:root{--color-primary: hsl(210, 100%, 56%);--color-primary-light: hsl(210, 100%, 65%);--color-primary-dark: hsl(210, 100%, 45%);--color-primary-gradient: linear-gradient(135deg, hsl(210, 100%, 56%) 0%, hsl(195, 100%, 50%) 100%);--color-secondary: hsl(280, 85%, 60%);--color-secondary-light: hsl(280, 85%, 70%);--color-accent: hsl(45, 100%, 60%);--color-success: hsl(145, 65%, 55%);--color-warning: hsl(35, 95%, 60%);--color-error: hsl(355, 85%, 60%);--color-bg: hsl(210, 40%, 98%);--color-bg-secondary: hsl(210, 30%, 96%);--color-surface: hsl(0, 0%, 100%);--color-surface-hover: hsl(210, 40%, 99%);--color-border: hsl(210, 20%, 90%);--color-border-light: hsl(210, 20%, 95%);--color-text-primary: hsl(210, 20%, 15%);--color-text-secondary: hsl(210, 15%, 45%);--color-text-tertiary: hsl(210, 10%, 60%);--color-text-inverse: hsl(0, 0%, 100%);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px rgba(0, 0, 0, .05), 0 2px 4px rgba(0, 0, 0, .03);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .08), 0 4px 6px rgba(0, 0, 0, .04);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .1), 0 10px 10px rgba(0, 0, 0, .04);--shadow-glow: 0 0 20px rgba(33, 150, 243, .3);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.6;color:var(--color-text-primary);background:var(--color-bg);min-height:100vh}#app{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;color:var(--color-text-primary)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-base)}p{margin-bottom:var(--spacing-md);color:var(--color-text-secondary)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.container-sm{max-width:600px}.container-lg{max-width:1400px}.header{background:var(--color-surface);border-bottom:1px solid var(--color-border-light);padding:var(--spacing-lg) 0;box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-xl);font-weight:700;color:var(--color-primary);text-decoration:none;transition:transform var(--transition-fast)}.logo:hover{transform:scale(1.05)}.logo-icon{width:32px;height:32px;background:var(--color-primary-gradient);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}.nav-actions{display:flex;gap:var(--spacing-md);align-items:center}.user-info{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--color-text-secondary);font-size:var(--font-size-sm)}.user-avatar{width:36px;height:36px;border-radius:var(--radius-full);background:var(--color-primary-gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:var(--font-size-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--font-size-base);font-weight:500;font-family:var(--font-family);border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);text-decoration:none;white-space:nowrap;position:relative;overflow:hidden}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary-gradient);color:var(--color-text-inverse);box-shadow:var(--shadow-md)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--color-surface);color:var(--color-text-primary);border:2px solid var(--color-border)}.btn-secondary:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary);background:var(--color-surface-hover)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--color-bg-secondary);color:var(--color-text-primary)}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:var(--font-size-sm)}.btn-lg{padding:var(--spacing-md) var(--spacing-xl);font-size:var(--font-size-lg)}.form-group{margin-bottom:var(--spacing-lg)}.form-label{display:block;margin-bottom:var(--spacing-xs);font-weight:500;color:var(--color-text-primary);font-size:var(--font-size-sm)}.form-input,.form-textarea,.form-select{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-base);font-family:var(--font-family);color:var(--color-text-primary);background:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-md);transition:all var(--transition-base)}.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2196f31a}.form-textarea{resize:vertical;min-height:100px}.form-helper{margin-top:var(--spacing-xs);font-size:var(--font-size-xs);color:var(--color-text-tertiary)}.form-error{color:var(--color-error);font-size:var(--font-size-xs);margin-top:var(--spacing-xs)}.card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-md);transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-lg)}.card-header{margin-bottom:var(--spacing-lg)}.card-title{font-size:var(--font-size-2xl);font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-xs)}.card-subtitle{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.card-body{margin-bottom:var(--spacing-lg)}.card-footer{padding-top:var(--spacing-lg);border-top:1px solid var(--color-border-light);display:flex;gap:var(--spacing-md);justify-content:flex-end}.tabs{border-bottom:2px solid var(--color-border-light);margin-bottom:var(--spacing-xl)}.tabs-list{display:flex;gap:var(--spacing-md);list-style:none;overflow-x:auto;-webkit-overflow-scrolling:touch}.tab-button{padding:var(--spacing-md) var(--spacing-lg);background:transparent;border:none;border-bottom:3px solid transparent;color:var(--color-text-secondary);font-size:var(--font-size-base);font-weight:500;font-family:var(--font-family);cursor:pointer;transition:all var(--transition-base);white-space:nowrap;position:relative;margin-bottom:-2px}.tab-button:hover{color:var(--color-text-primary);background:var(--color-bg-secondary)}.tab-button.