:root{--font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--primary: #06B6D4;--primary-light: #22D3EE;--primary-dark: #0891B2;--secondary: #14B8A6;--secondary-light: #2DD4BF;--accent: #0EA5E9;--accent-light: #38BDF8;--bg-primary: linear-gradient(135deg, #E0F2FE 0%, #CFFAFE 100%);--bg-secondary: #FFFFFF;--bg-tertiary: #F0FDFA;--text-primary: #0F172A;--text-secondary: #334155;--text-muted: #64748B;--border: rgba(6, 182, 212, .2);--border-light: rgba(6, 182, 212, .1);--shadow-color: rgba(6, 182, 212, .15);--space-xs: .5rem;--space-sm: 1rem;--space-md: 1.5rem;--space-lg: 2rem;--space-xl: 3rem;--radius-sm: .5rem;--radius-md: 1rem;--radius-lg: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 2px 8px var(--shadow-color);--shadow-md: 0 4px 16px var(--shadow-color);--shadow-lg: 0 8px 32px var(--shadow-color);--shadow-glow: 0 0 20px rgba(6, 182, 212, .3);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}[data-theme=dark]{--bg-primary: linear-gradient(135deg, #0A2E3C 0%, #0F3D4D 100%);--bg-secondary: #164E63;--bg-tertiary: #155E75;--text-primary: #F0FDFA;--text-secondary: #CCFBF1;--text-muted: #99F6E4;--border: rgba(34, 211, 238, .3);--border-light: rgba(34, 211, 238, .15);--shadow-color: rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(34, 211, 238, .4)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden;transition:background var(--transition-base),color var(--transition-base)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;margin-bottom:var(--space-sm);color:var(--text-primary)}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem;color:var(--text-secondary)}#app{max-width:1400px;margin:0 auto;padding:var(--space-lg)}.container{width:100%;max-width:900px;margin:0 auto}.fade-in{animation:fadeIn .3s ease forwards}.app-header{text-align:center;padding:2rem 1rem;position:relative}.app-title{font-size:3rem;margin-bottom:var(--space-sm);animation:fadeInDown .6s ease;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.app-subtitle{color:var(--text-muted);font-size:1.1rem;animation:fadeInUp .6s ease .2s both}.app-footer{text-align:center;padding:var(--space-xl) 0;margin-top:var(--space-xl);border-top:1px solid var(--border);color:var(--text-muted);font-size:.9rem}.app-footer p{margin:0 0 .5rem;letter-spacing:.5px}.footer-link{background:none;border:none;color:var(--primary);cursor:pointer;font-size:.9rem;display:inline-flex;align-items:center;gap:.25rem;padding:.5rem;transition:opacity var(--transition-base)}.footer-link:hover{opacity:.7;text-decoration:underline}.theme-toggle{position:absolute;top:var(--space-md);right:var(--space-md);background:var(--bg-secondary);border:2px solid var(--border);border-radius:var(--radius-full);width:50px;height:50px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-base);box-shadow:var(--shadow-sm)}.theme-toggle:hover{transform:scale(1.1);box-shadow:var(--shadow-glow);border-color:var(--primary)}.theme-toggle svg{width:24px;height:24px;color:var(--primary)}.nav-tabs{display:flex;gap:var(--space-sm);margin-bottom:var(--space-xl);padding:var(--space-sm);background:var(--bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow-x:auto;flex-wrap:wrap}.nav-tab{flex:1;min-width:140px;padding:var(--space-sm) var(--space-md);background:transparent;border:2px solid var(--border);border-radius:var(--radius-md);color:var(--text-secondary);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-base);position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;gap:var(--space-xs)}.nav-tab svg{width:20px;height:20px}.nav-tab:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(6,182,212,.2),transparent);transition:left var(--transition-slow)}.nav-tab:hover:before{left:100%}.nav-tab:hover{border-color:var(--primary);color:var(--text-primary);transform:translateY(-2px);box-shadow:var(--shadow-glow)}.nav-tab.active{background:linear-gradient(135deg,var(--primary),var(--secondary));border-color:transparent;color:#fff;box-shadow:var(--shadow-glow)}.card{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:var(--space-lg);box-shadow:var(--shadow-md);border:1px solid var(--border);transition:all var(--transition-base);animation:fadeIn .4s ease}.card:hover{box-shadow:var(--shadow-lg);border-color:var(--primary)}.form-group{margin-bottom:var(--space-md)}.form-label{display:block;margin-bottom:var(--space-xs);color:var(--text-secondary);font-weight:600;font-size:.95rem;text-transform:uppercase;letter-spacing:.5px}.form-input,.form-textarea{width:100%;padding:var(--space-sm);background:var(--bg-tertiary);border:2px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:1rem;font-family:inherit;transition:all var(--transition-base)}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #06b6d41a}.form-textarea{min-height:120px;resize:vertical;line-height:1.8}.form-input::placeholder,.form-textarea::placeholder{color:var(--text-muted)}.btn{padding:var(--space-sm) var(--space-lg);border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-base);position:relative;overflow:hidden;display:inline-flex;align-items:center;gap:var(--space-xs)}.btn svg{width:20px;height:20px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:2px solid var(--border)}.btn-secondary:hover{border-color:var(--primary);background:var(--bg-secondary)}.btn-icon{width:40px;height:40px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full)}.journal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg);flex-wrap:wrap;gap:var(--space-sm)}.day-selector{display:flex;gap:var(--space-xs)}.day-btn{width:40px;height:40px;border-radius:var(--radius-full);background:var(--bg-tertiary);border:2px solid var(--border);color:var(--text-secondary);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.day-btn:hover{border-color:var(--primary);color:var(--text-primary)}.day-btn.active{background:linear-gradient(135deg,var(--primary),var(--secondary));border-color:transparent;color:#fff;box-shadow:var(--shadow-glow)}.form-row{display:grid;grid-template-columns:1fr;gap:var(--space-md);margin-bottom:var(--space-md)}.form-row-bottom{display:grid;grid-template-columns:2fr 1fr;gap:var(--space-md);margin-top:var(--space-lg)}.notes-section{margin:var(--space-lg) 0}.notes-lines{background:var(--bg-tertiary);border:2px solid var(--border);background-image:repeating-linear-gradient(transparent,transparent 31px,var(--border) 31px,var(--border) 32px);padding:var(--space-md);border-radius:var(--radius-sm);min-height:280px}.file-preview{display:flex;flex-wrap:wrap;gap:1rem;margin-top:1rem}.file-item{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:1rem;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);position:relative;max-width:150px}.file-thumbnail{width:100px;height:100px;object-fit:cover;border-radius:var(--radius-sm)}.file-icon{width:100px;height:100px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:var(--radius-sm);font-size:3rem;color:var(--primary)}.file-name{font-size:.85rem;text-align:center;word-break:break-word;max-width:100%}.file-item .btn-icon{position:absolute;top:.5rem;right:.5rem;background:var(--danger);color:#fff;border:none;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0}.file-item .btn-icon:hover{opacity:.8}.heatmap-container{margin-bottom:1.5rem;background:var(--bg-tertiary);padding:1rem;border-radius:var(--radius-md);border:1px solid var(--border)}.heatmap-grid{display:grid;grid-template-columns:repeat(14,1fr);gap:6px;margin-top:.5rem}.heatmap-square{aspect-ratio:1;border-radius:3px;transition:transform .2s ease}.heatmap-square:hover{transform:scale(1.2)}.coloring-container{text-align:center}.coloring-canvas-wrapper{position:relative;display:inline-block;margin:var(--space-lg) 0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:#fff}.coloring-canvas{display:block;max-width:100%;height:auto;background:#fff;cursor:crosshair}.coloring-canvas.fill-mode{cursor:pointer}.color-palette{display:flex;gap:var(--space-sm);justify-content:center;flex-wrap:wrap;margin:var(--space-lg) 