:root{--color-bg: #0f1115;--color-header-bg: #12141a;--color-header-fg: #e7e9ee;--color-panel-bg: #12141a;--color-assistant-bg: #1a1f2a;--color-assistant-fg: #e7e9ee;--color-user-bg: #2f6df6;--color-user-fg: #ffffff;--color-muted: #a1a7b3;--color-border: rgba(255,255,255,.08);--color-accent: #2f6df6;--color-accent-hover: #2457c9;--radius-xl: 18px;--radius-lg: 14px;--radius-sm: 8px;--shadow-soft: 0 8px 30px rgba(0,0,0,.25);--bubble-max: 76%}@media(prefers-color-scheme:light){:root{--color-bg: #f5f7fb;--color-header-bg: #ffffff;--color-header-fg: #0b0e12;--color-panel-bg: #ffffff;--color-assistant-bg: #eef1f7;--color-assistant-fg: #0b0e12;--color-user-bg: #2f6df6;--color-user-fg: #ffffff;--color-muted: #6a7280;--color-border: rgba(0,0,0,.08)}}*{box-sizing:border-box}html,body,#root{height:100dvh;margin:0;background:var(--color-bg);color:var(--color-assistant-fg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:ui-sans-serif,system-ui,-apple-system,SF Pro Text,Segoe UI,Roboto,Helvetica,Arial}.action-buttons{display:flex;flex-direction:column;align-items:center;gap:.5rem;margin:.5rem 0 .75rem}.action-button{width:80%;max-width:420px;padding:.6rem 1rem;border-radius:12px;border:1px solid var(--color-border);background:var(--color-assistant-bg);color:var(--color-assistant-fg);cursor:pointer;font-size:1rem;text-align:center;box-shadow:0 1px 2px #0000000a;-webkit-user-select:none;user-select:none}.action-button:hover:not(:disabled){background:var(--color-bg)}.action-button:disabled{opacity:.6;cursor:not-allowed}.bubble-row.assistant+.action-buttons{max-width:620px;margin-left:auto;margin-right:auto;padding:0 .5rem}.chatpage{display:grid;grid-template-rows:auto 1fr auto;height:100dvh;width:100%;margin:0 auto;padding-top:env(safe-area-inset-top);padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right);overflow:hidden}.chatheader{display:flex;align-items:center;justify-content:center;padding:14px 18px;gap:12px;background:var(--color-header-bg);border-bottom:1px solid var(--color-border);color:var(--color-header-fg);font-weight:600;letter-spacing:.2px}.chatlogo{height:32px;width:auto}.chatheader .title{font-size:16px}.chatwindow{position:relative;padding:16px 14px 22px;display:flex;flex-direction:column;gap:10px;overflow-y:auto;scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.bubble-row{display:flex}.bubble-row.assistant{justify-content:flex-start}.bubble-row.user{justify-content:flex-end}.bubble{position:relative;max-width:var(--bubble-max);padding:10px 13px;border-radius:var(--radius-lg);line-height:1.38;word-break:break-word;white-space:pre-wrap;box-shadow:var(--shadow-soft)}.bubble-assistant{background:var(--color-assistant-bg);color:var(--color-assistant-fg);border-top-left-radius:var(--radius-sm);border-top-right-radius:var(--radius-lg);border-bottom-right-radius:var(--radius-lg);border-bottom-left-radius:var(--radius-lg)}.bubble-user{background:var(--color-user-bg);color:var(--color-user-fg);border-top-right-radius:var(--radius-sm);border-top-left-radius:var(--radius-lg);border-bottom-left-radius:var(--radius-lg);border-bottom-right-radius:var(--radius-lg)}.bubble .meta{display:block;margin-top:6px;font-size:12px;color:var(--color-muted)}.typing{display:inline-block;color:var(--color-muted);letter-spacing:2px}.chatinputbar{display:grid;grid-template-columns:1fr auto;gap:10px;padding:12px 14px;background:var(--color-panel-bg);border-top:1px solid var(--color-border);padding-bottom:calc(12px + env(safe-area-inset-bottom))}.chatinput{width:100%;padding:12px 14px;border-radius:18px;border:1px solid var(--color-border);background:#0f1115e0;background:color-mix(in oklab,var(--color-bg) 85%,#000 15%);color:var(--color-assistant-fg);outline:none;transition:border-color .16s ease,background .16s ease;font-size:16px}.chatinput::placeholder{color:var(--color-muted)}.chatinput:focus{border-color:var(--color-accent);background:var(--color-bg);border-color:color-mix(in oklab,var(--color-accent) 60%,white 40%);background:color-mix(in oklab,var(--color-bg) 75%,#000 25%)}.sendbtn{padding:10px 16px;border:none;border-radius:18px;background:var(--color-accent);color:#fff;font-weight:600;cursor:pointer;transition:transform .12s ease,background .16s ease,opacity .16s ease;-webkit-user-select:none;user-select:none}.sendbtn:hover{background:var(--color-accent-hover);transform:translateY(-1px)}.sendbtn:active{transform:translateY(0)}.sendbtn:disabled{opacity:.6;cursor:not-allowed}@media(min-width:640px){:root{--bubble-max: 68%}.chatwindow{padding:20px 18px 24px}}@media(max-width:360px){:root{--bubble-max: 82%}.bubble{font-size:16px}}@media(prefers-reduced-motion:reduce){.chatwindow{scroll-behavior:auto}.sendbtn{transition:none}}input,textarea{font-size:16px!important;-webkit-text-size-adjust:100%}