:root{
  --gold:#c9a14a; --gold-2:#e6c878; --gold-d:#a07e2e;
  --ink:#1d1a14; --ink-2:#3a342a; --paper:#fffdf7;
  --bg:#0e0c09; --bg-2:#161208; --line:#e7dcbf;
  --green:#2e9e6b; --red:#c0493b;
  --shadow:0 18px 50px rgba(0,0,0,.18);
  --radius:18px;
  --serif:"Noto Serif TC","Songti TC",serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  color:var(--ink); background:#f3ecdd;
  -webkit-font-smoothing:antialiased;
}

/* ===== aurora bg for auth & sign ===== */
.aurora{position:fixed;inset:0;z-index:-1;background:
  radial-gradient(1200px 600px at 80% -10%, rgba(201,161,74,.22), transparent 60%),
  radial-gradient(900px 500px at -10% 110%, rgba(230,200,120,.18), transparent 55%),
  linear-gradient(160deg,#0e0c09,#1a160c 60%,#100d08);}

/* ===== buttons ===== */
.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:linear-gradient(135deg,var(--gold-2),var(--gold) 55%,var(--gold-d));
  color:#2a2208;font-weight:700;border:0;border-radius:999px;
  padding:12px 22px;cursor:pointer;font-size:15px;letter-spacing:1px;
  box-shadow:0 8px 22px rgba(201,161,74,.35);transition:.2s;text-decoration:none;
}
.btn-gold:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(201,161,74,.45)}
.btn-gold:active{transform:translateY(0)}
.btn-gold:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
.btn-gold.lg{padding:15px 28px;font-size:16px}
.btn-gold.full{width:100%}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid rgba(201,161,74,.6);color:var(--gold);
  border-radius:999px;padding:10px 18px;cursor:pointer;font-size:14px;text-decoration:none;transition:.2s;
}
.btn-ghost:hover{background:rgba(201,161,74,.12)}

/* ===== brand ===== */
.brand-mark{
  width:64px;height:64px;border-radius:50%;margin:0 auto;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:24px;color:#2a2208;
  background:linear-gradient(135deg,var(--gold-2),var(--gold-d));
  box-shadow:0 6px 18px rgba(201,161,74,.5), inset 0 0 0 2px rgba(255,255,255,.25);
}
.brand-mark.sm{width:38px;height:38px;font-size:15px}

/* ===== auth ===== */
.auth-body{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.auth-card{
  width:100%;max-width:400px;background:rgba(255,253,247,.97);
  border-radius:24px;padding:38px 30px;box-shadow:var(--shadow);
  border:1px solid rgba(201,161,74,.35);
}
.brand{text-align:center;margin-bottom:24px}
.brand h1{font-family:var(--serif);font-size:26px;margin:14px 0 2px;letter-spacing:4px;color:var(--ink)}
.brand-sub{color:var(--gold-d);font-size:13px;letter-spacing:3px;margin:0}
.field{display:block;margin-bottom:16px}
.field>span{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;letter-spacing:1px}
.field input[type=text],.field input[type=password],.copy-row input{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;
  font-size:15px;background:#fff;transition:.2s;
}
.field input:focus{outline:0;border-color:var(--gold);box-shadow:0 0 0 3px rgba(201,161,74,.18)}
.field input[type=file]{width:100%;padding:10px;border:1px dashed var(--line);border-radius:12px;background:#fff;font-size:14px}
.auth-card .btn-gold{width:100%;margin-top:6px}
.auth-foot{text-align:center;color:#9b9078;font-size:12px;margin-top:18px;letter-spacing:1px}
.alert{background:#fdecea;border:1px solid #f1bfb8;color:var(--red);padding:11px 14px;border-radius:12px;margin-bottom:16px;font-size:14px}
.alert.ok{background:#eaf7f0;border-color:#bfe6d2;color:var(--green)}

/* ===== admin ===== */
.admin-body{background:#f3ecdd}
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  padding:12px 22px;background:linear-gradient(135deg,#161208,#241d0d);color:#f1e6c8;
  box-shadow:0 4px 18px rgba(0,0,0,.18);
}
.topbar-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:18px;letter-spacing:2px}
.topbar-right{display:flex;align-items:center;gap:12px}
.who{color:var(--gold-2);font-size:14px}
.back{color:var(--gold-2);text-decoration:none;font-size:15px}
.wrap{max-width:1080px;margin:0 auto;padding:24px 18px 60px}
.wrap.narrow{max-width:840px}
.page-title{font-family:var(--serif);letter-spacing:3px;color:var(--ink);margin:6px 0 18px}

.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px}
.stat-card{background:#fff;border-radius:var(--radius);padding:20px;text-align:center;box-shadow:0 6px 20px rgba(0,0,0,.06);border:1px solid #efe6cf}
.stat-num{font-size:34px;font-weight:800;font-family:var(--serif)}
.stat-num.gold{color:var(--gold-d)}.stat-num.green{color:var(--green)}
.stat-lbl{color:#8a7f64;font-size:13px;margin-top:4px;letter-spacing:1px}

.panel{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:0 6px 20px rgba(0,0,0,.06);border:1px solid #efe6cf;margin-bottom:20px}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.panel-head h2{font-family:var(--serif);letter-spacing:2px;margin:0;font-size:19px}
.table-scroll{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th{text-align:left;color:#8a7f64;font-weight:600;padding:10px 12px;border-bottom:2px solid #efe6cf;white-space:nowrap}
.data-table td{padding:12px;border-bottom:1px solid #f3ecdd;vertical-align:middle}
.data-table .muted{color:#9b9078;font-size:13px;white-space:nowrap}
.data-table .empty{text-align:center;color:#9b9078;padding:30px}
.ops{display:flex;gap:10px;flex-wrap:wrap}
.lnk{background:none;border:0;color:var(--gold-d);cursor:pointer;font-size:13px;text-decoration:none;padding:0;white-space:nowrap}
.lnk:hover{text-decoration:underline}
.lnk.gold{font-weight:700}
.badge{padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700}
.badge-pending{background:#fbf0d6;color:#9a7613}
.badge-signed{background:#e3f5ec;color:#1f7a4f}
.badge-void{background:#f1e4e2;color:#9a3b30}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:8px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}.stat-grid{gap:8px}.stat-num{font-size:26px}}
.form-actions{display:flex;gap:12px;margin-top:18px;flex-wrap:wrap}

.link-panel .hint{color:#8a7f64;font-size:13px;margin:2px 0 12px}
.copy-row{display:flex;gap:10px}
.copy-row input{flex:1}
.qr-wrap{margin-top:16px;text-align:center}
.qr-wrap img{border:8px solid #fff;border-radius:14px;box-shadow:0 6px 18px rgba(0,0,0,.1)}

.record-bar{display:flex;gap:18px;flex-wrap:wrap;background:#fff;border:1px solid #efe6cf;border-radius:12px;padding:12px 16px;margin-bottom:16px;font-size:14px;color:#6b6149}
.paper{background:var(--paper);border-radius:14px;padding:30px 26px;box-shadow:var(--shadow);border:1px solid #ece0c0}

/* ===== sign (mobile) ===== */
.sign-body{background:linear-gradient(165deg,#171307,#221b0d 70%,#15110a);min-height:100vh;color:#eee}
.sign-header{display:flex;align-items:center;gap:12px;padding:16px 18px;position:sticky;top:0;z-index:10;
  background:linear-gradient(180deg,rgba(20,16,8,.95),rgba(20,16,8,.6));backdrop-filter:blur(8px)}
.sh-title{font-family:var(--serif);font-size:18px;color:#f1e6c8;letter-spacing:2px}
.sh-sub{font-size:12px;color:var(--gold);letter-spacing:2px}
.sign-main{max-width:680px;margin:0 auto;padding:10px 14px 40px}

.progress-steps{display:flex;align-items:center;justify-content:center;gap:6px;margin:10px 0 18px}
.step{display:flex;flex-direction:column;align-items:center;gap:4px;color:#7b745f;font-size:12px}
.step span{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);border:1px solid rgba(201,161,74,.3);font-weight:700}
.step.active{color:var(--gold-2)}
.step.active span{background:linear-gradient(135deg,var(--gold-2),var(--gold-d));color:#2a2208;border-color:transparent}
.progress-steps .line{flex:0 0 26px;height:1px;background:rgba(201,161,74,.3)}

