:root {
  color-scheme: light;
  --pg: #faf6ef;
  --card: #ffffff;
  --soft: #fcfbf7;
  --ink: #2a2622;
  --mut: #8c8378;
  --subtle: #b7ae9f;
  --line: #ece4d8;
  --grn: #0e7a5b;
  --grnk: #0a4d3a;
  --grns: #e4f1ea;
  --cor: #e2613b;
  --cors: #fbeadf;
  --warn: #fbeed2;
  --warnk: #8a6212;
  --danger: #c0492e;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; }
body { background: #efe7d8; color: var(--ink); font-family: var(--font); font-size: 15px; }
button, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
.is-hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.app {
  width: min(100%, 430px);
  min-height: 100dvh;
  margin: 0 auto;
  background: var(--pg);
  position: relative;
  overflow: hidden;
}
@media (min-width: 460px) {
  body { display: flex; align-items: center; justify-content: center; padding: 18px 0; }
  .app { min-height: min(900px, calc(100dvh - 36px)); border-radius: 30px; box-shadow: 0 24px 70px rgba(42,38,34,.18); }
}
.screen { min-height: 100dvh; display: flex; flex-direction: column; padding: max(14px, env(safe-area-inset-top)) 16px calc(14px + env(safe-area-inset-bottom)); }
@media (min-width: 460px) { .screen { min-height: min(900px, calc(100dvh - 36px)); } }

/* ---------- HOME ---------- */
.home { gap: 12px; height: 100dvh; }
@media (min-width: 460px) { .home { height: min(900px, calc(100dvh - 36px)); } }
.home-head { display: flex; align-items: center; gap: 10px; padding-top: 6px; }
.mark { width: 40px; height: 40px; border-radius: 13px; background: var(--grn); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 17px; }
.coach-name { margin: 0; font-weight: 600; font-size: 16px; }
.name-row { display: flex; align-items: center; gap: 7px; }
.kind { font-size: 11px; font-weight: 600; color: var(--grnk); background: var(--grns); border-radius: 6px; padding: 1px 7px; white-space: nowrap; }
.credibility { margin: 2px 0 0; color: var(--mut); font-size: 12px; line-height: 1.4; }
.me-btn { margin-left: auto; flex: none; white-space: nowrap; align-self: flex-start; background: transparent; border: 1px solid var(--line); color: var(--grnk); font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: 999px; }
.me-btn:active { background: var(--soft); }
.me-body { display: flex; flex-direction: column; gap: 9px; }
.me-empty { color: var(--mut); font-size: 13px; line-height: 1.6; }
.me-item { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; text-align: left; background: var(--card); border: 1px solid var(--line); border-radius: 13px; padding: 11px 13px; }
.me-item:active { background: var(--soft); }
.me-t { font-size: 15px; font-weight: 600; color: var(--ink); }
.me-when { font-size: 12px; color: var(--subtle); align-self: center; }
.me-d { grid-column: 1 / -1; font-size: 12px; color: var(--mut); line-height: 1.4; }
.home-hero { background: linear-gradient(158deg, #fbf1dd 0%, var(--pg) 70%); border: 1px solid #f1e8d6; border-radius: 16px; padding: 13px 14px; }
.home-hero h1 { margin: 0; font-size: 19px; font-weight: 700; line-height: 1.3; }
.subline { margin: 6px 0 0; color: var(--mut); font-size: 12px; line-height: 1.55; }
.home-label { font-size: 12px; color: var(--mut); font-weight: 500; margin: 2px 2px -2px; }
.starters { display: grid; gap: 8px; flex: 1; min-height: 0; overflow-y: auto; align-content: start; }
.srow { width: 100%; text-align: left; background: var(--card); border: 1px solid var(--line); border-radius: 13px; padding: 11px 13px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2px 10px; }
.srow:active { background: var(--soft); }
.srow-t { font-size: 15px; font-weight: 600; color: var(--ink); }
.srow-b { font-size: 12px; color: var(--mut); grid-column: 1; line-height: 1.4; }
.srow-arrow { grid-row: 1 / span 2; grid-column: 2; color: var(--subtle); font-size: 20px; }
.srow-more { display: flex; align-items: center; justify-content: center; gap: 6px; background: transparent; border: 1px dashed var(--line); color: var(--grnk); font-size: 13px; font-weight: 500; padding: 11px; border-radius: 13px; }
.browse-search { width: 100%; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; font-size: 14px; background: var(--card); margin-bottom: 10px; outline: none; }
.browse-search:focus { border-color: #cfe6da; }
.browse-list { display: grid; gap: 8px; }
.browse-empty { color: var(--mut); font-size: 13px; text-align: center; padding: 16px; }

/* ---------- COMPOSER ---------- */
.composer { display: flex; align-items: flex-end; gap: 8px; background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 7px 7px 7px 14px; }
.composer:focus-within { border-color: #cfe6da; }
.home-composer { margin-top: 2px; }
.composer textarea { flex: 1; border: 0; resize: none; background: transparent; line-height: 1.5; max-height: 120px; padding: 6px 0; outline: none; }
.send { flex: 0 0 auto; width: 36px; height: 36px; border-radius: 50%; background: var(--grn); color: #fff; display: grid; place-items: center; font-size: 18px; font-weight: 700; }
.send:disabled { opacity: .45; }

/* ---------- SESSION ---------- */
.session { gap: 10px; padding-top: max(8px, env(safe-area-inset-top)); height: 100dvh; }
@media (min-width: 460px) { .session { height: min(900px, calc(100dvh - 36px)); } }
.nav { display: flex; align-items: center; gap: 8px; padding: 4px 0 6px; border-bottom: 1px solid var(--line); }
.nav-title { flex: 1; margin: 0; text-align: center; font-weight: 600; font-size: 15px; }
.nav-btn { font-size: 20px; color: var(--ink); padding: 4px 8px; min-width: 40px; }
.nav-btn.text { font-size: 13px; color: var(--mut); }

.understanding { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 11px 12px; max-height: 30dvh; overflow-y: auto; }
.understanding h3 { margin: 0 0 8px; font-size: 12px; font-weight: 600; color: var(--grnk); display: flex; align-items: center; gap: 6px; }
.u-item { display: flex; gap: 7px; font-size: 13px; line-height: 1.45; padding: 4px 0; border-top: 1px solid #f2ebdf; }
.u-item:first-of-type { border-top: 0; }
.u-item .dot { flex: 0 0 auto; margin-top: 2px; font-size: 12px; }
.u-clear .dot { color: var(--grn); }
.u-doubt { color: var(--warnk); }
.u-todo { color: var(--subtle); }
.u-flash { animation: flash 1.2s ease; }
@keyframes flash { 0% { background: var(--cors); } 100% { background: transparent; } }

.feed { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 12px; overflow-y: auto; padding: 4px 0; }
.bubble { max-width: 86%; line-height: 1.55; font-size: 14px; }
.bubble.user { align-self: flex-end; background: var(--grn); color: #fff; border-radius: 14px 14px 4px 14px; padding: 9px 12px; }
.bubble.coach { align-self: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 14px 14px 14px 4px; padding: 11px 12px; }
.coach .reflect { display: flex; align-items: center; gap: 5px; color: var(--mut); font-size: 12px; margin-bottom: 6px; }
.coach .reflect .spark { color: var(--grn); }
.coach .say { margin: 0; }
.coach.loading .dots span { display: inline-block; width: 6px; height: 6px; margin-right: 3px; border-radius: 50%; background: var(--grn); opacity: .35; animation: bp 1.1s infinite; }
.coach.loading .dots span:nth-child(2) { animation-delay: .2s; }
.coach.loading .dots span:nth-child(3) { animation-delay: .4s; }
@keyframes bp { 0%,100% { opacity: .3; } 50% { opacity: 1; } }

/* decision card inside a coach bubble */
.decision { margin-top: 9px; border: 1px solid #cfe6da; border-radius: 12px; overflow: hidden; background: var(--soft); }
.decision .lean { background: linear-gradient(120deg, var(--grns), #f1f8f4); padding: 8px 11px; font-size: 13px; font-weight: 600; color: var(--grnk); }
.decision .reason { padding: 9px 11px; font-size: 13px; line-height: 1.55; }
.decision .confirm { margin: 0 11px 9px; background: var(--warn); color: var(--warnk); border-radius: 9px; padding: 7px 9px; font-size: 12px; }
.decision .boundary { display: flex; align-items: center; gap: 6px; padding: 0 11px 10px; font-size: 12px; color: #a8744e; }
.brief-btn { margin-top: 9px; width: 100%; background: var(--grn); color: #fff; border-radius: 20px; padding: 10px 0; font-size: 14px; font-weight: 600; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip { border: 1px solid #cfe6da; background: var(--grns); color: var(--grnk); border-radius: 999px; padding: 7px 12px; font-size: 13px; }
.chip.muted { background: var(--card); border-color: var(--line); color: var(--mut); }
.chip.advance { background: var(--card); border-color: #cfe6da; color: var(--grn); font-weight: 600; }
.chip:active { transform: scale(.97); }

