/* ============================================================
   元器件库存管理 · 视觉系统
   方向：Lab Bench / 精密仪器工作台
   —— 深墨侧栏、暖纸底 + 图纸网格、铜橙信号色、等宽数字
   ============================================================ */

/* ---------------- 1. Tokens ---------------- */
:root {
    /* Ink scale */
    --ink-900: #101418;
    --ink-850: #151A20;
    --ink-800: #1B2128;
    --ink-700: #232B34;
    --ink-600: #3B4552;
    --ink-500: #586373;
    --ink-400: #7A8595;
    --ink-350: #949DAB;
    --ink-300: #A9B1BD;
    --ink-200: #C8CDD6;
    --ink-100: #E7E9ED;
    --line: #E2E5EA;
    --line-soft: #EEF0F3;

    /* Surfaces */
    --paper: #F3F4F2;
    --surface: #FFFFFF;
    --surface-2: #FAFAF8;
    --surface-3: #F6F7F5;

    /* Signal — 铜橙（焊盘 / 氧化铜） */
    --copper: #B5541F;
    --copper-dark: #96430F;
    --copper-soft: #FBF1EA;
    --copper-line: #EFD6C6;

    /* Semantic */
    --green: #15703A;
    --green-soft: #EDF9F2;
    --green-line: #C6E8D5;
    --red: #A82A20;
    --red-soft: #FDEFEE;
    --red-line: #F2D3CF;
    --amber: #86600C;
    --amber-soft: #FDF6E3;
    --amber-line: #ECDCB2;
    --steel: #2C5C7A;
    --steel-soft: #EFF6FB;
    --steel-line: #CFE2EF;

    /* Type */
    --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono",
                 Consolas, "Liberation Mono", "Courier New", monospace;
    --text-xs: 11.5px;
    --text-sm: 12.75px;
    --text-md: 13.5px;
    --text-lg: 15px;
    --text-xl: 17px;
    --text-2xl: 21px;
    --text-3xl: 28px;

    /* Space */
    --sp-1: 4px;
    --sp-2: 8px;
    --sp-3: 12px;
    --sp-4: 16px;
    --sp-5: 20px;
    --sp-6: 24px;
    --sp-8: 32px;
    --sp-10: 40px;

    /* Radius & elevation */
    --r-sm: 6px;
    --r-md: 9px;
    --r-lg: 13px;
    --r-xl: 18px;
    --sh-1: 0 1px 2px rgba(16, 20, 24, .05);
    --sh-2: 0 2px 10px -2px rgba(16, 20, 24, .08);
    --sh-3: 0 18px 40px -16px rgba(16, 20, 24, .28);

    --sidebar-w: 232px;
}

/* ---------------- 2. Base ---------------- */
* { -webkit-tap-highlight-color: transparent; }

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

body {
    font-family: var(--font-ui);
    font-size: var(--text-lg);
    line-height: 1.55;
    color: var(--ink-700);
    background: var(--paper);
    font-feature-settings: "kern" 1;
    font-kerning: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--ink-900);
    font-weight: 600;
    letter-spacing: -.012em;
    line-height: 1.25;
}

a { color: var(--copper); text-decoration: none; }
a:hover { color: var(--copper-dark); }

.mono, .num, td.mono, .metric-value, .data-table .num {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    letter-spacing: -.01em;
}

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

::selection { background: #F5DCCB; color: var(--ink-900); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
    }
}

/* ---------------- 3. Shell ---------------- */
.app-shell {
    display: grid;
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
    min-height: 100vh;
}

.app-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--paper);
    background-image:
        linear-gradient(to right, rgba(16, 20, 24, .032) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(16, 20, 24, .032) 1px, transparent 1px);
    background-size: 34px 34px;
    background-position: -1px -1px;
}

.app-content {
    flex: 1;
    padding: var(--sp-6) clamp(16px, 2.2vw, 32px) var(--sp-10);
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
}

/* ---------------- 4. Sidebar ---------------- */
.app-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--ink-900);
    background-image:
        radial-gradient(120% 60% at 0% 0%, rgba(181, 84, 31, .13), transparent 62%),
        linear-gradient(to bottom, rgba(255, 255, 255, .035) 0, transparent 180px);
    border-right: 1px solid #000;
    z-index: 60;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 18px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, .07);
}

