/* Brain Studio (P1) — the programmable agent brain, edited as an ordered stack of
 * configuration cards (the composer). Mounts inside the Agent Studio shell's Brain
 * tab. Uses platform design tokens (public/tokens.css). Scoped under .brainstudio /
 * .bcard / .bgroup so it never touches the shell's own (.studio-*) styles. */

.brainstudio {
	--node-persona: #8b8bff;
	--node-model: #4fd1c5;
	--node-memory: #f6ad55;
	--node-skill: #b794f4;
	--node-market: #68d391;
	--node-output: #fc8181;
	height: 100%;
	display: flex;
	flex-direction: column;
	min-height: 0;
}

/* The shell pads tab panels and animates them; the Brain wants the full canvas. */
.studio-tabpanel[data-studio-mount="brain"] { padding: 0; height: 100%; min-height: 480px; display: flex; }
.studio-tabpanel[data-studio-mount="brain"] > .brainstudio { flex: 1; }

/* Shared button (brain-local; double-underscore, won't collide with shell .studio-btn) */
.studio__btn {
	display: inline-flex; align-items: center; gap: var(--space-2xs);
	padding: var(--space-2xs) var(--space-md); border-radius: var(--radius-md);
	border: 1px solid var(--surface-3); background: var(--surface-1); color: var(--ink);
	font-size: var(--text-sm); font-weight: var(--weight-medium); cursor: pointer; text-decoration: none;
	transition: background var(--duration-fast), border-color var(--duration-fast), transform var(--duration-instant); font-family: inherit;
}
.studio__btn:hover { background: var(--surface-3); }
.studio__btn:active { transform: translateY(1px); }
.studio__btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.studio__btn-primary { background: var(--accent); color: var(--bg-0); border-color: var(--accent); }
.studio__btn-primary:hover { filter: brightness(1.08); }
.studio__btn:disabled { opacity: .5; cursor: not-allowed; }
.studio__btn.is-saved { border-color: var(--node-market); color: var(--node-market); }

.brainstudio__editor { display: flex; flex-direction: column; height: 100%; min-height: 0; }

/* ── Onboarding ─────────────────────────────────────────────────────────── */
.brainstudio__onboard { height: 100%; display: grid; place-items: center; padding: var(--space-lg); }
.brainstudio__onboard-inner { max-width: 720px; text-align: center; }
.brainstudio__onboard h1 { font-size: var(--text-2xl); margin: 0 0 var(--space-xs); color: var(--ink-bright); }
.brainstudio__onboard p { color: var(--ink-dim); margin: 0 0 var(--space-lg); }
.brainstudio__templates { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-sm); margin-bottom: var(--space-lg); }
.brainstudio__tpl {
	text-align: left; padding: var(--space-md); border-radius: var(--radius-lg); cursor: pointer;
	border: 1px solid var(--surface-3); background: var(--surface-1); color: var(--ink);
	display: flex; flex-direction: column; gap: var(--space-2xs); transition: transform var(--duration-fast), border-color var(--duration-fast), background var(--duration-fast);
}
.brainstudio__tpl:hover { transform: translateY(-2px); background: var(--surface-2); }
.brainstudio__tpl::before { content: ''; width: 26px; height: 4px; border-radius: 2px; background: var(--accent); }
.brainstudio__tpl--persona::before { background: var(--node-persona); }
.brainstudio__tpl--model::before { background: var(--node-model); }
.brainstudio__tpl--memory::before { background: var(--node-memory); }
.brainstudio__tpl--market::before { background: var(--node-market); }
.brainstudio__tpl-name { font-weight: var(--weight-semibold); color: var(--ink-bright); }
.brainstudio__tpl-tag { font-size: var(--text-sm); color: var(--ink-dim); }

/* ── Toolbar ────────────────────────────────────────────────────────────── */
.brainstudio__toolbar { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-md); flex-wrap: wrap; border-bottom: 1px solid var(--surface-2); }
.brainstudio__toolbar-title { display: flex; flex-direction: column; gap: 1px; }
.brainstudio__toolbar-name { font-size: var(--text-md); font-weight: var(--weight-semibold); color: var(--ink-bright); }
.brainstudio__toolbar-sub { font-size: var(--text-sm); color: var(--ink-dim); }
.brainstudio__tools { margin-left: auto; display: flex; gap: var(--space-2xs); }

/* ── Main split: composer + side ────────────────────────────────────────── */
.brainstudio__main { flex: 1; display: grid; grid-template-columns: 1fr minmax(280px, 360px); gap: var(--space-sm); min-height: 0; padding: var(--space-sm); }
.brainstudio__form { overflow: auto; min-height: 0; padding-right: var(--space-2xs); }
.brainstudio__side { display: flex; flex-direction: column; gap: var(--space-sm); min-height: 0; }

/* ── Composer: the brain as an ordered stack of configuration cards ──────── */
.brainstudio__composer { display: flex; flex-direction: column; gap: var(--space-sm); }

