/* ── Layout ──────────────────────────────────────────────────────────────── */
:root {
  --bg: #0f0f11;
  --surface: #1a1a1f;
  --surface2: #22222a;
  --border: #2e2e38;
  --text: #e8e8f0;
  --text-muted: #888898;
  --accent: #6c63ff;
  --accent-dim: rgba(108,99,255,.15);
  --green: #4ade80;
  --red: #f87171;
  --yellow: #facc15;
  --radius: 10px;
  --font-mono: 'JetBrains Mono', 'Fira Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body.chat-body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 system-ui, sans-serif;
  height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr;
  grid-template-columns: 1fr 260px;
  grid-template-areas:
    "header  header"
    "main    catalog";
  overflow: hidden;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.chat-header {
  grid-area: header;
  display: flex; align-items: center; justify-content: space-between;
  padding: .5rem 1.2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 48px;
}
.chat-header__brand { font-weight: 700; font-size: 1.05rem; }
.chat-header__meta  { display: flex; gap: .6rem; align-items: center; }

.chip {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 20px; padding: .15rem .6rem; font-size: .78rem;
  color: var(--text-muted); text-decoration: none;
}
.chip--muted:hover { color: var(--text); border-color: var(--accent); }

/* ── Main ────────────────────────────────────────────────────────────────── */
.chat-main {
  grid-area: main;
  display: flex; flex-direction: column;
  overflow: hidden;
}

/* ── Conversation ────────────────────────────────────────────────────────── */
.conversation {
  flex: 1; overflow-y: auto;
  padding: 1.4rem 1.2rem .6rem;
  display: flex; flex-direction: column; gap: 1rem;
}

.welcome { text-align: center; margin: auto; max-width: 440px; opacity: .7; }
.welcome h1 { font-size: 1.4rem; margin-bottom: .4rem; }
.welcome em { color: var(--accent); font-style: normal; }

/* ── Bubbles ─────────────────────────────────────────────────────────────── */
.user-bubble {
  align-self: flex-end; max-width: 72%;
  background: var(--accent-dim); border: 1px solid var(--accent);
  border-radius: var(--radius) var(--radius) 2px var(--radius);
  padding: .5rem .9rem; white-space: pre-wrap; word-break: break-word;
}

.agent-bubble {
  display: flex; gap: .6rem; align-items: flex-start; max-width: 90%;
}
.agent-bubble__avatar { font-size: 1.3rem; flex-shrink: 0; margin-top: .1rem; }
.agent-bubble__body   { display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.agent-bubble__text   { white-space: pre-wrap; word-break: break-word; }
.agent-bubble__error  { color: var(--red); }

/* ── Plan preview ────────────────────────────────────────────────────────── */
.plan-preview {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .5rem .8rem; font-size: .82rem;
  color: var(--text-muted);
}
.plan-preview ol  { margin-left: 1.2rem; }
.plan-preview li  { margin: .15rem 0; }
.plan-preview code { color: var(--accent); font-family: var(--font-mono); }

/* ── Tool call / trace ───────────────────────────────────────────────────── */
.tool-call {
  font-size: .82rem; color: var(--text-muted);
  display: flex; align-items: center; gap: .4rem;
}
.tool-call code { color: var(--accent); font-family: var(--font-mono); }
.spinner { animation: spin 1s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.tool-error { color: var(--red); font-size: .8rem; }

.tool-trace {
  font-size: .82rem; color: var(--text-muted); display: flex; gap: .3rem; flex-wrap: wrap;
}
.tool-trace__name { color: var(--accent); font-family: var(--font-mono); }
.tool-trace__arrow { color: var(--text-muted); }
.tool-trace__result { color: var(--text); }

/* ── Paper / Patent cards ─────────────────────────────────────────────────── */
.paper-list, .patent-list {
  display: flex; flex-direction: column; gap: .6rem; width: 100%;
}

.paper-card, .patent-card {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .65rem .8rem;
  display: flex; gap: .65rem; align-items: flex-start;
  transition: border-color .15s;
}
.paper-card:hover, .patent-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }

/* Vertical relevance bar on the left */
.paper-card__side, .patent-card__side { flex-shrink: 0; display: flex; align-items: flex-start; padding-top: .1rem; }
.rel-bar {
  display: flex; flex-direction: column; align-items: center; gap: .15rem;
  font-size: .68rem; color: var(--text-muted); width: 28px;
}
.rel-bar__track {
  width: 4px; height: 40px; background: var(--border); border-radius: 2px;
  display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden;
}
.rel-bar__fill { width: 100%; background: var(--accent); border-radius: 2px; transition: height .3s; }
.rel-bar__pct  { font-size: .65rem; color: var(--text-muted); }

