:root {
    --bg: #f4f6f9;
    --panel: #ffffff;
    --border: #dfe3ea;
    --text: #1f2430;
    --muted: #6b7280;
    --accent: #2563eb;
    --accent-dark: #1d4ed8;
    --danger: #dc2626;
    --sidebar: #111827;
    --sidebar-text: #d1d5db;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.shell { display: flex; min-height: 100vh; }

.sidebar {
    width: 220px;
    flex: 0 0 220px;
    background: var(--sidebar);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}
.brand { padding: 18px 20px; font-size: 18px; font-weight: 600; color: #fff; border-bottom: 1px solid #1f2937; }
.brand span { display: block; font-size: 11px; font-weight: 400; color: #9ca3af; letter-spacing: .08em; text-transform: uppercase; }
.sidebar nav { display: flex; flex-direction: column; padding: 12px 0; }
.sidebar nav a { color: var(--sidebar-text); padding: 10px 20px; display: block; }
.sidebar nav a:hover { background: #1f2937; text-decoration: none; color: #fff; }
.sidebar nav a.active { background: var(--accent); color: #fff; }
.sidebar-footer { margin-top: auto; padding: 16px 20px; border-top: 1px solid #1f2937; }
.sidebar-footer a { color: #9ca3af; }

.content { flex: 1; padding: 24px 28px; min-width: 0; }

h1 { font-size: 22px; margin: 0 0 16px; font-weight: 600; }
h2 { font-size: 16px; margin: 20px 0 10px; font-weight: 600; }
.muted { color: var(--muted); }
.mono { font-family: Consolas, "Cascadia Mono", monospace; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; }
.card .label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.card .value { font-size: 22px; font-weight: 600; margin-top: 4px; word-break: break-word; }
.card .value.small { font-size: 14px; font-weight: 400; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; margin-bottom: 16px; }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar .spacer { flex: 1; }

input[type=text], input[type=password], input[type=number], select, textarea {
    font: inherit;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    color: var(--text);
}
input[type=text]:focus, select:focus, textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--accent); }
textarea.sql { width: 100%; min-height: 160px; font-family: Consolas, "Cascadia Mono", monospace; font-size: 13px; resize: vertical; }

.btn {
    font: inherit;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    cursor: pointer;
}
.btn:hover { background: #f3f4f6; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); }
.btn.danger { color: var(--danger); border-color: #fca5a5; }
.btn.danger:hover { background: #fef2f2; }
.btn.small { padding: 3px 8px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }

.grid-wrap { overflow: auto; border: 1px solid var(--border); border-radius: 8px; background: var(--panel); max-height: calc(100vh - 260px); }
table.grid { border-collapse: separate; border-spacing: 0; width: 100%; font-size: 13px; }
table.grid th, table.grid td { padding: 6px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; max-width: 360px; overflow: hidden; text-overflow: ellipsis; text-align: left; }
table.grid th { position: sticky; top: 0; background: #f9fafb; font-weight: 600; cursor: pointer; user-select: none; z-index: 1; }
table.grid th.nosort { cursor: default; }
table.grid th .type { display: block; font-size: 10px; color: var(--muted); font-weight: 400; }
table.grid tr:hover td { background: #f8fafc; }
table.grid td.null { color: #9ca3af; font-style: italic; }
table.grid td.actions { white-space: nowrap; }
table.grid td.num { text-align: right; font-variant-numeric: tabular-nums; }
.pk { color: #b45309; }

.pager { display: flex; gap: 8px; align-items: center; margin-top: 10px; flex-wrap: wrap; }

.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { background: #e0e7ff; color: #3730a3; border-radius: 999px; padding: 3px 10px; font-size: 12px; display: inline-flex; gap: 6px; align-items: center; }
.chip button { border: 0; background: transparent; cursor: pointer; color: inherit; font-size: 13px; padding: 0; }

.alert { padding: 10px 12px; border-radius: 6px; margin-bottom: 12px; }
.alert.error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; white-space: pre-wrap; }
.alert.ok { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert.info { background: #eff6ff; color: #1e3a8a; border: 1px solid #bfdbfe; }

