:root {
  --paper: #f1eadf;
  --paper-2: #e8e0d3;
  --ink: #1a1714;
  --ink-soft: #3a342e;
  --muted: #5c564e;
  --faint: #8a8278;
  --line: #d9d0c2;
  --line-strong: #c9bfb0;
  --sprout: #2a5538;
  --sprout-hover: #1e432a;
  --sprout-pale: #e4efe6;
  --sprout-line: #b7d0bc;
  --ok: #1e5a34;
  --ok-bg: #e6f1e8;
  --warn: #6b4e16;
  --warn-bg: #f4ead4;
  --warn-line: #e0c98a;
  --err: #8b2e2e;
  --err-bg: #f6e4e2;
  --card: #faf6ee;
  --code-bg: #1a1714;
  --code-ink: #f1eadf;
  --on-sprout: #f6fff8;

  --font-brand: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", "STSong", "Noto Serif SC", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  --font-ui: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, "Cascadia Mono", Consolas, monospace;

  --fs-2xs: 0.6875rem;
  --fs-xs: 0.75rem;
  --fs-sm: 0.8125rem;
  --fs-body: 0.9375rem;
  --fs-lead: 1.0625rem;
  --fs-h2: 1.125rem;
  --fs-h1: 1.75rem;
  --fs-display: 2.25rem;
  --fs-composer: 1.25rem;

  --lh-tight: 1.25;
  --lh-body: 1.7;
  --lh-loose: 1.85;

  --track-brand: 0.18em;
  --track-ui: 0.04em;
  --track-slogan: 0.08em;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  --shell: 40rem;
  --measure: 38rem;

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-pill: 999px;

  --shadow-soft: 0 1px 0 rgba(26, 23, 20, 0.04), 0 12px 32px rgba(26, 23, 20, 0.05);
  --shadow-focus: 0 0 0 3px color-mix(in srgb, var(--sprout) 28%, transparent);

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 180ms;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--paper);
  color: var(--ink);
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-ui);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  background:
    radial-gradient(1200px 480px at 50% -120px, color-mix(in srgb, var(--card) 70%, transparent), transparent 70%),
    var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

body.page-connect { --shell: 40rem; }
body.page-logs { --shell: 44rem; }
body.page-auth {
  --shell: 24.5rem;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

a {
  color: var(--sprout);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { color: var(--sprout-hover); }

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button { -webkit-tap-highlight-color: transparent; }

.sr,
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  width: auto;
  height: auto;
  margin: 0;
  clip: auto;
  overflow: visible;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-sm);
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
}

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.mark {
  display: block;
  width: 0.85rem;
  height: 1.05rem;
  color: var(--sprout);
  flex-shrink: 0;
}

.shell {
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
  padding: var(--space-6) 0 var(--space-8);
}

body.page-auth .shell {
  padding-top: var(--space-7);
  padding-bottom: var(--space-7);
}

/* ——— masthead ——— */

.masthead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--line);
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-brand);
  font-size: var(--fs-body);
  font-weight: 600;
  letter-spacing: var(--track-brand);
  line-height: 1;
}
.brand-lockup:hover { color: var(--ink); text-decoration: none; }
.brand-lockup .mark { width: 0.7rem; height: 0.88rem; }

.masthead-end {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  min-width: 0;
}

.masthead nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.15rem;
  align-items: center;
  font-size: var(--fs-sm);
  letter-spacing: var(--track-ui);
  color: var(--muted);
}

.masthead nav a {
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 0.1rem;
  border-bottom: 1px solid transparent;
}
.masthead nav a:hover { color: var(--ink); }
.masthead nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--sprout);
}

.account {
  position: relative;
  flex-shrink: 0;
}

.account-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  max-width: 16rem;
  margin: 0;
  padding: 0.18rem 0.5rem 0.18rem 0.18rem;
  list-style: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  cursor: pointer;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  letter-spacing: var(--track-ui);
  line-height: 1;
  user-select: none;
}
.account-trigger::-webkit-details-marker { display: none; }
.account-trigger::marker { content: none; display: none; }
.account-trigger:hover { border-color: var(--line-strong); }
.account[open] .account-trigger { border-color: var(--line-strong); }

.account-avatar {
  display: grid;
  place-items: center;
  width: 1.45rem;
  height: 1.45rem;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--paper-2);
  color: #8a4534;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0;
}

