@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--primary-color:#2563eb;--primary-hover:#1d4ed8;--bg-color:#f8fafc;--text-color:#1e293b;--border-color:#e2e8f0;--card-bg:#fff}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);-webkit-font-smoothing:antialiased;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5}nav{background:var(--card-bg);z-index:50;padding:1rem 2rem;position:sticky;top:0;box-shadow:0 1px 3px #0000000d}nav ul{align-items:center;gap:1.5rem;max-width:1200px;margin:0 auto;list-style:none;display:flex}nav a{color:var(--text-color);font-weight:500;text-decoration:none;transition:color .2s}nav a:hover{color:var(--primary-color)}.container{max-width:1200px;margin:2rem auto;padding:0 1rem}.card{background:var(--card-bg);border-radius:8px;margin-bottom:2rem;padding:2rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}button,.btn{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.5rem 1rem;font-weight:500;text-decoration:none;transition:background-color .2s;display:inline-block}button:hover,.btn:hover{background-color:var(--primary-hover)}input,textarea{border:1px solid var(--border-color);border-radius:4px;width:100%;margin-bottom:1rem;padding:.5rem;font-family:inherit}@media (width<=768px){nav ul{flex-wrap:wrap;justify-content:center}}.ai-chat-container{flex-direction:column;height:100%;display:flex}.chat-history{border:1px solid var(--border-color);background:#f8fafc;border-radius:6px;flex-direction:column;flex:1;gap:.75rem;max-height:400px;margin-bottom:1rem;padding:1rem;display:flex;overflow-y:auto}.chat-message{border-radius:8px;max-width:85%;padding:.75rem 1rem;font-size:.95rem;line-height:1.4}.chat-message.user{background:var(--primary-color);color:#fff;border-bottom-right-radius:0;align-self:flex-end}.chat-message.ai{color:var(--text-color);border:1px solid var(--border-color);background:#fff;border-bottom-left-radius:0;align-self:flex-start}.chat-input-area{gap:.5rem;display:flex}.chat-input-area input{margin-bottom:0}