/* ═══════════════════════════════════════════════════
   CalcVerse Pro — Calculator Page Styles
   Layout, inputs, results, formulas, related calcs
   ═══════════════════════════════════════════════════ */

/* ═══ CALCULATOR PAGE LAYOUT ═══ */
.calc-page{
  padding-top:100px;
  padding-bottom:var(--space-8);
}

/* Calculator Hero */
.calc-hero{
  text-align:center;
  margin-bottom:var(--space-6);
  padding:var(--space-6) 0;
}
.calc-hero h1{
  font-family:var(--font-display);
  font-size:var(--text-4xl);
  font-weight:700;
  margin-bottom:var(--space-2);
  line-height:1.2;
}
.calc-hero p{
  color:var(--text-secondary);
  font-size:var(--text-lg);
  max-width:700px;
  margin:0 auto var(--space-3);
  line-height:1.6;
}
.calc-hero-actions{
  display:flex;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap;
}

/* 2-Column Calculator Layout */
.calc-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--space-4);
  max-width:1100px;
  margin:0 auto;
  align-items:start;
}
.calc-input-panel{
  padding:var(--space-4);
}
.calc-result-panel{
  padding:var(--space-4);
  position:sticky;
  top:90px;
}

/* Calculator Input Form Enhancements */
.calc-form .input-group{
  margin-bottom:var(--space-3);
}
.calc-form .input-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--space-2);
}
.calc-form .radio-group{
  display:flex;
  gap:var(--space-2);
  flex-wrap:wrap;
}
.calc-form .radio-option{
  display:flex;align-items:center;gap:8px;
  padding:10px 16px;
  background:var(--bg-glass);
  border:1px solid var(--border-subtle);
  border-radius:var(--radius-md);
  cursor:pointer;
  transition:all var(--dur-fast);
  font-size:var(--text-sm);
}
.calc-form .radio-option:hover{
  border-color:var(--border-active);
}
.calc-form .radio-option input[type="radio"]{
  accent-color:var(--violet);
  width:16px;height:16px;
}
.calc-form .radio-option.selected,
.calc-form .radio-option:has(input:checked){
  background:var(--violet-dim);
  border-color:var(--border-active);
}

.calc-form .range-slider{
  width:100%;
  height:6px;
  -webkit-appearance:none;
  appearance:none;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  border-radius:3px;
  outline:none;
}
.calc-form .range-slider::-webkit-slider-thumb{
  -webkit-appearance:none;
  width:20px;height:20px;
  background:var(--violet);
  border-radius:50%;
  cursor:pointer;
  box-shadow:0 0 8px var(--violet-glow);
}
.calc-form .range-slider::-moz-range-thumb{
  width:20px;height:20px;
  background:var(--violet);
  border-radius:50%;
  cursor:pointer;
  border:none;
  box-shadow:0 0 8px var(--violet-glow);
}
.calc-form .range-value{
  display:flex;justify-content:space-between;
  font-size:var(--text-xs);color:var(--text-muted);
  margin-top:4px;
}

/* Calculate Button */
.calc-submit{
  width:100%;
  margin-top:var(--space-3);
}

/* ═══ RESULT ENHANCEMENTS ═══ */
.result-main{
  text-align:center;
  padding:var(--space-4);
  margin-bottom:var(--space-3);
}
.result-main .result-value{
  font-size:var(--text-4xl);
  margin-bottom:4px;
}
.result-main .result-label{
  font-size:var(--text-sm);
  color:var(--text-secondary);
}

.result-breakdown{
  padding:var(--space-3);
  margin-top:var(--space-3);
}
.result-breakdown h3{
  font-family:var(--font-display);
  font-size:var(--text-lg);
  font-weight:600;
  margin-bottom:var(--space-2);
  color:var(--text-primary);
}

