/* ── PEHero chat app (light parchment + forest) ───────────────────── */

:root {
    color-scheme: light;
    --bg:       #F7F6F1;
    --bg-elev:  #FFFFFF;
    --bg-raise: #EFEDE4;
    --ink:      #14231B;
    --ink-muted:#415046;
    --ink-dim:  #7A867E;
    --line:     #E3DFD2;
    --line-br:  #CFC8B4;
    --accent:   #1F5D43;
    --accent-dim:#CFE5DA;
    --red:      #B83A3A;
    --green:    #1F6B45;
}

html, body { height: 100%; background: var(--bg); color: var(--ink); overflow: hidden; }
* { box-sizing: border-box; }

/* ── App grid ── */
.app {
    display: grid;
    grid-template-columns: 300px 1fr;
    height: 100vh;
    padding-right: 420px;
    transition: padding-right .3s ease;
}
.app.pane-closed { padding-right: 0; }

/* ── Left pane ── */
.left-pane {
    background: var(--bg-elev);
    border-right: 1px solid var(--line);
    display: flex; flex-direction: column;
    overflow: hidden;
    z-index: 200;
}
.left-header {
    padding: .9rem 1.1rem;
    border-bottom: 1px solid var(--line);
    display: flex; align-items: center; gap: .65rem;
}
.brand-link { display: flex; align-items: center; color: var(--ink); text-decoration: none; font-weight: 600; gap: .5rem; }
.brand-mark { color: var(--accent); }
.brand-badge { font-size: .6rem; font-weight: 600; color: var(--accent); background: var(--accent-dim); padding: .15rem .45rem; border-radius: 4px; letter-spacing: .08em; text-transform: uppercase; }
.left-body {
    flex: 1; overflow-y: auto; padding: .75rem .7rem; scrollbar-width: thin;
}
.left-hr { border: none; border-top: 1px solid var(--line); margin: .9rem 0 .6rem; }
.section-label {
    font-size: .62rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: .14em; color: var(--ink-dim); padding: 0 .4rem; display: block; margin-bottom: .35rem;
}
.new-chat-btn {
    width: 100%; padding: .55rem; background: var(--accent); color: var(--bg);
    border: none; border-radius: .5rem; font-weight: 600; cursor: pointer; font-size: .78rem;
    margin-bottom: .75rem;
}
.new-chat-btn:hover { background: var(--ink); }

.session-list { display: flex; flex-direction: column; gap: .2rem; }
.sessions-empty { font-size: .72rem; color: var(--ink-dim); padding: .4rem; }

.chat-history-item {
    display: flex; align-items: center; gap: .45rem; padding: .35rem .5rem;
    background: transparent; border: none; color: var(--ink-muted); text-align: left;
    font-size: .74rem; cursor: pointer; border-radius: .4rem; transition: background .15s, color .15s;
    width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.chat-history-item:hover { background: var(--bg-raise); color: var(--ink); }
.chat-history-item.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }
.chat-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--line-br); flex-shrink: 0; }
.chat-dot.active { background: var(--accent); }
.chat-session-title { overflow: hidden; text-overflow: ellipsis; }

/* Agent browser */
.agent-browser { display: flex; flex-direction: column; gap: .25rem; }
.agent-group {}
.cat-toggle {
    display: flex; align-items: center; gap: .45rem;
    width: 100%; padding: .4rem .5rem; background: transparent; border: none; color: var(--ink);
    font-size: .76rem; font-weight: 600; cursor: pointer; border-radius: .4rem;
    transition: background .15s;
}
.cat-toggle:hover { background: var(--bg-raise); }
.cat-icon { color: var(--accent); width: 1rem; }
.cat-name { flex: 1; text-align: left; }
.cat-count { color: var(--ink-dim); font-size: .68rem; font-weight: 400; }
.cat-arrow { color: var(--ink-dim); font-size: .62rem; transition: transform .2s; }
.cat-toggle.open .cat-arrow { transform: rotate(90deg); }

.agent-list { display: none; padding: .1rem .3rem .35rem 1rem; }
.agent-list.open { display: flex; flex-direction: column; gap: .1rem; }

.agent-item {
    display: flex; align-items: center; gap: .45rem; padding: .3rem .4rem;
    background: transparent; border: none; color: var(--ink-muted); font-size: .7rem;
    cursor: pointer; border-radius: .35rem; text-align: left; width: 100%;
    transition: background .15s, color .15s;
}
.agent-item:hover { background: var(--bg-raise); color: var(--ink); }
.aitem-icon { color: var(--accent); width: .9rem; flex-shrink: 0; }
.aitem-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.aitem-prefix { color: var(--ink-dim); font-family: 'JetBrains Mono', monospace; font-size: .62rem; }

