:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-light: #dbeafe;--color-success: #059669;--color-warning: #d97706;--color-error: #dc2626;--color-bg: #ffffff;--color-bg-secondary: #f8fafc;--color-bg-tertiary: #f1f5f9;--color-text: #0f172a;--color-text-secondary: #475569;--color-text-muted: #94a3b8;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--color-certified: #059669;--color-certified-bg: #ecfdf5;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--font-family: "Inter", -apple-system, BlinkMacSystemFont, 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;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--transition-fast: .15s ease;--transition-base: .2s ease;--sidebar-width: 260px;--header-height: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased}body{font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text);background:var(--color-bg);line-height:1.5}h1,h2,h3,h4{font-weight:600;line-height:1.25}h1{font-size:var(--font-size-2xl)}h2{font-size:var(--font-size-xl)}h3{font-size:var(--font-size-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm);font-weight:500;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-secondary{background:var(--color-bg);color:var(--color-text);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background:var(--color-bg-secondary);border-color:var(--color-border-hover)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--color-bg-secondary)}.btn-icon{padding:var(--space-sm);border-radius:var(--radius-md)}.input{width:100%;padding:var(--space-sm) var(--space-md);font-size:var(--font-size-sm);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);transition:border-color var(--transition-fast)}.input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.input::placeholder{color:var(--color-text-muted)}.form-group{display:flex;flex-direction:column;gap:var(--space-xs)}.form-label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary)}.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.card-header{padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--color-border)}.card-body{padding:var(--space-lg)}.badge{display:inline-flex;align-items:center;gap:var(--space-xs);padding:2px var(--space-sm);font-size:var(--font-size-xs);font-weight:500;border-radius:var(--radius-full)}.badge-certified{background:var(--color-certified-bg);color:var(--color-certified)}.file-item{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast)}.file-item:hover{background:var(--color-bg-secondary)}.file-item.selected{background:var(--color-primary-light)}.file-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--color-bg-tertiary);border-radius:var(--radius-md);flex-shrink:0}.file-info{flex:1;min-width:0}.file-name{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-meta{font-size:var(--font-size-xs);color:var(--color-text-muted)}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--color-bg);border-right:1px solid var(--color-border);display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{padding:var(--space-lg);border-bottom:1px solid var(--color-border)}.sidebar-nav{flex:1;padding:var(--space-md)}.main-content{flex:1;display:flex;flex-direction:column;min-width:0}.header{height:var(--header-height);border-bottom:1px solid var(--color-border);display:flex;align-items:center;padding:0 var(--space-lg);gap:var(--space-md)}.content{flex:1;padding:var(--space-lg);overflow-y:auto}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg-secondary)}.auth-card{width:100%;max-width:400px;margin:var(--space-lg)}.auth-logo{text-align:center;margin-bottom:var(--space-xl)}.auth-form{display:flex;flex-direction:column;gap:var(--space-md)}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-sm{font-size:var(--font-size-sm)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.mt-sm{margin-top:var(--space-sm)}.mt-md{margin-top:var(--space-md)}.mb-md{margin-bottom:var(--space-md)}