/* portscope — practical, legible dashboard. */

:root {
  --bg: #f4f6fa;
  --bg-grad: radial-gradient(1200px 480px at 78% -10%, #eef1fb 0%, transparent 60%);
  --surface: #ffffff;
  --surface-2: #f3f5f9;
  --surface-3: #eef1f6;
  --border: #e5e8ef;
  --border-strong: #d3d8e3;
  --ink: #141923;
  --muted: #687388;
  --faint: #a6adbb;

  --brand: #5b5bf0;
  --brand-ink: #ffffff;

  --c-indigo: #5b5bf0;
  --c-blue: #2f7ef5;
  --c-violet: #8b5cf6;
  --c-slate: #64748b;
  --c-teal: #0ea5a3;
  --c-green: #11a866;
  --c-danger: #e23b46;
  --c-warn: #d68a04;

  --shadow-sm: 0 1px 2px rgba(20, 25, 35, 0.04), 0 1px 3px rgba(20, 25, 35, 0.06);
  --shadow-md: 0 4px 16px rgba(20, 25, 35, 0.07);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --radius: 12px;
  --radius-sm: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1016;
    --bg-grad: radial-gradient(1200px 480px at 78% -10%, #161a2b 0%, transparent 60%);
    --surface: #161b24;
    --surface-2: #1c222d;
    --surface-3: #222a37;
    --border: #262d39;
    --border-strong: #333c4b;
    --ink: #e7eaf1;
    --muted: #97a1b2;
    --faint: #5f6a7c;
    --brand: #7c7cff;
    --c-indigo: #8a8aff;
    --c-blue: #5fa0ff;
    --c-violet: #a78bfa;
    --c-slate: #93a0b4;
    --c-teal: #2dd4d0;
    --c-green: #36cf86;
    --c-danger: #ff6b73;
    --c-warn: #f0ad3c;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 6px 22px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }
/* author display rules (flex/grid) otherwise override the UA [hidden] rule */
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  background-image: var(--bg-grad);
  background-attachment: fixed;
  color: var(--ink);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app { max-width: 1360px; margin: 0 auto; padding: 0 20px; min-height: 100vh; display: flex; flex-direction: column; }
code { font-family: var(--mono); font-size: 0.92em; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding: 14px 0; margin-bottom: 4px;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(8px);
}
.brand { display: flex; align-items: center; gap: 11px; }
.logo {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px;
  color: #fff; background: linear-gradient(150deg, #6d6df7, #4f46e5); box-shadow: var(--shadow-sm);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 700; font-size: 1.06rem; letter-spacing: -0.01em; }
.brand-sub { font-size: 0.74rem; color: var(--muted); }

.badge {
  display: inline-flex; align-items: center; gap: 6px; margin-left: 6px;
  font-size: 0.74rem; font-weight: 600; padding: 4px 10px 4px 8px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: var(--surface); white-space: nowrap;
}
.badge-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--faint); flex: none; }
.badge.checking { color: var(--c-warn); border-color: color-mix(in srgb, var(--c-warn) 35%, var(--border)); }
.badge.checking .badge-dot { background: var(--c-warn); animation: pulse 1.1s ease-in-out infinite; }
.badge.online { color: var(--c-green); border-color: color-mix(in srgb, var(--c-green) 35%, var(--border)); background: color-mix(in srgb, var(--c-green) 9%, var(--surface)); }
.badge.online .badge-dot { background: var(--c-green); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-green) 22%, transparent); }
.badge.offline { color: var(--c-danger); border-color: color-mix(in srgb, var(--c-danger) 35%, var(--border)); background: color-mix(in srgb, var(--c-danger) 8%, var(--surface)); }
.badge.offline .badge-dot { background: var(--c-danger); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.port-form { display: flex; align-items: center; gap: 7px; padding: 4px 4px 4px 11px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 10px; box-shadow: var(--shadow-sm); }
.port-form label { color: var(--muted); font-size: 0.8rem; font-weight: 500; }
.port-form input { width: 76px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 7px; background: var(--surface-2); color: var(--ink); font: inherit; font-variant-numeric: tabular-nums; }
.port-form input:focus { outline: 2px solid color-mix(in srgb, var(--brand) 45%, transparent); outline-offset: 1px; border-color: var(--brand); }

