/* ============================================================
   订单管理系统 · 出货台 / Dispatch —— 前端设计系统 v2
   ------------------------------------------------------------
   重构要点：
   · 移动优先（mobile-first）：默认样式面向手机，min-width 断点向上增强
   · 全本地化：系统字体栈 + 内联 SVG 图标，零外部网络请求（去掉了
     Google Fonts @import 与 Font Awesome CDN，国内首屏不再被墙/白屏）
   · 分层组织：Tokens → Base → Layout → Components → Pages → Motion
   · 视觉延续：石墨指挥条 + 出货橙 + 分阶段流水线
   ============================================================ */

/* ============================ 1. Tokens ============================ */
:root {
    /* 结构色 */
    --ink: #16181d;            /* 石墨近黑：指挥条 / 标题 */
    --ink-2: #2b2f38;
    --paper: #f4f5f7;          /* 页面背景 */
    --card: #ffffff;
    --line: #e2e5ea;           /* 发丝描边 */
    --line-strong: #c7ccd5;
    --muted: #6b7280;
    --text: #17181c;
    --text-soft: #3f434c;

    /* 品牌 / 主操作 */
    --accent: #ea580c;         /* 出货橙 */
    --accent-700: #c2410c;
    --accent-050: #fff3ec;
    --accent-ring: rgba(234, 88, 12, .16);

    /* 阶段语义色 */
    --stage-ongoing: #d97706;  /* 进行中 · 琥珀 */
    --stage-packed:  #4f46e5;  /* 已打包 · 靛蓝 */
    --stage-shipped: #059669;  /* 已发货 · 翠绿 */

    /* 功能色 */
    --success: #059669;
    --warning: #b45309;
    --danger:  #dc2626;
    --danger-700: #b91c1c;
    --info:    #4f46e5;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(16,18,29,.06), 0 1px 3px rgba(16,18,29,.05);
    --shadow-lg: 0 14px 30px -10px rgba(16,18,29,.20), 0 6px 12px -6px rgba(16,18,29,.12);

    /* 圆角 */
    --radius: 12px;
    --radius-sm: 8px;

    /* 字体：纯系统栈，零下载。等宽用于日期/编号“戳印” */
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Code", "JetBrains Mono",
                 Consolas, "Courier New", monospace;

    /* 触控友好的最小点按尺寸（移动端） */
    --tap: 44px;

    /* 兼容旧引用（保留少量别名以防遗漏） */
    --primary-color: var(--accent);
    --danger-color: var(--danger);
}

/* ============================ 2. Base ============================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
    font-family: var(--font-body);
    background-color: var(--paper);
    background-image:
        linear-gradient(rgba(22,24,29,.022) 1px, transparent 1px),
        linear-gradient(90deg, rgba(22,24,29,.022) 1px, transparent 1px);
    background-size: 28px 28px;
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-wrap: break-word;
}

a { color: inherit; }
img { max-width: 100%; display: block; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* 内联 SVG 图标：随字号缩放、随文字颜色着色 */
.icon {
    width: 1.05em;
    height: 1.05em;
    flex-shrink: 0;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    vertical-align: -0.16em;
    pointer-events: none;
}

/* ============================ 3. Layout ============================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.main-content {
    flex: 1;
    padding: 1.5rem 0 2.5rem;
}

/* —— 导航：石墨指挥条 —— */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--ink);
    color: #fff;
    padding: 0.7rem 0;
    box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 6px 20px -12px rgba(0,0,0,.6);
    border-bottom: 1px solid #000;
    transition: transform .3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -.01em;
}

.logo a {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: #f7f7f8;
    text-decoration: none;
}

.logo a .icon {
    color: var(--accent);
    background: rgba(234,88,12,.14);
    border: 1px solid rgba(234,88,12,.35);
    width: 1.9rem;
    height: 1.9rem;
    padding: .38rem;
    border-radius: 7px;
    vertical-align: middle;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: rgba(255,255,255,.72);
    text-decoration: none;
    font-weight: 500;
    font-size: .9rem;
    padding: 0.5rem 0.7rem;
    border-radius: 7px;
    transition: color .2s, background-color .2s;
}
.nav-link:hover, .nav-link:active {
    color: #fff;
    background-color: rgba(255,255,255,.08);
}
/* 手机上导航文字收窄时，隐藏文案只留图标可选：此处保留文案但缩小 */
.nav-link .label { white-space: nowrap; }

/* —— 页脚 —— */
.footer {
    background-color: var(--ink);
    border-top: 1px solid #000;
    padding: 1.25rem 0;
    text-align: center;
    color: rgba(255,255,255,.55);
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

