:root{--space-1:0.5rem;--space-2:1rem;--space-3:1.5rem;--space-4:2rem;--space-5:2.5rem;--space-6:3rem;--space-8:4rem;--space-10:5rem;--text-primary:#fff;--text-secondary:#e5e7eb;--text-muted:#d1d5db;--text-on-glass:#1f2937;--accent-primary:#8b5cf6;--accent-secondary:#a78bfa;--priority-low:#10b981;--priority-medium:#f59e0b;--priority-high:#ef4444;--hover-bg:hsla(0,0%,100%,.1);--focus-ring:rgba(139,92,246,.5);--active-bg:hsla(0,0%,100%,.15);--glass-bg:hsla(0,0%,100%,.1);--glass-border:hsla(0,0%,100%,.2);--glass-blur:8px;--transition-fast:0.15s ease;--transition-smooth:0.3s ease;--transition-bounce:0.3s cubic-bezier(0.68,-0.55,0.265,1.55)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:var(--text-primary);line-height:1.6;min-height:100vh;font-size:16px}.hero-section{-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px;padding:var(--space-6);margin:var(--space-4) auto;max-width:1200px;text-align:center;box-shadow:0 8px 32px rgba(0,0,0,.1);transition:var(--transition-smooth)}.hero-section:hover{box-shadow:0 12px 40px rgba(0,0,0,.15);transform:translateY(-2px)}.modern-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:16px;padding:var(--space-4);margin:var(--space-3) 0;box-shadow:0 4px 16px rgba(0,0,0,.1);transition:var(--transition-smooth);position:relative;overflow:hidden}.modern-card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));opacity:0;transition:var(--transition-fast)}.modern-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.2)}.modern-card:hover:before{opacity:1}.modern-card:focus-within{outline:2px solid var(--focus-ring);outline-offset:2px}.modern-button{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:var(--text-primary);border:none;padding:var(--space-2) var(--space-3);border-radius:12px;font-weight:600;cursor:pointer;transition:var(--transition-bounce);font-family:inherit;font-size:1rem;box-shadow:0 4px 12px rgba(139,92,246,.3);position:relative;overflow:hidden;min-height:44px}.modern-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.2),transparent);transition:var(--transition-smooth)}.modern-button:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(139,92,246,.4)}.modern-button:hover:before{left:100%}.modern-button:focus{outline:2px solid var(--focus-ring);outline-offset:2px}.modern-button:active{transform:translateY(0);box-shadow:0 2px 8px rgba(139,92,246,.3)}.modern-button:disabled{opacity:.6;cursor:not-allowed;transform:none;pointer-events:none}.modern-input{background:hsla(0,0%,100%,.15);border:2px solid hsla(0,0%,100%,.4);color:var(--text-primary);padding:var(--space-2) var(--space-2);border-radius:8px;font-family:inherit;font-size:1rem;transition:var(--transition-fast);width:100%;min-height:44px;position:relative}.modern-input::placeholder{color:hsla(0,0%,100%,.7);font-weight:400}.modern-input:hover{background:hsla(0,0%,100%,.2);border-color:hsla(0,0%,100%,.5)}.modern-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--focus-ring);background:hsla(0,0%,100%,.25)}.modern-input:invalid{border-color:var(--priority-high);box-shadow:0 0 0 3px rgba(239,68,68,.2)}.input-label{display:block;color:var(--text-secondary);font-weight:500;margin-bottom:var(--space-1);font-size:.9rem}.tab-nav{display:flex;gap:var(--space-2);margin:var(--space-4) 0;justify-content:center;flex-wrap:wrap}.tab-button{background:hsla(0,0%,100%,.1);color:var(--text-secondary);border:2px solid hsla(0,0%,100%,.2);padding:var(--space-2) var(--space-3);border-radius:10px;cursor:pointer;font-weight:500;min-height:44px;display:flex;align-items:center;gap:var(--space-1);position:relative}.tab-button,.tab-button:before{transition:var(--transition-smooth)}.tab-button:before{content:"";position:absolute;bottom:-2px;left:50%;transform:translateX(-50%);width:0;height:3px;background:var(--accent-primary);border-radius:2px}.tab-button.active{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:var(--text-primary);border-color:var(--accent-primary);box-shadow:0 4px 12px rgba(139,92,246,.3)}.tab-button.active:before{width:80%}.tab-button:hover:not(.active){background:var(--hover-bg);transform:translateY(-2px);border-color:hsla(0,0%,100%,.4)}.tab-button:focus{outline:2px solid var(--focus-ring);outline-offset:2px}.task-card{background:hsla(0,0%,100%,.95);border-radius:12px;padding:var(--space-4);margin-bottom:var(--space-2);border-left:4px solid var(--accent-primary);box-shadow:0 4px 15px rgba(0,0,0,.08);transition:var(--transition-smooth);position:relative;color:var(--text-on-glass)}.task-card:hover{transform:translateX(5px);box-shadow:0 8px 25px rgba(0,0,0,.12)}.task-card:before{content:attr(data-priority-icon);position:absolute;top:var(--space-2);right:var(--space-2);font-size:1.2rem}.task-card.priority-high{border-left-color:var(--priority-high)}.task-card.priority-medium{border-left-color:var(--priority-medium)}.task-card.priority-low{border-left-color:var(--priority-low)}.priority-badge{display:inline-flex;align-items:center;gap:var(--space-1);padding:.25rem .75rem;border-radius:20px;font-size:.875rem;font-weight:500}.priority-badge.high{background:var(--priority-high);color:#fff}.priority-badge.medium{background:var(--priority-medium);color:#fff}.priority-badge.low{background:var(--priority-low);color:#fff}.skeleton{background:linear-gradient(90deg,hsla(0,0%,100%,.1) 25%,hsla(0,0%,100%,.2) 50%,hsla(0,0%,100%,.1) 75%);background-size:200% 100%;animation:loading 1.5s infinite;border-radius:8px}@keyframes loading{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-text{height:1rem;margin-bottom:var(--space-1)}.skeleton-title{height:1.5rem;width:60%;margin-bottom:var(--space-2)}.skeleton-card{height:120px;margin-bottom:var(--space-2)}.modern-footer{background:rgba(0,0,0,.8);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);color:var(--text-secondary);margin-top:var(--space-10);border-top:1px solid hsla(0,0%,100%,.1);padding:var(--space-6) var(--space-4)}@media (max-width:768px){.hero-section{padding:var(--space-4);margin:var(--space-2) var(--space-2)}.modern-card{padding:var(--space-3);margin:var(--space-2) 0}.feature-grid{grid-template-columns:1fr;gap:var(--space-2)}.tab-nav{flex-direction:column;align-items:center}.tab-button{width:100%;max-width:300px;justify-content:center}}@media (max-width:480px){:root{font-size:14px}.hero-section{padding:var(--space-3)}.modern-button{width:100%;min-height:48px}}