/* ==========================================================================
   prioss Design System v2（企业级扁平风格）
   --------------------------------------------------------------------------
   v2 定位：去“AI 模板味”——
   - 去掉紫罗兰渐变 / 玻璃拟态 / 大圆角 / 彩虹图标 / Inter 字体
   - 单一品牌蓝（Windows Fluent 蓝 #0067C9）+ 中性灰体系
   - 元件：扁平表面 + 1px 描边 + 轻阴影，6-8px 圆角，系统字体栈
   ========================================================================== */

:root {
    --pri-bg: #f4f5f7;
    --pri-bg-dark: #141519;
    --pri-surface: #ffffff;
    --pri-surface-soft: #f6f7f9;
    --pri-surface-dark: #1c1e22;
    --pri-surface-dark-soft: #232529;
    --pri-border: #e2e5ea;
    --pri-border-dark: #34373d;
    --pri-text: #1b1f26;
    --pri-text-muted: #6b7280;
    --pri-text-dark: #e7e9ec;
    --pri-text-muted-dark: #9aa0a8;

    --pri-accent: #0067c9;
    --pri-accent-hover: #0057a8;
    --pri-accent-soft: rgba(0, 103, 201, 0.08);
    --pri-accent-text: #005fb8;
    --pri-accent-text-dark: #66c2ff;

    --pri-danger: #dc2626;
    --pri-success: #16a34a;
    --pri-warning: #d97706;

    --pri-radius: 6px;
    --pri-radius-lg: 8px;
    --pri-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
    --pri-shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);

    --pri-font: "Segoe UI", "Segoe UI Variable Display", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, system-ui, sans-serif;
    --pri-font-mono: "Cascadia Code", Consolas, "SFMono-Regular", Menlo, monospace;
}

.dark {
    --pri-surface: #1c1e22;
    --pri-surface-soft: #232529;
    --pri-border: #34373d;
    --pri-text: #e7e9ec;
    --pri-text-muted: #9aa0a8;
}

/* ------------------------------ 基础 ------------------------------ */

html, body { height: 100%; }

body {
    font-family: var(--pri-font);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    color: var(--pri-text);
}

/* 应用外壳：纯色背景（无渐变光斑） */
.app-shell {
    background: var(--pri-bg);
}
.dark .app-shell {
    background: var(--pri-bg-dark);
}

/* ------------------------------ 滚动条 ------------------------------ */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background-clip: padding-box;
    border: 3px solid transparent;
    background-color: rgba(100, 110, 125, 0.35);
    border-radius: 9999px;
}
.dark ::-webkit-scrollbar-thumb { background-color: rgba(160, 170, 185, 0.30); }
::-webkit-scrollbar-thumb:hover { background-color: rgba(90, 100, 115, 0.55); }
.dark ::-webkit-scrollbar-thumb:hover { background-color: rgba(160, 170, 185, 0.5); }

.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* ------------------------------ 面板表面（扁平） ------------------------------ */

.mica-surface,
.glass-effect {
    background-color: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--pri-border);
    box-shadow: var(--pri-shadow);
}
.dark .mica-surface,
.dark .glass-effect {
    background-color: rgba(28, 30, 34, 0.98);
    border-color: var(--pri-border-dark);
}

/* ------------------------------ 按钮 ------------------------------ */

.fluent-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.9rem;
    border-radius: var(--pri-radius);
    border: 1px solid transparent;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25rem;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    user-select: none;
}
.fluent-btn:active { transform: translateY(0.5px); }
.fluent-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(0, 103, 201, 0.30); }

.fluent-btn-primary {
    background: var(--pri-accent);
    color: #fff;
}
.fluent-btn-primary:hover { background: var(--pri-accent-hover); }

.fluent-btn-outline {
    background: var(--pri-surface);
    border-color: var(--pri-border);
    color: var(--pri-text);
}
.fluent-btn-outline:hover { background: var(--pri-surface-soft); }

/* 圆形图标按钮（文件操作行）：中性灰为主，仅危险操作为红色 */
.icon-btn {
    width: 2rem;
    height: 2rem;
    border-radius: 0.4rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease, color 0.15s ease;
    border: none;
    background: transparent;
    cursor: pointer;
    color: #5f6672;
}
.icon-btn:hover { background: rgba(75, 85, 99, 0.10); color: #1b1f26; }
.dark .icon-btn { color: #9aa0a8; }
.dark .icon-btn:hover { background: rgba(150, 160, 175, 0.14); color: #e7e9ec; }