.modal-backdrop { position: fixed; inset: 0; background: rgba(17, 24, 39, .45); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal { background: #fff; border-radius: 10px; width: min(760px, 95vw); max-height: 90vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.modal header { padding: 14px 18px; border-bottom: 1px solid var(--border); font-weight: 600; }
.modal .body { padding: 14px 18px; overflow: auto; }
.modal footer { padding: 12px 18px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }
.field { display: grid; grid-template-columns: 220px 1fr 70px; gap: 8px; align-items: center; padding: 4px 0; }
.field label { font-size: 13px; }
.field label small { display: block; color: var(--muted); font-size: 11px; }
.field input[type=text], .field select, .field textarea { width: 100%; }
.field .null { font-size: 12px; color: var(--muted); display: flex; gap: 4px; align-items: center; }

.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 28px; width: 340px; }
.login h1 { margin-bottom: 18px; }
.login label { display: block; margin: 10px 0 4px; font-size: 13px; }
.login input { width: 100%; }
.login .btn { width: 100%; margin-top: 16px; }

.list-search { width: 320px; }

#blazor-error-ui { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: #fff7ed; border-top: 1px solid #fdba74; padding: 10px 20px; z-index: 100; }
#blazor-error-ui .dismiss { cursor: pointer; float: right; }

/* ---- ribbon layout (modelled on the legacy management program) ---- */
.app { display: flex; flex-direction: column; min-height: 100vh; width: 100%; min-width: 0; }
.ribbon { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.ribbon-tabs { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; padding: 6px 12px 0; background: linear-gradient(180deg, #1f2937, #111827); }
.ribbon-tabs .brand { color: #fff; font-weight: 600; padding: 4px 14px 8px 0; font-size: 15px; display: flex; align-items: center; gap: 6px; }
.ribbon-tabs .tab { font: inherit; border: 0; background: transparent; color: #d1d5db; padding: 7px 14px; cursor: pointer; border-radius: 8px 8px 0 0; display: flex; align-items: center; gap: 6px; }
.ribbon-tabs .tab-ico { font-size: 14px; }
.ribbon-tabs .tab:hover { background: #374151; color: #fff; }
.ribbon-tabs .tab.active { background: #fff; color: var(--c, var(--text)); font-weight: 600; box-shadow: inset 0 3px 0 var(--c, var(--accent)); }
.ribbon-tabs .spacer { flex: 1; }
.ribbon-tabs .logout { color: #9ca3af; padding: 6px 4px; font-size: 13px; }
.ribbon-tabs .logout:hover { color: #fff; text-decoration: none; }
.ribbon-buttons { display: flex; flex-wrap: wrap; gap: 2px; padding: 6px 10px; background: linear-gradient(180deg, #ffffff, #f3f4f6); }
.ribbon-buttons a.rb { display: flex; flex-direction: column; align-items: center; justify-content: center; min-width: 96px; padding: 6px 10px 5px; border: 1px solid transparent; border-radius: 8px; color: var(--text); text-align: center; line-height: 1.15; }
.ribbon-buttons a.rb .ico { font-size: 22px; line-height: 1; width: 42px; height: 42px; display: flex; align-items: center; justify-content: center; border-radius: 12px; margin-bottom: 4px; background: color-mix(in srgb, var(--c, #2563EB) 16%, #fff); border: 1px solid color-mix(in srgb, var(--c, #2563EB) 40%, #fff); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.ribbon-buttons a.rb:hover .ico { background: color-mix(in srgb, var(--c, #2563EB) 26%, #fff); }
.ribbon-buttons a.rb.active .ico { background: color-mix(in srgb, var(--c, #2563EB) 32%, #fff); border-color: var(--c, #2563EB); }
.ribbon-buttons a.rb .cap { font-size: 12px; max-width: 120px; }
.ribbon-buttons a.rb:hover { background: color-mix(in srgb, var(--c, #2563EB) 8%, #fff); border-color: color-mix(in srgb, var(--c, #2563EB) 35%, #fff); text-decoration: none; }
.ribbon-buttons a.rb.active { background: color-mix(in srgb, var(--c, #2563EB) 12%, #fff); border-color: color-mix(in srgb, var(--c, #2563EB) 45%, #fff); font-weight: 600; color: var(--c, var(--text)); }
.content { padding: 14px 20px 20px; }

