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none}body{margin:0;min-height:100vh;background:var(--c-bg);background-image:var(--c-bg-pattern);background-size:cover;color:var(--c-text);font-family:var(--font-body);transition:background .6s ease,color .6s ease}*{box-sizing:border-box}#root{min-height:100vh}body[data-theme=chatgpt]{--font-body: "Manrope", sans-serif;--c-bg: #f3f4f6;--c-chat: #f7f7f8;--c-sidebar: #1f2937;--c-panel: #ffffff;--c-topbar: rgba(255, 255, 255, .8);--c-input: #ffffff;--c-text: #111827;--c-muted: #6b7280;--c-sidebar-text: #f8fafc;--c-border: #e5e7eb;--c-user: #e5e7eb;--c-user-text: #111827;--c-user-text-muted: rgba(17, 24, 39, .6);--c-ai: #ffffff;--c-accent: #111827;--c-accent-contrast: #ffffff;--c-accent-glow: rgba(17, 24, 39, .4);--c-pill: #f1f5f9;--shadow-soft: 0 12px 30px rgba(15, 23, 42, .08);--shadow-card: 0 10px 26px rgba(15, 23, 42, .08);--c-bg-pattern: radial-gradient(circle at 10% 10%, rgba(17, 24, 39, .04), transparent 55%), radial-gradient(circle at 90% 20%, rgba(17, 24, 39, .04), transparent 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transparent 55%);--c-chat-pattern: linear-gradient(180deg, rgba(255, 255, 255, .35), rgba(255, 255, 255, .2))}body[data-theme=miku]{--font-body: "Orbitron", sans-serif;--c-bg: linear-gradient(160deg, #d8fff4, #c8f7ff, #dff6ff);--c-chat: rgba(255, 255, 255, .4);--c-sidebar: linear-gradient(180deg, rgba(57, 230, 193, .7), rgba(0, 184, 217, .7));--c-panel: rgba(255, 255, 255, .8);--c-topbar: rgba(255, 255, 255, .6);--c-input: rgba(255, 255, 255, .7);--c-text: #0f172a;--c-muted: rgba(15, 23, 42, .6);--c-sidebar-text: #0f172a;--c-border: rgba(57, 230, 193, .45);--c-user: rgba(57, 230, 193, .9);--c-user-text: #0f172a;--c-user-text-muted: rgba(15, 23, 42, .6);--c-ai: rgba(255, 255, 255, .8);--c-accent: #00b8d9;--c-accent-contrast: #001f2d;--c-accent-glow: rgba(57, 230, 193, .7);--c-pill: rgba(255, 255, 255, .65);--shadow-soft: 0 18px 40px rgba(0, 24, 38, .18);--shadow-card: 0 18px 40px rgba(0, 24, 38, .16);--c-bg-pattern: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' 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