/* ================================================================
   MEDICALC PRO — shared.css
   Global stylesheet shared across all pages and tool files.
   DO NOT add tool-specific styles here.
   Last updated: 2026
   ================================================================ */


/* ================================================================
   1. DESIGN TOKENS & THEME VARIABLES
   ================================================================ */
:root {
  /* — Brand Colors — */
  --col-primary:      #1a56db;
  --col-primary-dk:   #1447b2;
  --col-primary-lt:   #deeaff;
  --col-accent:       #0ea5e9;

  /* — Semantic Status Colors — */
  --col-green:        #059669;
  --col-green-lt:     #d1fae5;
  --col-amber:        #d97706;
  --col-amber-lt:     #fef3c7;
  --col-red:          #dc2626;
  --col-red-lt:       #fee2e2;
  --col-blue:         #2563eb;
  --col-blue-lt:      #dbeafe;
  --col-purple:       #7c3aed;
  --col-purple-lt:    #ede9fe;
  --col-teal:         #0d9488;
  --col-teal-lt:      #ccfbf1;
  --col-rose:         #e11d48;
  --col-rose-lt:      #ffe4e6;
  --col-indigo:       #4338ca;
  --col-indigo-lt:    #e0e7ff;
  --col-orange:       #ea580c;
  --col-orange-lt:    #ffedd5;

  /* — Surface & Background (Light) — */
  --col-bg:           #f4f6fb;
  --col-surface:      #ffffff;
  --col-surface2:     #eef1f8;
  --col-surface3:     #e4e8f3;
  --col-border:       #dde2ef;
  --col-border-dk:    #c8d0e4;

  /* — Text (Light) — */
  --col-text:         #0d1b3e;
  --col-text-2:       #4a5778;
  --col-text-3:       #8a93b0;
  --col-text-inv:     #ffffff;

  /* — Shadows — */
  --sh-xs:   0 1px 2px  rgba(10,30,80,0.06);
  --sh-sm:   0 2px 8px  rgba(10,30,80,0.08);
  --sh-md:   0 6px 24px rgba(10,30,80,0.10);
  --sh-lg:   0 12px 48px rgba(10,30,80,0.13);
  --sh-xl:   0 24px 80px rgba(10,30,80,0.18);
  --sh-focus: 0 0 0 3px rgba(26,86,219,0.18);

  /* — Typography — */
  --font-ui:      'Sora', sans-serif;
  --font-display: 'Lora', serif;

  /* — Border Radii — */
  --r-xs:   4px;
  --r-sm:   8px;
  --r-md:   14px;
  --r-lg:   20px;
  --r-xl:   28px;
  --r-pill: 999px;

  /* — Spacing scale — */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  20px;
  --sp-6:  24px;
  --sp-8:  32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;

  /* — Transitions — */
  --t-fast: 0.15s ease;
  --t-std:  0.25s ease;
  --t-slow: 0.4s ease;

  /* — Z-index scale — */
  --z-base:    1;
  --z-card:    10;
  --z-sticky:  100;
  --z-nav:     200;
  --z-modal:   400;
  --z-toast:   500;
}

/* — Dark Theme Overrides — */
[data-theme="dark"] {
  --col-bg:        #080f1e;
  --col-surface:   #111827;
  --col-surface2:  #1c2540;
  --col-surface3:  #243058;
  --col-border:    #253055;
  --col-border-dk: #334070;
  --col-text:      #e8edf8;
  --col-text-2:    #8fa3cc;
  --col-text-3:    #4f6299;
  --col-primary-lt: #1a2f5e;
  --col-green-lt:   #052e1a;
  --col-amber-lt:   #2d1f02;
  --col-red-lt:     #2d0a0a;
  --col-blue-lt:    #0d1f4a;
  --col-purple-lt:  #1e0f42;
  --col-teal-lt:    #042220;
  --col-rose-lt:    #2d071a;
  --col-indigo-lt:  #130f38;
  --col-orange-lt:  #2d1200;
  --sh-xs:  0 1px 2px  rgba(0,0,0,0.40);
  --sh-sm:  0 2px 8px  rgba(0,0,0,0.40);
  --sh-md:  0 6px 24px rgba(0,0,0,0.50);
  --sh-lg:  0 12px 48px rgba(0,0,0,0.60);
  --sh-xl:  0 24px 80px rgba(0,0,0,0.70);
}


/* ================================================================
   2. RESET & BASE
   ================================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-ui);
  background: var(--col-bg);
  color: var(--col-text);
  line-height: 1.65;
  transition: background var(--t-std), color var(--t-std);
  overflow-x: hidden;
  min-height: 100vh;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
}
a:hover { text-decoration: none; }
a:focus-visible {
  outline: 2px solid var(--col-primary);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

/* Lists */
ul, ol { list-style: none; }

/* Images */
img {
  display: block;
  max-width: 100%;
}

/* Buttons base */
button {
  font-family: var(--font-ui);
  cursor: pointer;
  border: none;
  background: none;
}

/* Inputs base */
input, select, textarea {
  font-family: var(--font-ui);
}

/* Remove number input spinners */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
}
input[type="number"] {
  -moz-appearance: textfield;
}

/* HR */
hr {
  border: none;
  border-top: 1px solid var(--col-border);
  margin: var(--sp-6) 0;
}


/* ================================================================
   3. LAYOUT UTILITIES
   ================================================================ */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Two-column tool layout: main content + sidebar */
.layout-tool {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 28px;
  align-items: start;
}

/* Three-column grid */
.layout-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* Two-column grid */
.layout-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* Four-column grid */
.layout-4col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* Inline row */
.flex-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

/* Visibility */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Section spacing */
.section    { padding: var(--sp-16) 0; }
.section-sm { padding: var(--sp-10) 0; }
.section-xs { padding: var(--sp-6) 0; }


/* ================================================================
   4. TYPOGRAPHY
   ================================================================ */

/* Display / headings */
.t-display {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.18;
  color: var(--col-text);
}

h1, .h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  font-weight: 600;
  line-height: 1.18;
  color: var(--col-text);
}

h2, .h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--col-text);
}

h3, .h3 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--col-text);
}

h4, .h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--col-text);
}

p { margin-bottom: 0; }

.text-muted  { color: var(--col-text-2); }
.text-faint  { color: var(--col-text-3); }
.text-primary{ color: var(--col-primary); }
.text-green  { color: var(--col-green); }
.text-red    { color: var(--col-red); }
.text-amber  { color: var(--col-amber); }
.text-sm     { font-size: 0.875rem; }
.text-xs     { font-size: 0.78rem; }
.text-lg     { font-size: 1.05rem; }
.text-center { text-align: center; }
.font-bold   { font-weight: 700; }
.font-semibold { font-weight: 600; }

/* Section label (eyebrow) */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--col-primary);
  margin-bottom: var(--sp-3);
}
.section-label::before {
  content: '';
  display: block;
  width: 18px; height: 2px;
  background: var(--col-primary);
  border-radius: 2px;
}


/* ================================================================
   5. HEADER
   ================================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--col-border);
  transition: background var(--t-std), border-color var(--t-std);
}
[data-theme="dark"] .site-header {
  background: rgba(8,15,30,0.92);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 66px;
  gap: var(--sp-2);
}

/* — Logo — */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: var(--sp-3);
  text-decoration: none;
}
.logo-mark {
  width: 38px; height: 38px;
  background: var(--col-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(26,86,219,0.35);
  transition: box-shadow var(--t-fast);
}
.logo:hover .logo-mark {
  box-shadow: 0 6px 18px rgba(26,86,219,0.45);
}
.logo-text {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--col-text);
  letter-spacing: -0.3px;
  line-height: 1.1;
}
.logo-text span {
  display: block;
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--col-text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* — Main Nav — */
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}
.nav-link {
  padding: 7px 12px;
  border-radius: var(--r-sm);
  font-size: 0.855rem;
  font-weight: 500;
  color: var(--col-text-2);
  transition: all var(--t-fast);
  white-space: nowrap;
}
.nav-link:hover {
  background: var(--col-surface2);
  color: var(--col-text);
}
.nav-link.active {
  background: var(--col-primary-lt);
  color: var(--col-primary);
  font-weight: 600;
}

/* — Header Actions group — */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-left: auto;
}

/* — Search — */
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute;
  left: 11px;
  color: var(--col-text-3);
  pointer-events: none;
  width: 15px; height: 15px;
}
.search-input {
  height: 38px;
  padding: 0 16px 0 34px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-pill);
  background: var(--col-surface2);
  color: var(--col-text);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  width: 190px;
  transition: all var(--t-std);
  outline: none;
}
.search-input:focus {
  width: 250px;
  border-color: var(--col-primary);
  background: var(--col-surface);
  box-shadow: var(--sh-focus);
}
.search-input::placeholder { color: var(--col-text-3); }

