/* ══════════════════════════════════════════════════════════════
   Expense Tracker — theme
   ══════════════════════════════════════════════════════════════ */
:root{
  --bg:#070b16;
  --panel:rgba(24,33,54,.72);
  --panel-solid:#151d30;
  --line:rgba(120,140,180,.22);
  --ink:#e8eefc;
  --muted:#8ea0c4;
  --primary:#22d3ee;
  --primary-2:#6366f1;
  --ok:#34d399;
  --bad:#f87171;
  --warn:#fbbf24;
  --radius:16px;
  --shadow:0 18px 45px rgba(0,0,0,.45);
  /* category palette */
  --c-food:#fb923c;      --c-travel:#38bdf8;
  --c-rent:#a78bfa;      --c-utilities:#facc15;
  --c-health:#34d399;    --c-shopping:#f472b6;
  --c-entertainment:#22d3ee; --c-other:#94a3b8;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;color:var(--ink);
  /* vibrant "aurora" background: layered colour glows over a warm dark base */
  background:
    radial-gradient(1100px 760px at 8% 4%,  rgba(255, 20, 147, .42), transparent 62%),
    radial-gradient(980px 700px at 94% 10%, rgba(255, 145, 0,  .38), transparent 62%),
    radial-gradient(900px 900px at 86% 92%, rgba(0, 235, 200,  .32), transparent 62%),
    radial-gradient(1040px 820px at 10% 96%, rgba(150, 60, 255, .42), transparent 62%),
    radial-gradient(760px 620px at 52% 46%, rgba(255, 80, 200, .18),  transparent 68%),
    linear-gradient(155deg, #1b0620 0%, #241040 36%, #101038 70%, #150a26 100%);
  background-attachment:fixed;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;
  overflow-x:hidden;
}

/* animated background orbs */
.orbs{position:fixed;inset:0;z-index:-1;overflow:hidden}
.orbs span{
  position:absolute;display:block;border-radius:50%;filter:blur(90px);opacity:.5;
  animation:float 22s ease-in-out infinite;
}
.orbs span:nth-child(1){width:560px;height:560px;background:#ff1493;top:-170px;left:-130px}
.orbs span:nth-child(2){width:460px;height:460px;background:#ff9500;bottom:-150px;right:-90px;animation-delay:-7s}
.orbs span:nth-child(3){width:400px;height:400px;background:#00e5c8;top:38%;left:58%;animation-delay:-14s;opacity:.34}
.orbs span:nth-child(4){width:340px;height:340px;background:#8b5cf6;top:6%;left:44%;animation-delay:-4s;opacity:.42}
.orbs span:nth-child(5){width:300px;height:300px;background:#c6ff00;bottom:5%;left:12%;animation-delay:-18s;opacity:.22}
@keyframes float{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(40px,-50px) scale(1.12)}
}

/* ── layout ── */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 26px;border-bottom:1px solid var(--line);
  background:rgba(9,13,26,.6);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20;
}
.brand{display:flex;align-items:center;gap:14px}
.logo{font-size:30px;filter:drop-shadow(0 0 14px rgba(34,211,238,.6))}
.brand h1{margin:0;font-size:19px;letter-spacing:.3px}
.tag{margin:2px 0 0;font-size:11.5px;color:var(--muted);letter-spacing:.6px;text-transform:uppercase}
.user-area{display:flex;align-items:center;gap:10px}

main{max-width:1180px;margin:0 auto;padding:26px 20px 80px}

/* ── cards ── */
.card{
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
  animation:rise .5s cubic-bezier(.2,.8,.2,1) both;
}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.card-head h3{margin:0;font-size:15px;letter-spacing:.3px}
.wrap-head{flex-wrap:wrap}
.count{color:var(--muted);font-weight:400}
.muted{color:var(--muted);font-size:13px}
.hidden{display:none !important}
.row{display:flex;gap:10px;flex-wrap:wrap}
.grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;margin-bottom:18px}
@media (max-width:900px){
  .grid{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2,1fr)}
  .filters{width:100%}
}

/* ── buttons ── */
.btn{
  font:inherit;font-weight:600;cursor:pointer;border:0;border-radius:11px;
  padding:11px 16px;color:#04121f;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  transition:transform .12s ease,box-shadow .2s ease,opacity .2s;
  box-shadow:0 8px 22px rgba(34,211,238,.28);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.99)}
.btn.ghost{
  background:transparent;color:var(--ink);border:1px solid var(--line);box-shadow:none;
}
.btn.ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn.small{padding:8px 12px;font-size:12.5px}
.btn.tiny{padding:6px 10px;font-size:12px;border-radius:9px}
.btn.danger{background:transparent;color:var(--bad);border:1px solid rgba(248,113,113,.5);box-shadow:none}
.btn.danger:hover{background:rgba(248,113,113,.12)}
.btn[disabled]{opacity:.55;cursor:progress}

