.chat-layout { max-width: 1320px; margin: auto; padding: 32px var(--pad-x); display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; }
.chat-sidebar { padding-top: 24px; }
.chat-eyebrow, .chat-welcome-tag { font-size: .75rem; font-weight: 700; letter-spacing: .1em; color: var(--gold); }
.chat-sidebar h1 { font-size: 2.6rem; letter-spacing: -.05em; line-height: 1.1; margin: 18px 0; }
.chat-sidebar p { font-size: 1rem; line-height: 1.7; color: var(--muted); }
.chat-new { width: 100%; padding: 14px 16px; margin-top: 18px; background: white; color: var(--ink); border: 1px solid var(--line-strong); border-radius: 12px; text-align: left; font: inherit; cursor: pointer; }
.chat-help { margin-top: 72px; border-top: 1px solid var(--line-strong); padding-top: 24px; }
.chat-help a { display: flex; justify-content: space-between; gap: 10px; padding: 10px 0; color: var(--ink); font-size: .95rem; font-weight: 600; }
.chat-panel { display: flex; flex-direction: column; min-width: 0; height: min(810px, calc(100dvh - 140px)); min-height: 620px; background: white; border: 1px solid var(--line-strong); border-radius: 24px; box-shadow: var(--shadow); overflow: hidden; }
.chat-header { display: flex; gap: 12px; align-items: center; border-bottom: 1px solid var(--line); padding: 20px 28px; }
.chat-header strong { display: block; font-size: 1rem; }
.chat-header div > span { color: var(--muted); font-size: .875rem; }
.chat-ai { margin-left: auto; font-size: .75rem; font-weight: 700; color: var(--gold); padding: 5px 8px; border-radius: 6px; background: var(--green-soft); }
.chat-messages { flex: 1; overflow-y: auto; overscroll-behavior: contain; padding: 28px; }
.chat-welcome { max-width: 570px; margin: 22px auto; }
.chat-welcome h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); line-height: 1.12; letter-spacing: -.045em; margin: 18px 0; }
.chat-welcome > p { font-size: 1rem; line-height: 1.65; color: var(--muted); max-width: 440px; }
.chat-suggestions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 28px; }
.chat-suggestions button { position: relative; text-align: left; padding: 16px 30px 16px 16px; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--bg-soft); font: inherit; font-size: .875rem; line-height: 1.45; color: var(--ink); cursor: pointer; }
.chat-suggestions button span { display: block; color: var(--muted); font-size: .75rem; margin-bottom: 5px; }
.chat-suggestions b { position: absolute; right: 13px; top: 19px; font-size: 1rem; color: var(--green); }
.chat-suggestions button:hover, .chat-new:hover { border-color: var(--green); }
.chat-message { margin-bottom: 24px; max-width: 94%; }
.chat-message--user { margin-left: auto; width: fit-content; max-width: 85%; }
.chat-message-label { font-size: .75rem; color: var(--muted); margin: 0 0 7px; font-weight: 600; }
.chat-message-text { white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.7; font-size: 1rem; }
.chat-message--user .chat-message-text { background: var(--green-soft); padding: 12px 18px; border-radius: 16px 16px 4px 16px; }
.chat-sources { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.chat-sources a, .chat-support-link { display: inline-block; border: 1px solid var(--line-strong); border-radius: 8px; padding: 7px 10px; font-size: .875rem; color: var(--gold); }
.chat-support-link { margin-top: 14px; font-weight: 600; }
.chat-composer-area { padding: 0 24px 18px; }
.chat-composer { display: flex; align-items: flex-end; gap: 12px; border: 1px solid var(--line-strong); border-radius: 16px; padding: 12px; background: var(--bg-soft); }
.chat-composer:focus-within { outline: 2px solid var(--green); outline-offset: 2px; }
.chat-composer textarea { resize: vertical; max-height: 160px; min-height: 50px; min-width: 0; flex: 1; border: 0; outline: none; background: transparent; font: inherit; font-size: 1rem; color: var(--ink); line-height: 1.5; padding: 3px; }
.chat-send { display: grid; place-items: center; flex-shrink: 0; width: 44px; height: 44px; border: 0; border-radius: 12px; font-size: 1.7rem; background: var(--green-strong); color: white; cursor: pointer; }
.chat-layout button:disabled { opacity: .5; cursor: not-allowed; }
.chat-layout button:focus-visible, .chat-layout a:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
.chat-notice { font-size: .75rem; line-height: 1.5; color: var(--muted); margin: 12px 2px 0; }
.chat-notice a { color: var(--gold); text-decoration: underline; }
.chat-status { color: var(--gold); font-size: .875rem; min-height: 1.4em; margin: 0 0 8px; }
.chat-error { color: #9a3021; font-size: .875rem; line-height: 1.5; margin: 8px 0; }
.chat-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.chat-document { max-width: 900px; margin: 40px auto; padding: 0 24px; }
.chat-document h1 { margin-top: 24px; }
.chat-document pre { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; line-height: 1.8; padding: 24px; background: white; border-radius: 16px; margin-top: 24px; }
@media (max-width: 1000px) { .chat-layout { grid-template-columns: 210px minmax(0, 1fr); gap: 24px; padding: 24px; } .chat-header, .chat-messages { padding: 20px; } }
@media (max-width: 760px) {
    .chat-layout { display: block; padding: 12px; }
    .chat-sidebar { display: flex; align-items: center; gap: 12px; padding: 0 4px 12px; }
    .chat-sidebar h1 { font-size: 1.4rem; margin: 0; }
    .chat-sidebar > .chat-eyebrow, .chat-sidebar > p, .chat-help { display: none; }
    .chat-new { width: auto; margin: 0 0 0 auto; padding: 9px 12px; font-size: .875rem; }
    .chat-panel { height: calc(100dvh - 150px); min-height: 560px; border-radius: 18px; }
    .chat-header { padding: 16px; } .chat-header div > span { font-size: .75rem; }
    .chat-messages { padding: 20px 16px; } .chat-welcome { margin: 4px auto; }
    .chat-composer-area { padding: 0 14px 14px; } .chat-suggestions { gap: 8px; }
}
@media (max-width: 390px) { .chat-suggestions { grid-template-columns: 1fr; } }