/* Search dropdown */
.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 320px;
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--r-md);
  box-shadow: var(--sh-lg);
  display: none;
  z-index: var(--z-modal);
  overflow: hidden;
}
.search-results.open { display: block; }

.search-results-label {
  padding: 10px 16px 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--col-text-3);
}
.search-result-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 0.875rem;
  color: var(--col-text-2);
  transition: background var(--t-fast);
  cursor: pointer;
  text-decoration: none;
}
.search-result-item:hover {
  background: var(--col-surface2);
  color: var(--col-text);
}
.search-result-icon {
  width: 28px; height: 28px;
  border-radius: 7px;
  background: var(--col-surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.search-result-cat {
  font-size: 0.72rem;
  color: var(--col-text-3);
}
.search-no-results {
  padding: 16px;
  font-size: 0.85rem;
  color: var(--col-text-3);
  text-align: center;
}

/* — Theme Button — */
.btn-theme {
  width: 38px; height: 38px;
  border-radius: var(--r-sm);
  border: 1.5px solid var(--col-border);
  background: var(--col-surface);
  color: var(--col-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--t-fast);
  flex-shrink: 0;
  cursor: pointer;
}
.btn-theme:hover { background: var(--col-surface2); }

/* — Language Pill — */
.lang-pill {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 38px;
  padding: 0 12px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-sm);
  background: var(--col-surface);
  color: var(--col-text-2);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all var(--t-fast);
  cursor: pointer;
  white-space: nowrap;
}
.lang-pill:hover {
  border-color: var(--col-primary);
  color: var(--col-primary);
}

/* — Mobile Menu Button — */
.btn-menu {
  display: none;
  width: 38px; height: 38px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-sm);
  background: var(--col-surface);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.btn-menu span {
  display: block;
  width: 18px; height: 2px;
  background: var(--col-text-2);
  border-radius: 2px;
  transition: all var(--t-std);
}


/* ================================================================
   6. MOBILE NAV OVERLAY
   ================================================================ */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(8,15,30,0.6);
  backdrop-filter: blur(4px);
}
.mobile-nav.open { display: block; }

.mobile-nav-panel {
  position: absolute;
  top: 0; right: 0;
  width: min(320px, 90vw);
  height: 100%;
  background: var(--col-surface);
  padding: 24px;
  overflow-y: auto;
  box-shadow: var(--sh-xl);
}
.mobile-nav-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  background: var(--col-surface2);
  border: none;
  border-radius: 50%;
  font-size: 1.1rem;
  color: var(--col-text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--t-fast);
}
.mobile-nav-close:hover { background: var(--col-border); }

.mobile-nav-links { margin-top: 40px; }
.mobile-nav-links a {
  display: block;
  padding: 13px 4px;
  border-bottom: 1px solid var(--col-border);
  font-size: 1rem;
  font-weight: 500;
  color: var(--col-text-2);
  transition: color var(--t-fast);
}
.mobile-nav-links a:hover { color: var(--col-primary); }


/* ================================================================
   7. BREADCRUMB
   ================================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 14px 0;
  font-size: 0.8rem;
  color: var(--col-text-3);
}
.breadcrumb a {
  color: var(--col-text-3);
  transition: color var(--t-fast);
}
.breadcrumb a:hover { color: var(--col-primary); }
.breadcrumb-sep { opacity: 0.5; }
.breadcrumb-current { color: var(--col-text-2); font-weight: 500; }


/* ================================================================
   8. AD SLOTS
   ================================================================ */
.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--col-surface);
  border: 1.5px dashed var(--col-border);
  border-radius: var(--r-md);
  color: var(--col-text-3);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  overflow: hidden;
  transition: border-color var(--t-fast);
}
.ad-slot:hover { border-color: var(--col-border-dk); }

/* Sizes */
.ad-leaderboard  { height: 90px;  width: 100%; margin: 20px 0; }
.ad-rectangle    { height: 250px; width: 100%; margin: 16px 0; }
.ad-banner       { height: 60px;  width: 100%; margin: 14px 0; }
.ad-square       { height: 250px; max-width: 300px; margin: 16px 0; }
.ad-sidebar      { height: 600px; width: 100%; margin: 16px 0; }

/* Midroll: shown between tool card and result */
.ad-midroll {
  height: 90px;
  width: 100%;
  margin: 18px 0;
}


/* ================================================================
   9. CARD COMPONENT
   ================================================================ */
.card {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--r-md);
  box-shadow: var(--sh-xs);
  overflow: hidden;
  transition: box-shadow var(--t-std), border-color var(--t-std);
}
.card:hover { box-shadow: var(--sh-sm); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: 16px 20px;
  border-bottom: 1px solid var(--col-border);
}
.card-header-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--col-text);
}
.card-header-title svg {
  width: 15px; height: 15px;
  color: var(--col-primary);
  flex-shrink: 0;
}

.card-body { padding: 20px; }
.card-body-sm { padding: 14px 18px; }
.card-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--col-border);
  background: var(--col-surface2);
}


/* ================================================================
   10. FORM ELEMENTS
   ================================================================ */

/* Form group wrapper */
.form-group { margin-bottom: 18px; }
.form-group:last-child { margin-bottom: 0; }

/* Label */
.form-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--col-text);
  margin-bottom: 6px;
}

/* Hint text below input */
.form-hint {
  display: block;
  font-size: 0.76rem;
  color: var(--col-text-3);
  margin-top: 4px;
  line-height: 1.5;
}

/* Error message */
.form-error {
  display: none;
  font-size: 0.76rem;
  color: var(--col-red);
  margin-top: 4px;
  font-weight: 500;
}
.form-error.visible { display: block; }

/* Input with unit suffix */
.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.input-unit {
  position: absolute;
  right: 12px;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--col-text-3);
  pointer-events: none;
  white-space: nowrap;
}

/* Text input */
.form-input {
  width: 100%;
  padding: 10px 44px 10px 13px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-sm);
  background: var(--col-surface2);
  color: var(--col-text);
  font-family: var(--font-ui);
  font-size: 0.94rem;
  outline: none;
  transition: border-color var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
  appearance: none;
}
.form-input:focus {
  border-color: var(--col-primary);
  background: var(--col-surface);
  box-shadow: var(--sh-focus);
}
.form-input.has-error {
  border-color: var(--col-red);
}
.form-input.has-error:focus {
  box-shadow: 0 0 0 3px rgba(220,38,38,0.15);
}
.form-input::placeholder { color: var(--col-text-3); }

/* Input without unit suffix */
.form-input-bare {
  padding-right: 13px;
}

/* Select */
.form-select {
  width: 100%;
  padding: 10px 36px 10px 13px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-sm);
  background: var(--col-surface2);
  color: var(--col-text);
  font-family: var(--font-ui);
  font-size: 0.94rem;
  outline: none;
  cursor: pointer;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a93b0' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}
.form-select:focus {
  border-color: var(--col-primary);
  box-shadow: var(--sh-focus);
}

/* Textarea */
.form-textarea {
  width: 100%;
  padding: 10px 13px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-sm);
  background: var(--col-surface2);
  color: var(--col-text);
  font-family: var(--font-ui);
  font-size: 0.94rem;
  outline: none;
  resize: vertical;
  min-height: 80px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.form-textarea:focus {
  border-color: var(--col-primary);
  box-shadow: var(--sh-focus);
}

/* Side-by-side input row */
.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.input-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

/* Radio / Checkbox group */
.radio-group, .check-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.radio-item, .check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-sm);
  background: var(--col-surface2);
  cursor: pointer;
  transition: all var(--t-fast);
}
.radio-item:hover, .check-item:hover {
  border-color: var(--col-primary);
  background: var(--col-primary-lt);
}
.radio-item.selected, .check-item.selected {
  border-color: var(--col-primary);
  background: var(--col-primary-lt);
}
.radio-item input, .check-item input {
  margin-top: 2px;
  accent-color: var(--col-primary);
  flex-shrink: 0;
}
.radio-label-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--col-text);
}
.radio-label-sub {
  font-size: 0.76rem;
  color: var(--col-text-3);
  margin-top: 1px;
}

/* Score row (for clinical scoring tools) */
.score-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border: 1.5px solid var(--col-border);
  border-radius: var(--r-sm);
  background: var(--col-surface);
  margin-bottom: 8px;
  transition: all var(--t-fast);
  cursor: pointer;
}
.score-row:hover {
  border-color: var(--col-primary);
  background: var(--col-primary-lt);
}
.score-row.checked {
  border-color: var(--col-primary);
  background: var(--col-primary-lt);
}
.score-row-label {
  font-size: 0.875rem;
  color: var(--col-text);
  flex: 1;
}
.score-row-points {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--col-primary);
  white-space: nowrap;
}