.brand-mark {
    width: 32px;
    height: 32px;
    flex: none;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: linear-gradient(150deg, #C9641F, #8F3F0B);
    color: #fff;
    box-shadow: 0 1px 0 rgba(255, 255, 255, .22) inset, 0 4px 12px -4px rgba(181, 84, 31, .8);
}

.brand-mark svg { width: 18px; height: 18px; display: block; }

.brand-text { min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.brand-title {
    display: block;
    color: #F2F4F6;
    font-size: 13.5px;
    font-weight: 600;
    letter-spacing: .01em;
    line-height: 1.2;
    white-space: nowrap;
}
.brand-sub {
    display: block;
    color: var(--ink-400);
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: .1em;
    text-transform: uppercase;
    line-height: 1.3;
}

.sidebar-scroll {
    flex: 1;
    overflow-y: auto;
    padding: var(--sp-4) var(--sp-2) var(--sp-3);
    scrollbar-width: thin;
    scrollbar-color: #313A45 transparent;
}

.nav-group + .nav-group { margin-top: var(--sp-5); }

.nav-label {
    padding: 0 10px var(--sp-2);
    color: #6D7887;
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.nav-link-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    margin-bottom: 2px;
    border-radius: var(--r-md);
    color: #A3ADBA;
    font-size: var(--text-md);
    font-weight: 450;
    position: relative;
    transition: background .14s ease, color .14s ease;
}
.nav-link-item i {
    font-size: 15px;
    width: 17px;
    text-align: center;
    color: #78838F;
    transition: color .14s ease;
}
.nav-link-item:hover { background: rgba(255, 255, 255, .055); color: #EDF0F3; }
.nav-link-item:hover i { color: #C0C8D2; }

.nav-link-item.active {
    color: #FFFFFF;
    background: rgba(181, 84, 31, .19);
    font-weight: 550;
}
.nav-link-item.active i { color: #E88B4F; }
.nav-link-item.active::before {
    content: "";
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 17px;
    border-radius: 0 3px 3px 0;
    background: #D2743A;
}

.nav-badge {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 600;
    padding: 1px 6px;
    border-radius: 5px;
    background: rgba(181, 84, 31, .26);
    color: #F0B48D;
}
.nav-link-item.active .nav-badge { background: rgba(255, 255, 255, .16); color: #fff; }

.sidebar-foot {
    padding: 12px 16px 16px;
    border-top: 1px solid rgba(255, 255, 255, .07);
    color: #626D7B;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: .05em;
    display: flex;
    justify-content: space-between;
    gap: 8px;
}

/* ---------------- 5. Topbar ---------------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: 13px clamp(14px, 2.2vw, 30px);
    background: rgba(255, 255, 255, .88);
    backdrop-filter: saturate(1.4) blur(10px);
    -webkit-backdrop-filter: saturate(1.4) blur(10px);
    border-bottom: 1px solid var(--line);
}

.topbar-heading { min-width: 0; }
.topbar-title {
    margin: 0;
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--ink-900);
    letter-spacing: -.015em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.topbar-sub {
    margin: 1px 0 0;
    font-size: var(--text-sm);
    color: var(--ink-400);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.topbar-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

.icon-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    flex: none;
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    background: var(--surface);
    color: var(--ink-600);
    font-size: 16px;
    transition: background .14s, border-color .14s;
}
.icon-btn:hover { background: var(--surface-3); border-color: var(--ink-200); }
.icon-btn--always { display: inline-flex; }

.user-chip {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 4px 10px 4px 4px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
}
.avatar {
    width: 27px;
    height: 27px;
    flex: none;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--ink-800);
    color: #F6C9AB;
    font-size: 12px;
    font-weight: 600;
}
.user-meta { line-height: 1.15; }
.user-name { font-size: var(--text-sm); font-weight: 550; color: var(--ink-700); }
.user-role {
    font-size: 10.5px;
    color: var(--ink-400);
    font-family: var(--font-mono);
    letter-spacing: .03em;
}

/* ---------------- 6. Toolbar / filters ---------------- */
.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--sp-2);
    margin-bottom: var(--sp-4);
}
.toolbar-end { margin-left: auto; display: flex; gap: var(--sp-2); }

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-4);
    margin-bottom: var(--sp-4);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--sh-1);
}
.filter-field { min-width: 0; }
.filter-field--grow { flex: 1 1 220px; }
.filter-field label {
    display: block;
    margin-bottom: 5px;
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
    color: var(--ink-400);
}

/* ---------------- 7. Metrics ---------------- */
.metric-strip {
    display: grid;
    grid-template-columns: 1.45fr 1fr 1fr 1fr;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--sh-1);
    overflow: hidden;
    margin-bottom: var(--sp-4);
}

.metric-strip--3 { grid-template-columns: 1.45fr 1fr 1fr; }

.metric {
    padding: 17px var(--sp-5) 18px;
    border-left: 1px solid var(--line-soft);
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}
.metric:first-child { border-left: 0; }

.metric-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--ink-400);
}
.metric-label i { font-size: 12px; }

.metric-value {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--ink-900);
    line-height: 1.15;
}
.metric--lead .metric-value { font-size: var(--text-3xl); letter-spacing: -.03em; }
.metric-value .unit {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--ink-400);
    margin-left: 3px;
    font-family: var(--font-ui);
}
.metric-value.is-warn { color: var(--amber); }
.metric-value.is-signal { color: var(--copper); }

.metric-note {
    font-size: var(--text-sm);
    color: var(--ink-400);
    margin-top: 2px;
}

/* inline mini stats */
.stat-inline {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
    margin-bottom: var(--sp-4);
}
.stat-pill {
    display: flex;
    align-items: baseline;
    gap: 7px;
    padding: 9px 14px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: var(--text-sm);
    color: var(--ink-500);
    box-shadow: var(--sh-1);
}
.stat-pill strong {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--ink-900);
}
.stat-pill.is-in strong { color: var(--green); }
.stat-pill.is-out strong { color: var(--red); }

/* ---------------- 8. Panel ---------------- */
.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--sh-1);
    overflow: hidden;
}
.panel + .panel { margin-top: var(--sp-4); }

.panel-head {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 13px var(--sp-5);
    border-bottom: 1px solid var(--line-soft);
}
.panel-title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--ink-800);
    display: flex;
    align-items: center;
    gap: 8px;
}
.panel-title i { color: var(--ink-350); font-size: 15px; }
.panel-link {
    margin-left: auto;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--copper);
    display: inline-flex;
    align-items: center;
    gap: 3px;
}
.panel-link:hover { gap: 6px; }
.panel-link { transition: gap .16s ease; }
.panel-body { padding: var(--sp-5); }
.panel-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--sp-2);
    padding: 11px var(--sp-5);
    border-top: 1px solid var(--line-soft);
    background: var(--surface-2);
    font-size: var(--text-sm);
    color: var(--ink-400);
}

.panel-grid {
    display: grid;
    gap: var(--sp-4);
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.panel-grid > .panel + .panel { margin-top: 0; }

/* ---------------- 9. Table ---------------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--text-md);
}

.data-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 9px 14px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--line);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--ink-400);
    text-align: left;
    white-space: nowrap;
}

.data-table tbody td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--line-soft);
    vertical-align: middle;
    color: var(--ink-700);
}

.data-table tbody tr { transition: background .12s ease; }
.data-table tbody tr:hover { background: #FDFAF7; }
.data-table tbody tr:last-child td { border-bottom: 0; }

.data-table .cell-title {
    font-family: var(--font-mono);
    font-size: var(--text-md);
    font-weight: 600;
    color: var(--ink-900);
    letter-spacing: -.01em;
}
.data-table .cell-sub {
    display: block;
    font-size: var(--text-xs);
    color: var(--ink-400);
    font-weight: 400;
    letter-spacing: 0;
}
.data-table .cell-time {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--ink-400);
    white-space: nowrap;
}
.data-table .num { text-align: right; }
.data-table .col-actions { text-align: right; white-space: nowrap; }

/* 预警行：左侧铜色标记 */
.data-table tr.is-warn td:first-child { box-shadow: inset 2px 0 0 #D2743A; }
.data-table tr.is-warn { background: #FFFCF6; }
.data-table tr.is-warn:hover { background: #FFF7EC; }

/* 库存量 + 迷你条 */
.stock-cell { display: flex; align-items: center; gap: 9px; }
.stock-num {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    font-size: var(--text-md);
    color: var(--ink-900);
    min-width: 34px;
    text-align: right;
}
.stock-num.is-low { color: var(--red); }
.meter {
    position: relative;
    flex: 1;
    min-width: 34px;
    max-width: 76px;
    height: 4px;
    border-radius: 2px;
    background: var(--ink-100);
    overflow: hidden;
}
.meter > span {
    display: block;
    height: 100%;
    border-radius: 2px;
    background: var(--ink-300);
}
.meter.is-low > span { background: var(--red); }
.meter.is-tight > span { background: var(--amber); }
.meter.is-ok > span { background: var(--green); }

