:root,[data-theme=light]{--color-primary:#027697;--color-secondary:#081a3a;--color-accent:#032e72;--color-bg:#f4f8fa;--color-bg-gradient-start:#e8f4f8;--color-bg-gradient-end:#f8fbfc;--color-surface:#ffffffd9;--color-surface-solid:#fff;--color-text:#032e72;--color-text-muted:#4a6080;--color-border:#032e721f;--color-user-bubble:#027697;--color-user-text:#fff;--color-assistant-bubble:#fff;--color-shadow:0 4px 24px #00000014;--color-glass-overlay:#ffffff1f;--color-open:#1a8f5a;--color-closed:#c0392b;--color-focus:#027697;--radius-card:16px;--radius-bubble:24px;--radius-chip:999px;--spacing-section:24px;--spacing-gap:16px;--font-body:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-size-body:15px;--line-height-body:1.6}[data-theme=dark]{--color-bg:#081a3a;--color-bg-gradient-start:#061428;--color-bg-gradient-end:#0c2248;--color-surface:#0c2248bf;--color-surface-solid:#0f2a52;--color-text:#e8f0f8;--color-text-muted:#9bb0c8;--color-border:#ffffff1a;--color-assistant-bubble:#0f2a52;--color-shadow:0 4px 24px #00000059;--color-glass-overlay:#081a3a26}*,:before,:after{box-sizing:border-box}html,body{min-height:100%;font-family:var(--font-body);font-size:var(--font-size-body);line-height:var(--line-height-body);color:var(--color-text);background:linear-gradient(160deg, var(--color-bg-gradient-start) 0%, var(--color-bg-gradient-end) 100%);-webkit-font-smoothing:antialiased;margin:0;padding:0}body{min-height:100dvh}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.chat-app{flex-direction:column;max-width:720px;min-height:100dvh;margin:0 auto;display:flex}.chat-header{align-items:center;gap:var(--spacing-gap);padding:var(--spacing-gap) var(--spacing-section);background:var(--color-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border);box-shadow:var(--color-shadow);z-index:10;grid-template-columns:1fr auto 1fr;display:grid;position:sticky;top:0}.chat-header__brand{justify-self:start}.chat-header__logo-link{align-items:center;line-height:0;display:inline-flex}.chat-header__logo-link:focus-visible{outline:2px solid var(--color-focus);outline-offset:4px;border-radius:4px}.chat-header__logo{object-fit:contain;object-position:left center;width:auto;max-width:140px;height:40px}.chat-header__title{letter-spacing:.02em;color:var(--color-primary);text-align:center;margin:0;font-size:1.125rem;font-weight:600}.chat-header__actions{justify-self:end;align-items:center;gap:8px;display:flex}.chat-header__select,.chat-header__theme-btn{background:var(--color-surface-solid);border:1px solid var(--color-border);color:var(--color-text);cursor:pointer;border-radius:12px;min-height:40px;padding:8px 12px;font-size:14px}.chat-header__theme-btn{justify-content:center;align-items:center;width:40px;padding:0;display:flex}.chat-header__select:focus-visible,.chat-header__theme-btn:focus-visible,.chip:focus-visible,.chat-input-dock__send:focus-visible,.chat-input-dock__textarea:focus-visible,.privacy-card__btn:focus-visible,.message__copy:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.info-strip{padding:10px var(--spacing-section);color:var(--color-text-muted);background:var(--color-glass-overlay);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;display:flex}.info-strip__badge{border-radius:var(--radius-chip);padding:4px 12px;font-size:13px;font-weight:600}.info-strip__badge--open{color:var(--color-open);background:#1a8f5a26}.info-strip__badge--closed{color:var(--color-closed);background:#c0392b26}.chat-panel{flex-direction:column;flex:1;min-height:0;display:flex}.chat-panel__messages{padding:var(--spacing-section);gap:var(--spacing-gap);scroll-behavior:smooth;flex-direction:column;flex:1;display:flex;overflow-y:auto}.welcome-card{padding:var(--spacing-section);border-radius:var(--radius-card);background:var(--color-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--color-shadow);border:1px solid var(--color-border);animation:.4s fadeSlideUp;position:relative;overflow:hidden}.welcome-card__accent{background:linear-gradient(90deg, var(--color-primary), var(--color-accent));height:4px;position:absolute;top:0;left:0;right:0}.welcome-card__title{color:var(--color-secondary);margin:0 0 8px;font-size:1.5rem}[data-theme=dark] .welcome-card__title{color:var(--color-text)}.welcome-card__tagline{color:var(--color-primary);margin:0 0 4px;font-weight:600}.welcome-card__subtitle{color:var(--color-text-muted);margin:0 0 