/* ================================================================
   11. UNIT TOGGLE (Metric / Imperial)
   ================================================================ */
.unit-toggle {
  display: inline-flex;
  background: var(--col-surface2);
  border-radius: var(--r-sm);
  padding: 3px;
  gap: 2px;
}
.unit-btn {
  padding: 6px 16px;
  border-radius: 6px;
  border: none;
  background: transparent;
  font-family: var(--font-ui);
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--col-text-3);
  cursor: pointer;
  transition: all var(--t-fast);
}
.unit-btn:hover:not(.active) { color: var(--col-text); }
.unit-btn.active {
  background: var(--col-surface);
  color: var(--col-primary);
  box-shadow: var(--sh-xs);
}


/* ================================================================
   12. BUTTONS
   ================================================================ */

/* Base button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: var(--r-sm);
  border: none;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--t-std);
  text-decoration: none;
  line-height: 1;
}
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.btn:focus-visible {
  outline: 2px solid var(--col-primary);
  outline-offset: 3px;
}

/* Variants */
.btn-primary {
  background: var(--col-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(26,86,219,0.30);
}
.btn-primary:hover {
  background: var(--col-primary-dk);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(26,86,219,0.40);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--col-surface2);
  color: var(--col-text-2);
  border: 1.5px solid var(--col-border);
}
.btn-secondary:hover {
  background: var(--col-surface3);
  color: var(--col-text);
  border-color: var(--col-border-dk);
}

.btn-outline {
  background: transparent;
  color: var(--col-primary);
  border: 1.5px solid var(--col-primary);
}
.btn-outline:hover { background: var(--col-primary-lt); }

.btn-ghost {
  background: transparent;
  color: var(--col-text-2);
}
.btn-ghost:hover { background: var(--col-surface2); color: var(--col-text); }

.btn-danger {
  background: var(--col-red);
  color: #fff;
}
.btn-danger:hover { background: #b91c1c; }

/* Sizes */
.btn-sm  { padding: 7px 14px; font-size: 0.82rem; }
.btn-sm svg { width: 14px; height: 14px; }
.btn-lg  { padding: 13px 28px; font-size: 0.98rem; }
.btn-full { width: 100%; }

/* Loading state */
.btn .btn-spinner {
  width: 15px; height: 15px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  display: none;
  flex-shrink: 0;
}
.btn.loading .btn-spinner { display: block; }
.btn.loading .btn-label { opacity: 0.6; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Action row — buttons side by side */
.btn-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: var(--sp-4);
}


/* ================================================================
   13. EXPORT BUTTONS (PDF / CSV / Print)
   ================================================================ */
.export-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.export-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: var(--r-sm);
  border: 1.5px solid var(--col-border);
  background: var(--col-surface);
  color: var(--col-text-3);
  font-family: var(--font-ui);
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t-fast);
}
.export-btn svg { width: 12px; height: 12px; }
.export-btn:hover {
  border-color: var(--col-primary);
  color: var(--col-primary);
  background: var(--col-primary-lt);
}


/* ================================================================
   14. RESULT PANEL
   ================================================================ */
.result-panel {
  display: none;
  margin-top: 20px;
  animation: fadeInUp 0.35s ease both;
}
.result-panel.visible { display: block; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Big score / number display */
.result-score-display {
  text-align: center;
  padding: 28px 20px 16px;
}
.result-score-number {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 600;
  font-style: italic;
  line-height: 1;
  transition: color var(--t-std);
}
.result-score-label {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 6px;
  transition: color var(--t-std);
}
.result-score-sub {
  font-size: 0.82rem;
  color: var(--col-text-3);
  margin-top: 4px;
  line-height: 1.5;
}

/* Progress bar */
.progress-wrap {
  height: 8px;
  background: var(--col-surface2);
  border-radius: var(--r-pill);
  overflow: hidden;
  margin: 10px 0;
}
.progress-bar {
  height: 100%;
  border-radius: var(--r-pill);
  transition: width 0.65s ease, background-color var(--t-std);
}

/* Stats grid (2 or 4 stat boxes) */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}
.stats-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}
.stat-box {
  background: var(--col-surface2);
  border: 1px solid var(--col-border);
  border-radius: var(--r-sm);
  padding: 12px 14px;
}
.stat-box-label {
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--col-text-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.stat-box-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--col-text);
  margin-top: 3px;
}

/* Alert / interpretation box */
.result-alert {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--r-sm);
  border-left: 3px solid;
  margin-top: 14px;
}
.result-alert-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }
.result-alert-title { font-size: 0.875rem; font-weight: 700; margin-bottom: 3px; }
.result-alert-body  { font-size: 0.82rem; line-height: 1.6; }

