/* Learny Brain — surfaces layered on top of the shared Learny design system.
   Palette + fonts come from style.css (:root tokens, Outfit/Inter). */

.brain-body {
  font-family: var(--font-body, 'Inter', sans-serif);
  color: var(--text, #0f172a);
  background: var(--bg, #f8fafc);
  margin: 0;
  min-height: 100vh;
}

/* ---------- Marketing header / footer ---------- */
.brain-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(2, 48, 71, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(140, 202, 230, 0.18);
}
.brain-header-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brain-brand {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading, 'Outfit', sans-serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.3px;
  color: #fff;
  text-decoration: none;
}
/* The literal space in the markup is the only separator; no flex gap (that caused the double space). */
.brain-brand .mark { color: var(--color-accent, #FFB703); }
.brain-brand img { height: 28px; width: auto; border-radius: 6px; margin-right: 10px; }
.brain-nav { display: flex; align-items: center; gap: 10px; }
.brain-nav a { color: #cfe8f3; text-decoration: none; font-size: 14px; padding: 8px 12px; border-radius: 8px; }
.brain-nav a:hover { color: #fff; }

/* ---------- Marketing hero ---------- */
.brain-hero {
  background:
    radial-gradient(900px 400px at 80% -10%, rgba(255, 183, 3, 0.18), transparent 60%),
    radial-gradient(700px 360px at 0% 20%, rgba(33, 158, 188, 0.22), transparent 55%),
    linear-gradient(135deg, #023047, #03415e);
  color: #f1f5f9;
  border-bottom: 3px solid var(--color-accent, #FFB703);
  padding: 120px 20px 90px;
}
.brain-hero-inner { max-width: 880px; margin: 0 auto; text-align: center; }
.brain-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent, #FFB703);
}
.brain-hero h1 {
  font-family: var(--font-heading, 'Outfit', sans-serif);
  font-size: clamp(34px, 6vw, 60px);
  line-height: 1.05;
  margin: 14px 0 18px;
  letter-spacing: -0.02em;
}
.brain-hero p.lead { font-size: clamp(17px, 2.4vw, 21px); color: #cfe8f3; max-width: 640px; margin: 0 auto 30px; }
.brain-cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Feature grid ---------- */
.brain-section { max-width: 1140px; margin: 0 auto; padding: 72px 20px; }
.brain-section h2 {
  font-family: var(--font-heading, 'Outfit', sans-serif);
  font-size: clamp(26px, 4vw, 36px);
  text-align: center;
  margin: 0 0 8px;
}
.brain-section .section-sub { text-align: center; color: var(--text-muted, #475569); max-width: 620px; margin: 0 auto 44px; }
.brain-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.brain-feature-card {
  background: #fff;
  border: 1px solid var(--border, #e2e8f0);
  border-left: 3px solid var(--color-accent, #FFB703);
  border-radius: 12px;
  padding: 26px;
}
.brain-feature-card h3 { font-family: var(--font-heading, 'Outfit', sans-serif); font-size: 19px; margin: 0 0 8px; }
.brain-feature-card p { color: var(--text-muted, #475569); margin: 0; line-height: 1.6; }
@media (max-width: 768px) { .brain-feature-grid { grid-template-columns: 1fr; } }

