:root{
  --cyan:#00c8ff; --cyan-d:#009cc7; --orange:#ffa400; --orange-d:#d98a00;
  --bg:#f6f8fa; --card:#fff; --ink:#0f1d26; --muted:#64757f; --line:#e1e7eb;
  --ok:#14a05a; --bad:#d6334a; --r:14px;
  --shadow:0 1px 2px rgba(15,29,38,.05),0 4px 16px rgba(15,29,38,.05);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:"Segoe UI",Arial,Heebo,sans-serif;font-size:16px;line-height:1.45}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--cyan-d);text-decoration:none}
.hidden{display:none!important}

/* top bar */
.top{position:sticky;top:0;z-index:20;background:#ffffffee;backdrop-filter:blur(8px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top)}
.top-in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:10px;padding:8px 16px}
.top .logo{height:38px;display:block}
.top .grow{flex:1}
.search{position:relative;flex:1;max-width:360px}
.search input{width:100%;height:44px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:#fff}
.nav{max-width:1180px;margin:0 auto;display:flex;gap:4px;padding:0 12px 8px;overflow-x:auto}
.nav a{padding:8px 14px;border-radius:10px;color:var(--muted);font-weight:600;white-space:nowrap}
.nav a.on{background:#00c8ff1a;color:var(--cyan-d)}
main{max-width:1180px;margin:0 auto;padding:16px 16px 110px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 18px;border-radius:12px;border:1px solid var(--line);background:#fff;font-weight:600;cursor:pointer;transition:transform .08s,box-shadow .15s,background .15s;white-space:nowrap}
.btn:hover{box-shadow:var(--shadow)}
.btn:active{transform:scale(.98)}
.btn.primary{background:linear-gradient(135deg,var(--orange),#ffb733);border-color:var(--orange);color:#201400;box-shadow:0 4px 14px #ffa40040}
.btn.cyan{background:var(--cyan);border-color:var(--cyan);color:#012a36}
.btn.danger{color:var(--bad);border-color:#f3c3cb}
.btn.sm{min-height:38px;padding:0 12px;font-size:14px;border-radius:10px}
.btn.icon{min-width:44px;padding:0}
.btn[disabled]{opacity:.55;pointer-events:none}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:16px;margin-bottom:14px;animation:in .18s ease-out}
.card h2{font-size:15px;margin:0 0 12px;color:var(--muted);font-weight:700;letter-spacing:.2px}
@keyframes in{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
h1{font-size:22px;margin:4px 0 14px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.between{justify-content:space-between}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;box-shadow:var(--shadow);border-top:3px solid var(--cyan)}
.stat:nth-child(even){border-top-color:var(--orange)}
.stat .l{font-size:13px;color:var(--muted)}
.stat .v{font-size:22px;font-weight:800;margin-top:2px;direction:ltr;text-align:right}

/* forms */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
label.f{display:block;font-size:13px;color:var(--muted);font-weight:600}
label.f>span{display:block;margin-bottom:4px}
input[type=text],input[type=email],input[type=tel],input[type=date],input[type=password],input[type=number],input[type=search],select,textarea{
  width:100%;min-height:48px;border:1px solid #cfd8de;border-radius:12px;padding:10px 12px;background:#fff;outline:none;transition:border .12s,box-shadow .12s;color:var(--ink);font-size:16px}
textarea{min-height:76px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px #00c8ff33}
input[readonly]{background:#f1f4f6;color:var(--muted)}
input.num{direction:ltr;text-align:right}
.err{color:var(--bad);font-size:14px;margin:8px 0}
.chk{display:flex;align-items:center;gap:8px;min-height:44px}
.chk input{width:22px;height:22px;accent-color:var(--cyan)}

/* autocomplete */
.ac{position:relative}
.ac-list{position:absolute;z-index:30;inset-inline:0;top:100%;margin-top:4px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px rgba(15,29,38,.15);max-height:260px;overflow:auto}
.ac-list button{display:block;width:100%;text-align:right;background:none;border:0;padding:11px 14px;cursor:pointer;border-bottom:1px solid #f0f3f5}
.ac-list button:hover,.ac-list button.hl{background:#00c8ff12}
.ac-list small{color:var(--muted);display:block}

/* line items */
.item{border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:10px;background:#fcfdfe;animation:in .15s}
.item-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;align-items:end}
.item-grid .desc{grid-column:span 6}
.item .tot{font-weight:800;font-size:17px;direction:ltr;text-align:right;min-height:48px;display:flex;align-items:center;justify-content:flex-end}
.item-actions{display:flex;gap:6px;justify-content:space-between;align-items:center;margin-top:8px}
.seg{display:flex;border:1px solid #cfd8de;border-radius:12px;overflow:hidden}
.seg button{flex:1;border:0;background:#fff;min-height:48px;padding:0 10px;cursor:pointer;font-weight:600}
.seg button.on{background:var(--cyan);color:#012a36}