/* —— 页面标题 —— */
.page-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
    margin-bottom: 1.5rem;
}

.page-header h2 {
    position: relative;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--text);
    padding-bottom: .55rem;
}
.page-header h2::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 2.75rem; height: 4px;
    border-radius: 2px;
    background: var(--accent);
}

.header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    width: 100%;
}
/* 删除按钮外层 <form> 用 display:contents 消除盒子，令按钮与其它按钮同级同尺寸 */
.header-actions form { display: contents; }

/* ============================ 4. Components ============================ */

/* —— 按钮 —— */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: var(--tap);          /* 触控友好 */
    padding: 0.6rem 1.05rem;
    line-height: 1.4;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    box-shadow: 0 1px 1px rgba(16,18,29,.05);
    transition: transform .12s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease;
    -webkit-tap-highlight-color: transparent;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px -4px rgba(16,18,29,.28); }
.btn:active { transform: translateY(0); box-shadow: 0 1px 1px rgba(16,18,29,.06); }

.btn-primary   { background-color: var(--accent); color: #fff; }
.btn-primary:hover { background-color: var(--accent-700); }
.btn-secondary { background-color: #fff; color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { background-color: #f8fafc; border-color: var(--line-strong); }
.btn-success   { background-color: var(--success); color: #fff; }
.btn-success:hover { background-color: #047857; }
.btn-warning   { background-color: var(--warning); color: #fff; }
.btn-warning:hover { background-color: #92400e; }
.btn-danger    { background-color: var(--danger); color: #fff; }
.btn-danger:hover { background-color: var(--danger-700); }
.btn-info      { background-color: var(--info); color: #fff; }
.btn-info:hover { background-color: #4338ca; }

.btn-sm {
    min-height: 0;
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    border-radius: 6px;
}
.btn-block { width: 100%; padding: 0.8rem; font-size: 1rem; }

/* 移动端：页头动作按钮占满整行、便于点按 */
.header-actions .btn { flex: 1 1 100%; }

/* —— 徽章 —— */
.badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: 0.22rem 0.6rem;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: .03em;
    white-space: nowrap;
}
.badge::before {
    content: "";
    width: 6px; height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: .85;
}
.badge-success { background-color: #d1fae5; color: #065f46; }
.badge-warning { background-color: #fef3c7; color: #92400e; }
.badge-info    { background-color: #e0e7ff; color: #3730a3; }

/* —— 阶段切换标签（Tab）—— */
.stage-tabs {
    position: sticky;
    top: 0;
    z-index: 90;
    display: flex;
    gap: 0.35rem;
    margin: 0 -1rem 1.25rem;          /* 抵消 container 内边距，做成整条 */
    padding: 0.5rem 1rem;
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
    overflow-x: auto;                  /* 极窄屏可横向滑动，不换行 */
    scrollbar-width: none;
}
.stage-tabs::-webkit-scrollbar { display: none; }

.stage-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    flex: 1 1 0;
    min-width: max-content;
    justify-content: center;
    min-height: var(--tap);
    padding: 0.5rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: #fff;
    color: var(--muted);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: color .2s, background-color .2s, border-color .2s, box-shadow .2s;
    -webkit-tap-highlight-color: transparent;
}
.stage-tab .icon { color: currentColor; }
.stage-tab:hover { border-color: var(--line-strong); color: var(--text); }
.stage-tab.is-active {
    color: #fff;
    background: var(--ink);
    border-color: var(--ink);
    box-shadow: var(--shadow-sm);
}
.stage-tab.is-active .count-chip { color: #fff; background: rgba(255,255,255,.18); }
/* 激活标签的强调点：按阶段着色 */
.stage-tab[data-target="panel-ongoing"].is-active { background: var(--stage-ongoing); border-color: var(--stage-ongoing); }
.stage-tab[data-target="panel-packed"].is-active  { background: var(--stage-packed);  border-color: var(--stage-packed); }
.stage-tab[data-target="panel-shipped"].is-active { background: var(--stage-shipped); border-color: var(--stage-shipped); }

/* —— 阶段面板：一次只显示一个 —— */
.stage-panel[hidden] { display: none; }
.stage-panel { animation: docket-in .28s ease both; }

/* —— 分阶段分区（保留旧结构以兼容） —— */
.order-section { margin-bottom: 2.25rem; }
.order-section:last-child { margin-bottom: 0; }

