/* ============================================================
   Loadpath — Solar Structural Engineering Platform
   Engineering-tool UI layer, built on compile.guru tokens.
   ============================================================ */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  background: var(--bg-sunken);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
#root { height: 100%; }
button { font-family: inherit; }
:focus-visible { outline: none; box-shadow: var(--shadow-focus); border-radius: var(--radius-sm); }

/* ---------- numeric / mono helpers ---------- */
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--fg-subtle);
  font-weight: 600;
}

/* ============================================================
   APP SHELL
   ============================================================ */
.app {
  display: grid;
  grid-template-rows: 52px 1fr;
  height: 100%;
  min-height: 0;
}
.topbar {
  display: flex; align-items: center; gap: var(--space-4);
  padding: 0 var(--space-5);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  z-index: var(--z-sticky);
}
.brand { display: flex; align-items: center; gap: 9px; cursor: pointer; user-select: none; }
.brand-mark {
  width: 26px; height: 26px; border-radius: var(--radius-sm);
  background: var(--slate-900); color: var(--ember-400);
  display: grid; place-items: center; flex-shrink: 0;
}
.brand-mark svg { width: 16px; height: 16px; }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: -0.01em; color: var(--fg); }
.brand-name b { color: var(--accent); font-weight: 700; }
.topbar-spacer { flex: 1; }
.topbar-ctx {
  display: flex; align-items: center; gap: var(--space-3);
  font-size: 13px; color: var(--fg-muted);
  padding: 5px 12px; border: 1px solid var(--border); border-radius: var(--radius-full);
  background: var(--bg);
}
.topbar-ctx .num { color: var(--fg); }
.avatar {
  width: 28px; height: 28px; border-radius: var(--radius-full);
  background: var(--ember-100); color: var(--ember-700);
  display: grid; place-items: center; font-weight: 700; font-size: 12px;
  border: 1px solid var(--ember-200); cursor: pointer; flex-shrink: 0;
}
.topbar-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 11px; font-size: 13px; font-weight: 500;
  color: var(--fg-muted); background: none; border: 1px solid transparent;
  border-radius: var(--radius-md); cursor: pointer;
}
.topbar-btn:hover { background: var(--bg-sunken); color: var(--fg); }
.topbar-btn svg { width: 15px; height: 15px; }

.app-body { display: grid; grid-template-columns: 248px 1fr; min-height: 0; }
.app-body.no-rail { grid-template-columns: 1fr; }

/* ============================================================
   PIPELINE RAIL (the state machine, visible)
   ============================================================ */
.rail {
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  padding: var(--space-5) 0;
  overflow-y: auto;
  display: flex; flex-direction: column;
}
.rail-head { padding: 0 var(--space-5) var(--space-4); }
.rail-proj { font-weight: 650; font-size: 14px; letter-spacing: -0.01em; }
.rail-addr { font-size: 12px; color: var(--fg-subtle); margin-top: 2px; }
.rail-group-label { padding: var(--space-4) var(--space-5) var(--space-2); }
.steps { list-style: none; margin: 0; padding: 0; }
.step {
  display: grid; grid-template-columns: 30px 1fr; align-items: start;
  gap: 0; padding: 2px var(--space-5); position: relative; cursor: default;
}
.step-node { display: flex; flex-direction: column; align-items: center; }
.step-dot {
  width: 22px; height: 22px; border-radius: var(--radius-full);
  border: 1.5px solid var(--border-strong); background: var(--bg-elevated);
  display: grid; place-items: center; flex-shrink: 0;
  font-family: var(--font-mono); font-size: 11px; font-weight: 600; color: var(--fg-faint);
  z-index: 2; transition: all var(--dur-base) var(--ease-out);
}
.step-dot svg { width: 12px; height: 12px; }
.step-line { width: 1.5px; flex: 1; min-height: 14px; background: var(--border); margin: 1px 0; }
.step:last-child .step-line { display: none; }
.step-label {
  padding: 2px 0 14px; font-size: 13px; color: var(--fg-subtle); line-height: 1.3;
  transition: color var(--dur-base);
}
.step-label small { display: block; font-size: 11px; color: var(--fg-faint); margin-top: 1px; }

