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ease}.celebration-content{background:linear-gradient(135deg,#667eea,#764ba2);padding:3rem;border-radius:20px;text-align:center;position:relative;overflow:hidden;animation:celebrationPop .5s cubic-bezier(.68,-.55,.265,1.55);max-width:90%}.celebration-chapter{background:linear-gradient(135deg,#f093fb,#f5576c)}.celebration-milestone{background:linear-gradient(135deg,#4facfe,#00f2fe)}.celebration-first{background:linear-gradient(135deg,#43e97b,#38f9d7)}.celebration-icon{font-size:5rem;margin-bottom:1rem;animation:bounce 1s infinite}.celebration-message{color:#fff;font-size:2rem;margin:0;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.confetti{position:absolute;inset:0;pointer-events:none}.confetti-piece{position:absolute;width:10px;height:10px;top:-10px;animation:confettiFall 3s linear forwards}@keyframes confettiFall{to{transform:translateY(100vh) rotate(360deg);opacity:0}}@keyframes celebrationPop{0%{transform:scale(.5);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.profile-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:9999;animation:fadeIn .3s ease}.profile-modal{background:var(--bg-card);padding:2rem;border-radius:20px;max-width:600px;width:90%;max-height:80vh;overflow-y:auto;position:relative;box-shadow:0 10px 40px var(--shadow);animation:slideUp .3s ease;border:2px solid var(--border-color)}.close-profile{position:absolute;top:1rem;right:1rem;background:transparent;border:none;font-size:2rem;cursor:pointer;color:var(--text-secondary);transition:color .3s ease;line-height:1;padding:0}.close-profile:hover{color:var(--text-primary);transform:scale(1.1)}.profile-modal h2{text-align:center;margin-bottom:2rem;color:var(--text-primary);font-size:24px}.profile-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1.5rem}.profile-stat-card{background:var(--bg-secondary);padding:1.5rem;border-radius:15px;text-align:center;border:2px solid var(--border-color);transition:transform .3s ease,box-shadow .3s ease}.profile-stat-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px var(--shadow);border-color:var(--accent-primary)}.profile-stat-card.full-width{grid-column:1 / -1}.stat-icon{font-size:2.5rem;margin-bottom:.5rem}.stat-number{font-size:2rem;font-weight:700;color:var(--accent-primary);margin:.5rem 0}.stat-label{font-size:.9rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px;font-weight:600}.first-contrib-text{font-style:italic;color:var(--text-secondary);margin:1rem 0 .5rem;font-size:.95rem;line-height:1.5}.first-contrib-date{color:var(--text-secondary);font-size:.85rem;margin-top:.5rem}@keyframes slideUp{0%{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.wallet-info{display:flex;gap:1rem;align-items:center;flex-wrap:wrap;justify-content:center}.profile-stats-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:25px;cursor:pointer;font-weight:600;transition:all .3s ease;white-space:nowrap;font-size:14px}.profile-stats-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}@media(max-width:768px){.header{padding:20px 16px}.logo{font-size:24px}.stats-bar{grid-template-columns:repeat(3,1fr);padding:16px;gap:12px}.stat-label{font-size:10px}.stat-value{font-size:16px}.main-content{padding:16px;gap:24px}.story-section,.contribution-section,.activity-section{padding:16px}.section-header h2,.contribution-section h2,.activity-section h2{font-size:20px}.sentence{gap:12px;padding:12px}.sentence-number{width:32px;height:32px;font-size:12px}.sentence-text{font-size:14px}.story-container{max-height:400px}.celebration-content{padding:2rem 1.5rem;margin:1rem}.celebration-message{font-size:1.5rem}.celebration-icon{font-size:4rem}.profile-modal{padding:1.5rem;width:95%}.profile-stats-grid{grid-template-columns:1fr}.wallet-info{flex-direction:column;width:100%}.profile-stats-btn{width:100%}.wallet-connected{flex-direction:column;width:100%;text-align:center}.header-top{flex-direction:column;align-items:center;gap:1rem}.theme-toggle{width:45px;height:45px;font-size:1.3rem}}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,#1a1a2e,#16213e);display:flex;justify-content:center;align-items:center;z-index:9999;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.spinner-container{display:flex;flex-direction:column;align-items:center;gap:1.5rem;text-align:center;max-width:90%;z-index:10000;position:relative}.spinner{width:50px;height:50px;border:5px solid rgba(255,255,255,.1);border-top:5px solid var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-message{color:#fff;font-size:1.2rem;font-weight:500;margin:0;text-align:center;max-width:100%;word-wrap:break-word;animation:pulse 2s infinite}@media(max-width:768px){.spinner{width:40px;height:40px;border-width:4px}.loading-message{font-size:1rem}}@media(max-width:480px){.spinner{width:30px;height:30px;border-width:3px}.loading-message{font-size:.9rem}}@keyframes pulse{0%{opacity:1}50%{opacity:.5}to{opacity:1}}