/* 二阶管理面板 - 白底黑字极简风格 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --text: #1a1a1a;
    --text-secondary: #666;
    --border: #ddd;
    --bg: #ffffff;
    --bg-hover: #f5f5f5;
    --bg-active: #eee;
    --green: #22c55e;
    --gray: #9ca3af;
    --orange: #f59e0b;
    --blue: #3b82f6;
    --red: #ef4444;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    line-height: 1.5;
}

/* ─── Layout ─── */
.app-header {
    position: fixed; top: 0; left: 0; right: 0; height: 48px;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    display: flex; align-items: center; padding: 0 20px;
    z-index: 100;
}
.app-header .logo { font-size: 16px; font-weight: 600; margin-right: 32px; }
.app-header nav { display: flex; gap: 0; height: 100%; }
.app-header nav a {
    display: flex; align-items: center; padding: 0 16px;
    text-decoration: none; color: var(--text-secondary);
    font-size: 13px; border-bottom: 2px solid transparent;
    cursor: pointer;
}
.app-header nav a:hover { color: var(--text); background: var(--bg-hover); }
.app-header nav a.active { color: var(--text); border-bottom-color: var(--text); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.header-right .user-info { font-size: 12px; color: var(--text-secondary); }
.header-right .logout { font-size: 12px; color: var(--blue); cursor: pointer; }

.app-main {
    margin-top: 48px; padding: 20px;
    max-width: 1400px; margin-left: auto; margin-right: auto;
}

/* ─── Tab Content ─── */
.tab-content { display: none; }
.tab-content.active { display: block; }
.tab-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.tab-desc { font-size: 12px; color: var(--text-secondary); margin-bottom: 16px; }

/* ─── Stats Cards ─── */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.stat-card {
    border: 1px solid var(--border); padding: 16px;
    background: var(--bg);
}
.stat-card .num { font-size: 24px; font-weight: 600; }
.stat-card .label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ─── Charts ─── */
.charts-row { display: grid; grid-template-columns: 2fr 1fr; gap: 12px; margin-bottom: 20px; }
.chart-box { border: 1px solid var(--border); padding: 16px; }
.chart-box .title { font-size: 12px; color: var(--text-secondary); margin-bottom: 8px; }
.chart-box canvas { width: 100% !important; height: 200px !important; }

/* ─── Recent Activity ─── */
.activity-box { border: 1px solid var(--border); }
.activity-box .title { font-size: 12px; color: var(--text-secondary); padding: 12px 16px; border-bottom: 1px solid var(--border); }
.activity-item {
    padding: 8px 16px; border-bottom: 1px solid var(--border);
    font-size: 12px; display: flex; gap: 8px;
}
.activity-item:last-child { border-bottom: none; }
.activity-item .time { color: var(--text-secondary); white-space: nowrap; }
.activity-item .action { color: var(--text); }
.activity-item .result { color: var(--text-secondary); }

/* ─── Filters ─── */
.filters { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; align-items: center; }
.filters select, .filters input {
    border: 1px solid var(--border); background: var(--bg);
    padding: 6px 10px; font-size: 13px; color: var(--text);
    outline: none;
}
.filters select:focus, .filters input:focus { border-color: var(--text); }
.filters input { min-width: 180px; }

/* ─── Table ─── */
.table-wrap { border: 1px solid var(--border); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead { background: var(--bg-hover); }
th { text-align: left; padding: 10px 12px; font-weight: 500; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 8px 12px; border-bottom: 1px solid var(--border); }
tr:hover td { background: var(--bg-hover); }
tr:last-child td { border-bottom: none; }
th .sort { cursor: pointer; }

/* ─── Status Badge ─── */
.status { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; }
.status .dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.status.online .dot { background: var(--green); }
.status.offline .dot { background: var(--gray); }
.status.error .dot { background: var(--orange); }

/* ─── Buttons ─── */
.btn {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 6px 12px; font-size: 12px; border: 1px solid var(--border);
    background: var(--bg); cursor: pointer; color: var(--text);
    text-decoration: none; white-space: nowrap;
}
.btn:hover { background: var(--bg-hover); }
.btn-sm { padding: 3px 8px; font-size: 11px; }
.btn-red { border-color: var(--red); color: var(--red); }
.btn-red:hover { background: #fef2f2; }
.btn-blue { border-color: var(--blue); color: var(--blue); }
.btn-blue:hover { background: #eff6ff; }

