/**
 * Dr. Anil Kumar's Eye Hospital - Clinical Calculators Stylesheet
 * Colors calibrated to Dr. Anil tokens: #072E48 (Navy-900), #0565E6 (Blue-600), #3EB828 (Green accent), #EEF3F8 (Alt BG)
 */

/* ==========================================================================
   Hub Page Header & Hero
   ========================================================================== */
.calc-hub-hero {
  background: linear-gradient(135deg, #072E48 0%, #0B3B5C 60%, #0A456E 100%);
  color: #FFFFFF;
  padding: 60px 0 50px;
  position: relative;
  overflow: hidden;
}

.calc-hub-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -80px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(5, 101, 230, 0.22) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.calc-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(62, 184, 40, 0.16);
  border: 1px solid rgba(62, 184, 40, 0.4);
  color: #4ADE80;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.calc-hero-badge svg {
  width: 14px;
  height: 14px;
}

.calc-hub-title {
  font-family: var(--font-display, "Newsreader", serif);
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  font-weight: 700;
  line-height: 1.18;
  color: #FFFFFF;
  margin: 0 0 16px;
  max-width: 820px;
}

.calc-hub-subtitle {
  font-family: var(--font-body, "Inter", sans-serif);
  font-size: 1.08rem;
  line-height: 1.65;
  color: #CBD5E1;
  max-width: 760px;
  margin: 0 0 24px;
}

.calc-trust-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.86rem;
  color: #94A3B8;
}

.calc-trust-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.calc-trust-item svg {
  color: #3EB828;
  width: 16px;
  height: 16px;
}

/* ==========================================================================
   Category Filter Tabs
   ========================================================================== */
.calc-filter-section {
  background: #FFFFFF;
  padding: 24px 0 16px;
  border-bottom: 1px solid #E2E8F0;
  position: sticky;
  top: 80px;
  z-index: 90;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.calc-filter-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.calc-filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: #EEF3F8;
  color: #072E48;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 9999px;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.calc-filter-pill:hover {
  background: #E2E8F0;
  color: #0565E6;
  text-decoration: none;
}

.calc-filter-pill.is-active {
  background: #0565E6;
  color: #FFFFFF;
  border-color: #0565E6;
  box-shadow: 0 2px 8px rgba(5, 101, 230, 0.25);
}

.calc-filter-pill .pill-count {
  background: rgba(0, 0, 0, 0.08);
  padding: 2px 7px;
  border-radius: 12px;
  font-size: 0.76rem;
  font-weight: 700;
}

.calc-filter-pill.is-active .pill-count {
  background: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
}

/* ==========================================================================
   Hub Grid & Cards
   ========================================================================== */
.calc-grid-section {
  background: #F8FAFC;
  padding: 50px 0 80px;
}

.calc-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 28px;
}

.calc-card {
  background: #FFFFFF;
  border-radius: 14px;
  border: 1px solid #E2E8F0;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  position: relative;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.calc-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(7, 46, 72, 0.09);
  border-color: #0565E6;
}

.calc-card-badge {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
  align-self: flex-start;
  background: #EEF5FD;
  color: #0565E6;
  border: 1px solid rgba(5, 101, 230, 0.16);
}

.calc-card-title {
  font-family: var(--font-display, "Newsreader", serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: #081C36;
  margin: 0 0 10px;
  line-height: 1.25;
}

.calc-card-desc {
  font-size: 0.92rem;
  line-height: 1.55;
  color: #64748B;
  margin: 0 0 20px;
  flex-grow: 1;
}

.calc-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid #EDF2F7;
  margin-top: auto;
}

.calc-card-doctor {
  font-size: 0.8rem;
  font-weight: 600;
  color: #072E48;
}

.calc-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #0565E6;
  text-decoration: none;
  transition: gap 0.2s ease;
}

.calc-card:hover .calc-card-btn {
  gap: 10px;
  color: #0452BA;
  text-decoration: none;
}

/* ==========================================================================
   Detail Calculator Layout
   ========================================================================== */
.calc-detail-header {
  background: linear-gradient(135deg, #072E48 0%, #0B3B5C 100%);
  color: #FFFFFF;
  padding: 48px 0 40px;
}

.calc-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: #94A3B8;
  margin-bottom: 16px;
}

.calc-breadcrumbs a {
  color: #CBD5E1;
  text-decoration: none;
}

.calc-breadcrumbs a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.calc-breadcrumbs span.sep {
  opacity: 0.5;
}

.calc-detail-title {
  font-family: var(--font-display, "Newsreader", serif);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
  color: #FFFFFF;
  margin: 0 0 12px;
  line-height: 1.2;
}

.calc-detail-desc {
  font-size: 1.05rem;
  line-height: 1.6;
  color: #CBD5E1;
  max-width: 780px;
  margin: 0;
}

.calc-detail-main {
  background: #F8FAFC;
  padding: 44px 0 70px;
}

.calc-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

@media (min-width: 1024px) {
  .calc-detail-grid {
    grid-template-columns: 7fr 5fr;
    gap: 40px;
    align-items: start;
  }
}

/* Calculator Interactive Engine Box */
.calc-engine-box {
  background: #FFFFFF;
  border-radius: 16px;
  border: 1px solid #E2E8F0;
  padding: 32px 28px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.calc-engine-title {
  font-family: var(--font-display, "Newsreader", serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: #081C36;
  margin: 0 0 8px;
  border-bottom: 2px solid #3EB828;
  padding-bottom: 8px;
  display: inline-block;
}

.calc-engine-instruction {
  font-size: 0.92rem;
  color: #64748B;
  margin: 0 0 24px;
}

