body{margin:0;padding:0;font-family:Raleway,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:#333}*{box-sizing:border-box}a{color:inherit;text-decoration:none}button{font-family:inherit}:root{--primary:#667eea;--secondary:#764ba2;--accent:#f093fb;--text-dark:#2d3748;--text-light:#ffffff;--bg-light:#ffffff;--bg-dark:#1a202c;--shadow:0 10px 40px rgba(0,0,0,0.1)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.nav{background:rgba(255,255,255,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow);position:-webkit-sticky;position:sticky;top:0;z-index:100}.nav-content{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;max-width:1200px;margin:0 auto}.nav-logo{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;gap:2rem;list-style:none;margin:0;padding:0}.nav-link{color:var(--text-dark);font-weight:500;transition:color .3s}.nav-link:hover{color:var(--primary)}.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--text-light);padding:2rem}.hero-content h1{font-size:4rem;margin-bottom:1rem;font-weight:700;text-shadow:0 2px 10px rgba(0,0,0,.2)}.hero-content p{font-size:1.5rem;margin-bottom:2rem;opacity:.9}.btn{display:inline-block;padding:1rem 2rem;background:white;color:var(--primary);border-radius:50px;font-weight:600;transition:transform .3s,box-shadow .3s;cursor:pointer;border:none;font-size:1rem}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(0,0,0,.2)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:white}.section{padding:5rem 2rem;background:white}.section-dark{background:var(--bg-dark);color:var(--text-light)}.section-title{text-align:center;font-size:2.5rem;margin-bottom:3rem;font-weight:700}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:2rem;gap:2rem}.card{background:white;border-radius:15px;padding:2rem;box-shadow:var(--shadow);transition:transform .3s}.card:hover{transform:translateY(-5px)}.card-image{width:100%;height:200px;object-fit:cover;border-radius:10px;margin-bottom:1rem}.card-title{font-size:1.5rem;margin-bottom:1rem;font-weight:600}.card-content{color:#666;line-height:1.6}.form-group{margin-bottom:1.5rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-dark)}.form-input,.form-select,.form-textarea{width:100%;padding:.75rem;border:2px solid #e2e8f0;border-radius:8px;font-size:1rem;transition:border-color .3s}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary)}.form-textarea{min-height:120px;resize:vertical}.chat-container{background:white;border-radius:15px;box-shadow:var(--shadow);overflow:hidden;height:600px;display:flex;flex-direction:column}.chat-messages{flex:1 1;overflow-y:auto;padding:1.5rem;background:#f7fafc}.chat-message{background:white;padding:1rem;border-radius:10px;margin-bottom:1rem;box-shadow:0 2px 5px rgba(0,0,0,.05)}.chat-message-author{font-weight:600;color:var(--primary);margin-bottom:.5rem}.chat-message-time{font-size:.75rem;color:#999}.chat-input-container{padding:1rem;background:white;border-top:1px solid #e2e8f0;display:flex;gap:1rem}.chat-input{flex:1 1;padding:.75rem;border:2px solid #e2e8f0;border-radius:25px;font-size:1rem}.timeline{position:relative;padding-left:3rem}.timeline:before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--primary),var(--secondary))}.timeline-item{position:relative;margin-bottom:2rem}.timeline-item:before{content:"";position:absolute;left:-3.5rem;top:0;width:16px;height:16px;border-radius:50%;background:var(--primary);border:3px solid white;box-shadow:0 0 0 3px var(--primary)}.timeline-date{color:var(--primary)}.timeline-date,.timeline-title{font-weight:600;margin-bottom:.5rem}.timeline-title{font-size:1.25rem}.post-actions{display:flex;gap:1rem;margin-top:1rem;padding-top:1rem;border-top:1px solid #e2e8f0}.action-btn{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:none;background:#f7fafc;border-radius:20px;cursor:pointer;transition:all .3s;font-size:.9rem}.action-btn:hover{background:#e2e8f0}.action-btn.liked{background:#fee;color:#e53e3e}.comments-section{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid #e2e8f0}.comment{background:#f7fafc;padding:1rem;border-radius:8px;margin-bottom:.75rem}.comment-author{font-weight:600;color:var(--primary);margin-bottom:.5rem}.comment-time{font-size:.75rem;color:#999}.loading{display:inline-block;width:20px;height:20px;border:3px solid #f3f3f3;border-top:3px solid var(--primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@media (max-width:768px){.hero-content h1{font-size:2.5rem}.nav-links{gap:1rem;font-size:.9rem}.grid{grid-template-columns:1fr}}