@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&display=swap');

:root {
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-muted: #888;
  --paper: #faf8f4;
  --paper-warm: #f2ede4;
  --accent: #c0392b;
  --accent-soft: #e8c5c0;
  --green: #2d6a4f;
  --border: #d8d0c4;
  --mono: 'DM Mono', monospace;
  --serif: Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: transparent;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.75;
  padding: 1.5rem 1rem;
}

.widget-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--paper);
  padding: 2.5rem 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

.standalone-title {
  text-align: center;
  text-transform: uppercase;
  font-weight: bold;
  font-size: clamp(1.4rem, 4vw, 1.8rem);
  margin-bottom: 2rem;
  color: var(--ink);
  letter-spacing: 0.05em;
  font-family: var(--serif);
}

.input-group { margin-bottom: 1.25rem; }

.input-group label {
  display: block;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
}

.input-row {
  position: relative;
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  background: #fff;
  transition: border-color 0.2s;
}

.input-row:focus-within { border-color: var(--ink); }

.input-row input {
  flex: 1;
  border: none;
  outline: none;
  padding: 0.75rem 1rem;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--ink);
  background: transparent;
  min-width: 0;
  border-radius: 6px 0 0 6px;
}

.input-row .unit {
  padding: 0 1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  white-space: nowrap;
  border-left: 1px solid var(--border);
  display: flex;
  align-items: center;
  background: var(--paper-warm);
  border-radius: 0 6px 6px 0;
}

.input-tooltip {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.65rem 1rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: var(--serif);
  line-height: 1.4;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  width: max-content;
  max-width: 320px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.12);
  z-index: 10;
}

.input-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 1.5rem;
  border-width: 6px;
  border-style: solid;
  border-color: var(--ink) transparent transparent transparent;
}

.input-row.show-tooltip .input-tooltip { opacity: 1; transform: translateY(0); }

.slider-wrap { margin-top: 0.5rem; }

input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink);
  cursor: pointer;
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--ink);
  transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--ink-muted);
  margin-top: 0.35rem;
}

.delay-toggle {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.6rem;
  flex-wrap: wrap;
}

.delay-btn {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.35rem 0.85rem;
  border: 1.5px solid var(--border);
  border-radius: 100px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: all 0.15s;
}

.delay-btn.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 1rem;
}

@media (max-width: 450px) { .input-grid { grid-template-columns: 1fr; } }

.calc-btn {
  width: 100%;
  padding: 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  margin-top: 1.75rem;
  transition: opacity 0.15s, transform 0.1s;
  font-weight: 500;
}

.calc-btn:hover { opacity: 0.88; }
.calc-btn:active { transform: scale(0.99); }

.results { display: none; margin-top: 2.5rem; animation: fadeUp 0.4s ease; }
.results.visible { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 500px) { .cards { grid-template-columns: 1fr; } }

.card { border-radius: 8px; padding: 1.5rem 1.25rem; }
.card-a { background: var(--green); color: #fff; }
.card-b { background: #fff; border: 1.5px solid var(--border); color: var(--ink); }

.card-tag {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 0.5rem;
}

.card-amount {
  font-family: var(--mono);
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 500;
  line-height: 1.1;
  margin-bottom: 0.4rem;
}

.card-a .card-amount { color: #fff; }
.card-b .card-amount { color: var(--ink); }

.card-desc {
  font-size: 0.73rem;
  opacity: 0.75;
  line-height: 1.4;
  font-family: var(--mono);
}

.delta-box {
  background: var(--ink);
  color: var(--paper);
  border-radius: 8px;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.delta-icon { font-size: 1.4rem; flex-shrink: 0; }
.delta-text { font-family: var(--mono); font-size: 0.78rem; line-height: 1.5; color: rgba(255,255,255,0.8); }
.delta-text strong { color: var(--accent-soft); font-size: 1rem; display: block; margin-bottom: 0.15rem; }

.bar-section {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

.bar-section h3 {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 1rem;
  font-weight: 400;
}

.bar-item { margin-bottom: 1rem; }
.bar-item:last-child { margin-bottom: 0; }

.bar-top {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
}

.bar-track { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 3px; width: 0%; transition: width 0.9s cubic-bezier(0.4,0,0.2,1); }
.bar-a { background: var(--green); }
.bar-b { background: var(--accent-soft); }

.result-table-wrap {
  overflow-x: auto;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  margin-bottom: 1.25rem;
  background: #fff;
}

.result-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 0.76rem; }
.result-table thead tr { background: var(--ink); color: var(--paper); }
.result-table thead th { padding: 0.65rem 1rem; text-align: left; font-weight: 400; font-size: 0.63rem; letter-spacing: 0.08em; text-transform: uppercase; }
.result-table tbody td { padding: 0.6rem 1rem; color: var(--ink-soft); border-bottom: 1px solid var(--border); vertical-align: middle; }
.result-table tbody tr:last-child td { border-bottom: none; }
.result-table tbody td:first-child { color: var(--ink); }
.result-table .td-green { color: var(--green); font-weight: 500; }
.result-table .td-red   { color: var(--accent); font-weight: 500; }

.insight-note {
  background: #fff;
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  border-radius: 0 6px 6px 0;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--ink-soft);
  font-style: italic;
}
.insight-note strong { color: var(--accent); font-style: normal; }

@media (max-width: 768px) {
  body { padding: 0; }
  .widget-container { border-radius: 0; border: none; padding: 2rem 1rem; }
  .input-tooltip { left: 1.25rem; right: 1.25rem; width: auto; max-width: none; }
  .input-tooltip::after { left: 50%; transform: translateX(-50%); }
  .result-table-wrap, .bar-section { border-radius: 0; border-left: none; border-right: none; }
  .card-a { border-radius: 6px; }
  .card-b { border-radius: 6px; }
}