.bcard {
	box-sizing: border-box; border-radius: var(--radius-lg);
	border: 1px solid var(--surface-2); background: var(--surface-1);
	transition: box-shadow var(--duration-fast), border-color var(--duration-fast);
}
.bcard.is-active { border-color: var(--accent); }
.bcard.is-pulse { animation: bpulse .7s ease-out; }
@keyframes bpulse { 0% { box-shadow: 0 0 0 0 var(--accent); } 100% { box-shadow: 0 0 0 12px transparent; } }
.bcard.is-busy .bcard__dot { animation: bbusy .8s ease-in-out infinite; }
@keyframes bbusy { 0%, 100% { opacity: .3; } 50% { opacity: 1; } }

.bcard__head { display: flex; align-items: center; gap: var(--space-2xs); padding: var(--space-sm) var(--space-md) var(--space-2xs); }
.bcard__dot { width: 10px; height: 10px; border-radius: 3px; background: var(--accent); flex: none; }
.bcard__dot--persona { background: var(--node-persona); }
.bcard__dot--model { background: var(--node-model); }
.bcard__dot--memory { background: var(--node-memory); }
.bcard__dot--skill { background: var(--node-skill); }
.bcard__dot--market { background: var(--node-market); }
.bcard__dot--output { background: var(--node-output); }
.bcard__title { margin: 0; font-size: var(--text-md); font-weight: var(--weight-semibold); color: var(--ink-bright); }
.bcard__stat { font-size: var(--text-2xs); color: var(--node-model); margin-left: var(--space-2xs); }
.bcard__remove { margin-left: auto; border: 1px solid transparent; background: transparent; color: var(--ink-faint); cursor: pointer; font-size: var(--text-sm); padding: 2px 8px; border-radius: var(--radius-md); transition: color var(--duration-fast), background var(--duration-fast); font-family: inherit; }
.bcard__remove:hover { color: var(--node-output); background: var(--surface-2); }
.bcard__hint { margin: 0 var(--space-md) var(--space-2xs); font-size: var(--text-sm); color: var(--ink-dim); }
.bcard--add { border-style: dashed; }
.bcard__addbtn { margin: 0 var(--space-md) var(--space-md); }
.bcard__fields { display: flex; flex-direction: column; gap: var(--space-sm); padding: var(--space-2xs) var(--space-md) var(--space-md); }
.bcard__field { display: flex; flex-direction: column; gap: var(--space-3xs); }
.bcard__field:has(.brainstudio__toggle) { flex-direction: row; align-items: center; justify-content: space-between; }
.bcard__label { font-size: var(--text-sm); color: var(--ink-dim); }
.bcard__input { width: 100%; box-sizing: border-box; padding: var(--space-2xs) var(--space-sm); background: var(--bg-1); color: var(--ink); border: 1px solid var(--surface-3); border-radius: var(--radius-md); font-size: var(--text-sm); font-family: inherit; }
.bcard__input:focus { outline: none; border-color: var(--accent); }
textarea.bcard__input { resize: vertical; }

/* Repeatable groups: Skills, Market signals */
.bgroup { display: flex; flex-direction: column; gap: var(--space-sm); border: 1px solid var(--surface-2); border-radius: var(--radius-lg); padding: var(--space-sm) var(--space-md) var(--space-md); background: var(--surface-1); }
.bgroup__head { display: flex; align-items: center; gap: var(--space-2xs); }
.bgroup__title { margin: 0; font-size: var(--text-md); font-weight: var(--weight-semibold); color: var(--ink-bright); }
.bgroup__add { margin-left: auto; padding: var(--space-3xs) var(--space-sm); }
.bgroup__empty { margin: 0; font-size: var(--text-sm); color: var(--ink-dim); }
.bgroup .bcard { background: var(--bg-1); }

/* ── Toggle (shared by composer cards) ──────────────────────────────────── */
.brainstudio__toggle { position: relative; display: inline-block; width: 38px; height: 22px; flex: none; }
.brainstudio__toggle input { opacity: 0; width: 0; height: 0; }
.brainstudio__toggle span { position: absolute; inset: 0; background: var(--surface-3); border-radius: var(--radius-pill); transition: background var(--duration-fast); cursor: pointer; }
.brainstudio__toggle span::before { content: ''; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; background: var(--ink); border-radius: 50%; transition: transform var(--duration-fast); }
.brainstudio__toggle input:checked + span { background: var(--accent); }
.brainstudio__toggle input:checked + span::before { transform: translateX(16px); background: var(--bg-0); }
.brainstudio__toggle input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Test chat ──────────────────────────────────────────────────────────── */
.brainstudio__test { flex: 1; display: flex; flex-direction: column; min-height: 0; background: var(--surface-1); border: 1px solid var(--surface-2); border-radius: var(--radius-lg); overflow: hidden; }
.brainstudio__test-head { padding: var(--space-2xs) var(--space-md); border-bottom: 1px solid var(--surface-2); font-size: var(--text-sm); font-weight: var(--weight-semibold); color: var(--ink); }
.brainstudio__test-model { color: var(--ink-faint); font-weight: var(--weight-regular); }
.brainstudio__transcript { flex: 1; overflow: auto; padding: var(--space-sm); display: flex; flex-direction: column; gap: var(--space-sm); }
.brainstudio__msg { max-width: 90%; padding: var(--space-2xs) var(--space-sm); border-radius: var(--radius-md); font-size: var(--text-sm); white-space: pre-wrap; word-break: break-word; }
.brainstudio__msg--user { align-self: flex-end; background: var(--accent); color: var(--bg-0); }
.brainstudio__msg--agent { align-self: flex-start; background: var(--surface-3); color: var(--ink); }
.brainstudio__msg.is-error { background: rgba(252, 129, 129, 0.15); color: var(--node-output); }
.brainstudio__msg-stat { margin-top: 4px; font-size: var(--text-2xs); color: var(--ink-faint); }
.brainstudio__msg--user .brainstudio__msg-stat { display: none; }
.brainstudio__compose { display: flex; gap: var(--space-2xs); padding: var(--space-2xs); border-top: 1px solid var(--surface-2); }
.brainstudio__compose textarea { flex: 1; resize: none; padding: var(--space-2xs) var(--space-sm); background: var(--bg-1); color: var(--ink); border: 1px solid var(--surface-3); border-radius: var(--radius-md); font-family: inherit; font-size: var(--text-sm); }
.brainstudio__compose textarea:focus { outline: none; border-color: var(--accent); }