.lang { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); padding-left: 9px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 10px; box-shadow: var(--shadow-sm); }
.lang svg { flex: none; opacity: 0.8; }
.lang select { border: none; background: none; color: var(--ink); font: inherit; font-weight: 600; padding: 8px 8px 8px 2px; cursor: pointer; }
.lang select:focus { outline: 2px solid color-mix(in srgb, var(--brand) 40%, transparent); border-radius: 6px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 13px; border: 1px solid var(--border-strong); border-radius: 9px;
  background: var(--surface); color: var(--ink); font: inherit; font-weight: 600; font-size: 0.85rem;
  cursor: pointer; white-space: nowrap; box-shadow: var(--shadow-sm); transition: border-color .12s, background .12s, transform .04s;
}
.btn:hover { border-color: var(--brand); background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: linear-gradient(150deg, #6d6df7, #4f46e5); color: var(--brand-ink); border-color: transparent; }
.btn.primary:hover { filter: brightness(1.07); background: linear-gradient(150deg, #6d6df7, #4f46e5); }
.icon-btn svg { opacity: 0.8; }

/* auto-refresh switch */
.switch { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; user-select: none; font-size: 0.84rem; font-weight: 600; color: var(--muted); }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch-track { width: 36px; height: 21px; border-radius: 999px; background: var(--border-strong); position: relative; transition: background .15s; flex: none; }
.switch-thumb { position: absolute; top: 2px; left: 2px; width: 17px; height: 17px; border-radius: 50%; background: #fff; box-shadow: var(--shadow-sm); transition: transform .15s; }
.switch input:checked + .switch-track { background: var(--c-green); }
.switch input:checked + .switch-track .switch-thumb { transform: translateX(15px); }
.switch input:focus-visible + .switch-track { outline: 2px solid color-mix(in srgb, var(--brand) 45%, transparent); outline-offset: 2px; }

.main { flex: 1; padding: 16px 0 28px; }

/* ---------- stat cards ---------- */
.stats { display: grid; gap: 12px; margin-bottom: 14px; grid-template-columns: repeat(6, minmax(0, 1fr)) 1.7fr; }
.stat {
  display: flex; align-items: center; gap: 12px; min-width: 0;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 13px 15px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.stat::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent, var(--brand)); opacity: .9; }
.stat[data-accent="indigo"] { --accent: var(--c-indigo); }
.stat[data-accent="blue"]   { --accent: var(--c-blue); }
.stat[data-accent="violet"] { --accent: var(--c-violet); }
.stat[data-accent="slate"]  { --accent: var(--c-slate); }
.stat[data-accent="teal"]   { --accent: var(--c-teal); }
.stat[data-accent="green"]  { --accent: var(--c-green); }
.stat[data-accent="danger"] { --accent: var(--c-danger); }
.stat-ic { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; flex: none; color: var(--accent, var(--brand)); background: color-mix(in srgb, var(--accent, var(--brand)) 13%, var(--surface)); }
.stat-body { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.stat-body.wide { width: 100%; }
.stat-label { color: var(--muted); font-size: 0.73rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap; }
.stat strong { font-size: 1.5rem; font-weight: 750; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; line-height: 1.1; }
.stat.free { grid-column: span 1; }
/* exposed card turns red only when there's something exposed */
.stat.is-exposed { background: color-mix(in srgb, var(--c-danger) 8%, var(--surface)); border-color: color-mix(in srgb, var(--c-danger) 30%, var(--border)); }
.stat.is-exposed strong { color: var(--c-danger); }
.stat.is-clear strong { color: var(--c-green); }

.free-ports { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 5px; }
.free-ports .fport { font-family: var(--mono); font-size: 0.82rem; font-weight: 600; color: var(--c-green); background: color-mix(in srgb, var(--c-green) 12%, var(--surface)); border: 1px solid color-mix(in srgb, var(--c-green) 26%, var(--border)); padding: 2px 8px; border-radius: 7px; }
.free-ports .none { color: var(--muted); }