/* ---------- Auth / signup cards ---------- */
.brain-auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background:
    radial-gradient(700px 360px at 50% -10%, rgba(33, 158, 188, 0.12), transparent 60%),
    var(--bg, #f8fafc);
}
.brain-auth-card {
  width: 100%;
  max-width: 460px;
  background: #fff;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 18px;
  padding: 36px;
  box-shadow: var(--shadow-soft, 0 18px 42px rgba(2, 48, 71, 0.12));
}
.brain-auth-card .brain-brand { color: var(--color-dark, #023047); margin-bottom: 22px; }
.brain-auth-card h1 { font-family: var(--font-heading, 'Outfit', sans-serif); font-size: 26px; margin: 0 0 6px; }
.brain-auth-card .sub { color: var(--text-muted, #475569); margin: 0 0 24px; }
.brain-field { margin-bottom: 18px; }
.brain-field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.brain-field input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
}
.brain-field input:focus { outline: 2px solid var(--color-primary, #219EBC); outline-offset: 1px; border-color: var(--color-primary, #219EBC); }
.brain-subdomain-row { display: flex; align-items: stretch; }
.brain-subdomain-row input { border-top-right-radius: 0; border-bottom-right-radius: 0; }
.brain-subdomain-suffix {
  display: flex; align-items: center; padding: 0 14px;
  background: var(--bg, #f8fafc); border: 1px solid var(--border, #e2e8f0); border-left: 0;
  border-top-right-radius: 8px; border-bottom-right-radius: 8px; color: var(--text-muted, #475569); font-size: 14px;
}
.brain-otp-input { letter-spacing: 0.5em; text-align: center; font-size: 24px !important; font-weight: 700; }
.brain-form-msg { font-size: 13px; margin: 8px 0 0; }
.brain-form-msg.error { color: var(--danger, #ef4444); }
.brain-form-msg.success { color: var(--success, #10b981); }
.brain-auth-foot { margin-top: 20px; font-size: 14px; color: var(--text-muted, #475569); text-align: center; }
.brain-steps { display: flex; gap: 6px; margin-bottom: 22px; }
.brain-steps .dot { height: 4px; flex: 1; border-radius: 999px; background: var(--border, #e2e8f0); }
.brain-steps .dot.active { background: var(--color-accent, #FFB703); }

/* ---------- Error page ---------- */
.brain-error { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.brain-error-card { text-align: center; max-width: 460px; }
.brain-error-code { font-family: var(--font-heading, 'Outfit', sans-serif); font-size: 64px; font-weight: 700; color: var(--color-accent, #FFB703); margin: 0; }
.brain-error-card h1 { font-family: var(--font-heading, 'Outfit', sans-serif); margin: 4px 0 10px; }
.brain-error-msg { color: var(--text-muted, #475569); margin: 0 0 24px; }

/* ---------- Workspace shell ---------- */
.brain-shell { display: grid; grid-template-columns: 264px 1fr; min-height: 100vh; }
.brain-sidebar {
  background: linear-gradient(180deg, #023047, #03415e);
  color: #e8f3f9;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px solid rgba(140, 202, 230, 0.16);
  /* Pin to the viewport so the Workspace section + email stay in the corner
     no matter how long the page content is (sticky within the grid cell). */
  position: sticky;
  top: 0;
  align-self: start;       /* don't stretch to the (long) grid row height */
  height: 100vh;
  box-sizing: border-box;
  overflow-y: auto;        /* scroll internally if the sidebar itself overflows */
}
.brain-sidebar .brain-brand { color: #fff; }
.brain-sidebar-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 14px; }
.brain-sidebar-toggle { background: none; border: 0; color: #cfe8f3; cursor: pointer; padding: 4px 6px; border-radius: 6px; flex-shrink: 0; font-size: 14px; line-height: 1; }
.brain-sidebar-toggle:hover { background: rgba(140, 202, 230, 0.14); color: #fff; }
.brain-sidebar-expand { display: none; position: fixed; top: 14px; left: 12px; z-index: 80; background: #023047; color: #fff; border: 1px solid rgba(140, 202, 230, 0.25); border-radius: 8px; padding: 8px 11px; cursor: pointer; font-size: 15px; line-height: 1; }
.brain-sidebar-expand:hover { background: #03415e; }
/* Collapsed state: hide the sidebar, let main fill, show the floating expand button. */
.brain-shell.sidebar-collapsed { grid-template-columns: 1fr; }
.brain-shell.sidebar-collapsed .brain-sidebar { display: none; }
.brain-shell.sidebar-collapsed .brain-sidebar-expand { display: inline-flex; align-items: center; }
.brain-shell.sidebar-collapsed .brain-topbar { padding-left: 64px; }
.brain-sidebar-section { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: #8fb8cb; margin: 14px 8px 6px; }
.brain-nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 9px; color: #cfe8f3; text-decoration: none; font-size: 14px;
}
.brain-nav-link:hover { background: rgba(140, 202, 230, 0.12); color: #fff; }
.brain-nav-link.active { background: var(--color-accent, #FFB703); color: #023047; font-weight: 600; }
.brain-sidebar .spacer { flex: 1; }
.brain-brain-switch { width: 100%; padding: 10px 12px; border-radius: 9px; border: 1px solid rgba(140,202,230,0.25); background: rgba(255,255,255,0.06); color: #fff; font-size: 14px; font-family: inherit; }
.brain-main { display: flex; flex-direction: column; min-height: 100vh; background: var(--bg, #f8fafc); }
.brain-topbar { display: flex; align-items: center; justify-content: space-between; padding: 16px 28px; border-bottom: 1px solid var(--border, #e2e8f0); background: #fff; }
.brain-topbar h2 { font-family: var(--font-heading, 'Outfit', sans-serif); font-size: 18px; margin: 0; }
.brain-content { padding: 28px; flex: 1; }
@media (max-width: 860px) { .brain-shell { grid-template-columns: 1fr; } .brain-sidebar { display: none; } }

