/* Application shell: persistent navigation, command bar, model intake. */
:root {
  --topbar-h: 52px;
  --rail-w: 220px;
  --filterbar-h: 52px;
  --inspector-w: 420px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --brand: #5b5bd6;
  --brand-2: #6e6ee8;
  --sev-critical: #d92d49;
  --sev-high: #df6b24;
  --sev-medium: #b58512;
  --sev-low: #168567;
  --sev-info: #64748b;
}

body[data-theme="dark"] {
  --bg: #111318;
  --bg-2: #17191f;
  --bg-3: #1d2027;
  --bg-hover: #242832;
  --bg-active: #2a2f3a;
  --border: #2a2e38;
  --border-strong: #3b414e;
  --text: #f1f3f7;
  --text-2: #b0b6c2;
  --text-3: #7e8796;
  --shadow: 0 16px 40px rgba(0, 0, 0, .32);
  --shadow-sm: 0 3px 12px rgba(0, 0, 0, .2);
}

body[data-theme="light"] {
  --bg: #f4f5f7;
  --bg-2: #fff;
  --bg-3: #f7f8fa;
  --bg-hover: #f0f1f4;
  --bg-active: #e8eaf0;
  --border: #e2e4e9;
  --border-strong: #c8ccd5;
  --text: #20242c;
  --text-2: #5d6470;
  --text-3: #858d99;
  --shadow: 0 16px 40px rgba(28, 33, 45, .12);
  --shadow-sm: 0 3px 12px rgba(28, 33, 45, .07);
}

html,
body { font-size: 13px; letter-spacing: 0; }

body {
  grid-template-columns: var(--rail-w) 1fr;
  background: var(--bg);
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--brand-2);
  outline-offset: 2px;
}
button:disabled { cursor: default; opacity: .45; }

.topbar {
  gap: 10px;
  padding: 0 12px 0 0;
  background: var(--bg-2);
}

.brand {
  width: var(--rail-w);
  height: 100%;
  flex: 0 0 var(--rail-w);
  gap: 10px;
  padding: 0 16px;
  border-right: 1px solid var(--border);
  font-size: 13px;
  letter-spacing: -.01em;
  text-align: left;
}
.brand svg { color: var(--brand-2); flex: 0 0 auto; }
.brand-name { overflow: hidden; text-overflow: ellipsis; }

.project-tag {
  gap: 8px;
  padding: 0 10px;
  border: 0;
  background: transparent;
}
.project-tag-name { max-width: 220px; font-size: 12.5px; }
.project-tag-meta { color: var(--text-3); font-size: 10.5px; }

.kpi-strip { gap: 1px; }
.kpi {
  gap: 4px;
  padding: 3px 7px;
  border: 0;
  background: transparent;
}
.kpi-num { font-size: 12px; }
.kpi-label { font-size: 8.5px; }
.kpi.sev-critical-bg,
.kpi.sev-high-bg { border: 0; background: transparent; }
.review-status {
  height: 26px;
  padding: 0 8px;
  border: 1px solid rgba(223, 107, 36, .34);
  border-radius: 5px;
  background: rgba(223, 107, 36, .08);
  color: var(--sev-high);
  font-size: 10px;
  font-weight: 650;
}

.topbar-actions { gap: 5px; }
.cmdk-trigger,
.btn,
.icon-btn { height: 32px; }
.btn { padding: 0 11px; border-radius: 6px; font-size: 12px; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn-primary:hover { background: #4d4dc5; border-color: #4d4dc5; }
.icon-btn { width: 32px; }
.cmdk-trigger { height: 32px; min-width: 150px; }

.dropdown-menu {
  margin-top: 5px;
  padding: 7px;
  border-radius: 8px;
  background: var(--bg-2);
  box-shadow: var(--shadow);
}
.dropdown-menu.wide { min-width: 480px; }