.step.done .step-dot { border-color: var(--signal-success); background: var(--signal-success); color: #fff; }
.step.done .step-line { background: var(--signal-success); }
.step.done .step-label { color: var(--fg-muted); }
.step.current .step-dot {
  border-color: var(--accent); background: var(--accent-bg); color: var(--accent-fg);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent);
}
.step.current .step-label { color: var(--fg); font-weight: 600; }
.step.blocked .step-dot { border-color: var(--signal-danger); background: var(--signal-danger); color: #fff; }
.step.blocked .step-label { color: var(--signal-danger); }
.step.exception .step-dot { border-color: var(--signal-warning); background: var(--signal-warning); color: #fff; }

.rail-foot { margin-top: auto; padding: var(--space-4) var(--space-5) 0; }

/* ============================================================
   MAIN CANVAS
   ============================================================ */
.canvas { overflow-y: auto; min-height: 0; }
.canvas-inner { max-width: 880px; margin: 0 auto; padding: var(--space-10) var(--space-8) var(--space-20); }
.canvas-inner.wide { max-width: 1080px; }
.screen-eyebrow { margin-bottom: 10px; }
.screen-title { font-family: var(--font-serif); font-size: 30px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 8px; line-height: 1.1; }
.screen-sub { font-size: 15px; color: var(--fg-muted); max-width: 56ch; margin: 0 0 var(--space-8); line-height: 1.5; }

/* ---------- cards ---------- */
.card {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-6);
}
.card + .card { margin-top: var(--space-4); }
.card-tight { padding: var(--space-5); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-4); }
.card-head h3 { margin: 0; font-size: 15px; font-weight: 650; font-family: var(--font-sans); letter-spacing: -0.01em; }
.card-head .eyebrow { margin: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 600; font-family: var(--font-sans);
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: background var(--dur-fast), border-color var(--dur-fast), color var(--dur-fast);
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--accent); color: var(--fg-on-accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { background: var(--ember-700); }
.btn-secondary { background: var(--bg-elevated); color: var(--fg); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--bg-sunken); border-color: var(--fg-subtle); }
.btn-ghost { background: none; color: var(--fg-muted); }
.btn-ghost:hover { background: var(--bg-sunken); color: var(--fg); }
.btn-danger { background: var(--signal-danger); color: #fff; }
.btn-danger:hover { filter: brightness(0.94); }
.btn-sm { padding: 7px 13px; font-size: 13px; }
.btn-lg { padding: 13px 24px; font-size: 15px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-block { width: 100%; }

.btn-row { display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap; }
.btn-row.end { justify-content: flex-end; }
.btn-row.between { justify-content: space-between; }

/* ---------- badges / pills ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 9px; border-radius: var(--radius-full);
  font-size: 11.5px; font-weight: 600; line-height: 1.4;
  font-family: var(--font-sans); border: 1px solid transparent; white-space: nowrap;
}
.badge svg { width: 12px; height: 12px; }
.badge-pass    { background: color-mix(in srgb, var(--signal-success) 13%, transparent); color: #2c6e4a; border-color: color-mix(in srgb, var(--signal-success) 30%, transparent); }
.badge-fail    { background: color-mix(in srgb, var(--signal-danger) 13%, transparent); color: #9a342d; border-color: color-mix(in srgb, var(--signal-danger) 30%, transparent); }
.badge-exempt  { background: color-mix(in srgb, var(--signal-info) 13%, transparent); color: #2c5f8f; border-color: color-mix(in srgb, var(--signal-info) 30%, transparent); }
.badge-warn    { background: color-mix(in srgb, var(--signal-warning) 16%, transparent); color: #8a5e0c; border-color: color-mix(in srgb, var(--signal-warning) 35%, transparent); }
.badge-neutral { background: var(--bg-sunken); color: var(--fg-muted); border-color: var(--border); }
.badge-accent  { background: var(--accent-bg); color: var(--accent-fg); border-color: color-mix(in srgb, var(--accent) 30%, transparent); }
.badge-mono { font-family: var(--font-mono); font-weight: 600; }

/* ---------- source-sheet provenance tag ---------- */
.srctag {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 600;
  color: var(--fg-subtle); background: var(--bg-sunken);
  padding: 1px 5px; border-radius: var(--radius-xs); border: 1px solid var(--border);
  white-space: nowrap;
}
.conf-dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.conf-high { background: var(--signal-success); }
.conf-med  { background: var(--signal-warning); }
.conf-low  { background: var(--signal-danger); }

/* ============================================================
   FORMS
   ============================================================ */
.field { margin-bottom: var(--space-4); }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--fg); }
.field .req { color: var(--signal-danger); }
.input, .select {
  width: 100%; padding: 11px 13px; font-size: 14px; font-family: var(--font-sans);
  border: 1px solid var(--border-strong); border-radius: var(--radius-md);
  background: var(--bg-elevated); color: var(--fg); outline: none;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.input:focus, .select:focus { border-color: var(--accent); box-shadow: var(--shadow-focus); }
.input::placeholder { color: var(--fg-faint); }
.input.mono { font-family: var(--font-mono); }
.field .hint { font-size: 12px; color: var(--fg-subtle); margin-top: 5px; }

/* ============================================================
   DATA TABLES (extracted values, DCR results, criteria)
   ============================================================ */
.dtable { width: 100%; border-collapse: collapse; font-size: 13px; }
.dtable th {
  text-align: left; font-family: var(--font-mono); font-size: 10.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-subtle);
  padding: 0 12px 8px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.dtable th.r, .dtable td.r { text-align: right; }
.dtable td { padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.dtable tr:last-child td { border-bottom: none; }
.dtable tbody tr:hover { background: var(--bg-sunken); }
.dtable .name { font-weight: 550; color: var(--fg); }
.dtable .val { font-family: var(--font-mono); color: var(--fg); font-variant-numeric: tabular-nums; }
.dtable .unit { color: var(--fg-subtle); font-family: var(--font-mono); font-size: 12px; }
.dtable .src { display: flex; align-items: center; gap: 6px; }

/* DCR bar cell */
.dcr-cell { display: flex; align-items: center; gap: 10px; min-width: 160px; }
.dcr-bar { flex: 1; height: 7px; border-radius: var(--radius-full); background: var(--bg-sunken); overflow: hidden; position: relative; }
.dcr-bar .gate { position: absolute; top: -2px; bottom: -2px; left: 100%; width: 1.5px; background: var(--fg-faint); }
.dcr-fill { height: 100%; border-radius: var(--radius-full); transition: width var(--dur-slower) var(--ease-out); }
.dcr-fill.ok { background: var(--signal-success); }
.dcr-fill.warnish { background: var(--signal-warning); }
.dcr-fill.over { background: var(--signal-danger); }
.dcr-num { font-family: var(--font-mono); font-weight: 600; font-size: 13px; min-width: 42px; text-align: right; font-variant-numeric: tabular-nums; }

/* ============================================================
   UPLOAD / DROPZONE
   ============================================================ */
.dropzone {
  border: 1.5px dashed var(--border-strong); border-radius: var(--radius-lg);
  padding: var(--space-12) var(--space-8); text-align: center;
  background: var(--bg-elevated); cursor: pointer;
  transition: border-color var(--dur-base), background var(--dur-base);
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--accent-bg); }
.dropzone .dz-icon { width: 44px; height: 44px; margin: 0 auto var(--space-4); color: var(--fg-faint); }
.dropzone h4 { margin: 0 0 6px; font-size: 16px; }
.dropzone p { margin: 0; font-size: 13px; color: var(--fg-subtle); }

/* file chip */
.filechip {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--bg-elevated);
}
.filechip .fi { width: 34px; height: 40px; border-radius: 3px; background: color-mix(in srgb, var(--signal-danger) 12%, transparent); color: #9a342d; display: grid; place-items: center; flex-shrink: 0; font-family: var(--font-mono); font-size: 8.5px; font-weight: 700; }
.filechip .meta { flex: 1; min-width: 0; }
.filechip .fn { font-weight: 600; font-size: 13.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.filechip .fm { font-size: 12px; color: var(--fg-subtle); font-family: var(--font-mono); margin-top: 1px; }

/* ============================================================
   SCANNING / PROCESSING ANIMATION
   ============================================================ */
.scanline { position: relative; overflow: hidden; }
.scanline::after {
  content: ""; position: absolute; left: 0; right: 0; height: 32%;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--accent) 22%, transparent), transparent);
  animation: scan 1.6s var(--ease-in-out) infinite;
}
@keyframes scan { 0% { top: -32%; } 100% { top: 100%; } }