20px}.welcome-card__chips{flex-wrap:wrap;gap:10px;display:flex}.chip{border-radius:var(--radius-chip);border:1px solid var(--color-border);background:var(--color-surface-solid);color:var(--color-accent);cursor:pointer;padding:10px 16px;font-size:14px;transition:transform .15s,box-shadow .15s}.chip:hover{box-shadow:var(--color-shadow);border-color:var(--color-primary);transform:translateY(-1px)}.message{flex-direction:column;max-width:88%;display:flex}.message--user{align-self:flex-end;align-items:flex-end}.message--assistant{align-self:flex-start;align-items:flex-start}.message-enter{animation:.35s fadeSlideUp}.message__bubble{border-radius:var(--radius-bubble);box-shadow:var(--color-shadow);word-break:break-word;padding:14px 18px;position:relative}.message--user .message__bubble{background:var(--color-user-bubble);color:var(--color-user-text);border-bottom-right-radius:6px}.message--assistant .message__bubble{background:var(--color-assistant-bubble);color:var(--color-text);border:1px solid var(--color-border);border-bottom-left-radius:6px}.message__bubble p{margin:0}.message__markdown p{margin:0 0 .75em}.message__markdown p:last-child{margin-bottom:0}.message__markdown ul,.message__markdown ol{margin:.5em 0;padding-left:1.25em}.message__markdown a{color:var(--color-primary)}.message__copy{cursor:pointer;opacity:0;background:0 0;border:none;border-radius:6px;padding:4px;font-size:14px;transition:opacity .2s;position:absolute;top:8px;right:8px}.message__bubble:hover .message__copy{opacity:.7}.message__meta{color:var(--color-text-muted);flex-wrap:wrap;gap:8px;margin-top:6px;font-size:13px;display:flex}.message__sources a{color:var(--color-primary);margin-right:8px}.typing-indicator{background:var(--color-assistant-bubble);border-radius:var(--radius-bubble);border:1px solid var(--color-border);gap:6px;padding:16px 20px;display:flex}.typing-indicator span{background:var(--color-primary);border-radius:50%;width:8px;height:8px;animation:1.2s ease-in-out infinite pulse}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}.chat-input-dock{padding:var(--spacing-gap) var(--spacing-section) var(--spacing-section);background:var(--color-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--color-border);position:sticky;bottom:0}.chat-input-dock__row{align-items:flex-end;gap:10px;display:flex}.chat-input-dock__textarea{resize:none;border-radius:var(--radius-card);border:1px solid var(--color-border);background:var(--color-surface-solid);min-height:48px;max-height:160px;color:var(--color-text);font-family:inherit;font-size:var(--font-size-body);line-height:var(--line-height-body);flex:1;padding:12px 16px}.chat-input-dock__send{background:var(--color-primary);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;width:48px;height:48px;font-size:18px;transition:opacity .2s}.chat-input-dock__send:disabled{opacity:.5;cursor:not-allowed}.chat-input-dock__footer{justify-content:space-between;align-items:flex-start;gap:12px;margin-top:10px;display:flex}.chat-input-dock__disclaimer{color:var(--color-text-muted);flex:1;margin:0;font-size:13px}.chat-input-dock__counter{color:var(--color-text-muted);white-space:nowrap;font-size:13px}.error-toast{border-radius:var(--radius-card);color:var(--color-closed);cursor:pointer;background:#c0392b1f;border:1px solid #c0392b4d;align-self:center;padding:12px 20px;font-size:14px;animation:.3s fadeSlideUp}.privacy-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;padding:var(--spacing-section);background:#081a3a99;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.privacy-card{max-width:420px;padding:var(--spacing-section);border-radius:var(--radius-card);background:var(--color-surface-solid);box-shadow:var(--color-shadow);border:1px solid var(--color-border)}.privacy-card h2{margin:0 0 12px;font-size:1.25rem}.privacy-card p{color:var(--color-text-muted);margin:0 0 20px}.privacy-card__btn{border-radius:var(--radius-card);background:var(--color-primary);color:#fff;width:100%;font-size:var(--font-size-body);cursor:pointer;border:none;padding:14px;font-weight:600}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,80%,to{opacity:.35;transform:scale(.85)}40%{opacity:1;transform:scale(1)}}@media (min-width:768px){.chat-app{max-width:800px}.welcome-card__title{font-size:1.75rem}}@media (max-width:374px){.chat-header{padding:12px 16px}.chat-header__title{font-size:1rem}.welcome-card__chips{flex-direction:column}.chip{text-align:left;width:100%}}