px) {
  .float-file { width: 50px; height: 64px; font-size: 0.6875rem; opacity: 0.4; }
  .float-file.file-pdf, .float-file.file-doc, .float-file.file-xlsx,
  .float-file.file-mp4, .float-file.file-psd, .float-file.file-rar,
  .float-file.file-apk, .float-file.file-sql, .float-file.file-xml,
  .float-file.file-csv, .float-file.file-md, .float-file.file-yaml,
  .float-file.file-go, .float-file.file-java, .float-file.file-c,
  .float-file.file-cpp, .float-file.file-tar, .float-file.file-gz,
  .float-file.file-7z, .float-file.file-wav { display: none; }
}
@media (max-width: 480px) {
  .float-file { width: 42px; height: 54px; font-size: 0.625rem; }
  .float-file.file-txt, .float-file.file-jpg, .float-file.file-json,
  .float-file.file-svg, .float-file.file-html, .float-file.file-css,
  .float-file.file-js, .float-file.file-py { display: none; }
}

.pickup-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-3);
}
.pickup-subtitle {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

/* 6 格输入框组 */
.code-boxes {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  margin-top: var(--space-8);
}
.code-box {
  width: 56px;
  height: 68px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  background: var(--bg-glass);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius);
  outline: none;
  transition: all 0.2s var(--ease);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  caret-color: var(--accent);
}
.code-box:hover:not(:disabled) {
  border-color: rgba(56, 189, 248, 0.3);
}
.code-box:focus {
  border-color: var(--accent);
  background: rgba(56, 189, 248, 0.08);
  box-shadow: 0 0 0 4px var(--accent-glow), 0 0 24px rgba(56, 189, 248, 0.2);
  transform: translateY(-2px);
}
.code-box.filled {
  border-color: rgba(56, 189, 248, 0.4);
  background: rgba(56, 189, 248, 0.06);
}
.code-box:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* 输入框抖动（错误） */
.code-boxes.shake {
  animation: shake-x 0.5s var(--ease);
}
@keyframes shake-x {
  0%, 100% { transform: translateX(0); }
  15% { transform: translateX(-10px); }
  30% { transform: translateX(10px); }
  45% { transform: translateX(-8px); }
  60% { transform: translateX(8px); }
  75% { transform: translateX(-4px); }
  90% { transform: translateX(4px); }
}
.code-boxes.shake .code-box {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-bg);
}

/* 成功脉冲 */
.code-boxes.success .code-box {
  border-color: var(--success);
  background: var(--success-bg);
  animation: success-pulse 0.6s var(--ease);
}
@keyframes success-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); box-shadow: 0 0 24px rgba(16,185,129,0.4); }
  100% { transform: scale(1); }
}

/* 提取按钮 */
.pickup-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 2rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  color: #04131f;
  border: none;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  box-shadow: 0 4px 20px var(--accent-glow);
  position: relative;
  overflow: hidden;
  min-width: 160px;
}
.pickup-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--accent-glow);
  filter: brightness(1.08);
}
.pickup-submit:active:not(:disabled) { transform: translateY(0); }
.pickup-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.pickup-submit::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.3) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease);
}
.pickup-submit:hover:not(:disabled)::after { transform: translateX(100%); }

/* 错误提示 */
.pickup-error {
  margin-top: var(--space-4);
  min-height: 24px;
  font-size: 0.8125rem;
  color: var(--danger);
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.3s var(--ease);
}
.pickup-error.show {
  opacity: 1;
  transform: translateY(0);
}

/* 底部提示 */
.pickup-hint {
  margin-top: var(--space-10);
  font-size: 0.75rem;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.pickup-hint a {
  color: var(--text-muted);
  transition: color var(--dur) var(--ease);
}
.pickup-hint a:hover { color: var(--accent); }

/* 加载遮罩 */
.pickup-loading {
  position: fixed;
  inset: 0;
  background: rgba(7, 11, 22, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-4);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}
.pickup-loading.show {
  opacity: 1;
  pointer-events: auto;
}
.pickup-loading .spinner {
  width: 40px;
  height: 40px;
  border-width: 3px;
}
.pickup-loading-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

/* 响应式 */
@media (max-width: 640px) {
  .code-box {
    width: 42px;
    height: 54px;
    font-size: 1.375rem;
  }
  .code-boxes { gap: var(--space-2); }
}
@media (max-width: 380px) {
  .code-box {
    width: 36px;
    height: 48px;
    font-size: 1.125rem;
  }
  .code-boxes { gap: 6px; }
}