.attach-bar{display:flex;align-items:center;gap:10px;text-decoration:none;
  background:rgba(201,161,74,.12);border:1px solid rgba(201,161,74,.35);
  border-radius:14px;padding:13px 16px;margin-bottom:14px;color:#f1e6c8}
.att-txt{flex:1;font-size:14px}.att-go{color:var(--gold-2);font-weight:700}

.sign-paper{margin-bottom:18px;max-height:none}
.sign-zone{background:rgba(255,253,247,.98);border-radius:var(--radius);padding:22px 18px;
  box-shadow:var(--shadow);color:var(--ink);border:1px solid rgba(201,161,74,.4)}
.sz-title{font-family:var(--serif);text-align:center;letter-spacing:3px;margin:0 0 4px;color:var(--ink)}
.sz-hint{text-align:center;color:#8a7f64;font-size:13px;margin:0 0 12px}
.pad-wrap{position:relative;border:2px dashed var(--gold);border-radius:14px;background:#fffdf6;overflow:hidden;height:220px}
#pad{width:100%;height:100%;display:block;touch-action:none}
.pad-baseline{position:absolute;left:8%;right:8%;bottom:46px;border-bottom:1px solid #d9cba2}
.pad-watermark{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:30px;color:rgba(201,161,74,.10);letter-spacing:8px;pointer-events:none}
.pad-actions{display:flex;justify-content:flex-end;margin:10px 0 4px}
.agree{display:flex;gap:10px;align-items:flex-start;margin:14px 0;font-size:13.5px;color:var(--ink-2);line-height:1.6}
.agree input{margin-top:3px;width:20px;height:20px;accent-color:var(--gold-d);flex:0 0 auto}
.secure-note{text-align:center;color:#8a7f64;font-size:12px;margin-top:12px}

.done-banner{background:rgba(46,158,107,.15);border:1px solid rgba(46,158,107,.5);color:#9be9c2;
  text-align:center;padding:16px;border-radius:14px;font-size:15px;letter-spacing:1px}

.state-card{max-width:420px;margin:14vh auto 0;background:rgba(255,253,247,.97);border-radius:22px;
  padding:40px 28px;text-align:center;color:var(--ink);box-shadow:var(--shadow)}
.state-ic{width:64px;height:64px;border-radius:50%;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;
  font-size:32px;background:#fbeae7;color:var(--red);font-weight:700}
.state-card h2{font-family:var(--serif);letter-spacing:2px;margin:0 0 8px}
.state-card p{color:#8a7f64;margin:0}

/* overlays */
.overlay{position:fixed;inset:0;z-index:50;display:none;align-items:center;justify-content:center;
  background:rgba(10,8,4,.72);backdrop-filter:blur(4px);padding:24px}
.overlay.show{display:flex}
.ov-card{background:#fffdf7;border-radius:22px;padding:34px 30px;text-align:center;max-width:340px;width:100%;color:var(--ink);box-shadow:var(--shadow)}
.ov-card p{color:#6b6149;margin:14px 0 0}
.spinner{width:46px;height:46px;border:4px solid #eee2c4;border-top-color:var(--gold-d);border-radius:50%;margin:0 auto;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.success-card .check-circle{width:74px;height:74px;border-radius:50%;margin:0 auto 14px;
  display:flex;align-items:center;justify-content:center;font-size:40px;color:#fff;
  background:linear-gradient(135deg,#3ec98a,var(--green));box-shadow:0 8px 22px rgba(46,158,107,.5);
  animation:pop .4s cubic-bezier(.2,1.4,.4,1)}
@keyframes pop{0%{transform:scale(.4);opacity:0}100%{transform:scale(1);opacity:1}}
.success-card h2{font-family:var(--serif);letter-spacing:2px;margin:0 0 6px}
.success-card p{margin:0 0 18px}
.success-card .btn-gold{width:100%}

