/* ============================================================
   CALCULATORSLY — calc-page.css
   Individual calculator page layout, inputs, results display
   ============================================================ */

/* ── Page Hero ───────────────────────────────────────────── */
.calc-hero {
  background: var(--bg-dark);
  padding: 40px 24px 36px;
  border-bottom: 3px solid var(--theme-color);
}

.calc-hero .inner {
  max-width: 1160px;
  margin: 0 auto;
}

.calc-hero .breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.calc-hero .breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.15s;
}

.calc-hero .breadcrumb a:hover { color: var(--ink-inv); }

.calc-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  letter-spacing: 0.03em;
  color: var(--ink-inv);
  line-height: 1;
  margin-bottom: 12px;
}

.calc-hero h1 span {
  color: var(--theme-color);
}

.calc-hero .hero-desc {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--ink-soft);
  max-width: 560px;
  line-height: 1.6;
}

/* ── Main Layout ─────────────────────────────────────────── */
.calc-main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 40px 24px 60px;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 40px;
  align-items: start;
}

/* ── Left Panel (sticky) ─────────────────────────────────── */
.calc-panel {
  position: sticky;
  top: 80px;
}

.calc-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: 3px solid var(--theme-color);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.calc-widget h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin-bottom: 6px;
}

.calc-widget .widget-desc {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin-bottom: 24px;
  line-height: 1.5;
}

/* ── Form Fields ─────────────────────────────────────────── */
.field-group {
  margin-bottom: 18px;
}

.field-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mid);
  margin-bottom: 6px;
}

.field-group .field-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.field-group .field-prefix,
.field-group .field-suffix {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
  pointer-events: none;
  user-select: none;
}

.field-group .field-prefix { left: 12px; }
.field-group .field-suffix { right: 12px; }

.field-group input,
.field-group select {
  width: 100%;
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--ink);
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

.field-group input:focus,
.field-group select:focus {
  border-color: var(--theme-color);
  box-shadow: 0 0 0 3px var(--theme-light);
}

.field-group.has-prefix input { padding-left: 28px; }
.field-group.has-suffix input { padding-right: 36px; }

/* radio group */
.radio-group {
  display: flex;
  gap: 8px;
}

.radio-group label {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 10px;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-mid);
  cursor: pointer;
  transition: all 0.15s;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  margin-bottom: 0;
}

.radio-group input[type="radio"] {
  width: auto;
  accent-color: var(--theme-color);
}

.radio-group label:has(input:checked) {
  border-color: var(--theme-color);
  background: var(--theme-light);
  color: var(--ink);
}

/* segmented tabs */
.seg-group {
  display: flex;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.seg-group button {
  flex: 1;
  padding: 9px 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  background: transparent;
  border: none;
  color: var(--ink-mid);
  cursor: pointer;
  transition: all 0.15s;
  border-right: 1px solid var(--border);
}

.seg-group button:last-child { border-right: none; }

.seg-group button.active {
  background: var(--theme-color);
  color: #fff;
}

/* ── Calculate Button ────────────────────────────────────── */
.btn-calc {
  width: 100%;
  padding: 14px 20px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--theme-color);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.15s, transform 0.1s;
  position: relative;
  overflow: hidden;
}

.btn-calc:hover { filter: brightness(1.08); }
.btn-calc:active { transform: scale(0.99); }

.btn-calc.loading {
  color: transparent;
  pointer-events: none;
}

.btn-calc.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='10' fill='none' stroke='white' stroke-width='2' stroke-dasharray='32' stroke-dashoffset='32'%3E%3CanimateTransform attributeName='transform' type='rotate' from='0 12 12' to='360 12 12' dur='0.8s' repeatCount='indefinite'/%3E%3C/circle%3E%3C/svg%3E") center no-repeat;
}

/* ── Results Area ────────────────────────────────────────── */
.calc-results {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.results-header {
  background: var(--bg-dark);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.results-header h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 500;
}

.results-header .result-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
}

.results-body {
  padding: 28px 24px;
}

/* empty state */
.results-empty {
  text-align: center;
  padding: 48px 24px;
}

.results-empty .empty-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
  opacity: 0.3;
}

.results-empty p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* primary result */
.result-primary {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}

.result-primary .result-value {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 4.2rem);
  letter-spacing: 0.02em;
  color: var(--theme-color);
  line-height: 1;
}

.result-primary .result-unit {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ink-mid);
  font-weight: 500;
}

.result-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 28px;
}

/* secondary results grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.result-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--theme-color);
  border-radius: var(--radius);
  padding: 14px 16px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.result-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.result-card .card-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 4px;
}

.result-card .card-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* results table */
.results-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  margin-top: 16px;
}

.results-table th {
  text-align: left;
  padding: 8px 12px;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--border);
  font-weight: 500;
}

.results-table td {
  padding: 10px 12px;
  color: var(--ink-mid);
  border-bottom: 1px solid var(--border);
}

.results-table td:first-child { color: var(--ink); }
.results-table td.highlight { color: var(--theme-color); font-weight: 600; }
.results-table tr:last-child td { border-bottom: none; }
.results-table tr:hover td { background: var(--bg); }

/* ── Editorial Area ──────────────────────────────────────── */
.calc-editorial {
  margin-top: 40px;
}

.calc-editorial h2 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: 0.03em;
  margin-bottom: 12px;
  color: var(--ink);
}

.calc-editorial h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  margin: 24px 0 8px;
  color: var(--ink);
}

.calc-editorial p {
  font-size: 0.9rem;
  color: var(--ink-mid);
  line-height: 1.8;
  margin-bottom: 14px;
}

.calc-editorial ul {
  padding-left: 20px;
  margin-bottom: 14px;
}

.calc-editorial ul li {
  font-size: 0.88rem;
  color: var(--ink-mid);
  line-height: 1.7;
  margin-bottom: 4px;
}

/* ── FAQ Accordion ───────────────────────────────────────── */
.faq-section {
  margin-top: 40px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.faq-section h2 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: 0.03em;
  margin-bottom: 20px;
  color: var(--ink);
}

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 0;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-question .faq-icon {
  font-size: 1rem;
  color: var(--theme-color);
  flex-shrink: 0;
  transition: transform 0.2s;
  font-family: var(--font-mono);
}

.faq-item.open .faq-icon { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 0 18px;
  font-size: 0.88rem;
  color: var(--ink-mid);
  line-height: 1.8;
}

/* ── Also Try ────────────────────────────────────────────── */
.also-try {
  margin-top: 40px;
  padding: 28px;
  background: var(--bg-dark);
  border-radius: var(--radius);
}

.also-try h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.also-try-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.also-try-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #8A8E9A;
  text-decoration: none;
  transition: all 0.15s;
}

.also-try-link:hover {
  background: rgba(255,255,255,0.08);
  color: var(--ink-inv);
  text-decoration: none;
}

/* ── Right Column ────────────────────────────────────────── */
.calc-right {
  min-width: 0;
}

.ad-wrapper-leader {
  margin: 24px 0;
  display: flex;
  justify-content: center;
}

/* ── Fade-in animation ───────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  animation: fadeUp 0.4s ease forwards;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .calc-main {
    grid-template-columns: 1fr;
    padding: 24px 16px 48px;
  }

  .calc-panel {
    position: static;
  }

  .calc-hero {
    padding: 28px 16px 24px;
  }
}