/* Left footer (auth) */
.left-footer { padding: .6rem .9rem; border-top: 1px solid var(--line); background: var(--bg-elev); }
.sign-in-btn, .signed-in-bar {
    width: 100%; padding: .4rem; background: transparent; border: 1px solid var(--line-br);
    border-radius: .45rem; color: var(--ink-muted); cursor: pointer; font-size: .72rem;
    display: flex; align-items: center; gap: .4rem; justify-content: center;
}
.sign-in-btn:hover { border-color: var(--accent); color: var(--accent); }
.user-mark { color: var(--accent); }
.user-email { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; color: var(--ink); }
.sign-out-btn { font-size: .62rem; padding: .15rem .4rem; background: transparent; border: 1px solid var(--line-br); border-radius: .3rem; color: var(--ink-dim); cursor: pointer; }
.sign-out-btn:hover { color: var(--red); border-color: var(--red); }

/* Sign-in overlay */
.signin-overlay { display: none; position: fixed; inset: 0; z-index: 500; background: rgba(0,0,0,.6); backdrop-filter: blur(4px); align-items: center; justify-content: center; }
.signin-overlay.visible { display: flex; }
.signin-box { background: var(--bg-elev); border: 1px solid var(--line); border-radius: .75rem; padding: 1.6rem; width: 360px; }
.signin-box h3 { color: var(--ink); font-size: 1.05rem; margin-bottom: .3rem; }
.signin-sub { color: var(--ink-dim); font-size: .72rem; margin-bottom: 1rem; }
.signin-box input { width: 100%; padding: .55rem .75rem; border: 1px solid var(--line); background: var(--bg); color: var(--ink); border-radius: .45rem; font-size: .85rem; margin-bottom: .8rem; }
.signin-box input:focus { outline: none; border-color: var(--accent); }
.signin-box button { width: 100%; padding: .55rem; background: var(--accent); color: var(--bg); border: none; border-radius: .45rem; font-weight: 600; cursor: pointer; }

/* ── Center pane ── */
.center-pane { display: flex; flex-direction: column; overflow: hidden; position: relative; background: var(--bg); }
.chat-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: .6rem 1.1rem; background: var(--bg-elev); border-bottom: 1px solid var(--line);
    min-height: 2.75rem; gap: .5rem; flex-shrink: 0;
}
.chat-header-left { display: flex; align-items: center; gap: .55rem; }
.chat-header-title { font-size: .9rem; font-weight: 600; color: var(--ink); }
.chat-header-dot { color: var(--ink-dim); }
.chat-header-agent { color: var(--accent); font-size: .78rem; font-weight: 500; }
.mobile-menu-btn { display: none; padding: .3rem .5rem; background: transparent; border: 1px solid var(--line); border-radius: .4rem; color: var(--ink); font-size: 1.1rem; cursor: pointer; }

.artifact-toggle-btn {
    padding: .3rem .7rem; background: transparent; border: 1px solid var(--line-br); border-radius: .45rem;
    color: var(--ink-muted); font-size: .72rem; cursor: pointer; transition: all .15s;
}
.artifact-toggle-btn:hover { border-color: var(--accent); color: var(--accent); }
.artifact-toggle-btn.active { background: var(--accent); color: var(--bg); border-color: var(--accent); }

/* Messages area */
.messages {
    flex: 1; overflow-y: auto; padding: 1.1rem 1.5rem; display: flex; flex-direction: column; gap: 1.05rem;
}
.msg { display: flex; flex-direction: column; max-width: 78%; }
.msg-user { align-self: flex-end; }
.msg-assistant { align-self: flex-start; }
.msg-agent { display: flex; align-items: center; gap: .35rem; font-size: .62rem; color: var(--ink-dim); margin-bottom: .3rem; padding-left: .1rem; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .12em; }
.msg-agent-icon { color: var(--accent); }
.msg-bubble {
    padding: .75rem 1rem; border-radius: .85rem;
    font-size: .88rem; line-height: 1.55; color: var(--ink); white-space: pre-wrap;
}
.msg-user .msg-bubble { background: var(--accent); color: var(--bg); border-bottom-right-radius: .25rem; }
.msg-assistant .msg-bubble { background: var(--bg-elev); border: 1px solid var(--line); border-bottom-left-radius: .25rem; }
.msg-tool .msg-bubble { background: var(--bg-raise); border: 1px dashed var(--line-br); font-family: 'JetBrains Mono', monospace; font-size: .72rem; color: var(--ink-muted); }