.proc-log { font-family: var(--font-mono); font-size: 12.5px; line-height: 1.9; }
.proc-log .ln { display: flex; align-items: center; gap: 9px; color: var(--fg-muted); }
.proc-log .ln .tick { width: 14px; height: 14px; flex-shrink: 0; }
.proc-log .ln.pending { color: var(--fg-faint); }
.proc-log .ln.active { color: var(--fg); }
.proc-log .ln .spin { width: 12px; height: 12px; border: 1.5px solid var(--border-strong); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   QUOTE
   ============================================================ */
.quote-hero {
  text-align: center; padding: var(--space-10) var(--space-8);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--bg-elevated); position: relative; overflow: hidden;
}
.quote-amount { font-family: var(--font-mono); font-weight: 700; letter-spacing: -0.03em; line-height: 1; color: var(--fg); }
.quote-amount.big { font-size: 68px; }
.quote-cents { color: var(--fg-subtle); }
.quote-basis { font-size: 13px; color: var(--fg-muted); margin-top: 12px; }
.tier-row { display: flex; align-items: center; justify-content: space-between; padding: 11px 0; border-bottom: 1px solid var(--border); font-size: 13.5px; }
.tier-row:last-child { border-bottom: none; }
.tier-row.active { color: var(--fg); font-weight: 600; }
.tier-row.muted { color: var(--fg-faint); }
.tier-price { font-family: var(--font-mono); font-weight: 600; }

/* combination summary chips */
.combo-list { display: flex; flex-direction: column; gap: 10px; }
.combo {
  display: grid; grid-template-columns: 30px 1fr auto; gap: 12px; align-items: center;
  padding: 13px 15px; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--bg-elevated);
}
.combo .ci { width: 30px; height: 30px; border-radius: var(--radius-sm); background: var(--bg-sunken); display: grid; place-items: center; color: var(--fg-muted); }
.combo .ci svg { width: 16px; height: 16px; }
.combo .ctitle { font-weight: 600; font-size: 13.5px; }
.combo .csub { font-size: 12px; color: var(--fg-subtle); font-family: var(--font-mono); margin-top: 1px; }

/* ============================================================
   CALLOUTS / banners
   ============================================================ */
.callout {
  display: flex; gap: 13px; padding: 15px 17px; border-radius: var(--radius-md);
  font-size: 13.5px; line-height: 1.5; border: 1px solid var(--border);
}
.callout svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.callout .ct-title { font-weight: 650; margin-bottom: 3px; }
.callout p { margin: 0; color: var(--fg-muted); }
.callout-info   { background: color-mix(in srgb, var(--signal-info) 8%, var(--bg-elevated)); border-color: color-mix(in srgb, var(--signal-info) 28%, transparent); }
.callout-info svg { color: var(--signal-info); }
.callout-warn   { background: color-mix(in srgb, var(--signal-warning) 11%, var(--bg-elevated)); border-color: color-mix(in srgb, var(--signal-warning) 35%, transparent); }
.callout-warn svg { color: #a06f0c; }
.callout-danger { background: color-mix(in srgb, var(--signal-danger) 8%, var(--bg-elevated)); border-color: color-mix(in srgb, var(--signal-danger) 28%, transparent); }
.callout-danger svg { color: var(--signal-danger); }
.callout-success{ background: color-mix(in srgb, var(--signal-success) 9%, var(--bg-elevated)); border-color: color-mix(in srgb, var(--signal-success) 28%, transparent); }
.callout-success svg { color: var(--signal-success); }
.callout-accent { background: var(--accent-bg); border-color: color-mix(in srgb, var(--accent) 26%, transparent); }
.callout-accent svg { color: var(--accent); }

/* ============================================================
   DASHBOARD
   ============================================================ */
.dash { max-width: 1120px; margin: 0 auto; padding: var(--space-10) var(--space-8) var(--space-20); }
.dash-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-8); }
.dash-head h1 { font-family: var(--font-serif); font-size: 30px; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.dash-head p { margin: 4px 0 0; color: var(--fg-muted); font-size: 14px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-bottom: var(--space-8); }
.stat { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); }
.stat .sv { font-family: var(--font-mono); font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.stat .sl { font-size: 12.5px; color: var(--fg-subtle); margin-top: 3px; }
.stat .sl b { color: var(--fg-muted); font-weight: 600; }

.proj-table { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.proj-row {
  display: grid; grid-template-columns: 1fr 130px 150px 120px 90px; gap: var(--space-4);
  align-items: center; padding: 15px var(--space-5); border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background var(--dur-fast);
}
.proj-row:last-child { border-bottom: none; }
.proj-row:hover { background: var(--bg-sunken); }
.proj-row.head { cursor: default; padding: 11px var(--space-5); background: var(--bg-sunken); }
.proj-row.head:hover { background: var(--bg-sunken); }
.proj-row.head span { font-family: var(--font-mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-subtle); font-weight: 600; }
.proj-name { font-weight: 650; font-size: 14px; }
.proj-meta { font-size: 12px; color: var(--fg-subtle); margin-top: 2px; }
.proj-addr { font-size: 13px; color: var(--fg-muted); }
.proj-fee { font-family: var(--font-mono); font-weight: 600; font-size: 13.5px; }

