/* Calculator hub + tool pages (RTL). Mobile-first scroll and tap targets. */

body.calc-page {
  overflow-x: clip;
}

.calc-page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.calc-header {
  background-color: var(--bg-color-dark);
  color: var(--white);
  padding: 12px 0;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.calc-header-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem 1rem;
}

.calc-brand {
  color: var(--white);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  justify-self: start;
}

.calc-brand:hover {
  color: var(--accent-color);
}

.calc-header-home {
  color: var(--accent-color);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9rem;
  white-space: nowrap;
}

.calc-header-home:hover {
  text-decoration: underline;
}

/* Horizontally scrollable tool nav on narrow screens */
.calc-nav-scroll {
  min-width: 0;
  width: 100%;
  max-width: 100%;
  justify-self: stretch;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  /* LTR scroll container avoids RTL overflow-x overlap / jumpiness with dir=rtl on html */
  direction: ltr;
  unicode-bidi: isolate;
}

.calc-nav-scroll::-webkit-scrollbar {
  display: none;
}

.calc-nav-scroll nav {
  display: block;
  width: max-content;
  max-width: none;
}

.calc-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.25rem 0.5rem;
  align-items: stretch;
  justify-content: flex-end;
  list-style: none;
  margin: 0;
  padding: 0;
  direction: rtl;
}

.calc-nav > li {
  flex-shrink: 0;
}

@media (max-width: 720px) {
  .calc-header-inner {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .calc-nav-scroll {
    width: 100%;
    max-width: none;
  }
}

.calc-nav a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-height: 44px;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  white-space: nowrap;
}

.calc-nav a:hover {
  color: var(--accent-color);
  background: rgba(255, 255, 255, 0.06);
}

.calc-nav a[aria-current="page"] {
  color: var(--accent-color);
  font-weight: 600;
  background: rgba(255, 179, 0, 0.12);
}

.calc-main {
  flex: 1;
  padding: 1.75rem 0 calc(2.5rem + env(safe-area-inset-bottom, 0px));
}

.calc-article {
  max-width: 640px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1.5rem 1.35rem 1.75rem;
  border: 1px solid var(--border-color);
}

.calc-article--hub {
  max-width: 920px;
}

@media (min-width: 720px) {
  .calc-article {
    padding: 2rem 2.25rem;
  }
}

.calc-eyebrow {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--secondary-color);
  margin: 0 0 0.35rem;
}

.calc-article h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  line-height: 1.25;
}

.calc-back-hub {
  margin: 0 0 1rem;
  font-size: 0.95rem;
}

.calc-back-hub a {
  color: var(--primary-dark);
  font-weight: 600;
  text-decoration: none;
}

.calc-back-hub a:hover {
  text-decoration: underline;
}

.calc-lead {
  margin: 0 0 1rem;
  color: var(--light-text-color);
  font-size: 1rem;
}

.calc-intro {
  margin: 0 0 1rem;
  color: var(--text-color);
  font-size: 1rem;
  line-height: 1.6;
}

.calc-section-heading {
  margin: 1.15rem 0 0.65rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.calc-formula {
  margin: 0 0 1.25rem;
  padding: 0.85rem 1rem;
  background: var(--bg-color-light);
  border-radius: 10px;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  direction: ltr;
  text-align: left;
  unicode-bidi: plaintext;
}

.calc-field {
  margin-bottom: 1rem;
}

.calc-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

.calc-field input,
.calc-field select {
  width: 100%;
  max-width: 280px;
  box-sizing: border-box;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 1rem;
}

@media (max-width: 480px) {
  .calc-field input,
  .calc-field select {
    max-width: 100%;
  }
}

.calc-field input:focus,
.calc-field select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.calc-result-box {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  background: linear-gradient(135deg, rgba(67, 160, 71, 0.08), rgba(46, 125, 50, 0.06));
  border-radius: 10px;
  border: 1px solid rgba(67, 160, 71, 0.25);
}

.calc-result-box + .calc-result-box {
  margin-top: 0.75rem;
}

.calc-result-box h2 {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--secondary-color);
  text-transform: none;
}

.calc-result-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-color);
  margin: 0;
}

.calc-result-subline {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0 0 0.5rem;
}

.calc-error {
  margin-top: 0.75rem;
  color: #c62828;
  font-size: 0.9rem;
  min-height: 1.35em;
}

.calc-disclaimer {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--light-text-color);
}

.calc-disclaimer strong {
  color: var(--text-color);
}

.calc-promo {
  margin-top: 1.75rem;
  padding: 1.15rem 1.2rem;
  background: var(--bg-color-dark);
  color: var(--white);
  border-radius: var(--radius-lg);
  text-align: center;
}

.calc-promo p {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  line-height: 1.55;
  opacity: 0.95;
}

.calc-promo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  align-items: center;
  justify-content: center;
}

.calc-promo .btn {
  margin: 0;
}

.calc-promo-home {
  color: var(--accent-color);
  font-weight: 600;
  text-decoration: none;
}

.calc-promo-home:hover {
  text-decoration: underline;
}

/* Hub: card grid */
.calc-hub-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.25rem;
}

@media (min-width: 560px) {
  .calc-hub-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 840px) {
  .calc-hub-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

a.calc-hub-card {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  min-width: 0;
  min-height: 0;
  height: 100%;
  padding: 1.1rem 1.15rem;
  background: var(--bg-color-light);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(30, 45, 58, 0.06);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

a.calc-hub-card:hover {
  border-color: rgba(67, 160, 71, 0.45);
  box-shadow: var(--shadow-soft);
}

a.calc-hub-card:focus {
  outline: none;
}

a.calc-hub-card:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

.calc-hub-card-title {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-color);
  overflow-wrap: anywhere;
}

.calc-hub-card-desc {
  margin: 0 0 1rem;
  flex: 1;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--light-text-color);
  overflow-wrap: anywhere;
}

.calc-hub-card-cta {
  align-self: flex-start;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--primary-dark);
}

a.calc-hub-card:hover .calc-hub-card-cta {
  text-decoration: underline;
}

.calc-warning {
  margin-top: 0.5rem;
  font-size: 0.88rem;
  color: #e65100;
}