.msg-bubble pre { background: var(--bg); border: 1px solid var(--line); border-radius: .4rem; padding: .6rem; overflow-x: auto; font-size: .72rem; margin: .4rem 0; }
.msg-bubble ul { padding-left: 1.1rem; margin: .35rem 0; }
.msg-bubble li { margin-bottom: .25rem; }
.msg-bubble strong { color: var(--accent); }

/* Welcome hero */
.welcome-hero { position: absolute; top: 45%; left: 50%; transform: translate(-50%, -50%); width: min(720px, 85%); text-align: center; pointer-events: none; }
.welcome-hero .suggestions { pointer-events: auto; }
.center-pane:has(#messages:not(:empty)) #welcome-hero { display: none; }
.hero-mark { color: var(--accent); font-size: 2.3rem; }
.welcome-title { color: var(--ink); font-size: 2rem; font-weight: 500; letter-spacing: -.025em; margin-top: .2rem; }
.welcome-sub { color: var(--ink-muted); font-size: .9rem; margin-top: .5rem; }
.suggestions { display: flex; flex-wrap: wrap; gap: .55rem; justify-content: center; margin-top: 1.8rem; }
.suggestion-chip { display: flex; align-items: center; gap: .45rem; padding: .45rem .75rem; background: var(--bg-elev); border: 1px solid var(--line); border-radius: 2rem; color: var(--ink-muted); font-size: .76rem; font-family: 'JetBrains Mono', monospace; cursor: pointer; transition: all .15s; }
.suggestion-chip:hover { border-color: var(--accent); color: var(--accent); }
.sugg-icon { color: var(--accent); }

/* Chat input form */
.chat-form { display: flex; gap: .5rem; padding: .8rem 1.1rem; border-top: 1px solid var(--line); background: var(--bg-elev); }
.chat-textarea {
    flex: 1; padding: .7rem .9rem; background: var(--bg); border: 1px solid var(--line);
    border-radius: .6rem; color: var(--ink); font-size: .85rem; font-family: inherit;
    resize: none; line-height: 1.4; max-height: 12rem; outline: none;
}
.chat-textarea:focus { border-color: var(--accent); }
.chat-send {
    padding: .65rem 1.1rem; background: var(--accent); color: var(--bg); border: none;
    border-radius: .6rem; font-weight: 600; cursor: pointer;
}
.chat-send:hover { background: var(--ink); }
.chat-send:disabled { opacity: .5; cursor: wait; }

/* Streaming indicator */
.streaming::after { content: "▊"; color: var(--accent); animation: blink 1s steps(2) infinite; margin-left: .15rem; }
@keyframes blink { to { opacity: 0; } }

/* ── Right pane (artifact) ── */
.right-pane {
    position: fixed; top: 0; bottom: 0; right: -440px; width: 420px;
    background: var(--bg-elev); border-left: 1px solid var(--line);
    z-index: 150; display: flex; flex-direction: column;
    transition: right .3s ease;
}
.right-pane.open { right: 0; }
.right-header { display: flex; justify-content: space-between; align-items: center; padding: .75rem 1.05rem; border-bottom: 1px solid var(--line); background: var(--bg-elev); }
.right-header-left { display: flex; flex-direction: column; }
.right-title { color: var(--ink); font-size: .92rem; }
.right-subtitle { color: var(--ink-dim); font-size: .68rem; margin-top: .1rem; font-family: 'JetBrains Mono', monospace; }
.right-close { background: transparent; border: 1px solid var(--line); color: var(--ink-dim); border-radius: .4rem; padding: .15rem .5rem; cursor: pointer; }
.right-close:hover { color: var(--accent); border-color: var(--accent); }
.right-body { flex: 1; overflow-y: auto; padding: 1rem; }

.artifact-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; text-align: center; padding: 3rem 2rem; color: var(--ink-dim); }
.artifact-empty-icon { font-size: 2.2rem; color: var(--accent); opacity: .6; margin-bottom: .9rem; }
.artifact-empty-text { color: var(--ink-dim); font-size: .78rem; line-height: 1.5; }

.artifact-card { background: var(--bg); border: 1px solid var(--line); border-radius: .55rem; padding: .85rem .95rem; margin-bottom: .75rem; }
.artifact-card h4 { color: var(--ink); font-size: .78rem; margin-bottom: .3rem; }
.artifact-card .meta { color: var(--ink-dim); font-size: .68rem; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .1em; margin-bottom: .3rem; }
.artifact-card .body { color: var(--ink-muted); font-size: .78rem; line-height: 1.5; }