/* §8.3 — stage progress hint */
.stage-progress { display: flex; align-items: center; gap: 8px; padding: 2px 2px 0; }
.stage-progress .pg-bar { flex: 1; height: 4px; border-radius: 999px; background: var(--line); overflow: hidden; }
.stage-progress .pg-bar span { display: block; height: 100%; border-radius: 999px; background: var(--grn); transition: width .35s ease; }
.stage-progress .pg-t { flex: 0 0 auto; font-size: 11px; color: var(--mut); }

/* §8.2 — guided worksheet card: one field at a time, suggestions + self-fill */
.toolcard { align-self: stretch; border: 1px solid #cfe6da; border-radius: 14px; background: var(--soft); padding: 11px 12px; }
.tool-h { display: flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--grnk); }
.tool-h .tool-x { margin-left: auto; flex: 0 0 auto; font-size: 12px; font-weight: 500; line-height: 1; color: var(--mut); background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; }
.tool-h .tool-x:active { background: var(--soft); }
/* the worksheet lives in a dock pinned above the composer — non-blocking, collapsible, never covers the chat */
.tool-dock { flex: 0 0 auto; }
.tool-dock .toolcard { margin: 0; max-height: 58dvh; overflow-y: auto; animation: dockup .22s ease; }
/* while the worksheet is EXPANDED, hide the competing fixed blocks so the conversation keeps room */
.session.dock-active #chips, .session.dock-active #understanding { display: none; }
@keyframes dockup { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.tool-dock.is-collapsed .toolcard { display: none; }
.tool-dock:not(.is-collapsed) .tool-collapsed { display: none; }
.tool-collapsed { width: 100%; text-align: left; background: var(--grns); border: 1px solid #cfe6da; border-radius: 12px; padding: 11px 13px; font-size: 13px; font-weight: 600; color: var(--grnk); }
.tool-collapsed:active { transform: scale(.99); }
.tool-badge { font-size: 10px; font-weight: 600; color: var(--grn); background: var(--grns); border: 1px solid #cfe6da; border-radius: 6px; padding: 1px 6px; }
.tool-purpose { margin: 6px 0 9px; font-size: 12px; line-height: 1.5; color: var(--mut); }
.tool-qrow { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 9px; }
.tool-q { font-size: 14px; font-weight: 600; color: var(--ink); line-height: 1.4; }
.tool-pg { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 4px; font-size: 11px; color: var(--mut); white-space: nowrap; }
.tool-nav { font-size: 15px; line-height: 1; color: var(--grn); padding: 2px 4px; border-radius: 6px; }
.tool-nav:disabled { color: var(--subtle); }
.tool-opts { display: flex; flex-direction: column; gap: 6px; }
.tool-opt { display: flex; align-items: center; gap: 9px; text-align: left; width: 100%; border: 1px solid var(--line); background: var(--card); border-radius: 11px; padding: 10px 12px; font-size: 14px; color: var(--ink); }
.tool-opt .n { flex: 0 0 auto; width: 20px; height: 20px; border-radius: 6px; background: var(--grns); color: var(--grnk); font-size: 12px; display: inline-flex; align-items: center; justify-content: center; }
.tool-opt.is-on { border-color: var(--grn); background: var(--grns); }
.tool-opt:active { transform: scale(.99); }
.tool-self-input { width: 100%; margin-top: 8px; border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; background: var(--card); font-size: 13px; }
.tool-self-input:focus { outline: none; border-color: var(--grn); }
.tool-acts { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.tool-skip { flex: 0 0 auto; font-size: 12px; color: var(--mut); padding: 8px 2px; }
.tool-send { flex: 1; background: var(--grn); color: #fff; border-radius: 20px; padding: 9px 0; font-size: 13px; font-weight: 600; }
.tool-send:active { transform: scale(.99); }
.tool-rule { margin: 10px 0 0; font-size: 12px; color: var(--mut); }
.tool-rule summary { cursor: pointer; color: var(--grn); }
.tool-rule p { margin: 6px 0 0; line-height: 1.55; }

/* ---------- BRIEF SHEET ---------- */
.sheet { position: fixed; inset: 0; z-index: 30; display: grid; align-items: end; }
@media (min-width: 460px) { .sheet { position: absolute; } }
.sheet-scrim { position: absolute; inset: 0; background: rgba(42,38,34,.4); }
.sheet-panel { position: relative; width: min(100%, 430px); margin: 0 auto; max-height: 86dvh; overflow-y: auto; background: var(--pg); border-radius: 22px 22px 0 0; padding: 10px 16px calc(18px + env(safe-area-inset-bottom)); }
.sheet-handle { width: 34px; height: 4px; border-radius: 3px; background: #e3dbcd; margin: 0 auto 12px; }
.trust { display: flex; align-items: center; gap: 6px; background: var(--cors); color: #9e3a1e; border-radius: 10px; padding: 8px 10px; font-size: 12px; margin: 0 0 12px; }
.sheet-panel h2 { margin: 0 0 12px; font-size: 18px; font-weight: 600; }
.brief-sec { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; margin-bottom: 9px; }
.brief-sec .label { font-size: 11px; color: var(--mut); font-weight: 600; }
.brief-sec.lean { border-color: #cfe6da; background: #f4faf7; }
.brief-sec.lean .label { color: var(--grnk); }
.brief-sec .val { font-size: 14px; line-height: 1.55; margin-top: 3px; }
.brief-sec.confirm { background: var(--warn); border-color: #ead9a6; }
.brief-sec.confirm .label, .brief-sec.confirm .val { color: var(--warnk); }
.brief-step { display: flex; gap: 8px; font-size: 14px; line-height: 1.5; margin-top: 5px; }
.brief-step .n { color: var(--grn); font-weight: 700; }
.brief-actions { display: flex; gap: 9px; margin-top: 6px; }
.brief-actions button { flex: 1; border-radius: 20px; padding: 11px 0; font-size: 14px; font-weight: 600; }
.ghost { border: 1px solid var(--grn); color: var(--grn); background: var(--card); }
.primary { background: var(--grn); color: #fff; }

/* ---------- AUTH (invite register / login) ---------- */
.auth { justify-content: center; }
.auth-card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px 18px; box-shadow: 0 12px 36px rgba(42,38,34,.08); }
.auth-brand { display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.auth-name { margin: 0; font-size: 17px; font-weight: 700; }
.auth-sub { margin: 2px 0 0; font-size: 12px; color: var(--mut); }
.auth-tabs { display: flex; gap: 6px; background: var(--soft); border: 1px solid var(--line); border-radius: 12px; padding: 4px; margin-bottom: 14px; }
.auth-tab { flex: 1; padding: 9px 0; border-radius: 9px; font-size: 13px; font-weight: 600; color: var(--mut); }
.auth-tab.is-on { background: var(--card); color: var(--grnk); box-shadow: 0 1px 3px rgba(42,38,34,.08); }
.auth-form { display: flex; flex-direction: column; gap: 10px; }
.auth-in { width: 100%; border: 1px solid var(--line); border-radius: 12px; padding: 12px 13px; font-size: 15px; background: var(--soft); outline: none; }
.auth-in:focus { border-color: #cfe6da; background: var(--card); }
.auth-err { margin: 0; font-size: 12px; color: var(--danger); background: var(--cors); border-radius: 9px; padding: 8px 10px; }
.auth-submit { margin-top: 4px; background: var(--grn); color: #fff; border-radius: 22px; padding: 13px 0; font-size: 15px; font-weight: 600; }
.auth-submit:disabled { opacity: .55; }

/* ---------- ME (session history) extras ---------- */
.me-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.me-head h2 { margin: 0; }
.me-new { margin-left: auto; flex: none; background: var(--grns); border: 1px solid #cfe6da; color: var(--grnk); font-size: 13px; font-weight: 600; padding: 7px 13px; border-radius: 999px; }
.me-new:active { transform: scale(.98); }
.me-done { font-size: 10px; font-weight: 600; color: var(--mut); background: var(--soft); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; margin-left: 7px; }
.me-logout { width: 100%; margin-top: 14px; background: transparent; border: 1px solid var(--line); color: var(--mut); font-size: 13px; padding: 11px 0; border-radius: 14px; }
.me-logout:active { background: var(--soft); }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; } }