:root{--primary: #6366f1;--primary-dark: #4f46e5;--success: #10b981;--success-light: #34d399;--partial: #f59e0b;--partial-light: #fbbf24;--fail: #ef4444;--fail-light: #f87171;--empty: #9ca3af;--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-card: rgba(30, 41, 59, .8);--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--border-color: rgba(148, 163, 184, .1);--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--radius-sm: .5rem;--radius-md: 1rem;--radius-lg: 1.5rem;--radius-xl: 2rem;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .2);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .3);--transition-fast: .15s ease;--transition-base: .3s ease;--transition-slow: .5s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Poppins,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:linear-gradient(135deg,#0f172a,#1e293b,#334155);color:var(--text-primary);min-height:100vh;line-height:1.6;overflow-x:hidden}.container{max-width:1200px;margin:0 auto;padding:var(--spacing-lg)}.app-header{text-align:center;margin-bottom:var(--spacing-xl);animation:fadeInDown .6s ease}.logo-container{display:flex;justify-content:center;margin-bottom:var(--spacing-md)}.app-logo{height:80px;width:auto;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3));transition:transform var(--transition-base)}.app-logo:hover{transform:scale(1.05)}.app-title{font-size:3rem;font-weight:700;background:linear-gradient(135deg,var(--primary) 0%,var(--success) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-xs);letter-spacing:-.02em}.app-subtitle{font-size:1.125rem;color:var(--text-secondary);font-weight:300}.daily-tracker{margin-bottom:var(--spacing-xl);animation:fadeInUp .6s ease .2s both}.tracker-card{background:var(--bg-card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-xl);transition:transform var(--transition-base),box-shadow var(--transition-base)}.tracker-card:hover{transform:translateY(-2px);box-shadow:0 25px 35px #0006}.section-title{font-size:1.5rem;font-weight:600;margin-bottom:var(--spacing-xs);color:var(--text-primary)}.current-date{font-size:.875rem;color:var(--text-secondary);margin-bottom:var(--spacing-md)}.checkbox-group{display:flex;flex-direction:column;gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.checkbox-label{display:flex;align-items:center;cursor:pointer;padding:var(--spacing-md);background:#94a3b80d;border-radius:var(--radius-md);border:2px solid transparent;transition:all var(--transition-base)}.checkbox-label:hover{background:#94a3b81a;border-color:var(--primary)}.custom-checkbox{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:24px;height:24px;border:2px solid var(--text-secondary);border-radius:6px;margin-right:var(--spacing-md);cursor:pointer;position:relative;transition:all var(--transition-base);flex-shrink:0}.custom-checkbox:checked{background:linear-gradient(135deg,var(--primary),var(--success));border-color:var(--success)}.custom-checkbox:checked:after{content:"✓";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#fff;font-size:14px;font-weight:700}.checkbox-text{display:flex;align-items:center;gap:var(--spacing-sm);font-size:1rem;font-weight:500}.icon{font-size:1.5rem}.save-btn{width:100%;padding:var(--spacing-md) var(--spacing-lg);background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;font-family:Poppins,sans-serif;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);box-shadow:var(--shadow-lg);transition:all var(--transition-base)}.save-btn:hover{transform:translateY(-2px);box-shadow:0 15px 25px #6366f166}.save-btn:active{transform:translateY(0)}.btn-icon{font-size:1.25rem}.calendar-section{animation:fadeInUp .6s ease .4s both}.calendar-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-lg);padding:0 var(--spacing-sm)}.calendar-title{font-size:1.75rem;font-weight:600;color:var(--text-primary);text-align:center;flex:1}.nav-btn{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);width:48px;height:48px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-base);color:var(--text-primary);font-size:1.5rem;font-weight:600}.nav-btn:hover{background:var(--primary);border-color:var(--primary);transform:scale(1.05)}.calendar-wrapper{background:var(--bg-card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-xl);margin-bottom:var(--spacing-lg)}.calendar-weekdays{display:grid;grid-template-columns:repeat(7,1fr);gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.weekday{text-align:center;font-weight:600;font-size:.875rem;color:var(--text-secondary);padding:var(--spacing-xs)}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:var(--spacing-sm)}.calendar-day{aspect-ratio:1;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);font-weight:500;font-size:.875rem;cursor:pointer;transition:all var(--transition-base);position:relative;border:2px solid transparent}.calendar-day:not(.empty-day):hover{transform:scale(1.1);z-index:10}.calendar-day.empty-day{background:#94a3b80d;color:var(--empty);cursor:default}.calendar-day.other-month{color:var(--empty);opacity:.4}.calendar-day.today{border-color:var(--primary);box-shadow:0 0 0 3px #6366f133}.calendar-day.success{background:linear-gradient(135deg,var(--success),var(--success-light));color:#fff;font-weight:600;box-shadow:0 4px 12px #10b98166}.calendar-day.partial{background:linear-gradient(135deg,var(--partial),var(--partial-light));color:#fff;font-weight:600;box-shadow:0 4px 12px #f59e0b66}.calendar-day.fail{background:linear-gradient(135deg,var(--fail),var(--fail-light));color:#fff;font-weight:600;box-shadow:0 4px 12px #ef444466}.calendar-day.no-data{background:#94a3b81a;color:var(--text-secondary)}.legend{background:var(--bg-card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-lg)}.legend-title{font-size:1.125rem;font-weight:600;margin-bottom:var(--spacing-md);color:var(--text-primary)}.legend-items{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-md)}.legend-item{display:flex;align-items:center;gap:var(--spacing-sm)}.legend-color{width:24px;height:24px;border-radius:6px;flex-shrink:0;box-shadow:var(--shadow-md)}.legend-color.success{background:linear-gradient(135deg,var(--success),var(--success-light))}.legend-color.partial{background:linear-gradient(135deg,var(--partial),var(--partial-light))}.legend-color.fail{background:linear-gradient(135deg,var(--fail),var(--fail-light))}.legend-color.empty{background:#94a3b81a;border:2px solid var(--empty)}.legend-text{font-size:.875rem;color:var(--text-secondary)}.app-footer{text-align:center;margin-top:var(--spacing-xl);padding-top:var(--spacing-lg);border-top:1px solid var(--border-color);color:var(--text-secondary);font-size:.875rem;animation:fadeIn .6s ease .6s both}.app-footer strong{color:var(--primary);font-weight:600}.toast{position:fixed;bottom:2rem;right:2rem;background:var(--bg-secondary);color:var(--text-primary);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-xl);border:1px solid var(--border-color);opacity:0;transform:translateY(100px);transition:all var(--transition-base);z-index:1000;max-width:300px;font-weight:500}.toast.show{opacity:1;transform:translateY(0)}.toast.success{border-left:4px solid var(--success)}.toast.error{border-left:4px solid var(--fail)}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (max-width: 768px){.container{padding:var(--spacing-md)}.app-title{font-size:2rem}.app-logo{height:60px}.legend-items{grid-template-columns:1fr}.calendar-title{font-size:1.25rem}.calendar-day{font-size:.75rem}.toast{right:1rem;bottom:1rem;left:1rem;max-width:none}}@media (max-width: 480px){.app-title{font-size:1.75rem}.calendar-header{flex-wrap:wrap;gap:var(--spacing-sm)}.calendar-title{width:100%;order:-1;margin-bottom:var(--spacing-sm)}.weekday{font-size:.75rem}}