:root {
  --bg: #0a0d11;
  --panel: #10151b;
  --panel2: #141a21;
  --line: #202a33;
  --txt: #dce4ea;
  --mut: #7d8b97;
  --mut2: #57636c;
  --accent: #5eead4;
  --accent-dim: #1f7566;
  --income: #4ade80;
  --expense: #fb7185;
  --transfer: #7dd3fc;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; min-height: 100%;
  background: var(--bg); color: var(--txt);
  font-family: "PingFang SC", "Inter", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
}
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
a { color: inherit; }

/* ---------- login ---------- */
#loginScreen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 30% 20%, #132029, var(--bg) 60%);
}
.login-box {
  width: 320px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px 28px;
  text-align: center;
}
.login-box .brand { font-size: 20px; font-weight: 800; margin-bottom: 4px; }
.login-box .brand span { color: var(--accent); }
.login-box p { color: var(--mut); font-size: 12.5px; margin: 0 0 20px; }
.login-box input {
  width: 100%; background: rgba(255,255,255,0.06); border: 1px solid var(--line);
  border-radius: 8px; color: var(--txt); padding: 10px 12px; font-size: 14px; margin-bottom: 12px;
}
.login-box button {
  width: 100%; border: none; border-radius: 8px; background: var(--accent); color: #05222b;
  font-weight: 700; padding: 10px; font-size: 14px;
}
.login-error { color: var(--expense); font-size: 12px; min-height: 16px; margin-top: 8px; }

/* ---------- app shell ---------- */
#app { display: none; }
#app.show { display: flex; min-height: 100vh; }

nav.side {
  width: 172px; flex: 0 0 auto;
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 20px 12px;
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
nav.side .brand { font-weight: 800; font-size: 15px; padding: 0 8px 20px; }
nav.side .brand span { color: var(--accent); }
nav.side .tab {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 8px;
  color: var(--mut); font-size: 13px; cursor: pointer;
  margin-bottom: 2px;
}
nav.side .tab:hover { background: rgba(255,255,255,0.05); color: var(--txt); }
nav.side .tab.active { background: rgba(94,234,212,0.12); color: var(--accent); font-weight: 600; }
nav.side .spacer { flex: 1; }
nav.side .logout {
  font-size: 12px; color: var(--mut2); padding: 9px 10px; cursor: pointer;
}
nav.side .logout:hover { color: var(--expense); }

main { flex: 1; min-width: 0; padding: 28px 32px; }
main h1 { font-size: 20px; margin: 0 0 20px; }

.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: 2fr 1fr; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
}
.card h3 {
  margin: 0 0 14px; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--mut); font-weight: 700;
}
.stat-value { font-size: 26px; font-weight: 800; }
.stat-value.income { color: var(--income); }
.stat-value.expense { color: var(--expense); }
.stat-sub { font-size: 11.5px; color: var(--mut); margin-top: 4px; }

/* transactions */
.toolbar { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select {
  background: var(--panel2); border: 1px solid var(--line); border-radius: 8px;
  color: var(--txt); padding: 7px 10px; font-size: 12.5px;
}
.btn {
  border: none; border-radius: 8px; padding: 8px 14px; font-size: 12.5px; font-weight: 700;
  background: var(--accent); color: #05222b;
}
.btn.secondary { background: var(--panel2); color: var(--txt); border: 1px solid var(--line); font-weight: 600; }
.btn.danger { background: rgba(251,113,133,0.15); color: var(--expense); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--mut); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; padding: 8px 10px; border-bottom: 1px solid var(--line); }
td { padding: 9px 10px; border-bottom: 1px solid var(--line); }
tr:hover td { background: rgba(255,255,255,0.02); }
.amt { font-weight: 700; }
.amt.income { color: var(--income); }
.amt.expense { color: var(--expense); }
.amt.transfer { color: var(--transfer); }
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  background: rgba(255,255,255,0.05); border-radius: 999px; padding: 3px 9px; font-size: 11.5px;
}
.row-actions { display: flex; gap: 6px; }
.row-actions button { background: none; border: none; color: var(--mut2); font-size: 13px; }
.row-actions button:hover { color: var(--accent); }

/* budgets */
.budget-item { margin-bottom: 14px; }
.budget-item .top { display: flex; justify-content: space-between; font-size: 12.5px; margin-bottom: 6px; }
.budget-bar { height: 8px; border-radius: 4px; background: var(--panel2); overflow: hidden; }
.budget-bar .fill { height: 100%; border-radius: 4px; transition: width 0.3s; }

/* accounts / categories grid */
.item-card {
  background: var(--panel2); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px; display: flex; flex-direction: column; gap: 8px;
}
.item-card .icon { font-size: 22px; }
.item-card .name { font-weight: 700; font-size: 14px; }
.item-card .meta { font-size: 11.5px; color: var(--mut); }
.item-card .actions { display: flex; gap: 6px; margin-top: 4px; }

/* modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(4,6,9,0.65);
  display: none; align-items: center; justify-content: center; z-index: 50;
}
.modal-overlay.open { display: flex; }
.modal {
  width: 380px; max-width: 92vw; max-height: 86vh; overflow-y: auto;
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px;
}
.modal h3 { margin: 0 0 16px; font-size: 15px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 11.5px; color: var(--mut); margin-bottom: 5px; }
.field input, .field select, .field textarea {
  width: 100%; background: rgba(255,255,255,0.06); border: 1px solid var(--line);
  border-radius: 8px; color: var(--txt); padding: 8px 10px; font-size: 13px;
}
.field .type-toggle { display: flex; gap: 6px; }
.field .type-toggle button {
  flex: 1; border: 1px solid var(--line); background: var(--panel2); color: var(--mut);
  border-radius: 8px; padding: 8px; font-size: 12.5px;
}
.field .type-toggle button.active.income { background: rgba(74,222,128,0.15); color: var(--income); border-color: var(--income); }
.field .type-toggle button.active.expense { background: rgba(251,113,133,0.15); color: var(--expense); border-color: var(--expense); }
.field .type-toggle button.active.transfer { background: rgba(125,211,252,0.15); color: var(--transfer); border-color: var(--transfer); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }

.empty { color: var(--mut2); font-size: 12.5px; text-align: center; padding: 30px 0; }
.pager { display: flex; justify-content: center; gap: 10px; margin-top: 14px; font-size: 12.5px; color: var(--mut); }

::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.14); border-radius: 4px; }

@media (max-width: 900px) {
  #app.show { flex-direction: column; }
  nav.side { width: 100%; height: auto; position: static; flex-direction: row; overflow-x: auto; padding: 10px; }
  nav.side .brand, nav.side .spacer, nav.side .logout { display: none; }
  main { padding: 16px; }
  .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
}