*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--header-bg:#fff;--header-text:#0a0a0a;--header-border:#00000014;--page-bg:#fff;--surface:#f5f5f5;--surface-hover:#ebebeb;--border:#0000001a;--border-strong:#0003;--text-primary:#0a0a0a;--text-secondary:#00000080;--text-tertiary:#00000059;--btn-primary-bg:#0a0a0a;--btn-primary-text:#fff;--btn-primary-hover:#1a1a1a;--btn-ghost-hover:#0000000f;--input-bg:#fff;--input-border:#00000026;--input-focus-ring:#000000e6;--chip-bg:#0000000d;--chip-hover:#0000001a;--chip-border:#0000001a;--code-bg:#0d0d0d;--code-text:#e5e5e5;--panel-header-bg:#f0f0f0;--panel-header-border:#00000014;--modal-backdrop:#00000080;--modal-bg:#fff;--modal-border:#0000001f;--modal-shadow:0 24px 64px #00000026;--scrollbar-thumb:#0003;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-mono:"SF Mono","Fira Code","Cascadia Code",Consolas,monospace}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--page-bg:#0a0a0a;--surface:#111;--surface-hover:#1a1a1a;--border:#ffffff14;--border-strong:#ffffff26;--text-primary:#fff;--text-secondary:#ffffff80;--text-tertiary:#ffffff4d;--btn-primary-bg:#fff;--btn-primary-text:#0a0a0a;--btn-primary-hover:#e5e5e5;--btn-ghost-hover:#ffffff12;--input-bg:#111;--input-border:#ffffff1f;--input-focus-ring:#ffffffe6;--chip-bg:#ffffff0d;--chip-hover:#ffffff17;--chip-border:#ffffff1a;--panel-header-bg:#0f0f0f;--panel-header-border:#ffffff0f;--modal-backdrop:#000000b3;--modal-bg:#111;--modal-border:#ffffff1a;--modal-shadow:0 24px 64px #00000080;--scrollbar-thumb:#ffffff26}}:root[data-theme=dark]{--page-bg:#0a0a0a;--surface:#111;--surface-hover:#1a1a1a;--border:#ffffff14;--border-strong:#ffffff26;--text-primary:#fff;--text-secondary:#ffffff80;--text-tertiary:#ffffff4d;--btn-primary-bg:#fff;--btn-primary-text:#0a0a0a;--btn-primary-hover:#e5e5e5;--btn-ghost-hover:#ffffff12;--input-bg:#111;--input-border:#ffffff1f;--input-focus-ring:#ffffffe6;--chip-bg:#ffffff0d;--chip-hover:#ffffff17;--chip-border:#ffffff1a;--panel-header-bg:#0f0f0f;--panel-header-border:#ffffff0f;--modal-backdrop:#000000b3;--modal-bg:#111;--modal-border:#ffffff1a;--modal-shadow:0 24px 64px #00000080;--scrollbar-thumb:#ffffff26}body{font-family:var(--font-sans);background-color:var(--page-bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .2s,color .2s}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}.app{flex-direction:column;height:100vh;display:flex}.app-body{flex:1;min-height:0;display:flex;overflow:hidden}.content-wrapper{flex-direction:column;flex:1;min-width:0;padding:32px 40px 40px;display:flex;overflow:hidden}.split-screen{flex:1;grid-template-columns:2fr 3fr;gap:16px;min-height:0;display:grid;overflow:hidden}.panel{border:1px solid var(--border);background:var(--surface);border-radius:12px;flex-direction:column;min-height:0;display:flex;overflow:hidden}.panel-header{background:var(--panel-header-bg);border-bottom:1px solid var(--panel-header-border);flex-shrink:0;justify-content:space-between;align-items:center;padding:10px 16px;display:flex}.panel-title{color:var(--text-secondary);letter-spacing:.04em;text-transform:uppercase;font-size:12px;font-weight:600}.panel-actions{align-items:center;gap:4px;display:flex}.panel-icon-btn{width:28px;height:28px;color:var(--text-tertiary);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;transition:background .15s,color .15s;display:flex}.panel-icon-btn:hover{background:var(--btn-ghost-hover);color:var(--text-primary)}.empty-state{text-align:center;color:var(--text-tertiary);flex-direction:column;justify-content:center;align-items:center;gap:8px;height:100%;padding:40px 