/* ---------- Chat ---------- */
.brain-chat { display: flex; flex-direction: column; height: calc(100vh - 130px); max-width: 860px; margin: 0 auto; width: 100%; }
.brain-messages { flex: 1; overflow-y: auto; padding: 10px 4px 20px; display: flex; flex-direction: column; gap: 16px; }
.brain-msg { display: flex; gap: 12px; }
.brain-msg .avatar { width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; overflow: hidden; }
.brain-msg.user .avatar { background: var(--color-primary, #219EBC); color: #fff; }
.brain-msg.assistant .avatar { background: var(--color-accent, #FFB703); color: #023047; }
.brain-msg .avatar.avatar-img { background: transparent; } /* let a transparent PNG show without the accent chip */
.avatar img.brain-avatar-img { width: 100%; height: 100%; object-fit: contain; display: block; }
/* Message body column: caps width and aligns content per side. */
.brain-msg > div:not(.avatar) { display: flex; flex-direction: column; min-width: 0; max-width: 80%; }
.brain-msg.assistant > div:not(.avatar) { align-items: flex-start; }
/* User messages alternate to the right, like a typical chat thread. */
.brain-msg.user { flex-direction: row-reverse; }
.brain-msg.user > div:not(.avatar) { align-items: flex-end; }
.brain-msg .bubble { background: #fff; border: 1px solid var(--border, #e2e8f0); border-radius: 12px; padding: 12px 16px; line-height: 1.6; white-space: pre-wrap; max-width: 100%; word-wrap: break-word; overflow-wrap: anywhere; }
.brain-msg.assistant .bubble { border-bottom-left-radius: 4px; white-space: normal; }
.brain-msg.user .bubble { background: #eef6fb; border-color: #d6e8f3; border-bottom-right-radius: 4px; }