.account-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-caret {
  width: 0.7rem;
  height: 0.7rem;
  flex-shrink: 0;
  color: var(--faint);
  transition: transform var(--dur) var(--ease);
}
.account[open] .account-caret { transform: rotate(180deg); }

.account-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.4rem);
  z-index: 20;
  min-width: max(100%, 8.5rem);
  padding: 0.28rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-soft), 0 10px 28px rgba(26, 23, 20, 0.08);
}

.account-logout {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  margin: 0;
  padding: 0.55rem 0.7rem;
  background: none;
  border: 0;
  border-radius: var(--r-sm);
  color: #8a4534;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  letter-spacing: var(--track-ui);
  line-height: 1.2;
  white-space: nowrap;
}
.account-logout:hover { background: var(--err-bg); }
.account-logout svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.inline { display: inline; margin: 0; }

.linkish {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: var(--muted);
  font-size: inherit;
  letter-spacing: inherit;
  text-decoration: none;
}
.linkish:hover { color: var(--ink); }

/* ——— type ——— */

.kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-brand);
  font-style: italic;
  font-size: var(--fs-xs);
  letter-spacing: var(--track-slogan);
  color: var(--muted);
}

.page-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-brand);
  font-size: var(--fs-h1);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: 0.06em;
}

.lead {
  margin: 0 0 var(--space-6);
  max-width: 36em;
  font-size: var(--fs-lead);
  line-height: var(--lh-body);
  color: var(--ink-soft);
}

.note,
.hint,
.muted {
  color: var(--muted);
  line-height: var(--lh-body);
}

.hint {
  margin: 0;
  font-size: var(--fs-sm);
  max-width: 34em;
}

.hint a { color: var(--sprout); }

.section-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-brand);
  font-size: var(--fs-h2);
  font-weight: 600;
  letter-spacing: 0.08em;
}

/* ——— forms & buttons ——— */

.field {
  display: grid;
  gap: 0.4rem;
  font-size: var(--fs-sm);
  color: var(--muted);
  letter-spacing: var(--track-ui);
}

.field input {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  padding: 0.55rem 0 0.45rem;
  font-size: 1rem;
  color: var(--ink);
  outline: none;
  width: 100%;
  box-shadow: none;
}
.field input:hover { border-bottom-color: var(--ink-soft); }
.field input:focus,
.field input:focus-visible {
  border-bottom-color: var(--sprout);
  box-shadow: 0 1px 0 var(--sprout);
  outline: none;
}
.field input:-webkit-autofill {
  -webkit-box-shadow: 0 0 0 32px var(--card) inset;
  -webkit-text-fill-color: var(--ink);
  caret-color: var(--sprout);
}

a.btn {
  text-decoration: none;
  color: var(--on-sprout);
}
a.btn:hover { color: var(--on-sprout); }

.btn,
button[type="submit"]:not(.linkish):not(.copy):not(.danger):not(.account-logout) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--sprout);
  color: var(--on-sprout);
  border: 1px solid var(--sprout);
  border-radius: var(--r-pill);
  padding: 0.55rem 1.35rem;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  letter-spacing: 0.12em;
  line-height: 1.2;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn:hover,
button[type="submit"]:not(.linkish):not(.copy):not(.danger):not(.account-logout):hover {
  background: var(--sprout-hover);
  border-color: var(--sprout-hover);
}

.copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0.28rem 0.75rem;
  background: transparent;
  color: var(--sprout);
  border: 1px solid var(--sprout-line);
  border-radius: var(--r-pill);
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  letter-spacing: var(--track-ui);
  line-height: 1.2;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.copy:hover {
  background: var(--sprout-pale);
  text-decoration: none;
}
.copy.is-copied {
  background: var(--ok-bg);
  border-color: var(--sprout-line);
  color: var(--ok);
}

.danger {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: var(--err);
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  letter-spacing: var(--track-ui);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}
.danger:hover { color: #6a1f1f; }

/* ——— banners ——— */

.banner {
  border-radius: var(--r-md);
  padding: 0.9rem 1rem;
  margin: 0 0 var(--space-5);
  font-size: var(--fs-sm);
  line-height: var(--lh-body);
}
.banner.error {
  background: var(--err-bg);
  color: var(--err);
}
.banner.ok {
  background: var(--ok-bg);
  color: var(--ok);
}