.screen-head { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.screen-head h1 { margin: 0; display: flex; align-items: center; gap: 10px; }
.screen-head .head-ico { font-size: 22px; width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; background: color-mix(in srgb, var(--c, #2563EB) 16%, #fff); border: 1px solid color-mix(in srgb, var(--c, #2563EB) 40%, #fff); }
.screen-head small { font-size: 13px; font-weight: 400; }
.filters-panel { padding: 10px 14px; }
.filters { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 6px 14px; }
.filter { display: flex; flex-direction: column; gap: 2px; font-size: 12px; color: var(--muted); }
.filter input, .filter select { width: 100%; font-size: 13px; }
.screen-grid { max-height: calc(100vh - 340px); }
table.grid tbody tr:nth-child(even) td { background: #fafbfd; }
table.grid th { background: linear-gradient(180deg, #f9fafb, #eef0f4); border-bottom: 2px solid #d1d5db; }
table.grid tr:hover td { background: #f1f5f9; }
table.grid tr.selected td, table.grid tr.selected:hover td { background: #dbeafe; }
table.grid td.center { text-align: center; }
table.grid th.num, table.grid td.num.muted { width: 40px; }
.pager .spacer { flex: 1; }
.login-ico { font-size: 40px; text-align: center; }

.subpanel { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 10px 14px; }
.subpanel label { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; }
.danger-panel { border-color: #fecaca; background: #fff7f7; }
ul.related { margin: 6px 0 8px 18px; padding: 0; columns: 2; font-size: 13px; }
ul.related li { margin: 1px 0; }

/* ---- preferences (language / theme) ---- */
.ribbon-tabs .pref { font: inherit; font-size: 12px; padding: 4px 6px; border-radius: 6px; border: 1px solid #374151; background: #1f2937; color: #e5e7eb; margin-right: 4px; }
.ribbon-tabs .pref-btn { font: inherit; font-size: 12px; padding: 4px 10px; border-radius: 6px; border: 1px solid #374151; background: #1f2937; color: #e5e7eb; cursor: pointer; margin-right: 8px; }
.ribbon-tabs .pref-btn:hover { background: #374151; }

/* ---- dark theme ---- */
[data-theme="dark"] {
    --bg: #0f172a;
    --panel: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #60a5fa;
    --accent-dark: #3b82f6;
    --danger: #f87171;
}
[data-theme="dark"] body { background: var(--bg); color: var(--text); }
[data-theme="dark"] .ribbon { background: #1e293b; border-color: var(--border); box-shadow: 0 1px 3px rgba(0,0,0,.4); }
[data-theme="dark"] .ribbon-tabs { background: linear-gradient(180deg, #0b1220, #0f172a); }
[data-theme="dark"] .ribbon-tabs .tab.active { background: #1e293b; }
[data-theme="dark"] .ribbon-buttons { background: linear-gradient(180deg, #1e293b, #172033); }
[data-theme="dark"] .ribbon-buttons a.rb { color: var(--text); }
[data-theme="dark"] .ribbon-buttons a.rb .ico { background: color-mix(in srgb, var(--c, #2563EB) 30%, #1e293b); border-color: color-mix(in srgb, var(--c, #2563EB) 55%, #1e293b); }
[data-theme="dark"] .ribbon-buttons a.rb:hover { background: color-mix(in srgb, var(--c, #2563EB) 18%, #1e293b); border-color: color-mix(in srgb, var(--c, #2563EB) 45%, #1e293b); }
[data-theme="dark"] .ribbon-buttons a.rb.active { background: color-mix(in srgb, var(--c, #2563EB) 26%, #1e293b); border-color: color-mix(in srgb, var(--c, #2563EB) 60%, #1e293b); color: #fff; }
[data-theme="dark"] .screen-head .head-ico { background: color-mix(in srgb, var(--c, #2563EB) 30%, #1e293b); border-color: color-mix(in srgb, var(--c, #2563EB) 55%, #1e293b); }
[data-theme="dark"] .panel, [data-theme="dark"] .card, [data-theme="dark"] .grid-wrap, [data-theme="dark"] .login, [data-theme="dark"] .modal { background: var(--panel); border-color: var(--border); color: var(--text); }
[data-theme="dark"] input[type=text], [data-theme="dark"] input[type=password], [data-theme="dark"] input[type=number], [data-theme="dark"] input[type=date], [data-theme="dark"] select, [data-theme="dark"] textarea { background: #0f172a; color: var(--text); border-color: var(--border); color-scheme: dark; }
[data-theme="dark"] .btn { background: #273449; color: var(--text); border-color: var(--border); }
[data-theme="dark"] .btn:hover { background: #334155; }
[data-theme="dark"] .btn.primary { background: #2563eb; border-color: #2563eb; color: #fff; }
[data-theme="dark"] .btn.primary:hover { background: #1d4ed8; }
[data-theme="dark"] .btn.danger { color: #fca5a5; border-color: #7f1d1d; }
[data-theme="dark"] .btn.danger:hover { background: #3f1d1d; }
[data-theme="dark"] table.grid th { background: linear-gradient(180deg, #273449, #1e293b); border-bottom-color: #475569; color: var(--text); }
[data-theme="dark"] table.grid td { border-bottom-color: var(--border); }
[data-theme="dark"] table.grid tbody tr:nth-child(even) td { background: #1a2537; }
[data-theme="dark"] table.grid tr:hover td { background: #273449; }
[data-theme="dark"] table.grid tr.selected td, [data-theme="dark"] table.grid tr.selected:hover td { background: #1e3a8a; }
[data-theme="dark"] table.grid td.null { color: #64748b; }
[data-theme="dark"] .alert.error { background: #3f1d1d; color: #fecaca; border-color: #7f1d1d; }
[data-theme="dark"] .alert.ok { background: #14342b; color: #a7f3d0; border-color: #065f46; }
[data-theme="dark"] .alert.info { background: #172554; color: #bfdbfe; border-color: #1e40af; }
[data-theme="dark"] .danger-panel { background: #2a1515; border-color: #7f1d1d; }
[data-theme="dark"] .chip { background: #312e81; color: #c7d2fe; }
[data-theme="dark"] .modal header, [data-theme="dark"] .modal footer { border-color: var(--border); }
[data-theme="dark"] .modal-backdrop { background: rgba(0,0,0,.6); }
[data-theme="dark"] #blazor-error-ui { background: #3b2a12; border-color: #b45309; color: var(--text); }
[data-theme="dark"] a { color: #93c5fd; }