/* Markdown inside assistant bubbles */
.brain-msg .bubble > :first-child { margin-top: 0; }
.brain-msg .bubble > :last-child { margin-bottom: 0; }
.brain-msg .bubble p { margin: 0 0 10px; }
.brain-msg .bubble ul, .brain-msg .bubble ol { margin: 0 0 10px; padding-left: 22px; }
.brain-msg .bubble li { margin: 3px 0; }
.brain-msg .bubble li > p { margin: 0; }
.brain-msg .bubble h1, .brain-msg .bubble h2, .brain-msg .bubble h3, .brain-msg .bubble h4 {
  font-family: var(--font-heading, 'Outfit', sans-serif); line-height: 1.25; margin: 14px 0 6px;
}
.brain-msg .bubble h1 { font-size: 20px; }
.brain-msg .bubble h2 { font-size: 18px; }
.brain-msg .bubble h3 { font-size: 16px; }
.brain-msg .bubble h4 { font-size: 14px; }
.brain-msg .bubble a { color: var(--color-primary, #219EBC); text-decoration: underline; }
.brain-msg .bubble code {
  background: rgba(2, 48, 71, 0.07); padding: 1px 5px; border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em;
}
.brain-msg .bubble pre {
  background: #06212e; color: #e8f3f9; padding: 12px 14px; border-radius: 10px;
  overflow-x: auto; margin: 0 0 10px;
}
.brain-msg .bubble pre code { background: none; padding: 0; color: inherit; font-size: 13px; }
.brain-msg .bubble blockquote { border-left: 3px solid var(--border, #e2e8f0); margin: 0 0 10px; padding: 2px 0 2px 12px; color: var(--text-muted, #475569); }
.brain-msg .bubble table { border-collapse: collapse; margin: 0 0 10px; font-size: 13px; }
.brain-msg .bubble th, .brain-msg .bubble td { border: 1px solid var(--border, #e2e8f0); padding: 5px 9px; text-align: left; }
.brain-msg .bubble hr { border: 0; border-top: 1px solid var(--border, #e2e8f0); margin: 12px 0; }
.brain-msg .bubble img { max-width: 100%; border-radius: 8px; }
.brain-msg.user .brain-tool-chip { /* (tool chips only appear on assistant msgs) */ }
.brain-tool-chip { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-muted, #475569); background: var(--bg, #f8fafc); border: 1px dashed var(--border, #e2e8f0); border-radius: 999px; padding: 5px 12px; margin-top: 6px; }

/* ---------- Share conversation ---------- */
.brain-share-details { margin: 10px 0; border: 1px solid var(--border, #e2e8f0); border-radius: 12px; background: #fff; overflow: hidden; }
.brain-share-details > summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; font-size: 14px; font-weight: 600; color: var(--text, #0f172a);
}
.brain-share-details > summary::-webkit-details-marker { display: none; }
.brain-share-details > summary i.bi { color: var(--color-primary, #219EBC); }
.brain-share-details > summary:hover { background: var(--bg, #f8fafc); }
.brain-share { padding: 4px 16px 16px; border-top: 1px solid var(--border, #e2e8f0); }
.brain-share-section { margin-top: 16px; }
.brain-share-label {
  display: block; font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--text-muted, #475569); margin-bottom: 7px;
}
.brain-share-row { display: flex; gap: 8px; align-items: stretch; }
/* One shared control height so the select, input, and button line up. */
.brain-share-control {
  height: 40px; box-sizing: border-box; padding: 0 12px;
  border: 1px solid var(--border, #e2e8f0); border-radius: 9px;
  font: inherit; font-size: 14px; background: #fff; color: var(--text, #0f172a);
}
.brain-share select.brain-share-control { width: 100%; max-width: 320px; }
.brain-share-row input.brain-share-control { flex: 1; min-width: 0; }
.brain-share-control:focus { outline: 2px solid var(--color-primary, #219EBC); outline-offset: 1px; border-color: var(--color-primary, #219EBC); }
.brain-share-btn {
  height: 40px; min-height: 40px; flex-shrink: 0;
  display: inline-flex; align-items: center; gap: 6px; padding: 0 16px; white-space: nowrap;
}
.brain-share-people { margin-top: 16px; }
.brain-share-person {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  font-size: 13px; padding: 8px 0; border-top: 1px solid var(--border, #e2e8f0);
}
.brain-share-person span { display: inline-flex; align-items: center; gap: 7px; color: var(--text, #0f172a); }
.brain-share-person span i.bi { color: var(--text-muted, #475569); }
.brain-share-remove { display: inline-flex; align-items: center; justify-content: center; padding: 6px 10px; min-height: 0; }
.brain-tool-chip .spin { width: 11px; height: 11px; border: 2px solid var(--color-primary, #219EBC); border-top-color: transparent; border-radius: 50%; animation: brain-spin 0.7s linear infinite; }
.brain-typing { display: inline-flex; align-items: center; gap: 4px; padding: 2px 0; }
.brain-typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--color-primary, #219EBC); opacity: 0.4; animation: brain-typing-bounce 1.2s infinite ease-in-out; }
.brain-typing span:nth-child(2) { animation-delay: 0.18s; }
.brain-typing span:nth-child(3) { animation-delay: 0.36s; }
@keyframes brain-typing-bounce { 0%, 80%, 100% { transform: translateY(0); opacity: 0.35; } 40% { transform: translateY(-4px); opacity: 0.9; } }
@keyframes brain-spin { to { transform: rotate(360deg); } }
.brain-composer { display: flex; gap: 10px; padding: 14px 4px; border-top: 1px solid var(--border, #e2e8f0); }
.brain-composer textarea { flex: 1; resize: none; padding: 12px 14px; border: 1px solid var(--border, #e2e8f0); border-radius: 10px; font-family: inherit; font-size: 15px; line-height: 1.5; max-height: 160px; }
.brain-composer textarea:focus { outline: 2px solid var(--color-primary, #219EBC); outline-offset: 1px; }
.brain-empty { text-align: center; color: var(--text-muted, #475569); margin: auto; max-width: 420px; }
.brain-empty h3 { font-family: var(--font-heading, 'Outfit', sans-serif); color: var(--text, #0f172a); }

