/* Money Saved — calm, quiet, legible. System fonts only; no external assets. */

:root {
  color-scheme: light dark;

  --bg: #f5f4ef;
  --bg-glow: #e6efe8;
  --surface: #ffffff;
  --surface-2: #f8f7f3;
  --text: #1b211e;
  --muted: #5f665f;
  --border: #e3e1d9;
  --border-strong: #cfccc2;

  --accent: #2b6a51;
  --accent-hover: #245a45;
  --on-accent: #ffffff;
  --accent-soft: #e3efe8;

  --pos: #1b7346;
  --pos-soft: #e2f1e7;
  --pos-line: #b7dcc4;
  --neg: #b0392f;
  --neg-soft: #f8e6e3;
  --neg-line: #ecc2bc;

  --focus: #3f7fd0;
  --shadow: 0 1px 2px rgb(27 33 30 / 0.04), 0 8px 24px -12px rgb(27 33 30 / 0.14);
  --shadow-lift: 0 2px 4px rgb(27 33 30 / 0.05), 0 14px 30px -14px rgb(27 33 30 / 0.22);

  --radius: 16px;
  --radius-sm: 10px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --font: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-num: "Manrope", ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111412;
    --bg-glow: #17231d;
    --surface: #191d1b;
    --surface-2: #141816;
    --text: #e7ebe7;
    --muted: #9ca59e;
    --border: #2a302c;
    --border-strong: #3a423d;

    --accent: #72c79c;
    --accent-hover: #88d4ad;
    --on-accent: #0e1a14;
    --accent-soft: #1d2d25;

    --pos: #74d19f;
    --pos-soft: #17291f;
    --pos-line: #28503a;
    --neg: #f28b80;
    --neg-soft: #2e1a18;
    --neg-line: #5a2f2a;

    --focus: #8ab8f5;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 10px 28px -14px rgb(0 0 0 / 0.6);
    --shadow-lift: 0 2px 4px rgb(0 0 0 / 0.35), 0 16px 34px -14px rgb(0 0 0 / 0.7);
  }
}

/* ---------- Base ---------- */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background:
    radial-gradient(60rem 28rem at 50% -8rem, var(--bg-glow), transparent 70%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font: 16px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1 { font-size: 1.5rem; line-height: 1.2; letter-spacing: -0.01em; margin: 0; }
p { margin: 0; }
a { color: var(--accent); }

svg { flex: none; }
svg:not([fill]) path, svg:not([fill]) circle {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.muted { color: var(--muted); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: 46rem;
  margin: 0 auto;
  padding: 1rem 1rem 0.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.brand-mark { width: 30px; height: 30px; transition: transform 0.4s var(--ease-spring); }
.brand-mark .tile, .login-mark .tile { fill: var(--accent); stroke: none; }
.brand-mark .leaf, .login-mark .leaf { fill: none; stroke: var(--on-accent); stroke-width: 2.2; }
.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.05); }

nav { display: flex; align-items: center; gap: 0.25rem; }
nav form { margin: 0; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, transform 0.15s;
}
.nav-link svg { width: 18px; height: 18px; }
.nav-link:hover { color: var(--text); background: var(--accent-soft); }
.nav-link:active { transform: scale(0.96); }

.page-home .nav-home,
.page-history .nav-history {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}

/* ---------- Layout ---------- */

main {
  max-width: 32rem;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-history main { max-width: 46rem; }
.page-login main {
  min-height: calc(100dvh - 5rem);
  justify-content: center;
  max-width: 24rem;
  padding-bottom: 5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

/* ---------- Forms ---------- */

form.card { display: flex; flex-direction: column; gap: 1.25rem; }

.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field > label, legend {
  font-weight: 600;
  font-size: 0.95rem;
}

.input {
  width: 100%;
  font: inherit;
  font-size: 1.05rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
}
.input::placeholder { color: var(--muted); opacity: 0.7; }
.input:hover { border-color: var(--muted); }
.input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.input:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }

.money-input { position: relative; }
.money-input .input {
  padding-right: 2.4rem;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 1.2rem;
  font-weight: 550;
}
.money-input .unit {
  position: absolute;
  right: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 1.05rem;
  pointer-events: none;
}

fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 0.6rem; }

/* Segmented choice: real radios stay in the DOM (keyboard + no-JS), visually hidden. */
.options {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 0.5rem;
  row-gap: 0; /* the reveal below carries its own top spacing, so nothing shows when collapsed */
}
.options > input[type="radio"] {
  position: absolute;
  top: 0; left: 0;
  width: 1px; height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.option {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  padding: 0.75rem 0.75rem 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s, transform 0.15s var(--ease-out);
}
.option svg {
  width: 22px; height: 22px;
  margin-bottom: 0.35rem;
  color: var(--muted);
  transition: color 0.2s, transform 0.35s var(--ease-spring);
}
.option-title { font-weight: 600; line-height: 1.25; }
.option-sub { font-size: 0.82rem; color: var(--muted); line-height: 1.3; }

.option:hover { border-color: var(--muted); }
.option:active { transform: scale(0.97); }

.options > input:checked + .option {
  border-color: var(--tone);
  background: var(--tone-soft);
  box-shadow: inset 0 0 0 1px var(--tone);
}
.options > input:checked + .option svg { color: var(--tone); transform: scale(1.1); }
.options > input:focus-visible + .option { outline: 2px solid var(--focus); outline-offset: 2px; }

.option-none { --tone: var(--pos); --tone-soft: var(--pos-soft); }
.option-all { --tone: var(--neg); --tone-soft: var(--neg-soft); }
.option-other { --tone: var(--accent); --tone-soft: var(--accent-soft); }

/* "Cheaper" amount: collapsed until its radio is checked. Pure CSS, works without JS. */
.other {
  grid-column: 1 / -1;
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  visibility: hidden;
  transition:
    grid-template-rows 0.35s var(--ease-out),
    opacity 0.2s,
    visibility 0s linear 0.35s;
}
.other-inner { min-height: 0; overflow: hidden; margin: 0 -4px; }
.other-field { padding: 0.75rem 4px 4px; }
#mode-other:checked ~ .other {
  grid-template-rows: 1fr;
  opacity: 1;
  visibility: visible;
  transition:
    grid-template-rows 0.35s var(--ease-out),
    opacity 0.3s 0.05s,
    visibility 0s;
}

/* Live preview (shown by app.js only). */
.preview {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.8rem 0.9rem;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px dashed var(--border-strong);
  transition: background-color 0.3s, border-color 0.3s;
}
.preview[hidden] { display: none; }
.preview-row { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.preview-label { color: var(--muted); font-size: 0.9rem; }
.preview-value {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  font-size: 1.15rem;
  color: var(--muted);
  transition: color 0.25s;
}
.preview.pos { background: var(--pos-soft); border-color: var(--pos-line); }
.preview.neg { background: var(--neg-soft); border-color: var(--neg-line); }
.preview.pos .preview-value { color: var(--pos); }
.preview.neg .preview-value { color: var(--neg); }

/* Centred meter: grows right (gain) or left (loss), scaled by |delta| / price. */
.meter {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}
.meter::after {
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 2px;
  margin-left: -1px;
  background: var(--surface);
}
.meter-fill {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 50%;
  border-radius: 999px;
  background: var(--muted);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 0.4s var(--ease-out), background-color 0.25s;
}
.preview.pos .meter-fill { background: var(--pos); }
.preview.neg .meter-fill { left: 0; transform-origin: right center; background: var(--neg); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font: inherit;
  font-weight: 600;
  font-size: 1.02rem;
  padding: 0.8rem 1.2rem;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s, box-shadow 0.2s, transform 0.15s var(--ease-out);
}
.btn svg { width: 20px; height: 20px; transition: transform 0.3s var(--ease-out); }
.btn:active { transform: translateY(1px) scale(0.985); }

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 1px 0 rgb(255 255 255 / 0.15) inset, 0 6px 16px -8px var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:hover svg { transform: translateX(3px); }
.btn-primary[aria-busy="true"] { opacity: 0.75; cursor: progress; }

.btn-quiet { background: var(--accent-soft); color: var(--accent); }
.btn-quiet:hover { background: var(--pos-line); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 36px; height: 36px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, transform 0.15s;
}
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn:hover { color: var(--neg); background: var(--neg-soft); }
.icon-btn:active { transform: scale(0.9); }

.alert {
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  background: var(--neg-soft);
  border: 1px solid var(--neg-line);
  color: var(--neg);
  font-weight: 500;
}

/* ---------- Login ---------- */

.login-card { padding: 2rem 1.5rem 1.5rem; gap: 1.1rem; }
.login-mark { width: 44px; height: 44px; margin: 0 auto 0.1rem; }
.login-head { text-align: center; display: flex; flex-direction: column; gap: 0.3rem; }
.login-head .muted { font-size: 0.95rem; }

/* ---------- Balance hero ---------- */

.hero {
  --tone: var(--pos);
  --tone-soft: var(--pos-soft);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 1.75rem 1rem 1.5rem;
  text-align: center;
  border-radius: calc(var(--radius) + 4px);
  background:
    radial-gradient(120% 90% at 50% 0%, var(--tone-soft), transparent 75%),
    var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero.neg { --tone: var(--neg); --tone-soft: var(--neg-soft); }

.hero-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-amount {
  font-family: var(--font-num);
  font-size: clamp(2.6rem, 13vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--tone);
  transition: color 0.4s;
  white-space: nowrap;
}
.hero-amount.bump { animation: bump 0.5s var(--ease-spring); }
.hero-hint { color: var(--muted); font-size: 0.9rem; }

