:root[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--bg-quaternary: #e2e8f0;--text-primary: #0f172a;--text-secondary: #334155;--text-tertiary: #64748b;--text-quaternary: #94a3b8;--accent-primary: #2563eb;--accent-hover: #1d4ed8;--accent-light: #dbeafe;--accent-lighter: #eff6ff;--success: #10b981;--success-light: #d1fae5;--warning: #f59e0b;--warning-light: #fef3c7;--error: #ef4444;--error-light: #fee2e2;--info: #3b82f6;--info-light: #dbeafe;--border-color: #e2e8f0;--border-light: #f1f5f9;--border-dark: #cbd5e1;--shadow-color: rgba(15, 23, 42, .08);--shadow-color-strong: rgba(15, 23, 42, .15);--card-bg: #ffffff;--card-border: #e2e8f0;--input-bg: #ffffff;--input-border: #d1d5db;--toggle-bg: #e5e7eb;--toggle-thumb: #ffffff;--toggle-icon: #6b7280;--shadow-xs: 0 1px 2px 0 var(--shadow-color);--shadow-sm: 0 1px 3px 0 var(--shadow-color), 0 1px 2px -1px var(--shadow-color);--shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);--shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -4px var(--shadow-color);--shadow-xl: 0 20px 25px -5px var(--shadow-color), 0 8px 10px -6px var(--shadow-color);--shadow-inner: inset 0 2px 4px 0 var(--shadow-color);--gradient-primary: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-hover) 100%);--gradient-secondary: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);--mobile-header-height: 64px;--mobile-nav-height: 56px;--mobile-safe-area-top: env(safe-area-inset-top);--mobile-safe-area-bottom: env(safe-area-inset-bottom);--mobile-safe-area-left: env(safe-area-inset-left);--mobile-safe-area-right: env(safe-area-inset-right)}:root[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--bg-quaternary: #475569;--text-primary: #f8fafc;--text-secondary: #e2e8f0;--text-tertiary: #cbd5e1;--text-quaternary: #94a3b8;--accent-primary: #3b82f6;--accent-hover: #60a5fa;--accent-light: #1e3a8a;--accent-lighter: #1e40af;--success: #10b981;--success-light: #064e3b;--warning: #f59e0b;--warning-light: #78350f;--error: #ef4444;--error-light: #7f1d1d;--info: #3b82f6;--info-light: #1e3a8a;--border-color: #334155;--border-light: #1e293b;--border-dark: #475569;--shadow-color: rgba(0, 0, 0, .2);--shadow-color-strong: rgba(0, 0, 0, .4);--card-bg: #1e293b;--card-border: #334155;--input-bg: #334155;--input-border: #475569;--toggle-bg: #334155;--toggle-thumb: #1e293b;--toggle-icon: #f1f5f9;--shadow-xs: 0 1px 2px 0 var(--shadow-color);--shadow-sm: 0 1px 3px 0 var(--shadow-color), 0 1px 2px -1px var(--shadow-color);--shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -2px var(--shadow-color);--shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -4px var(--shadow-color);--shadow-xl: 0 20px 25px -5px var(--shadow-color), 0 8px 10px -6px var(--shadow-color);--shadow-inner: inset 0 2px 4px 0 var(--shadow-color);--gradient-primary: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-hover) 100%);--gradient-secondary: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);--mobile-header-height: 64px;--mobile-nav-height: 56px;--mobile-safe-area-top: env(safe-area-inset-top);--mobile-safe-area-bottom: env(safe-area-inset-bottom);--mobile-safe-area-left: env(safe-area-inset-left);--mobile-safe-area-right: env(safe-area-inset-right)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;height:100%;-webkit-overflow-scrolling:touch}body{font-family:-apple-system,BlinkMacSystemFont,Inter,SF Pro Display,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary);transition:background-color .3s cubic-bezier(.4,0,.2,1),color .3s cubic-bezier(.4,0,.2,1);overflow-x:hidden;min-height:100vh;font-feature-settings:"kern" 1,"liga" 1,"calt" 1;padding-left:var(--mobile-safe-area-left);padding-right:var(--mobile-safe-area-right)}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;margin-bottom:.5em;color:var(--text-primary);letter-spacing:-.025em;font-feature-settings:"kern" 1,"liga" 1}h1{font-size:1.875rem;font-weight:700;letter-spacing:-.04em}h2{font-size:1.5rem;font-weight:600;letter-spacing:-.03em}h3{font-size:1.25rem;font-weight:600;letter-spacing:-.025em}h4{font-size:1.125rem;font-weight:600;letter-spacing:-.02em}h5{font-size:1rem;font-weight:500;letter-spacing:-.015em}h6{font-size:.875rem;font-weight:500;letter-spacing:-.01em}p{margin-bottom:1em;line-height:1.6}a{color:var(--accent-primary);text-decoration:none;transition:color .2s ease;min-height:44px;display:inline-flex;align-items:center}a:hover{color:var(--accent-hover)}a:focus{outline:2px solid var(--accent-primary);outline-offset:2px;border-radius:4px}button{font-family:inherit;cursor:pointer;transition:all .2s ease;border:none;background:none;min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center}button:focus{outline:2px solid var(--accent-primary);outline-offset:2px}button:disabled{opacity:.5;cursor:not-allowed}input,textarea,select{font-family:inherit;font-size:1rem;line-height:1.5;color:var(--text-primary);background:var(--input-bg);border:1px solid var(--input-border);border-radius:8px;padding:.75rem;transition:all .2s ease;min-height:44px;-webkit-appearance:none;-moz-appearance:none;appearance:none}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-light);font-size:16px}input:hover,textarea:hover,select:hover{border-color:var(--border-dark)}input::placeholder,textarea::placeholder{color:var(--text-quaternary)}.container,.container-sm,.container-lg{max-width:100%;margin:0 auto;padding:0 1rem}.text-xs{font-size:.75rem}.text-sm{font-size:.875rem}.text-base{font-size:1rem}.text-lg{font-size:1.125rem}.text-xl{font-size:1.25rem}.text-2xl{font-size:1.5rem}.text-3xl{font-size:1.875rem}.text-4xl{font-size:2.25rem}.font-light{font-weight:300}.font-normal{font-weight:400}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}.font-extrabold{font-weight:800}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.text-accent{color:var(--accent-primary)}.text-success{color:var(--success)}.text-warning{color:var(--warning)}.text-error{color:var(--error)}.m-0{margin:0}.m-1{margin:.25rem}.m-2{margin:.5rem}.m-3{margin:.75rem}.m-4{margin:1rem}.m-6{margin:1.5rem}.m-8{margin:2rem}.p-0{padding:0}.p-1{padding:.25rem}.p-2{padding:.5rem}.p-3{padding:.75rem}.p-4{padding:1rem}.p-6{padding:1.5rem}.p-8{padding:2rem}.flex-col{flex-direction:column}.flex-row{flex-direction:row}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.justify-start{justify-content:flex-start}.justify-end{justify-content:flex-end}.flex-wrap{flex-wrap:wrap}.flex-1{flex:1}.grid{display:grid}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.gap-6{gap:1.5rem}.gap-8{gap:2rem}.border{border:1px solid var(--border-color)}.border-light{border:1px solid var(--border-light)}.border-dark{border:1px solid var(--border-dark)}.rounded{border-radius:.375rem}.rounded-md{border-radius:.5rem}.rounded-lg{border-radius:.75rem}.rounded-xl{border-radius:1rem}.rounded-full{border-radius:9999px}.shadow-xs{box-shadow:var(--shadow-xs)}.shadow-sm{box-shadow:var(--shadow-sm)}.shadow-md{box-shadow:var(--shadow-md)}.shadow-lg{box-shadow:var(--shadow-lg)}.shadow-xl{box-shadow:var(--shadow-xl)}.shadow-inner{box-shadow:var(--shadow-inner)}.bg-primary{background-color:var(--bg-primary)}.bg-secondary{background-color:var(--bg-secondary)}.bg-tertiary{background-color:var(--bg-tertiary)}.bg-accent{background-color:var(--accent-primary)}.bg-success{background-color:var(--success)}.bg-warning{background-color:var(--warning)}.bg-error{background-color:var(--error)}@keyframes slideLeft{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes slideRight{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fade-in{animation:fadeIn .5s ease-out}.animate-slide-up{animation:slideUp .5s ease-out}.animate-slide-down{animation:slideDown .5s ease-out}.animate-slide-left{animation:slideLeft .5s ease-out}.animate-slide-right{animation:slideRight .5s ease-out}.animate-scale-in{animation:scaleIn .3s ease-out}.animate-pulse{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}@media (min-width: 576px){.container,.container-sm{max-width:540px;padding:0 1.5rem}}@media (min-width: 768px){html{font-size:15px}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}.container,.container-sm,.container-lg{max-width:720px;padding:0 2rem}}@media (min-width: 992px){html{font-size:16px}h1{font-size:3rem}h2{font-size:2.25rem}h3{font-size:1.875rem}h4{font-size:1.5rem}.container,.container-lg{max-width:960px}}@media (min-width: 1200px){.container,.container-lg{max-width:1140px}}@media (min-width: 1400px){.container-lg{max-width:1320px}}.mobile-only{display:block}.desktop-only{display:none}@media (min-width: 768px){.mobile-only{display:none}.desktop-only{display:block}}.touch-target{min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center}@media print{*{background:transparent!important;color:#000!important;box-shadow:none!important;text-shadow:none!important}a,a:visited{text-decoration:underline}a[href]:after{content:" (" attr(href) ")"}h1,h2,h3{page-break-after:avoid}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px;border-radius:4px}::selection{background-color:var(--accent-light);color:var(--accent-primary)}::-moz-selection{background-color:var(--accent-light);color:var(--accent-primary)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--border-dark)}#root{min-height:100vh;background:var(--bg-primary);padding-left:var(--mobile-safe-area-left);padding-right:var(--mobile-safe-area-right)}.main-layout{min-height:100vh;display:flex;flex-direction:column;padding-top:var(--mobile-safe-area-top);padding-bottom:var(--mobile-safe-area-bottom)}.reading-layout{min-height:100vh;display:flex;flex-direction:column;background:var(--bg-primary);padding-top:var(--mobile-safe-area-top);padding-bottom:var(--mobile-safe-area-bottom)}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);padding:1rem;padding-top:max(1rem,var(--mobile-safe-area-top));padding-bottom:max(1rem,var(--mobile-safe-area-bottom))}.welcome-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 100%);padding:1rem;padding-top:max(1rem,var(--mobile-safe-area-top));padding-bottom:max(1rem,var(--mobile-safe-area-bottom))}.welcome-card{background:var(--card-bg);padding:2.5rem 2rem;border-radius:20px;box-shadow:var(--shadow-xl);max-width:100%;width:100%;text-align:center;border:1px solid var(--border-color);animation:slideUp .6s ease-out}.welcome-title{font-size:2.25rem;font-weight:800;margin-bottom:1rem;background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-hover) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em;line-height:1.1}.welcome-subtitle{font-size:1.125rem;color:var(--text-secondary);margin-bottom:1.5rem;font-weight:500;letter-spacing:-.01em}.welcome-description{color:var(--text-tertiary);margin-bottom:2.5rem;line-height:1.7;font-size:1rem;max-width:100%;margin-left:auto;margin-right:auto}.welcome-button{background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-hover) 100%);color:#fff;padding:1rem 2rem;font-size:1rem;font-weight:600;border-radius:50px;transition:all .3s ease;display:inline-flex;align-items:center;gap:.75rem;box-shadow:var(--shadow-md);border:none;cursor:pointer;min-height:48px;width:100%;justify-content:center}.welcome-button:hover{transform:translateY(-2px) scale(1.02);box-shadow:var(--shadow-lg)}.welcome-button:active{transform:translateY(-1px) scale(1.01)}.form-container{min-height:100vh;display:flex;flex-direction:column;background:var(--bg-primary);padding-top:var(--mobile-safe-area-top);padding-bottom:var(--mobile-safe-area-bottom)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:50vh;background:var(--bg-primary);padding:2rem 1rem;text-align:center}.loading-text{font-size:1rem;color:var(--text-secondary);font-weight:500}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;text-align:center;padding:2rem 1rem}.empty-state p{font-size:.875rem;color:var(--text-secondary);margin:0;line-height:1.6;max-width:300px}.error-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:50vh;text-align:center;padding:2rem 1rem}.error-icon{font-size:3rem;color:var(--error);margin-bottom:1rem}.error-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin:0 0 .5rem}.error-message{font-size:1rem;color:var(--text-secondary);margin:0 0 2rem;line-height:1.6;max-width:400px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.875rem;font-weight:500;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:all .2s