:root{--bg-page: #f9fafb;--bg-card: #ffffff;--text-main: #111827;--text-muted: #4b5563;--text-subtle: #9ca3af;--border-color: #e5e7eb;--border-hover: #d1d5db;--btn-primary-bg: #111827;--btn-primary-text: #ffffff;--btn-primary-hover: #1f2937;--btn-secondary-bg: #ffffff;--btn-secondary-text: #374151;--btn-secondary-border: #d1d5db;--btn-secondary-hover: #f3f4f6;--radius: 6px;--font-family: "Inter", system-ui, -apple-system, sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-family);background-color:var(--bg-page);color:var(--text-main);min-height:100vh;-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;min-height:100vh}.site-header{background:var(--bg-card);border-bottom:1px solid var(--border-color);padding:1rem 2rem}.header-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.header-brand{display:flex;flex-direction:column}.header-title{font-size:1.125rem;font-weight:600;color:var(--text-main);letter-spacing:-.01em}.header-subtitle{font-size:.825rem;color:var(--text-muted);font-weight:400}.header-actions{display:flex;align-items:center;gap:.5rem}.btn{display:inline-flex;align-items:center;gap:.45rem;padding:.5rem .9rem;font-size:.875rem;font-weight:500;border-radius:var(--radius);cursor:pointer;text-decoration:none;transition:all .15s ease;font-family:inherit}.btn-primary{background:var(--btn-primary-bg);color:var(--btn-primary-text);border:1px solid var(--btn-primary-bg)}.btn-primary:hover{background:var(--btn-primary-hover);border-color:var(--btn-primary-hover)}.btn-secondary{background:var(--btn-secondary-bg);color:var(--btn-secondary-text);border:1px solid var(--btn-secondary-border)}.btn-secondary:hover{background:var(--btn-secondary-hover);border-color:#9ca3af}.main-wrapper{flex:1;max-width:1100px;width:100%;margin:0 auto;padding:1.5rem 2rem;display:flex;flex-direction:column;gap:1rem}.viewer-container{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);height:calc(100vh - 160px);min-height:650px;overflow:hidden;box-shadow:0 1px 3px #0000000d}.pdf-element{width:100%;height:100%;border:none}.fallback-box{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:3rem 1.5rem;text-align:center;gap:1rem;background:#fff}.fallback-heading{font-size:1.15rem;font-weight:600;color:var(--text-main)}.fallback-text{font-size:.9rem;color:var(--text-muted);max-width:400px}.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:#111827;color:#fff;padding:.6rem 1rem;border-radius:var(--radius);font-size:.85rem;font-weight:500;box-shadow:0 4px 6px -1px #0000001a;animation:fadeIn .2s ease-in-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.footer{text-align:center;padding:1rem;font-size:.8rem;color:var(--text-subtle);border-top:1px solid var(--border-color);background:var(--bg-card)}@media (max-width: 640px){.site-header{padding:.85rem 1rem}.main-wrapper{padding:1rem}.btn-label{display:none}.btn{padding:.5rem .65rem}}@media print{.site-header,.footer,.toast{display:none!important}.main-wrapper,.viewer-container{padding:0!important;margin:0!important;border:none!important;box-shadow:none!important}}