/* ---------------- 10. Pills / badges ---------------- */
.pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 9px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: .01em;
    line-height: 1.7;
    white-space: nowrap;
}
.pill::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
    opacity: .85;
}
.pill--plain::before { display: none; }

.pill--in    { color: var(--green); background: var(--green-soft); border-color: var(--green-line); }
.pill--out   { color: var(--red);   background: var(--red-soft);   border-color: var(--red-line); }
.pill--warn  { color: var(--amber); background: var(--amber-soft); border-color: var(--amber-line); }
.pill--admin { color: var(--copper); background: var(--copper-soft); border-color: var(--copper-line); }
.pill--muted { color: var(--ink-500); background: var(--surface-3); border-color: var(--line); }
.pill--info  { color: var(--steel); background: var(--steel-soft); border-color: var(--steel-line); }

.tag {
    display: inline-block;
    padding: 1px 7px;
    border-radius: 5px;
    background: var(--surface-3);
    border: 1px solid var(--line);
    color: var(--ink-500);
    font-size: var(--text-xs);
    font-weight: 500;
    white-space: nowrap;
}

/* ---------------- 11. Buttons ---------------- */
.btn {
    --bs-btn-border-radius: var(--r-md);
    --bs-btn-font-size: var(--text-md);
    --bs-btn-font-weight: 550;
    --bs-btn-padding-y: 7px;
    --bs-btn-padding-x: 13px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border-radius: var(--r-md);
    font-weight: 550;
    letter-spacing: .005em;
    transition: background .14s ease, border-color .14s ease, color .14s ease, box-shadow .14s ease;
    box-shadow: none;
}
.btn:active { transform: translateY(.5px); }
.btn i { font-size: .95em; }

.btn-primary {
    --bs-btn-bg: var(--copper);
    --bs-btn-border-color: var(--copper);
    --bs-btn-color: #fff;
    --bs-btn-hover-bg: var(--copper-dark);
    --bs-btn-hover-border-color: var(--copper-dark);
    --bs-btn-hover-color: #fff;
    --bs-btn-active-bg: #83390B;
    --bs-btn-active-border-color: #83390B;
    --bs-btn-disabled-bg: #D9A98C;
    --bs-btn-disabled-border-color: #D9A98C;
    box-shadow: 0 1px 0 rgba(255, 255, 255, .16) inset, 0 2px 6px -2px rgba(181, 84, 31, .5);
}
.btn-primary:hover { box-shadow: 0 1px 0 rgba(255, 255, 255, .16) inset, 0 4px 10px -3px rgba(181, 84, 31, .6); }

.btn-outline-secondary {
    --bs-btn-color: var(--ink-600);
    --bs-btn-border-color: var(--ink-200);
    --bs-btn-hover-bg: var(--surface-3);
    --bs-btn-hover-border-color: var(--ink-300);
    --bs-btn-hover-color: var(--ink-800);
    --bs-btn-active-bg: var(--surface-3);
    background: var(--surface);
}

.btn-outline-primary {
    --bs-btn-color: var(--copper);
    --bs-btn-border-color: var(--copper-line);
    --bs-btn-hover-bg: var(--copper-soft);
    --bs-btn-hover-border-color: var(--copper);
    --bs-btn-hover-color: var(--copper-dark);
    background: var(--surface);
}

.btn-outline-success {
    --bs-btn-color: var(--green);
    --bs-btn-border-color: var(--green-line);
    --bs-btn-hover-bg: var(--green-soft);
    --bs-btn-hover-border-color: var(--green);
    --bs-btn-hover-color: var(--green);
    background: var(--surface);
}

.btn-outline-danger {
    --bs-btn-color: var(--red);
    --bs-btn-border-color: var(--red-line);
    --bs-btn-hover-bg: var(--red-soft);
    --bs-btn-hover-border-color: var(--red);
    --bs-btn-hover-color: var(--red);
    background: var(--surface);
}

