:root {
  --bg: #f5f0eb;
  --bg-card: #faf7f3;
  --mocha: #a47764;
  --mocha-light: #c9a888;
  --mocha-pale: #e8ddd2;
  --mocha-deep: #7a5a48;
  --brown-dark: #3d2c1e;
  --brown-mid: #5a4535;
  --brown-soft: #8b7355;
  --white: #fffcf8;
  --shadow: rgba(61, 44, 30, 0.08);
  --shadow-md: rgba(61, 44, 30, 0.12);
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--brown-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
  opacity: 0;
  transition: opacity 0.6s ease;
}

body.ready {
  opacity: 1;
}

/* noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: 520px;
}

/* ── Header ── */
header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--mocha-pale);
}

header h1 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600;
  font-size: 1.65rem;
  color: var(--brown-dark);
  letter-spacing: -0.02em;
}

#lang-toggle {
  background: none;
  border: 1px solid var(--mocha-pale);
  color: var(--brown-soft);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.35rem 0.8rem;
  border-radius: 2rem;
  cursor: pointer;
  transition: all 0.25s ease;
  letter-spacing: 0.04em;
}

#lang-toggle:hover {
  border-color: var(--mocha);
  color: var(--mocha-deep);
  background: var(--white);
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.tab {
  flex: 1;
  padding: 0.65rem 1rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--brown-soft);
  background: var(--bg-card);
  border: 1px solid var(--mocha-pale);
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.tab:hover {
  border-color: var(--mocha-light);
  color: var(--mocha-deep);
}

.tab.active {
  background: var(--mocha);
  border-color: var(--mocha);
  color: var(--white);
}

/* ── Card ── */
.card {
  background: var(--bg-card);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow:
    0 1px 3px var(--shadow),
    0 8px 24px var(--shadow);
  border: 1px solid rgba(164, 119, 100, 0.08);
}

/* ── Form fields ── */
.field {
  margin-bottom: 1.5rem;
}

.field:last-child {
  margin-bottom: 0;
}

.field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--brown-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.field select,
.field input[type="text"] {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--brown-dark);
  background: var(--white);
  border: 1px solid var(--mocha-pale);
  border-radius: 0.75rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  appearance: none;
  -webkit-appearance: none;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238b7355' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.field select:focus,
.field input[type="text"]:focus {
  border-color: var(--mocha);
  box-shadow: 0 0 0 3px rgba(164, 119, 100, 0.12);
}

.field input[type="text"]::placeholder {
  color: var(--mocha-pale);
  font-weight: 300;
}

/* ── Textarea ── */
textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--brown-dark);
  background: var(--white);
  border: 1px solid var(--mocha-pale);
  border-radius: 0.75rem;
  outline: none;
  resize: vertical;
  min-height: 120px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea::placeholder {
  color: var(--mocha-pale);
  font-weight: 300;
}

textarea:focus {
  border-color: var(--mocha);
  box-shadow: 0 0 0 3px rgba(164, 119, 100, 0.12);
}

/* ── Token Counter Results ── */
.tc-results {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tc-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.5rem 0;
}

.tc-label {
  font-size: 0.85rem;
  color: var(--brown-soft);
}

.tc-value {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--mocha-deep);
  font-variant-numeric: tabular-nums;
}

.tc-note {
  margin-top: 1rem;
  font-size: 0.72rem;
  color: var(--mocha-light);
  font-style: italic;
  text-align: center;
}

/* ── Slider ── */
.slider-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.slider-wrap input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: linear-gradient(to right, var(--mocha), var(--mocha-light));
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.slider-wrap input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--mocha);
  box-shadow: 0 2px 6px var(--shadow-md);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.slider-wrap input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-wrap input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--mocha);
  box-shadow: 0 2px 6px var(--shadow-md);
  cursor: pointer;
}

.slider-value {
  min-width: 3rem;
  text-align: right;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--mocha-deep);
  font-variant-numeric: tabular-nums;
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--mocha-pale), transparent);
  margin: 2rem 0;
}

/* ── Results ── */
.results-header {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--brown-mid);
  margin-bottom: 1.25rem;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.6rem 0;
}

.result-row .label {
  font-size: 0.85rem;
  color: var(--brown-soft);
}

.result-row .label span {
  font-size: 0.75rem;
  color: var(--mocha-light);
  margin-left: 0.4rem;
}

.result-row .amount {
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--brown-dark);
}

.result-divider {
  height: 1px;
  background: var(--mocha-pale);
  margin: 0.5rem 0;
}

.result-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: 0.75rem;
}

.result-total .label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--brown-dark);
}

.result-total .amount {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--mocha-deep);
  font-variant-numeric: tabular-nums;
}

/* ── About ── */
.about {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border-radius: 0.75rem;
  border: 1px solid rgba(164, 119, 100, 0.08);
}

.about p {
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--brown-soft);
}

/* ── Footer ── */
footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.7rem;
  color: var(--mocha-light);
  letter-spacing: 0.02em;
}

footer span {
  margin: 0 0.4rem;
  opacity: 0.5;
}

/* ── Price hint ── */
.price-hint {
  font-size: 0.7rem;
  color: var(--mocha-light);
  margin-top: 0.3rem;
  font-style: italic;
}

/* ── Overflow warning ── */
.overflow-warning {
  display: none;
  margin-top: 0.75rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.78rem;
  color: #9a4e2e;
  background: #fdf0e8;
  border: 1px solid #e8c4aa;
  border-radius: 0.5rem;
}

/* ── FAQ ── */
.faq {
  margin-top: 2rem;
}

.faq-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--brown-dark);
  text-align: center;
  margin-bottom: 1.5rem;
}

.faq-item {
  border-bottom: 1px solid var(--mocha-pale);
}

.faq-question {
  display: flex;
  align-items: center;
  width: 100%;
  background: none;
  border: none;
  padding: 0.85rem 0;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  text-align: left;
  gap: 0.4rem;
}

.faq-number {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--brown-dark);
  min-width: 1.4em;
}

.faq-text {
  flex: 1;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--brown-dark);
}

.faq-icon {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--brown-dark);
  width: 1.2em;
  text-align: center;
}

.faq-answer {
  display: none;
  overflow: hidden;
  padding: 0 0 0 1.8em;
}

.faq-answer.open {
  display: block;
}

.faq-answer p {
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--brown-soft);
}

/* ── Responsive ── */
@media (max-width: 560px) {
  body {
    padding: 1.25rem 0.75rem;
  }

  .card {
    padding: 1.5rem;
    border-radius: 1rem;
  }

  header h1 {
    font-size: 1.35rem;
  }

  .result-total .amount {
    font-size: 1.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  body {
    opacity: 1;
    transition: none;
  }

  * {
    transition: none !important;
  }
}