/* ============================================================
   DOCUMENT VIEWER (deliverables = "paper")
   ============================================================ */
.docview { position: fixed; inset: 0; z-index: var(--z-modal); display: grid; grid-template-columns: 280px 1fr; background: rgba(10,13,17,0.55); backdrop-filter: blur(3px); }
.docview-side { background: var(--bg-elevated); border-right: 1px solid var(--border); padding: var(--space-5); overflow-y: auto; }
.docview-side h4 { margin: 0 0 4px; font-size: 14px; }
.docview-side .ds-sub { font-size: 12px; color: var(--fg-subtle); margin-bottom: var(--space-5); }
.doc-item { display: flex; gap: 11px; padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 9px; cursor: pointer; background: var(--bg-elevated); transition: border-color var(--dur-fast), background var(--dur-fast); }
.doc-item:hover { border-color: var(--border-strong); background: var(--bg-sunken); }
.doc-item.active { border-color: var(--accent); background: var(--accent-bg); }
.doc-item .di { width: 30px; height: 38px; border-radius: 3px; background: var(--bg-sunken); border: 1px solid var(--border); display: grid; place-items: center; color: var(--fg-muted); flex-shrink: 0; font-family: var(--font-mono); font-size: 8px; font-weight: 700; }
.doc-item .dt { font-size: 12.5px; font-weight: 600; line-height: 1.3; }
.doc-item .dm { font-size: 11px; color: var(--fg-subtle); margin-top: 2px; }
.docview-main { overflow-y: auto; padding: var(--space-8); }
.docview-close { position: absolute; top: 16px; right: 20px; z-index: 2; }

.paper {
  max-width: 760px; margin: 0 auto; background: #fff; color: #1a1a1a;
  border-radius: var(--radius-sm); box-shadow: var(--shadow-xl);
  padding: 64px 72px; min-height: 900px;
}
:root.dark .paper { background: #fbfaf8; }
.paper-head { border-bottom: 2px solid #1a1a1a; padding-bottom: 18px; margin-bottom: 26px; }
.paper-eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: #6b6b6b; font-weight: 600; }
.paper h1 { font-family: var(--font-serif); font-size: 25px; font-weight: 700; margin: 8px 0 0; color: #111; letter-spacing: -0.01em; }
.paper-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 28px; margin-top: 16px; }
.paper-grid .k { font-family: var(--font-mono); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.04em; color: #888; }
.paper-grid .v { font-size: 13px; color: #1a1a1a; margin-bottom: 8px; }
.paper h2 { font-family: var(--font-sans); font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: #111; margin: 30px 0 12px; padding-bottom: 6px; border-bottom: 1px solid #ddd; }
.paper h2 .secnum { color: var(--ember-600); margin-right: 8px; }
.paper p { font-family: var(--font-serif); font-size: 13.5px; line-height: 1.7; color: #2a2a2a; margin: 0 0 12px; }
.paper .formula { font-family: var(--font-mono); font-size: 12px; line-height: 1.85; background: #f5f4f1; border: 1px solid #e6e4df; border-radius: 4px; padding: 14px 16px; margin: 12px 0; color: #2a2a2a; white-space: pre-wrap; overflow-x: auto; }
.paper .formula .cmt { color: #9a8b6f; }
.paper .ptable { width: 100%; border-collapse: collapse; font-size: 12.5px; margin: 12px 0; }
.paper .ptable th { text-align: left; font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em; color: #777; padding: 6px 10px; border-bottom: 1.5px solid #ccc; }
.paper .ptable td { padding: 7px 10px; border-bottom: 1px solid #eee; font-family: var(--font-serif); color: #222; }
.paper .ptable td.n { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.paper .ptable th.r, .paper .ptable td.r { text-align: right; }
.paper .seal-note { margin-top: 40px; padding-top: 16px; border-top: 1px dashed #bbb; font-family: var(--font-sans); font-size: 11.5px; color: #888; font-style: italic; }
.paper .pass-stamp { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-sans); font-weight: 700; font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase; padding: 5px 12px; border-radius: 4px; }
.paper .pass-stamp.pass { color: #2c6e4a; background: #e3f2e9; border: 1px solid #b6dcc4; }
.paper .pass-stamp.fail { color: #9a342d; background: #fbe7e5; border: 1px solid #e7bdb9; }

