:root{--primary-gradient: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);--background: #fafafa;--surface: #ffffff;--text-primary: #262626;--text-secondary: #8e8e8e;--accent: #0095f6;--border: #dbdbdb;--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(255, 255, 255, .3)}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--background);color:var(--text-primary)}*{box-sizing:border-box}.auth-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:var(--primary-gradient)}.auth-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:40px;border-radius:12px;box-shadow:0 8px 32px #1f26875e;border:1px solid var(--glass-border);width:100%;max-width:350px;text-align:center}.auth-card h1{font-family:Dancing Script,cursive;font-size:3rem;margin-bottom:20px}.input-group{margin-bottom:15px}.input-group input{width:100%;padding:12px;border:1px solid var(--border);border-radius:4px;background:#fafafa;font-size:14px}.btn-primary{width:100%;padding:10px;border:none;border-radius:4px;background:var(--accent);color:#fff;font-weight:600;cursor:pointer;transition:opacity .2s}.btn-primary:hover{opacity:.8}.navbar{position:sticky;top:0;background:var(--surface);border-bottom:1px solid var(--border);padding:10px 20px;display:flex;justify-content:space-between;align-items:center;z-index:100}.navbar h1{font-family:Dancing Script,cursive;font-size:1.5rem;margin:0;cursor:pointer}.nav-links{display:flex;gap:20px}.nav-links svg{width:24px;height:24px;cursor:pointer}.feed-container{max-width:600px;margin:20px auto;padding:0 20px}.post-card{background:var(--surface);border:1px solid var(--border);margin-bottom:24px;border-radius:8px;overflow:hidden}.post-header{padding:12px;display:flex;align-items:center;gap:12px}.post-header .username{font-weight:600}.post-image{width:100%;aspect-ratio:1;object-fit:cover}.post-actions{padding:8px 12px;display:flex;gap:16px}.post-actions svg{cursor:pointer;transition:transform .1s}.post-actions svg:hover{transform:scale(1.1)}.post-info{padding:0 12px 12px}.likes-count{font-weight:600;margin-bottom:6px;display:block}.caption{margin-bottom:6px}.caption .username{font-weight:600;margin-right:8px}.comments-list{margin-top:8px}.comment{margin-bottom:4px;font-size:14px}.comment .username{font-weight:600;margin-right:6px}.comment-input-container{border-top:1px solid var(--border);padding:12px;display:flex;gap:12px}.comment-input-container input{flex:1;border:none;outline:none;font-size:14px}.comment-input-container button{background:none;border:none;color:var(--accent);font-weight:600;cursor:pointer}.create-post-modal{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.create-post-card{background:var(--surface);padding:24px;border-radius:12px;width:100%;max-width:400px}.chat-container{position:fixed;bottom:0;right:20px;width:300px;background:var(--surface);border:1px solid var(--border);border-radius:12px 12px 0 0;box-shadow:0 -4px 12px #0000001a;z-index:1000;display:flex;flex-direction:column}.chat-header{padding:12px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;cursor:pointer;background:var(--primary-gradient);color:#fff;border-radius:12px 12px 0 0}.chat-header h3{margin:0;font-size:14px}.notification-badge{background:#ff3b30;color:#fff;font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 5px}.user-list{max-height:300px;overflow-y:auto}.user-item{padding:10px 12px;display:flex;align-items:center;gap:10px;cursor:pointer;transition:background .2s}.user-item:hover{background:#f0f0f0}.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary-gradient)}.active-chat-window{position:absolute;bottom:0;right:320px;width:300px;height:400px;background:var(--surface);border:1px solid var(--border);border-radius:12px 12px 0 0;box-shadow:0 -4px 12px #0000001a;display:flex;flex-direction:column}.messages-area{flex:1;padding:12px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.message-bubble{max-width:80%;padding:8px 12px;border-radius:18px;font-size:14px}.message-sent{align-self:flex-end;background:var(--accent);color:#fff}.message-received{align-self:flex-start;background:#efefef;color:var(--text-primary)}.chat-input{padding:12px;border-top:1px solid var(--border);display:flex;gap:8px}.chat-input input{flex:1;border:1px solid var(--border);border-radius:20px;padding:8px 12px;font-size:14px}.chat-input button{background:none;border:none;color:var(--accent);font-weight:600;cursor:pointer}.toast-container{position:fixed;top:20px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:10px}.toast{background:var(--surface);color:var(--text-primary);padding:12px 24px;border-radius:8px;box-shadow:0 4px 12px #00000026;border-left:4px solid var(--accent);display:flex;align-items:center;gap:12px;animation:slideIn .3s ease-out forwards;min-width:250px}.toast.error{border-left-color:#ff3b30}.toast.success{border-left-color:#34c759}.toast-message{font-size:14px;font-weight:500}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}