:root {
    --bg: #101722;
    --panel: #172232;
    --panel-2: #1d2b3d;
    --text: #eef5ff;
    --muted: #9fb0c2;
    --line: #2c3d51;
    --blue: #1499e6;
    --maroon: #8b1e3f;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; }
.shell { display: flex; min-height: 100vh; }
.sidebar { width: 250px; background: #0d131d; border-right: 1px solid var(--line); padding: 20px; }
.brand { margin-bottom: 24px; }
.brand img { display: block; width: 100%; height: auto; background: transparent; border: 0; border-radius: 0; padding: 0; box-shadow: none; }
.sidebar nav { display: grid; gap: 2px; }
.nav-group { }
.nav-label { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .09em; padding: 14px 12px 4px; opacity: .6; cursor: default; transition: opacity .15s; }
.nav-label::after { content: '›'; font-size: 15px; font-weight: 400; transition: transform .2s ease; }
.nav-group:hover .nav-label { opacity: 1; }
.nav-group:hover .nav-label::after { transform: rotate(90deg); }
.nav-items { display: grid; gap: 2px; overflow: hidden; max-height: 0; transition: max-height .25s ease; }
.nav-group:hover .nav-items,
.nav-group.active .nav-items { max-height: 400px; }
.nav-group.active .nav-label { opacity: 1; }
.nav-group.active .nav-label::after { transform: rotate(90deg); }
.nav-settings { margin-top: 8px; }
.sidebar a { display: block; border-radius: 6px; padding: 11px 12px; text-decoration: none; color: var(--muted); }
.sidebar a:hover { background: var(--panel-2); color: var(--text); }
.sidebar a.current { background: rgba(20, 153, 230, .13); color: var(--blue); font-weight: 600; }
.main { flex: 1; padding: 24px; }
.topbar { display: flex; justify-content: space-between; align-items: center; background: #fff; color: #182231; border-radius: 8px; padding: 14px 18px; margin-bottom: 20px; }
.topbar span { display: block; color: #657386; font-size: 13px; margin-top: 2px; }
.metric-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.metric-grid article, .panel, .auth-panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 18px 50px rgba(0, 0, 0, .18); }
.metric-grid article { padding: 17px; }
.metric-grid span { color: var(--muted); font-size: 13px; }
.metric-grid strong { display: block; font-size: 26px; margin-top: 6px; }
.report-metrics { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.watch-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.watch-grid article { min-width: 0; }
.panel { padding: 18px; }
.panel-head { display: flex; gap: 12px; justify-content: space-between; align-items: center; }
h1, h2 { margin: 0 0 14px; }
h3 { margin: 0; font-size: 15px; }
table { width: 100%; border-collapse: collapse; margin-top: 16px; }
th, td { border-bottom: 1px solid var(--line); padding: 11px 8px; text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; }
input, select, textarea, button { border: 1px solid var(--line); border-radius: 6px; font: inherit; }
input, select, textarea { min-width: 0; background: #0f1824; color: var(--text); padding: 10px 11px; }
textarea { min-height: 42px; resize: vertical; }
button { background: var(--blue); color: #fff; padding: 10px 14px; cursor: pointer; font-weight: 700; }
.button-link { display: inline-flex; align-items: center; justify-content: center; background: var(--blue); color: #fff; border-radius: 6px; padding: 9px 12px; text-decoration: none; font-weight: 700; border: 1px solid var(--blue); }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.actions form { margin: 0; }
.danger { background: var(--maroon); border-color: var(--maroon); }
.ghost { background: transparent; color: var(--maroon); border-color: var(--maroon); }
.grid-form { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 10px; align-items: start; margin: 10px 0 18px; }
.grid-form.wide { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-form textarea { grid-column: span 4; }
.settings-form { display: grid; gap: 18px; max-width: 980px; }
.settings-form fieldset { border: 1px solid var(--line); border-radius: 8px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 16px; }
.settings-form legend { color: var(--muted); padding: 0 8px; }
.settings-form label { display: grid; gap: 6px; color: var(--muted); }
.details { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0 0 14px; }
.details div { background: #0f1824; border: 1px solid var(--line); border-radius: 6px; padding: 10px; }
.details dt { color: var(--muted); font-size: 12px; text-transform: uppercase; }
.details dd { margin: 4px 0 0; }
.description { color: var(--muted); white-space: pre-wrap; }
.thread { display: grid; gap: 12px; margin: 12px 0 18px; }
.reply { background: #0f1824; border: 1px solid var(--line); border-radius: 8px; padding: 14px; }
.reply.internal { border-color: var(--maroon); }
.reply header { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); margin-bottom: 8px; }
.reply p { margin: 0; white-space: pre-wrap; }
.reply-form { max-width: 760px; }
.line-item-form { grid-template-columns: minmax(220px, 3fr) repeat(2, minmax(120px, 1fr)) auto; }
.payment-form { grid-template-columns: repeat(2, minmax(140px, 1fr)) minmax(120px, 1fr) minmax(140px, 1fr) auto; }
.totals { display: grid; gap: 8px; margin: 16px 0 0 auto; max-width: 360px; }
.totals div { display: flex; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--line); padding: 8px 0; }
.totals dt { color: var(--muted); }
.totals dd { margin: 0; font-weight: 700; }
.timeline { display: grid; gap: 10px; }
.timeline article { display: grid; grid-template-columns: 90px minmax(160px, 1.4fr) minmax(180px, 2fr) minmax(140px, auto); gap: 12px; align-items: center; background: #0f1824; border: 1px solid var(--line); border-radius: 8px; padding: 12px; }
.timeline span, .timeline p, .timeline time { color: var(--muted); }
.timeline p { margin: 0; }
.inline { display: flex; gap: 8px; }
.notice { background: rgba(61, 220, 151, .12); border: 1px solid rgba(61, 220, 151, .35); border-radius: 8px; margin-bottom: 16px; padding: 12px 14px; }
.notice.error { background: rgba(139, 30, 63, .18); border-color: rgba(139, 30, 63, .55); }
.modal { width: min(920px, calc(100vw - 32px)); border: 0; border-radius: 8px; padding: 0; background: transparent; color: var(--text); }
.modal::backdrop { background: rgba(0, 0, 0, .62); }
.modal-card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 18px; box-shadow: 0 24px 80px rgba(0, 0, 0, .45); }
.guide-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 16px; margin-top: 16px; }
.guide-nav { display: grid; gap: 8px; align-content: start; }
.guide-nav button { background: #0f1824; color: var(--muted); border-color: var(--line); text-align: left; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.badge { background: var(--panel-2); border: 1px solid var(--line); border-radius: 9px; font-size: 11px; font-weight: 600; padding: 1px 7px; color: var(--muted); flex-shrink: 0; }
.inline-tab-link { background: none; border: none; color: inherit; font: inherit; font-weight: 700; text-decoration: underline; cursor: pointer; padding: 0; }
.guide-nav button.active { background: var(--blue); color: #fff; border-color: var(--blue); }
.guide-section { display: none; background: #0f1824; border: 1px solid var(--line); border-radius: 8px; padding: 16px; }
.guide-section.active { display: block; }
.guide-section ol { margin: 12px 0 0; padding-left: 22px; color: var(--muted); }
.guide-section li { margin: 0 0 10px; }
.settings-status { display: grid; gap: 4px; grid-column: 1 / -1; background: rgba(61, 220, 151, .12); border: 1px solid rgba(61, 220, 151, .35); border-radius: 8px; padding: 12px; }
.settings-status.warning { background: rgba(250, 204, 21, .12); border-color: rgba(250, 204, 21, .4); }
.settings-status.error { background: rgba(139, 30, 63, .18); border-color: rgba(139, 30, 63, .55); }
.settings-status span, .settings-status small { color: var(--muted); }
.auth-panel { width: min(430px, calc(100vw - 32px)); margin: 9vh auto; padding: 28px; }
.auth-panel img { width: 260px; max-height: 170px; object-fit: contain; display: block; background: transparent; border: 0; border-radius: 0; padding: 0; box-shadow: none; margin: 0 auto 18px; }
.stack { display: grid; gap: 14px; }
.stack label { display: grid; gap: 6px; color: var(--muted); }
.check { display: flex !important; grid-template-columns: auto 1fr; align-items: center; }
.compact { min-height: 42px; align-items: center; color: var(--muted); }
nav[role="navigation"] { margin-top: 14px; }
@media (max-width: 1100px) {
    .metric-grid, .report-metrics, .watch-grid, .two-col, .grid-form, .grid-form.wide, .line-item-form, .payment-form, .timeline article, .settings-form fieldset, .details { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
    .shell, .topbar, .panel-head { display: block; }
    .sidebar { width: 100%; border-right: 0; border-bottom: 1px solid var(--line); }
    .main { padding: 16px; }
    .metric-grid, .report-metrics, .watch-grid, .two-col, .grid-form, .grid-form.wide, .line-item-form, .payment-form, .timeline article, .inline, .settings-form fieldset, .details { grid-template-columns: 1fr; display: grid; }
    .guide-layout { grid-template-columns: 1fr; }
    .grid-form textarea { grid-column: auto; }
}