.artifact-table { width: 100%; border-collapse: collapse; font-size: .72rem; }
.artifact-table th, .artifact-table td { text-align: left; padding: .3rem .45rem; border-bottom: 1px solid var(--line); }
.artifact-table th { color: var(--ink-dim); font-weight: 500; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .08em; font-size: .62rem; }

/* Tool call log (inline with assistant message) */
.tool-log { font-family: 'JetBrains Mono', monospace; font-size: .68rem; color: var(--ink-dim); margin-top: .35rem; padding-left: .8rem; border-left: 2px solid var(--line-br); }
.tool-log .tool-step { margin-bottom: .2rem; }
.tool-log .tool-name { color: var(--accent); }

/* Left overlay for mobile */
.left-overlay { display: none; position: fixed; inset: 0; z-index: 199; background: rgba(0,0,0,.4); backdrop-filter: blur(2px); }
.left-overlay.visible { display: block; }

/* ── Responsive ── */
@media (max-width: 960px) {
    .app { padding-right: 0; grid-template-columns: 1fr; }
    .left-pane { position: fixed; left: -320px; top: 0; bottom: 0; width: 300px; transition: left .3s ease; }
    .left-pane.open { left: 0; }
    .mobile-menu-btn { display: inline-flex; align-items: center; justify-content: center; }
    .right-pane { width: 92vw; right: -95vw; }
}

/* ── Sample cards (Gemini-style) ───────────────────────────────── */
.sample-cards { padding: .4rem 1.1rem 1rem; background: var(--bg-elev); border-top: 1px solid var(--line); }
.sample-cards-label { display: inline-block; font-size: .62rem; font-weight: 600; text-transform: uppercase; letter-spacing: .14em; color: var(--ink-dim); margin-bottom: .5rem; padding-left: .15rem; }
.sample-cards-row { display: flex; flex-wrap: wrap; gap: .5rem; }
.sample-card {
    background: var(--bg);
    border: 1px solid var(--line);
    color: var(--ink-muted);
    padding: .5rem .8rem;
    border-radius: 10px;
    font-size: .72rem;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    max-width: 380px;
    text-align: left;
    line-height: 1.35;
    transition: all .15s;
}
.sample-card:hover { border-color: var(--accent); color: var(--accent); background: var(--bg-raise); }
.sample-card-text { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Thinking indicator ────────────────────────────────────────── */
.thinking-indicator {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .45rem .75rem; background: var(--bg-raise);
    border: 1px dashed var(--line-br); border-radius: 999px;
    font-size: .72rem; color: var(--ink-muted);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: .35rem; align-self: flex-start;
}
.thinking-indicator .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: pulse 1.1s ease-in-out infinite; }
.thinking-indicator code { background: var(--bg); padding: .05rem .35rem; border-radius: 4px; color: var(--accent); font-size: .7rem; }
.thinking-indicator .secs { color: var(--ink-dim); }
@keyframes pulse { 0%, 100% { opacity: .35; transform: scale(.85); } 50% { opacity: 1; transform: scale(1); } }

/* ── Memo preview / PDF iframe in right pane ──────────────────── */
.memo-preview-row {
    display: flex; flex-wrap: wrap; align-items: center; gap: .6rem;
    margin-top: .5rem; padding: .55rem .75rem;
    background: var(--accent-dim); border: 1px solid var(--accent);
    border-radius: .55rem; align-self: flex-start; max-width: 100%;
}
.memo-preview-btn {
    padding: .35rem .85rem; border-radius: .4rem; font-size: .75rem;
    background: var(--accent); color: var(--bg); border: none; cursor: pointer;
    font-weight: 600;
}
.memo-preview-btn:hover { background: var(--ink); }
.memo-preview-btn:disabled { opacity: .6; cursor: wait; }
.memo-preview-hint { color: var(--ink-muted); font-size: .7rem; line-height: 1.4; flex: 1 1 200px; }

.pdf-wrap { display: flex; flex-direction: column; height: 100%; min-height: 560px; }
.pdf-caption { font-size: .7rem; color: var(--ink-dim); padding: .2rem .25rem .55rem; font-family: 'JetBrains Mono', monospace; }
.pdf-caption i { font-style: italic; color: var(--accent); }
.pdf-iframe {
    flex: 1; width: 100%; min-height: 560px;
    border: 1px solid var(--line); border-radius: .5rem; background: #fff;
}

