@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&family=Poppins:wght@500;600;700;800&display=swap');

:root{
  --bg:#EEF3F1; --bg2:#E4EEEA; --card:#FFFFFF; --text:#0F2A28; --muted:#5C6F6A;
  --accent:#146356; --accent-ink:#0B3A31; --accent-glow:#1F8F79;
  --gold:#B8901F; --gold-soft:#F4E8C8; --gold-bright:#E9C766;
  --border:#DFE6E2; --danger:#B23A3A;
  --shadow:0 14px 34px -16px rgba(15,42,40,.28);
  --shadow-lg:0 24px 50px -20px rgba(15,42,40,.35);
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0A1513; --bg2:#0D1917; --card:#132522; --text:#EAF2EF; --muted:#8FA39D;
    --accent:#2FBF9E; --accent-ink:#0B2620; --accent-glow:#39D9B4;
    --gold:#E3C56B; --gold-soft:#2A2411; --gold-bright:#F3D98A;
    --border:#213734; --danger:#E4776B;
    --shadow:0 14px 36px -16px rgba(0,0,0,.55);
    --shadow-lg:0 26px 56px -18px rgba(0,0,0,.6);
  }
}
html{height:100%;scroll-padding-top:env(safe-area-inset-top,0px);}
*{box-sizing:border-box;}
body{
  margin:0;min-height:100%;color:var(--text);
  background:
    radial-gradient(1100px 500px at 15% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%),
    radial-gradient(900px 500px at 110% 0%, color-mix(in srgb, var(--gold) 12%, transparent), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  background-attachment:fixed;
  font-family:"Hind Siliguri",system-ui,sans-serif;
  display:flex;flex-direction:column;align-items:center;
  -webkit-tap-highlight-color:transparent;
}
.num{font-family:"Poppins","Hind Siliguri",sans-serif;}
input,select{font-family:inherit;}
.hidden{display:none !important;}

/* AUTH */
#authScreen{width:100%;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 20px calc(24px + env(safe-area-inset-bottom,0px));}
.brand{text-align:center;margin-bottom:26px;}
.brand .coin{
  width:72px;height:72px;border-radius:22px;margin:0 auto 14px;
  background:linear-gradient(155deg,var(--accent),var(--accent-ink));
  display:flex;align-items:center;justify-content:center;font-size:32px;
  box-shadow:var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,.25);
  position:relative;
}
.brand .coin::after{
  content:'';position:absolute;inset:0;border-radius:22px;
  border:1px solid rgba(255,255,255,.18);
}
.brand h1{font-size:1.45rem;margin:0 0 4px;font-weight:800;letter-spacing:-.01em;}
.brand p{font-size:.9rem;color:var(--muted);margin:0;}
.authCard{
  width:100%;max-width:380px;background:color-mix(in srgb, var(--card) 92%, transparent);
  backdrop-filter:blur(14px);border:1px solid var(--border);border-radius:26px;padding:8px;
  box-shadow:var(--shadow-lg);
}
.tabs{display:flex;background:var(--bg);border-radius:18px;padding:4px;margin:6px 6px 18px;}
.tabLink,.tabs button{flex:1;border:none;background:transparent;padding:11px 0;border-radius:14px;font-size:.92rem;font-weight:700;color:var(--muted);cursor:pointer;text-align:center;text-decoration:none;transition:.2s;}
.tabLink.active,.tabs button.active{background:linear-gradient(135deg,var(--accent),var(--accent-glow));color:#fff;box-shadow:0 6px 16px -6px rgba(20,99,86,.55);}
.authBody{padding:4px 16px 18px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:.8rem;color:var(--muted);margin-bottom:6px;font-weight:600;}
.field input,.field select{width:100%;padding:13px 14px;border-radius:14px;border:1.5px solid var(--border);background:var(--bg);color:var(--text);font-size:1rem;transition:.15s;}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);}
.hint{font-size:.78rem;color:var(--muted);margin-top:6px;}
.err{color:var(--danger);font-size:.82rem;margin:-4px 0 10px;min-height:1em;}
.btnPrimary{width:100%;background:linear-gradient(135deg,var(--accent),var(--accent-glow));color:#fff;border:none;border-radius:14px;padding:14px;font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit;box-shadow:0 10px 24px -10px rgba(20,99,86,.55);transition:.15s;}
.btnPrimary:active{transform:scale(.98);opacity:.92;}

/* APP SHELL */
#appScreen{width:100%;max-width:520px;display:flex;flex-direction:column;min-height:100%;}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 18px 6px;}
.topbar .hi{font-size:.98rem;}
.wave{display:inline-block;animation:wave 2.2s ease-in-out infinite;transform-origin:70% 70%;}
@keyframes wave{0%,60%,100%{transform:rotate(0)}10%{transform:rotate(14deg)}20%{transform:rotate(-8deg)}30%{transform:rotate(14deg)}40%{transform:rotate(-4deg)}}
.iconbtn{background:var(--card);border:1px solid var(--border);border-radius:12px;width:40px;height:40px;font-size:1rem;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center;text-decoration:none;box-shadow:var(--shadow);}

