@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Fira+Code:wght@400;500&display=swap";:root{--bg-color:#0b0f19;--panel-bg:#11182799;--panel-border:#ffffff1a;--text-main:#f8fafc;--text-muted:#94a3b8;--primary:#8b5cf6;--primary-glow:#8b5cf666;--error:#f43f5e;--error-glow:#f43f5e66;--success:#10b981;--success-glow:#10b98166;--input-bg:#0f172ab3}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);flex-direction:column;align-items:center;min-height:100vh;font-family:Inter,sans-serif;display:flex;position:relative;overflow-x:hidden}.bg-orb{filter:blur(120px);z-index:-1;opacity:.5;border-radius:50%;animation:25s ease-in-out infinite alternate float;position:absolute}.orb-1{background:var(--primary-glow);width:500px;height:500px;top:-15%;left:-10%}.orb-2{background:var(--success-glow);width:450px;height:450px;animation-delay:-5s;bottom:-15%;right:-10%}@keyframes float{0%{transform:translate(0)scale(1)}50%{transform:translate(50px,60px)scale(1.1)}to{transform:translate(-30px,90px)scale(.9)}}.page-header{text-align:center;z-index:10;margin:60px 0 40px}.title{letter-spacing:-.04em;background:linear-gradient(90deg,#fff,#a5b4fc);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:12px;font-size:2.5rem;font-weight:800}.subtitle{color:var(--text-muted);font-size:1.1rem}.grid-container{z-index:10;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:24px;width:100%;max-width:1100px;padding:0 24px 60px;display:grid}.challenge-card{background:var(--panel-bg);-webkit-backdrop-filter:blur(16px);border:1px solid var(--panel-border);cursor:pointer;border-radius:20px;flex-direction:column;gap:16px;padding:24px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.challenge-card:hover{border-color:#ffffff4d;transform:translateY(-4px);box-shadow:0 20px 40px -10px #00000080}.challenge-card.solved{border-color:var(--success);background:#10b9810d}.challenge-card.solved:hover{box-shadow:0 20px 40px -10px var(--success-glow)}.challenge-card.coming-soon{cursor:not-allowed;border-color:#f59e0b59}.challenge-card.coming-soon:hover{border-color:#f59e0b8c;box-shadow:0 20px 40px -10px #f59e0b40}.card-header{justify-content:space-between;align-items:flex-start;display:flex}.card-title{color:var(--text-main);align-items:center;gap:10px;margin-bottom:8px;font-size:1.3rem;font-weight:600;display:flex}.card-desc{color:var(--text-muted);font-size:.95rem;line-height:1.6}.click-hint{color:var(--primary);opacity:.8;align-items:center;gap:6px;margin-top:auto;font-size:.9rem;font-weight:500;transition:opacity .2s;display:flex}.challenge-card:hover .click-hint{opacity:1}.solved-overlay{color:var(--success);background:#10b9811a;border:1px solid #10b98133;border-radius:12px;justify-content:center;align-items:center;gap:10px;margin-top:auto;padding:12px;font-weight:600;display:flex}.coming-soon-overlay{color:#fbbf24;background:#f59e0b1a;border:1px solid #f59e0b40;border-radius:12px;justify-content:center;align-items:center;gap:10px;margin-top:auto;padding:12px;font-weight:600;display:flex}.coming-soon-emoji{font-size:1.15rem}.detail-view{z-index:10;width:100%;max-width:600px;padding:0 24px 60px;animation:.4s fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.back-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:8px;align-items:center;gap:8px;margin-bottom:24px;padding:8px 12px;font-size:1rem;transition:all .2s;display:flex}.back-btn:hover{color:var(--text-main);background:#ffffff0d}.detail-card{background:var(--panel-bg);-webkit-backdrop-filter:blur(20px);border:1px solid var(--panel-border);border-radius:24px;flex-direction:column;gap:24px;padding:40px;display:flex;box-shadow:0 25px 50px -12px #0009}.detail-card.shake{border-color:var(--error);animation:.5s cubic-bezier(.36,.07,.19,.97) both shake}.detail-card.success{border-color:var(--success);box-shadow:0 0 30px var(--success-glow)}.detail-title{margin-bottom:12px;font-size:1.8rem;font-weight:700}.detail-desc{color:var(--text-muted);font-size:1.05rem;line-height:1.6}.action-area{flex-direction:column;gap:16px;margin-top:16px;display:flex}.flag-input{background:var(--input-bg);border:1px solid var(--panel-border);width:100%;color:var(--text-main);border-radius:12px;outline:none;padding:16px;font-family:Fira Code,monospace;font-size:1.05rem;transition:all .3s}.flag-input:focus{border-color:var(--primary);box-shadow:0 0 0 2px #8b5cf640}.submit-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;gap:8px;width:100%;padding:16px;font-size:1.05rem;font-weight:600;transition:all .2s;display:flex}.submit-btn:not(:disabled):hover{background:#7c3aed;transform:translateY(-2px)}.submit-btn:disabled{opacity:.6;cursor:not-allowed}.shake{animation:.5s cubic-bezier(.36,.07,.19,.97) both shake}@keyframes shake{10%,90%{transform:translate(-1px)}20%,80%{transform:translate(2px)}30%,50%,70%{transform:translate(-4px)}40%,60%{transform:translate(4px)}}.feedback{text-align:center;min-height:24px;font-size:1rem;font-weight:500}.feedback.error{color:var(--error)}.feedback.success{color:var(--success)}.spinner{border:3px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:1s ease-in-out infinite spin}@keyframes spin{to{transform:rotate(360deg)}}#confetti-canvas{pointer-events:none;z-index:1000;width:100%;height:100%;position:fixed;top:0;left:0}