/* Body */
.paper-card__body, .patent-card__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: .25rem; }

/* Title */
.paper-card__title, .patent-card__title {
  color: var(--accent); text-decoration: none; font-size: .87rem; font-weight: 600;
  display: block; line-height: 1.35;
}
.paper-card__title:hover, .patent-card__title:hover { text-decoration: underline; }
.paper-card__exticon, .patent-card__exticon { font-size: .75rem; opacity: .6; margin-left: .2rem; }

/* TLDR */
.paper-card__tldr, .patent-card__tldr {
  font-size: .81rem; color: var(--text-muted); line-height: 1.4;
}

/* Collapsible abstract */
.paper-card__abstract, .patent-card__abstract { margin-top: .1rem; }
.paper-card__abs-toggle, .patent-card__abs-toggle {
  font-size: .75rem; color: var(--text-muted); cursor: pointer; list-style: none;
  display: inline-flex; align-items: center; gap: .25rem; user-select: none;
}
.paper-card__abs-toggle::-webkit-details-marker,
.patent-card__abs-toggle::-webkit-details-marker { display: none; }
.paper-card__abs-toggle::before, .patent-card__abs-toggle::before { content: '▶'; font-size: .6rem; }
details[open] .paper-card__abs-toggle::before,
details[open] .patent-card__abs-toggle::before { content: '▼'; }
.paper-card__abs-toggle:hover, .patent-card__abs-toggle:hover { color: var(--text); }
.paper-card__abs-text, .patent-card__abs-text {
  font-size: .79rem; color: var(--text-muted); line-height: 1.5;
  margin-top: .3rem; padding: .4rem .5rem;
  border-left: 2px solid var(--border); border-radius: 0 4px 4px 0;
}

/* Meta row */
.paper-card__meta, .patent-card__meta {
  font-size: .74rem; color: var(--text-muted);
  display: flex; gap: .4rem; flex-wrap: wrap; align-items: center;
}
.paper-card__venue, .patent-card__assignee { color: var(--yellow); font-weight: 500; }
.paper-card__source, .patent-card__source  { color: var(--text-muted); font-style: italic; }
.paper-card__cites  { color: var(--green); }

/* CPC chips */
.patent-card__cpc { display: flex; flex-wrap: wrap; gap: .25rem; }
.cpc-chip {
  font-family: var(--font-mono); font-size: .68rem; color: var(--text-muted);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 3px; padding: .05rem .3rem;
}

/* Actions row */
.paper-card__actions, .patent-card__actions {
  display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; margin-top: .1rem;
}

/* DOI badge (click-to-copy) */
.paper-card__doi {
  font-family: var(--font-mono); font-size: .7rem; color: var(--text-muted);
  background: none; border: 1px solid var(--border); border-radius: 3px;
  padding: .1rem .35rem; cursor: pointer; max-width: 220px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.paper-card__doi:hover { border-color: var(--accent); color: var(--accent); }
.paper-card__doi--copied { color: var(--green) !important; border-color: var(--green) !important; }

/* Patent ID badge (click-to-copy) */
.patent-card__id {
  font-family: var(--font-mono); font-size: .75rem; color: var(--green);
  background: none; border: 1px solid color-mix(in srgb, var(--green) 35%, transparent);
  border-radius: 3px; padding: .1rem .35rem; cursor: pointer;
}
.patent-card__id:hover { background: color-mix(in srgb, var(--green) 10%, transparent); }
.patent-card__id--copied { opacity: .7; }

/* Open ↗ link */
.paper-card__open, .patent-card__open {
  font-size: .74rem; color: var(--text-muted); text-decoration: none;
  border: 1px solid var(--border); border-radius: 4px; padding: .15rem .4rem;
}
.paper-card__open:hover, .patent-card__open:hover { border-color: var(--accent); color: var(--accent); }

/* Explore / Analyse button */
.paper-card__followup, .patent-card__followup {
  background: none; border: 1px solid var(--border); color: var(--text-muted);
  border-radius: 4px; padding: .15rem .4rem; font-size: .74rem; cursor: pointer;
}
.paper-card__followup:hover, .patent-card__followup:hover {
  border-color: var(--accent); color: var(--accent);
}

/* ── SMILES table ────────────────────────────────────────────────────────── */
.smiles-table { width: 100%; overflow-x: auto; }
.smiles-table table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.smiles-table th, .smiles-table td {
  padding: .3rem .5rem; border-bottom: 1px solid var(--border); text-align: left;
}
.smiles-table th { color: var(--text-muted); font-weight: 600; }
.smiles-table__use {
  background: var(--accent-dim); border: 1px solid var(--accent);
  color: var(--accent); border-radius: 4px; padding: .15rem .4rem; font-size: .75rem; cursor: pointer;
}