/* ── Follow-up ("Should we do that?") row ─────────────────────── */
.followup-row {
    display: flex; align-items: center; gap: .55rem;
    margin-top: .5rem; padding: .55rem .75rem;
    background: var(--bg-raise); border: 1px solid var(--line);
    border-radius: .6rem;
    font-size: .78rem; color: var(--ink);
    align-self: flex-start; max-width: 100%;
    flex-wrap: wrap;
}
.followup-row .followup-prompt { flex: 1 1 300px; color: var(--ink-muted); font-size: .75rem; line-height: 1.35; }
.followup-btn {
    padding: .35rem .75rem; border-radius: .4rem; font-size: .7rem;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer; border: 1px solid var(--line-br); background: var(--bg); color: var(--ink);
    transition: all .15s;
}
.followup-btn.followup-yes { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.followup-btn.followup-yes:hover { background: var(--ink); border-color: var(--ink); }
.followup-btn.followup-no:hover { color: var(--red); border-color: var(--red); }

/* ── Configuration section in left pane ─────────────────────────── */
.config-section { padding: .35rem .25rem .5rem; }
.cfg-row { display: flex; justify-content: space-between; align-items: baseline; padding: 0 .3rem .3rem; }
.cfg-label { font-size: .72rem; color: var(--ink); font-weight: 500; }
.cfg-help { font-size: .58rem; color: var(--ink-dim); font-family: 'JetBrains Mono', monospace; letter-spacing: .04em; }
.cfg-pills { display: flex; gap: .25rem; padding: 0 .15rem; }
.cfg-chip {
    flex: 1; padding: .3rem .1rem;
    display: flex; align-items: center; justify-content: center; gap: .25rem;
    background: var(--bg-raise); border: 1px solid var(--line);
    border-radius: .4rem; color: var(--ink-muted);
    font-size: .68rem; cursor: pointer; transition: all .15s;
    font-family: 'JetBrains Mono', monospace;
}
.cfg-chip:hover { border-color: var(--accent); color: var(--accent); }
.cfg-chip.active { background: var(--accent); color: var(--bg); border-color: var(--accent); font-weight: 600; }
.cfg-sym { font-size: .78rem; font-weight: 600; }
.cfg-code { font-size: .62rem; letter-spacing: .04em; }

.cfg-integrations-toggle {
    width: 100%; margin-top: .65rem; padding: .35rem .4rem;
    display: flex; align-items: center; gap: .4rem;
    background: transparent; border: none; cursor: pointer; color: var(--ink);
    font-size: .72rem; font-weight: 500; border-radius: .35rem;
    transition: background .15s;
}
.cfg-integrations-toggle:hover { background: var(--bg-raise); }
.cfg-arrow { color: var(--ink-dim); font-size: .62rem; transition: transform .2s; }
.cfg-integrations-toggle.open .cfg-arrow { transform: rotate(90deg); }
.cfg-count { margin-left: auto; color: var(--ink-dim); font-size: .62rem; font-family: 'JetBrains Mono', monospace; }

.integration-list { display: none; padding: .15rem .2rem .35rem; }
.integration-list.open { display: block; }
.integration-row {
    display: flex; align-items: center; gap: .4rem;
    padding: .3rem .4rem; border-radius: .3rem; font-size: .68rem;
    color: var(--ink-muted);
}
.integration-row:hover { background: var(--bg-raise); }
.integration-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--line-br); flex-shrink: 0; }
.integration-dot.ok { background: var(--accent); }
.integration-name { flex: 1; color: var(--ink); font-weight: 500; }
.integration-note { color: var(--ink-dim); font-size: .58rem; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .06em; }
.integration-status { color: var(--ink-dim); font-size: .58rem; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .08em; margin-left: .3rem; }
.integration-status.ok { color: var(--accent); }

/* ── Left pane bottom-nav (Pipeline / Instructions / Analytics) ── */
.bottom-nav { padding: .25rem; margin-top: .4rem; display: flex; flex-direction: column; gap: .15rem; }
.bottom-nav-link {
    display: flex; align-items: center; gap: .55rem;
    padding: .4rem .5rem; font-size: .76rem; color: var(--ink-muted);
    background: transparent; border-radius: .4rem; text-decoration: none;
    transition: background .15s, color .15s;
}
.bottom-nav-link:hover { background: var(--bg-raise); color: var(--ink); }
.bottom-nav-link.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }
.bottom-nav-icon { color: var(--accent); width: 1rem; text-align: center; flex-shrink: 0; }
.bottom-nav-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Scrollbar */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-br); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }