/* GFC ChMS review prototype. Chrome uses the GFC ChMS light theme tokens (docs/ui/DESIGN_SYSTEM.md);
   the frame under review sits on a darker stage so the tool and the design never blur together. */
:root {
  --bg: #FAF9F7;
  --surface: #FFFFFF;
  --surface-sunken: #F5F3F0;
  --border: #E8E5E0;
  --border-strong: #D4D0CA;
  --border-input: #807A72;
  --text: #1A1714;
  --text-muted: #5E5950;
  --primary: #1A6FBE;
  --primary-hover: #1558A0;
  --primary-subtle: #EFF6FF;
  --gold: #D4A420;
  --gold-subtle: #FDF8EC;
  --success: #16A34A;
  --success-strong: #15803D;
  --success-subtle: #DCFCE7;
  --warning-strong: #7C501B;
  --danger: #DC2626;
  --danger-strong: #B91C1C;
  --danger-subtle: #FEE2E2;
  --info-strong: #1558A0;
  --stage: #2E2A24;
  --stage-text: #F5F3F0;
  --radius: 10px;
  --font: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-heading: "Plus Jakarta Sans", Inter, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 var(--font); }
h1, h2, h3 { font-family: var(--font-heading); line-height: 1.25; margin: 0 0 8px; }
h1 { font-size: 24px; }
h2 { font-size: 19px; }
h3 { font-size: 16px; }
p { margin: 0 0 12px; }
a { color: var(--primary); }
a:hover { color: var(--primary-hover); }
code, .mono { font-family: var(--font-mono); font-size: 13px; }
.muted { color: var(--text-muted); }
.help { color: var(--text-muted); font-size: 13px; margin: 4px 0 0; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.skip-link { position: absolute; left: -9999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 100; }
.skip-link:focus { left: 8px; }
.live { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Header */
.app-header { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 600; }
.brand-mark { background: var(--primary); color: #fff; border-radius: 8px; padding: 4px 7px; font-size: 12px; letter-spacing: .04em; }
.round-label { color: var(--text-muted); font-weight: 400; font-size: 13px; }
.app-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.app-nav a { padding: 6px 10px; border-radius: 8px; text-decoration: none; color: var(--text); }
.app-nav a[aria-current="page"] { background: var(--primary-subtle); color: var(--primary); font-weight: 600; }
.who { margin-left: auto; display: flex; align-items: center; gap: 8px; font-size: 14px; }
.role-badge { border: 1px solid var(--border-strong); border-radius: 999px; padding: 1px 8px; font-size: 12px; color: var(--text-muted); }
.role-badge.triage { border-color: var(--primary); color: var(--primary); }

main { padding: 20px; max-width: 1640px; margin: 0 auto; }
main:focus { outline: none; }

/* Buttons and fields */
.btn { font: inherit; border-radius: 8px; border: 1px solid var(--border-input); background: var(--surface); color: var(--text); padding: 8px 14px; min-height: 40px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; text-decoration: none; }
.btn:hover { background: var(--surface-sunken); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--primary); }
.btn-danger { border-color: var(--danger-strong); color: var(--danger-strong); }
.btn-small { min-height: 32px; padding: 4px 10px; font-size: 14px; }
.btn-block { width: 100%; justify-content: center; }
.btn[aria-pressed="true"] { background: var(--text); color: #fff; border-color: var(--text); }
.field { margin: 0 0 14px; }
.field label, .label { display: block; font-weight: 600; font-size: 14px; margin: 0 0 4px; }
input, select, textarea { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border-input); border-radius: 8px; padding: 8px 10px; width: 100%; min-height: 40px; }
textarea { min-height: 96px; resize: vertical; }
.check { display: flex; gap: 8px; align-items: center; font-size: 14px; }
.check input { width: 18px; min-height: 18px; }
.alert { border-radius: 8px; padding: 10px 12px; font-size: 14px; }
.alert-danger { background: var(--danger-subtle); color: var(--danger-strong); }
.alert-info { background: var(--primary-subtle); color: var(--info-strong); }

/* Sign-in */
.signin-page { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.signin-card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 28px; width: 100%; max-width: 420px; }
.eyebrow { color: var(--text-muted); font-size: 13px; text-transform: uppercase; letter-spacing: .06em; margin: 0 0 4px; }

/* Home */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin: 16px 0; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; display: flex; flex-direction: column; gap: 6px; }
.card h2 { font-size: 17px; }
.card .meta { color: var(--text-muted); font-size: 13px; }
.card .actions { margin-top: auto; padding-top: 8px; }
.intro { max-width: 760px; }

/* Viewer layout */
.viewer { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 18px; align-items: start; }
@media (max-width: 1100px) { .viewer { grid-template-columns: 1fr; } }
.step-head { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 12px; }
.step-head .crumbs { font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.step-head .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.tag { font-size: 12px; border-radius: 999px; padding: 1px 8px; background: var(--surface-sunken); border: 1px solid var(--border); color: var(--text-muted); }
.tag-branch { background: var(--gold-subtle); border-color: var(--gold); color: var(--warning-strong); }
.progress { height: 4px; background: var(--surface-sunken); border-radius: 4px; margin-top: 10px; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--primary); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar .spacer { flex: 1; }

.stage { background: var(--stage); border-radius: 12px; padding: 18px; position: relative; }
.stage-label { color: var(--stage-text); font-size: 12px; margin: 0 0 10px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.stage-label code { color: var(--stage-text); font-size: 12px; }
.frame-wrap { position: relative; margin: 0 auto; line-height: 0; box-shadow: 0 0 0 1px #000, 0 8px 28px rgba(0,0,0,.45); background: #fff; }
.frame-wrap img { width: 100%; height: auto; display: block; user-select: none; -webkit-user-drag: none; }
.frame-wrap.commenting { cursor: crosshair; }
.frame-wrap.commenting .hotspot { pointer-events: none; }
/* In comment mode existing pins are dimmed and let clicks through, so a tap drops a new pin (L1-06). */
.frame-wrap.commenting .pin:not(.draft) { pointer-events: none; opacity: .4; }
/* Zoom: 100% scrolls sideways inside the stage, never the page. */
.viewer > div { min-width: 0; }
.frame-scroll { max-width: 100%; overflow-x: auto; overscroll-behavior-x: contain; }
.frame-wrap.zoom-actual { margin: 0; }
.zoom { display: inline-flex; gap: 0; }
.zoom .btn { border-radius: 0; }
.zoom .btn:first-child { border-radius: 8px 0 0 8px; }
.zoom .btn:last-child { border-radius: 0 8px 8px 0; margin-left: -1px; }
.zoom .btn[aria-pressed="true"] { background: var(--primary); border-color: var(--primary); color: #fff; }
/* Small renders: smaller pins hide less of the frame. */
.small-pins .pin { min-width: 16px; height: 16px; padding: 0 3px; border-width: 1px; font-size: 9px; line-height: 14px; border-radius: 8px; }
.small-pins .pin[data-status="carried"] { border-width: 3px; line-height: 10px; }

.hotspot { position: absolute; border: 2px solid transparent; background: transparent; border-radius: 6px; cursor: pointer; padding: 0; }
.show-hotspots .hotspot, .flash .hotspot { border-color: var(--gold); background: rgba(212, 164, 32, .18); }
.hotspot:focus-visible { outline: 3px solid var(--gold); outline-offset: 1px; }
.el-outline { position: absolute; border: 2px dashed var(--primary); background: rgba(26, 111, 190, .10); pointer-events: none; border-radius: 4px; }

/* Pins: number plus shape per status, so colour is never the only cue */
.pin { position: absolute; transform: translate(-50%, -50%); min-width: 26px; height: 26px; padding: 0 6px; border-radius: 13px; border: 2px solid #fff; color: #fff; font: 600 12px/22px var(--font); text-align: center; cursor: pointer; box-shadow: 0 1px 4px rgba(0,0,0,.45); z-index: 3; }
.pin.screen-pin { position: static; transform: none; display: inline-block; }
.pin[data-status="open"] { background: var(--primary); }
.pin[data-status="needs-info"] { background: var(--warning-strong); border-style: dashed; }
.pin[data-status="accepted"] { background: var(--success-strong); border-radius: 4px; }
.pin[data-status="carried"] { background: var(--success-strong); border-radius: 4px; border-style: double; border-width: 4px; line-height: 18px; }
.pin[data-status="resolved"] { background: #3F3A33; border-radius: 4px; }
.pin[data-status="resolved"]::after { content: " \2713"; }
.pin[data-status="declined"], .pin[data-status="duplicate"] { background: #807A72; text-decoration: line-through; border-radius: 0; }
.pin.draft { background: var(--gold); color: var(--text); border-color: var(--text); }
.pin.dim { opacity: .35; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 12px; font-size: 12px; color: var(--text-muted); margin: 8px 0 0; padding: 0; list-style: none; }
.legend li { display: flex; align-items: center; gap: 4px; }
.legend .pin { position: static; transform: none; min-width: 18px; height: 18px; line-height: 14px; font-size: 10px; padding: 0 3px; box-shadow: none; cursor: default; }

