/* Brain Studio (P1) — the visual, programmable agent brain.
 * Mounts inside the Agent Studio shell's Brain tab. Uses platform design tokens
 * (public/tokens.css). Scoped under .brainstudio / .bgraph 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 .15s, border-color .15s, transform .1s; 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 .12s, border-color .15s, background .15s;
}
.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); flex-wrap: wrap; border-bottom: 1px solid var(--surface-2); }
.brainstudio__palette { display: flex; gap: var(--space-2xs); flex-wrap: wrap; }
.brainstudio__tools { margin-left: auto; display: flex; gap: var(--space-2xs); }
.brainstudio__chip {
	padding: var(--space-3xs) var(--space-sm); border-radius: var(--radius-pill); cursor: pointer;
	border: 1px solid var(--surface-3); background: var(--surface-1); color: var(--ink-dim);
	font-size: var(--text-sm); font-weight: var(--weight-medium); transition: color .15s, border-color .15s, background .15s; font-family: inherit;
}
.brainstudio__chip:hover { color: var(--ink); background: var(--surface-2); }
.brainstudio__chip--persona:hover { border-color: var(--node-persona); }
.brainstudio__chip--model:hover { border-color: var(--node-model); }
.brainstudio__chip--memory:hover { border-color: var(--node-memory); }
.brainstudio__chip--skill:hover { border-color: var(--node-skill); }
.brainstudio__chip--market:hover { border-color: var(--node-market); }
.brainstudio__chip--output:hover { border-color: var(--node-output); }

/* ── Main split: canvas + 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__canvas {
	position: relative; overflow: hidden; border-radius: var(--radius-lg);
	border: 1px solid var(--surface-2); background-color: var(--bg-1);
	background-image: radial-gradient(var(--surface-3) 1px, transparent 1px);
	background-size: 22px 22px; touch-action: none; cursor: grab;
}
.brainstudio__canvas.is-panning { cursor: grabbing; }
.brainstudio__side { display: flex; flex-direction: column; gap: var(--space-sm); min-height: 0; }

/* ── Graph ──────────────────────────────────────────────────────────────── */
.bgraph { position: absolute; inset: 0; overflow: hidden; }
.bgraph__world { position: absolute; inset: 0; transform-origin: 0 0; }
.bgraph__edges { position: absolute; left: 0; top: 0; width: 8000px; height: 8000px; overflow: visible; pointer-events: none; }
.bgraph__nodes { position: absolute; inset: 0; }
.bgraph__hint { position: absolute; left: 50%; bottom: 10px; transform: translateX(-50%); font-size: var(--text-sm); color: var(--ink-dim); background: var(--surface-1); padding: 2px 10px; border-radius: var(--radius-pill); pointer-events: none; }

.bedge { fill: none; stroke: var(--surface-3); stroke-width: 2; transition: stroke .2s; }
.bedge-hit { fill: none; stroke: transparent; stroke-width: 14; pointer-events: stroke; cursor: pointer; }
.bedge.is-active { stroke: var(--accent); stroke-width: 2.5; filter: drop-shadow(0 0 4px var(--accent)); }
.bedge--ghost { stroke: var(--accent); stroke-dasharray: 5 4; opacity: .7; }
.bedge.is-flow { stroke-dasharray: 7 6; animation: bflow .6s linear infinite; }
@keyframes bflow { to { stroke-dashoffset: -26; } }

.bnode {
	position: absolute; left: 0; top: 0; box-sizing: border-box;
	border-radius: var(--radius-md); border: 1px solid var(--surface-3);
	background: var(--surface-glass); backdrop-filter: blur(8px);
	box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35); user-select: none;
	transition: box-shadow .15s, border-color .15s;
}
.bnode.is-selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 8px 28px rgba(0, 0, 0, 0.45); }
.bnode.is-active { border-color: var(--accent); }
.bnode.is-pulse { animation: bpulse .7s ease-out; }
@keyframes bpulse { 0% { box-shadow: 0 0 0 0 var(--accent); } 100% { box-shadow: 0 0 0 14px transparent; } }
.bnode.is-busy .bnode__head::after { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--node-memory); margin-left: auto; animation: bbusy .8s ease-in-out infinite; }
@keyframes bbusy { 0%, 100% { opacity: .3; } 50% { opacity: 1; } }