ease;text-decoration:none;min-height:44px;white-space:nowrap}.btn:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.btn-primary{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--border-color)}.btn-secondary:hover{background:var(--bg-tertiary);border-color:var(--border-dark)}.btn-outline{background:transparent;color:var(--accent-primary);border-color:var(--accent-primary)}.btn-outline:hover{background:var(--accent-primary);color:#fff}.btn-danger{background:var(--error);color:#fff;border-color:var(--error)}.btn-danger:hover{background:#dc2626;border-color:#dc2626;transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn-sm{padding:.5rem 1rem;font-size:.8125rem;min-height:36px}.btn-lg{padding:1rem 2rem;font-size:1rem;min-height:48px}.form-group{margin-bottom:1rem}.form-label{display:block;font-weight:500;color:var(--text-primary);margin-bottom:.5rem;font-size:.875rem}.form-textarea{min-height:120px;resize:vertical}.form-hint{font-size:.75rem;color:var(--text-secondary);margin-top:.25rem}.form-error{font-size:.75rem;color:var(--error);margin-top:.25rem;font-weight:500}.card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:1.5rem;box-shadow:var(--shadow-sm);transition:all .2s ease}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.card-header{margin-bottom:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border-light)}.card-body{margin-bottom:1rem}.card-footer{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-light)}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem;animation:fadeIn .3s ease-out}.modal{background:var(--card-bg);border-radius:12px;box-shadow:var(--shadow-xl);max-width:100%;width:100%;max-height:90vh;overflow-y:auto;animation:scaleIn .3s ease-out}.modal-header{padding:1.5rem 1.5rem 1rem;border-bottom:1px solid var(--border-color)}.modal-title{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin:0}.modal-body{padding:1.5rem}.modal-footer{padding:1rem 1.5rem 1.5rem;border-top:1px solid var(--border-color);display:flex;gap:1rem;justify-content:flex-end;flex-wrap:wrap}.toast{position:fixed;top:1rem;right:1rem;background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;padding:1rem;box-shadow:var(--shadow-lg);z-index:1100;min-width:280px;max-width:calc(100vw - 2rem);animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.toast-success{border-color:var(--success);background:var(--success-light)}[data-theme=dark] .toast-success{background:#064e3b;border-color:#059669}.toast-error{border-color:var(--error);background:var(--error-light)}[data-theme=dark] .toast-error{background:#7f1d1d;border-color:#dc2626}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--text-secondary)}.mt-1{margin-top:.25rem}.mt-2{margin-top:.5rem}.mt-3{margin-top:.75rem}.mt-4{margin-top:1rem}.mt-5{margin-top:1.25rem}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:.75rem}.mb-4{margin-bottom:1rem}.mb-5{margin-bottom:1.25rem}.flex{display:flex}.flex-column{flex-direction:column}.align-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:.25rem}.gap-2{gap:.5rem}.gap-3{gap:.75rem}.gap-4{gap:1rem}.gap-5{gap:1.25rem}.hide-mobile{display:none}.show-mobile{display:block}@media (min-width: 768px){.welcome-card{padding:3rem 2.5rem;max-width:500px}.welcome-title{font-size:2.75rem}.welcome-subtitle{font-size:1.25rem}.welcome-description{font-size:1.125rem;max-width:400px}.welcome-button{padding:1.125rem 2.5rem;font-size:1.125rem;width:auto}.modal{max-width:500px}.modal-footer{flex-wrap:nowrap}.hide-mobile{display:block}.show-mobile{display:none}}@media (min-width: 992px){.welcome-card{padding:4rem 3rem;max-width:560px}.welcome-title{font-size:3.5rem}.welcome-subtitle{font-size:1.375rem}.modal{max-width:600px}}.fade-in{animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.slide-up{animation:slideUp .5s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media print{.no-print{display:none!important}.main-layout,.reading-layout{min-height:auto}.card{box-shadow:none;border:1px solid #ccc}}.home-page{min-height:100vh;background:var(--bg-primary);display:flex;flex-direction:column;padding-top:var(--mobile-safe-area-top);padding-bottom:var(--mobile-safe-area-bottom)}.top-navbar{background:var(--card-bg);border-bottom:1px solid 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