/* Not drawn card */
.not-drawn { background: var(--surface); border: 2px dashed var(--border-strong); border-radius: 12px; padding: 24px; max-width: 760px; margin: 0 auto; }
.not-drawn .badge { display: inline-block; background: var(--gold-subtle); color: var(--warning-strong); border: 1px solid var(--gold); border-radius: 999px; font-size: 12px; font-weight: 600; padding: 2px 10px; margin-bottom: 10px; }
blockquote { margin: 10px 0; padding: 10px 14px; border-left: 4px solid var(--border-strong); background: var(--surface-sunken); border-radius: 0 8px 8px 0; white-space: pre-wrap; }

/* Side panel */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; position: sticky; top: 76px; max-height: calc(100vh - 96px); overflow: auto; }
@media (max-width: 1100px) { .panel { position: static; max-height: none; } }
.panel h2 { font-size: 16px; }
.composer { border: 1px solid var(--primary); background: var(--primary-subtle); border-radius: var(--radius); padding: 12px; margin-bottom: 14px; }
.composer .anchor { font-size: 13px; margin-bottom: 8px; }
.counter { font-size: 12px; color: var(--text-muted); text-align: right; }
.item-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.item-row { border: 1px solid var(--border); border-radius: 8px; padding: 10px; display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; background: var(--surface); }
.item-row .pin { position: static; transform: none; }
.item-row .body { overflow-wrap: anywhere; white-space: pre-wrap; }
.item-row .meta { grid-column: 2; font-size: 12px; color: var(--text-muted); }
.item-row a { font-weight: 600; }
.status { display: inline-block; font-size: 12px; font-weight: 600; border-radius: 999px; padding: 1px 8px; border: 1px solid var(--border-strong); }

/* Feedback list */
.filters { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; margin: 12px 0 16px; }
.empty { color: var(--text-muted); padding: 16px; border: 1px dashed var(--border-strong); border-radius: var(--radius); text-align: center; }

/* Item detail */
.detail { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 18px; align-items: start; }
@media (max-width: 1000px) { .detail { grid-template-columns: 1fr; } }
.box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 14px; }
.thread { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.thread li { border-left: 3px solid var(--border-strong); padding: 2px 0 2px 10px; }
.thread .who { font-size: 13px; color: var(--text-muted); }
.thread .text { white-space: pre-wrap; overflow-wrap: anywhere; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; font-size: 14px; margin: 0; }
.kv dt { color: var(--text-muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.triage { border-color: var(--primary); }
.thumb { max-width: 100%; border: 1px solid var(--border); border-radius: 6px; }

/* All screens */
.screen-group { margin: 0 0 22px; }
.frame-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.frame-tile { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 8px; text-decoration: none; color: var(--text); font-size: 13px; display: flex; flex-direction: column; gap: 6px; }
.frame-tile img { width: 100%; height: 120px; object-fit: cover; object-position: top left; border-radius: 4px; background: var(--surface-sunken); }

/* Guide */
.guide { max-width: 760px; }
.guide li { margin-bottom: 6px; }
.guide table { border-collapse: collapse; width: 100%; font-size: 14px; }
.guide th, .guide td { border: 1px solid var(--border); padding: 6px 8px; text-align: left; vertical-align: top; }

@media (max-width: 600px) {
  main { padding: 12px; }
  .app-header { padding: 8px 12px; }
  .who { margin-left: 0; width: 100%; }
  .stage { padding: 10px; }
}
.thread .text.redacted { font-style: italic; color: var(--text-muted); }