:root{
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:#17191d;background:#eef0f3;--blue:#1769e0;--border:#d7dbe1;--shadow:0 12px 34px rgba(20,24,32,.14)
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:#eef0f3}
body{min-height:100vh}
button,input{font:inherit}
.app{min-height:100vh;display:flex;flex-direction:column}
.toolbar{position:sticky;top:0;z-index:50;min-height:62px;padding:10px 18px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:16px;backdrop-filter:blur(10px)}
.brand{font-weight:800;white-space:nowrap}.filename{font-size:12px;color:#737982;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.actions{display:flex;gap:8px;align-items:center}
.button{border:1px solid transparent;border-radius:10px;min-height:40px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;gap:7px;font-weight:750;font-size:13px;cursor:pointer;text-decoration:none;user-select:none}
.button.primary{background:var(--blue);color:#fff}.button.primary:hover:not(:disabled){background:#0f5bc8}.button.secondary{background:#fff;color:#23262b;border-color:#cfd4db}.button.secondary:hover{background:#f7f8f9}.button:disabled,.button.disabled{opacity:.42;pointer-events:none}
.drop-screen{flex:1;display:grid;place-items:center;padding:28px}.drop-zone{width:min(720px,100%);min-height:410px;border:2px dashed #b4bac3;border-radius:22px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px;cursor:pointer;box-shadow:0 8px 30px rgba(30,35,45,.05);transition:.15s}.drop-zone:hover,.drop-zone.dragover{border-color:var(--blue);background:#f9fbff;transform:translateY(-1px)}
.pdf-icon{width:74px;height:92px;border:1px solid #cdd2da;border-radius:10px;display:grid;place-items:center;font-weight:900;color:#656c76;background:#fff;box-shadow:0 8px 24px rgba(0,0,0,.06);margin-bottom:18px}.drop-zone h1{font-size:26px;margin:0 0 8px}.drop-zone p{color:#737982;margin:0 0 22px}.drop-zone small{margin-top:14px;color:#969ca5;font-size:11px}
.viewer{flex:1;min-height:0}.viewer-hint{position:sticky;top:62px;z-index:40;text-align:center;padding:8px 14px;background:#25282d;color:#fff;font-size:11px}.pages{padding:30px 18px 70px;display:flex;flex-direction:column;align-items:center;gap:26px}.page-wrap{position:relative;background:#fff;box-shadow:var(--shadow);line-height:0;flex:0 0 auto}.page-wrap canvas{display:block;width:100%;height:100%}.overlay{position:absolute;inset:0;overflow:hidden;line-height:normal}
.placed{position:absolute;transform-origin:center center;cursor:move;user-select:none;touch-action:none;outline:1.5px solid transparent}.placed img{width:100%;height:100%;display:block;object-fit:fill;pointer-events:none;user-select:none}.placed.selected{outline-color:var(--blue);z-index:10}.handle{display:none;position:absolute;background:#fff;border:2px solid var(--blue);z-index:3}.placed.selected .handle,.placed.selected .rotate-line{display:block}.resize{width:14px;height:14px;right:-8px;bottom:-8px;border-radius:3px;cursor:nwse-resize}.rotate{width:16px;height:16px;left:calc(50% - 8px);top:-38px;border-radius:50%;cursor:grab}.rotate-line{display:none;position:absolute;left:calc(50% - 1px);top:-22px;width:2px;height:22px;background:var(--blue)}.delete{display:none;position:absolute;right:-12px;top:-12px;width:24px;height:24px;border-radius:50%;border:0;background:#17191d;color:#fff;font-size:16px;line-height:22px;text-align:center;cursor:pointer;z-index:4}.placed.selected .delete{display:block}
.page-number{position:absolute;right:8px;bottom:-22px;font-size:10px;color:#858b94;line-height:1}
.credit{position:fixed;left:50%;bottom:7px;transform:translateX(-50%);z-index:60;padding:4px 8px;border-radius:8px;background:rgba(238,240,243,.86);font-size:10px;color:#8a9099;backdrop-filter:blur(6px)}.credit span{color:#c33333}.credit a{color:inherit;text-decoration:none;border-bottom:1px dotted #aaa}.credit a:hover{color:#333}
.hidden-input{position:fixed;left:-9999px;width:1px;height:1px;opacity:0}.toast{position:fixed;left:50%;bottom:36px;z-index:100;transform:translate(-50%,12px);opacity:0;pointer-events:none;transition:.18s;background:#17191d;color:#fff;padding:10px 14px;border-radius:10px;font-size:12px;box-shadow:0 12px 30px rgba(0,0,0,.22)}.toast.show{opacity:1;transform:translate(-50%,0)}.toast.error{background:#92231b}
@media(max-width:700px){.toolbar{padding:9px 10px;gap:8px;flex-wrap:wrap}.brand{font-size:14px}.filename{order:3;flex-basis:100%}.actions{margin-left:auto}.button{min-height:36px;padding:0 10px;font-size:12px}.viewer-hint{top:91px}.pages{padding-inline:10px}.drop-zone{min-height:330px;padding:24px}.drop-zone h1{font-size:22px}.credit{white-space:nowrap}}