.callout {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1rem 1.1rem;
  margin: 0 0 var(--space-6);
  box-shadow: var(--shadow-soft);
}
.callout p { margin: 0; }
.callout p + p { margin-top: 0.55rem; }
.callout strong {
  font-weight: 600;
  color: var(--ink);
}

.token-once {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: var(--r-md);
  padding: 1.1rem 1.15rem 1.15rem;
  margin: 0 0 var(--space-6);
  box-shadow: var(--shadow-soft);
}
.token-once h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-brand);
  font-size: var(--fs-h2);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--warn);
}
.token-once p {
  margin: 0 0 var(--space-3);
  color: var(--warn);
  font-size: var(--fs-sm);
}
.token-once .code-panel { margin: 0; }
.token-once .code-panel pre {
  background: var(--ink);
  color: var(--warn-bg);
  word-break: break-all;
}

/* ——— capture ——— */

.composer {
  margin-bottom: var(--space-4);
}

.composer-field {
  position: relative;
}

.composer textarea {
  display: block;
  width: 100%;
  min-height: min(42vh, 22rem);
  resize: vertical;
  margin: 0;
  padding: 0.2rem 0.1rem 1.4rem;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  font-family: var(--font-brand);
  font-size: var(--fs-composer);
  line-height: var(--lh-loose);
  letter-spacing: 0.01em;
  outline: none;
  box-shadow: none;
  caret-color: var(--sprout);
}
.composer textarea:hover { border-bottom-color: var(--line-strong); }
.composer textarea:focus,
.composer textarea:focus-visible {
  border-bottom-color: var(--sprout);
  box-shadow: 0 1px 0 var(--sprout);
  outline: none;
}

.composer-hint {
  position: absolute;
  inset: 0.2rem 0.1rem auto;
  margin: 0;
  pointer-events: none;
  color: var(--muted);
  font-family: var(--font-brand);
  font-size: var(--fs-composer);
  font-style: italic;
  line-height: var(--lh-loose);
  letter-spacing: 0.01em;
  transition: opacity var(--dur) var(--ease);
}
.composer-hint.is-hidden {
  opacity: 0;
  visibility: hidden;
}
.composer-hint.is-hidden .agent-reel {
  animation-play-state: paused;
}

.agent-slot {
  position: relative;
  display: inline-block;
  vertical-align: baseline;
  padding-right: 0.12em;
}

.agent-sizer {
  visibility: hidden;
  white-space: nowrap;
}

.agent-window {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.agent-reel {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  height: 500%;
  animation: agent-cycle 12s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.agent-reel > span {
  flex: 0 0 20%;
  width: 100%;
  text-align: center;
  white-space: nowrap;
}

@keyframes agent-cycle {
  0%, 22% { transform: translateY(0%); }
  25%, 47% { transform: translateY(-20%); }
  50%, 72% { transform: translateY(-40%); }
  75%, 97% { transform: translateY(-60%); }
  100% { transform: translateY(-80%); }
}

.composer-bar {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.composer-bar .btn,
.composer-bar button[type="submit"] {
  flex-shrink: 0;
  letter-spacing: 0.22em;
  padding: 0.7rem 1.6rem;
}

.skill-heading {
  color: var(--muted);
  font-size: var(--fs-sm);
  font-family: var(--font-ui);
  font-weight: 500;
  letter-spacing: 0.16em;
  margin-top: var(--space-6);
}

.empty {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-6) 0 var(--space-4);
  color: var(--muted);
}
.empty .mark {
  width: 1.1rem;
  height: 1.35rem;
  opacity: 0.7;
}
.empty p {
  margin: 0;
  max-width: 22em;
  font-family: var(--font-brand);
  font-size: var(--fs-lead);
  font-style: italic;
  line-height: var(--lh-body);
  color: var(--ink-soft);
}

.pill {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-ui);
  font-size: var(--fs-2xs);
  letter-spacing: 0.08em;
  border-radius: var(--r-pill);
  padding: 0.12rem 0.5rem 0.14rem;
  background: var(--paper-2);
  color: var(--muted);
  line-height: 1.3;
}
.pill.failed {
  background: var(--err-bg);
  color: var(--err);
}

/* ——— connect ——— */

.connect-add { margin-bottom: var(--space-8); }

.connect-list-head {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-2);
}

.prompt-card {
  background: var(--card);
  border: 1px solid var(--sprout-line);
  border-radius: var(--r-md);
  padding: 0;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.prompt-card-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding: 0.55rem 0.85rem 0.5rem 1.05rem;
  background: var(--sprout-pale);
  color: var(--sprout);
  font-size: var(--fs-2xs);
  letter-spacing: 0.08em;
}

.prompt-line {
  margin: 0;
  padding: 1.05rem 1.1rem 1.15rem;
  font-family: var(--font-brand);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  line-height: var(--lh-body);
  overflow-wrap: anywhere;
}

.prompt-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.25rem;
  margin-top: var(--space-4);
}

.connection-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.connection-list li {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.connection-list li.is-paused { opacity: 0.62; }

.connection-head {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.connection-list strong {
  font-family: var(--font-brand);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.connection-list .muted {
  margin: 0.25rem 0 0;
  font-size: var(--fs-xs);
}

.connection-log {
  margin: 0.35rem 0 0;
  font-size: var(--fs-sm);
}

.connection-log a { color: var(--sprout); }

.connection-actions {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  flex-shrink: 0;
  padding-top: 0.15rem;
}

.log-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.log-entry {
  border-top: 1px solid var(--line);
  padding: 1.15rem 0 1.35rem;
}

.log-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.log-turn + .log-turn { margin-top: var(--space-3); }

.log-label {
  margin: 0 0 0.25rem;
  font-size: var(--fs-2xs);
  letter-spacing: 0.14em;
  color: var(--sprout);
}

.log-turn pre {
  margin: 0;
  padding: 0.75rem 0.85rem;
  background: var(--card);
  color: var(--ink);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.kicker a { color: inherit; }

/* ——— auth ——— */

.auth {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.brand {
  text-align: center;
  margin: 0 0 var(--space-6);
}
.brand .mark {
  width: 1.15rem;
  height: 1.45rem;
  margin: 0 auto 1.1rem;
}
.brand h1 {
  margin: 0 0 0.55rem;
  font-family: var(--font-brand);
  font-size: var(--fs-display);
  font-weight: 600;
  letter-spacing: var(--track-brand);
  line-height: 1.15;
}
.brand .slogan {
  margin: 0 0 0.7rem;
  font-family: var(--font-brand);
  font-style: italic;
  font-size: var(--fs-sm);
  letter-spacing: var(--track-slogan);
  color: var(--muted);
}
.brand .positioning {
  margin: 0;
  color: var(--ink-soft);
  font-size: var(--fs-body);
}

.auth-card {
  display: grid;
  gap: var(--space-5);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1.4rem 1.35rem 1.45rem;
  box-shadow: var(--shadow-soft);
}

.auth-card button[type="submit"] {
  width: 100%;
  padding: 0.7rem 1.2rem;
  letter-spacing: 0.18em;
}

.switch {
  text-align: center;
  margin: var(--space-5) 0 0;
  color: var(--muted);
  font-size: var(--fs-sm);
}

/* ——— a11y ——— */

:focus-visible {
  outline: 2px solid var(--sprout);
  outline-offset: 3px;
}

.field input:focus-visible,
.composer textarea:focus-visible {
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .agent-reel {
    animation: none !important;
  }
}

/* ——— responsive ——— */

@media (max-width: 720px) {
  .connection-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
}

@media (max-width: 560px) {
  :root {
    --fs-display: 1.9rem;
    --fs-h1: 1.5rem;
    --fs-composer: 1.125rem;
  }

  .shell {
    width: min(100% - 1.75rem, var(--shell));
    padding-top: var(--space-5);
  }

  .masthead {
    align-items: flex-start;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    row-gap: var(--space-3);
  }
  .masthead-end {
    width: 100%;
    justify-content: flex-end;
  }

  .composer textarea {
    min-height: 38vh;
    font-size: 1.0625rem;
  }
  .composer-hint {
    font-size: 1.0625rem;
  }

  .composer-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .composer-bar button[type="submit"] {
    width: 100%;
  }

  .token-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .verify {
    align-items: flex-start;
  }

  .account-name { max-width: 10ch; }
}