/* ---------- 危险区 ---------- */
.danger-zone {
  border-color: rgba(244, 63, 94, 0.3);
}
.danger-zone-title {
  color: var(--danger);
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

/* ---------- 分割线 ---------- */
.divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-6) 0;
}

/* ---------- 区块标题 ---------- */
.section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ---------- 响应式微调 ---------- */
@media (max-width: 640px) {
  .hero { padding: var(--space-8) 0; }
  .code-input { font-size: 1.5rem; letter-spacing: 0.3em; }
  .navbar-inner { padding: 0 var(--space-4); }
  .admin-main { padding: var(--space-3); }
}

/* ---------- 登录页：左右分栏 ---------- */
/* 覆盖 pickup-stage 的居中，让分栏全屏 */
.pickup-stage:has(.login-split) {
  display: block;
  padding: 0;
}

.login-split {
  display: flex;
  width: 100%;
  min-height: 100vh;
  position: relative;
  z-index: 2;
}

/* 左侧品牌区（透明，文件卡片透过可见） */
.login-brand {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  position: relative;
}
.login-brand-inner {
  text-align: center;
  max-width: 420px;
}
.login-brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: var(--accent-gradient);
  color: #04131f;
  box-shadow: 0 8px 32px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.3);
  margin-bottom: var(--space-5);
  animation: logo-float 4s ease-in-out infinite;
}
.login-brand-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-3);
}
.login-brand-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}
.login-brand-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

/* 右侧登录表单区 */
.login-panel {
  flex: 0 0 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-10) var(--space-8);
  background: rgba(7, 11, 22, 0.06);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  
}
.login-form-wrap {
  width: 100%;
  max-width: 360px;
}
.login-form-header {
  margin-bottom: var(--space-8);
}
.login-form-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}
.login-form-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.login-field {
  display: flex;
  flex-direction: column;
}

/* 验证码行 */
.login-captcha-row {
  display: flex;
  gap: var(--space-3);
}
.captcha-btn {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  cursor: pointer;
  flex-shrink: 0;
  width: 130px;
  height: 44px;
  transition: border-color var(--dur) var(--ease);
}
.captcha-btn:hover { border-color: var(--border-hover); }
.captcha-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
  /* 深色化：白底黑字 → 深底白字 */
  filter: invert(1) hue-rotate(180deg) brightness(0.85) contrast(1.1);
}
.captcha-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* 登录提交按钮 */
.login-submit {
  margin-top: var(--space-2);
}

/* 底部提示 */
.login-hint {
  margin-top: var(--space-6);
  font-size: 0.75rem;
  color: var(--text-faint);
  text-align: center;
  line-height: 1.6;
}
.login-hint code {
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* 响应式 */
@media (max-width: 900px) {
  .login-split { flex-direction: column; }
  .login-brand {
    min-height: 200px;
    padding: var(--space-8) var(--space-6);
  }
  .login-brand-inner { max-width: 600px; }
  .login-panel {
    flex: 1;
    border-left: none;
    border-top: 1px solid var(--border);
    padding: var(--space-8) var(--space-6);
  }
}
@media (max-width: 480px) {
  .login-brand { padding: var(--space-6) var(--space-4); min-height: 160px; }
  .login-panel { padding: var(--space-6) var(--space-4); }
  .login-brand-title { font-size: 1.5rem; }
  .login-brand-desc { font-size: 0.875rem; }
}

/* ---------- Modal 通用样式 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.modal-open {
  pointer-events: auto;
  opacity: 1;
}
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(3, 6, 14, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.modal-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  margin: var(--space-4);
  background: linear-gradient(180deg, rgba(18,24,44,0.96), rgba(13,17,32,0.98));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(56,189,248,0.04);
  transform: translateY(16px) scale(0.98);
  opacity: 0;
  transition: all var(--dur) cubic-bezier(0.22, 1, 0.36, 1);
}
.modal-open .modal-card {
  transform: translateY(0) scale(1);
  opacity: 1;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}
.modal-title {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}
.modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.modal-close:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
  border-color: var(--border);
}
.modal-body {
  padding: var(--space-5);
}
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--border);
  background: rgba(15,20,36,0.4);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

@media (max-width: 480px) {
  .modal-card { margin: var(--space-3); border-radius: var(--radius); }
  .modal-header { padding: var(--space-3) var(--space-4); }
  .modal-body { padding: var(--space-4); }
  .modal-footer { padding: var(--space-3) var(--space-4); }
}