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.tab-icon{margin-right:var(--spacing-xs)}.qr-display{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--spacing-2xl);text-align:center;box-shadow:var(--shadow-md);border:2px solid var(--color-border-light)}.qr-canvas{max-width:100%;height:auto;border-radius:var(--radius-md);margin:0 auto;display:block}.qr-placeholder{width:300px;height:300px;margin:0 auto;background:var(--color-bg-secondary);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--color-text-tertiary);font-size:var(--font-size-sm);border:2px dashed var(--color-border)}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);background:linear-gradient(135deg,#f0f7ff,#e5f9ff)}.auth-card{width:100%;max-width:450px;background:var(--color-surface);border-radius:var(--radius-xl);padding:var(--spacing-2xl);box-shadow:var(--shadow-xl)}.auth-header{text-align:center;margin-bottom:var(--spacing-2xl)}.auth-logo{width:64px;height:64px;margin:0 auto var(--spacing-lg);background:var(--color-primary-gradient);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:#fff;font-size:var(--font-size-2xl);font-weight:700}.auth-title{font-size:var(--font-size-3xl);margin-bottom:var(--spacing-xs)}.auth-subtitle{color:var(--color-text-secondary);font-size:var(--font-size-base)}.auth-divider{text-align:center;margin:var(--spacing-xl) 0;position:relative}.auth-divider:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:var(--color-border)}.auth-divider span{background:var(--color-surface);padding:0 var(--spacing-md);color:var(--color-text-tertiary);font-size:var(--font-size-sm);position:relative}.auth-footer{text-align:center;margin-top:var(--spacing-xl);color:var(--color-text-secondary);font-size:var(--font-size-sm)}.auth-link{color:var(--color-primary);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}.auth-link:hover{color:var(--color-primary-dark);text-decoration:underline}.main-content{flex:1;padding:var(--spacing-2xl) 0}.page-header{margin-bottom:var(--spacing-2xl)}.page-title{font-size:var(--font-size-3xl);margin-bottom:var(--spacing-sm)}.page-description{font-size:var(--font-size-lg);color:var(--color-text-secondary)}.grid{display:grid;gap:var(--spacing-xl)}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.hidden{display:none!important}.text-center{text-align:center}.text-right{text-align:right}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fadeIn{animation:fadeIn var(--transition-base) ease-out}.animate-slideIn{animation:slideIn var(--transition-base) ease-out}@media(max-width:768px){:root{--font-size-4xl: 2rem;--font-size-3xl: 1.75rem;--font-size-2xl: 1.375rem}.header-content{flex-direction:column;gap:var(--spacing-md)}.nav-actions{width:100%;justify-content:center}.card{padding:var(--spacing-lg)}.auth-card{padding:var(--spacing-xl)}.tabs-list{padding-bottom:var(--spacing-xs)}.grid-2{grid-template-columns:1fr}}.loading{display:inline-block;width:20px;height:20px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:linear-gradient(90deg,var(--color-bg-secondary) 0%,var(--color-border-light) 50%,var(--color-bg-secondary) 100%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:var(--radius-md)}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:var(--color-surface);width:90%;max-width:800px;max-height:85vh;border-radius:var(--radius-xl);display:flex;flex-direction:column;box-shadow:var(--shadow-xl);overflow:hidden}.modal-header{padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--color-border-light);display:flex;justify-content:space-between;align-items:center}.modal-title{font-size:var(--font-size-xl)}.history-list{flex:1;overflow-y:auto;padding:var(--spacing-xl);background:var(--color-bg-secondary)}.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing-lg)}.history-item{padding:var(--spacing-md)!important;display:flex;flex-direction:column;gap:var(--spacing-sm);background:var(--color-surface);transition:transform var(--transition-base)}.history-item:hover{transform:translateY(-4px)}.history-preview{width:100%;aspect-ratio:1;background:#fff;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--color-border-light)}.history-preview img{width:100%;height:100%;object-fit:contain}.history-info{display:flex;justify-content:space-between;align-items:center}.history-type{font-size:var(--font-size-xs);font-weight:700;color:var(--color-primary);background:#2196f31a;padding:2px 8px;border-radius:var(--radius-full)}.history-date{font-size:var(--font-size-xs);color:var(--color-text-tertiary)}.history-actions{display:flex;gap:var(--spacing-xs);margin-top:auto}.history-actions .btn{flex:1;font-size:var(--font-size-xs);padding:var(--spacing-xs)}.py-lg{padding-top:var(--spacing-lg);padding-bottom:var(--spacing-lg)}.py-xl{padding-top:var(--spacing-xl);padding-bottom:var(--spacing-xl)}