:root{
  --bg:#f6f7f8;
  --card:#fff;
  --text:#151719;
  --muted:#6d747b;
  --line:#e7e9eb;
  --accent:#1f6f5c;
  --accent-soft:#e8f2ef;
  --danger:#a33;
  --shadow:0 10px 30px rgba(20,30,35,.07);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:Tahoma,"Vazirmatn",Arial,sans-serif}
button,input{font:inherit}
button{cursor:pointer}
.app-shell{max-width:720px;margin:0 auto;padding:18px 16px 40px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.topbar h1{font-size:24px;margin:2px 0 0}
.eyebrow{font-size:12px;color:var(--muted)}
.ghost-btn,.text-btn{border:0;background:transparent;color:var(--accent);padding:10px 12px}
.hero-card,.form-card,.invoice-card,.message-card{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
.hero-card{padding:22px;margin-bottom:14px}
.hero-card h2{margin:0 0 8px;font-size:20px}
.hero-card p{margin:0;color:var(--muted);line-height:1.8}
.grid-menu{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.menu-card{min-height:146px;text-align:right;border:1px solid var(--line);background:var(--card);border-radius:20px;padding:18px;display:flex;flex-direction:column;gap:7px;box-shadow:0 4px 16px rgba(20,30,35,.04)}
.menu-card.primary{border-color:#cfe2dc;background:linear-gradient(180deg,#fff,#f5fbf9)}
.menu-card strong{font-size:16px}.menu-card small{color:var(--muted);line-height:1.6}.menu-icon{font-size:25px}
.view{display:none}.view.active{display:block}
.form-card,.invoice-card{padding:20px}
.field{margin-bottom:20px}.field>label{display:block;font-weight:700;margin-bottom:9px}
.field input[type=number]{width:100%;height:50px;border:1px solid var(--line);border-radius:14px;padding:0 14px;background:#fff;outline:none}
.field input[type=number]:focus{border-color:var(--accent)}
.segmented{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.segmented.wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
.segmented label{position:relative}.segmented input{position:absolute;opacity:0;pointer-events:none}.segmented span{display:flex;min-height:46px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:13px;padding:8px;text-align:center;background:#fff}
.segmented input:checked+span{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:700}
.cta{width:100%;min-height:52px;border:0;border-radius:15px;background:var(--accent);color:#fff;font-weight:700;margin-top:6px}.cta.secondary{background:#18211f}.text-btn{width:100%;margin-top:6px}
.stepper{display:flex;align-items:center;justify-content:center;margin:8px 0 14px}.stepper span{width:30px;height:30px;border-radius:50%;background:#e4e7e8;color:#7b8084;display:grid;place-items:center;font-size:13px}.stepper span.active{background:var(--accent);color:white}.stepper i{width:32px;height:2px;background:#e4e7e8}
.invoice-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:16px}.invoice-head small{color:var(--muted)}.invoice-head h2{margin:4px 0 0}.status{background:#fff4da;color:#87600a;border-radius:999px;padding:7px 9px;font-size:11px}
.invoice-rows{padding:8px 0}.invoice-row{display:flex;justify-content:space-between;gap:16px;padding:10px 0;color:var(--muted)}.invoice-row strong{color:var(--text);font-weight:600}.invoice-total{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:16px;font-size:16px}.invoice-total strong{font-size:20px}.hint{font-size:12px;line-height:1.8;color:var(--muted);background:#f7f8f8;padding:11px;border-radius:12px}
.message-card{text-align:center;padding:34px 22px}.message-icon{margin:0 auto 15px;width:54px;height:54px;display:grid;place-items:center;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:24px;font-weight:bold}.message-card h2{margin:0 0 8px}.message-card p{color:var(--muted);line-height:1.8}
@media(max-width:420px){.app-shell{padding:14px 12px 30px}.grid-menu{gap:9px}.menu-card{min-height:138px;padding:15px}.topbar h1{font-size:21px}}