/* ============================================================
   HoànTiền — design tokens
   Concept: "biên lai minh bạch" — polymer-banknote mint paper,
   deep VND green, gold coin accent; seal-red reserved for the
   receipt stamp only. Money digits always mono, like a printer.
   ============================================================ */
:root{
  --ink:#0F231D;
  --green:#0E5A46;
  --green-deep:#0A3D30;
  --mint:#EDF3EE;
  --mint-2:#E2ECE4;
  --line:#C7D6CB;
  --gold:#E8A81C;
  --stamp:#D6482B;
  --white:#FFFFFF;
  --radius:14px;
  --shadow:0 6px 24px rgba(15,35,29,.10);
  --font-body:"Be Vietnam Pro",system-ui,-apple-system,sans-serif;
  --font-display:"Archivo","Be Vietnam Pro",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);color:var(--ink);background:var(--mint);
  min-height:100dvh;display:flex;flex-direction:column;
  background-image:radial-gradient(circle at 20% -10%,#F6FAF6 0,transparent 45%);
}
button{font:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* ---------- app shell ---------- */
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  padding:calc(10px + env(safe-area-inset-top)) 16px 10px;background:var(--green);color:#fff;
}
.brand{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:900;font-size:1.15rem;letter-spacing:.01em}
.brand-coin{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;
  background:var(--gold);color:var(--green-deep);font-family:var(--font-mono);font-weight:700;font-size:.9rem}
.topbar-right{display:flex;gap:8px;align-items:center}
.lang-btn{color:#fff;border:1.5px solid rgba(255,255,255,.45);border-radius:8px;padding:4px 9px;font-weight:600;font-size:.8rem}
.pill-btn{background:var(--gold);color:var(--green-deep);font-weight:700;border-radius:999px;padding:7px 14px;font-size:.85rem}
.user-header-pill{
  display:flex;align-items:center;gap:6px;background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.3);
  border-radius:999px;padding:3px 10px 3px 4px;color:#fff;font-size:.8rem;font-weight:600;cursor:pointer;
  transition:background .15s ease, transform .06s ease;
}
.user-header-pill:hover{background:rgba(255,255,255,0.25)}
.user-header-pill:active{transform:scale(0.97)}
.user-avatar-img{width:26px;height:26px;border-radius:50%;object-fit:cover;border:1.5px solid var(--gold);background:var(--mint)}

.view{flex:1;width:100%;max-width:480px;margin:0 auto;padding:18px 16px calc(84px + env(safe-area-inset-bottom))}

.tabbar{
  position:fixed;bottom:0;left:0;right:0;z-index:20;display:flex;max-width:480px;margin:0 auto;
  background:var(--white);border-top:1.5px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:9px 0 7px;
  font-size:.68rem;font-weight:600;color:#6B7F76}
.tab-ic{font-size:1.15rem;line-height:1}
.tab.active{color:var(--green)}
.tab.active .tab-ic{transform:translateY(-1px)}

/* ---------- home / hero ---------- */
.hero-title{font-family:var(--font-display);font-weight:900;font-size:clamp(1.5rem,6vw,1.9rem);line-height:1.15;margin:6px 0 4px}
.hero-title em{font-style:normal;color:var(--green);border-bottom:4px solid var(--gold)}
.hero-sub{color:#43554D;font-size:.9rem;margin-bottom:14px}

.paste-card{background:var(--white);border:1.5px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}
.paste-row{display:flex;gap:8px}
.paste-input{
  flex:1;min-width:0;border:1.5px solid var(--line);border-radius:10px;padding:12px;
  font:inherit;font-size:.92rem;background:var(--mint);
}
.paste-input:focus{border-color:var(--green);outline:none;background:#fff}
.btn{border-radius:10px;padding:12px 16px;font-weight:700;font-size:.92rem;transition:transform .06s ease}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--green);color:#fff}
.btn-gold{background:var(--gold);color:var(--green-deep)}
.btn-ghost{border:1.5px solid var(--line);color:var(--green-deep);background:#fff}
.btn-block{display:block;width:100%;text-align:center}
.merchant-chips{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.chip{font-size:.72rem;font-weight:600;color:var(--green-deep);background:var(--mint-2);border-radius:999px;padding:4px 10px}