/* Result Mini Cards */
.result-mini-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:var(--space-2);
}
.result-mini{
  padding:var(--space-2) var(--space-3);
  background:rgba(255,255,255,0.03);
  border-radius:var(--radius-md);
  border:1px solid var(--border-subtle);
}
.result-mini-label{
  font-size:var(--text-xs);
  color:var(--text-muted);
  text-transform:uppercase;
  letter-spacing:0.05em;
  margin-bottom:4px;
}
.result-mini-value{
  font-family:var(--font-mono);
  font-weight:600;
  font-size:var(--text-lg);
  color:var(--text-primary);
}

/* ═══ FORMULA DISPLAY ═══ */
.formula-section{
  max-width:900px;
  margin:var(--space-8) auto;
}
.formula-section h2{
  font-family:var(--font-display);
  font-size:var(--text-2xl);
  font-weight:700;
  margin-bottom:var(--space-3);
}
.formula-box{
  background:var(--glass-bg);
  border:1px solid var(--border-glass);
  border-radius:var(--radius-lg);
  padding:var(--space-4);
  text-align:center;
  overflow-x:auto;
}
.formula-display{
  font-family:var(--font-mono);
  font-size:var(--text-xl);
  color:var(--cyan);
  line-height:2;
  word-break:break-word;
}
.formula-legend{
  margin-top:var(--space-3);
  padding-top:var(--space-2);
  border-top:1px solid var(--border-subtle);
}
.formula-legend p{
  font-size:var(--text-sm);
  color:var(--text-secondary);
  line-height:1.8;
  margin-bottom:4px;
}
.formula-legend strong{
  color:var(--cyan);
}

/* ═══ HOW TO USE ═══ */
.howto-section{
  max-width:900px;
  margin:var(--space-8) auto;
}
.howto-section h2{
  font-family:var(--font-display);
  font-size:var(--text-2xl);
  font-weight:700;
  margin-bottom:var(--space-4);
}
.howto-steps{
  counter-reset:howto;
  list-style:none;
  padding:0;
}
.howto-steps li{
  counter-increment:howto;
  display:flex;
  align-items:flex-start;
  gap:var(--space-3);
  padding:var(--space-3) 0;
  border-bottom:1px solid var(--border-subtle);
}
.howto-steps li:last-child{border-bottom:none}
.howto-steps li::before{
  content:counter(howto);
  min-width:36px;height:36px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--violet),var(--cyan));
  color:#fff;
  font-family:var(--font-display);
  font-weight:700;
  font-size:var(--text-base);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.howto-steps li p{
  color:var(--text-secondary);
  line-height:1.6;
}
.howto-steps li strong{
  color:var(--text-primary);
  display:block;
  margin-bottom:4px;
  font-family:var(--font-display);
}

/* ═══ SEO ARTICLE ON CALC PAGE ═══ */
.calc-article{
  max-width:900px;
  margin:var(--space-8) auto;
  padding:var(--space-6);
}
.calc-article h2{
  font-family:var(--font-display);
  font-size:var(--text-2xl);
  font-weight:700;
  margin-bottom:var(--space-3);
  color:var(--text-primary);
}
.calc-article h3{
  font-family:var(--font-display);
  font-size:var(--text-xl);
  font-weight:600;
  margin-top:var(--space-4);
  margin-bottom:var(--space-2);
  color:var(--text-primary);
}
.calc-article p{
  color:var(--text-secondary);
  line-height:1.8;
  margin-bottom:var(--space-3);
}
.calc-article ul,.calc-article ol{
  color:var(--text-secondary);
  line-height:1.8;
  margin-bottom:var(--space-3);
  padding-left:var(--space-4);
}

