:root {
    --bg: #f1f5fb;
    --panel: #fff;
    --text: #172b4d;
    --muted: #64748b;
    --line: #dbe5f1;
    --accent: #2563eb;
    --accent-dark: #1d4ed8;
    --danger: #c44848;
    --warn: #c9a227;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}
a { color: var(--accent-dark); text-decoration: none; }
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0b1830;
}
.login-card {
    width: 380px;
    background: #fff;
    border-radius: 10px;
    padding: 28px 28px 22px;
    box-shadow: 0 16px 40px rgba(0,0,0,.28);
}
.login-card h1 { margin: 0 0 6px; font-size: 22px; }
.login-card p { margin: 0 0 18px; color: var(--muted); font-size: 13px; }
label { display: block; font-size: 13px; margin: 0 0 6px; color: var(--muted); }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], input[type=file], select, textarea {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font: inherit;
    background: #fff;
}
textarea { min-height: 72px; resize: vertical; }
.field { margin-bottom: 12px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 6px;
    padding: 9px 14px;
    font: inherit;
    cursor: pointer;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
}
.btn:hover { background: var(--accent-dark); }
.btn-block { width: 100%; height: 42px; }
.btn-ghost { background: #edf3fc; color: var(--text); }
.btn-ghost:hover { background: #dce8fa; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #a33a3a; }
.btn-sm { padding: 6px 10px; font-size: 13px; }
.err { color: var(--danger); font-size: 13px; margin: 0 0 10px; }
.ok {
    background: #eaf2ff;
    color: #1e40af;
    padding: 10px 12px;
    border-radius: 6px;
    margin-bottom: 14px;
}
.hint { font-size: 12px; color: var(--muted); margin-top: 12px; }
.shell { display: flex; min-height: 100vh; align-items: stretch; }
.sidebar {
    width: 232px;
    flex-shrink: 0;
    background: #102340;
    color: #fff;
    display: flex;
    flex-direction: column;
    padding: 18px 12px 14px;
}
.side-brand { padding: 4px 10px 18px; }
.side-brand strong { display: block; color: #93c5fd; font-size: 18px; }
.side-brand span { display: block; color: #a9bfdc; font-size: 12px; margin-top: 4px; }
.side-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.side-nav a {
    color: #dce8f7;
    padding: 9px 12px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
}
.side-nav a:hover { background: #1a3558; color: #fff; }
.side-nav a.is-on { background: var(--accent); color: #fff; }
.side-foot {
    border-top: 1px solid #294463;
    padding: 12px 6px 4px;
    margin-top: 12px;
}
.side-drop { position: relative; }
.side-drop summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 8px;
    color: #dce8f7;
}
.side-drop summary::-webkit-details-marker { display: none; }
.side-drop summary::marker { content: ""; }
.side-drop summary:hover,
.side-drop[open] summary { background: #1a3558; color: #fff; }
.side-caret { font-size: 12px; color: #a9bfdc; }
.side-drop[open] .side-caret { transform: rotate(180deg); }
.side-user { display: block; font-size: 13px; font-weight: 600; }
.side-mail { display: block; font-size: 11px; color: #a9bfdc; margin-top: 2px; word-break: break-all; }
.side-menu {
    position: absolute;
    left: 0;
    right: 0;
    bottom: calc(100% + 6px);
    background: #1a3558;
    border: 1px solid #294a70;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 -8px 24px rgba(0,0,0,.28);
    z-index: 20;
}
.side-menu a,
.side-menu button {
    display: block;
    width: 100%;
    text-align: left;
    border: 0;
    background: transparent;
    color: #dce8f7;
    padding: 10px 12px;
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}
.side-menu a:hover,
.side-menu button:hover { background: #294a70; color: #fff; }
.side-menu a.is-on { background: var(--accent); color: #fff; }
.side-menu form { margin: 0; }
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.main-top {
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 14px 22px;
}
.main-top h1 { margin: 0; font-size: 18px; font-weight: 650; }
.wrap { max-width: 1280px; width: 100%; margin: 0 auto; padding: 18px; }
.mobile-menu-toggle, .mobile-menu-close, .sidebar-backdrop { display: none; }
@media (max-width: 800px) {
    .sidebar { position: fixed; inset: 0 auto 0 0; width: min(280px, 85vw); height: 100dvh; overflow-y: auto; z-index: 101; visibility: hidden; transform: translateX(-100%); }
    .sidebar.is-open { visibility: visible; transform: translateX(0); }
    .mobile-menu-toggle, .mobile-menu-close { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 0; border-radius: 8px; cursor: pointer; font-size: 24px; flex-shrink: 0; }
    .mobile-menu-toggle { background: #edf3fc; color: #102340; }
    .mobile-menu-close { align-self: flex-end; background: #294463; color: #fff; }
    .sidebar-backdrop:not([hidden]) { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 100; }
    body.sidebar-open { overflow: hidden; }
    .main-top { display: flex; align-items: center; gap: 12px; padding: 10px 14px; }
    .wrap { padding: 12px; }
}
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 16px;
}
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar h2 { margin: 0; font-size: 18px; flex: 1; }
.toolbar form.search { display: flex; gap: 8px; }
.filter-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: -4px 0 14px; }
.filter-tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
}
.filter-tab span {
    min-width: 22px;
    padding: 1px 7px;
    border-radius: 999px;
    background: #edf3fc;
    font-size: 12px;
    text-align: center;
}
.filter-tab:hover { background: #edf3fc; }
.filter-tab.is-on {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.filter-tab.is-on span { background: rgba(255,255,255,.22); color: #fff; }
.table-wrap { overflow: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.data th, table.data td { border-bottom: 1px solid var(--line); padding: 9px 8px; text-align: left; vertical-align: top; }
table.data th { font-size: 12px; color: var(--muted); font-weight: 600; }
.mono { font-family: Consolas, monospace; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; }
.badge-on { background: #e8f6e4; color: #2f6b28; }
.badge-off { background: #f8e8e8; color: #8a2f2f; }
.badge-warn { background: #f7efd0; color: #7a6414; }
.badge-muted { background: #edf3fc; color: #555; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.actions form { display: inline-flex; margin: 0; }
.btn-icon {
    width: 32px;
    height: 32px;
    min-width: 32px;
    padding: 0;
}
.btn-icon svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}
.sub { color: var(--muted); font-size: 12px; }
.code-cell { display: flex; align-items: center; gap: 8px; }
.code-mask { letter-spacing: 0.02em; }
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    color: var(--muted);
    cursor: pointer;
}
.icon-btn:hover { background: #edf3fc; color: var(--text); }
.icon-btn svg { width: 16px; height: 16px; fill: currentColor; }
.modal-close {
    width: 34px;
    height: 34px;
    border: 0;
    background: transparent;
    color: var(--muted);
}
.modal-close:hover { background: #edf3fc; color: var(--text); }
body.modal-open { overflow: hidden; }
.modal[hidden] { display: none !important; }
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
}
.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(20, 21, 24, 0.55);
}
.modal-card {
    position: relative;
    width: min(760px, 100%);
    max-height: calc(100vh - 36px);
    overflow: auto;
    background: #fff;
    border-radius: 12px;
    border: 1px solid var(--line);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}
.modal-head, .modal-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
}
.modal-foot {
    border-bottom: 0;
    border-top: 1px solid var(--line);
    justify-content: flex-end;
}
.modal-head h3 { margin: 0; font-size: 18px; }
.modal-body { padding: 16px; }
.detail-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 10px;
    padding: 7px 0;
    border-bottom: 1px solid #f0f2f6;
}
.detail-label { color: var(--muted); font-size: 13px; }
.detail-value { font-size: 14px; word-break: break-word; }
.detail-code { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.detail-section {
    margin: 16px 0 8px;
    font-size: 14px;
    font-weight: 600;
}
.detail-devices { margin-top: 4px; }
.detail-empty {
    margin-top: 12px;
    color: var(--muted);
    font-size: 13px;
}
.toast {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 1100;
    background: #102340;
    color: #fff;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}
.toast[hidden] { display: none !important; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.feat-group { margin-bottom: 18px; }
.feat-group h3 { margin: 0 0 8px; font-size: 14px; }
.feat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 6px 14px; }
.feat-item { display: flex; align-items: center; gap: 8px; margin: 0; color: var(--text); font-size: 14px; cursor: pointer; }
.row-actions { display: flex; gap: 8px; align-items: center; justify-content: flex-end; }
.row-actions form { margin: 0; }
.form-actions { display: flex; gap: 8px; margin-top: 16px; }
.empty { color: var(--muted); padding: 24px 8px; text-align: center; }
.pager { margin-top: 14px; }
.pager nav { display: flex; gap: 6px; flex-wrap: wrap; }
.pager a, .pager span { padding: 6px 10px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
@media (max-width: 800px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .login-card { width: 92%; }
    .detail-row { grid-template-columns: 1fr; gap: 4px; }
}

input[type=checkbox], input[type=radio] { accent-color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
table.data thead { background: #f0f5fd; }
table.data tbody tr:hover { background: #f8faff; }
.main-top { background: #f8fbff; }