.chip {
  display: inline-flex;
  align-items: baseline;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--pos-line);
  background: var(--pos-soft);
  color: var(--pos);
  font-size: 0.9rem;
}
.chip.neg { border-color: var(--neg-line); background: var(--neg-soft); color: var(--neg); }
.chip-delta { font-family: var(--font-num); font-weight: 700; font-variant-numeric: tabular-nums; }
.chip-note { color: var(--muted); }

/* ---------- History ---------- */

.page-head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.5rem 1rem; flex-wrap: wrap; }
.page-head .muted { font-size: 0.95rem; }

.history-head,
.entry-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 6.5rem 6.5rem 7.5rem 2.5rem;
  align-items: center;
  gap: 0.75rem;
}
.history-head {
  padding: 0 0.75rem 0 1rem;
  margin-bottom: -0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

.history {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.entry-row {
  position: relative;
  padding: 0.7rem 0.75rem 0.7rem 1rem;
  border-top: 1px solid var(--border);
  transition: background-color 0.2s;
}
.entry-row:first-child { border-top: 0; }
.entry-row:hover { background: var(--surface-2); }
.entry-row::before {
  content: "";
  position: absolute;
  left: 0; top: 0.7rem; bottom: 0.7rem;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--pos);
  opacity: 0.8;
}
.entry-row.neg::before { background: var(--neg); }

.when { color: var(--text); font-size: 0.95rem; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.price, .spent { color: var(--muted); font-size: 0.95rem; }
.k { display: none; }

.pill {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-family: var(--font-num);
  font-weight: 650;
  font-size: 0.92rem;
  background: var(--pos-soft);
  color: var(--pos);
}
.entry-row.neg .pill { background: var(--neg-soft); color: var(--neg); }

.del { margin: 0; justify-self: end; }

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  padding: 2.5rem 1.25rem;
  text-align: center;
  color: var(--muted);
}
.empty svg { width: 40px; height: 40px; color: var(--accent); }

/* Card layout on narrow screens. */
@media (max-width: 600px) {
  .history-head { display: none; }
  .history { background: transparent; border: 0; box-shadow: none; overflow: visible; display: flex; flex-direction: column; gap: 0.6rem; }
  .entry-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "when  del"
      "delta delta"
      "price spent";
    gap: 0.35rem 0.75rem;
    padding: 0.85rem 0.6rem 0.9rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
  }
  .entry-row:first-child { border-top: 1px solid var(--border); }
  .entry-row::before { top: 1rem; bottom: 1rem; }
  .when { grid-area: when; font-size: 0.88rem; color: var(--muted); }
  .del { grid-area: del; margin: -0.35rem 0; }
  .delta { grid-area: delta; text-align: left; }
  .price { grid-area: price; text-align: left; font-size: 0.88rem; }
  .spent { grid-area: spent; text-align: right; font-size: 0.88rem; padding-right: 0.4rem; }
  .k { display: inline; color: var(--muted); opacity: 0.8; margin-right: 0.2rem; }
  .pill { font-size: 1.15rem; padding: 0.15rem 0.7rem; }
}

/* ---------- Small phones ---------- */

@media (max-width: 420px) {
  .brand-name { display: none; }
  .nav-link { padding: 0.45rem 0.65rem; }
  .card { padding: 1rem; }
  .options { grid-template-columns: minmax(0, 1fr); }
  .option ~ .option { margin-top: 0.5rem; }
  .option {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-areas: "icon title" "icon sub";
    column-gap: 0.7rem;
    align-items: center;
    padding: 0.65rem 0.8rem;
  }
  .option svg { grid-area: icon; margin: 0; }
  .option-title { grid-area: title; }
  .option-sub { grid-area: sub; }
}

@media (max-width: 340px) {
  .nav-logout span { display: none; }
}

/* ---------- Motion ---------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
@keyframes chip-in {
  0% { opacity: 0; transform: translateY(8px) scale(0.9); }
  60% { opacity: 1; transform: translateY(-1px) scale(1.03); }
  100% { opacity: 1; transform: none; }
}
@keyframes bump {
  0% { transform: scale(1); }
  40% { transform: scale(1.06); }
  100% { transform: scale(1); }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(2px); }
}
@keyframes row-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }

  .rise { animation: rise 0.5s var(--ease-out) both; }
  .rise-2 { animation-delay: 0.08s; }
  .chip { animation: chip-in 0.6s var(--ease-out) 0.35s both; }
  .alert { animation: shake 0.4s ease-in-out 0.1s; }
  .entry-row { animation: row-in 0.45s var(--ease-out) both; animation-delay: calc(min(var(--i, 0), 14) * 40ms + 80ms); }
  .history-head { animation: rise 0.4s var(--ease-out) 0.05s both; }
}

@keyframes row-out {
  to { opacity: 0; transform: translateX(-12px); }
}
.entry-row.leaving { animation: row-out 0.26s ease-in forwards; pointer-events: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}