.result-alert.green {
  background: var(--col-green-lt);
  border-color: var(--col-green);
  color: var(--col-green);
}
.result-alert.amber {
  background: var(--col-amber-lt);
  border-color: var(--col-amber);
  color: var(--col-amber);
}
.result-alert.red {
  background: var(--col-red-lt);
  border-color: var(--col-red);
  color: var(--col-red);
}
.result-alert.blue {
  background: var(--col-blue-lt);
  border-color: var(--col-blue);
  color: var(--col-blue);
}
.result-alert-title, .result-alert-body { color: var(--col-text); }

/* Chart wrapper */
.chart-wrap {
  position: relative;
  height: 200px;
  padding: 10px 0;
}


/* ================================================================
   15. SIDEBAR
   ================================================================ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Related tools list */
.related-list li a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 0;
  border-bottom: 1px solid var(--col-border);
  font-size: 0.87rem;
  color: var(--col-text-2);
  transition: color var(--t-fast);
}
.related-list li:last-child a { border-bottom: none; }
.related-list li a:hover { color: var(--col-primary); }
.related-list li a svg {
  width: 13px; height: 13px;
  flex-shrink: 0;
  color: var(--col-text-3);
}

/* Info chips */
.info-chips {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.info-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--col-surface2);
  border: 1px solid var(--col-border);
  padding: 6px 11px;
  border-radius: var(--r-sm);
  font-size: 0.78rem;
  color: var(--col-text-2);
  font-weight: 500;
}


/* ================================================================
   16. TOOL HERO / PAGE HEADER
   ================================================================ */
.tool-hero {
  padding: 30px 0 18px;
}
.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--col-primary-lt);
  color: var(--col-primary);
  padding: 5px 13px;
  border-radius: var(--r-pill);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 13px;
}
.tool-badge svg { width: 13px; height: 13px; }

.tool-hero h1 {
  margin-bottom: 10px;
}
.tool-hero-desc {
  font-size: 1rem;
  color: var(--col-text-2);
  max-width: 640px;
  line-height: 1.75;
}
.tool-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.tool-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8rem;
  color: var(--col-text-3);
}
.tool-meta-item svg { width: 14px; height: 14px; }


/* ================================================================
   17. DOCUMENTATION / SEO CONTENT SECTION
   ================================================================ */
.doc-section {
  margin-top: 36px;
}
.doc-section h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  margin-bottom: 10px;
  margin-top: 28px;
  color: var(--col-text);
}
.doc-section h2:first-child { margin-top: 0; }
.doc-section h3 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--col-text);
  margin: 20px 0 8px;
}
.doc-section p {
  font-size: 0.9rem;
  color: var(--col-text-2);
  line-height: 1.8;
  margin-bottom: 10px;
}
.doc-section ul, .doc-section ol {
  padding-left: 18px;
  margin: 8px 0 14px;
}
.doc-section ul { list-style: disc; }
.doc-section ol { list-style: decimal; }
.doc-section li {
  font-size: 0.9rem;
  color: var(--col-text-2);
  line-height: 1.8;
  margin-bottom: 4px;
}
.doc-section a {
  color: var(--col-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Reference / data table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 14px 0;
}
.data-table th {
  background: var(--col-surface2);
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
  color: var(--col-text);
  border-bottom: 2px solid var(--col-border);
  font-size: 0.82rem;
}
.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--col-border);
  color: var(--col-text-2);
  background: var(--col-surface);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--col-surface2); }

/* FAQ accordion */
.faq-item {
  border: 1px solid var(--col-border);
  border-radius: var(--r-sm);
  overflow: hidden;
  margin-bottom: 8px;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--col-text);
  background: var(--col-surface);
  transition: background var(--t-fast);
  list-style: none;
  user-select: none;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question:hover { background: var(--col-surface2); }
.faq-icon {
  font-size: 1.2rem;
  color: var(--col-text-3);
  transition: transform var(--t-fast);
  flex-shrink: 0;
}
.faq-item[open] .faq-icon { transform: rotate(45deg); }
.faq-answer {
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--col-text-2);
  line-height: 1.8;
  background: var(--col-surface2);
  border-top: 1px solid var(--col-border);
}

/* Medical disclaimer box */
.disclaimer-box {
  background: var(--col-amber-lt);
  border: 1px solid var(--col-amber);
  border-left: 3px solid var(--col-amber);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  font-size: 0.82rem;
  color: var(--col-text-2);
  line-height: 1.7;
  margin-top: 20px;
}
.disclaimer-box strong { color: var(--col-amber); }