/* ── Mol structure ───────────────────────────────────────────────────────── */
mol-structure { display: inline-block; }
.mol-structure__card {
  display: inline-flex; flex-direction: column; align-items: center;
  background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: .4rem; cursor: pointer; gap: .2rem;
}
.mol-structure__card:hover { border-color: var(--accent); }
.mol-structure__svg svg { max-width: 220px; max-height: 160px; display: block; }
.mol-structure__smiles  { font-family: var(--font-mono); font-size: .7rem; color: var(--text-muted); }
.mol-structure__label   { font-size: .78rem; font-weight: 600; }
.mol-structure__use     { background: none; border: 1px solid var(--border); color: var(--accent); border-radius: 4px; padding: .15rem .4rem; font-size: .72rem; cursor: pointer; }
.mol-structure--invalid, .mol-structure--error { color: var(--text-muted); font-size: .78rem; font-family: var(--font-mono); }

/* Mol modal */
.mol-modal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; }
.mol-modal__backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.7); }
.mol-modal__box {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem; z-index: 1; display: flex; flex-direction: column; gap: .6rem;
}
.mol-modal__close { position: absolute; top: .5rem; right: .7rem; background: none; border: none; color: var(--text-muted); font-size: 1rem; cursor: pointer; }
.mol-modal__svg svg { max-width: 400px; max-height: 300px; }
.mol-modal__smiles { font-family: var(--font-mono); font-size: .8rem; color: var(--text-muted); word-break: break-all; }

/* ── Feature card ────────────────────────────────────────────────────────── */
.feature-card {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .6rem; display: flex; flex-direction: column; gap: .5rem;
}
.feature-card__header { display: flex; align-items: center; gap: .7rem; }
.feature-card__smiles { font-family: var(--font-mono); font-size: .75rem; color: var(--text-muted); }
.feature-card__grid   { display: grid; grid-template-columns: auto 1fr; gap: .15rem .5rem; font-size: .82rem; }
.feature-card__grid dt { color: var(--text-muted); }
.feature-card__grid dd { font-weight: 600; }

/* ── Stock suggestions ───────────────────────────────────────────────────── */
.stock-chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.stock-chip  { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius); padding: .4rem; display: flex; gap: .5rem; align-items: flex-start; }
.stock-chip__mol mol-structure { font-size: .7rem; }
.stock-chip__info { flex: 1; font-size: .8rem; }
.stock-chip__info strong { display: block; }
.stock-chip__info code { font-family: var(--font-mono); font-size: .72rem; color: var(--text-muted); }
.stock-chip__actions { display: flex; flex-direction: column; gap: .2rem; }
.stock-chip__accept { background: var(--accent-dim); border: 1px solid var(--accent); color: var(--accent); border-radius: 4px; padding: .15rem .4rem; font-size: .72rem; cursor: pointer; }
.stock-chip__reject { background: none; border: 1px solid var(--border); color: var(--text-muted); border-radius: 4px; padding: .15rem .4rem; font-size: .72rem; cursor: pointer; }

/* ── RetroPlan component ─────────────────────────────────────────────────── */
retro-plan { display: block; }
.retro-plan {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .7rem; display: flex; flex-direction: column; gap: .5rem;
}
.retro-plan__header { display: flex; align-items: center; gap: .5rem; font-size: .9rem; }
.retro-plan__icon { font-size: 1.1rem; }
.retro-plan__status {
  margin-left: auto; font-size: .7rem; font-weight: 700; padding: .15rem .45rem;
  border-radius: 10px; text-transform: uppercase; letter-spacing: .04em;
}
.retro-plan__status--planning { background: rgba(99,102,241,.15); color: #818cf8; }
.retro-plan__status--done     { background: rgba(34,197,94,.15); color: #4ade80; }
.retro-plan__status--error    { background: rgba(239,68,68,.15); color: #f87171; }

.retro-plan__spinner {
  width: 12px; height: 12px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.retro-plan__targets { display: flex; flex-wrap: wrap; gap: .3rem; align-items: center; font-size: .8rem; }
.retro-plan__label { color: var(--text-muted); font-size: .75rem; }
.retro-plan__smiles-chip {
  background: var(--surface); border: 1px solid var(--border); border-radius: 4px;
  padding: .1rem .4rem; font-family: var(--font-mono); font-size: .72rem; color: var(--text-muted);
}
.retro-plan__status-row { display: flex; align-items: center; gap: .6rem; }
.retro-plan__job-id { font-family: var(--font-mono); font-size: .7rem; color: var(--text-muted); }

