@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary:#0a0a12;--bg-secondary:#12121f;--bg-card:#1a1a2e;--bg-input:#16162a;--purple-primary:#8b5cf6;--purple-secondary:#a78bfa;--purple-glow:rgba(139,92,246,.3);--text-primary:#f0f0f5;--text-secondary:#9ca3af;--text-muted:#6b7280;--border:#2a2a40;--success:#34d399;--warning:#fbbf24;--danger:#f87171}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column}.container{max-width:800px;margin:0 auto;padding:0 20px;width:100%}header{padding:32px 0 24px;text-align:center;border-bottom:1px solid var(--border)}header h1{font-size:2rem;font-weight:800;background:linear-gradient(135deg,var(--purple-primary),var(--purple-secondary),#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}header .subtitle{color:var(--text-muted);font-size:.875rem;margin-top:4px}main{flex:1 1;padding:32px 0}.input-section{margin-bottom:24px}textarea{width:100%;min-height:200px;padding:16px;background:var(--bg-input);border:1px solid var(--border);border-radius:12px;color:var(--text-primary);font-family:inherit;font-size:.95rem;line-height:1.6;resize:vertical;transition:border-color .2s}textarea:focus{outline:none;border-color:var(--purple-primary);box-shadow:0 0 0 3px var(--purple-glow)}textarea::placeholder{color:var(--text-muted)}.input-footer{display:flex;justify-content:space-between;align-items:center;margin-top:12px}.char-count{color:var(--text-muted);font-size:.8rem}.analyze-btn{padding:12px 32px;background:linear-gradient(135deg,var(--purple-primary),#7c3aed);color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit}.analyze-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 20px var(--purple-glow)}.analyze-btn:disabled{opacity:.5;cursor:not-allowed}.loading{text-align:center;padding:48px 0}.spinner{width:48px;height:48px;border:3px solid var(--border);border-top-color:var(--purple-primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(1turn)}}.loading p{color:var(--text-secondary)}.results{animation:fadeIn .4s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.verdict-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:32px;text-align:center;margin-bottom:24px}.gauge-container{position:relative;width:200px;height:120px;margin:0 auto 20px;overflow:hidden}.gauge-bg,.gauge-fill{position:absolute;top:0;left:0;width:200px;height:200px;border-radius:50%;border:16px solid transparent}.gauge-bg{border-top-color:var(--border);border-left-color:var(--border);border-right-color:var(--border);transform:rotate(0deg)}.gauge-fill{border-top-color:var(--purple-primary);border-left-color:var(--purple-primary);border-right-color:var(--purple-primary);-webkit-clip-path:polygon(0 0,100% 0,100% 50%,0 50%);clip-path:polygon(0 0,100% 0,100% 50%,0 50%);transition:transform 1s ease}.gauge-score{position:absolute;bottom:0;left:50%;transform:translateX(-50%);font-size:2.5rem;font-weight:800}.gauge-label{font-size:.8rem;color:var(--text-muted)}.verdict-text{font-size:1.5rem;font-weight:700;margin-top:8px}.verdict-human{color:var(--success)}.verdict-likely-human{color:#86efac}.verdict-mixed{color:var(--warning)}.verdict-likely-ai{color:#fb923c}.verdict-ai{color:var(--danger)}.breakdown-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:24px;margin-bottom:24px}.breakdown-card h3{font-size:1rem;font-weight:600;margin-bottom:20px;color:var(--text-secondary)}.breakdown-item{margin-bottom:16px}.breakdown-item:last-child{margin-bottom:0}.breakdown-label{display:flex;justify-content:space-between;margin-bottom:6px;font-size:.875rem}.breakdown-label span:first-child{color:var(--text-primary)}.breakdown-label span:last-child{color:var(--text-secondary);font-weight:600}.bar-bg{height:8px;background:var(--bg-primary);border-radius:4px;overflow:hidden}.bar-fill{height:100%;border-radius:4px;transition:width 1s ease}.bar-low{background:var(--success)}.bar-medium{background:var(--warning)}.bar-high{background:var(--danger)}.tips-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:24px;margin-bottom:24px}.tips-card h3{font-size:1rem;font-weight:600;margin-bottom:16px;color:var(--warning)}.tips-card ul{list-style:none;padding:0}.tips-card li{padding:8px 0 8px 24px;position:relative;color:var(--text-secondary);font-size:.9rem;line-height:1.5}.tips-card li:before{content:"💡";position:absolute;left:0}.cta-banner{display:block;text-align:center;padding:16px 24px;background:linear-gradient(135deg,rgba(139,92,246,.1),rgba(168,85,247,.1));border:1px solid rgba(139,92,246,.3);border-radius:12px;color:var(--purple-secondary);text-decoration:none;font-size:.9rem;font-weight:500;transition:all .2s;margin-bottom:24px}.cta-banner:hover{background:linear-gradient(135deg,rgba(139,92,246,.2),rgba(168,85,247,.2));transform:translateY(-1px)}.error-msg{background:hsla(0,91%,71%,.1);border:1px solid hsla(0,91%,71%,.3);border-radius:12px;padding:16px;color:var(--danger);text-align:center;margin-bottom:24px}footer{padding:24px 0;border-top:1px solid var(--border);text-align:center}.footer-links{display:flex;justify-content:center;gap:24px;flex-wrap:wrap}.footer-links a{color:var(--text-muted);text-decoration:none;font-size:.8rem;transition:color .2s}.footer-links a:hover{color:var(--purple-secondary)}.footer-copy{color:var(--text-muted);font-size:.75rem;margin-top:12px}@media (max-width:600px){header h1{font-size:1.5rem}.verdict-card{padding:24px 16px}.gauge-score{font-size:2rem}textarea{min-height:150px}}