24px;display:flex}.empty-state-icon{opacity:.3;margin-bottom:4px}.empty-state-text{font-size:13px;line-height:1.5}.prompt-section{flex-direction:column;align-items:center;gap:16px;padding:48px 0 32px;display:flex}.prompt-heading{letter-spacing:-.03em;color:var(--text-primary);text-align:center;font-size:28px;font-weight:600}.prompt-container{background:var(--input-bg);border:1px solid var(--input-border);border-radius:14px;flex-direction:column;width:100%;max-width:760px;transition:border-color .15s;display:flex;box-shadow:0 2px 12px #0000000f}.prompt-container:focus-within{border-color:var(--input-focus-ring);box-shadow:0 0 0 3px #00000014}:root[data-theme=dark] .prompt-container:focus-within{box-shadow:0 0 0 3px #ffffff14}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .prompt-container:focus-within{box-shadow:0 0 0 3px #ffffff14}}.prompt-textarea{resize:none;width:100%;font-family:var(--font-sans);color:var(--text-primary);background:0 0;border:none;outline:none;min-height:64px;max-height:240px;padding:16px 16px 0;font-size:15px;line-height:1.5;overflow-y:auto}.prompt-textarea::placeholder{color:var(--text-tertiary)}.prompt-textarea:disabled{opacity:.4;cursor:not-allowed}.prompt-actions{justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;display:flex}.model-select{background:var(--chip-bg);border:1px solid var(--chip-border);color:var(--text-secondary);font-family:var(--font-sans);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23999' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");background-position:right 8px center;background-repeat:no-repeat;border-radius:8px;outline:none;padding:5px 24px 5px 8px;font-size:12px;font-weight:500;transition:border-color .15s}.model-select:focus{border-color:var(--border-strong)}.model-select:disabled{opacity:.4;cursor:not-allowed}.send-btn{background:var(--btn-primary-bg);color:var(--btn-primary-text);font-family:var(--font-sans);cursor:pointer;border:none;border-radius:8px;flex-shrink:0;align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:500;transition:background .15s,opacity .15s;display:flex}.send-btn:hover:not(:disabled){background:var(--btn-primary-hover)}.send-btn:disabled{opacity:.35;cursor:not-allowed}.stop-btn{color:var(--text-secondary);border:1px solid var(--border-strong);font-family:var(--font-sans);cursor:pointer;background:0 0;border-radius:8px;flex-shrink:0;align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:500;transition:background .15s,color .15s,border-color .15s;display:flex}.stop-btn:hover{background:var(--btn-ghost-hover);color:var(--text-primary);border-color:var(--text-primary)}.chips-row{flex-wrap:wrap;justify-content:center;gap:8px;width:100%;max-width:760px;display:flex}.chip{background:var(--chip-bg);border:1px solid var(--chip-border);color:var(--text-secondary);font-family:var(--font-sans);cursor:pointer;white-space:nowrap;border-radius:20px;padding:6px 14px;font-size:13px;transition:background .15s,color .15s,border-color .15s,transform .1s}.chip:hover{background:var(--chip-hover);color:var(--text-primary);border-color:var(--border-strong);transform:translateY(-1px)}.chip:disabled{opacity:.4;cursor:not-allowed;transform:none}.error-banner{color:#f87171;background:#f871711a;border:1px solid #f8717133;border-radius:8px;margin:0 0 16px;padding:12px 16px;font-size:13px;line-height:1.5}@media (max-width:768px){.app{height:100dvh;overflow:hidden}.app-body{flex-direction:column;overflow:hidden auto}.content-wrapper{flex:none;padding:20px 16px 40px;overflow:visible}.split-screen{flex-direction:column;gap:12px;min-height:0;display:flex;overflow:visible}.panel{flex-shrink:0;height:380px}.prompt-section{gap:12px;padding:24px 0 20px}.prompt-heading{font-size:20px}.chips-row{gap:6px}.chip{padding:5px 12px;font-size:12px}}