/* ---------- Connections ---------- */
.brain-card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.brain-tool-card { background: #fff; border: 1px solid var(--border, #e2e8f0); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.brain-tool-card .tool-head { display: flex; align-items: center; gap: 10px; }
.brain-tool-card img { width: 34px; height: 34px; border-radius: 8px; object-fit: contain; background: #fff; }
.brain-tool-card .name { font-weight: 600; }
.brain-badge { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; padding: 3px 8px; border-radius: 4px; }
.brain-badge.connected { background: rgba(16,185,129,0.12); color: #047857; }
.brain-badge.pending { background: rgba(255,183,3,0.16); color: #92660a; }

/* Connected-account rows + actions on a tool card */
.brain-acct-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.brain-acct-label { font-size: 13px; color: var(--text-muted, #475569); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.brain-acct-actions { display: flex; gap: 4px; flex-shrink: 0; }
.brain-card-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; padding: 0; border-radius: 8px;
  border: 1px solid var(--border, #e2e8f0); background: #fff; color: var(--text-muted, #475569);
  cursor: pointer; font-size: 13px; line-height: 1;
}
.btn-icon:hover { background: var(--bg, #f8fafc); color: var(--text, #0f172a); }
.btn-icon.danger:hover { background: rgba(239,68,68,0.08); color: var(--danger, #ef4444); border-color: rgba(239,68,68,0.4); }
.btn-icon i.bi { margin: 0; }

/* Tools list in the detail modal */
.brain-tool-row { padding: 9px 0; border-top: 1px solid var(--border, #e2e8f0); }
.brain-tool-row:first-of-type { border-top: 0; }
.brain-tool-row-name { font-size: 13px; font-weight: 600; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.brain-tool-row-desc { font-size: 13px; color: var(--text-muted, #475569); margin-top: 2px; line-height: 1.5; }

/* ---------- SamePage ---------- */
.brain-samepage { max-width: 820px; margin: 0 auto; background: #fff; border: 1px solid var(--border, #e2e8f0); border-radius: 14px; padding: 28px 32px; min-height: 70vh; }
.brain-save-state { font-size: 12px; color: var(--text-muted, #475569); }

