:root{--bg:#fff;--surface:#fafafa;--border:#e5e7eb;--border-strong:#d1d5db;--text:#1a1a2e;--text-muted:#6b7280;--text-faint:#9ca3af;--accent:#1a1a2e;--accent-fg:#fff;--success:#10b981;--success-bg:#d1fae5;--warning:#f59e0b;--warning-bg:#fef3c7;--error:#ef4444;--error-bg:#fee2e2;--info:#3b82f6;--info-bg:#dbeafe;--neutral-bg:#f3f4f6;--radius:8px;--radius-lg:12px;--shadow-sm:0 1px 2px #0000000a;--shadow-md:0 4px 12px #0000000f;--font-sans:system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:var(--font-sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.55}*{box-sizing:border-box}body{min-height:100vh;margin:0}#root{flex-direction:column;min-height:100vh;display:flex}h1,h2,h3,h4{color:var(--text);letter-spacing:-.01em;margin:0;font-weight:600}h1{font-size:1.5rem}h2{font-size:1.25rem}h3{font-size:1rem}p{margin:0}button{font:inherit;cursor:pointer;color:inherit;background:0 0;border:none}input,textarea{font:inherit;color:inherit}a{color:var(--text);text-decoration:none}.nav{border-bottom:1px solid var(--border);background:var(--bg);justify-content:space-between;align-items:center;padding:16px 32px;display:flex}.nav-brand{align-items:center;gap:10px;font-size:1.1rem;font-weight:600;display:flex}.nav-links{gap:8px;display:flex}.nav-link{border-radius:var(--radius);color:var(--text-muted);padding:8px 14px;font-size:.9rem;font-weight:500;transition:background .1s,color .1s}.nav-link:hover,.nav-link.active{background:var(--neutral-bg);color:var(--text)}.main{flex:1;justify-content:center;align-items:flex-start;padding:48px 32px;display:flex}.container{width:100%;max-width:720px}.container-wide{width:100%;max-width:960px}.generator{flex-direction:column;gap:20px;display:flex}.generator-title{margin-bottom:4px;font-size:1.75rem}.generator-sub{color:var(--text-muted);margin-bottom:16px}.tabs{background:var(--neutral-bg);border-radius:var(--radius);width:fit-content;margin-bottom:8px;padding:3px;display:inline-flex}.tab{color:var(--text-muted);border-radius:6px;padding:8px 16px;font-size:.875rem;font-weight:500;transition:background .1s,color .1s}.tab.active{background:var(--bg);color:var(--text);box-shadow:var(--shadow-sm)}.topic-input{border:1px solid var(--border-strong);border-radius:var(--radius-lg);background:var(--bg);resize:vertical;width:100%;min-height:120px;font-size:1.0625rem;font-family:var(--font-sans);outline:none;padding:14px 18px;transition:border-color .1s}.topic-input:focus{border-color:var(--text)}.pdf-drop{border:2px dashed var(--border-strong);border-radius:var(--radius-lg);width:100%;min-height:160px;color:var(--text-muted);cursor:pointer;background:var(--surface);flex-direction:column;justify-content:center;align-items:center;gap:8px;font-size:.9rem;transition:border-color .1s,background .1s;display:flex}.pdf-drop:hover{border-color:var(--text);background:var(--bg)}.pdf-drop.has-file{border-style:solid;border-color:var(--text);color:var(--text);background:var(--bg)}.pdf-file-name{color:var(--text);font-weight:500}.btn-primary{background:var(--accent);color:var(--accent-fg);border-radius:var(--radius);align-items:center;gap:8px;width:fit-content;padding:12px 24px;font-size:.95rem;font-weight:500;transition:opacity .1s,transform 50ms;display:inline-flex}.btn-primary:hover:not(:disabled){opacity:.85}.btn-primary:active:not(:disabled){transform:translateY(1px)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{border-radius:var(--radius);color:var(--text);border:1px solid var(--border-strong);align-items:center;gap:8px;padding:10px 18px;font-size:.9rem;font-weight:500;transition:background .1s;display:inline-flex}.btn-ghost:hover{background:var(--neutral-bg)}.error-banner{background:var(--error-bg);color:var(--error);border-radius:var(--radius);padding:12px 16px;font-size:.9rem}.progress{flex-direction:column;align-items:center;gap:32px;display:flex}.job-id{font-family:var(--font-mono);color:var(--text-faint);font-size:.8rem}.elapsed{font-family:var(--font-mono);color:var(--text-muted);font-size:.875rem}.stepper{align-items:flex-start;width:100%;max-width:640px;display:flex;position:relative}.step{flex-direction:column;flex:1;align-items:center;gap:8px;display:flex;position:relative}.step:not(:last-child):after{content:"";background:var(--border);z-index:0;height:2px;position:absolute;top:11px;left:calc(50% + 14px);right:calc(14px - 50%)}.step.complete:not(:last-child):after{background:var(--text)}.step-dot{background:var(--bg);border:2px solid var(--border-strong);z-index:1;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;transition:background .2s,border-color .2s;display:flex;position:relative}.step.complete .step-dot{background:var(--text);border-color:var(--text);color:var(--accent-fg)}.step.current .step-dot{border-color:var(--text);background:var(--bg)}.step.current .step-dot:after{content:"";background:var(--text);border-radius:50%;width:10px;height:10px;animation:1.4s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:.4;transform:scale(.9)}50%{opacity:1;transform:scale(1.1)}}.step-label{color:var(--text-faint);text-align:center;font-size:.8rem;font-weight:500}.step.complete .step-label,.step.current .step-label{color:var(--text)}.failure-card{border:1px solid var(--error);background:var(--error-bg);border-radius:var(--radius-lg);flex-direction:column;gap:12px;width:100%;padding:20px;display:flex}.result{flex-direction:column;gap:20px;display:flex}.result-video{border-radius:var(--radius-lg);background:#000;width:100%;display:block}.result-meta{border-top:1px solid var(--border);border-bottom:1px solid var(--border);flex-wrap:wrap;gap:16px 32px;padding:16px 0;display:flex}.result-meta-item{flex-direction:column;gap:2px;display:flex}.result-meta-label{color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem}.result-meta-value{font-size:.95rem;font-weight:500}.result-actions{gap:12px;display:flex}.history-empty{text-align:center;color:var(--text-muted);padding:48px 0}.history-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.history-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg);text-align:left;flex-direction:column;gap:10px;padding:16px;transition:border-color .1s,box-shadow .1s;display:flex}.history-card.clickable{cursor:pointer}.history-card.clickable:hover{border-color:var(--text);box-shadow:var(--shadow-md)}.history-card-topic{-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;font-size:.95rem;font-weight:500;display:-webkit-box;overflow:hidden}.history-card-meta{color:var(--text-faint);justify-content:space-between;align-items:center;margin-top:auto;font-size:.8rem;display:flex}.badge{text-transform:capitalize;border-radius:999px;align-items:center;gap:4px;padding:3px 8px;font-size:.75rem;font-weight:500;display:inline-flex}.badge-done{background:var(--success-bg);color:var(--success)}.badge-failed{background:var(--error-bg);color:var(--error)}.badge-running{background:var(--info-bg);color:var(--info)}.badge-queued{background:var(--neutral-bg);color:var(--text-muted)}.loader{animation:1s linear infinite spin;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}