.section-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.1rem;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -.01em;
    color: var(--text);
}
.section-title[data-stage]::before {
    content: attr(data-stage);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--muted);
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: .18rem .5rem;
    line-height: 1;
}
.section-title .icon { color: var(--accent); }
.order-section:nth-of-type(1) .section-title[data-stage]::before { color: var(--stage-ongoing); border-color: color-mix(in srgb, var(--stage-ongoing) 40%, var(--line)); }
.order-section:nth-of-type(2) .section-title[data-stage]::before { color: var(--stage-packed);  border-color: color-mix(in srgb, var(--stage-packed) 40%, var(--line)); }
.order-section:nth-of-type(3) .section-title[data-stage]::before { color: var(--stage-shipped); border-color: color-mix(in srgb, var(--stage-shipped) 40%, var(--line)); }

.count-chip {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--muted);
    background: rgba(22,24,29,.05);
    border-radius: 999px;
    padding: .1rem .55rem;
}

/* —— 卡片网格（移动端单列） —— */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;   /* 移动端卡片纵向间距，避免过于密集 */
}

/* —— 工单式卡片 —— */
.project-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background-color: var(--card);
    border: 1px solid var(--line);
    border-left: 4px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 1.3rem 1.4rem;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    animation: docket-in .42s cubic-bezier(.22,.61,.36,1) both;
}
.project-card.status-ongoing { border-left-color: var(--stage-ongoing); }
.project-card.status-packed  { border-left-color: var(--stage-packed); }
.project-card.status-shipped { border-left-color: var(--stage-shipped); background-color: #fbfcfd; }

/* 悬停仅在有指针精度的设备上抬起，触屏不误触 */
@media (hover: hover) {
    .project-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-lg);
        border-color: var(--line-strong);
        cursor: pointer;
    }
}

.project-card.status-shipped .project-header h3 {
    text-decoration: line-through;
    text-decoration-color: rgba(107,114,128,.5);
    color: var(--muted);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: .75rem;
    margin-bottom: 1.1rem;
}
.project-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -.01em;
    color: var(--text);
    word-break: break-word;
}

.project-info {
    display: flex;
    flex-direction: column;
    gap: .65rem;
    margin-bottom: 1.2rem;
}
.project-info p {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: var(--muted);
    font-size: 0.875rem;
}
.project-info p strong {
    color: var(--text-soft);
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
    display: inline-block;
    width: 5em;   /* 统一标签列宽（最长“文件数量：”＝4 全角字＋冒号），令各行内容左对齐成列 */
}
.project-info .icon { color: var(--muted); margin-top: .12em; }

.project-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
    padding-top: 1.05rem;
    border-top: 1px dashed var(--line);
}
.project-actions form { display: contents; }
/* 移动端：动作按钮两列排布（4 个按钮排成 2×2），文案不再被挤到溢出边框 */
.project-actions .btn { flex: 1 1 calc(50% - 0.25rem); min-width: 0; }

/* 交货日期戳印 */
.delivery-date-value { font-family: var(--font-mono); font-weight: 700; color: var(--text); }
.delivery-date-value.date-soon    { color: var(--stage-ongoing) !important; }
.delivery-date-value.date-overdue { color: var(--danger) !important; }

/* 唛头打印状态 */
.mark-status { font-weight: 700; }
.mark-status.is-printed   { color: var(--success); }
.mark-status.is-unprinted { color: var(--warning); }
/* 已打印时的切换按钮：绿色描边，一眼可辨 */
.mark-toggle[aria-pressed="true"] {
    background-color: #ecfdf5;
    border-color: var(--success);
    color: #065f46;
}
.mark-toggle[aria-pressed="true"]:hover { background-color: #d1fae5; }

/* —— 空状态 —— */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2.5rem 1.25rem;
    color: var(--muted);
    background: rgba(255,255,255,.55);
    border: 1px dashed var(--line);
    border-radius: var(--radius);
}
.empty-state .icon {
    width: 3rem; height: 3rem;
    stroke-width: 1.5;
    color: var(--line-strong);
    margin-bottom: 0.75rem;
}
.empty-state h3 { font-weight: 700; margin-bottom: 0.4rem; color: var(--text); }

/* —— 提示条 —— */
.alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    font-weight: 500;
}
.alert-success { background-color: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.alert-error   { background-color: #fef2f2; color: #991b1b; border-color: #fecaca; }
.close-btn {
    background: none; border: none; cursor: pointer;
    font-size: 1.35rem; line-height: 1; color: inherit; opacity: .6;
    transition: opacity .2s;
}
.close-btn:hover { opacity: 1; }

/* —— 搜索框 —— */
.search-container { margin-bottom: 1.25rem; max-width: 520px; }
.search-container form {
    display: flex;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: border-color .2s, box-shadow .2s;
}
.search-container form:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-ring);
}
.search-container input[type="text"] {
    flex: 1;
    min-width: 0;
    border: none;
    padding: 0.7rem 0.85rem;
    font-size: 1rem;                 /* ≥16px 防止 iOS 聚焦缩放 */
    font-family: inherit;
    background: transparent;
}
.search-container input[type="text"]:focus { outline: none; }
.search-container button {
    display: inline-flex;
    align-items: center;
    background-color: var(--accent);
    color: #fff;
    border: none;
    padding: 0 1.15rem;
    cursor: pointer;
    transition: background-color .2s;
}
.search-container button:hover { background-color: var(--accent-700); }

/* ============================ 5. Forms ============================ */
.form-container { max-width: 820px; margin: 0 auto; }

.project-form, .login-form-wrap {
    background-color: var(--card);
    padding: 1.35rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.form-group { margin-bottom: 1.35rem; }
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text);
}
.form-group label .icon { color: var(--accent); margin-right: 0.35rem; }
.required { color: var(--danger); }

.form-control {
    width: 100%;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: 1rem;                 /* ≥16px 防 iOS 缩放 */
    font-family: inherit;
    background: #fff;
    color: var(--text);
    transition: border-color .2s, box-shadow .2s;
}
.form-control::placeholder { color: #9aa1ac; }
.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-ring);
}
.form-control:disabled { background-color: #f1f3f6; color: var(--muted); cursor: not-allowed; }
textarea.form-control { resize: vertical; min-height: 5rem; }

input[type="date"].form-control { cursor: pointer; }
input[type="date"]::-webkit-calendar-picker-indicator { opacity: 1; cursor: pointer; }

.form-text { font-size: 0.85rem; color: var(--muted); margin-top: 0.35rem; }

.form-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.75rem;
}
.form-actions .btn { width: 100%; }

/* —— 文件上传 —— */
.file-upload-area { position: relative; }
.file-input {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    opacity: 0;
    cursor: pointer;
}
.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    border: 2px dashed var(--line);
    border-radius: var(--radius);
    background-color: #fafbfc;
    text-align: center;
    cursor: pointer;
    transition: border-color .2s, background-color .2s;
}
.file-label:hover, .file-label.drag-highlight {
    border-color: var(--accent);
    background-color: var(--accent-050);
}
.file-label .icon { width: 2.4rem; height: 2.4rem; stroke-width: 1.6; color: var(--accent); margin-bottom: 0.65rem; }
.file-label span { font-weight: 600; color: var(--text); margin-bottom: 0.35rem; }
.file-label small { color: var(--muted); font-size: 0.78rem; }

.file-list { margin-top: 1rem; }
.file-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.6rem 0.75rem;
    background-color: #fafbfc;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}
.file-item .icon { color: var(--muted); }
.file-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); white-space: nowrap; }
.file-remove-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem; height: 1.75rem;
    background: none; border: none;
    color: var(--danger);
    cursor: pointer;
    border-radius: 6px;
    transition: color .2s, background-color .2s;
}
.file-remove-btn:hover { color: #fff; background-color: var(--danger); }

/* 已上传文件列表（编辑页） */
.existing-files { display: flex; flex-direction: column; gap: 0.5rem; }
.existing-file-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.75rem;
    background-color: #fafbfc;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    flex-wrap: wrap;
}
.file-thumbnail { width: 48px; height: 48px; object-fit: cover; border-radius: 6px; }
.file-icon .icon, .file-icon { color: var(--muted); }
.file-icon.icon { width: 1.9rem; height: 1.9rem; }
.existing-file-item .file-name { flex: 1; min-width: 40%; }

/* ============================ 6. Detail page ============================ */
.detail-container { display: grid; gap: 1.25rem; }

.detail-card {
    background-color: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1.1rem 1.25rem;
    background: #fafbfc;
    border-bottom: 1px solid var(--line);
}
.detail-header h3 { font-size: 1.15rem; font-weight: 700; letter-spacing: -.01em; }
.detail-content { padding: 1.25rem; }

.info-row {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--line);
}
.info-row:last-child { border-bottom: none; }
.info-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--muted);
}
.info-label .icon { color: var(--accent); }
.info-value { color: var(--text); }

