.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;font-size:.875rem;transition:all var(--transition-fast);cursor:pointer;border:1px solid transparent;gap:.5rem}.btn:disabled{opacity:.7;cursor:not-allowed}.btn-primary:hover:not(:disabled){background-color:var(--color-accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--color-surface);color:var(--color-text-main);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background-color:var(--color-surface-hover);border-color:var(--color-text-secondary)}.btn-accent:hover:not(:disabled){background-color:var(--color-accent-hover);box-shadow:var(--shadow-md)}.btn-outline{background-color:transparent;border-color:var(--color-primary);color:var(--color-primary)}.btn-outline:hover:not(:disabled){background-color:var(--color-surface-hover);border-color:var(--color-accent);color:var(--color-accent)}.spinner{width:1rem;height:1rem;border:2px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.input-group{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}.input-label{font-size:.875rem;font-weight:500;color:var(--color-text-main)}.input-field{padding:.75rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-md);font-family:inherit;font-size:1rem;color:var(--color-text-main);background-color:var(--color-surface);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input-field:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px #0ea5e91a}[data-theme=dark] .input-field:focus{box-shadow:0 0 0 3px #0ea5e933}.input-field::placeholder{color:var(--color-text-muted)}.input-field.input-error{border-color:var(--color-error)}.input-field.input-error:focus{box-shadow:0 0 0 3px #ef44441a}[data-theme=dark] .input-field.input-error:focus{box-shadow:0 0 0 3px #ef444433}.input-error-message{font-size:.75rem;color:var(--color-error)}.layout{display:flex;height:100vh;background-color:var(--color-background)}.sidebar{width:250px;background-color:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column}.sidebar-header{padding:1.5rem;border-bottom:1px solid var(--color-border);display:flex;flex-direction:column;align-items:center}.sidebar-header .logo{height:128px;margin-bottom:.5rem;object-fit:contain}.sidebar-header h1{font-size:1.25rem;font-weight:700;color:var(--color-text-main);margin:0;text-align:center}.sidebar-nav{flex:1;padding:1.5rem 1rem;display:flex;flex-direction:column;gap:.5rem}.nav-item{padding:.75rem 1rem;border-radius:var(--radius-md);color:var(--color-text-secondary);font-weight:500;transition:all var(--transition-fast)}.nav-item:hover{background-color:var(--color-surface-hover);color:var(--color-text-main)}.nav-item.active{background-color:var(--color-accent);color:#fff}.sidebar-footer{padding:1.5rem;border-top:1px solid var(--color-border)}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden}.top-bar{height:64px;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;padding:0 2rem}.breadcrumbs{display:flex;gap:.5rem;color:var(--color-text-secondary);font-size:.875rem}.breadcrumb-item:after{content:"/";margin-left:.5rem;color:var(--color-text-muted)}.breadcrumb-item:last-child:after{content:""}.user-profile{display:flex;align-items:center;gap:1rem}.avatar{width:32px;height:32px;background-color:var(--color-accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem}.content-area{flex:1;overflow-y:auto;padding:2rem}:root{--color-primary: #0f172a;--color-primary-light: #334155;--color-accent: #0ea5e9;--color-accent-hover: #0284c7;--color-background: #f8fafc;--color-surface: #ffffff;--color-surface-hover: #f1f5f9;--color-text-main: #0f172a;--color-text-secondary: #64748b;--color-text-muted: #94a3b8;--color-border: #e2e8f0;--color-error: #ef4444;--color-success: #10b981;--font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;--font-serif: "Merriweather", serif;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--transition-fast: .15s ease-in-out;--transition-normal: .3s ease-in-out}[data-theme=dark]{--color-background: #0f172a;--color-surface: #1e293b;--color-surface-hover: #334155;--color-text-main: #f8fafc;--color-text-secondary: #cbd5e1;--color-text-muted: #64748b;--color-border: #334155;--color-primary: #f8fafc;--color-primary-light: #cbd5e1}@media (prefers-color-scheme: dark){:root:not([data-theme]){--color-background: #0f172a;--color-surface: #1e293b;--color-surface-hover: #334155;--color-text-main: #f8fafc;--color-text-secondary: #cbd5e1;--color-text-muted: #64748b;--color-border: #334155;--color-primary: #f8fafc;--color-primary-light: #cbd5e1}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-background);color:var(--color-text-main);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-weight:500;transition:background-color var(--transition-fast)}.btn-primary{background-color:var(--color-accent);color:#fff}.btn-primary:hover{background-color:var(--color-accent-hover)}.btn-accent{background-color:var(--color-accent);color:#fff}.btn-accent:hover{background-color:var(--color-accent-hover)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn var(--transition-normal) forwards}.page-transition{animation:fadeIn var(--transition-normal) ease-out}