/* ═══ RELATED CALCULATORS ═══ */
.related-section{
  max-width:1100px;
  margin:var(--space-8) auto;
}
.related-section h2{
  font-family:var(--font-display);
  font-size:var(--text-2xl);
  font-weight:700;
  margin-bottom:var(--space-4);
  text-align:center;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--space-3);
}
.related-card{
  padding:var(--space-3);
  text-align:center;
  text-decoration:none;
  display:block;
  transition:all var(--dur-base) var(--ease-out);
}
.related-card:hover{
  color:var(--text-primary);
}
.related-card-icon{
  width:48px;height:48px;
  border-radius:var(--radius-md);
  background:linear-gradient(135deg,var(--violet-dim),rgba(0,212,255,0.1));
  display:flex;align-items:center;justify-content:center;
  margin:0 auto var(--space-2);
  font-size:20px;color:var(--cyan);
}
.related-card-name{
  font-family:var(--font-display);
  font-weight:600;
  font-size:var(--text-base);
  color:var(--text-primary);
  margin-bottom:4px;
}
.related-card-desc{
  font-size:var(--text-sm);
  color:var(--text-secondary);
  line-height:1.4;
}

/* ═══ AMORTIZATION TABLE ═══ */
.amort-table-container{
  max-height:400px;
  overflow-y:auto;
  margin-top:var(--space-3);
  border-radius:var(--radius-md);
  border:1px solid var(--border-subtle);
  scrollbar-width:thin;
  scrollbar-color:var(--violet-dim) transparent;
}
.amort-table-container::-webkit-scrollbar{width:6px}
.amort-table-container::-webkit-scrollbar-thumb{background:var(--violet-dim);border-radius:3px}
.amort-table{
  width:100%;border-collapse:collapse;font-size:var(--text-sm);
}
.amort-table th{
  position:sticky;top:0;
  background:rgba(15,15,58,0.95);
  backdrop-filter:blur(8px);
  padding:10px 12px;
  text-align:right;
  font-family:var(--font-display);
  font-weight:600;
  color:var(--text-primary);
  border-bottom:2px solid var(--border-active);
  white-space:nowrap;
}
.amort-table th:first-child{text-align:center}
.amort-table td{
  padding:8px 12px;
  text-align:right;
  color:var(--text-secondary);
  border-bottom:1px solid var(--border-subtle);
  font-family:var(--font-mono);
  font-size:var(--text-xs);
}
.amort-table td:first-child{text-align:center;color:var(--text-muted)}
.amort-table tr:hover td{background:rgba(255,255,255,0.02)}

/* ═══ RESPONSIVE ═══ */
@media(max-width:768px){
  .calc-layout{
    grid-template-columns:1fr;
  }
  .calc-result-panel{
    position:static;
  }
  .calc-form .input-row{
    grid-template-columns:1fr;
  }
  .result-mini-grid{
    grid-template-columns:1fr;
  }
  .related-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .calc-hero h1{
    font-size:var(--text-3xl);
  }
}
@media(max-width:480px){
  .calc-page{
    padding-top:80px;
  }
  .related-grid{
    grid-template-columns:1fr;
  }
  .calc-hero h1{
    font-size:var(--text-2xl);
  }
}

/* ═══════════════════════════════════════════════════
   VISUAL ENHANCEMENTS — CalcVerse Pro v2.1
   ═══════════════════════════════════════════════════ */

/* ═══ 1. ANIMATED SECTION DIVIDERS ═══ */
.section-divider{
  position:relative;
  height:1px;
  margin:var(--space-6) auto;
  max-width:900px;
  overflow:hidden;
}
.section-divider::after{
  content:'';
  position:absolute;
  top:0;
  left:50%;
  width:0;
  height:1px;
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  transform:translateX(-50%);
  animation:dividerExpand 1.2s var(--ease-out) forwards;
}
@keyframes dividerExpand{
  0%  { width:0; opacity:0; }
  100%{ width:100%; opacity:1; }
}

/* ═══ 2. INPUT FOCUS GLOW ═══ */
.form-input:focus,
.calc-form input[type="number"]:focus,
.calc-form input[type="text"]:focus,
.calc-form select:focus{
  outline:none;
  border-color:transparent;
  box-shadow:0 4px 20px var(--violet-glow), 0 0 0 1px var(--border-active);
  background-image:linear-gradient(var(--bg-glass),var(--bg-glass)),
                   linear-gradient(90deg,var(--violet),var(--cyan));
  background-origin:border-box;
  background-clip:padding-box,border-box;
  animation:focusSweep .6s var(--ease-out);
}
@keyframes focusSweep{
  0%  { box-shadow:0 0 0 transparent; }
  50% { box-shadow:0 4px 24px var(--violet-glow), 0 0 0 2px var(--border-active); }
  100%{ box-shadow:0 4px 20px var(--violet-glow), 0 0 0 1px var(--border-active); }
}

