/* ==========================================================================
   Age Calculator — Premium Upscaled & Fully Responsive Stylesheet
   Theme: Royal Blue (#1a3566), Amber Gold (#d97706), Slate, Glassmorphism
   Supported Breakpoints: 320px, 375px, 430px, 768px, 1024px, 1280px+
   ========================================================================== */

/* --- Tool Header & Badges --- */
.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(26, 53, 102, 0.12);
  box-shadow: 0 4px 16px rgba(26, 53, 102, 0.05);
  font-size: 13px;
  font-weight: 600;
  color: var(--royal-dark, #122549);
  margin-bottom: 18px;
  max-width: 100%;
  text-align: center;
}

.tool-badge i {
  font-size: 15px;
  color: #059669;
  flex-shrink: 0;
}

/* --- Main Calculator Card --- */
.calculator-card {
  padding: 36px 32px;
  margin-bottom: 28px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  border-radius: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
  box-sizing: border-box;
}

.input-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 20px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-group label {
  font-weight: 700;
  color: var(--royal-dark, #122549);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.l2-input {
  padding: 13px 16px;
  border: 1.5px solid #cbd5e1;
  border-radius: 14px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  color: #1e293b;
  transition: all 0.2s ease;
  background: #ffffff;
  outline: none;
  box-sizing: border-box;
  width: 100%;
}

.l2-input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3.5px rgba(37, 99, 235, 0.12);
}

.alert-danger {
  background-color: #fee2e2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.action-row {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 8px;
}

.action-row .btn {
  min-height: 46px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* --- Results Section --- */
.result-card {
  padding: 36px 32px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 24px;
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  border-top: 5px solid #2563eb;
  margin-bottom: 32px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  animation: fadeIn 0.3s ease;
}

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

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1.5px solid rgba(226, 232, 240, 0.8);
}

.result-header h2 {
  font-size: 20px;
  font-weight: 800;
  color: var(--royal-dark, #122549);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-actions {
  display: flex;
  gap: 10px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1.5px solid #cbd5e1;
  background: white;
  color: var(--slate-700, #334155);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
}

.btn-icon:hover {
  background: #f1f5f9;
  color: #2563eb;
  border-color: #93c5fd;
  transform: translateY(-1px);
}

/* Primary Result Blocks */
.primary-result {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.age-block {
  flex: 1;
  min-width: 140px;
  text-align: center;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(241, 245, 249, 0.9));
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  border-radius: 20px;
  padding: 24px 20px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease;
}

.age-block:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.08);
  border-color: #bfdbfe;
}

.age-value {
  display: block;
  font-size: 52px;
  font-weight: 900;
  background: linear-gradient(135deg, #1a3566 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}

.age-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--slate-600, #475569);
  text-transform: uppercase;
  letter-spacing: 1.2px;
}

/* Secondary Results Grid */
.secondary-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.sec-card {
  background: rgba(248, 250, 252, 0.9);
  border: 1.5px solid rgba(226, 232, 240, 0.85);
  border-radius: 16px;
  padding: 16px 18px;
  transition: all 0.2s ease;
}

.sec-card:hover {
  background: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
}

.sec-card h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--slate-500, #64748b);
  margin: 0 0 6px 0;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.sec-card p {
  font-size: 18px;
  font-weight: 800;
  color: var(--royal-dark, #122549);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.sec-sub {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: #2563eb;
  margin-top: 4px;
}

/* --- Section Headlines & Subtitles --- */
.section-headline {
  font-size: 26px;
  font-weight: 900;
  color: var(--royal-dark, #122549);
  text-align: center;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 15px;
  color: var(--slate-600, #475569);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

/* --- Info Grid & Card Containers --- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.info-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 20px;
  border: 1px solid rgba(226, 232, 240, 0.9);
  padding: 28px 24px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.04);
  box-sizing: border-box;
}

.info-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.info-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(26, 53, 102, 0.1), rgba(37, 99, 235, 0.15));
  color: var(--royal, #1a3566);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.info-card-icon.gold {
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.12), rgba(245, 158, 11, 0.2));
  color: #d97706;
}

.info-card-header h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--royal-dark, #122549);
  margin: 0;
}

/* --- Step Items List --- */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a3566, #2563eb);
  color: #ffffff;
  font-size: 13.5px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(26, 53, 102, 0.22);
}

.step-text {
  flex: 1;
}

.step-text h5 {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--slate-800, #1e293b);
  margin: 0 0 3px 0;
}

.step-text p {
  font-size: 13.5px;
  color: var(--slate-600, #475569);
  line-height: 1.5;
  margin: 0;
}

/* --- Guidelines List --- */
.guidelines-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guideline-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(248, 250, 252, 0.85);
  border-radius: 14px;
  border: 1px solid rgba(226, 232, 240, 0.9);
}

.guideline-icon {
  font-size: 18px;
  color: #d97706;
  flex-shrink: 0;
  margin-top: 2px;
}

.guideline-text {
  font-size: 13.5px;
  color: var(--slate-700, #334155);
  line-height: 1.5;
  flex: 1;
}

.guideline-text strong {
  color: var(--slate-900, #0f172a);
}

/* --- SEO Article Block --- */
.article-block {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 20px;
  padding: 32px;
  margin-bottom: 60px;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.03);
}

.article-block h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--royal-dark, #122549);
  margin-top: 0;
  margin-bottom: 14px;
}

.article-block h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--royal-dark, #122549);
  margin-top: 24px;
  margin-bottom: 10px;
}

.article-block p {
  font-size: 14.5px;
  color: var(--slate-600, #475569);
  line-height: 1.7;
  margin-bottom: 14px;
}

.article-highlight-box {
  background: #eff6ff;
  border-left: 4px solid #2563eb;
  padding: 16px 20px;
  border-radius: 12px;
  margin: 20px 0;
}

.article-highlight-box h4 {
  margin: 0 0 6px 0;
  font-size: 15px;
  font-weight: 800;
  color: #1e3a8a;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-highlight-box p {
  margin: 0;
  font-size: 13.5px;
  color: #1e40af;
  line-height: 1.6;
}

/* --- FAQ Section & Accordion --- */
.faq-section {
  margin-bottom: 60px;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 860px;
  margin: 0 auto;
}

.accordion-item {
  background: #ffffff;
  border: 1.5px solid rgba(226, 232, 240, 0.9);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.03);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.accordion-item:hover {
  border-color: #bfdbfe;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.06);
}

.accordion-header {
  width: 100%;
  padding: 18px 22px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  color: var(--royal-dark, #122549);
  text-align: left;
  cursor: pointer;
  outline: none;
  transition: color 0.2s ease;
}

.accordion-header:hover {
  color: #2563eb;
}

.accordion-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
  font-size: 12px;
  flex-shrink: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s ease, color 0.2s ease;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  background: #2563eb;
  color: #ffffff;
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.accordion-body p {
  padding: 0 22px 20px 22px;
  margin: 0;
  font-size: 14px;
  color: var(--slate-600, #475569);
  line-height: 1.6;
}

/* ==========================================================================
   Professional 1-Page Print Stylesheet
   ========================================================================== */
@page {
  size: A4 portrait;
  margin: 0;
}

@media print {
  /* 1. Hide all website UI, navigation, inputs, and extras */
  #public-header-placeholder,
  #tools-header-placeholder,
  #public-footer-placeholder,
  #tools-footer-placeholder,
  #credit-cost-badge,
  .tool-header,
  .calculator-card,
  .feature-grid,
  .info-grid,
  .faq-section,
  .result-actions,
  .tool-workspace::before,
  .tool-workspace::after {
    display: none !important;
    height: 0 !important;
    max-height: 0 !important;
    overflow: hidden !important;
  }

  /* 2. Reset Body, HTML and Page Layout */
  html, body {
    background: #ffffff !important;
    color: #0f172a !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    overflow: visible !important;
    font-size: 11pt !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  .tool-workspace {
    padding: 20mm 15mm 0 15mm !important;
    margin: 0 auto !important;
    width: 100% !important;
    box-sizing: border-box !important;
    min-height: 0 !important;
    height: auto !important;
    background: none !important;
    overflow: visible !important;
    display: flex !important;
    justify-content: center !important;
  }

  .tool-container {
    max-width: 180mm !important;
    padding: 0 !important;
    margin: 0 auto !important;
    width: 100% !important;
  }

  /* 3. Strict 1-Page Result Card */
  #resultSection {
    display: block !important;
    visibility: visible !important;
    position: static !important;
    width: 100% !important;
    margin: 0 auto !important;
    padding: 0 !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    page-break-after: avoid !important;
    break-after: avoid !important;
  }

  .result-card {
    background: #ffffff !important;
    border: 1.5px solid #cbd5e1 !important;
    border-top: 5px solid #2563eb !important;
    border-radius: 20px !important;
    padding: 28px 24px !important;
    margin: 0 auto !important;
    width: 100% !important;
    max-width: 180mm !important;
    box-sizing: border-box !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }

  .result-header {
    margin-bottom: 26px !important;
    padding-bottom: 16px !important;
    border-bottom: 1.5px solid #e2e8f0 !important;
  }

  .result-header h2 {
    font-size: 20pt !important;
    font-weight: 800 !important;
    color: #122549 !important;
  }

  /* 4. Primary Stat Row (Crisp Dark Bold Numbers) */
  .primary-result {
    display: flex !important;
    justify-content: space-between !important;
    gap: 18px !important;
    margin-bottom: 22px !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }

  .age-block {
    flex: 1 !important;
    padding: 22px 16px !important;
    border: 1.5px solid #cbd5e1 !important;
    background: #f8fafc !important;
    border-radius: 18px !important;
    box-shadow: none !important;
    text-align: center !important;
  }

  .age-value {
    display: block !important;
    font-size: 48pt !important;
    font-weight: 900 !important;
    color: #1a3566 !important;
    -webkit-text-fill-color: #1a3566 !important;
    background: none !important;
    -webkit-background-clip: unset !important;
    line-height: 1 !important;
    margin-bottom: 6px !important;
  }

  .age-label {
    display: block !important;
    font-size: 11pt !important;
    font-weight: 800 !important;
    color: #475569 !important;
    text-transform: uppercase !important;
    letter-spacing: 1.5px !important;
  }

  /* 5. Secondary Grid */
  .secondary-results-grid {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 14px !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }

  .sec-card {
    background: #f8fafc !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 14px !important;
    padding: 14px 16px !important;
    box-shadow: none !important;
  }

  .sec-card h4 {
    font-size: 8.5pt !important;
    color: #64748b !important;
    font-weight: 700 !important;
    margin: 0 0 4px 0 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
  }

  .sec-card p {
    font-size: 14pt !important;
    font-weight: 800 !important;
    color: #0f172a !important;
    margin: 0 !important;
  }

  .sec-card .sec-sub {
    font-size: 8.5pt !important;
    color: #2563eb !important;
    font-weight: 700 !important;
    display: block !important;
    margin-top: 3px !important;
  }
}

/* ==========================================================================
   Comprehensive Responsive Breakpoints (Mobile, Tablet, Desktop)
   ========================================================================== */

/* --- Tablet (max-width: 768px) --- */
@media (max-width: 768px) {
  .calculator-card {
    padding: 24px 18px;
    border-radius: 20px;
  }

  .input-section {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .result-card {
    padding: 24px 18px;
    border-radius: 20px;
  }

  .primary-result {
    gap: 14px;
  }

  .age-value {
    font-size: 40px;
  }

  .action-row {
    flex-direction: column;
    width: 100%;
  }

  .action-row .btn {
    width: 100%;
  }
}

/* --- Mobile Devices (max-width: 480px) --- */
@media (max-width: 480px) {
  .tool-badge {
    font-size: 11px;
    padding: 5px 12px;
    gap: 6px;
    margin-bottom: 12px;
  }

  .calculator-card {
    padding: 20px 14px;
    border-radius: 16px;
  }

  .l2-input {
    padding: 11px 14px;
    font-size: 14px;
  }

  .primary-result {
    flex-direction: column;
    gap: 12px;
  }

  .age-block {
    width: 100%;
    padding: 16px;
    border-radius: 14px;
  }

  .age-value {
    font-size: 36px;
  }

  .age-label {
    font-size: 12.5px;
  }

  .secondary-results-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .sec-card {
    padding: 12px 14px;
    border-radius: 12px;
  }

  .sec-card p {
    font-size: 15px;
  }

  .info-card {
    padding: 20px 16px;
  }

  .article-block {
    padding: 20px 16px;
  }

  .accordion-header {
    padding: 14px 16px;
    font-size: 14px;
  }

  .accordion-body p {
    padding: 0 16px 16px 16px;
    font-size: 13px;
  }
}