.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);
  background:#241d0d;color:#f1e6c8;padding:12px 22px;border-radius:999px;font-size:14px;
  box-shadow:0 8px 24px rgba(0,0,0,.3);opacity:0;transition:.3s;z-index:99;pointer-events:none;border:1px solid rgba(201,161,74,.4)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== v2: stat four / red link ===== */
.stat-grid.four{grid-template-columns:repeat(4,1fr)}
@media(max-width:640px){.stat-grid.four{grid-template-columns:repeat(2,1fr)}}
.lnk.red{color:#b34;}
.doc-title-top{color:var(--gold-2);font-size:15px;max-width:50vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.save-msg{font-size:13px;color:#6b6149;text-align:center;margin-top:8px;min-height:18px}

/* ===== editor layout ===== */
.editor-body{background:#2a2519}
.editor-layout{display:flex;gap:0;min-height:calc(100vh - 56px)}
.editor-side{width:320px;flex:0 0 320px;background:#fffdf7;padding:20px 18px;overflow-y:auto;
  box-shadow:6px 0 24px rgba(0,0,0,.2);max-height:calc(100vh - 56px);position:sticky;top:56px}
.editor-side h3{font-family:var(--serif);letter-spacing:2px;margin:0 0 10px;color:var(--ink)}
.editor-side h4{margin:14px 0 8px;color:var(--gold-d);font-size:14px}
.editor-side .hint{font-size:13px;color:#8a7f64;line-height:1.7;margin:0 0 14px}
.steps{margin:0 0 16px;padding:0;list-style:none;counter-reset:step}
.steps li{position:relative;padding:0 0 12px 34px;font-size:13px;color:#6b6149;line-height:1.6}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;
  width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,var(--gold),var(--gold-d));
  color:#2a2208;font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 6px rgba(160,126,46,.4)}
.steps li:not(:last-child)::after{content:"";position:absolute;left:11px;top:26px;bottom:2px;width:2px;background:#ecdfba}
.steps li b{color:var(--gold-d)}
.editor-side .btn-gold.full{width:100%;margin-top:6px}
.field-list{margin-bottom:14px}
.fl-empty{color:#b3a98c;font-size:13px;text-align:center;padding:16px;border:1px dashed #e2d6b4;border-radius:10px}
.fl-row{display:flex;align-items:center;gap:8px;padding:7px 0;border-bottom:1px solid #f0e8d3}
.fl-idx{width:22px;height:22px;border-radius:50%;background:var(--gold);color:#2a2208;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:0 0 auto}
.fl-pg{font-size:12px;color:#8a7f64;flex:0 0 auto}
.fl-label{flex:1;border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-size:13px;min-width:0}
.btn-gold.sm{padding:9px 14px;font-size:13px}
.link-block{margin-top:16px;padding-top:14px;border-top:1px solid #eee2c4}

.editor-canvas{flex:1;min-width:0;overflow:auto;padding:24px;display:flex;flex-direction:column;align-items:center}
.pdf-pages{width:100%;max-width:900px;display:flex;flex-direction:column;gap:20px;align-items:center}
.pdf-page{position:relative;background:#fff;box-shadow:0 8px 30px rgba(0,0,0,.35);border-radius:2px}
.pdf-page canvas{display:block;border-radius:2px}
.field-layer{position:absolute;inset:0;cursor:crosshair;touch-action:none;z-index:2;
  background:rgba(201,161,74,.04);transition:background .2s,box-shadow .2s}
.pdf-page:hover .field-layer{background:rgba(201,161,74,.08);box-shadow:inset 0 0 0 2px rgba(201,161,74,.35)}
.field-layer.drawing{background:rgba(201,161,74,.1)}
.page-num{position:absolute;top:-22px;left:0;color:#cbb98a;font-size:12px;z-index:3}
.loading{color:#cbb98a;padding:40px;font-size:15px}