.retro-plan__explanation { font-size: .84rem; line-height: 1.5; }
.retro-plan__section-title { font-size: .75rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .3rem; }

.retro-plan__intermediate-grid { display: flex; flex-wrap: wrap; gap: .5rem; }
.retro-plan__intermediate {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: .35rem; display: flex; flex-direction: column; align-items: center; gap: .2rem; min-width: 80px;
}
.retro-plan__im-smiles { font-family: var(--font-mono); font-size: .65rem; color: var(--text-muted); max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.retro-plan__im-score  { font-size: .7rem; color: #4ade80; }

.retro-plan__error { font-size: .82rem; color: var(--text-muted); }
.retro-plan__dev-note { display: block; background: rgba(251,191,36,.07); border: 1px solid rgba(251,191,36,.25); color: #fbbf24; border-radius: 4px; padding: .4rem .6rem; font-size: .8rem; }
.retro-plan__dev-note code { background: rgba(251,191,36,.15); border-radius: 3px; padding: .1rem .3rem; font-family: var(--font-mono); font-size: .75rem; }

.retro-plan__rationale { font-size: .82rem; }
.retro-plan__rationale summary { color: var(--text-muted); cursor: pointer; font-size: .78rem; font-weight: 600; }
.retro-plan__rationale p { margin: .4rem 0 0; line-height: 1.5; }
.retro-plan__footer { display: flex; justify-content: flex-end; }

/* SMILES table — valid/invalid badge */
.smiles-table__badge { font-size: .68rem; padding: .1rem .35rem; border-radius: 8px; font-weight: 600; }
.smiles-table__badge--valid   { background: rgba(34,197,94,.15); color: #4ade80; }
.smiles-table__badge--invalid { background: rgba(239,68,68,.15); color: #f87171; }

/* ── Paste preview ───────────────────────────────────────────────────────── */
.paste-preview {
  padding: 0 1.2rem; display: flex; gap: .5rem; flex-wrap: wrap; min-height: 0;
}
.preview-chip {
  background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: .3rem; display: flex; align-items: center; gap: .3rem; position: relative;
}
.preview-chip--unresolved { color: var(--text-muted); font-size: .78rem; padding: .3rem .6rem; }
.preview-chip__dismiss {
  background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: .8rem;
}
.preview-chip__ctx { cursor: pointer; }

/* ── Composer ────────────────────────────────────────────────────────────── */
.composer {
  padding: .7rem 1.2rem 1rem;
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: .4rem;
}
.composer__input {
  width: 100%; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text); padding: .6rem .9rem;
  font: inherit; resize: none; outline: none;
}
.composer__input:focus { border-color: var(--accent); }
.composer__controls { display: flex; justify-content: flex-end; }
.composer__send {
  background: var(--accent); color: #fff; border: none;
  border-radius: var(--radius); padding: .45rem 1.1rem; font: inherit; cursor: pointer;
}
.composer__send:disabled { opacity: .5; cursor: not-allowed; }

/* ── Catalog ─────────────────────────────────────────────────────────────── */
.catalog {
  grid-area: catalog;
  background: var(--surface); border-left: 1px solid var(--border);
  overflow-y: auto; display: flex; flex-direction: column;
}
.catalog__header {
  padding: .7rem .9rem .4rem; font-size: .82rem; font-weight: 600;
  color: var(--text-muted); display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.catalog__filters { display: flex; gap: .3rem; }
.filter-btn {
  background: none; border: 1px solid var(--border); color: var(--text-muted);
  border-radius: 12px; padding: .1rem .5rem; font-size: .72rem; cursor: pointer;
}
.filter-btn--active { border-color: var(--accent); color: var(--accent); }

.catalog-list { padding: .5rem; display: flex; flex-direction: column; gap: .4rem; }
.catalog-card {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; padding: .45rem .6rem; display: grid;
  grid-template: "icon name btn" auto "icon desc btn" auto / 1.4rem 1fr auto;
  gap: 0 .4rem; align-items: center;
}
.catalog-card__icon { grid-area: icon; font-size: 1rem; }
.catalog-card__name { grid-area: name; font-size: .82rem; font-weight: 600; }
.catalog-card__desc { grid-area: desc; font-size: .72rem; color: var(--text-muted); }
.catalog-card__add  {
  grid-area: btn; background: none; border: 1px solid var(--border);
  color: var(--text-muted); border-radius: 4px; padding: .1rem .35rem; font-size: .72rem; cursor: pointer;
}
.catalog-card__add:hover { border-color: var(--accent); color: var(--accent); }
.loading { font-size: .82rem; color: var(--text-muted); padding: .5rem; }
.empty   { font-size: .82rem; color: var(--text-muted); }

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }