/* ─── Variables ─────────────────────────────────── */
:root {
  --purple:  var(--color-purple, #5E17EB);
  --yellow:  var(--color-yellow, #FFDE59);
  --gray:    var(--color-gray, #D9D9D9);
  --dark:    var(--color-dark, #1A1A1A);
  --white:   var(--color-white, #FFFFFF);
}

/* ─── Page layout ───────────────────────────────── */
.ltr-page {
  background: var(--white);
  min-height: 100vh;
  font-family: 'Inter', sans-serif;
  color: var(--dark);
}

/* ─── Hero ───────────────────────────────────────── */
.ltr-hero {
  background-color: var(--purple);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  background-size: auto;
  padding: 80px 40px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.ltr-hero__kicker {
  font-family: 'League Spartan', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--yellow);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.ltr-hero__title {
  font-family: 'League Spartan', sans-serif;
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--white);
  text-transform: uppercase;
  line-height: 1.05;
  margin-bottom: 20px;
}

.ltr-hero__subtitle {
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  color: var(--gray);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ─── Dotted grid decoration ────────────────────── */
.ltr-hero::before,
.ltr-hero::after {
  content: '';
  position: absolute;
  width: 80px;
  height: 80px;
  background-image: radial-gradient(circle, var(--yellow) 2px, transparent 2px);
  background-size: 12px 12px;
  opacity: 0.6;
}
.ltr-hero::before { top: 20px; left: 30px; }
.ltr-hero::after  { bottom: 20px; right: 30px; }

/* ─── Tool container ─────────────────────────────── */
.ltr-tool {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

/* ─── Section titles ─────────────────────────────── */
.ltr-section-title {
  font-family: 'League Spartan', sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--purple);
  display: inline-block;
  padding: 6px 14px;
  margin-bottom: 20px;
}

/* ─── Field groups ───────────────────────────────── */
.ltr-group {
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--gray);
}

.ltr-group:last-of-type {
  border-bottom: none;
}

.ltr-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 16px;
}

@media (max-width: 600px) {
  .ltr-row { grid-template-columns: 1fr; }
}

/* ─── Labels & inputs ────────────────────────────── */
.ltr-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ltr-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--dark);
  letter-spacing: 0.04em;
}

.ltr-label span.unit {
  font-weight: 400;
  color: #666;
  margin-left: 4px;
}

.ltr-input,
.ltr-select {
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  color: var(--dark);
  background: var(--white);
  border: 2px solid var(--gray);
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 0;
}

.ltr-input:focus,
.ltr-select:focus {
  border-color: var(--purple);
}

.ltr-select-wrap {
  position: relative;
}

.ltr-select-wrap::after {
  content: '▼';
  font-size: 0.6rem;
  color: var(--purple);
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

/* ─── Toggle Yes/No ──────────────────────────────── */
.ltr-toggle {
  display: flex;
  gap: 0;
  border: 2px solid var(--gray);
}

.ltr-toggle input[type="radio"] { display: none; }

.ltr-toggle label {
  flex: 1;
  text-align: center;
  padding: 10px;
  font-family: 'League Spartan', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  color: #999;
}

.ltr-toggle input[type="radio"]:checked + label {
  background: var(--purple);
  color: var(--white);
}

/* ─── Geometry optional fields ───────────────────── */
.ltr-geometry-custom {
  display: none;
  margin-top: 16px;
}

.ltr-geometry-custom.visible { display: block; }

/* ─── CTA Button ─────────────────────────────────── */
.ltr-calculate-btn {
  font-family: 'League Spartan', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark);
  background: var(--yellow);
  border: none;
  padding: 18px 48px;
  cursor: pointer;
  width: 100%;
  margin-top: 16px;
  transition: background 0.15s;
}

.ltr-calculate-btn:hover { background: #f0ce40; }

/* ─── Result panel ───────────────────────────────── */
.ltr-result {
  display: none;
  margin-top: 48px;
  border: 3px solid var(--purple);
  padding: 36px;
}

.ltr-result.visible { display: block; }

.ltr-result__status {
  font-family: 'League Spartan', sans-serif;
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.ltr-result__status.ready    { color: #1a8a1a; }
.ltr-result__status.checks   { color: var(--purple); }
.ltr-result__status.prepare  { color: #cc2200; }

.ltr-result__label {
  font-family: 'League Spartan', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #666;
  margin-bottom: 28px;
}

.ltr-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.ltr-metric {
  background: #f5f5f5;
  padding: 16px;
}

.ltr-metric__value {
  font-family: 'League Spartan', sans-serif;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--purple);
  line-height: 1;
}

.ltr-metric__name {
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  color: #666;
  margin-top: 4px;
  line-height: 1.3;
}

/* ─── Energy bar ─────────────────────────────────── */
.ltr-bar-wrap {
  margin-bottom: 28px;
}

.ltr-bar-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  color: #666;
  margin-bottom: 6px;
}

.ltr-bar-track {
  width: 100%;
  height: 20px;
  background: var(--gray);
  position: relative;
}

.ltr-bar-fill {
  height: 100%;
  background: var(--purple);
  transition: width 0.6s ease;
  max-width: 100%;
}

.ltr-bar-markers {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  color: #888;
  margin-top: 4px;
}

/* ─── Improvement checkboxes ─────────────────────── */
.ltr-improvements {
  display: none;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 2px solid var(--yellow);
}

.ltr-improvements.visible { display: block; }

.ltr-improvements__title {
  font-family: 'League Spartan', sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.ltr-check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  cursor: pointer;
}

.ltr-check-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--purple);
  cursor: pointer;
  margin-top: 2px;
  flex-shrink: 0;
}

.ltr-check-item span {
  font-family: 'Inter', sans-serif;
  font-size: 0.88rem;
  line-height: 1.4;
}

.ltr-status-obtained {
  display: none;
  margin-top: 16px;
  background: var(--yellow);
  padding: 14px 20px;
  font-family: 'League Spartan', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark);
}

.ltr-status-obtained.visible { display: block; }

/* ─── LTR CTA (en index.html) ───────────────────── */
.ltr-cta {
  background: var(--dark, #1A1A1A);
  padding: 80px 40px;
}

.ltr-cta__inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.ltr-cta__text { flex: 1; min-width: 280px; }

.ltr-cta__kicker {
  font-family: 'League Spartan', sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--yellow, #FFDE59);
  margin-bottom: 12px;
}

.ltr-cta__title {
  font-family: 'League Spartan', sans-serif;
  font-weight: 900;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  color: var(--white, #FFFFFF);
  text-transform: uppercase;
  line-height: 1.05;
  margin-bottom: 16px;
}

.ltr-cta__body {
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  color: var(--gray, #D9D9D9);
  line-height: 1.65;
  margin-bottom: 28px;
  max-width: 480px;
}

.ltr-cta__btn {
  display: inline-block;
  font-family: 'League Spartan', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark, #1A1A1A);
  background: var(--yellow, #FFDE59);
  padding: 16px 36px;
  text-decoration: none;
  transition: background 0.15s;
}

.ltr-cta__btn:hover { background: #f0ce40; }

.ltr-cta__badge {
  flex-shrink: 0;
  opacity: 0.85;
}