/* ============================================================
   MODALS
   ============================================================ */
.overlay { position: fixed; inset: 0; z-index: var(--z-modal); background: rgba(10,13,17,0.5); backdrop-filter: blur(2px); display: grid; place-items: center; padding: var(--space-6); }
.modal { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); width: 480px; max-width: 100%; padding: var(--space-8); }
.modal-icon { width: 46px; height: 46px; border-radius: var(--radius-md); display: grid; place-items: center; margin-bottom: var(--space-4); }
.modal h2 { font-family: var(--font-serif); font-size: 22px; font-weight: 700; margin: 0 0 8px; letter-spacing: -0.01em; }
.modal p { font-size: 14px; color: var(--fg-muted); line-height: 1.55; margin: 0 0 var(--space-5); }

/* ============================================================
   EMPTY STATE (new user · 0 projects)
   ============================================================ */
.empty-dash { max-width: 880px; }
.empty-hero { margin-bottom: var(--space-8); }
.empty-hero h1 { font-family: var(--font-serif); font-size: 38px; line-height: 1.08; font-weight: 700; letter-spacing: -0.025em; margin: 0 0 14px; max-width: 18ch; }
.empty-hero p { font-size: 16px; line-height: 1.6; color: var(--fg-muted); max-width: 60ch; margin: 0; }

.empty-start {
  display: flex; align-items: center; gap: var(--space-5);
  padding: var(--space-6) var(--space-6); margin-bottom: var(--space-8);
  border: 1.5px dashed var(--border-strong); border-radius: var(--radius-lg);
  background: var(--bg-elevated); cursor: pointer;
  transition: border-color var(--dur-base), background var(--dur-base), box-shadow var(--dur-base);
}
.empty-start:hover, .empty-start.drag { border-color: var(--accent); background: var(--accent-bg); box-shadow: var(--shadow-sm); }
.es-mark {
  width: 56px; height: 56px; border-radius: var(--radius-md); flex-shrink: 0;
  background: var(--slate-900); color: var(--ember-400); display: grid; place-items: center;
}
.empty-start.drag .es-mark, .empty-start:hover .es-mark { background: var(--accent); color: #fff; }
.es-body { flex: 1; min-width: 0; }
.es-title { font-family: var(--font-serif); font-size: 19px; font-weight: 700; letter-spacing: -0.01em; }
.es-sub { font-size: 13.5px; color: var(--fg-subtle); margin-top: 3px; }

.empty-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-bottom: var(--space-6); }
.estep { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); }
.estep-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.estep-icon { width: 36px; height: 36px; border-radius: var(--radius-md); background: var(--bg-sunken); color: var(--fg-muted); display: grid; place-items: center; }
.estep-n { font-family: var(--font-mono); font-size: 12px; font-weight: 700; color: var(--fg-faint); letter-spacing: 0.04em; }
.estep-t { font-weight: 650; font-size: 14.5px; margin-bottom: 5px; letter-spacing: -0.01em; }
.estep-d { font-size: 12.5px; color: var(--fg-muted); line-height: 1.5; }

.empty-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: var(--space-5); }
.strip-item { display: flex; align-items: center; gap: 11px; padding: 15px 16px; background: var(--bg-elevated); color: var(--fg-subtle); }
.strip-item svg { flex-shrink: 0; color: var(--accent); }
.si-k { font-weight: 650; font-size: 13.5px; color: var(--fg); letter-spacing: -0.01em; }
.si-v { font-size: 11.5px; color: var(--fg-subtle); margin-top: 1px; }

.empty-foot { display: flex; gap: 9px; align-items: flex-start; font-size: 12.5px; color: var(--fg-subtle); line-height: 1.5; padding: 0 2px; }
.empty-foot svg { flex-shrink: 0; margin-top: 1px; }

@media (max-width: 760px) {
  .empty-steps { grid-template-columns: 1fr; }
  .empty-strip { grid-template-columns: 1fr 1fr; }
  .empty-hero h1 { font-size: 30px; }
  .empty-start { flex-wrap: wrap; }
}