/* ─── Batch Bar ─── */
.batch-bar {
    display: none; position: fixed; bottom: 0; left: 0; right: 0;
    border-top: 1px solid var(--border); background: var(--bg);
    padding: 12px 20px; gap: 8px; align-items: center;
    z-index: 100;
}
.batch-bar.show { display: flex; }
.batch-bar .count { font-size: 13px; margin-right: 8px; }
.batch-bar .btn { padding: 8px 16px; }

/* ─── Detail Page ─── */
.detail-header {
    display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
}
.detail-header .back { font-size: 13px; color: var(--blue); cursor: pointer; }
.detail-header .name { font-size: 16px; font-weight: 600; }
.detail-header .actions { margin-left: auto; display: flex; gap: 8px; }

.detail-info {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px; padding: 12px; border: 1px solid var(--border); margin-bottom: 16px;
    font-size: 12px;
}
.detail-info .item .lbl { color: var(--text-secondary); }
.detail-info .item .val { font-weight: 500; }

.detail-3col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.detail-col { border: 1px solid var(--border); }
.detail-col .col-title {
    font-size: 12px; font-weight: 500; padding: 10px 12px;
    border-bottom: 1px solid var(--border); background: var(--bg-hover);
}
.detail-col .col-body { padding: 12px; }

/* ─── Scan Categories ─── */
.scan-cats { display: flex; flex-direction: column; gap: 6px; }
.scan-cat {
    display: flex; align-items: center; gap: 8px; padding: 6px 8px;
    border: 1px solid var(--border); cursor: pointer; font-size: 12px;
}
.scan-cat:hover { background: var(--bg-hover); }
.scan-cat input[type="checkbox"] { margin: 0; }
.scan-cat .count { color: var(--text-secondary); margin-left: auto; }

/* ─── File List ─── */
.file-list { display: flex; flex-direction: column; gap: 4px; }
.file-item {
    display: flex; align-items: center; gap: 8px; padding: 4px 0;
    font-size: 12px; border-bottom: 1px solid var(--border);
}
.file-item .fname { flex: 1; }
.file-item .fsize { color: var(--text-secondary); }
.file-item .ftime { color: var(--text-secondary); font-size: 11px; }

/* ─── Monitor Area ─── */
.monitor-screen {
    border: 1px solid var(--border); height: 240px;
    display: flex; align-items: center; justify-content: center;
    background: #fafafa; font-size: 12px; color: var(--text-secondary);
    margin-bottom: 8px; overflow: hidden;
}
.monitor-screen img { width: 100%; height: 100%; object-fit: contain; }

.monitor-btns { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }

.cmd-input-row { display: flex; gap: 6px; margin-bottom: 8px; }
.cmd-input-row input {
    flex: 1; border: 1px solid var(--border); padding: 6px 10px;
    font-size: 13px; outline: none;
}
.cmd-input-row input:focus { border-color: var(--text); }

.cmd-history { max-height: 180px; overflow-y: auto; }
.cmd-item {
    padding: 4px 0; font-size: 11px; border-bottom: 1px solid var(--border);
    font-family: 'Courier New', monospace;
}
.cmd-item .cmd-time { color: var(--text-secondary); }
.cmd-item .cmd-cmd { color: var(--blue); }
.cmd-item .cmd-res { color: var(--text); white-space: pre-wrap; }

/* ─── Split Layout ─── */
.split-layout { display: grid; grid-template-columns: 240px 1fr; gap: 12px; }
.side-panel { border: 1px solid var(--border); }
.side-panel .panel-title { font-size: 12px; font-weight: 500; padding: 10px 12px; border-bottom: 1px solid var(--border); background: var(--bg-hover); }
.side-list { list-style: none; }
.side-list li {
    padding: 8px 12px; font-size: 12px; cursor: pointer;
    border-bottom: 1px solid var(--border); display: flex; justify-content: space-between;
}
.side-list li:hover { background: var(--bg-hover); }
.side-list li.active { background: var(--bg-active); font-weight: 500; }
.side-list li .badge { font-size: 11px; color: var(--text-secondary); }