.totals{background:linear-gradient(180deg,#fff,#f4fbfe);border:1px solid #bfeaf8;border-radius:var(--r);padding:14px 16px}
.totals .l{display:flex;justify-content:space-between;padding:4px 0;color:var(--muted)}
.totals .l b{color:var(--ink);direction:ltr}
.totals .g{border-top:2px solid var(--cyan);margin-top:6px;padding-top:8px;font-size:20px;font-weight:800;color:var(--ink)}
.totals .g b{color:var(--ink)}

.editor{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:1100px){.editor.with-prev{grid-template-columns:minmax(0,1fr) 440px}}
.prevbox{position:sticky;top:110px;align-self:start;display:none}
@media(min-width:1100px){.prevbox{display:block}}
.prevwrap{width:440px;height:622px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#e9edf1;box-shadow:var(--shadow)}
.prevwrap iframe{width:210mm;height:297mm;border:0;transform:scale(.55);transform-origin:top right;display:block}

/* sticky action bar */
.bar{position:fixed;inset-inline:0;bottom:0;z-index:25;background:#fffffff2;backdrop-filter:blur(8px);border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom))}
.bar-in{max-width:1180px;margin:0 auto;display:flex;gap:10px;align-items:center}
.bar .sum{flex:1;font-weight:800;font-size:18px;direction:ltr;text-align:right;white-space:nowrap}
.bar .sum small{display:block;font-size:12px;color:var(--muted);font-weight:600;direction:rtl;text-align:right}

/* tables / lists */
table.t{width:100%;border-collapse:collapse}
table.t th{font-size:13px;color:var(--muted);text-align:right;padding:10px 12px;border-bottom:1px solid var(--line);font-weight:700;background:#fafcfd}
table.t td{padding:12px;border-bottom:1px solid #eef2f4;vertical-align:middle}
table.t tr:hover td{background:#fafdff}
.money{direction:ltr;text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700;background:#eef2f4;color:var(--muted)}
.badge.issued{background:#e0f6fd;color:#007ea3}.badge.sent{background:#fff1d6;color:#a86a00}.badge.paid{background:#dcf5e8;color:#0c7a43}.badge.cancelled{background:#fde4e8;color:#b3203a}.badge.draft{background:#eef2f4}
.dcard{display:none}
.dcard{border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:10px;background:#fff}
.dcard .r1{display:flex;justify-content:space-between;gap:8px;font-weight:700}
.dcard .r2{color:var(--muted);font-size:14px;margin:2px 0 8px}
.actions{display:flex;gap:6px;flex-wrap:wrap}
.filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.empty{text-align:center;color:var(--muted);padding:30px}

/* modal */
.modal-bg{position:fixed;inset:0;background:#0f1d2699;z-index:60;display:flex;align-items:center;justify-content:center;padding:16px;animation:in .12s}
.modal{background:#fff;border-radius:16px;padding:20px;max-width:440px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal h3{margin:0 0 8px}
.modal .row{margin-top:16px;justify-content:flex-end}
#toast{position:fixed;bottom:90px;inset-inline:0;margin:auto;width:max-content;max-width:90%;background:#0f1d26;color:#fff;padding:10px 18px;border-radius:12px;opacity:0;transform:translateY(10px);transition:.2s;pointer-events:none;z-index:99}
#toast.show{opacity:1;transform:none}

/* login */
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:radial-gradient(circle at 80% 0,#00c8ff22,transparent 50%),radial-gradient(circle at 0 100%,#ffa40022,transparent 50%),var(--bg)}
.auth .card{max-width:400px;width:100%;padding:26px}
.auth img{display:block;width:230px;max-width:80%;margin:0 auto 18px}
.auth .f{margin-bottom:12px}

.preview-frame{width:100%;height:78vh;border:1px solid var(--line);border-radius:12px;background:#e9edf1}
.sigprev{max-height:80px;max-width:220px;border:1px dashed #cfd8de;padding:6px;border-radius:8px;background:#fff}
.kv{display:grid;grid-template-columns:140px 1fr;gap:6px 12px}.kv dt{color:var(--muted)}.kv dd{margin:0}

@media(max-width:760px){
  .stats{grid-template-columns:1fr 1fr}
  .stat .v{font-size:18px}
  .grid.c2{grid-template-columns:1fr 1fr}
  .item-grid{grid-template-columns:repeat(2,1fr)}
  .item-grid .desc{grid-column:span 2}
  table.t.responsive{display:none}
  .dcard{display:block}
  .search{max-width:none}
  .top .logo{height:32px}
  .hide-m{display:none}
  .kv{grid-template-columns:110px 1fr}
}
@media print{.top,.nav,.bar,#toast{display:none}}