/* ============================================================
   ONBOARDING (first visit · account + first project)
   ============================================================ */
.onb { position: fixed; inset: 0; display: grid; grid-template-columns: 440px 1fr; background: var(--bg); z-index: var(--z-modal); }
.onb-aside {
  background: var(--slate-950); color: var(--slate-100);
  padding: var(--space-10) var(--space-10) var(--space-8);
  display: flex; flex-direction: column; position: relative; overflow: hidden;
}
:root.dark .onb-aside { background: #07090c; border-right: 1px solid var(--border); }
.onb-aside::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(var(--slate-800) 1px, transparent 1px);
  background-size: 18px 18px; opacity: 0.4; mask-image: linear-gradient(180deg, transparent, #000 40%, #000 70%, transparent);
}
.onb-brand { display: flex; align-items: center; gap: 10px; position: relative; z-index: 1; }
.onb-brand .brand-mark { width: 30px; height: 30px; }
.onb-brand .brand-mark svg { width: 18px; height: 18px; }
.onb-brand .bn { font-size: 17px; font-weight: 700; letter-spacing: -0.01em; }
.onb-brand .bn b { color: var(--ember-400); }
.onb-aside-body { margin-top: auto; margin-bottom: var(--space-8); position: relative; z-index: 1; }
.onb-aside-body h2 { font-family: var(--font-serif); font-size: 27px; font-weight: 700; line-height: 1.18; letter-spacing: -0.02em; margin: 0 0 14px; color: #fff; max-width: 16ch; }
.onb-aside-body p { font-size: 14px; line-height: 1.6; color: var(--slate-400); margin: 0; max-width: 36ch; }

.onb-prog { position: relative; z-index: 1; display: flex; flex-direction: column; gap: 2px; }
.onb-pstep { display: grid; grid-template-columns: 28px 1fr; gap: 12px; align-items: start; padding: 7px 0; }
.onb-pnode { display: flex; flex-direction: column; align-items: center; }
.onb-pdot {
  width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0; display: grid; place-items: center;
  border: 1.5px solid var(--slate-700); background: var(--slate-900); color: var(--slate-500);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  transition: all var(--dur-base) var(--ease-out);
}
.onb-pdot svg { width: 13px; height: 13px; }
.onb-pline { width: 1.5px; flex: 1; min-height: 16px; background: var(--slate-800); margin: 2px 0; }
.onb-pstep:last-child .onb-pline { display: none; }
.onb-plabel { padding-top: 4px; }
.onb-plabel .pl { font-size: 13.5px; font-weight: 600; color: var(--slate-400); line-height: 1.2; }
.onb-plabel .ps { font-size: 11.5px; color: var(--slate-600); margin-top: 2px; }
.onb-pstep.done .onb-pdot { border-color: var(--signal-success); background: var(--signal-success); color: #fff; }
.onb-pstep.done .onb-pline { background: var(--signal-success); }
.onb-pstep.current .onb-pdot { border-color: var(--ember-400); background: var(--ember-500); color: #fff; box-shadow: 0 0 0 4px color-mix(in srgb, var(--ember-500) 22%, transparent); }
.onb-pstep.current .onb-plabel .pl { color: #fff; }

.onb-main { overflow-y: auto; display: flex; flex-direction: column; }
.onb-main-top { display: flex; justify-content: flex-end; align-items: center; gap: 14px; padding: var(--space-6) var(--space-8); font-size: 13px; color: var(--fg-subtle); }
.onb-main-top a { color: var(--link); text-decoration: none; font-weight: 500; }
.onb-form-wrap { flex: 1; display: grid; place-items: center; padding: var(--space-6) var(--space-8) var(--space-12); }
.onb-form { width: 100%; max-width: 420px; }
.onb-eyebrow { margin-bottom: 10px; }
.onb-form h1 { font-family: var(--font-serif); font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 8px; line-height: 1.12; }
.onb-form .lead { font-size: 14.5px; color: var(--fg-muted); line-height: 1.5; margin: 0 0 var(--space-6); }
.onb-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
.onb-form .field { margin-bottom: var(--space-4); }
.input-affix { position: relative; }
.input-affix .ic { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--fg-faint); pointer-events: none; }
.input-affix .input { padding-left: 38px; }
.input-affix .ok { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--signal-success); opacity: 0; transition: opacity var(--dur-fast); }
.input-affix.valid .ok { opacity: 1; }
.input-affix.valid .input { border-color: color-mix(in srgb, var(--signal-success) 50%, var(--border-strong)); }

/* email verification code */
.code-row { display: flex; gap: 10px; margin: 6px 0 4px; }
.code-cell {
  width: 52px; height: 60px; text-align: center; font-family: var(--font-mono); font-size: 24px; font-weight: 600;
  border: 1.5px solid var(--border-strong); border-radius: var(--radius-md); background: var(--bg-elevated); color: var(--fg);
  outline: none; transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.code-cell:focus { border-color: var(--accent); box-shadow: var(--shadow-focus); }
.code-cell.filled { border-color: var(--accent); }
.resend { font-size: 12.5px; color: var(--fg-subtle); margin-top: 14px; }
.resend a { color: var(--link); cursor: pointer; }