.group-actions { padding: 8px; display: flex; gap: 4px; }

/* ─── Settings ─── */
.settings-form { max-width: 600px; }
.settings-form .field { margin-bottom: 12px; }
.settings-form .field label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.settings-form .field input, .settings-form .field select {
    width: 100%; border: 1px solid var(--border); padding: 8px 10px;
    font-size: 13px; outline: none;
}
.settings-form .field input:focus { border-color: var(--text); }

.users-table { margin-top: 20px; }

/* ─── Pagination ─── */
.pagination { display: flex; justify-content: center; gap: 4px; padding: 12px 0; }
.pagination .btn { min-width: 32px; justify-content: center; }
.pagination .btn.active { background: var(--bg-active); font-weight: 600; }

/* ─── Modal ─── */
.modal-overlay {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.3);
    z-index: 200; align-items: center; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal-box {
    background: var(--bg); border: 1px solid var(--border);
    min-width: 400px; max-width: 600px;
}
.modal-header { padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 500; display: flex; justify-content: space-between; }
.modal-body { padding: 16px; }
.modal-footer { padding: 12px 16px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ─── Login ─── */
.login-wrap {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; background: #f5f5f5;
}
.login-box {
    background: var(--bg); border: 1px solid var(--border);
    padding: 32px; width: 360px;
}
.login-box h1 { font-size: 18px; margin-bottom: 4px; }
.login-box p { font-size: 12px; color: var(--text-secondary); margin-bottom: 20px; }
.login-box .field { margin-bottom: 12px; }
.login-box .field label { display: block; font-size: 12px; margin-bottom: 4px; }
.login-box .field input {
    width: 100%; border: 1px solid var(--border); padding: 8px 10px;
    font-size: 13px; outline: none;
}
.login-box .field input:focus { border-color: var(--text); }
.login-box .btn { width: 100%; justify-content: center; padding: 10px; }
.login-error { color: var(--red); font-size: 12px; margin-top: 8px; }

/* ─── Utilities ─── */
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.gap-8 { gap: 8px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.ml-auto { margin-left: auto; }
.text-sm { font-size: 12px; }
.text-secondary { color: var(--text-secondary); }


/* ─── Remote Control ─── */
.remote-screen {
    width: 100%; height: 420px;
    background: #0a0a0a;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden; position: relative;
    cursor: crosshair;
}
.remote-screen img { width: 100%; height: 100%; object-fit: contain; }
.remote-placeholder {
    color: #555; font-size: 14px;
    display: flex; align-items: center; justify-content: center;
    height: 100%; width: 100%;
}
.remote-status { font-size: 11px; margin-left: 8px; }
.remote-status.online { color: var(--green); }
.remote-status.offline { color: var(--gray); }
.remote-status.connecting { color: var(--orange); }

.remote-toolbar {
    padding: 6px 8px; border-top: 1px solid var(--border);
    background: var(--bg-hover);
    display: flex; align-items: center; gap: 6px;
}
.remote-toolbar-group { display: flex; gap: 4px; align-items: center; }

/* ─── Command Button Grid ─── */
.cmd-button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 4px;
}
.cmd-btn {
    display: flex; align-items: center; gap: 6px;
    padding: 6px 8px; border: 1px solid var(--border);
    background: var(--bg); cursor: pointer; color: var(--text);
    font-size: 12px; text-align: left;
}
.cmd-btn:hover { background: var(--bg-hover); border-color: var(--blue); }
.cmd-btn .cmd-btn-icon { font-size: 14px; width: 20px; text-align: center; }
.cmd-btn .cmd-btn-label { font-size: 11px; }

/* ─── Detail 2-Column Layout ─── */
.detail-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }

/* ─── Alias Row ─── */
.detail-alias-row {
    display: flex; align-items: center; gap: 6px;
    padding: 6px 0; margin-bottom: 8px;
}

/* ─── Machine Code ─── */
.machine-code { font-family: 'Courier New', monospace; font-size: 11px; color: var(--text-secondary); }