/* ══════════════════════════════════════════════════════════════
   HisabUlHamal — Shared Calculator Design System (calculators.css)
   Unified, accessible, responsive styling for all public calculators:
   - Pregnancy & Due Date (/ and standalone)
   - Menstrual Period Calculator (/حاسبة-الدورة-الشهرية/)
   - Ovulation & Fertility Calculator (/حاسبة-أيام-التبويض/)
   - Chinese Gender Chart (/الجدول-الصيني-للحمل/)
══════════════════════════════════════════════════════════════ */

/* ─── 0. FLATPICKR CORE & ARABIC THEME ─── */
.flatpickr-calendar{background:transparent;opacity:0;display:none;text-align:center;visibility:hidden;padding:0;animation:none;direction:rtl;font-size:14px;line-height:24px;border-radius:16px;position:absolute;width:315px;box-sizing:border-box;touch-action:manipulation;background:#fff;border:1.5px solid var(--color-border, #DCE6E3);box-shadow:0 14px 40px rgba(23, 107, 104, 0.12), 0 2px 8px rgba(0,0,0,0.04);font-family:var(--font-family, 'Cairo', sans-serif);z-index:99999}
.flatpickr-calendar.open,.flatpickr-calendar.inline{opacity:1;max-height:640px;visibility:visible;display:inline-block}
.flatpickr-calendar.animate.open{animation:fpFadeInDown 260ms cubic-bezier(.16,1,.3,1)}
.flatpickr-calendar.static{position:absolute;top:calc(100% + 4px)}
.flatpickr-calendar.static.open{z-index:999;display:block}
.flatpickr-wrapper{position:relative;display:block;width:100%}
.flatpickr-months{display:flex;background:var(--color-primary-soft, #E8F5F3);border-radius:14px 14px 0 0;padding:6px 8px;align-items:center}
.flatpickr-months .flatpickr-month{color:var(--color-primary, #176B68);height:38px;line-height:1;text-align:center;position:relative;user-select:none;overflow:hidden;flex:1}
.flatpickr-months .flatpickr-prev-month,.flatpickr-months .flatpickr-next-month{user-select:none;text-decoration:none;cursor:pointer;position:absolute;top:6px;height:32px;width:32px;padding:6px;z-index:3;color:var(--color-primary, #176B68);fill:var(--color-primary, #176B68);border-radius:8px;display:flex;align-items:center;justify-content:center;transition:background 0.15s ease}
.flatpickr-months .flatpickr-prev-month:hover,.flatpickr-months .flatpickr-next-month:hover{background:rgba(23, 107, 104, 0.12)}
.flatpickr-months .flatpickr-prev-month{right:8px}
.flatpickr-months .flatpickr-next-month{left:8px}
.flatpickr-current-month{font-size:1rem;line-height:1;font-weight:700;color:var(--color-primary, #176B68);position:absolute;width:75%;left:12.5%;padding:6px 0 0;height:34px;display:inline-block;text-align:center}
.flatpickr-current-month .flatpickr-monthDropdown-months{appearance:menulist;background:transparent;border:none;border-radius:6px;box-sizing:border-box;color:var(--color-primary, #176B68);cursor:pointer;font-size:1rem;font-family:inherit;font-weight:700;height:auto;line-height:inherit;outline:none;padding:2px 6px;width:auto}
.flatpickr-current-month .flatpickr-monthDropdown-months:hover{background:rgba(23, 107, 104, 0.08)}
.flatpickr-current-month .numInputWrapper{width:7ch;display:inline-block}
.flatpickr-current-month input.cur-year{background:transparent;box-sizing:border-box;color:inherit;cursor:text;padding:0 4px;margin:0;display:inline-block;font-size:1rem;font-family:inherit;font-weight:700;line-height:inherit;height:auto;border:0;border-radius:6px;appearance:textfield}
.flatpickr-current-month input.cur-year:focus{background:rgba(23, 107, 104, 0.08);outline:none}
.flatpickr-weekdays{background:transparent;text-align:center;overflow:hidden;width:100%;display:flex;align-items:center;height:32px;padding:4px 0}
.flatpickr-weekdays .flatpickr-weekdaycontainer{display:flex;flex:1}
span.flatpickr-weekday{cursor:default;font-size:0.82rem;background:transparent;color:#6B7280;line-height:1;margin:0;text-align:center;display:block;flex:1;font-weight:700}
.dayContainer{padding:4px;outline:0;text-align:right;width:315px;min-width:315px;max-width:315px;box-sizing:border-box;display:flex;flex-wrap:wrap;justify-content:space-around}
.flatpickr-days{position:relative;overflow:hidden;display:flex;align-items:flex-start;width:315px}
.flatpickr-day{background:none;border:1.5px solid transparent;border-radius:10px;box-sizing:border-box;color:#1F2937;cursor:pointer;font-weight:600;width:14.2857143%;max-width:38px;height:38px;line-height:36px;margin:2px 0;display:inline-block;position:relative;text-align:center;font-size:0.92rem;transition:all 0.15s ease}
.flatpickr-day:hover{background:var(--color-primary-soft, #E8F5F3);color:var(--color-primary, #176B68)}
.flatpickr-day.today{border-color:var(--color-primary, #176B68);color:var(--color-primary, #176B68)}
.flatpickr-day.selected{background:var(--color-primary, #176B68) !important;border-color:var(--color-primary, #176B68) !important;color:#fff !important;box-shadow:0 3px 10px rgba(23, 107, 104, 0.28)}
.flatpickr-day.prevMonthDay,.flatpickr-day.nextMonthDay{color:#D1D5DB}
.flatpickr-day.flatpickr-disabled,.flatpickr-day.flatpickr-disabled:hover{color:#E5E7EB;cursor:not-allowed}
@keyframes fpFadeInDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* SVG Calendar Icon on Date Inputs */
.calc-input.flatpickr-custom-alt,
.hp-input.flatpickr-custom-alt,
.cc-input.flatpickr-custom-alt {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%23176B68' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='4' width='18' height='18' rx='2' ry='2'%3E%3C/rect%3E%3Cline x1='16' y1='2' x2='16' y2='6'%3E%3C/line%3E%3Cline x1='8' y1='2' x2='8' y2='6'%3E%3C/line%3E%3Cline x1='3' y1='10' x2='21' y2='10'%3E%3C/line%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 16px center;
  padding-left: 44px !important;
  cursor: pointer;
}

/* ─── 1. BASE TOOL PAGE FOUNDATIONS ─── */
.tool-view {
  width: 100%;
  overflow-x: hidden;
}

.calc-hero {
  padding: 32px 0 54px;
  background: linear-gradient(180deg, var(--color-primary-soft, #E8F5F3) 0%, #FFFFFF 100%);
  border-bottom: 1px solid var(--line-subtle, var(--color-surface-soft, #F3F8F7));
}

.calc-hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 40px;
  align-items: start;
}

@media (max-width: 991px) {
  .calc-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.calc-hero-editorial {
  padding-top: 8px;
}

.calc-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill, 9999px);
  background: var(--color-primary-soft, #E8F5F3);
  color: var(--color-primary, #176B68);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 16px;
  border: 1px solid rgba(23, 107, 104, 0.12);
}

.calc-h1 {
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  font-weight: 700;
  color: #21151D;
  line-height: 1.3;
  margin: 0 0 16px;
}

.calc-subheadline {
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--color-primary, #176B68);
  margin: 0 0 14px;
  line-height: 1.5;
}

.calc-lead {
  font-size: 1.05rem;
  color: #4B3E45;
  line-height: 1.8;
  margin: 0 0 20px;
}

.calc-trust-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.calc-trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill, 9999px);
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  color: #374151;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.calc-trust-chip-icon {
  color: var(--ok, #277755);
  font-weight: 800;
}

.calc-meta-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: #6B7280;
  margin-top: 14px;
}

.calc-meta-dot {
  color: #D1D5DB;
}

/* ─── 2. CALCULATOR CARD COMPONENT ─── */
.calc-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border, #DCE6E3);
  border-radius: var(--radius-lg, 20px);
  box-shadow: 0 8px 30px rgba(23, 107, 104, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
  padding: 30px;
  position: relative;
}

@media (max-width: 640px) {
  .calc-card {
    padding: 20px 16px;
    border-radius: var(--radius-md, 14px);
  }
}

.calc-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-subtle, var(--color-surface-soft, #F3F8F7));
}

.calc-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--color-primary-soft, #E8F5F3);
  color: var(--color-primary, #176B68);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  border: 1px solid rgba(23, 107, 104, 0.1);
}

.calc-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #21151D;
  margin: 0 0 4px;
}

.calc-card-desc {
  font-size: 0.88rem;
  color: #6B7280;
  margin: 0;
  line-height: 1.45;
}

/* Form Groups & Inputs */
.calc-form-group {
  margin-bottom: 18px;
}

.calc-label {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: #2D2529;
  margin-bottom: 8px;
}

.calc-input,
.calc-select {
  width: 100%;
  min-height: 52px;
  height: 52px;
  padding: 0 16px;
  font-size: 1rem;
  font-family: inherit;
  color: #1F2937;
  background: #FAFAFA;
  border: 1.5px solid var(--color-border, #DCE6E3);
  border-radius: 12px;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.calc-input:focus,
.calc-select:focus {
  outline: none;
  background: #FFFFFF;
  border-color: var(--color-primary, #176B68);
  box-shadow: 0 0 0 3px rgba(23, 107, 104, 0.15);
}

.calc-input.calc-input-error,
.calc-select.calc-input-error {
  border-color: #DC2626 !important;
  background: #FEF2F2 !important;
}

.calc-field-hint {
  display: block;
  font-size: 0.82rem;
  color: #6B7280;
  margin-top: 6px;
  line-height: 1.4;
}

.calc-error-message {
  display: none;
  font-size: 0.82rem;
  color: #DC2626;
  font-weight: 600;
  margin-top: 6px;
  align-items: center;
  gap: 4px;
}

.calc-error-message.show {
  display: flex;
}

/* ─── INTERACTIVE STEPPER COMPONENT ─── */
.calc-stepper-group {
  margin-bottom: 20px;
}

.calc-stepper {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--color-border, #DCE6E3);
  border-radius: 12px;
  overflow: hidden;
  background: #FFFFFF;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  height: 52px;
}

.calc-stepper:focus-within {
  border-color: var(--color-primary, #176B68);
  box-shadow: 0 0 0 3px rgba(23, 107, 104, 0.15);
}

.calc-stepper-btn {
  width: 52px;
  min-width: 52px;
  background: #F8FAF9;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary, #176B68);
  transition: background 0.15s ease, color 0.15s ease;
  padding: 0;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.calc-stepper-btn:hover {
  background: var(--color-primary-soft, #E8F5F3);
  color: var(--brand-hover, var(--color-primary-hover, #145B59));
}

.calc-stepper-btn:active {
  background: rgba(23, 107, 104, 0.2);
}

.calc-stepper-input-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calc-stepper-input {
  width: 100% !important;
  height: 100% !important;
  min-height: 100% !important;
  border: none !important;
  background: transparent !important;
  box-shadow: none !important;
  text-align: center;
  font-size: 1.25rem !important;
  font-weight: 700 !important;
  color: #1F2937 !important;
  padding: 0 45px 0 20px !important;
  appearance: textfield;
  -moz-appearance: textfield;
}

.calc-stepper-input::-webkit-outer-spin-button,
.calc-stepper-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.calc-stepper-unit {
  position: absolute;
  left: 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #6B7280;
  pointer-events: none;
}

/* Button & Action Row */
.calc-actions-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  align-items: center;
}

.calc-submit-btn {
  flex: 1;
  min-height: 52px;
  padding: 12px 24px;
  font-size: 1.02rem;
  font-weight: 700;
  font-family: inherit;
  color: #FFFFFF;
  background: var(--color-primary, #176B68);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(23, 107, 104, 0.25);
}

.calc-submit-btn:hover {
  background: var(--brand-hover, var(--color-primary-hover, #145B59));
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(23, 107, 104, 0.32);
}

.calc-submit-btn:active {
  transform: translateY(0);
}

.calc-reset-btn {
  min-height: 52px;
  padding: 12px 18px;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: inherit;
  color: #4B5563;
  background: #F3F4F6;
  border: 1px solid #E5E7EB;
  border-radius: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.calc-reset-btn:hover {
  background: #E5E7EB;
  color: #1F2937;
}

.calc-privacy-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: #6B7280;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-subtle, var(--color-surface-soft, #F3F8F7));
}

/* ─── 3. RESULTS DASHBOARD STYLING ─── */
.calc-result-area {
  margin-top: 32px;
  display: none;
  animation: calcFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.calc-result-area.show {
  display: block;
}

/* FULL-WIDTH RESULT BREAKOUT REGION */
.calc-result-region {
  grid-column: 1 / -1 !important;
  width: 100% !important;
  max-width: 100% !important;
  margin-top: 36px;
  box-sizing: border-box;
}

@keyframes calcFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.calc-dashboard {
  background: #FFFFFF;
  border: 1.5px solid var(--color-border, #DCE6E3);
  border-radius: 20px;
  padding: 32px 36px;
  box-shadow: 0 12px 36px rgba(23, 107, 104, 0.08), 0 2px 6px rgba(0, 0, 0, 0.03);
  position: relative;
}

@media (max-width: 768px) {
  .calc-dashboard {
    padding: 20px 16px;
    border-radius: 16px;
  }
}

.calc-dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-subtle, var(--color-surface-soft, #F3F8F7));
  flex-wrap: wrap;
  gap: 12px;
}

.calc-dashboard-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary, #176B68);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.calc-dashboard-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill, 9999px);
  background: var(--color-primary-soft, #E8F5F3);
  color: var(--color-primary, #176B68);
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid rgba(23, 107, 104, 0.12);
}

/* ─── V3 PRIMARY METRIC HIGHLIGHT BANNER ─── */
.calc-primary-highlight {
  background: linear-gradient(135deg, var(--color-primary-soft, #E8F5F3) 0%, #FFFFFF 100%);
  border: 2px solid var(--color-border, #DCE6E3);
  border-radius: 16px;
  padding: 28px 24px;
  margin-bottom: 24px;
  text-align: center;
  position: relative;
  box-shadow: 0 4px 16px rgba(23, 107, 104, 0.05);
}

.calc-primary-label {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: #4B5563;
  margin-bottom: 6px;
}

.calc-primary-val {
  display: block;
  font-size: clamp(2rem, 3.8vw, 2.75rem);
  font-weight: 800;
  color: var(--color-primary, #176B68);
  line-height: 1.2;
  margin-bottom: 6px;
}

.calc-primary-sub {
  display: block;
  font-size: 1.05rem;
  color: #374151;
  font-weight: 600;
  margin-bottom: 10px;
}

.calc-countdown-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  border-radius: 9999px;
  background: #FFFFFF;
  border: 1px solid var(--color-border, #DCE6E3);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-primary, #176B68);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

/* ─── V3 4-COLUMN HORIZONTAL METRIC GRID ─── */
.calc-metrics-grid-v3,
.calc-metrics-grid,
.result-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

@media (max-width: 991px) {
  .calc-metrics-grid-v3,
  .calc-metrics-grid,
  .result-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .calc-metrics-grid-v3,
  .calc-metrics-grid,
  .result-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

.calc-metric-card-v3,
.calc-metric-card,
.metric {
  background: #FFFFFF;
  border: 1.5px solid #E5E7EB;
  border-radius: 14px;
  padding: 18px 20px;
  transition: all 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-metric-card-v3:hover,
.calc-metric-card:hover,
.metric:hover {
  border-color: var(--color-primary, #176B68);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(23, 107, 104, 0.08);
}

.calc-metric-card-label {
  display: block;
  font-size: 0.84rem;
  color: #6B7280;
  margin-bottom: 6px;
  font-weight: 600;
}

.calc-metric-card-val {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  color: #111827;
  line-height: 1.3;
  margin-bottom: 4px;
}

.calc-metric-card-sub {
  display: block;
  font-size: 0.82rem;
  color: #4B5563;
  font-weight: 500;
}

/* ─── V3 FULL-WIDTH TRIMESTER PROGRESS BAR ─── */
.calc-progress-section {
  background: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 24px;
}

.calc-progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  color: #1F2937;
}

.calc-progress-track {
  width: 100%;
  height: 16px;
  background: #E5E7EB;
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
  margin-bottom: 18px;
}

.calc-progress-bar {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(90deg, var(--color-primary-soft, #B5E2DF) 0%, var(--color-primary, #176B68) 100%);
  transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.calc-trimesters-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

@media (max-width: 640px) {
  .calc-trimesters-row {
    grid-template-columns: 1fr;
  }
}

.calc-tri-badge {
  padding: 12px 14px;
  border-radius: 12px;
  background: #FFFFFF;
  border: 1.5px solid #E5E7EB;
  color: #6B7280;
  font-size: 0.88rem;
  font-weight: 600;
  text-align: center;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.calc-tri-badge.active {
  border-color: var(--color-primary, #176B68);
  background: var(--color-primary-soft, #E8F5F3);
  color: var(--color-primary, #176B68);
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(23, 107, 104, 0.12);
}

.calc-tri-title {
  font-size: 0.92rem;
  font-weight: 700;
}

.calc-tri-weeks {
  font-size: 0.8rem;
  opacity: 0.85;
}

/* ─── V3 CONTEXTUAL WEEK GUIDE CARD WITH THUMBNAIL ─── */
.calc-week-guide-v3 {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 22px 26px;
  border-radius: 16px;
  background: linear-gradient(135deg, #FAFDFD 0%, #FFFFFF 100%);
  border: 1.5px solid var(--color-border, #DCE6E3);
  margin-bottom: 24px;
  box-shadow: 0 4px 18px rgba(23, 107, 104, 0.06);
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
}

.calc-week-guide-v3:hover {
  border-color: var(--color-primary, #176B68);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(23, 107, 104, 0.12);
}

.calc-week-guide-thumb {
  width: 110px;
  height: 110px;
  min-width: 110px;
  border-radius: 12px;
  object-fit: cover;
  border: 1px solid rgba(23, 107, 104, 0.15);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  background: #F3F4F6;
}

.calc-week-guide-body {
  flex: 1;
}

.calc-week-guide-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary, #176B68);
  margin-bottom: 4px;
}

.calc-week-guide-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #1F2937;
  margin: 0 0 6px;
  line-height: 1.35;
}

.calc-week-guide-snippet {
  font-size: 0.92rem;
  color: #4B5563;
  margin: 0 0 12px;
  line-height: 1.5;
}

.calc-week-guide-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 8px;
  background: var(--color-primary, #176B68);
  color: #FFFFFF;
  font-size: 0.88rem;
  font-weight: 700;
  transition: background 0.15s ease;
}

.calc-week-guide-v3:hover .calc-week-guide-btn {
  background: var(--brand-hover, var(--color-primary-hover, #145B59));
}

@media (max-width: 640px) {
  .calc-week-guide-v3 {
    flex-direction: column;
    text-align: center;
    padding: 20px 16px;
  }
  .calc-week-guide-thumb {
    width: 90px;
    height: 90px;
    min-width: 90px;
  }
  .calc-week-guide-btn {
    width: 100%;
    justify-content: center;
  }
}

/* Fallback simple CTA link */
.calc-guide-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, #FFF0F5 0%, #FDF4F8 100%);
  border: 1.5px solid var(--color-border, #DCE6E3);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 24px;
  text-decoration: none;
  color: var(--color-primary, #176B68);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.calc-guide-cta:hover {
  background: #FFE4EE;
  transform: translateX(-3px);
  color: var(--brand-hover, var(--color-primary-hover, #145B59));
}

.calc-guide-cta-icon {
  font-size: 1.25rem;
}

/* ─── V3 MENSTRUAL 3-COLUMN UPCOMING CYCLES ─── */
.calc-future-cycles {
  margin: 24px 0;
  background: #FAFBFB;
  border: 1px solid #E5E7EB;
  border-radius: 16px;
  padding: 22px 24px;
}

.calc-future-cycles-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1F2937;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.calc-future-cycles-grid,
.calc-future-cycles-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  list-style: none;
  padding: 0;
  margin: 0;
}

@media (max-width: 768px) {
  .calc-future-cycles-grid,
  .calc-future-cycles-list {
    grid-template-columns: 1fr;
  }
}

.calc-cycle-card-v3,
.calc-future-cycle-item {
  background: #FFFFFF;
  border: 1.5px solid var(--color-border, #DCE6E3);
  border-radius: 12px;
  padding: 16px 18px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
  transition: all 0.2s ease;
}

.calc-cycle-card-v3:hover,
.calc-future-cycle-item:hover {
  border-color: var(--color-primary, #176B68);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(23, 107, 104, 0.08);
}

.calc-cycle-badge-num,
.calc-future-cycle-num {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary, #176B68);
  background: var(--color-primary-soft, #E8F5F3);
  padding: 3px 12px;
  border-radius: 9999px;
  margin-bottom: 8px;
}

.calc-cycle-date-v3,
.calc-future-cycle-date {
  display: block;
  font-size: 1.15rem;
  font-weight: 800;
  color: #111827;
  margin-bottom: 4px;
}

.calc-cycle-hijri-v3 {
  display: block;
  font-size: 0.82rem;
  color: #6B7280;
  font-weight: 500;
}

/* ─── V3 CYCLE PHASES TIMELINE ─── */
.calc-cycle-timeline {
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 24px;
}

.calc-cycle-timeline-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #374151;
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-phase-bars {
  display: flex;
  height: 24px;
  border-radius: 8px;
  overflow: hidden;
  gap: 2px;
  background: #F3F4F6;
  margin-bottom: 14px;
}

.calc-phase-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #FFFFFF;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  padding: 0 4px;
}

.calc-phase-bar.phase-menstrual { background: #E11D48; }
.calc-phase-bar.phase-follicular { background: #94A3B8; }
.calc-phase-bar.phase-fertile { background: #10B981; }
.calc-phase-bar.phase-luteal { background: var(--color-secondary, #445D7A); }

.calc-phase-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: #4B5563;
}

.calc-legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  vertical-align: middle;
  margin-inline-end: 4px;
}

.calc-legend-dot.dot-menstrual { background: #E11D48; }
.calc-legend-dot.dot-follicular { background: #94A3B8; }
.calc-legend-dot.dot-fertile { background: #10B981; }
.calc-legend-dot.dot-luteal { background: var(--color-secondary, #445D7A); }

/* ─── V3 OVULATION 6-DAY FERTILE WINDOW STRIP ─── */
.calc-fertility-strip {
  background: #FAFBFB;
  border: 1px solid #E5E7EB;
  border-radius: 16px;
  padding: 22px 24px;
  margin: 24px 0;
}

.calc-fertility-strip-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1F2937;
  margin-bottom: 16px;
}

.calc-fertility-grid-v3,
.calc-fertility-days {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

@media (max-width: 900px) {
  .calc-fertility-grid-v3,
  .calc-fertility-days {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 500px) {
  .calc-fertility-grid-v3,
  .calc-fertility-days {
    grid-template-columns: repeat(2, 1fr);
  }
}

.calc-fertility-day-card {
  background: #FFFFFF;
  border: 1.5px solid #E5E7EB;
  border-radius: 12px;
  padding: 14px 10px;
  text-align: center;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.calc-fertility-day-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary, #176B68);
}

.calc-fertility-day-card.peak {
  background: linear-gradient(135deg, #FFF1F2 0%, #FFFFFF 100%);
  border: 2px solid #E11D48;
  box-shadow: 0 4px 16px rgba(225, 29, 72, 0.15);
}

.calc-fertility-day-date {
  font-size: 1.15rem;
  font-weight: 800;
  color: #1F2937;
}

.calc-fertility-day-card.peak .calc-fertility-day-date {
  color: #BE123C;
}

.calc-fertility-day-level {
  font-size: 0.78rem;
  font-weight: 700;
  color: #6B7280;
}

.calc-fertility-day-card.peak .calc-fertility-day-level {
  color: #E11D48;
  background: #FFE4E6;
  padding: 2px 8px;
  border-radius: 9999px;
}

/* ─── V3 CHINESE CHART RESULT SECTION ─── */
.cc-result-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 10px;
  align-items: start;
}

@media (max-width: 860px) {
  .cc-result-split {
    grid-template-columns: 1fr;
  }
}

.cc-result-card {
  background: #FFFFFF;
  border: 1.5px solid var(--color-border, #DCE6E3);
  border-radius: 16px;
  padding: 24px;
}

.cc-prediction-banner {
  text-align: center;
  padding: 24px;
  border-radius: 14px;
  margin-bottom: 20px;
}

.cc-prediction-banner.boy {
  background: #EFF6FF;
  border: 2px solid #93C5FD;
}

.cc-prediction-banner.girl {
  background: #FDF2F8;
  border: 2px solid #F9A8D4;
}

.cc-pred-val {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.2;
  margin: 6px 0;
}

.cc-pred-val.boy { color: #1D4ED8; }
.cc-pred-val.girl { color: #BE185D; }

/* ─── DIRTY STATE BANNER ─── */
.calc-dirty-banner {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 12px;
  background: #FEF3C7;
  border: 1.5px solid #FCD34D;
  color: #92400E;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 20px;
  animation: calcFadeIn 0.3s ease;
}

.calc-dirty-banner.show {
  display: flex;
}

/* ─── FLOATING TOAST FEEDBACK ─── */
.calc-toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #111827;
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: 9999px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
  z-index: 999999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  direction: rtl;
}

.calc-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.calc-toast-icon {
  width: 20px;
  height: 20px;
  color: #10B981;
}

/* Disclaimers & Notices */
.calc-notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-inline-start: 4px solid #D97706;
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 24px;
  color: #92400E;
  font-size: 0.88rem;
  line-height: 1.6;
}

.calc-notice-icon {
  font-size: 1.15rem;
  flex-shrink: 0;
  line-height: 1;
}

/* Dashboard Action Bar (Print, Copy, Reset) */
.calc-dashboard-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  padding-top: 18px;
  border-top: 1px solid var(--line-subtle, var(--color-surface-soft, #F3F8F7));
}

.calc-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  border: 1.5px solid #E5E7EB;
  background: #FFFFFF;
  color: #374151;
  transition: all 0.15s ease;
}

.calc-action-btn:hover {
  background: #F9FAFB;
  border-color: var(--color-primary, #176B68);
  color: var(--color-primary, #176B68);
}

.calc-action-btn.calc-action-copy.copied {
  background: #ECFDF5;
  border-color: #10B981;
  color: #065F46;
}

/* ─── 4. EDITORIAL SECTIONS STYLING (ON TOOL PAGES) ─── */
.calc-editorial-section {
  padding: 50px 0;
  border-bottom: 1px solid var(--line-subtle, var(--color-surface-soft, #F3F8F7));
}

.calc-editorial-section:nth-of-type(even) {
  background: #FAFAFA;
}

.calc-section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.calc-section-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary, #176B68);
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.calc-section-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  color: #21151D;
  margin: 0 0 12px;
  line-height: 1.35;
}

.calc-section-desc {
  font-size: 0.98rem;
  color: #6B7280;
  line-height: 1.7;
  margin: 0;
}

/* Grid Cards (Steps / Features / Signs) */
.calc-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .calc-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.calc-feature-card {
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-md, 14px);
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.calc-feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  border-color: var(--color-border, #DCE6E3);
}

.calc-card-badge-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary-soft, #E8F5F3);
  color: var(--color-primary, #176B68);
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.calc-card-heading {
  font-size: 1.12rem;
  font-weight: 700;
  color: #1F2937;
  margin: 0 0 10px;
}

.calc-card-paragraph {
  font-size: 0.92rem;
  color: #4B5563;
  line-height: 1.7;
  margin: 0;
}

/* Prose Text Blocks */
.calc-prose-container {
  max-width: 820px;
  margin: 0 auto;
}

.calc-prose-block {
  margin-bottom: 32px;
}

.calc-prose-block h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: #21151D;
  margin: 0 0 14px;
}

.calc-prose-block p {
  font-size: 1rem;
  color: #374151;
  line-height: 1.8;
  margin: 0 0 14px;
}

.calc-prose-block ul,
.calc-prose-block ol {
  padding-inline-start: 24px;
  margin: 0 0 16px;
}

.calc-prose-block li {
  font-size: 0.95rem;
  color: #374151;
  line-height: 1.75;
  margin-bottom: 8px;
}

/* FAQ Accordion */
.calc-faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.calc-faq-item {
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-md, 14px);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.calc-faq-item[open] {
  border-color: var(--color-border, #DCE6E3);
  box-shadow: 0 4px 14px rgba(23, 107, 104, 0.05);
}

.calc-faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #1F2937;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.calc-faq-question::-webkit-details-marker {
  display: none;
}

.calc-faq-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary, #176B68);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.calc-faq-item[open] .calc-faq-icon {
  transform: rotate(180deg);
}

.calc-faq-answer {
  padding: 0 22px 20px;
  font-size: 0.95rem;
  color: #4B5563;
  line-height: 1.75;
}

.calc-faq-answer p {
  margin: 0;
}

/* Related Tools Grid */
.calc-related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

@media (max-width: 991px) {
  .calc-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .calc-related-grid {
    grid-template-columns: 1fr;
  }
}

.calc-related-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-md, 14px);
  padding: 22px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.calc-related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
  border-color: var(--color-border, #DCE6E3);
}

.calc-rel-icon {
  font-size: 1.75rem;
  margin-bottom: 12px;
  display: block;
}

.calc-rel-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1F2937;
  margin: 0 0 8px;
}

.calc-rel-desc {
  font-size: 0.85rem;
  color: #6B7280;
  line-height: 1.55;
  margin: 0 0 16px;
}

.calc-rel-cta {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary, #176B68);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* References Box */
.calc-ref-box {
  background: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-md, 14px);
  padding: 24px 28px;
  max-width: 820px;
  margin: 0 auto;
}

.calc-ref-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #1F2937;
  margin: 0 0 8px;
}