.btn-outline-warning {
    --bs-btn-color: var(--amber);
    --bs-btn-border-color: var(--amber-line);
    --bs-btn-hover-bg: var(--amber-soft);
    --bs-btn-hover-border-color: var(--amber);
    --bs-btn-hover-color: var(--amber);
    background: var(--surface);
}

.btn-success {
    --bs-btn-bg: var(--green);
    --bs-btn-border-color: var(--green);
    --bs-btn-hover-bg: #105A2E;
    --bs-btn-hover-border-color: #105A2E;
    --bs-btn-active-bg: #0D4A26;
}
.btn-danger {
    --bs-btn-bg: var(--red);
    --bs-btn-border-color: var(--red);
    --bs-btn-hover-bg: #8E2119;
    --bs-btn-hover-border-color: #8E2119;
    --bs-btn-active-bg: #7C1C15;
}

.btn-sm {
    --bs-btn-padding-y: 4px;
    --bs-btn-padding-x: 9px;
    --bs-btn-font-size: var(--text-sm);
    --bs-btn-border-radius: var(--r-sm);
    gap: 4px;
}
.btn-sm i { font-size: 12px; }

.btn-icon {
    width: 29px;
    height: 29px;
    padding: 0 !important;
    flex: none;
}

/* ---------------- 12. Forms ---------------- */
.form-label {
    margin-bottom: 5px;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--ink-600);
    letter-spacing: .01em;
}
.req { color: var(--red); font-weight: 600; }

.form-control, .form-select {
    border: 1px solid var(--ink-200);
    border-radius: var(--r-md);
    padding: 8px 11px;
    font-size: var(--text-md);
    color: var(--ink-800);
    background-color: var(--surface);
    transition: border-color .14s ease, box-shadow .14s ease;
}
.form-control::placeholder { color: var(--ink-350); }
.form-control:focus, .form-select:focus {
    border-color: var(--copper);
    box-shadow: 0 0 0 3px rgba(181, 84, 31, .13);
    background-color: var(--surface);
}
.form-control:hover:not(:focus), .form-select:hover:not(:focus) { border-color: var(--ink-300); }
.form-text { font-size: var(--text-xs); color: var(--ink-400); }

textarea.form-control { min-height: 68px; }

.input-group-text {
    border: 1px solid var(--ink-200);
    background: var(--surface-3);
    color: var(--ink-500);
    font-size: var(--text-sm);
}

.form-section + .form-section {
    margin-top: var(--sp-6);
    padding-top: var(--sp-6);
    border-top: 1px dashed var(--line);
}
.form-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: var(--sp-4);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--ink-400);
}
.form-section-title::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
}

.form-actions {
    display: flex;
    gap: var(--sp-2);
    margin-top: var(--sp-6);
    padding-top: var(--sp-5);
    border-top: 1px solid var(--line);
}

/* ---------------- 13. Alerts & empty ---------------- */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    padding: 11px 14px;
    border-radius: var(--r-md);
    border: 1px solid transparent;
    font-size: var(--text-md);
    margin-bottom: var(--sp-4);
}
.alert-success { background: var(--green-soft); border-color: var(--green-line); color: var(--green); }
.alert-danger  { background: var(--red-soft);   border-color: var(--red-line);   color: var(--red); }
.alert-warning { background: var(--amber-soft); border-color: var(--amber-line); color: var(--amber); }
.alert-info    { background: var(--steel-soft); border-color: var(--steel-line); color: var(--steel); }

.empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: var(--sp-10) var(--sp-5);
    text-align: center;
}
.empty-icon {
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--surface-3);
    border: 1px solid var(--line);
    color: var(--ink-300);
    font-size: 20px;
    margin-bottom: 4px;
}
.empty h3 { margin: 0; font-size: var(--text-lg); color: var(--ink-600); font-weight: 600; }
.empty p { margin: 0; font-size: var(--text-sm); color: var(--ink-400); max-width: 34ch; }
.empty .btn { margin-top: var(--sp-3); }

/* ---------------- 14. Pagination ---------------- */
.pagination {
    --bs-pagination-font-size: var(--text-sm);
    --bs-pagination-border-color: var(--line);
    --bs-pagination-color: var(--ink-600);
    --bs-pagination-hover-color: var(--copper);
    --bs-pagination-hover-bg: var(--copper-soft);
    --bs-pagination-hover-border-color: var(--copper-line);
    --bs-pagination-active-bg: var(--copper);
    --bs-pagination-active-border-color: var(--copper);
    --bs-pagination-border-radius: var(--r-sm);
    gap: 3px;
}
.page-link {
    min-width: 29px;
    text-align: center;
    border-radius: var(--r-sm) !important;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    padding: 4px 8px;
}

/* ---------------- 15. Auth page ---------------- */
.auth-page {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    background: var(--paper);
}

.auth-aside {
    position: relative;
    overflow: hidden;
    background: var(--ink-900);
    background-image:
        radial-gradient(90% 70% at 12% 8%, rgba(181, 84, 31, .22), transparent 58%),
        radial-gradient(70% 60% at 96% 92%, rgba(44, 92, 122, .28), transparent 62%),
        linear-gradient(to right, rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: auto, auto, 40px 40px, 40px 40px;
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: #E7EBEF;
}

.auth-brand { display: flex; align-items: center; gap: 11px; }
.auth-brand .brand-title { font-size: 15px; }

.auth-headline {
    max-width: 20ch;
    font-size: clamp(28px, 3vw, 40px);
    line-height: 1.14;
    font-weight: 600;
    letter-spacing: -.03em;
    color: #FFFFFF;
    margin: 0;
}
.auth-headline em {
    font-style: normal;
    color: #E88B4F;
}
.auth-lead {
    margin-top: 16px;
    max-width: 42ch;
    font-size: var(--text-md);
    line-height: 1.7;
    color: #96A1AE;
}

.auth-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 26px;
    margin-top: 36px;
    padding-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, .1);
}
.auth-spec { min-width: 0; }
.auth-spec dt {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: .13em;
    text-transform: uppercase;
    color: #6E7A88;
    margin-bottom: 3px;
}
.auth-spec dd {
    margin: 0;
    font-size: var(--text-sm);
    color: #CDD4DC;
}

.auth-foot {
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: .08em;
    color: #5E6A78;
}

.auth-main {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
}
.auth-card { width: 100%; max-width: 372px; }
.auth-mobile-brand { display: none; align-items: center; gap: 10px; margin-bottom: 22px; }
.auth-mobile-brand .brand-title { color: var(--ink-900); }
.auth-card-head { margin-bottom: 26px; }
.auth-card-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -.02em;
    margin: 0 0 6px;
}
.auth-card-sub { margin: 0; font-size: var(--text-md); color: var(--ink-400); }

.auth-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    padding: 9px 12px;
    border: 1px dashed var(--ink-200);
    border-radius: var(--r-md);
    background: var(--surface-2);
    font-size: var(--text-sm);
    color: var(--ink-500);
}
.auth-hint code {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--ink-800);
    background: var(--surface-3);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 0 5px;
}

/* ---------------- 17. 元器件图片 ---------------- */
.part-thumb {
    display: block;
    width: 112px;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    margin-bottom: 12px;
}
.part-thumb--empty {
    display: grid;
    place-items: center;
    background: var(--surface-3);
    color: var(--ink-200);
    font-size: 20px;
}

.thumb-box {
    width: 168px;
    height: 126px;
    flex: none;
    display: grid;
    place-items: center;
    overflow: hidden;
    border: 1px dashed var(--ink-200);
    border-radius: var(--r-md);
    background: var(--surface-3);
}
.thumb-box img { width: 100%; height: 100%; object-fit: contain; display: block; }
.thumb-box i { font-size: 26px; color: var(--ink-300); }
.thumb-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    color: var(--ink-300);
}
.thumb-empty i { font-size: 21px; }
.thumb-empty em {
    font-style: normal;
    font-size: 11px;
    letter-spacing: .04em;
    color: var(--ink-350);
}
.thumb-box--sm { width: 120px; height: 90px; }
.thumb-box--filled { border-style: solid; background: #fff; }

/* 流水里的入库照片缩略图 */
.log-thumb {
    display: block;
    width: 48px;
    height: 36px;
    object-fit: cover;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 4px;
}
.log-thumb--empty {
    display: grid;
    place-items: center;
    width: 48px;
    height: 36px;
    border: 1px dashed var(--line);
    border-radius: 4px;
    color: var(--ink-200);
    font-size: 12px;
}
.log-thumb:hover { border-color: var(--copper); }

/* ---------------- 18. 维护管理 ---------------- */
.panel--danger { border-color: var(--red-line); }
.panel--danger .panel-head { background: var(--red-soft); border-bottom-color: var(--red-line); }
.panel--danger .panel-title i { color: var(--red); }

