:root{--primary: #7c3aed;--primary-light: #a78bfa;--accent: #f59e0b;--success: #10b981;--surface: #1e1b4b;--bg-start: #0f0a2e;--bg-end: #1e1b4b;--text: #e2e8f0;--text-muted: #94a3b8;--border: #334155;--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:linear-gradient(135deg,var(--bg-start),var(--bg-end));color:var(--text);min-height:100vh;overflow-x:hidden}.app-container{position:relative;min-height:100vh;padding:20px;max-width:1200px;margin:0 auto}.background-glow{position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 50% 50%,rgba(124,58,237,.08) 0%,transparent 60%);pointer-events:none;z-index:0}.particles{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;background-image:radial-gradient(circle at 10% 20%,rgba(167,139,250,.15) 0%,transparent 50%),radial-gradient(circle at 80% 40%,rgba(16,185,129,.1) 0%,transparent 50%),radial-gradient(circle 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rotate(10deg)}}.start-page{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:30px;padding-top:40px}.hero{text-align:center}.hero-icon{margin-bottom:16px}.app-title{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-light),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:inline-flex;align-items:center;gap:8px}.cloud-badge{-webkit-text-fill-color:var(--text-muted)}.cloud-text{font-size:.9rem;color:var(--text-muted);background:#ffffff0d;padding:2px 10px;border-radius:12px;-webkit-text-fill-color:var(--text-muted);font-weight:400}.app-subtitle{color:var(--text-muted);max-width:500px;margin:12px auto 0;font-size:.95rem;line-height:1.5}.stats-bar{display:flex;gap:20px;justify-content:center;margin-top:16px;flex-wrap:wrap}.stat{display:flex;align-items:center;gap:6px;background:#ffffff0d;padding:6px 14px;border-radius:20px;font-size:.85rem;color:var(--text-muted)}.upload-area{background:var(--surface);border:2px dashed var(--border);border-radius:var(--radius);padding:40px;text-align:center;cursor:pointer;transition:all .3s;min-width:320px;box-shadow:0 0 20px #7c3aed26,0 0 40px #7c3aed0d}.upload-area:hover{border-color:var(--primary);box-shadow:0 0 30px #7c3aed40,0 0 60px #7c3aed1a}.upload-area p{margin-top:12px;color:var(--text);font-weight:500}.upload-area .hint{color:var(--text-muted);font-size:.85rem;font-weight:400}.sample-section{width:100%}.sample-section h3{display:flex;align-items:center;gap:6px;margin-bottom:16px;color:var(--text-muted);font-weight:500}.sample-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}.sample-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;cursor:pointer;border:1px solid var(--border);transition:border-color 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