/* ---------- the signature: thermal receipt ---------- */
.receipt{position:relative;margin-top:16px;background:#FFFDF7;box-shadow:var(--shadow);
  border-radius:4px 4px 0 0;padding:16px 16px 22px;animation:slideUp .35s ease}
.receipt::after{ /* torn edge */
  content:"";position:absolute;left:0;right:0;bottom:-9px;height:10px;
  background:radial-gradient(circle at 6px -2px,transparent 7px,#FFFDF7 7px);
  background-size:14px 10px;background-repeat:repeat-x;
}
.receipt-head{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:.72rem;color:#5A6A62;
  border-bottom:1.5px dashed var(--line);padding-bottom:8px;margin-bottom:10px;text-transform:uppercase}
.receipt-line{display:flex;justify-content:space-between;align-items:baseline;font-size:.85rem;padding:4px 0;gap:12px}
.receipt-line .k{color:#5A6A62}
.receipt-line .v{font-family:var(--font-mono);font-weight:500;text-align:right;word-break:break-all}
.receipt-total{border-top:1.5px dashed var(--line);margin-top:8px;padding-top:10px;
  display:flex;justify-content:space-between;align-items:center}
.receipt-total .k{font-weight:700;font-size:.9rem}
.receipt-total .v{font-family:var(--font-mono);font-weight:700;font-size:1.5rem;color:var(--green)}
.stamp{
  position:absolute;top:8px;right:12px;transform:rotate(-8deg);
  border:2.5px solid var(--stamp);color:var(--stamp);border-radius:6px;
  font-family:var(--font-display);font-weight:900;font-size:.72rem;letter-spacing:.08em;
  padding:4px 8px;text-transform:uppercase;opacity:.92;
  animation:stampIn .3s cubic-bezier(.2,1.6,.4,1) .25s backwards;
}
.receipt-actions{display:flex;gap:8px;margin-top:14px}
.receipt-actions .btn{flex:1}
@keyframes stampIn{from{transform:rotate(-8deg) scale(2.2);opacity:0}to{transform:rotate(-8deg) scale(1);opacity:.92}}
@keyframes slideUp{from{transform:translateY(10px);opacity:0}to{transform:none;opacity:1}}

/* ---------- steps / cards / lists ---------- */
.section-label{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:#5A6A62;margin:22px 0 10px}
.step{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--mint-2)}
.step:last-child{border-bottom:0}
.step-n{font-family:var(--font-mono);font-weight:700;color:var(--gold);font-size:1rem;min-width:22px}
.step b{display:block;font-size:.9rem}
.step p{font-size:.82rem;color:#43554D}

.card{background:var(--white);border:1.5px solid var(--line);border-radius:var(--radius);padding:14px;margin-bottom:10px}
.card-row{display:flex;justify-content:space-between;align-items:center;gap:10px}
.muted{color:#5A6A62;font-size:.8rem}
.money{font-family:var(--font-mono);font-weight:700}
.money.pos{color:var(--green)} .money.neg{color:var(--stamp)}

.empty{padding:36px 12px;text-align:center;color:#5A6A62}
.empty .big{font-size:2rem;display:block;margin-bottom:8px}

/* wallet balance strip */
.balances{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}
.balance-cell{background:var(--white);border:1.5px solid var(--line);border-radius:12px;padding:10px;text-align:center}
.balance-cell .amt{font-family:var(--font-mono);font-weight:700;font-size:1.02rem}
.balance-cell.avail{background:var(--green);border-color:var(--green);color:#fff}
.balance-cell .lbl{font-size:.66rem;font-weight:600;opacity:.85;text-transform:uppercase;letter-spacing:.05em}
.tier-badge{display:inline-flex;align-items:center;gap:6px;background:var(--mint-2);border-radius:999px;
  padding:5px 12px;font-size:.78rem;font-weight:700;color:var(--green-deep)}