.draw-box{position:absolute;border:2px dashed var(--gold-2);background:rgba(201,161,74,.18);
  pointer-events:none;border-radius:4px}
.draw-box.valid{border-color:#3ec98a;background:rgba(46,158,107,.18)}
.draw-badge{position:absolute;top:-24px;left:0;background:#241d0d;color:#f1e6c8;font-size:11px;
  padding:2px 8px;border-radius:6px;white-space:nowrap;box-shadow:0 2px 8px rgba(0,0,0,.3);font-weight:600}
.draw-box.valid .draw-badge{background:#1f6b48}
.placed-box{position:absolute;border:2px solid var(--gold-d);background:rgba(201,161,74,.16);
  border-radius:4px;display:flex;align-items:center;justify-content:center;cursor:default;
  transition:transform .15s,box-shadow .15s,background .15s;animation:placeIn .25s cubic-bezier(.2,1.4,.4,1)}
.placed-box:hover{background:rgba(201,161,74,.28);box-shadow:0 4px 14px rgba(160,126,46,.35);transform:translateY(-1px)}
@keyframes placeIn{0%{transform:scale(.7);opacity:0}100%{transform:scale(1);opacity:1}}
.pb-label{font-size:12px;color:#7a5a1e;font-weight:700;pointer-events:none;padding:0 4px;text-align:center}
.pb-del{position:absolute;top:-11px;right:-11px;width:24px;height:24px;border-radius:50%;border:0;
  background:#b34;color:#fff;cursor:pointer;font-size:13px;line-height:1;box-shadow:0 2px 6px rgba(0,0,0,.3);
  opacity:0;transform:scale(.6);transition:.15s}
.placed-box:hover .pb-del{opacity:1;transform:scale(1)}
.pb-del:hover{background:#d6455a}

@media(max-width:760px){
  .editor-layout{flex-direction:column}
  .editor-side{width:100%;flex:none;position:static;max-height:none;box-shadow:0 4px 18px rgba(0,0,0,.2)}
  .editor-canvas{padding:14px}
}
@media(hover:none){
  .pb-del{opacity:1;transform:scale(1)}
}

/* ===== customer sign: pdf + targets ===== */
.sign-tip{color:#d8c89c;font-size:13.5px;text-align:center;margin:4px 14px 14px;line-height:1.7}
.tip-box{display:inline-block;background:rgba(201,161,74,.25);border:1px solid var(--gold);color:var(--gold-2);
  padding:1px 8px;border-radius:6px;font-size:12px}
.sign-pdf-area{width:100%;display:flex;flex-direction:column;gap:16px;align-items:center;padding-bottom:90px}
.sign-pdf-area .pdf-page{box-shadow:0 8px 30px rgba(0,0,0,.4)}
.sign-target{position:absolute;border:2px dashed var(--gold);background:rgba(201,161,74,.14);
  border-radius:6px;display:flex;align-items:center;justify-content:center;cursor:pointer;
  animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(201,161,74,.5)}50%{box-shadow:0 0 0 6px rgba(201,161,74,0)}}
.stg-label{font-size:12px;color:#7a5a1e;font-weight:700;pointer-events:none;text-align:center;padding:0 4px}
.sign-target.done{border-style:solid;border-color:var(--green);background:rgba(46,158,107,.10);animation:none}
.stg-img{max-width:100%;max-height:100%;object-fit:contain;pointer-events:none}
.stg-check{position:absolute;top:-10px;right:-10px;width:22px;height:22px;border-radius:50%;
  background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;box-shadow:0 2px 6px rgba(0,0,0,.3)}

.sign-bottom-bar{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;align-items:center;justify-content:space-between;
  gap:14px;padding:12px 18px;background:linear-gradient(180deg,rgba(20,16,8,.6),rgba(20,16,8,.97));
  backdrop-filter:blur(8px);border-top:1px solid rgba(201,161,74,.3)}
.sign-progress-txt{color:#f1e6c8;font-size:15px}
.sign-progress-txt span{color:var(--gold-2);font-weight:800;font-size:18px}
.sign-bottom-bar .btn-gold{flex:0 0 auto}

/* ===== pad modal ===== */
.pad-modal-card{background:#fffdf7;border-radius:20px;width:100%;max-width:520px;padding:18px;box-shadow:var(--shadow)}
.pm-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.pm-head span{font-family:var(--serif);font-size:17px;letter-spacing:2px;color:var(--ink)}
.pm-close{border:0;background:#f0e8d3;width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:15px;color:#7a5a1e}
.pad-wrap.modal{height:240px;border:2px dashed var(--gold);border-radius:14px;background:#fffdf6;position:relative;overflow:hidden}
.pad-wrap.modal #pad{width:100%;height:100%;display:block;touch-action:none}
.pm-actions{display:flex;gap:10px;margin-top:14px}
.pm-actions .btn-ghost{flex:1}
.pm-actions .btn-gold{flex:2}