:root { --navy:#12294b; --blue:#1968bd; --bg:#eff4f9; --line:#dbe5ef; --text:#1c2c42; --sub:#70829a; --white:#fff; }
* { box-sizing:border-box }
body { margin:0; font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; color:var(--text); background:var(--bg) }
button,input { font:inherit }
button { cursor:pointer }
button:disabled { opacity:.5;cursor:not-allowed }
.button { display:inline-flex;align-items:center;justify-content:center;width:100%;min-height:46px;padding:12px 18px;border-radius:12px;border:1px solid transparent;font-weight:650;transition:background .12s }
.button-primary { color:#fff;background:#1968bd;box-shadow:0 5px 13px #1968bd23 }.button-primary:not(:disabled):hover { background:#13559d }
.button-outline { background:#fff;border-color:#bed1e5;color:#1d5b96 }.button-subtle {background:#f0f4f8;color:#915656}.button-ghost{background:transparent;color:#d4e5ff;border:1px solid #53708c}.button-small{width:auto;min-height:36px;padding:8px 15px;font-size:13px}
.eyebrow { color:#7a90ab;font-size:10px;letter-spacing:1.7px;font-weight:800 }
.topbar {height:70px;padding:0 26px;display:flex;align-items:center;justify-content:space-between;background:var(--navy);color:white}
.logo { display:flex;gap:12px;align-items:center;font-size:17px;font-weight:600;line-height:1.2 }.logo small { display:block;margin-top:4px;color:#96b6d6;font-size:11px;font-weight:400 }.logo .mark { background:#204e81;display:grid;place-items:center;border-radius:10px;height:39px;width:39px;font-size:25px }
.workspace {display:grid;grid-template-columns:322px minmax(0,1fr); min-height:calc(100dvh - 70px)}
.tools {background:#fff;border-right:1px solid var(--line);padding:25px 20px 28px;min-height:100%;overflow:auto}.panel-header h1 {font-size:21px;margin:5px 0 20px;letter-spacing:-.5px}
.upload-button {display:flex;align-items:center;gap:12px;border-radius:12px;background:#e9f3ff;border:1px dashed #86b7e9;padding:13px;cursor:pointer;min-height:68px}.upload-button:hover {background:#dfedfd}.upload-button strong {display:block;font-size:14px}.upload-button small {display:block;font-size:11px;color:#6788a9;margin-top:3px;line-height:1.4}.upload-icon {background:#1968bd;color:#fff;border-radius:9px;min-width:38px;height:38px;display:grid;place-items:center;font-size:23px}
.filename {font-size:11px;margin-top:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#72849b}.rule{height:1px;background:#e6edf4;margin:22px 0}.help{font-size:12px;color:#76889c;line-height:1.5;margin:9px 0 14px}
.asset {width:100%;margin:0 0 9px;min-height:72px;border:1px solid #e3eaf2;background:#fff;border-radius:12px;display:flex;align-items:center;gap:12px;padding:9px 11px;text-align:left;color:#70849d;font-size:12px}.asset:hover,.asset.active{border-color:#3589d4;background:#eff7ff}.asset img {width:52px;height:52px;object-fit:contain;flex:none}.asset .signature-preview {object-fit:contain;width:71px;height:46px}.asset strong{font-size:13px;color:#1c2c42}.asset span:nth-child(2){flex:1;line-height:1.4}.asset .add{font-size:23px;color:#1a6bbb}
.slider-row {display:flex;align-items:center;justify-content:space-between;font-size:12px;margin:13px 0}.slider-row strong{color:var(--blue)}input[type=range]{width:100%;accent-color:#1968bd}.tools .button-subtle {margin-top:12px;min-height:39px;font-size:12px}.tools .button-primary{margin-top:0}.tools .button-outline {margin-top:9px}.privacy{font-size:11px;color:#8291a1;line-height:1.45;margin:15px 0 0}
.document-area {min-width:0;display:flex;flex-direction:column}.document-toolbar {padding:14px 22px;min-height:64px;border-bottom:1px solid #dce6f0;display:flex;justify-content:space-between;align-items:center;gap:14px;background:#fafcff}.page-picker,.zoom{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:650}.nav-button{border:1px solid #d3dfeb;background:#fff;border-radius:8px;height:32px;width:35px;color:var(--navy);font-weight:700}.zoom span{min-width:46px;text-align:center}
.stage {display:flex;align-items:flex-start;justify-content:center;flex:1;padding:24px;overflow:auto;min-height:400px;position:relative}.pdf-page {position:relative;background:white;box-shadow:0 8px 30px #17294325;flex:none;max-width:none;line-height:0}.pdf-page canvas {display:block}.overlays{position:absolute;inset:0;line-height:normal;touch-action:pan-x pan-y}.placed {position:absolute;transform:translate(-50%,-50%);border:1px dashed transparent;padding:0;user-select:none;-webkit-user-select:none;touch-action:none;cursor:grab}.placed.selected{border:2px dashed #0b82cf;background:#0c87d80a}.placed img{display:block;width:100%;height:auto;pointer-events:none;user-select:none;-webkit-user-drag:none}.placed:active{cursor:grabbing}.empty-state{margin:auto;max-width:330px;text-align:center;color:#8a9aab}.empty-state h2{font-size:20px;color:#47627d;margin:8px 0 8px}.empty-state p{font-size:13px;line-height:1.6}.empty-icon{font-size:82px;color:#b3c6d8}.statusline{min-height:38px;background:#f9fbff;border-top:1px solid #dfebf4;padding:10px 22px;font-size:12px;color:#68819a}
.login-body {min-height:100dvh;background:linear-gradient(135deg,#ecf4fb 0%,#d9e8f8 100%);display:grid;place-items:center;padding:20px}.login-wrap{width:min(100%,380px);text-align:center}.login-symbol{width:60px;height:60px;display:grid;place-items:center;border-radius:16px;margin:0 auto 22px;background:#11294b;color:#fff;font-size:37px;box-shadow:0 12px 26px #16325330}.login-wrap h1{font-size:30px;letter-spacing:-1px;margin:5px 0}.login-wrap p{color:#6b8095;font-size:14px;margin:8px 0 23px}.login-card{background:#fff;box-shadow:0 15px 35px #19334b1c;padding:25px;border-radius:18px;text-align:left;display:flex;flex-direction:column;gap:9px}.login-card label{font-size:12px;font-weight:650}.login-card input{width:100%;border:1px solid #d0dce7;border-radius:10px;padding:13px;margin-bottom:8px;outline:none}.login-card input:focus{border-color:#1968bd}.login-card button{margin-top:8px}.form-error{min-height:15px;color:#ae3444;font-size:12px;text-align:center}.login-wrap small{display:block;margin-top:20px;font-size:11px;color:#8395a6}
@media (max-width:760px){.topbar{height:60px;padding:0 15px}.logo{font-size:14px}.logo small{font-size:10px}.workspace{display:flex;flex-direction:column}.tools{border-right:0;border-bottom:1px solid var(--line);padding:18px 16px 12px}.panel-header h1{margin-bottom:13px;font-size:19px}.asset{min-height:63px}.asset img{width:43px;height:43px}.asset .signature-preview{width:61px}.tools .rule{margin:15px 0}.stage{padding:12px;min-height:360px;max-height:62dvh}.document-toolbar{padding:10px 12px;min-height:52px}.statusline{padding:10px 13px}.help{margin:6px 0 10px}.tools .button{min-height:43px}.privacy{margin:10px 0}.empty-state{margin:auto}.document-area {min-height:390px}}