/* ================================================================
   18. CATEGORY PAGE — TOOL CARDS GRID
   ================================================================ */
.tool-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.tool-card-link {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--r-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all var(--t-std);
  text-decoration: none;
  position: relative;
}
.tool-card-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-md);
  border-color: rgba(26,86,219,0.25);
}
.tool-card-icon {
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.tool-card-name {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--col-text);
  line-height: 1.25;
}
.tool-card-desc {
  font-size: 0.81rem;
  color: var(--col-text-2);
  line-height: 1.6;
  flex: 1;
}
.tool-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--col-border);
}
.tool-badge-pop {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--col-green-lt);
  color: var(--col-green);
  padding: 3px 8px;
  border-radius: var(--r-pill);
}
.tool-badge-new {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--col-purple-lt);
  color: var(--col-purple);
  padding: 3px 8px;
  border-radius: var(--r-pill);
}
.tool-use-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--col-primary);
  transition: gap var(--t-fast);
}
.tool-use-link svg { width: 12px; height: 12px; }
.tool-card-link:hover .tool-use-link { gap: 7px; }


/* ================================================================
   19. SECTION / PAGE HEADERS (category pages)
   ================================================================ */
.page-hero {
  padding: 44px 0 32px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 100% 0%, rgba(26,86,219,0.06), transparent 60%);
  pointer-events: none;
}
.page-hero-inner { position: relative; z-index: 1; }

.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.view-all-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--col-primary);
  white-space: nowrap;
  padding: 8px 16px;
  border: 1.5px solid rgba(26,86,219,0.25);
  border-radius: var(--r-pill);
  transition: all var(--t-fast);
}
.view-all-link:hover {
  background: var(--col-primary-lt);
  border-color: var(--col-primary);
}
.view-all-link svg { width: 13px; height: 13px; }


/* ================================================================
   20. TOAST NOTIFICATION
   ================================================================ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(70px);
  background: var(--col-text);
  color: var(--col-surface);
  padding: 10px 22px;
  border-radius: var(--r-pill);
  font-size: 0.84rem;
  font-weight: 500;
  box-shadow: var(--sh-lg);
  transition: transform 0.3s ease;
  z-index: var(--z-toast);
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }


/* ================================================================
   21. SCROLL TO TOP BUTTON
   ================================================================ */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: var(--z-sticky);
  width: 44px; height: 44px;
  background: var(--col-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  box-shadow: var(--sh-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition: all var(--t-std);
  pointer-events: none;
}
.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.scroll-top:hover {
  background: var(--col-primary-dk);
  transform: translateY(-2px);
}
.scroll-top svg { width: 18px; height: 18px; }


/* ================================================================
   22. LANGUAGE MODAL
   ================================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(8,15,30,0.65);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-overlay.open { display: flex; }

.modal-box {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--r-xl);
  width: 100%;
  max-width: 560px;
  padding: 28px;
  box-shadow: var(--sh-xl);
  animation: fadeInUp 0.28s ease;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--col-text);
}
.modal-close {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--col-surface2);
  border: none;
  color: var(--col-text-2);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--t-fast);
}
.modal-close:hover { background: var(--col-border); }

.lang-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
  max-height: 380px;
  overflow-y: auto;
}
.lang-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 11px;
  border-radius: var(--r-sm);
  border: 1.5px solid var(--col-border);
  background: var(--col-surface2);
  color: var(--col-text-2);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t-fast);
  text-align: left;
}
.lang-btn:hover, .lang-btn.active {
  border-color: var(--col-primary);
  background: var(--col-primary-lt);
  color: var(--col-primary);
}
.lang-flag { font-size: 1rem; }


/* ================================================================
   23. FOOTER
   ================================================================ */
.site-footer {
  background: var(--col-text);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
  margin-top: 72px;
}
[data-theme="dark"] .site-footer {
  background: var(--col-surface);
  border-top: 1px solid var(--col-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 260px 1fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
[data-theme="dark"] .footer-grid {
  border-bottom-color: var(--col-border);
}

/* Brand column */
.footer-brand .logo-mark {
  background: rgba(255,255,255,0.15);
  box-shadow: none;
}
.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-text span { color: rgba(255,255,255,0.38); }
.footer-brand-desc {
  margin-top: 14px;
  font-size: 0.84rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.48);
}
.footer-social {
  display: flex;
  gap: 7px;
  margin-top: 18px;
}
.social-btn {
  width: 33px; height: 33px;
  border-radius: 8px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.55);
  font-size: 0.85rem;
  transition: all var(--t-fast);
  text-decoration: none;
  cursor: pointer;
}
.social-btn:hover {
  background: var(--col-primary);
  border-color: var(--col-primary);
  color: #fff;
}