/* ═══ 3. RESULT ANIMATION ═══ */
.result-value{
  transition:transform var(--dur-base) var(--ease-spring),
             color var(--dur-base) ease;
}
.result-value.result-updated{
  animation:resultPop .5s var(--ease-spring);
  color:var(--cyan);
}
@keyframes resultPop{
  0%  { transform:scale(1);   opacity:0.6; }
  50% { transform:scale(1.08); opacity:1; }
  100%{ transform:scale(1);   opacity:1; }
}

/* ═══ 4. CALCULATING SHIMMER ═══ */
.calc-result-panel.loading{
  position:relative;
  pointer-events:none;
}
.calc-result-panel.loading::after{
  content:'';
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:linear-gradient(
    110deg,
    transparent 30%,
    rgba(123,47,255,0.08) 45%,
    rgba(0,212,255,0.1) 55%,
    transparent 70%
  );
  background-size:250% 100%;
  animation:shimmer 1.4s ease-in-out infinite;
  z-index:2;
  pointer-events:none;
}
@keyframes shimmer{
  0%  { background-position:250% 0; }
  100%{ background-position:-250% 0; }
}

/* ═══ 5. GLASS CARD DEPTH ENHANCEMENT ═══ */
.calc-input-panel.glass-card,
.calc-result-panel.glass-card{
  box-shadow:
    var(--shadow-md),
    inset 0 1px 0 rgba(255,255,255,0.06),
    inset 0 -1px 0 rgba(0,0,0,0.25);
  border-image:linear-gradient(
    160deg,
    rgba(123,47,255,0.35),
    rgba(0,212,255,0.2),
    rgba(255,255,255,0.05)
  ) 1;
  border-width:1px;
  border-style:solid;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(123,47,255,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(0,212,255,0.04) 0%, transparent 60%),
    var(--glass-bg);
  backdrop-filter:var(--glass-blur);
}

/* ═══ 6. CHART CONTAINER ═══ */
.chart-container,
.calc-chart-wrap{
  border-radius:var(--radius-lg);
  border:1px solid var(--border-subtle);
  padding:var(--space-3);
  margin-top:var(--space-3);
  background:rgba(0,0,0,0.15);
  animation:chartFadeIn .6s var(--ease-out) both;
}
.chart-container canvas,
.calc-chart-wrap canvas{
  border-radius:var(--radius-md);
}
@keyframes chartFadeIn{
  from{ opacity:0; transform:translateY(8px); }
  to  { opacity:1; transform:translateY(0); }
}

/* ═══ 7. ANIMATED STEP NUMBERS ═══ */
.howto-steps li::before{
  transition:box-shadow var(--dur-base) ease, transform var(--dur-base) var(--ease-spring);
  box-shadow:0 2px 8px rgba(123,47,255,0.25);
}
.howto-steps li:hover::before{
  animation:stepPulse 1s ease infinite;
  transform:scale(1.1);
  box-shadow:0 4px 16px var(--violet-glow), 0 0 24px rgba(0,212,255,0.15);
}
@keyframes stepPulse{
  0%,100%{ box-shadow:0 4px 16px var(--violet-glow); }
  50%    { box-shadow:0 4px 24px var(--cyan-glow), 0 0 32px var(--violet-glow); }
}

/* ═══ 8. FAQ ACCORDION ENHANCEMENT ═══ */
.faq-item{
  transition:background var(--dur-base) ease,
             border-color var(--dur-base) ease,
             border-left-width var(--dur-fast) ease;
  border-left:3px solid transparent;
  overflow:hidden;
}
.faq-item[open]{
  background:rgba(123,47,255,0.04) !important;
  border-left-color:var(--violet);
}
.faq-item summary{
  transition:color var(--dur-fast);
}
.faq-item summary:hover{
  color:var(--cyan);
}
.faq-item p{
  overflow:hidden;
  animation:faqSlideDown .35s var(--ease-out);
}
@keyframes faqSlideDown{
  from{ opacity:0; max-height:0;  transform:translateY(-6px); }
  to  { opacity:1; max-height:500px; transform:translateY(0); }
}

/* ═══ 9. PRINT STYLES ═══ */
@media print{
  body{
    background:#fff !important;
    color:#000 !important;
  }
  .site-nav, .site-footer, .cookie-banner,
  .ad-wrapper, .btn-primary, .btn-secondary,
  .calc-hero-actions, .related-section,
  .section-divider, .breadcrumb-nav,
  .pulse-glow, [class*="ad-"]{
    display:none !important;
  }
  .calc-page{
    padding-top:0 !important;
  }
  .glass-card, .glow-border{
    background:#fff !important;
    border:1px solid #ddd !important;
    box-shadow:none !important;
    backdrop-filter:none !important;
  }
  .calc-layout{
    display:block !important;
  }
  .calc-input-panel,
  .calc-result-panel{
    position:static !important;
    padding:1rem !important;
    margin-bottom:1rem !important;
  }
  .result-value,
  .result-mini-value{
    color:#000 !important;
  }
  .result-label,
  .result-mini-label{
    color:#333 !important;
  }
  h1, h2, h3{
    color:#000 !important;
    -webkit-text-fill-color:#000 !important;
    background:none !important;
  }
  p, li, td, th{
    color:#222 !important;
  }
  .formula-display{
    color:#111 !important;
  }
}

/* ═══ 10. RESPONSIVE TOUCH IMPROVEMENTS ═══ */
@media(max-width:768px){
  .calc-form input[type="number"],
  .calc-form input[type="text"],
  .calc-form select,
  .calc-form .radio-option,
  .btn-primary, .btn-secondary,
  .faq-item summary{
    min-height:48px;
    font-size:var(--text-base);
  }
  .calc-form .input-group{
    margin-bottom:var(--space-3);
  }
  .calc-form .radio-group{
    gap:var(--space-2);
  }
  .calc-hero-actions{
    gap:var(--space-2);
  }
  .calc-hero-actions .btn-secondary{
    flex:1 1 auto;
    min-height:48px;
    justify-content:center;
  }
  .faq-item{
    padding:var(--space-3) !important;
  }
}

/* ═══ CATEGORY BADGE ═══ */
.calc-category-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 16px;
  font-size:var(--text-xs);
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:0.08em;
  color:#fff;
  border-radius:var(--radius-pill);
  background:linear-gradient(135deg,var(--violet),var(--cyan));
  margin-bottom:var(--space-2);
  animation:badgeFloat 3s ease-in-out infinite;
  box-shadow:0 2px 12px var(--violet-glow);
}
@keyframes badgeFloat{
  0%,100%{ transform:translateY(0); }
  50%    { transform:translateY(-4px); }
}

/* ═══ COPY RESULTS BUTTON ═══ */
.copy-results-btn{
  background:rgba(255,255,255,0.06);
  border:1px solid var(--border-subtle);
  color:var(--text-secondary);
  padding:6px 10px;
  border-radius:var(--radius-sm);
  cursor:pointer;
  font-size:var(--text-sm);
  transition:all var(--dur-fast);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.copy-results-btn:hover{
  background:var(--violet-dim);
  color:var(--text-primary);
  border-color:var(--border-active);
}
.copy-results-btn.copied{
  background:rgba(0,229,160,0.15);
  color:var(--emerald);
  border-color:var(--emerald);
}

