/* ============================================================
 * 个人网盘 - 微软 Fluent 设计系统 (模板用 fluent- 前缀)
 * 参考: Microsoft Fluent 2 / Windows 11 视觉语言
 * ============================================================ */

:root {
  --color-bg: #F5F6F7;
  --color-bg-elevated: #FFFFFF;
  --color-surface: #FAFAFA;
  --color-surface-hover: #F0F2F4;
  --color-fg: #1A1A1A;
  --color-fg-secondary: #5A5A5A;
  --color-fg-tertiary: #8A8A8A;
  --color-fg-disabled: #B0B0B0;
  --color-border: #E6E8EB;
  --color-border-strong: #D1D4D9;
  --color-divider: #EDEEEF;
  --color-primary: #0078D4;
  --color-primary-hover: #106EBE;
  --color-primary-active: #005A9E;
  --color-primary-fg: #FFFFFF;
  --color-primary-soft: #EFF6FC;
  --color-success: #107C10;
  --color-success-soft: #DFF6DD;
  --color-warning: #ED8936;
  --color-warning-soft: #FFF4CE;
  --color-danger: #C50F1F;
  --color-danger-soft: #FDE7E9;
  --color-info: #0078D4;
  --color-info-soft: #EFF6FC;
  --color-level-normal: #6B6B6B;
  --color-level-vip: #FFB900;
  --color-level-svip: #8764B8;
  --color-level-admin: #C50F1F;
  --font-sans: "Segoe UI", -apple-system, BlinkMacSystemFont, "Microsoft YaHei",
    "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif,
    "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: "Cascadia Code", "JetBrains Mono", Consolas, "SF Mono", monospace;
  --radius-xs: 2px; --radius-sm: 4px; --radius-md: 6px;
  --radius-lg: 8px; --radius-xl: 12px; --radius-full: 9999px;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.06), 0 0 1px rgba(0,0,0,0.04);
  --shadow-sm: 0 1.6px 3.6px rgba(0,0,0,0.08), 0 0.3px 0.9px rgba(0,0,0,0.05);
  --shadow-md: 0 3.2px 7.2px rgba(0,0,0,0.10), 0 0.6px 1.8px rgba(0,0,0,0.06);
  --shadow-lg: 0 6.4px 14.4px rgba(0,0,0,0.12), 0 1.2px 3.6px rgba(0,0,0,0.08);
  --shadow-xl: 0 12px 28px rgba(0,0,0,0.14), 0 4px 8px rgba(0,0,0,0.08);
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: var(--font-sans);
  font-size: 14px; line-height: 1.5;
  color: var(--color-fg); background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 9px 宽滚动条 (用户偏好) */
* { scrollbar-width: thin; scrollbar-color: #C1C5CB transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: #C1C5CB; border-radius: var(--radius-full);
  border: 2px solid transparent; background-clip: content-box;
}
*::-webkit-scrollbar-thumb:hover { background: #A8ADB5; background-clip: content-box; }

/* ============================================================
 *  fluent-btn 按钮
 * ============================================================ */
.fluent-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; height: 36px; padding: 0 14px;
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600;
  font-family: inherit;
  border: 1px solid transparent;
  cursor: pointer; transition: all var(--duration-fast) var(--ease-standard);
  white-space: nowrap; user-select: none; line-height: 1;
}
.fluent-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.fluent-btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-fg);
  box-shadow: var(--shadow-xs);
}
.fluent-btn-primary:hover:not(:disabled) { background: var(--color-primary-hover); }
.fluent-btn-primary:active:not(:disabled) { background: var(--color-primary-active); }

.fluent-btn-secondary {
  background: #ffffff;
  color: var(--color-fg);
  border-color: var(--color-border-strong);
}
.fluent-btn-secondary:hover:not(:disabled) {
  background: var(--color-surface-hover);
  border-color: var(--color-fg-tertiary);
}

.fluent-btn-ghost {
  background: transparent;
  color: var(--color-fg-secondary);
  padding: 0 10px;
}
.fluent-btn-ghost:hover:not(:disabled) {
  background: var(--color-surface-hover);
  color: var(--color-fg);
}

