/* Modern minimal PDF viewer styles */
.viewer-container{max-width:1100px;margin:28px auto;background:#fff;border-radius:8px;box-shadow:0 6px 18px rgba(0,0,0,0.08);overflow:hidden}
.viewer-toolbar{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:linear-gradient(90deg,#f8fafc,#fff)}
.viewer-title{font-weight:600;color:#1f2937}
.viewer-controls{display:flex;gap:8px;align-items:center}
.viewer-controls button,.viewer-controls a{background:#eef2f7;border:0;padding:6px 10px;border-radius:6px;cursor:pointer;color:#111;text-decoration:none}
.viewer-body{display:flex;justify-content:center;align-items:center;padding:20px;background:#f6f8fa}
.viewer-body.scroll-mode{align-items:flex-start}
/* canvas should scale to container width for readable pages */
#pdf-canvas{width:100%;height:auto;max-width:1100px;box-shadow:0 2px 8px rgba(0,0,0,0.06);border-radius:4px}
.page-canvas{width:100%;height:auto;max-width:1100px;display:block;margin:12px auto;box-shadow:0 2px 6px rgba(0,0,0,0.06);border-radius:4px}
.viewer-body{max-height:calc(100vh - 160px);overflow:auto}
.viewer-toolbar .mode-toggle{padding:6px 10px;border-radius:6px;background:#fff;border:1px solid #e6eef6}
.viewer-error{padding:30px;color:#b91c1c}
@media (max-width:720px){.viewer-toolbar{flex-direction:column;gap:8px}.viewer-controls{flex-wrap:wrap}}