/* ═══ COPY TOAST ═══ */
.copy-toast{
  position:fixed;
  bottom:2rem;
  left:50%;
  transform:translateX(-50%) translateY(20px);
  background:var(--glass-bg);
  backdrop-filter:var(--glass-blur);
  border:1px solid var(--border-glass);
  color:var(--emerald);
  padding:10px 24px;
  border-radius:var(--radius-pill);
  font-size:var(--text-sm);
  font-weight:600;
  z-index:var(--z-toast);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s ease, transform .3s ease;
  box-shadow:var(--shadow-md);
}
.copy-toast.show{
  opacity:1;
  transform:translateX(-50%) translateY(0);
}

/* ═══ RESET BUTTON ═══ */
.calc-reset-btn{
  width:100%;
  margin-top:var(--space-2);
  padding:12px;
  font-size:var(--text-base);
  font-family:var(--font-display);
  font-weight:600;
  color:var(--text-secondary);
  background:rgba(255,255,255,0.04);
  border:1px solid var(--border-subtle);
  border-radius:var(--radius-md);
  cursor:pointer;
  transition:all var(--dur-fast);
}
.calc-reset-btn:hover{
  background:rgba(255,77,109,0.08);
  border-color:var(--rose);
  color:var(--rose);
}

/* 7D calculator workflow additions */
.cv-personalized-rails{
  max-width:1100px;
  margin:0 auto var(--space-5);
  padding:var(--space-3);
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--space-3);
}
.cv-personalized-rails h2{
  font-family:var(--font-display);
  font-size:var(--text-base);
  color:var(--text-primary);
  display:flex;
  align-items:center;
  gap:8px;
  margin:0 0 var(--space-2);
}
.cv-personalized-rails h2 i{color:var(--cv-teal,#23f0c7)}
.cv-rail-list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.cv-rail-item{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:54px;
  padding:10px 12px;
  border:1px solid rgba(255,255,255,.1);
  border-radius:12px;
  background:rgba(255,255,255,.045);
  color:var(--text-primary);
  text-decoration:none;
}
.cv-rail-item:hover{
  color:var(--text-primary);
  border-color:rgba(35,240,199,.38);
  background:rgba(35,240,199,.07);
}
.cv-rail-icon{
  width:34px;
  height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  color:#06111e;
  background:linear-gradient(135deg,var(--cv-teal,#23f0c7),var(--cv-sky,#4cc9f0));
  flex:0 0 auto;
}
.cv-rail-item strong{
  display:block;
  font-size:var(--text-sm);
  line-height:1.25;
}
.cv-rail-item small{
  display:block;
  color:var(--text-muted);
  font-size:var(--text-xs);
  margin-top:2px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  max-width:360px;
}
.cv-rail-empty{
  color:var(--text-muted);
  font-size:var(--text-sm);
  margin:0;
  padding:12px;
  border:1px dashed rgba(255,255,255,.12);
  border-radius:12px;
}
.cv-favorite-btn.is-active{
  background:linear-gradient(135deg,var(--cv-amber,#ffd166),var(--cv-teal,#23f0c7))!important;
  color:#06111e!important;
  border-color:transparent!important;
}
.calc-layout{
  grid-template-columns:minmax(0,1.02fr) minmax(340px,.98fr);
}
.calc-result-panel{
  top:92px;
}
.copy-results-btn{
  min-height:36px;
}
.calc-article,
.formula-section .glass-card,
.howto-section .glass-card,
.faq-section .glass-card{
  overflow-wrap:anywhere;
}

@media(max-width:900px){
  .cv-personalized-rails{
    grid-template-columns:1fr;
  }
  .calc-layout{
    grid-template-columns:1fr;
  }
  .calc-result-panel{
    position:static;
  }
}
@media(max-width:520px){
  .cv-personalized-rails{
    padding:var(--space-2);
    margin-bottom:var(--space-4);
  }
  .calc-input-panel,
  .calc-result-panel{
    padding:var(--space-3);
  }
  .calc-hero-actions .btn-secondary,
  .calc-hero-actions .cv-favorite-btn{
    width:100%;
    justify-content:center;
  }
  .cv-rail-item small{max-width:220px}
}