.fluent-btn-danger {
  background: #ffffff;
  color: var(--color-danger);
  border-color: var(--color-danger-soft);
}
.fluent-btn-danger:hover:not(:disabled) { background: var(--color-danger-soft); }

/* fluent-badge 徽章 */
.fluent-badge {
  display: inline-flex; align-items: center; gap: 4px;
  height: 20px; padding: 0 8px;
  border-radius: var(--radius-full);
  font-size: 11px; font-weight: 600;
  background: var(--color-surface); color: var(--color-fg-secondary);
  line-height: 1;
}
.fluent-badge-vip    { background: #FFF8E6; color: #8A6100; }
.fluent-badge-svip   { background: #F2EBFB; color: #5C2DAB; }
.fluent-badge-admin  { background: var(--color-danger-soft); color: var(--color-danger); }
.fluent-badge-normal { background: var(--color-surface); color: var(--color-fg-secondary); }

/* fluent-input 输入框 */
.fluent-input {
  width: 100%; min-height: 36px; height: 36px;
  padding: 0 10px;
  background: #ffffff;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px; font-family: inherit; color: var(--color-fg);
  transition: all var(--duration-fast) var(--ease-standard);
  outline: none; box-sizing: border-box;
}
.fluent-input::placeholder { color: var(--color-fg-tertiary); }
.fluent-input:hover:not(:disabled) { border-color: var(--color-fg-tertiary); }
.fluent-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
  outline: none;
}
.fluent-input:disabled { background: var(--color-surface); color: var(--color-fg-disabled); cursor: not-allowed; }
textarea.fluent-input { height: auto; padding: 8px 10px; line-height: 1.5; }
select.fluent-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A8A8A' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
  padding-right: 30px;
}

/* fluent-check 复选框 */
.fluent-check {
  width: 16px; height: 16px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xs);
  background: #fff;
  cursor: pointer; appearance: none;
  flex-shrink: 0; position: relative;
  transition: all var(--duration-fast) var(--ease-standard);
  vertical-align: middle;
}
.fluent-check:hover { border-color: var(--color-primary); }
.fluent-check:checked {
  background: var(--color-primary); border-color: var(--color-primary);
}
.fluent-check:checked::after {
  content: ""; position: absolute;
  left: 4px; top: 0.5px;
  width: 5px; height: 10px;
  border: solid #fff; border-width: 0 1.8px 1.8px 0;
  transform: rotate(45deg);
}

/* fluent-switch 开关 */
.fluent-switch {
  position: relative; display: inline-block;
  width: 40px; height: 20px; cursor: pointer;
}
.fluent-switch input { display: none; }
.fluent-switch span {
  position: absolute; inset: 0;
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  transition: background var(--duration-fast) var(--ease-standard);
}
.fluent-switch span::before {
  content: ""; position: absolute;
  width: 12px; height: 12px; left: 4px; top: 4px;
  background: #fff; border-radius: 50%;
  box-shadow: var(--shadow-xs);
  transition: transform var(--duration-fast) var(--ease-standard);
}
.fluent-switch input:checked + span { background: var(--color-primary); }
.fluent-switch input:checked + span::before { transform: translateX(20px); }
.fluent-switch input:disabled + span { opacity: 0.5; cursor: not-allowed; }

/* fluent-card 卡片 */
.fluent-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}

/* fluent-dialog 弹窗 */
.fluent-dialog {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.40);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; padding: 16px;
  animation: fadeIn var(--duration-fast) var(--ease-standard);
}
.fluent-dialog-panel {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%; max-width: 480px;
  max-height: 92vh; overflow: hidden;
  display: flex; flex-direction: column;
  animation: slideUp var(--duration-normal) cubic-bezier(0.1,0.9,0.2,1);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
/* x-cloak */
[x-cloak] { display: none !important; }

/* focus-visible 无障碍 */
:focus-visible {
  outline: 2px solid var(--color-primary); outline-offset: 2px;
}

@media (max-width: 768px) { body { font-size: 13px; } }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}