html:has(body.ai-app-shell), body.ai-app-shell { height: 100%; overflow: hidden; }
body.ai-app-shell { min-height: 100dvh; background: linear-gradient(180deg, var(--tint) 0%, #fff 44%, var(--tint-2) 100%); }
#nl-badge-frame { display: none !important; visibility: hidden !important; }
.ai-app-header { position: sticky; top: 0; z-index: 40; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: saturate(1.4) blur(10px); }
.ai-app-header-in { min-height: 58px; display: flex; align-items: center; gap: 14px; }
.ai-product-mark { font: 900 18px/1 var(--display); color: var(--ink); letter-spacing: 0; }
.ai-app-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.ai-app-main { height: calc(100dvh - 59px); padding: 12px; overflow: hidden; }
.ai-app-grid { width: min(100%, 1440px); height: 100%; margin: 0 auto; display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 12px; align-items: stretch; }
.ai-app-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); }
.ai-app-intro { padding: 18px; display: flex; flex-direction: column; gap: 12px; min-height: 0; overflow: hidden; }
.ai-intro-copy { display: grid; gap: 8px; }
.ai-app-intro h1 { font-size: clamp(28px, 3vw, 40px); margin: 0; line-height: .98; }
.ai-app-intro .lead { margin: 0; font-size: 15px; line-height: 1.35; }
.ai-app-status { border-radius: 14px; background: var(--tint); color: var(--muted); padding: 10px 12px; font-weight: 800; font-size: 14px; }
.ai-app-status[data-state="ok"] { background: var(--ok-soft); color: var(--ok); }
.ai-app-status[data-state="error"] { background: var(--pink-soft); color: #8A1F45; }
.ai-login, .ai-session { display: grid; gap: 10px; }
.ai-login label { display: grid; gap: 5px; color: var(--ink); font-weight: 800; font-size: 14px; }
.ai-login input, .ai-chat-form textarea { width: 100%; border: 1.5px solid var(--line); border-radius: 14px; background: #fff; color: var(--ink); }
.ai-login input { min-height: 44px; padding: 9px 12px; }
.ai-login p { margin: 0; font-size: 14px; }
.ai-session-email { margin: 0; color: var(--muted); font-weight: 800; overflow-wrap: anywhere; }
.ai-app-note { margin-top: auto; display: grid; gap: 4px; border-left: 6px solid var(--sun); background: var(--sun-soft); border-radius: 14px; padding: 12px 14px; }
.ai-app-note strong { font-family: var(--display); font-size: 17px; line-height: 1.05; }
.ai-app-note span { color: var(--muted); font-size: 13.5px; line-height: 1.35; }
.ai-app-chat { min-height: 0; display: flex; flex-direction: column; overflow: hidden; }
.ai-chat-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 16px 18px 10px; border-bottom: 1px solid var(--line); }
.ai-chat-head h2 { margin: 0; font-size: clamp(22px, 2.2vw, 30px); }
.ai-chat-head .eyebrow, .ai-app-intro .eyebrow { margin-bottom: 0; }
.ai-chat-log { flex: 1; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; padding: 18px clamp(18px, 4vw, 70px); background: #FAFAFD; }
.ai-msg { max-width: min(78%, 760px); padding: 12px 15px; border-radius: 18px; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 15.5px; line-height: 1.48; }
.ai-msg.assistant { align-self: flex-start; background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 6px; }
.ai-msg.user { align-self: flex-end; background: var(--cobalt); color: #fff; border-bottom-right-radius: 6px; }
.ai-msg.system { align-self: center; max-width: 96%; background: var(--sun-soft); color: var(--ink); text-align: center; font-weight: 800; }
.ai-msg.thinking { align-self: flex-start; background: #fff; border: 1px dashed var(--cobalt); color: var(--muted); }
.ai-chip-row { display: flex; gap: 8px; overflow-x: auto; padding: 10px clamp(18px, 4vw, 70px) 0; scrollbar-width: none; }
.ai-chip-row button { flex: none; min-height: 38px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; padding: 0 14px; color: var(--ink); font: 800 13.5px/1 var(--body); cursor: pointer; }
.ai-chip-row button:hover { border-color: var(--cobalt); color: var(--cobalt); }
.ai-chat-form { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 10px; padding: 12px clamp(18px, 4vw, 70px); align-items: end; }
.ai-chat-form textarea { min-height: 48px; max-height: 110px; resize: none; padding: 13px 14px; line-height: 1.35; box-shadow: 0 14px 30px rgba(17,22,64,.08); }
.ai-chat-foot { color: var(--muted); font-size: 12.5px; padding: 0 clamp(18px, 4vw, 70px) 12px; margin: 0; text-align: center; }
.ai-locked .ai-chat-form, .ai-locked .ai-chip-row { opacity: .5; pointer-events: none; }
@media (max-width: 900px) {
  .ai-app-main { padding: 10px; }
  .ai-app-grid { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); }
  .ai-app-intro { padding: 14px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 280px); gap: 12px; align-items: start; }
  .ai-intro-copy { grid-column: 1; }
  .ai-app-status, .ai-login, .ai-session { grid-column: 2; }
  .ai-app-note { display: none; }
  .ai-app-intro h1 { font-size: 26px; }
  .ai-app-intro .lead { font-size: 14px; }
}
@media (max-width: 620px) {
  .ai-app-header-in { min-height: 54px; }
  .ai-product-mark { font-size: 16px; }
  .ai-app-actions .btn-primary { display: none; }
  .ai-app-main { height: calc(100dvh - 55px); padding: 8px; }
  .ai-app-grid { gap: 8px; }
  .ai-app-intro { grid-template-columns: 1fr; padding: 12px; gap: 8px; }
  .ai-intro-copy { display: none; }
  .ai-app-status, .ai-login, .ai-session { grid-column: 1; }
  .ai-login { grid-template-columns: 1fr 1fr; align-items: end; }
  .ai-login button, .ai-login p { grid-column: 1 / -1; }
  .ai-login input { min-height: 40px; }
  .ai-app-chat { border-radius: 18px; }
  .ai-chat-head { padding: 12px 12px 8px; }
  .ai-chat-head h2 { font-size: 22px; }
  .ai-chat-log { padding: 12px; }
  .ai-msg { max-width: 92%; font-size: 14.5px; }
  .ai-chip-row { padding-inline: 12px; }
  .ai-chat-form { grid-template-columns: 1fr; padding: 10px 12px; }
  .ai-chat-form textarea { min-height: 46px; }
  .ai-chat-foot { padding-inline: 12px; }
}
@media (max-height: 720px) and (min-width: 901px) {
  .ai-app-intro h1 { font-size: 30px; }
  .ai-app-note { display: none; }
  .ai-chat-log { padding-block: 12px; }
  .ai-chip-row { padding-top: 8px; }
}