/* ── inputs ── */
input,select{
  font:inherit;width:100%;padding:11px 12px;border-radius:11px;
  border:1px solid var(--line);background:rgba(7,11,22,.72);color:var(--ink);
  transition:border-color .15s,box-shadow .15s;
}
input::placeholder{color:#5f7093}
input:focus,select:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(34,211,238,.18);
}
select{cursor:pointer}
.field{display:flex;flex-direction:column;gap:6px}
.field>span{font-size:11.5px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-grid .span2{grid-column:span 2}
.hint{font-size:12.5px;color:var(--muted);margin-bottom:0}
code{background:rgba(34,211,238,.12);color:#a5f3fc;padding:1px 6px;border-radius:6px;font-size:12px}

/* ── auth ── */
.auth-wrap{display:flex;justify-content:center;padding-top:6vh}
.auth-card{width:min(440px,100%);display:flex;flex-direction:column;gap:14px}
.auth-card h2{margin:0}
.auth-card .row{margin-top:4px}

/* ── KPI cards ── */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.kpi{
  background:var(--panel);backdrop-filter:blur(14px);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 18px;position:relative;overflow:hidden;
  animation:rise .5s cubic-bezier(.2,.8,.2,1) both;
}
.kpi::after{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--k,var(--primary))}
.kpi .k-label{font-size:11.5px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted)}
.kpi .k-value{font-size:26px;font-weight:700;margin-top:6px;letter-spacing:-.5px}
.kpi .k-sub{font-size:12px;color:var(--muted);margin-top:3px}

/* ── chart ── */
.chart{display:flex;flex-direction:column;gap:13px;min-height:120px}
.bar-row{display:grid;grid-template-columns:96px 1fr 92px;align-items:center;gap:12px}
.bar-label{font-size:12.5px;color:var(--ink);display:flex;align-items:center;gap:7px}
.dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto;background:var(--d)}
.bar-track{height:11px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden}
.bar-fill{
  height:100%;width:0;border-radius:99px;
  background:var(--d);
  transition:width .9s cubic-bezier(.2,.8,.2,1);
}
.bar-val{text-align:right;font-size:12.5px;font-variant-numeric:tabular-nums;color:var(--muted)}
.bar-val b{color:var(--ink)}

/* ── expense list ── */
.list{display:flex;flex-direction:column;gap:10px}
.item{
  display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:14px;
  padding:13px 15px;border-radius:13px;
  background:rgba(9,13,26,.55);border:1px solid var(--line);
  transition:transform .14s ease,border-color .2s,background .2s;
  animation:rise .35s ease both;
}
.item:hover{transform:translateX(3px);border-color:rgba(34,211,238,.45);background:rgba(15,22,40,.8)}
.item .cat-badge{
  font-size:11.5px;font-weight:700;letter-spacing:.4px;padding:5px 11px;border-radius:99px;
  background:rgba(255,255,255,.06);color:var(--d);
  border:1px solid rgba(255,255,255,.14);white-space:nowrap;
}
.item .main{min-width:0}
.item .note{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item .meta{font-size:11.5px;color:var(--muted);margin-top:3px;display:flex;gap:10px;flex-wrap:wrap}
.item .amt{font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.item .actions{display:flex;gap:7px}
.icon-btn{
  background:transparent;border:1px solid var(--line);color:var(--muted);
  width:34px;height:34px;border-radius:10px;cursor:pointer;font-size:14px;
  display:grid;place-items:center;transition:.16s;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-1px)}
.icon-btn.del:hover{color:var(--bad);border-color:var(--bad)}
.receipt-chip{
  font-size:11px;padding:3px 9px;border-radius:99px;cursor:pointer;
  background:rgba(52,211,153,.14);color:var(--ok);border:1px solid rgba(52,211,153,.35);
}
.receipt-chip:hover{background:rgba(52,211,153,.25)}

.empty{text-align:center;padding:44px 18px;color:var(--muted)}
.empty .big{font-size:42px;display:block;margin-bottom:10px;opacity:.7}

/* ── toasts ── */
.toasts{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:10px;z-index:60}
.toast{
  padding:12px 16px;border-radius:12px;font-size:13.5px;font-weight:500;
  background:var(--panel-solid);border:1px solid var(--line);border-left:4px solid var(--primary);
  box-shadow:var(--shadow);animation:slide .28s ease both;max-width:330px;
}
.toast.ok{border-left-color:var(--ok)}
.toast.bad{border-left-color:var(--bad)}
@keyframes slide{from{opacity:0;transform:translateX(26px)}to{opacity:1;transform:none}}

/* ── modal ── */
.modal-root{
  position:fixed;inset:0;z-index:70;display:grid;place-items:center;
  background:rgba(3,6,15,.72);backdrop-filter:blur(6px);padding:20px;
}
.modal{
  width:min(520px,100%);background:var(--panel-solid);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);
  animation:pop .26s cubic-bezier(.2,.9,.3,1.2) both;max-height:86vh;overflow:auto;
}
@keyframes pop{from{opacity:0;transform:scale(.94) translateY(10px)}to{opacity:1;transform:none}}
.modal h3{margin:0 0 16px}
.modal .row{margin-top:18px;justify-content:flex-end}
.modal img{max-width:100%;border-radius:12px;border:1px solid var(--line)}

/* ── receipt scan (V3) ── */
.scan-hint{margin:-2px 0 14px;font-size:13px;line-height:1.5}
.item.is-pending{opacity:.75}
.scan-hint b{color:var(--primary-2)}