:root{--color1: #edf0f8;--color2: #dae1f1;--color3: #b6c3e2;--color4: #91a5d4;--color5: #6c87c6;--color6: #4769b8;--color7: #395493;--color8: #2b3f6e;--color9: #1d2a49;--color10: #0e1525;--color11: #0a0f1a;--color12: #e8ebfc;--color13: #d1d7fa;--color14: #a3aff5;--color15: #7588f0;--color16: #4760eb;--color17: #1938e6;--color18: #142db8;--color19: #0f228a;--color20: #0a165c;--color21: #050b2e;--color22: #040820;--color23: #02081c;--color24: #fff4e5;--color25: #ffe9cc;--color26: #ffd399;--color27: #ffbd66;--color28: #ffa733;--color29: #ff9100;--color30: #cc7400;--color31: #995700;--color32: #663a00;--color33: #331d00;--color34: #241400;--color35: #eef2f7;--color36: #dce5ef;--color37: #bacade;--color38: #97b0ce;--color39: #7495be;--color40: #527bad;--color41: #41628b;--color42: #314a68;--color43: #213145;--color44: #101923;--color45: #0b1118;--bg-color: var(--color45);--panel-bg: rgba(30, 41, 59, .7);--text-main: var(--color24);--text-muted: var(--color36);--accent-primary: var(--color41);--accent-secondary: var(--color38);--success: var(--color39);--danger: var(--color30);--border-color: rgba(255, 255, 255, .1);--glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, .37);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);background-image:radial-gradient(circle at top right,rgba(139,92,246,.15),transparent 40%),radial-gradient(circle at bottom left,rgba(236,72,153,.15),transparent 40%);color:var(--text-main);min-height:100vh;display:flex;justify-content:center;align-items:flex-start;padding:4rem 1rem}@media(max-width:768px){body{padding:2rem 1rem}}@media(max-width:480px){body{padding:0;align-items:flex-start}}button{cursor:pointer;font-family:inherit;border:none;outline:none;transition:all .3s ease;background-color:var(--color5);color:var(--text-main);padding:10px 20px;border-radius:4px}button:hover{background-color:var(--color6)}input{font-family:inherit;outline:none;background-color:var(--bg-color);color:var(--text-main);padding:8px 12px;border:1px solid var(--color3)}input:focus{border-color:var(--color4)}h1,h2,h3{color:var(--color5)}.app-container{display:flex;flex-direction:column;min-height:90vh;width:100%;max-width:600px;background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:24px;padding:2rem;box-shadow:var(--glass-shadow);animation:slideIn .5s ease-out}.main-content{flex-grow:1}.app-footer{margin-top:2rem;padding-top:1rem;text-align:center;color:var(--text-muted);font-size:.85em;border-top:1px solid var(--border-color)}.app-footer code{background:#8b5cf61a;padding:.2rem .4rem;border-radius:6px;margin:0 .2rem;color:var(--accent-primary)}@keyframes slideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.title{font-size:2.5rem;font-weight:800;text-align:center;margin-bottom:2rem;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.todo-form{display:flex;gap:1rem;margin-bottom:2rem}.todo-input{flex:1;background:#0f172a99;border:1px solid var(--border-color);color:var(--text-main);padding:1rem 1.5rem;border-radius:12px;font-size:1rem;transition:all .3s ease}.todo-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px #8b5cf633}.todo-input::placeholder{color:var(--text-muted)}.add-btn{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;font-weight:600;padding:0 1.5rem;border-radius:12px;display:flex;align-items:center;justify-content:center}.add-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #8b5cf666}.add-btn:active{transform:translateY(0)}.todo-list{list-style:none;display:flex;flex-direction:column;gap:1rem}.todo-item{display:flex;align-items:center;justify-content:space-between;background:#ffffff08;border:1px solid var(--border-color);padding:1rem;border-radius:12px;transition:all .3s ease;animation:fadeIn .4s ease}.todo-item:hover{background:#ffffff0d;border-color:#fff3;transform:translate(4px)}@keyframes fadeIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.todo-content{display:flex;align-items:center;gap:1rem;flex:1}.checkbox{appearance:none;width:24px;height:24px;border:2px solid var(--text-muted);border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.checkbox:checked{background-color:var(--success);border-color:var(--success)}.checkbox:checked:after{content:"✔";color:#fff;font-size:14px}.todo-text{font-size:1.1rem;color:var(--text-main);transition:color .3s ease}.todo-text.completed{text-decoration:line-through;color:var(--text-muted)}.delete-btn{background:transparent;color:var(--text-muted);font-size:1.2rem;padding:.5rem;border-radius:8px}.delete-btn:hover{background:#ef44441a;color:var(--danger)}.loading,.error,.empty{text-align:center;padding:2rem;color:var(--text-muted);font-size:1.1rem}.error{color:var(--danger)}@media(max-width:768px){.app-container{padding:1.75rem;width:90%;max-width:600px;min-height:80vh}.title{font-size:2.25rem}}@media(max-width:480px){.app-container{padding:1.5rem 1rem;border-radius:0;margin:0;width:100%;max-width:100%;min-height:100vh;border:none;box-shadow:none;display:flex;flex-direction:column}.main-content,.todo-wrapper{flex-grow:1;display:flex;flex-direction:column}.todo-list{flex-grow:1}.title{font-size:1.75rem;margin-bottom:1.25rem}.todo-form{flex-direction:column;gap:.75rem}.add-btn{padding:1rem;width:100%;font-size:1.05rem;justify-content:center}.todo-item{padding:.85rem .75rem;border-radius:10px}.todo-text{font-size:1rem}.app-footer{display:flex;flex-direction:column;gap:.75rem;margin-top:2rem;padding-bottom:1rem}.app-footer code{display:inline-block}}