/* ---------- exposed alert ---------- */
.alert {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
  padding: 11px 15px; border-radius: var(--radius-sm); font-weight: 500; font-size: 0.9rem;
  color: var(--c-danger);
  background: color-mix(in srgb, var(--c-danger) 9%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--c-danger) 28%, var(--border));
}
.alert svg { flex: none; }
.alert b { font-weight: 700; }

/* ---------- toolbar ---------- */
.table-toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.search-wrap { position: relative; flex: 1; min-width: 230px; }
.search-ic { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--faint); pointer-events: none; }
.search { width: 100%; padding: 10px 12px 10px 36px; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--surface); color: var(--ink); font: inherit; box-shadow: var(--shadow-sm); }
.search:focus { outline: 2px solid color-mix(in srgb, var(--brand) 40%, transparent); outline-offset: 1px; border-color: var(--brand); }
.filters { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filters select { padding: 9px 11px; border: 1px solid var(--border-strong); border-radius: 9px; background: var(--surface); color: var(--ink); font: inherit; font-weight: 500; cursor: pointer; box-shadow: var(--shadow-sm); }
.chk { display: flex; align-items: center; gap: 6px; color: var(--muted); cursor: pointer; user-select: none; font-weight: 500; }
.chk input { accent-color: var(--brand); width: 15px; height: 15px; }
.row-count { color: var(--muted); font-size: 0.82rem; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ---------- table ---------- */
.table-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
/* The table body scrolls within this pane (both axes) so the header can pin to
   the pane's top without fighting the page-level sticky topbar. */
.table-wrap { overflow: auto; max-height: calc(100vh - 250px); min-height: 180px; }
.ports-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 0.86rem; }
.ports-table th, .ports-table td { text-align: left; padding: 10px 14px; white-space: nowrap; border-bottom: 1px solid var(--border); }
.ports-table thead th {
  position: sticky; top: 0; z-index: 2;
  background: var(--surface-2); color: var(--muted);
  font-weight: 600; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-strong);
}
.ports-table th.sortable { cursor: pointer; user-select: none; }
.ports-table th.sortable:hover { color: var(--ink); }
.ports-table th.num, .ports-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.ports-table th .arrow { color: var(--brand); font-size: 0.9em; }
.ports-table tbody tr { transition: background .08s; }
.ports-table tbody tr:hover { background: color-mix(in srgb, var(--brand) 5%, transparent); }
.ports-table tbody tr:last-child td { border-bottom: none; }
.col-status { width: 30px; padding-right: 0 !important; }
.status-cell { padding-right: 0 !important; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--c-green); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-green) 16%, transparent); }
.dot.warn { background: var(--c-danger); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-danger) 18%, transparent); }

td.addr { font-family: var(--mono); font-size: 0.83rem; font-weight: 500; }
.mono-port { font-family: var(--mono); font-weight: 700; font-size: 0.86rem; }
td.proc { font-family: var(--mono); font-size: 0.82rem; }
td.cmd { max-width: 380px; overflow: hidden; text-overflow: ellipsis; color: var(--muted); font-family: var(--mono); font-size: 0.8rem; }
td.cid { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); }
.dash { color: var(--faint); }

/* exposed row accent */
tr.exposed td { background: color-mix(in srgb, var(--c-danger) 5%, transparent); }
tr.exposed:hover td { background: color-mix(in srgb, var(--c-danger) 9%, transparent); }
tr.exposed td.addr { color: var(--c-danger); font-weight: 700; }