/* 语义色仅在业务含义需要时使用（主操作统一品牌蓝） */
.icon-btn-indigo, .icon-btn-purple, .icon-btn-blue { color: var(--pri-accent-text); }
.icon-btn-indigo:hover, .icon-btn-purple:hover, .icon-btn-blue:hover { background: var(--pri-accent-soft); }
.icon-btn-emerald { color: var(--pri-success); }
.icon-btn-emerald:hover { background: rgba(22, 163, 74, 0.10); }
.icon-btn-red { color: var(--pri-danger); }
.icon-btn-red:hover { background: rgba(220, 38, 38, 0.10); }
.dark .icon-btn-indigo, .dark .icon-btn-purple, .dark .icon-btn-blue { color: var(--pri-accent-text-dark); }
.dark .icon-btn-emerald { color: #4ade80; }

/* ------------------------------ 输入 ------------------------------ */

.fluent-input {
    width: 100%;
    background: var(--pri-surface);
    border: 1px solid var(--pri-border);
    border-radius: var(--pri-radius);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--pri-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.fluent-input:focus {
    outline: none;
    border-color: var(--pri-accent);
    box-shadow: 0 0 0 3px rgba(0, 103, 201, 0.18);
}

/* ------------------------------ 复选框 ------------------------------ */

.checkbox-fluent {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 1px solid #c6ccd4;
    border-radius: 3px;
    background: #fff;
    cursor: pointer;
    position: relative;
    transition: all 0.1s ease;
    vertical-align: middle;
}
.dark .checkbox-fluent {
    background: #232529;
    border-color: #4a5057;
}
.checkbox-fluent:hover { border-color: var(--pri-accent); }
.checkbox-fluent:checked {
    background: var(--pri-accent);
    border-color: var(--pri-accent);
}
.checkbox-fluent:checked::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 5px;
    height: 9px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.checkbox-fluent:disabled { opacity: 0.5; cursor: not-allowed; }

/* ------------------------------ 表格行 / 选中态 ------------------------------ */

.table-row-hover { transition: background 0.15s ease; }
.table-row-hover:hover { background: var(--pri-surface-soft); }

.batch-selected {
    border-color: var(--pri-accent) !important;
    box-shadow: 0 0 0 1px rgba(0, 103, 201, 0.35) inset;
    background: rgba(0, 103, 201, 0.04);
}
.dark .batch-selected { background: rgba(0, 103, 201, 0.10); }
tr.batch-selected > td { background: rgba(0, 103, 201, 0.04); }
tr.batch-selected > td:first-child { box-shadow: inset 3px 0 0 var(--pri-accent); }
.batch-selected .item-checkbox,
.batch-selected .select-checkbox-wrap { opacity: 1 !important; }

/* 拖拽框选矩形 */
.selection-box {
    position: absolute;
    border: 1.5px solid rgba(0, 103, 201, 0.85);
    background: rgba(0, 103, 201, 0.10);
    pointer-events: none;
    z-index: 40;
    border-radius: 4px;
}

/* ------------------------------ 加载 / Toast ------------------------------ */

#loadingOverlay { backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); }

.toast { animation: priSlideIn 0.3s cubic-bezier(0.1, 0.9, 0.2, 1) forwards; }
@keyframes priSlideIn {
    from { transform: translateX(24px); opacity: 0; }
    to   { transform: translateX(0);    opacity: 1; }
}

/* ------------------------------ 实用修饰 ------------------------------ */

.mask-linear-fade {
    mask-image: linear-gradient(to right, black 90%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black 90%, transparent 100%);
}

/* 移动端文件列表：名称列占满剩余空间，长文件名优雅截断 */
@media (max-width: 767px) {
    #fileGrid td, #fileGrid thead th { padding-left: 0.75rem; padding-right: 0.75rem; }
    #fileGrid td:nth-child(2) .truncate { max-width: calc(100vw - 150px); }
}

/* ------------------------------ 登录页卡片 ------------------------------ */

.mica-card,
.auth-mica-card {
    background-color: var(--pri-surface);
    border: 1px solid var(--pri-border);
    box-shadow: var(--pri-shadow);
    border-radius: 10px;
}
.dark .mica-card,
.dark .auth-mica-card {
    background-color: var(--pri-surface-dark);
    border-color: var(--pri-border-dark);
}

/* ------------------------------ 分享页 ------------------------------ */

.share-page {
    background: var(--pri-bg);
}
.dark .share-page {
    background: var(--pri-bg-dark);
}
.share-card {
    background-color: var(--pri-surface);
    border: 1px solid var(--pri-border);
    box-shadow: var(--pri-shadow);
    border-radius: 10px;
}
.dark .share-card {
    background-color: var(--pri-surface-dark);
    border-color: var(--pri-border-dark);
}

/* ------------------------------ 打印 / 减少动效 ------------------------------ */

@media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}