/* role chooser */
.role-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: var(--space-4); }
.role-opt {
  display: flex; align-items: center; gap: 11px; padding: 13px 14px; text-align: left;
  border: 1.5px solid var(--border); border-radius: var(--radius-md); background: var(--bg-elevated); cursor: pointer;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.role-opt:hover { border-color: var(--border-strong); }
.role-opt.sel { border-color: var(--accent); background: var(--accent-bg); }
.role-opt .ri { width: 32px; height: 32px; border-radius: var(--radius-sm); background: var(--bg-sunken); color: var(--fg-muted); display: grid; place-items: center; flex-shrink: 0; }
.role-opt.sel .ri { background: var(--accent); color: #fff; }
.role-opt .rl { font-size: 13px; font-weight: 600; line-height: 1.2; }
.role-opt .rd { font-size: 11px; color: var(--fg-subtle); margin-top: 2px; }

.onb-elig { margin-top: 6px; }
.onb-actions { display: flex; gap: 12px; align-items: center; margin-top: var(--space-6); }
.onb-actions .grow { flex: 1; }
.onb-legal { font-size: 11.5px; color: var(--fg-subtle); line-height: 1.5; margin-top: var(--space-5); }
.onb-legal a { color: var(--link); text-decoration: none; }

/* welcome / done */
.onb-done { text-align: center; max-width: 440px; }
.onb-done .seal { width: 60px; height: 60px; border-radius: 50%; margin: 0 auto var(--space-5); display: grid; place-items: center;
  background: color-mix(in srgb, var(--signal-success) 14%, transparent); color: var(--signal-success); }
.onb-done h1 { font-family: var(--font-serif); font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 10px; }
.onb-done p { font-size: 14.5px; color: var(--fg-muted); line-height: 1.55; margin: 0 0 var(--space-6); }
.onb-summary { text-align: left; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); margin-bottom: var(--space-6); }

@media (max-width: 880px) {
  .onb { grid-template-columns: 1fr; }
  .onb-aside { display: none; }
}
@media (max-width: 560px) {
  .onb-row2 { grid-template-columns: 1fr; }
  .role-grid { grid-template-columns: 1fr; }
  .code-cell { width: 44px; height: 52px; font-size: 20px; }
}

/* ============================================================
   misc
   ============================================================ */
.divider { height: 1px; background: var(--border); margin: var(--space-6) 0; }
.spacer-4 { height: var(--space-4); }
.spacer-6 { height: var(--space-6); }
.spacer-8 { height: var(--space-8); }
.kv { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 7px 0; font-size: 13.5px; border-bottom: 1px solid var(--border); }
.kv:last-child { border-bottom: none; }
.kv .k { color: var(--fg-muted); }
.kv .v { font-family: var(--font-mono); font-weight: 550; text-align: right; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: var(--space-6); align-items: start; }
.text-mut { color: var(--fg-muted); }
.text-sub { color: var(--fg-subtle); }
.fade-in { animation: riseIn var(--dur-slow) var(--ease-out); }
@keyframes riseIn { from { transform: translateY(8px); } to { transform: none; } }
.stagger > * { animation: riseIn var(--dur-slow) var(--ease-out); }
.stagger > *:nth-child(1) { animation-delay: 0.02s; }
.stagger > *:nth-child(2) { animation-delay: 0.06s; }
.stagger > *:nth-child(3) { animation-delay: 0.10s; }
.stagger > *:nth-child(4) { animation-delay: 0.14s; }
.stagger > *:nth-child(5) { animation-delay: 0.18s; }
.stagger > *:nth-child(6) { animation-delay: 0.22s; }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .app-body { grid-template-columns: 1fr; }
  .rail { display: none; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .proj-row { grid-template-columns: 1fr auto; }
  .proj-row .col-hide { display: none; }
  .docview { grid-template-columns: 1fr; }
  .docview-side { display: none; }
  .grid-2-1 { grid-template-columns: 1fr; }
  .paper { padding: 36px 28px; }
}
@media (max-width: 560px) {
  .canvas-inner { padding: var(--space-6) var(--space-5) var(--space-16); }
  .grid-2 { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .quote-amount.big { font-size: 52px; }
}