:root{--primary:#6c5ce7;--primary-light:#a29bfe;--primary-dark:#5a4bd1;--accent:#00cec9;--accent-light:#81ecec;--success:#00b894;--danger:#e17055;--warning:#fdcb6e;--bg:#f8f9ff;--bg-card:#ffffff;--bg-dark:#2d3436;--text:#2d3436;--text-light:#636e72;--text-muted:#b2bec3;--border:#dfe6e9;--radius:16px;--radius-sm:10px;--shadow:0 4px 20px rgba(108,92,231,0.1);--shadow-lg:0 8px 40px rgba(108,92,231,0.15);--font:"Segoe UI",system-ui,-apple-system,sans-serif;--nav-height:56px}*{box-sizing:border-box;margin:0;padding:0}body,html{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:var(--primary);text-decoration:none}button{font-family:var(--font);cursor:pointer;border:none;outline:none}.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:var(--radius);font-size:1.05rem;font-weight:600;transition:all .2s ease}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:white;box-shadow:0 4px 15px rgba(108,92,231,.3)}.btn-primary:hover{box-shadow:0 6px 25px rgba(108,92,231,.4)}.btn-accent{background:linear-gradient(135deg,var(--accent),#00b5b1);color:white;box-shadow:0 4px 15px rgba(0,206,201,.3)}.btn-secondary{background:var(--bg-card);color:var(--text);border:2px solid var(--border)}.btn-secondary:hover{border-color:var(--primary-light);background:#f0eeff}.btn-danger{background:var(--danger);color:white}.btn-sm{padding:8px 16px;font-size:.9rem;border-radius:var(--radius-sm)}.btn-lg{padding:18px 36px;font-size:1.2rem;border-radius:20px}.card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);transition:all .2s ease}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}.nav{gap:16px;padding:12px 24px;background:white;border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:50;height:var(--nav-height)}.nav,.nav-brand{display:flex;align-items:center}.nav-brand{font-size:1.3rem;font-weight:700;color:var(--primary);gap:8px}.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;padding:4px 8px;margin-left:auto;color:var(--text)}.nav-links{display:flex;gap:8px;margin-left:auto}.nav-link{padding:8px 16px;border-radius:var(--radius-sm);font-weight:500;color:var(--text-light);transition:all .2s}.nav-link:hover{background:#f0eeff;color:var(--primary)}.nav-link.active{background:var(--primary);color:white}.nav.ai-active{position:relative}.nav.ai-active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--primary),var(--accent));background-size:200% 100%;animation:ai-glow 3s ease-in-out infinite}@keyframes ai-glow{0%,to{background-position:0 50%}50%{background-position:100% 50%}}@media (prefers-reduced-motion:reduce){.nav.ai-active:after{animation:none;background:var(--accent)}}.chat-header.ai-active{position:relative}.chat-header.ai-active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--primary),var(--accent));background-size:200% 100%;animation:ai-glow 3s ease-in-out infinite}@media (prefers-reduced-motion:reduce){.chat-header.ai-active:after{animation:none;background:var(--accent)}}.page-container{max-width:1200px;margin:0 auto;padding:24px}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .2s ease}.modal{background:white;border-radius:var(--radius);padding:32px;max-width:400px;width:90%;box-shadow:var(--shadow-lg);animation:slideUp .3s ease}.modal h3{margin-bottom:12px}.modal p{color:var(--text-light);margin-bottom:24px}.modal-actions{display:flex;gap:12px;justify-content:flex-end}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes micPulse{0%,to{box-shadow:0 0 0 0 rgba(255,68,68,.4)}50%{box-shadow:0 0 0 8px rgba(255,68,68,0)}}.saved-indicator{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:#e8f5e9;color:var(--success);border-radius:20px;font-size:.85rem;font-weight:500}@media (max-width:768px){.nav{padding:10px 16px}.nav-brand{font-size:1.1rem}.nav-toggle{display:block}.nav-links{display:none;position:absolute;top:100%;right:12px;background:white;border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px;box-shadow:var(--shadow-lg);flex-direction:column;min-width:160px;z-index:60}.nav-links.open{display:flex}.page-container{padding:16px}.btn-lg{padding:14px 24px;font-size:1rem}}