/* Form Groups & Controls */
.calc-form-group {
  margin-bottom: 22px;
}

.calc-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: #072E48;
  margin-bottom: 8px;
}

.calc-helper {
  font-size: 0.78rem;
  color: #64748B;
  margin-top: 4px;
}

.calc-input,
.calc-select {
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1.5px solid #CBD5E1;
  font-size: 0.95rem;
  color: #072E48;
  background: #FFFFFF;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
  font-family: var(--font-body, "Inter", sans-serif);
}

.calc-input:focus,
.calc-select:focus {
  outline: none;
  border-color: #0565E6;
  box-shadow: 0 0 0 3px rgba(5, 101, 230, 0.12);
}

/* Radio Pill Group */
.calc-radio-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.calc-radio-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 1.5px solid #CBD5E1;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #072E48;
  cursor: pointer;
  background: #FFFFFF;
  transition: all 0.18s ease;
  text-align: center;
}

.calc-radio-label input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calc-radio-label:has(input[type="radio"]:checked) {
  border-color: #0565E6;
  background: #EEF5FD;
  color: #0565E6;
  box-shadow: 0 2px 6px rgba(5, 101, 230, 0.1);
}

/* Real-Time Result Box (Sticky on Desktop) */
.calc-result-panel {
  position: sticky;
  top: 110px;
}

.calc-result-card {
  background: #FFFFFF;
  border-radius: 16px;
  border: 1px solid #E2E8F0;
  padding: 30px 24px;
  box-shadow: 0 4px 16px rgba(7, 46, 72, 0.06);
  border-top: 5px solid #0565E6;
}

.calc-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.calc-result-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #64748B;
}

.calc-result-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.calc-result-value-box {
  background: #EEF3F8;
  border-radius: 12px;
  padding: 20px 18px;
  text-align: center;
  margin-bottom: 20px;
}

.calc-result-number {
  font-family: var(--font-display, "Newsreader", serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: #072E48;
  line-height: 1.1;
  margin-bottom: 4px;
}

.calc-result-unit {
  font-size: 0.88rem;
  font-weight: 600;
  color: #64748B;
}

.calc-result-stage {
  font-size: 1.1rem;
  font-weight: 700;
  color: #081C36;
  margin: 0 0 8px;
}

.calc-result-explanation {
  font-size: 0.92rem;
  line-height: 1.55;
  color: #475569;
  margin: 0 0 24px;
}

/* Call to Action Inside Result Card */
.calc-result-cta-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.calc-cta-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #0565E6;
  color: #FFFFFF !important;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 20px;
  border-radius: 10px;
  text-decoration: none;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.calc-cta-btn-primary:hover {
  background: #0452BA;
  box-shadow: 0 4px 12px rgba(5, 101, 230, 0.28);
  text-decoration: none;
}

.calc-cta-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #FFFFFF;
  color: #072E48 !important;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 11px 18px;
  border-radius: 10px;
  border: 1.5px solid #CBD5E1;
  text-decoration: none;
  transition: all 0.2s ease;
}

.calc-cta-btn-secondary:hover {
  border-color: #072E48;
  background: #EEF3F8;
  text-decoration: none;
}

/* Doctor Quote & Profile Box */
.calc-doctor-box {
  background: #FFFFFF;
  border-radius: 14px;
  border: 1px solid #E2E8F0;
  padding: 24px;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.calc-doctor-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #0565E6;
}

.calc-doctor-quote {
  font-family: var(--font-display, "Newsreader", serif);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.5;
  color: #081C36;
  margin: 0;
  position: relative;
  padding-left: 18px;
  border-left: 3px solid #3EB828;
}

.calc-doctor-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}

.calc-doctor-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: #072E48;
  margin: 0;
}

.calc-doctor-spec {
  font-size: 0.8rem;
  color: #64748B;
  margin: 0;
}

/* Clinical References & Guidance Accordion */
.calc-guidance-box {
  background: #FFFFFF;
  border-radius: 14px;
  border: 1px solid #E2E8F0;
  padding: 28px 24px;
  margin-top: 32px;
}

.calc-guidance-title {
  font-family: var(--font-display, "Newsreader", serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: #081C36;
  margin: 0 0 16px;
}

.calc-guidance-table {
  width: 100%;
  border-collapse: collapse;
}

.calc-guidance-table th {
  background: #EEF3F8;
  color: #072E48;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 2px solid #CBD5E1;
}

.calc-guidance-table td {
  padding: 12px 14px;
  font-size: 0.88rem;
  color: #334155;
  border-bottom: 1px solid #EDF2F7;
  line-height: 1.5;
}

.calc-guidance-table tr:last-child td {
  border-bottom: none;
}

.calc-guidance-table tr:hover td {
  background: #F8FAFC;
}

/* Related Calculators Grid */
.calc-related-section {
  background: #EEF3F8;
  padding: 50px 0 70px;
  border-top: 1px solid #E2E8F0;
}

.calc-related-title {
  font-family: var(--font-display, "Newsreader", serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: #081C36;
  margin: 0 0 24px;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .calc-hub-hero {
    padding: 40px 0 34px;
  }
  .calc-filter-section {
    top: 70px;
    padding: 14px 0 12px;
  }
  .calc-filter-nav {
    gap: 6px;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }
  .calc-filter-pill {
    white-space: nowrap;
    font-size: 0.8rem;
    padding: 6px 12px;
  }
  .calc-engine-box {
    padding: 22px 18px;
  }
  .calc-result-card {
    padding: 22px 18px;
  }
}