/* ---- context menu ---- */
.ctx-backdrop { position: fixed; inset: 0; z-index: 60; }
.ctx { position: fixed; z-index: 61; min-width: 230px; max-height: 80vh; overflow: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 12px 32px rgba(0,0,0,.25); padding: 4px; }
.ctx .ctx-title { font-size: 11px; color: var(--muted); padding: 4px 10px 6px; border-bottom: 1px solid var(--border); margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ctx .ctx-group { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; padding: 6px 10px 2px; }
.ctx button { display: block; width: 100%; text-align: left; font: inherit; font-size: 13px; padding: 6px 10px; border: 0; background: transparent; color: var(--text); border-radius: 5px; cursor: pointer; }
.ctx button.sub { padding-left: 22px; }
.ctx button:hover { background: color-mix(in srgb, var(--accent) 14%, var(--panel)); }
.ctx button.danger { color: var(--danger); }
.ctx .ctx-sep { height: 1px; background: var(--border); margin: 4px 0; }

/* maintenance page */
.kv { border-collapse: collapse; margin: 6px 0 10px; }
.kv th { text-align: left; padding: 4px 14px 4px 0; color: var(--muted); font-weight: 500; white-space: nowrap; }
.kv td { padding: 4px 0; }
span.ok { color: #047857; }
span.error { color: #b91c1c; white-space: pre-wrap; }
[data-theme="dark"] span.ok { color: #6ee7b7; }
[data-theme="dark"] span.error { color: #fca5a5; }
.business-toolbar { display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin:12px 0; padding:12px; }
.selection-count { font-weight:600; padding:6px 10px; border-radius:6px; background:var(--bg); }
.command-dialog { width:min(680px,95vw); }
.command-field { display:flex; flex-direction:column; gap:6px; margin:16px 0; }
.command-field input, .command-field textarea, .command-field select { width:100%; padding:9px 12px; }
.command-output textarea { display:block; width:100%; margin-bottom:12px; font-family:monospace; }
.grid tr.row-disabled td { color:var(--muted); background:color-mix(in srgb,var(--danger) 8%,var(--panel)); }
.grid tr.row-pending td { background:color-mix(in srgb,#f59e0b 9%,var(--panel)); }
.grid th:first-child, .grid td:first-child { position:sticky; left:0; background:var(--panel); z-index:1; }
.ctx { max-height:80vh; overflow:auto; }
.ctx { max-width:calc(100vw - 16px); overscroll-behavior:contain; }
.ctx button,.ctx a { white-space:normal; overflow-wrap:anywhere; }
.ctx [role=menuitem]:focus-visible { outline:2px solid var(--accent); outline-offset:-2px; background:var(--ring); }
.ctx a { display:block; padding:6px 12px; }