.calc-ref-desc {
  font-size: 0.88rem;
  color: #6B7280;
  margin: 0 0 16px;
}

.calc-ref-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.calc-ref-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  color: #374151;
  font-size: 0.88rem;
  text-decoration: none;
  transition: all 0.15s ease;
}

.calc-ref-link:hover {
  border-color: var(--color-border, #DCE6E3);
  color: var(--color-primary, #176B68);
}

.calc-ref-source {
  font-weight: 700;
  color: var(--color-primary, #176B68);
  font-size: 0.8rem;
  display: block;
}

/* Final CTA Card */
.calc-final-cta-card {
  background: linear-gradient(135deg, #FFF0F5 0%, #FFFFFF 100%);
  border: 1.5px solid var(--color-border, #DCE6E3);
  border-radius: var(--radius-lg, 20px);
  padding: 36px 30px;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  box-shadow: 0 8px 30px rgba(23, 107, 104, 0.06);
}

.calc-final-cta-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #21151D;
  margin: 0 0 12px;
}

.calc-final-cta-p {
  font-size: 1rem;
  color: #4B3E45;
  line-height: 1.75;
  max-width: 620px;
  margin: 0 auto 24px;
}

.calc-final-cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.calc-fcta-btn-primary {
  padding: 12px 26px;
  font-size: 0.98rem;
  font-weight: 700;
  border-radius: var(--radius-pill, 9999px);
  background: var(--color-primary, #176B68);
  color: #FFFFFF;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.calc-fcta-btn-primary:hover {
  background: var(--brand-hover, var(--color-primary-hover, #145B59));
  transform: translateY(-1px);
}

.calc-fcta-btn-secondary {
  padding: 12px 24px;
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: var(--radius-pill, 9999px);
  background: #FFFFFF;
  color: #374151;
  border: 1px solid #D1D5DB;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: all 0.2s ease;
}

.calc-fcta-btn-secondary:hover {
  background: #F9FAFB;
  border-color: #9CA3AF;
}

/* ─── 5. PRINT MEDIA STYLESHEET ─── */
@media print {
  body {
    background: #FFFFFF !important;
    color: #000000 !important;
    font-size: 11pt;
    line-height: 1.5;
  }

  header,
  footer,
  nav,
  .site-header,
  .site-footer,
  .calc-trust-row,
  .calc-actions-row,
  .calc-dashboard-actions,
  .calc-guide-cta,
  .calc-week-guide-btn,
  .calc-editorial-section,
  .calc-final-cta-card,
  .breadcrumb-nav,
  .hp-hero__editorial,
  .calc-hero-editorial,
  .cc-hero-editorial,
  .hp-calc-card,
  .calc-card,
  .cc-calc-card,
  .calc-toast,
  .calc-dirty-banner,
  .calc-privacy-note,
  .hp-calc-privacy,
  .cc-calc-privacy,
  .cc-how-it-works,
  .cc-lunar-section,
  .cc-matrix-section {
    display: none !important;
  }

  .calc-hero,
  .hp-hero,
  .cc-hero {
    padding: 0 !important;
    background: none !important;
    border: none !important;
  }

  .calc-hero-grid,
  .hp-hero__grid,
  .cc-hero-grid {
    display: block !important;
  }

  .calc-result-region,
  .calc-result-area {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }

  .calc-dashboard {
    border: 1.5px solid #000000 !important;
    box-shadow: none !important;
    padding: 20px !important;
    border-radius: 8px !important;
  }

  .calc-dashboard-header {
    border-bottom: 2px solid #000000 !important;
    padding-bottom: 10px !important;
  }

  .calc-primary-highlight {
    border: 1.5px solid #000000 !important;
    background: none !important;
    padding: 16px !important;
    border-radius: 8px !important;
  }

  .calc-primary-val {
    color: #000000 !important;
    font-size: 24pt !important;
  }

  .calc-metrics-grid,
  .calc-metrics-grid-v3,
  .result-grid {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 10px !important;
  }

  .calc-metric-card,
  .calc-metric-card-v3,
  .metric {
    border: 1px solid #444444 !important;
    box-shadow: none !important;
    padding: 10px !important;
  }

  .calc-progress-section,
  .calc-future-cycles,
  .calc-fertility-strip {
    border: 1px solid #444444 !important;
    background: none !important;
  }

  .calc-progress-bar {
    background: #000000 !important;
  }

  .calc-week-guide-v3 {
    border: 1px solid #444444 !important;
    background: none !important;
    box-shadow: none !important;
  }
}