.bnode__head { display: flex; align-items: center; gap: var(--space-2xs); height: 34px; padding: 0 var(--space-sm); border-bottom: 1px solid var(--surface-2); cursor: grab; border-radius: var(--radius-md) var(--radius-md) 0 0; }
.bnode__head::before { content: ''; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); }
.bnode--persona .bnode__head::before { background: var(--node-persona); }
.bnode--model .bnode__head::before { background: var(--node-model); }
.bnode--memory .bnode__head::before { background: var(--node-memory); }
.bnode--skill .bnode__head::before { background: var(--node-skill); }
.bnode--market .bnode__head::before { background: var(--node-market); }
.bnode--output .bnode__head::before { background: var(--node-output); }
.bnode__title { font-size: var(--text-sm); font-weight: var(--weight-semibold); color: var(--ink); }
.bnode__del { margin-left: auto; border: 0; background: transparent; color: var(--ink-faint); cursor: pointer; font-size: var(--text-base); line-height: 1; padding: 2px 4px; border-radius: 4px; }
.bnode__del:hover { color: var(--node-output); background: var(--surface-2); }
.bnode__summary { padding: var(--space-2xs) var(--space-sm); font-size: var(--text-sm); color: var(--ink-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bnode__ports { display: flex; justify-content: space-between; padding-bottom: var(--space-2xs); }
.bnode__col { display: flex; flex-direction: column; gap: 6px; }
.bport { display: flex; align-items: center; gap: 5px; height: 20px; font-size: var(--text-2xs); color: var(--ink-faint); cursor: crosshair; padding: 0 var(--space-2xs); }
.bport--out { flex-direction: row-reverse; }
.bport__dot { width: 11px; height: 11px; border-radius: 50%; background: var(--bg-1); border: 2px solid var(--ink-dim); transition: transform .1s, border-color .15s; }
.bport:hover .bport__dot { transform: scale(1.25); }
.bport--signal .bport__dot { border-color: var(--node-persona); }
.bport--context .bport__dot { border-color: var(--node-memory); }
.bport--tool .bport__dot { border-color: var(--node-skill); }
.bnode__stat { padding: 2px var(--space-sm) var(--space-2xs); font-size: var(--text-2xs); color: var(--node-model); }

/* ── Inspector ──────────────────────────────────────────────────────────── */
.brainstudio__inspector { background: var(--surface-1); border: 1px solid var(--surface-2); border-radius: var(--radius-lg); padding: var(--space-md); overflow: auto; max-height: 48%; }
.brainstudio__inspector-empty h3, .brainstudio__insp-head h3 { margin: 0 0 var(--space-2xs); font-size: var(--text-md); color: var(--ink); }
.brainstudio__inspector-empty p { margin: 0; color: var(--ink-dim); font-size: var(--text-sm); }
.brainstudio__insp-head { display: flex; align-items: center; gap: var(--space-2xs); margin-bottom: var(--space-sm); }
.brainstudio__insp-dot { width: 10px; height: 10px; border-radius: 3px; background: var(--accent); }
.brainstudio__insp-dot--persona { background: var(--node-persona); }
.brainstudio__insp-dot--model { background: var(--node-model); }
.brainstudio__insp-dot--memory { background: var(--node-memory); }
.brainstudio__insp-dot--skill { background: var(--node-skill); }
.brainstudio__insp-dot--market { background: var(--node-market); }
.brainstudio__insp-dot--output { background: var(--node-output); }
.brainstudio__fields { display: flex; flex-direction: column; gap: var(--space-sm); }
.brainstudio__field { display: flex; flex-direction: column; gap: var(--space-3xs); }
.brainstudio__field-label { font-size: var(--text-sm); color: var(--ink-dim); }
.brainstudio__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; }
.brainstudio__input:focus { outline: none; border-color: var(--accent); }
textarea.brainstudio__input { resize: vertical; }
.brainstudio__toggle { position: relative; display: inline-block; width: 38px; height: 22px; }
.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 .15s; 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 .15s; }
.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 .2s;
}
.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: minmax(260px, 1fr) auto; }
	.brainstudio__side { flex-direction: row; }
	.brainstudio__inspector { max-height: none; flex: 1; }
	.brainstudio__test { flex: 1; }
}
@media (max-width: 720px) {
	.brainstudio__side { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
	.bedge.is-flow { animation: none; }
	.bnode.is-pulse, .bnode.is-busy .bnode__head::after { animation: none; }
}