/*
  Palette inspired by Brazilian real banknotes:
  jade for sales (money in), R$100-note blue for payments (money out),
  a touch of R$20 sun yellow for the commission rate.
*/
:root {
  --bg: #eaf1ed;
  --surface: #ffffff;
  --surface-sunk: #f3f7f5;
  --border: #d3e0d9;
  --ink: #14302a;
  --muted: #5b736b;

  --sale: #0f8a5f;
  --sale-strong: #0b6e4b;
  --sale-soft: #dcf1e7;
  --payment: #3a4fc9;
  --payment-strong: #2c3da6;
  --payment-soft: #e2e6fb;
  --sun: #f5c542;
  --danger: #c0392b;

  --note-bg: #0d5c45;
  --note-ink: #f2fbf6;
  --note-muted: #a9d6c3;
  --note-line: rgb(255 255 255 / 0.08);

  --radius-lg: 22px;
  --radius: 14px;
  --radius-sm: 10px;
  --font: "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1a16;
    --surface: #13241f;
    --surface-sunk: #0f1e1a;
    --border: #23392f;
    --ink: #e6f2ec;
    --muted: #8fa89e;

    --sale: #3fcf95;
    --sale-strong: #5fe0aa;
    --sale-soft: #143429;
    --payment: #8c9bff;
    --payment-strong: #a9b4ff;
    --payment-soft: #1e2547;
    --sun: #f5c542;
    --danger: #ff8a7a;

    --note-bg: #0f4a39;
    --note-ink: #effaf4;
    --note-muted: #9fcdb9;
    --note-line: rgb(255 255 255 / 0.07);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
}

[hidden] { display: none !important; }

h1, h2 { margin: 0; line-height: 1.15; }
h1 { font-size: 1.375rem; font-weight: 750; letter-spacing: -0.01em; }
h2 { font-size: 1.125rem; font-weight: 700; margin-bottom: 14px; }

:focus-visible { outline: 3px solid var(--sun); outline-offset: 2px; }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 8px 16px 56px;
  display: grid;
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

/* Top bar */
.topbar {
  max-width: 880px;
  margin: 0 auto;
  padding: 22px 16px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ---------- Banknote summary: the one bold element ---------- */
.note {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  color: var(--note-ink);
  background-color: var(--note-bg);
  border-radius: var(--radius-lg);
  padding: 26px 22px 18px;
}
/* Guilloche-like engraving, as on printed currency */
.note::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    repeating-radial-gradient(circle at 105% -10%, transparent 0 9px, var(--note-line) 9px 10px),
    repeating-radial-gradient(circle at -10% 120%, transparent 0 13px, var(--note-line) 13px 14px);
}
/* Inner frame, like a banknote border */
.note::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgb(255 255 255 / 0.14);
  border-radius: calc(var(--radius-lg) - 8px);
  pointer-events: none;
}

.note-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 20px;
}
.note-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--note-muted);
}
.note-value {
  font-size: clamp(2.5rem, 11vw, 3.75rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.note-strip {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid rgb(255 255 255 / 0.16);
  padding-top: 14px;
}
.note-strip > div { min-width: 0; padding-right: 10px; }
.note-strip > div + div {
  border-left: 1px solid rgb(255 255 255 / 0.16);
  padding-left: 12px;
}
.note-strip dt {
  font-size: 0.78rem;
  color: var(--note-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.note-strip dd {
  margin: 2px 0 0;
  font-size: 1.05rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.rate {
  background: var(--sun);
  color: #3b2a00;
  font-weight: 700;
  font-size: 0.72rem;
  padding: 1px 7px;
  border-radius: 999px;
}

@media (max-width: 420px) {
  .note-strip { grid-template-columns: 1fr; gap: 10px; }
  .note-strip > div + div { border-left: 0; padding-left: 0; }
  .note-strip > div {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding-right: 0;
  }
  .note-strip dd { margin: 0; }
}

/* ---------- Forms ---------- */
.forms {
  display: grid;
  gap: 18px;
}
@media (min-width: 720px) {
  .forms { grid-template-columns: 1fr 1fr; }
}

.entry-form, .login-card {
  display: flex;
  flex-direction: column;
}

/* Each form carries its own colour: green for money in, blue for money out */
.form-sale { --tone: var(--sale); --tone-strong: var(--sale-strong); --tone-soft: var(--sale-soft); }
.form-payment { --tone: var(--payment); --tone-strong: var(--payment-strong); --tone-soft: var(--payment-soft); }

.entry-form { border-top: 4px solid var(--tone); }
.entry-form h2 { color: var(--tone-strong); }

label {
  font-size: 0.9rem;
  font-weight: 600;
  margin: 8px 0 6px;
}
.optional { color: var(--muted); font-weight: 400; }

input {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--surface-sunk);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus {
  border-color: var(--tone, var(--sale));
  box-shadow: 0 0 0 3px var(--tone-soft, var(--sale-soft));
}
input[aria-invalid="true"] { border-color: var(--danger); }

.money-input { position: relative; }
.money-input span {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-weight: 600;
  pointer-events: none;
}
.money-input input {
  padding-left: 44px;
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  font-weight: 700;
}

.form-error {
  min-height: 1.25em;
  margin: 8px 0 4px;
  font-size: 0.875rem;
  color: var(--danger);
}

/* ---------- Buttons ---------- */
.btn {
  font: inherit;
  font-weight: 700;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.6; cursor: progress; }
.btn-sale, .btn-primary { background: var(--sale); color: #fff; }
.btn-sale:hover, .btn-primary:hover { background: var(--sale-strong); }
.btn-payment { background: var(--payment); color: #fff; }
.btn-payment:hover { background: var(--payment-strong); }
@media (prefers-color-scheme: dark) {
  .btn-sale, .btn-primary, .btn-payment { color: #07140f; }
}
.btn-ghost {
  background: transparent;
  color: var(--muted);
  padding: 8px 12px;
}
.btn-ghost:hover { color: var(--ink); background: var(--surface); }

/* ---------- Login ---------- */
.login {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 16px;
}
.login-card {
  width: 100%;
  max-width: 360px;
  border-top: 4px solid var(--sale);
}
.login-card h1 { margin-bottom: 14px; text-align: center; color: var(--sale-strong); }
.login-card input { text-align: center; font-size: 1.375rem; letter-spacing: 0.3em; }

/* ---------- History ---------- */
.muted { color: var(--muted); margin: 0; }

.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.history-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.history-item:first-child { border-top: 0; }

.history-main { min-width: 0; }
.history-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 10px;
  font-size: 0.82rem;
  color: var(--muted);
}
.history-description {
  margin-top: 2px;
  overflow-wrap: anywhere;
}
.history-description.empty { color: var(--muted); font-style: italic; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 650;
}
.tag::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: currentColor;
}
.tag-sale { color: var(--sale); }
.tag-payment { color: var(--payment); }

.history-amount {
  font-weight: 750;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.history-amount.sale { color: var(--sale); }
.history-amount.payment { color: var(--payment); }

.delete-btn {
  font: inherit;
  font-size: 0.82rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
}
.delete-btn:hover { color: var(--danger); border-color: var(--danger); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}