/* ── Modal (templates + behavior diff) ──────────────────────────────────── */
/* Resting state sets NO `display`, so the UA `[hidden]{display:none}` rule alone
 * keeps the overlay collapsed — the component is correct even without the global
 * guard in tokens.css. Visibility lives on `:not([hidden])`, applied only when
 * _showTemplateModal()/_showBehavior() drop the attribute. */
.brainstudio__modal { position: fixed; inset: 0; z-index: 1000; }
.brainstudio__modal:not([hidden]) { display: grid; place-items: center; background: rgba(0, 0, 0, 0.55); padding: var(--space-md); }
.brainstudio__modal-card { width: min(720px, 100%); max-height: 86vh; overflow: auto; background: var(--bg-1); border: 1px solid var(--surface-3); border-radius: var(--radius-lg); padding: var(--space-lg); }
.brainstudio__modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-2xs); }
.brainstudio__modal-head h2 { margin: 0; font-size: var(--text-lg); color: var(--ink-bright); }
.brainstudio__modal-x { border: 0; background: transparent; color: var(--ink-dim); font-size: var(--text-xl); cursor: pointer; line-height: 1; }
.brainstudio__modal-sub { margin: 0 0 var(--space-md); color: var(--ink-dim); font-size: var(--text-sm); }
.brainstudio__behavior-meta { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-bottom: var(--space-md); font-size: var(--text-sm); color: var(--ink-dim); }
.brainstudio__behavior-meta b { color: var(--ink); font-weight: var(--weight-medium); }
.brainstudio__diff { white-space: pre-wrap; word-break: break-word; background: var(--bg-0); border: 1px solid var(--surface-2); border-radius: var(--radius-md); padding: var(--space-md); font-size: var(--text-sm); line-height: var(--leading-normal); max-height: 50vh; overflow: auto; color: var(--ink); }
.diff-add { color: var(--node-market); }
.diff-del { color: var(--node-output); text-decoration: line-through; opacity: .8; }
.diff-muted { color: var(--ink-faint); }

/* ── Footer: save state + continue ─────────────────────────────────────── */
.brainstudio__footer {
	display: flex; align-items: center; justify-content: flex-end; gap: var(--space-md);
	padding: var(--space-xs) var(--space-sm);
	border-top: 1px solid var(--surface-2);
	background: var(--bg-1);
}
.brainstudio__footer-save {
	margin-right: auto;
	font-size: var(--text-sm); color: var(--ink-faint);
	transition: color var(--duration-base);
}
.brainstudio__footer-exit { padding: 8px 16px; }
.brainstudio__footer-save[data-state="saving"] { color: var(--warn, #fbbf24); }
.brainstudio__footer-save[data-state="saved"] { color: var(--node-market); }
.brainstudio__footer-save[data-state="error"] { color: var(--node-output); }
.brainstudio__footer-continue { padding: 8px 20px; }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
	.brainstudio__main { grid-template-columns: 1fr; grid-template-rows: auto minmax(260px, 1fr); }
	.brainstudio__form { max-height: 50vh; }
	.brainstudio__test { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
	.bcard.is-pulse, .bcard.is-busy .bcard__dot { animation: none; }
	.bcard.is-active { box-shadow: 0 0 0 1px var(--accent); }
}

/* ── Interactive states (QB-07) ────────────────────────────────────────────
   The modal close and the toggle track: both promised they were clickable and
   neither reacted. The track already had its transition, it just had no hover
   to run it. */
.brainstudio__modal-x {
	transition:
		color var(--duration-fast) var(--ease-standard),
		transform var(--duration-fast) var(--ease-standard);
}

.brainstudio__modal-x:hover {
	color: var(--ink-bright);
	transform: rotate(90deg);
}

.brainstudio__toggle:hover span {
	background: var(--stroke-strong);
}