.rail {
  padding: 12px 10px;
  gap: 2px;
  background: var(--bg-2);
}
.rail-section-label {
  display: block;
  padding: 10px 10px 6px;
  color: var(--text-3);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.rail-section-inventory { margin-top: 10px; }
.rail-btn {
  position: relative;
  flex-direction: row;
  justify-content: flex-start;
  gap: 10px;
  min-height: 38px;
  padding: 0 10px;
  border-radius: 6px;
}
.rail-btn svg { width: 16px; height: 16px; color: var(--text-3); }
.rail-label { font-size: 12.5px; font-weight: 500; letter-spacing: 0; text-transform: none; }
.rail-btn .rail-badge { position: static; margin-left: auto; }
.rail-badge[hidden] { display: none; }
body[data-has-otm="false"] .rail-btn { opacity: .42; pointer-events: none; }
body[data-view="overview"] .rail-btn[data-view="overview"],
body[data-view="diagram"] .rail-btn[data-view="diagram"],
body[data-view="threats"] .rail-btn[data-view="threats"],
body[data-view="components"] .rail-btn[data-view="components"],
body[data-view="flows"] .rail-btn[data-view="flows"],
body[data-view="mitigations"] .rail-btn[data-view="mitigations"] {
  background: color-mix(in srgb, var(--brand) 11%, var(--bg-2));
  color: var(--text);
  box-shadow: inset 2px 0 var(--brand);
}
body[data-view="source"] .rail-btn[data-view="source"] {
  background: color-mix(in srgb, var(--brand) 11%, var(--bg-2));
  color: var(--text);
  box-shadow: inset 2px 0 var(--brand);
}
body[data-view] .rail-btn[aria-current="page"] svg { color: var(--brand-2); }

.workspace { background: var(--bg); }
.empty-state { align-items: stretch; overflow: auto; padding: 28px; }
.intake-shell { width: min(1120px, 100%); margin: 0 auto; }
.intake-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  padding: 18px 0 22px;
}
.section-label {
  color: var(--text-3);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.intake-head h1 { margin: 5px 0 4px; font-size: 24px; letter-spacing: -.025em; }
.intake-head p,
.source-panel-head p { margin: 0; color: var(--text-2); }
.runtime-status { color: var(--text-3); font-size: 11px; white-space: nowrap; }
.runtime-status > span { display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: var(--sev-low); }

.intake-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px; }
.editor-panel,
.source-panel { border: 1px solid var(--border); border-radius: 10px; background: var(--bg-2); box-shadow: var(--shadow-sm); }
.editor-panel { min-height: min(570px, calc(100vh - 160px)); display: grid; grid-template-rows: 44px 1fr 58px; overflow: hidden; }
.editor-toolbar,
.editor-footer { display: flex; align-items: center; justify-content: space-between; padding: 0 14px; }
.editor-toolbar { border-bottom: 1px solid var(--border); color: var(--text-3); font-size: 10.5px; }
.editor-toolbar > div { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 12px; }
.file-mark { color: var(--brand-2); font: 11px var(--font-mono); }
#empty-paste-textarea { width: 100%; min-height: 410px; padding: 18px; resize: none; border: 0; outline: 0; background: color-mix(in srgb, var(--bg) 62%, var(--bg-2)); color: var(--text); font: 12px/1.65 var(--font-mono); caret-color: var(--brand-2); }
.editor-footer { gap: 16px; border-top: 1px solid var(--border); }
.paste-status { color: var(--text-3); font-size: 10.5px; }
.paste-status.error { color: var(--sev-critical); }
.paste-status.success { color: var(--sev-low); }