.maint-list { display: flex; flex-direction: column; }
.maint-row {
    display: flex;
    gap: 18px;
    align-items: center;
    justify-content: space-between;
    padding: 17px 0;
    border-top: 1px solid var(--line);
}
.maint-row:first-child { border-top: 0; padding-top: 0; }
.maint-row:last-child { padding-bottom: 0; }
.maint-row h3 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--ink-800);
    margin: 0 0 5px;
}
.maint-row p {
    margin: 0;
    font-size: var(--text-sm);
    color: var(--ink-500);
    line-height: 1.65;
}
.maint-row form { flex: none; }

@media (max-width: 575.98px) {
    .maint-row { flex-direction: column; align-items: stretch; }
    .maint-row form { margin-top: 4px; }
    .maint-row form .btn { width: 100%; }
}

/* ---------------- 16. Mobile ---------------- */
.mobile-nav { display: none; }
.drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(16, 20, 24, .48);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, visibility .2s ease;
    z-index: 55;
}
.drawer-mask.show { opacity: 1; visibility: visible; }

@media (max-width: 991.98px) {
    .app-shell { grid-template-columns: minmax(0, 1fr); }

    .app-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 258px;
        transform: translateX(-102%);
        transition: transform .24s cubic-bezier(.3, .8, .4, 1);
        box-shadow: var(--sh-3);
        z-index: 60;
    }
    .app-sidebar.show { transform: translateX(0); }

    .icon-btn { display: inline-flex; }

    .app-content {
        padding: var(--sp-4) var(--sp-4) calc(76px + env(safe-area-inset-bottom));
    }

    .topbar { padding: 11px var(--sp-4); }
    .topbar-sub { display: none; }
    .topbar-title { font-size: var(--text-lg); }
    .user-meta { display: none; }
    .user-chip { padding: 3px; border-radius: 50%; }

    .metric-strip { grid-template-columns: 1fr 1fr; }
    .metric { border-left: 0; border-top: 1px solid var(--line-soft); padding: 13px 15px 14px; }
    .metric:nth-child(1), .metric:nth-child(2) { border-top: 0; }
    .metric:nth-child(even) { border-left: 1px solid var(--line-soft); }
    .metric-value { font-size: var(--text-xl); }
    .metric--lead .metric-value { font-size: var(--text-2xl); }
    .metric-label { font-size: 10.5px; letter-spacing: .05em; }

    .panel-head { padding: 11px var(--sp-4); }
    .panel-body { padding: var(--sp-4); }
    .panel-foot { padding: 10px var(--sp-4); }

    .data-table thead th { padding: 8px 10px; }
    .data-table tbody td { padding: 10px; }

    /* 移动端底部导航 */
    .mobile-nav {
        display: flex;
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 50;
        background: rgba(255, 255, 255, .94);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-top: 1px solid var(--line);
        padding: 5px 4px calc(5px + env(safe-area-inset-bottom));
        box-shadow: 0 -6px 20px -14px rgba(16, 20, 24, .4);
    }
    .mobile-nav a {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2px;
        padding: 5px 2px;
        border-radius: var(--r-sm);
        color: var(--ink-400);
        font-size: 10.5px;
        font-weight: 500;
        transition: color .14s ease, background .14s ease;
    }
    .mobile-nav a i { font-size: 17px; line-height: 1; }
    .mobile-nav a.active { color: var(--copper); background: var(--copper-soft); }

    .auth-page { grid-template-columns: 1fr; }
    .auth-aside { display: none; }
    .auth-main { min-height: 100vh; align-items: center; }
    .auth-mobile-brand { display: flex; }
}

@media (max-width: 575.98px) {
    .filter-bar { padding: var(--sp-3); gap: var(--sp-2); }
    .filter-field { flex: 1 1 100%; }
    .toolbar { gap: 6px; }
    .pill { font-size: 10.75px; padding: 1px 7px; }
    .empty { padding: var(--sp-8) var(--sp-4); }
}

/* 打印 / 导出预览 */
@media print {
    .app-sidebar, .topbar, .mobile-nav, .toolbar, .filter-bar, .col-actions { display: none !important; }
    .app-main { background: #fff; }
    .app-content { padding: 0; }
    .panel { box-shadow: none; border-color: #ccc; }
}