.coach-layout{align-items:start}
.coach-layout .chat{height:min(640px,calc(100vh - 190px));min-height:520px;padding:0;overflow:hidden;background:linear-gradient(180deg,color-mix(in srgb,var(--paper) 92%,var(--soft)),var(--paper))}
.chat .messages{padding:24px 22px 12px;gap:14px;scroll-behavior:smooth}
.chat .bubble{position:relative;max-width:min(78%,620px);padding:15px 17px;border-radius:18px 18px 18px 6px;background:var(--soft);line-height:1.55;box-shadow:0 5px 18px rgba(74,51,42,.04)}
.chat .bubble:not(.user)::before{content:"AVA";display:block;margin-bottom:5px;color:var(--accent);font-size:9px;font-weight:700;letter-spacing:.14em}
.chat .bubble.user{border-radius:18px 18px 6px 18px;background:var(--ink);color:var(--paper)}
.chat>.quick-row{padding:15px 20px 20px;border-top:1px solid var(--line);background:color-mix(in srgb,var(--paper) 94%,transparent);backdrop-filter:blur(10px)}
.chat .quick{padding:10px 15px;background:var(--paper);transition:transform .18s,border-color .18s,background .18s}
.chat .quick:hover{transform:translateY(-1px);border-color:var(--accent);background:var(--soft)}
.coach-layout>aside{position:sticky;top:20px}
.coach-disclaimer{margin:18px 0;padding:13px 14px;border-left:3px solid var(--accent);border-radius:12px;background:var(--soft);color:var(--muted);font-size:12px;line-height:1.55}
@media(max-width:900px){.coach-layout .chat{height:620px;min-height:0}.coach-layout>aside{position:static;order:-1}}
@media(max-width:580px){.coach-layout .chat{height:calc(100vh - 205px);min-height:530px}.chat .messages{padding:18px 14px 10px}.chat .bubble{max-width:88%;padding:13px 14px}.chat>.quick-row{padding:12px 13px 15px;gap:7px}.chat .quick{padding:9px 12px;font-size:12px}}