/* 详情文件网格（移动端两列） */
.files-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
}
.file-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
@media (hover: hover) {
    .file-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: var(--line-strong); }
}
.file-preview {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f6f7f9;
}
.image-preview img { width: 100%; height: 100%; object-fit: cover; cursor: pointer; }
.file-icon-preview .icon { width: 2.5rem; height: 2.5rem; stroke-width: 1.5; color: var(--muted); }
.file-info { padding: 0.85rem; }
.file-info .file-name { font-weight: 600; margin-bottom: 0.35rem; }
.file-info .file-date { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); margin-bottom: 0.6rem; }
.file-actions { display: flex; gap: 0.5rem; }

/* ============================ 7. Modal ============================ */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background-color: rgba(16,18,29,.92);
    backdrop-filter: blur(2px);
    cursor: pointer;
}
.modal.open { display: block; }
.modal-content {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    max-width: 92%; max-height: 88%;
    border-radius: 6px;
    box-shadow: 0 20px 60px rgba(0,0,0,.6);
    cursor: default;
}
.modal-close {
    position: absolute;
    top: 12px; right: 18px;
    color: #f1f1f1;
    font-size: 34px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}
.modal-close:hover { color: #bbb; }
#modalCaption {
    position: absolute;
    bottom: 18px; left: 50%;
    transform: translateX(-50%);
    width: 90%;
    text-align: center;
    color: #ccc;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

/* ============================ 8. Login ============================ */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 1.25rem;
    background-color: var(--ink);
    background-image:
        radial-gradient(1200px 600px at 50% -10%, rgba(234,88,12,.16), transparent 60%),
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
    background-size: auto, 32px 32px, 32px 32px;
}
.login-container { width: 100%; max-width: 380px; }
.login-card {
    position: relative;
    background-color: var(--card);
    padding: 2.25rem 1.75rem;
    border-radius: 16px;
    box-shadow: 0 30px 60px -20px rgba(0,0,0,.6);
    overflow: hidden;
}
.login-card::before {
    content: "";
    position: absolute; top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--accent);
}
.login-card h1 {
    text-align: center;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--ink);
    margin-bottom: 1.5rem;
}
.login-form { display: flex; flex-direction: column; gap: 1rem; }

/* ============================ 9. Loading overlay（原 JS 注入，现移入 CSS） ============================ */
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0,0,0,.5);
}
.loading-spinner {
    width: 48px; height: 48px;
    border: 5px solid rgba(255,255,255,.35);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ============================ 10. Responsive（向上增强） ============================ */

/* 平板及以上：页头横排、按钮回到自适应宽度 */
@media (min-width: 640px) {
    .container { padding: 0 1.25rem; }
    .main-content { padding: 2.25rem 0 3rem; }

    .page-header {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
        gap: 1rem;
    }
    .page-header h2 { font-size: 2rem; }

    .header-actions { width: auto; }
    .header-actions .btn { flex: 0 0 auto; }

    .section-title { font-size: 1.3rem; }

    .form-actions { flex-direction: row; }
    .form-actions .btn { width: auto; }

    .info-row { flex-direction: row; }
    .info-label { flex: 0 0 190px; }

    .files-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }

    .project-form, .login-card { padding: 2rem; }
    .project-actions .btn { flex: 0 0 auto; }
}

/* 桌面：多列卡片网格 */
@media (min-width: 900px) {
    .projects-grid { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 1.35rem; }
    .project-card { padding: 1.25rem 1.35rem 1.2rem 1.45rem; }
    /* 卡片内部间距在 PC 端维持原样：加大间距仅用于移动端 */
    .project-header { margin-bottom: 0.9rem; }
    .project-info { gap: .3rem; margin-bottom: 1rem; }
    /* 四个操作按钮在 PC 端保持一行：略收紧按钮间距/内边距，抵消“已打印/未打印”比“唛头”多出的字宽 */
    .project-actions { padding-top: 0.9rem; gap: 0.35rem; }
    .project-actions .btn { gap: 0.35rem; padding-left: 0.65rem; padding-right: 0.65rem; }
}

/* ============================ 11. Motion ============================ */
@keyframes docket-in {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin { to { transform: rotate(360deg); } }

.projects-grid .project-card:nth-child(1) { animation-delay: .02s; }
.projects-grid .project-card:nth-child(2) { animation-delay: .06s; }
.projects-grid .project-card:nth-child(3) { animation-delay: .10s; }
.projects-grid .project-card:nth-child(4) { animation-delay: .14s; }
.projects-grid .project-card:nth-child(5) { animation-delay: .18s; }
.projects-grid .project-card:nth-child(6) { animation-delay: .22s; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
        scroll-behavior: auto !important;
    }
}