/* ---------- Settings / generic panels ---------- */
.brain-panel { background: #fff; border: 1px solid var(--border, #e2e8f0); border-radius: 14px; padding: 24px 26px; margin-bottom: 20px; max-width: 720px; }
.brain-panel h3 { font-family: var(--font-heading, 'Outfit', sans-serif); margin: 0 0 4px; }
.brain-panel .panel-sub { color: var(--text-muted, #475569); margin: 0 0 18px; font-size: 14px; }
.brain-quick-links { display: flex; flex-direction: column; gap: 8px; }
.brain-quick-link { display: flex; align-items: center; gap: 8px; color: #cfe8f3; text-decoration: none; font-size: 14px; padding: 8px 12px; border-radius: 9px; }
.brain-quick-link:hover { background: rgba(140, 202, 230, 0.12); color: #fff; }
.brain-table { width: 100%; border-collapse: collapse; }
.brain-table th, .brain-table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border, #e2e8f0); font-size: 14px; }
.brain-inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }

/* ---------- Settings forms ---------- */
.brain-form-field { margin-bottom: 16px; }
.brain-form-field label,
.brain-field-label {
  display: block; font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--text-muted, #475569); margin-bottom: 7px;
}
.brain-input {
  width: 100%; box-sizing: border-box; height: 42px; padding: 0 12px;
  border: 1px solid var(--border, #e2e8f0); border-radius: 9px;
  font: inherit; font-size: 15px; background: #fff; color: var(--text, #0f172a);
}
.brain-input:focus { outline: 2px solid var(--color-primary, #219EBC); outline-offset: 1px; border-color: var(--color-primary, #219EBC); }

/* Theme color pickers */
.brain-color-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 18px; }
.brain-color-row { display: flex; align-items: center; gap: 10px; }
.brain-color-row input[type="color"] {
  width: 46px; height: 42px; flex-shrink: 0; padding: 3px; cursor: pointer;
  border: 1px solid var(--border, #e2e8f0); border-radius: 9px; background: #fff;
}
.brain-color-row .brain-input { max-width: 150px; }
@media (max-width: 600px) { .brain-color-grid { grid-template-columns: 1fr; } }

/* Text-style link button (e.g. "Reset" in Theme) */
.brain-linklike { background: none; border: 0; padding: 0; color: var(--color-primary, #219EBC); font: inherit; font-size: 13px; cursor: pointer; display: inline-flex; align-items: center; gap: 5px; }
.brain-linklike:hover { text-decoration: underline; }

/* Searchable combobox (font picker) */
.brain-combobox { position: relative; }
.brain-combobox > .brain-input { padding-right: 38px; }
.brain-combobox-toggle { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); background: none; border: 0; color: var(--text-muted, #475569); cursor: pointer; padding: 6px; font-size: 12px; line-height: 1; }
.brain-combobox-menu { display: none; position: absolute; left: 0; right: 0; top: calc(100% + 6px); z-index: 60; background: #fff; border: 1px solid var(--border, #e2e8f0); border-radius: 10px; box-shadow: 0 18px 42px rgba(2, 48, 71, 0.18); max-height: 260px; overflow-y: auto; padding: 6px; }
.brain-combobox.open .brain-combobox-menu { display: block; }
.brain-combobox-option { padding: 9px 11px; border-radius: 8px; cursor: pointer; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brain-combobox-option:hover { background: var(--bg, #f8fafc); }
.brain-combobox-empty { padding: 9px 11px; font-size: 13px; color: var(--text-muted, #475569); }

/* Org logo in the sidebar brand */
.brain-brand-logo { height: 30px; width: auto; max-width: 190px; object-fit: contain; display: block; }

