:root{--bg-color: #0f0f0f;--text-primary: #e0e0e0;--text-secondary: #a0a0a0;--accent: #d4af37;--header-height: 80px;--footer-height: 60px;--font-main: "Helvetica Neue", Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;overflow-x:hidden}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw}.app-header{height:var(--header-height);display:flex;align-items:center;justify-content:center;border-bottom:1px solid rgba(255,255,255,.05);background:#0f0f0ff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10}.app-header h1{font-size:1.5rem;letter-spacing:.2em;font-weight:300;color:var(--text-primary);text-transform:uppercase;background:linear-gradient(90deg,#fff,#888);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.main-content{flex:1;display:flex;justify-content:center;align-items:center;padding:20px;position:relative;overflow:hidden}.pdf-container{width:100%;height:100%;max-width:1200px;position:relative;box-shadow:0 20px 50px #00000080;border-radius:8px;background-color:#1a1a1a;display:flex;flex-direction:column}.pdf-frame{width:100%;height:100%;border:none;border-radius:8px}.loading-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#0f0f0f;z-index:5;color:var(--text-secondary)}.spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:15px}@keyframes spin{to{transform:rotate(360deg)}}.mobile-hint{display:none;padding:20px;text-align:center;color:var(--text-secondary)}.download-btn{display:inline-block;margin-top:10px;padding:10px 20px;border:1px solid var(--accent);color:var(--accent);text-decoration:none;border-radius:4px;transition:all .3s ease}.download-btn:hover{background:var(--accent);color:#000}.app-footer{height:var(--footer-height);display:flex;align-items:center;justify-content:center;font-size:.8rem;color:var(--text-secondary);border-top:1px solid rgba(255,255,255,.05)}@media(max-width:768px){.app-header h1{font-size:1.2rem}.main-content{padding:10px}.pdf-container{height:100%}.pdf-frame{display:block}}