/* Link columns */
.footer-col h4 {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: rgba(255,255,255,0.88);
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 9px; }
.footer-col ul li a {
  font-size: 0.84rem;
  color: rgba(255,255,255,0.48);
  transition: color var(--t-fast);
}
.footer-col ul li a:hover { color: rgba(255,255,255,0.9); }

/* Disclaimer */
.footer-disclaimer {
  background: rgba(255,255,255,0.04);
  border-radius: var(--r-sm);
  padding: 14px 20px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.33);
  line-height: 1.7;
  margin-bottom: 24px;
}
.footer-disclaimer strong { color: rgba(255,255,255,0.55); }
[data-theme="dark"] .footer-disclaimer { background: rgba(255,255,255,0.02); }

/* Bottom bar */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 0.78rem; color: rgba(255,255,255,0.3); }
.footer-bottom-links { display: flex; gap: 18px; }
.footer-bottom-links a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  transition: color var(--t-fast);
}
.footer-bottom-links a:hover { color: rgba(255,255,255,0.7); }


/* ================================================================
   24. SCROLL / ENTRY ANIMATION
   ================================================================ */
.animate-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.animate-children > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.animate-children.visible > *:nth-child(1) { opacity:1; transform:none; transition-delay:0.05s; }
.animate-children.visible > *:nth-child(2) { opacity:1; transform:none; transition-delay:0.12s; }
.animate-children.visible > *:nth-child(3) { opacity:1; transform:none; transition-delay:0.19s; }
.animate-children.visible > *:nth-child(4) { opacity:1; transform:none; transition-delay:0.26s; }
.animate-children.visible > *:nth-child(5) { opacity:1; transform:none; transition-delay:0.33s; }
.animate-children.visible > *:nth-child(6) { opacity:1; transform:none; transition-delay:0.40s; }
.animate-children.visible > *:nth-child(7) { opacity:1; transform:none; transition-delay:0.47s; }
.animate-children.visible > *:nth-child(8) { opacity:1; transform:none; transition-delay:0.54s; }


/* ================================================================
   25. RESPONSIVE BREAKPOINTS
   ================================================================ */

/* Tablet: ≤ 1100px */
@media (max-width: 1100px) {
  .layout-tool   { grid-template-columns: 1fr; }
  .layout-4col   { grid-template-columns: repeat(2, 1fr); }
  .tool-cards-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid   { grid-template-columns: 1fr 1fr 1fr; }
  .stats-grid-4  { grid-template-columns: repeat(2, 1fr); }
}

/* Small tablet: ≤ 900px */
@media (max-width: 900px) {
  .main-nav      { display: none; }
  .search-wrap   { display: none; }
  .btn-menu      { display: flex; }
  .layout-3col   { grid-template-columns: repeat(2, 1fr); }
  .lang-pill span:last-child { display: none; } /* hide lang name, keep flag */
}

/* Mobile: ≤ 640px */
@media (max-width: 640px) {
  .container     { padding: 0 16px; }
  .layout-2col   { grid-template-columns: 1fr; }
  .layout-3col   { grid-template-columns: 1fr; }
  .layout-4col   { grid-template-columns: 1fr; }
  .tool-cards-grid { grid-template-columns: 1fr; }
  .input-row     { grid-template-columns: 1fr; }
  .input-row-3   { grid-template-columns: 1fr; }
  .stats-grid    { grid-template-columns: 1fr; }
  .stats-grid-4  { grid-template-columns: repeat(2, 1fr); }
  .footer-grid   { grid-template-columns: 1fr; gap: 28px; }
  .lang-grid     { grid-template-columns: repeat(2, 1fr); }
  .result-score-number { font-size: 3rem; }
  .section       { padding: var(--sp-10) 0; }
  .ad-leaderboard { height: 60px; }
  .tool-hero     { padding: 20px 0 14px; }
}

/* ================================================================
   26. PRINT STYLES
   ================================================================ */
@media print {
  .site-header,
  .site-footer,
  .sidebar,
  .ad-slot,
  .btn-row,
  .export-row,
  .scroll-top,
  .toast,
  .mobile-nav,
  .modal-overlay {
    display: none !important;
  }
  .layout-tool {
    grid-template-columns: 1fr !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
  }
  .card {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }
}

/* ================================================================
   END OF shared.css
   ================================================================ */