.status{font-size:.68rem;font-weight:700;border-radius:6px;padding:3px 8px;text-transform:uppercase;letter-spacing:.03em}
.status.recorded,.status.pending{background:#FFF3D6;color:#8A6A0E}
.status.confirmed,.status.paid_out,.status.done{background:#DDF0E4;color:var(--green-deep)}
.status.cancelled,.status.rejected,.status.fraud{background:#FBE3DD;color:var(--stamp)}
.status.requested,.status.processing{background:var(--mint-2);color:#43554D}

/* forms, sheet, toast */
.field{margin-bottom:12px}
.field label{display:block;font-size:.8rem;font-weight:600;margin-bottom:5px}
.field input,.field select{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:11px;font:inherit;background:#fff}
.field input:focus{border-color:var(--green);outline:none}
.otp-input{letter-spacing:.5em;font-family:var(--font-mono);font-size:1.3rem;text-align:center}

.sheet{position:fixed;inset:0;z-index:40;background:rgba(15,35,29,.45);display:flex;align-items:flex-end;justify-content:center}
.sheet-card{background:#fff;width:100%;max-width:480px;border-radius:18px 18px 0 0;padding:20px 18px calc(20px + env(safe-area-inset-bottom));
  animation:slideUp .25s ease;max-height:86dvh;overflow:auto}
.sheet-title{font-family:var(--font-display);font-weight:900;font-size:1.15rem;margin-bottom:12px}
.sheet-close{float:right;font-size:1.1rem;color:#5A6A62;padding:2px 8px}

.toast{position:fixed;left:50%;bottom:calc(92px + env(safe-area-inset-bottom));transform:translateX(-50%);
  z-index:50;background:var(--ink);color:#fff;border-radius:10px;padding:10px 16px;font-size:.85rem;max-width:90vw;
  animation:slideUp .2s ease}
.warn-list{background:#FFF8EA;border:1.5px solid #F0DCA8;border-radius:12px;padding:12px 14px;margin-top:14px;font-size:.82rem}
.warn-list b{color:#8A6A0E}
.warn-list li{margin:6px 0 0 16px}

.promo-banner{display:flex;align-items:center;gap:8px;background:var(--green-deep);color:#fff;border-radius:12px;
  padding:10px 12px;font-size:.82rem;margin-bottom:14px}
.promo-banner .money{color:var(--gold)}

@media (min-width:560px){ .view{padding-top:26px} .tabbar{border:1.5px solid var(--line);border-radius:14px 14px 0 0} }

/* ---------- tier progress & boost ---------- */
.boost-banner{display:flex;align-items:center;gap:10px;background:linear-gradient(100deg,var(--green-deep),var(--green));
  color:#fff;border-radius:12px;padding:12px 14px;font-size:.84rem;margin-bottom:14px;box-shadow:var(--shadow)}
.boost-banner .pct{font-family:var(--font-mono);font-weight:700;font-size:1.25rem;color:var(--gold)}
.boost-tag{display:inline-block;background:var(--gold);color:var(--green-deep);font-size:.62rem;font-weight:800;
  border-radius:5px;padding:2px 6px;text-transform:uppercase;letter-spacing:.05em;vertical-align:2px;margin-left:6px}
.rate-strike{text-decoration:line-through;opacity:.55;margin-right:6px}
.progress-wrap{margin-top:10px}
.progress-bar{height:8px;border-radius:999px;background:var(--mint-2);overflow:hidden}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--green),var(--gold));transition:width .4s ease}
.progress-txt{font-size:.78rem;color:#43554D;margin-top:6px}
.tier-table{width:100%;border-collapse:collapse;font-size:.82rem}
.tier-table th{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:#5A6A62;
  text-align:left;padding:6px 4px;border-bottom:1.5px solid var(--line)}
.tier-table td{padding:9px 4px;border-bottom:1px solid var(--mint-2)}
.tier-table tr.me td{background:var(--mint-2);font-weight:700}
.tier-table .money{font-size:.9rem}