*{box-sizing:border-box;font-family:Poppins,sans-serif}:root{--bg-gradient:linear-gradient(135deg,#0f172a,#1e293b 50%,#8d9fa7);--accent:#dbddde;--accent-dark:#2a86b4;--bubble-bg:rgba(255,255,255,0.08);--text-light:#f8fafc;--muted:#b1b4b7}body{margin:0;background:var(--bg-gradient);color:var(--text-light);overflow-x:hidden}.fitness-app,body{min-height:100vh;display:flex;flex-direction:column}.hero{position:relative;text-align:center;padding:6rem 1rem 3rem;background:url(/assets/fitness-bg.jpg) 50%/cover no-repeat}.hero:before{content:"";position:absolute;inset:0;background:rgba(15,23,42,.85);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.hero-content{position:relative;z-index:2}.hero-logo{filter:drop-shadow(0 0 12px var(--accent));margin-bottom:1rem}.hero h1{font-size:2.8rem;font-weight:700;color:var(--accent)}.hero p{font-size:1.2rem;color:var(--muted);max-width:500px;margin:1rem auto}.chat-section{flex:1 1;padding:2rem;overflow-y:auto;display:flex;flex-direction:column;gap:1rem}.starter-text{text-align:center;font-size:1.3rem;color:var(--muted);margin-bottom:1.5rem}.bubble{padding:1rem 1.5rem;border-radius:25px;max-width:80%;animation:fadeUp .3s ease}.bubble.user{align-self:flex-end;background:var(--accent);color:#0f172a}.add-section{text-align:center}.bubble.assistant{align-self:flex-start;background:var(--bubble-bg);border:1px solid rgba(255,255,255,.1)}.chat-input-form{display:flex;padding:1rem 2rem;gap:1rem;border-top:1px solid rgba(255,255,255,.1);background:rgba(30,32,39,.85);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.chat-input{flex:1 1;border:none;background:rgba(255,255,255,.1);color:var(--text-light);border-radius:30px;padding:1rem 1.5rem;font-size:1rem;transition:.3s}.chat-input:focus{outline:none;box-shadow:0 0 10px var(--accent)}.send-btn{background:var(--accent);color:#0f172a;border:none;border-radius:30px;padding:1rem 2rem;cursor:pointer;font-weight:600;transition:.3s}.send-btn:hover{background:var(--accent-dark)}.loader{margin:auto;width:50px;height:10px;border-radius:10px;background:var(--accent);animation:pulse 1s ease-in-out infinite}.prompt-suggestion-row{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.prompt-suggestion-button{border:2px solid var(--accent);color:var(--accent);background:transparent;padding:.8rem 1.2rem;border-radius:25px;cursor:pointer;transition:.3s}.prompt-suggestion-button:hover{background:var(--accent);color:#0f172a;box-shadow:0 0 12px var(--accent)}@keyframes fadeUp{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:.5;transform:scaleX(.8)}50%{opacity:1;transform:scaleX(1)}}@media (max-width:768px){.hero h1{font-size:2.2rem}.chat-section{padding:1rem}.chat-input-form{padding:1rem;flex-direction:column}.send-btn{width:100%}}