:root{--c-bg-1: #f5efe4;--c-bg-2: #e7efe9;--c-surface: #fffcf6;--c-surface-2: #f7f2e9;--c-border: rgba(39, 93, 90, .12);--c-border-strong: rgba(39, 93, 90, .22);--c-text: #14302f;--c-text-muted: #5a7475;--c-text-subtle: #82979a;--c-accent: #1f7a75;--c-accent-strong: #185f5b;--c-accent-soft: rgba(31, 122, 117, .12);--c-own: #d8ebe4;--c-own-border: rgba(31, 122, 117, .22);--c-danger: #b13838;--c-danger-soft: rgba(177, 56, 56, .1);--c-warn: #b07023;--c-warn-soft: rgba(176, 112, 35, .14);--c-ok: #1f7a75;--c-ok-soft: rgba(31, 122, 117, .14);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--fs-xs: .75rem;--fs-sm: .85rem;--fs-base: .95rem;--fs-md: 1.05rem;--fs-lg: 1.25rem;--fs-xl: clamp(1.5rem, 3.5vw, 2rem);--sp-1: .25rem;--sp-2: .5rem;--sp-3: .75rem;--sp-4: 1rem;--sp-5: 1.25rem;--sp-6: 1.5rem;--r-sm: 10px;--r-md: 14px;--r-lg: 20px;--r-xl: 26px;--r-pill: 999px;--sh-1: 0 1px 2px rgba(20, 48, 47, .06), 0 2px 6px 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fade-in{0%{opacity:0}to{opacity:1}}.composer-wrap{position:sticky;bottom:0;padding-bottom:max(var(--sp-3),env(safe-area-inset-bottom));padding-top:.5rem;background:linear-gradient(180deg,rgba(245,239,228,0) 0%,var(--c-bg-1) 30%)}.composer{display:grid;gap:.5rem;padding:.65rem .75rem;border-radius:var(--r-lg);background:var(--c-surface);border:1px solid var(--c-border);box-shadow:var(--sh-2)}.composer-row{display:grid;grid-template-columns:auto 1fr auto;align-items:end;gap:.5rem}.composer-field{display:block;min-width:0}.composer-field textarea{border:0;background:transparent;padding:.55rem .4rem;border-radius:0;min-height:2.6rem;max-height:40dvh;overflow-y:auto}.composer-field textarea:focus{box-shadow:none}.selected-file{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.6rem;padding:.4rem .5rem;border-radius:var(--r-md);background:var(--c-surface-2);border:1px solid var(--c-border)}.selected-file-thumb{width:40px;height:40px;border-radius:8px;object-fit:cover;background:var(--c-bg-2)}.selected-file-thumb.placeholder{display:grid;place-items:center;color:var(--c-accent-strong)}.selected-file-thumb.placeholder svg{width:20px;height:20px}.selected-file-info{display:grid;min-width:0}.selected-file-info strong{font-size:var(--fs-sm);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.selected-file-info span{font-size:var(--fs-xs);color:var(--c-text-subtle)}.composer-error{margin:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}@media(min-width:768px){.auth-card{padding:2rem}.chat-shell{padding:var(--sp-5) var(--sp-5) 0;gap:var(--sp-4)}.attachment-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.message-card{max-width:30rem}}@media(min-width:1024px){.chat-shell{max-width:60rem}}@media(max-width:480px){:root{font-size:.95rem}.chat-shell{padding:var(--sp-2) 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