.totalCard{
  position:relative;overflow:hidden;margin:12px 18px 20px;padding:24px;border-radius:26px;
  background:linear-gradient(150deg,var(--accent) 0%, var(--accent-ink) 100%);
  color:#fff;box-shadow:var(--shadow-lg);
}
.totalCard::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(220px 140px at 90% -10%, rgba(255,255,255,.18), transparent 60%);
}
.totalCard .shine{
  position:absolute;top:-40%;left:-20%;width:60%;height:220%;
  background:linear-gradient(75deg, transparent 40%, rgba(255,255,255,.10) 50%, transparent 60%);
  transform:rotate(8deg);
}
.totalCard .lbl{font-size:.82rem;opacity:.85;margin-bottom:8px;position:relative;letter-spacing:.02em;}
.totalCard .amt{font-size:2.2rem;font-weight:800;position:relative;letter-spacing:-.02em;}
.chipRow{display:flex;gap:10px;margin-top:16px;position:relative;}
.chip{flex:1;background:rgba(255,255,255,.14);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:10px 12px;font-size:.78rem;}
.chip b{display:block;font-size:1rem;margin-top:3px;font-weight:700;}

.screen{padding:0 18px 96px;flex:1;}
.sectionTitle{font-size:.98rem;font-weight:700;margin:6px 0 12px;}

.chipsScroll{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin-bottom:12px;scrollbar-width:none;}
.chipsScroll::-webkit-scrollbar{display:none;}
.chipPill{flex:0 0 auto;border:1.5px solid var(--border);background:var(--card);color:var(--muted);padding:8px 16px;border-radius:999px;font-size:.83rem;font-weight:600;cursor:pointer;white-space:nowrap;font-family:inherit;}
.chipPill.active{background:linear-gradient(135deg,var(--accent),var(--accent-glow));border-color:transparent;color:#fff;box-shadow:0 6px 14px -6px rgba(20,99,86,.5);}

.entry{display:flex;justify-content:space-between;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:18px;padding:14px 16px;margin-bottom:10px;box-shadow:var(--shadow);transition:.15s;}
.entry .left{display:flex;flex-direction:column;gap:3px;min-width:0;}
.entry .left .it{font-weight:700;font-size:.97rem;}
.entry .left .meta{font-size:.78rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.entry .right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.entry .right .bdt{font-weight:700;font-size:.95rem;}
.delBtn{background:none;border:none;color:var(--danger);font-size:1.15rem;cursor:pointer;width:30px;height:30px;border-radius:8px;}
.empty{text-align:center;color:var(--muted);font-size:.88rem;padding:44px 10px;}

.card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:18px;margin-bottom:14px;box-shadow:var(--shadow);}
.card.glow{position:relative;}
.card.glow::before{content:'';position:absolute;top:0;left:18px;right:18px;height:1px;background:linear-gradient(90deg,transparent,var(--gold-bright),transparent);opacity:.5;}
.row{display:flex;gap:10px;}
.row > *{flex:1;}

.payToggle{display:flex;gap:8px;}
.payBtn{flex:1;padding:12px 0;border-radius:12px;border:1.5px solid var(--border);background:var(--bg);color:var(--muted);font-weight:700;font-size:.9rem;cursor:pointer;font-family:inherit;transition:.15s;}
.payBtn.active{background:linear-gradient(135deg,var(--accent),var(--accent-glow));border-color:transparent;color:#fff;box-shadow:0 6px 14px -6px rgba(20,99,86,.5);}

.rateItem{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 4px;border-bottom:1px solid var(--border);}
.rateItem:last-child{border-bottom:none;}
.rateItem .code{font-weight:700;flex:1;font-size:.9rem;}
.rateItem input{flex:1;text-align:right;border:none;background:transparent;color:var(--text);font-size:.95rem;padding:4px;font-family:"Poppins",sans-serif;}
.rateItem input:focus{outline:none;}
.rateItem .curTag{background:var(--gold-soft);color:var(--gold);font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:999px;}
.addCurRow{display:flex;gap:8px;margin-top:12px;}
.addCurRow input,.addCurRow select{border:1.5px solid var(--border);border-radius:12px;padding:10px 10px;background:var(--bg);color:var(--text);font-size:.88rem;}
.addCurRow input:first-child{width:90px;}
.addCurRow input:not(:first-child):last-child,.addCurRow select{flex:1;}
.smallBtn{background:linear-gradient(135deg,var(--gold-soft),var(--gold-soft));color:var(--gold);border:1px solid var(--gold);border-radius:12px;padding:10px 14px;font-weight:700;font-size:.85rem;cursor:pointer;white-space:nowrap;}

.sumRow{display:flex;justify-content:space-between;align-items:center;padding:11px 2px;border-bottom:1px solid var(--border);font-size:.9rem;}
.sumRow:last-child{border-bottom:none;}
.sumRow .code{font-weight:700;}
.sumRow .vals{text-align:right;}
.sumRow .vals .fc{color:var(--muted);font-size:.78rem;}
.sumRow .vals .bd{font-weight:800;font-family:"Poppins",sans-serif;}

.bottomNav{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:center;padding:10px 12px calc(10px + env(safe-area-inset-bottom,0px));z-index:10;}
.bottomNav .inner{
  width:100%;max-width:496px;display:flex;background:color-mix(in srgb, var(--card) 88%, transparent);
  backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:22px;
  box-shadow:var(--shadow-lg);
}
.navBtn{flex:1;border:none;background:none;padding:11px 4px 9px;display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--muted);font-size:.7rem;font-weight:700;cursor:pointer;font-family:inherit;border-radius:16px;transition:.15s;}
.navBtn .ic{font-size:1.3rem;transition:.15s;}
.navBtn.active{color:var(--accent);}
.navBtn.active .ic{transform:translateY(-2px);}