0;padding:var(--space-md);background:var(--bg-secondary);border-radius:var(--radius-md)}.color-btn{width:50px;height:50px;border-radius:var(--radius-full);border:3px solid transparent;cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.color-btn:hover{transform:scale(1.1);box-shadow:var(--shadow-md)}.color-btn.active{border-color:var(--primary);box-shadow:0 0 0 3px #06b6d44d;transform:scale(1.15)}.tool-controls{display:flex;gap:var(--space-md);justify-content:center;margin-bottom:var(--space-lg);flex-wrap:wrap;align-items:center}.tool-mode-selector{display:flex;gap:var(--space-xs);background:var(--bg-secondary);padding:var(--space-xs);border-radius:var(--radius-md);border:2px solid var(--border)}.tool-mode-btn{padding:var(--space-sm) var(--space-md);background:transparent;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;gap:var(--space-xs);font-weight:600}.tool-mode-btn svg{width:18px;height:18px}.tool-mode-btn.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}.brush-size-control{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--bg-secondary);border-radius:var(--radius-md);border:2px solid var(--border)}.brush-size-slider{width:150px}.reference-container{text-align:center}.reference-content{background:var(--bg-tertiary);border-radius:var(--radius-lg);padding:var(--space-xl);margin:var(--space-lg) 0;box-shadow:var(--shadow-md);border:2px solid var(--border)}.reference-selector{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-md);margin-bottom:var(--space-xl)}.reference-card{padding:var(--space-md);background:var(--bg-tertiary);border:2px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base)}.reference-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow-glow)}.reference-card.active{background:linear-gradient(135deg,var(--primary),var(--secondary));border-color:transparent;color:#fff}.interval-list,.tempo-list{text-align:left;max-width:600px;margin:0 auto}.interval-item,.tempo-item{padding:var(--space-sm);margin-bottom:var(--space-xs);background:var(--bg-secondary);border-radius:var(--radius-sm);border-left:4px solid var(--primary)}.circle-diagram{max-width:500px;margin:var(--space-lg) auto}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.welcome-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:var(--space-lg)}.welcome-card{max-width:700px;width:100%;background:var(--bg-secondary);padding:var(--space-xl) var(--space-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;animation:fadeInScale .6s ease;border:2px solid var(--border)}.welcome-title{font-family:Inter,sans-serif;font-size:2.5rem;font-weight:400;color:var(--text-primary);margin-bottom:var(--space-xl);letter-spacing:1px;text-transform:uppercase;line-height:1.4}.welcome-input-wrapper{margin:var(--space-xl) 0}.welcome-input{width:100%;max-width:500px;padding:var(--space-md) var(--space-lg);font-size:1.5rem;font-family:Inter,sans-serif;text-align:center;border:3px solid var(--border);border-radius:var(--radius-md);background:var(--bg-tertiary);color:var(--text-primary);transition:all var(--transition-base)}.welcome-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px #06b6d41a;transform:scale(1.02)}.welcome-input::placeholder{color:var(--text-muted)}.welcome-btn{margin-top:var(--space-xl);font-size:1.2rem;padding:var(--space-md) var(--space-xl)}.shake{animation:shake .5s ease}@keyframes fadeInScale{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}@media(max-width:768px){.app-title{font-size:2rem}.form-row,.form-row-bottom{grid-template-columns:1fr}.nav-tabs{flex-direction:column}.nav-tab{min-width:100%}#app{padding:var(--space-md)}.welcome-title{font-size:1.8rem}.welcome-input{font-size:1.2rem}.theme-toggle{position:fixed;top:var(--space-sm);right:var(--space-sm);z-index:1000}.reference-content div[style*="grid-template-columns: 1fr 1fr"]{grid-template-columns:1fr!important}}.hidden{display:none!important}.text-center{text-align:center}.text-left{text-align:left}.mt-lg{margin-top:var(--space-lg)}.mb-lg{margin-bottom:var(--space-lg)}.text-secondary{color:var(--text-secondary)}