/* Logo / icon upload */
.brain-asset { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.brain-asset-preview {
  height: 56px; width: 56px; flex-shrink: 0; object-fit: contain; background: var(--bg, #f8fafc);
  border: 1px solid var(--border, #e2e8f0); border-radius: 12px; padding: 6px;
}
.brain-asset-preview.placeholder { display: flex; align-items: center; justify-content: center; color: var(--text-muted, #475569); font-size: 22px; }
.brain-file {
  font-size: 13px; color: var(--text-muted, #475569);
}
.brain-file::file-selector-button {
  font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; margin-right: 10px;
  padding: 9px 14px; border: 1px solid var(--border, #e2e8f0); border-radius: 8px; background: #fff; color: var(--text, #0f172a);
}
.brain-file::file-selector-button:hover { background: var(--bg, #f8fafc); }

/* Aligned quick-link add form */
.brain-quicklink-form { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-top: 16px; }
.brain-quicklink-form .qf { display: flex; flex-direction: column; flex: 1; min-width: 160px; }
.brain-quicklink-form .brain-btn-aligned { height: 42px; min-height: 42px; display: inline-flex; align-items: center; gap: 6px; padding: 0 18px; }
.brain-mini-select { padding: 6px 10px; border: 1px solid var(--border, #e2e8f0); border-radius: 8px; font: inherit; font-size: 13px; background: #fff; }
select.brain-input { -webkit-appearance: none; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 16 16' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }

/* ---------- New-brain access options ---------- */
.brain-access-option {
  display: flex; align-items: flex-start; gap: 12px; cursor: pointer;
  border: 1px solid var(--border, #e2e8f0); border-radius: 12px; padding: 14px 16px; margin-bottom: 10px;
}
.brain-access-option:hover { border-color: var(--color-primary, #219EBC); }
.brain-access-option input[type="radio"] { margin-top: 3px; }
.brain-access-option span { display: flex; flex-direction: column; gap: 2px; }
.brain-access-option span strong { font-weight: 600; }
.brain-access-option span strong i.bi { color: var(--color-primary, #219EBC); margin-right: 6px; }
.brain-access-option span small { color: var(--text-muted, #475569); }
.brain-member-list { display: flex; flex-direction: column; gap: 2px; max-height: 220px; overflow-y: auto; border: 1px solid var(--border, #e2e8f0); border-radius: 10px; padding: 8px; }
.brain-member-row { display: flex; align-items: center; gap: 9px; padding: 7px 8px; border-radius: 8px; cursor: pointer; font-size: 14px; }
.brain-member-row:hover { background: var(--bg, #f8fafc); }

/* ---------- Brains list (settings) ---------- */
.brain-list-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-top: 1px solid var(--border, #e2e8f0); }
.brain-list-row:first-child { border-top: 0; }
.brain-list-name { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; }
.brain-list-name i.bi { color: var(--color-primary, #219EBC); }
.brain-list-meta { font-size: 12px; color: var(--text-muted, #475569); margin-left: 6px; font-weight: 400; }

/* ---------- Modal ---------- */
.brain-modal-backdrop {
  position: fixed; inset: 0; z-index: 200; background: rgba(2, 48, 71, 0.55);
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.brain-modal-backdrop.open { display: flex; }
.brain-modal {
  background: #fff; border-radius: 16px; max-width: 460px; width: 100%;
  padding: 26px; box-shadow: 0 24px 60px rgba(2, 48, 71, 0.35);
}
.brain-modal h3 { font-family: var(--font-heading, 'Outfit', sans-serif); margin: 0 0 8px; display: flex; align-items: center; gap: 8px; }
.brain-modal h3 i.bi { color: var(--danger, #ef4444); }
.brain-modal p { color: var(--text-muted, #475569); margin: 0 0 16px; line-height: 1.55; }
.brain-modal .brain-input { margin-bottom: 18px; }
.brain-modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
.btn-danger { background: var(--danger, #ef4444); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-danger:disabled { opacity: 0.5; cursor: not-allowed; }

/* Buttons (incl. <a class="btn">) should follow the org's themed font, not the
   hardcoded Inter from style.css. Falls back to Inter when no theme font is set. */
.brain-body .btn { font-family: var(--font-body, 'Inter', -apple-system, BlinkMacSystemFont, sans-serif); }

