:root{--color-primary: #7C3AED;--color-secondary: #06B6D4;--color-success: #10B981;--color-warning: #F59E0B;--color-background: #1F2937;--color-card: #374151;--color-text: #F9FAFB;--color-text-muted: #9CA3AF;--color-gold: #FFD700}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--color-background);color:var(--color-text);min-height:100vh;line-height:1.5}#root{min-height:100vh;max-width:480px;margin:0 auto;padding:16px}button{cursor:pointer;border:none;font-family:inherit}input{font-family:inherit}.level-card{background-color:var(--color-card);border-radius:12px;padding:20px;margin-bottom:20px}.level-info{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.level-label{font-size:24px;font-weight:700;color:var(--color-text)}.xp-text{font-size:14px;color:var(--color-text-muted)}.xp-bar-container{height:12px;background-color:var(--color-background);border-radius:6px;overflow:hidden}.xp-bar{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-secondary));border-radius:6px;transition:width .3s ease}.streak-badge{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:12px;padding:8px;background-color:#f59e0b1a;border-radius:8px}.streak-icon{font-size:20px}.streak-icon.animated{animation:flame .5s ease-in-out infinite alternate}.streak-icon.gold{filter:drop-shadow(0 0 4px var(--color-gold));animation:flame .3s ease-in-out infinite alternate}.streak-text{font-size:14px;font-weight:600;color:var(--color-warning)}@keyframes flame{0%{transform:scale(1)}to{transform:scale(1.1)}}.habit-item{background-color:var(--color-card);border-radius:12px;padding:16px;margin-bottom:12px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:transform .2s,background-color .2s;position:relative;overflow:hidden}.habit-item:hover{background-color:#3f4a5c}.habit-item:active{transform:scale(.98)}.habit-item.completed{opacity:.8}.habit-item.master{border:2px solid var(--color-gold)}.habit-checkbox{width:28px;height:28px;border-radius:50%;border:2px solid var(--color-text-muted);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .2s}.habit-item.completed .habit-checkbox{background-color:var(--color-success);border-color:var(--color-success)}.checkmark{color:#fff;font-size:16px;font-weight:700;animation:checkBounce .3s ease}.empty-circle{display:block}.habit-content{flex:1}.habit-header{display:flex;align-items:center;gap:8px;margin-bottom:4px}.habit-icon{font-size:20px}.habit-name{font-size:16px;font-weight:500;color:var(--color-text)}.master-badge{color:var(--color-gold);font-size:16px}.habit-meta{font-size:13px;color:var(--color-text-muted)}.xp-reward{color:var(--color-secondary)}.multiplier{margin-left:4px;color:var(--color-warning);font-size:12px}.master-text{color:var(--color-gold);font-weight:600}.xp-popup{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--color-secondary);font-size:18px;font-weight:700;animation:floatUp 1s ease forwards}@keyframes checkBounce{0%{transform:scale(0)}50%{transform:scale(1.2)}to{transform:scale(1)}}@keyframes floatUp{0%{opacity:1;transform:translateY(-50%)}to{opacity:0;transform:translateY(-100%)}}.habit-list{margin-bottom:80px}.habit-list-empty{text-align:center;padding:40px 20px;color:var(--color-text-muted)}.habit-list-empty p{font-size:16px;margin-bottom:8px}.empty-hint{font-size:14px;opacity:.7}.modal-backdrop{position:fixed;inset:0;background-color:#000000b3;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100;animation:fadeIn .2s ease}.modal-content{background-color:var(--color-card);border-radius:16px;width:100%;max-width:400px;animation:slideUp .3s ease}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid var(--color-background)}.modal-header h2{font-size:18px;font-weight:600;color:var(--color-text)}.modal-close{background:none;color:var(--color-text-muted);font-size:24px;width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center}.modal-close:hover{background-color:var(--color-background)}.modal-body{padding:20px}.input-label{display:block;font-size:14px;font-weight:500;color:var(--color-text-muted);margin-bottom:8px}.habit-input{width:100%;padding:12px 16px;font-size:16px;border:2px solid var(--color-background);border-radius:8px;background-color:var(--color-background);color:var(--color-text);margin-bottom:20px;outline:none;transition:border-color .2s}.habit-input:focus{border-color:var(--color-primary)}.habit-input::placeholder{color:var(--color-text-muted)}.icon-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.icon-button{width:100%;aspect-ratio:1;font-size:24px;background-color:var(--color-background);border-radius:8px;transition:all .2s}.icon-button:hover{background-color:#4b5563}.icon-button.selected{background-color:var(--color-primary);transform:scale(1.1)}.modal-footer{padding:20px;border-top:1px solid var(--color-background)}.submit-button{width:100%;padding:14px;font-size:16px;font-weight:600;color:#fff;background-color:var(--color-primary);border-radius:8px;transition:opacity .2s}.submit-button:hover:not(:disabled){opacity:.9}.submit-button:disabled{opacity:.5;cursor:not-allowed}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.app{min-height:100vh;padding-bottom:100px}.app-header{padding:16px 0;margin-bottom:8px}.app-title{font-size:24px;font-weight:700;color:var(--color-text);text-align:center}.app-main{padding:0}.add-button{position:fixed;bottom:24px;left:50%;transform:translate(-50%);padding:14px 32px;font-size:16px;font-weight:600;color:#fff;background-color:var(--color-primary);border-radius:30px;box-shadow:0 4px 12px #7c3aed66;transition:transform .2s,box-shadow .2s}.add-button:hover{transform:translate(-50%) translateY(-2px);box-shadow:0 6px 16px #7c3aed80}.add-button:active{transform:translate(-50%) scale(.98)}