.source-panel { align-self: start; padding: 18px; }
.source-panel-head { margin-bottom: 16px; }
.source-panel-head p { margin-top: 6px; font-size: 11.5px; line-height: 1.5; }
.intake-state { display: grid; grid-template-columns: 9px 1fr; gap: 9px; padding: 11px 0 14px; border-top: 1px solid var(--border); }
.intake-state > span { width: 8px; height: 8px; margin-top: 4px; border-radius: 50%; background: var(--text-3); }
.intake-state > div { display: grid; gap: 2px; }
.intake-state strong { font-size: 11.5px; }
.intake-state small { color: var(--text-3); font-size: 10.5px; line-height: 1.4; }
.intake-state.ready > span { background: var(--sev-low); }
.intake-state.invalid > span { background: var(--sev-critical); }
.intake-state.ready strong { color: var(--sev-low); }
.intake-state.invalid strong { color: var(--sev-critical); }
.intake-summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
.intake-summary span { display: grid; gap: 1px; padding: 7px 4px; border: 1px solid var(--border); border-radius: 5px; background: var(--bg-3); text-align: center; color: var(--text-3); font-size: 8px; text-transform: uppercase; }
.intake-summary strong { color: var(--text); font-size: 13px; }
.intake-issues { list-style: none; margin: 11px 0 0; padding: 0; }
.intake-issue { display: grid; grid-template-columns: 6px 1fr; gap: 8px; padding: 7px 0; border-top: 1px solid var(--border); }
.intake-issue > span { width: 5px; height: 5px; margin-top: 5px; border-radius: 50%; background: var(--text-3); }
.intake-issue.blocker > span { background: var(--sev-critical); }
.intake-issue.warning > span { background: var(--sev-high); }
.intake-issue > div { display: grid; gap: 1px; }
.intake-issue strong { font-size: 10.5px; }
.intake-issue small,
.intake-clear { color: var(--text-3); font-size: 9.5px; line-height: 1.4; }
.source-separator { display: flex; align-items: center; gap: 8px; margin-top: 15px; color: var(--text-3); font-size: 8.5px; letter-spacing: .08em; text-transform: uppercase; }
.source-separator::before,
.source-separator::after { content: ""; height: 1px; flex: 1; background: var(--border); }
.source-action { width: 100%; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 10px; padding: 11px 8px; border-top: 1px solid var(--border); text-align: left; }
.source-action:hover { background: var(--bg-hover); }
.source-action > span:nth-child(2) { display: grid; gap: 2px; }
.source-action small { color: var(--text-3); font-size: 10.5px; }
.source-icon { display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid var(--border); border-radius: 6px; color: var(--brand-2); background: var(--bg-3); }
.intake-facts { margin: 20px 0 0; padding-top: 10px; border-top: 1px solid var(--border); }
.intake-facts div { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; font-size: 10.5px; }
.intake-facts dt { color: var(--text-3); }
.intake-facts dd { margin: 0; color: var(--text-2); text-align: right; }

@media (max-width: 1100px) {
  :root { --rail-w: 72px; }
  .brand { width: 190px; flex-basis: 190px; }
  .rail-section-label { display: none; }
  .rail-btn { flex-direction: column; justify-content: center; gap: 3px; padding: 7px 2px; min-height: 56px; }
  .rail-label { font-size: 9px; }
  .rail-btn .rail-badge { position: absolute; top: 4px; right: 5px; }
  .kpi-strip .kpi:nth-child(-n+3) { display: none; }
}

@media (max-width: 760px) {
  :root { --rail-w: 0; --topbar-h: 52px; }
  body { grid-template-columns: 1fr; grid-template-rows: var(--topbar-h) 1fr 58px; grid-template-areas: "topbar" "work" "rail"; }
  .topbar { padding: 0 8px; }
  .brand { width: auto; flex-basis: auto; padding: 0 6px; border: 0; }
  .brand-name, .project-tag, .kpi-strip, #export-dd, .cmdk-trigger span, .cmdk-trigger kbd { display: none !important; }
  .cmdk-trigger { width: 32px; min-width: 0; padding: 0; justify-content: center; }
  .rail { z-index: 80; flex-direction: row; padding: 4px; border: 0; border-top: 1px solid var(--border); }
  .rail-btn { flex: 1; min-height: 48px; }
  .empty-state { padding: 14px; }
  .intake-head { align-items: flex-start; padding-top: 10px; }
  .runtime-status { display: none; }
  .intake-grid { grid-template-columns: 1fr; }
  .editor-panel { min-height: 500px; }
  .source-panel { width: 100%; }
}