/* Slack-branded button: fixed aubergine + white so it stays readable on any themed
   (white or tinted) background, independent of the org's accent/primary colors. */
.btn-slack { background: #4A154B; color: #fff; }
.btn-slack:hover { background: #611f5f; color: #fff; transform: translateY(-1px); }

/* ---------- Buttons with icons ---------- */
.btn i.bi { font-size: 1em; line-height: 1; vertical-align: -1px; margin-right: 6px; }
.btn .bi-only { margin-right: 0; }
.brain-nav-link i.bi { font-size: 15px; width: 18px; text-align: center; }

/* ---------- Custom dropdown picker ---------- */
.brain-picker { position: relative; width: 100%; }
.brain-picker-btn {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 10px 12px; border-radius: 9px; cursor: pointer;
  font: inherit; font-size: 14px; text-align: left;
}
.brain-picker-btn .label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.brain-picker-btn .bi-chevron-down { transition: transform 0.15s ease; font-size: 12px; opacity: 0.8; }
.brain-picker.open .brain-picker-btn .bi-chevron-down { transform: rotate(180deg); }
.brain-picker-menu {
  display: none; position: absolute; left: 0; right: 0; top: calc(100% + 6px); z-index: 60;
  background: #fff; border: 1px solid var(--border, #e2e8f0); border-radius: 10px;
  box-shadow: 0 18px 42px rgba(2, 48, 71, 0.18); padding: 6px; max-height: 320px; overflow-y: auto;
}
.brain-picker.open .brain-picker-menu { display: block; }
.brain-picker-item {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 10px; border-radius: 8px; text-decoration: none; color: var(--text, #0f172a);
  font-size: 14px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.brain-picker-item:hover { background: var(--bg, #f8fafc); }
.brain-picker-item.active { background: rgba(255, 183, 3, 0.14); font-weight: 600; }
.brain-picker-item i.bi { flex-shrink: 0; }
.brain-picker-item-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* History picker: hovering an option wraps its (otherwise clipped) title to reveal the full text. */
.brain-picker.on-light .brain-picker-item:hover { white-space: normal; align-items: flex-start; }
.brain-picker.on-light .brain-picker-item:hover .brain-picker-item-text { white-space: normal; overflow: visible; }
.brain-picker-divider { height: 1px; background: var(--border, #e2e8f0); margin: 6px 4px; }

/* Dark picker variant for the sidebar (brain switcher). */
.brain-picker.on-dark .brain-picker-btn {
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(140, 202, 230, 0.25); color: #fff;
}
.brain-picker.on-dark .brain-picker-btn:hover { background: rgba(140, 202, 230, 0.14); }

/* Light picker variant for the chat history control in the topbar. */
.brain-picker.on-light { width: auto; min-width: 200px; max-width: 260px; }
.brain-picker.on-light .brain-picker-btn { background: #fff; border: 1px solid var(--border, #e2e8f0); color: var(--text, #0f172a); }

/* ---------- Connections search + async grid ---------- */
.brain-search {
  position: relative; max-width: 380px; margin-bottom: 20px;
}
.brain-search i.bi { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted, #475569); }
.brain-search input {
  width: 100%; box-sizing: border-box; padding: 11px 14px 11px 38px;
  border: 1px solid var(--border, #e2e8f0); border-radius: 10px; font: inherit; font-size: 15px;
}
.brain-search input:focus { outline: 2px solid var(--color-primary, #219EBC); outline-offset: 1px; }
.brain-loading { color: var(--text-muted, #475569); display: flex; align-items: center; gap: 10px; padding: 20px 0; }
.brain-loading .spin { width: 16px; height: 16px; border: 2px solid var(--color-primary, #219EBC); border-top-color: transparent; border-radius: 50%; animation: brain-spin 0.7s linear infinite; }