/* scope + proto pills */
.pill { display: inline-flex; align-items: center; gap: 5px; font-size: 0.72rem; font-weight: 600; padding: 3px 9px; border-radius: 7px; line-height: 1.3; }
.pill.proto { font-family: var(--mono); font-weight: 700; background: var(--surface-3); color: var(--muted); letter-spacing: .02em; }
.pill.proto[data-p^="tcp"] { color: var(--c-blue); background: color-mix(in srgb, var(--c-blue) 12%, var(--surface)); }
.pill.proto[data-p^="udp"] { color: var(--c-violet); background: color-mix(in srgb, var(--c-violet) 13%, var(--surface)); }
.pill.scope-loopback { color: var(--c-green); background: color-mix(in srgb, var(--c-green) 13%, var(--surface)); }
.pill.scope-private  { color: var(--c-slate); background: color-mix(in srgb, var(--c-slate) 15%, var(--surface)); }
.pill.scope-all      { color: var(--c-danger); background: color-mix(in srgb, var(--c-danger) 13%, var(--surface)); }
.pill.scope-specific { color: var(--c-warn); background: color-mix(in srgb, var(--c-warn) 15%, var(--surface)); }
.pill.scope-multicast{ color: var(--c-violet); background: color-mix(in srgb, var(--c-violet) 13%, var(--surface)); }

.table-empty { padding: 36px; text-align: center; color: var(--muted); }
.footnote { color: var(--muted); font-size: 0.8rem; line-height: 1.5; margin: 12px 4px 0; }

/* ---------- setup view ---------- */
#setup { padding-top: 10px; }
.setup-head { max-width: 780px; margin-bottom: 26px; }
.eyebrow { display: inline-flex; align-items: center; gap: 7px; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.74rem; font-weight: 700; color: var(--c-danger); margin: 0 0 12px; padding: 5px 11px; border-radius: 999px; background: color-mix(in srgb, var(--c-danger) 9%, var(--surface)); border: 1px solid color-mix(in srgb, var(--c-danger) 25%, var(--border)); }
.eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.setup-head h1 { font-size: 1.75rem; line-height: 1.22; margin: 0 0 14px; letter-spacing: -0.02em; }
.lead { color: var(--muted); font-size: 1.02rem; line-height: 1.62; margin: 0 0 18px; }
.lead code, .lead strong { color: var(--ink); }
.lead code { background: var(--surface-3); padding: 1px 7px; border-radius: 6px; }
.button-row { display: flex; gap: 10px; flex-wrap: wrap; }

.setup-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-sm); }
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.card-badge { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; flex: none; font-size: 0.82rem; font-weight: 700; color: var(--brand); background: color-mix(in srgb, var(--brand) 13%, var(--surface)); }
.card-badge.step { color: #fff; background: linear-gradient(150deg, #6d6df7, #4f46e5); }
.card h2 { font-size: 1rem; margin: 0; }
.card .muted { color: var(--muted); margin: 0 0 12px; line-height: 1.55; }
.card .small { font-size: 0.84rem; margin-bottom: 0; }
/* inline code in prose only — must NOT match the <code> inside command <pre> */
.card p code { background: var(--surface-3); padding: 1px 6px; border-radius: 5px; }
.card .muted code, .card .small code { color: var(--ink); }
/* command-block code inherits the dark <pre> colours, never a light box */
.cmd pre code { background: none; padding: 0; border-radius: 0; color: inherit; }

.cmd { position: relative; }
.cmd pre { background: #0d1322; color: #d8e1f4; border-radius: 9px; padding: 13px 15px; margin: 0 0 8px; overflow-x: auto; font-family: var(--mono); font-size: 0.8rem; line-height: 1.55; border: 1px solid #1b2436; }
.cmd .copy { position: absolute; top: 8px; right: 8px; padding: 4px 10px; font-size: 0.73rem; font-weight: 600; border: 1px solid #2c3852; border-radius: 6px; background: #1a2336; color: #cfd9ec; cursor: pointer; transition: background .12s; }
.cmd .copy:hover { background: #26324a; }
.cmd .copy.done { color: var(--c-green); border-color: var(--c-green); }

/* ---------- footer ---------- */
.appfoot { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 16px 4px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.82rem; }
.muted { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1120px) {
  .stats { grid-template-columns: repeat(3, 1fr); }
  .stat.free { grid-column: span 3; }
}
@media (max-width: 620px) {
  .app { padding: 0 14px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat.free { grid-column: span 2; }
  .topbar { position: static; }
  .stat strong { font-size: 1.3rem; }
  .controls { width: 100%; }
}