:root {
  --brand-orange: #FF6B35;
  --brand-orange-dark: #e85d26;
  --brand-navy: #1A1A2E;
  --brand-blue: #16213E;
  --text-primary: #333333;
  --text-secondary: #666666;
  --bg-white: #FFFFFF;
  --bg-light: #F8F9FA;
  --border: #E5E7EB;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --input-border: #D1D5DB;
  --input-focus: #FF6B35;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'DM Sans', -apple-system, sans-serif; font-size: 16px; line-height: 1.7; color: var(--text-primary); background: transparent; padding: 0; }

/* ===== MOBILE-SAFE CONTRACT — DO NOT REMOVE ===== */
html, body {
  max-width: 100%;
  overflow-x: hidden;
}

.calc-wrapper {
  width: min(720px, 100%);
  max-width: 100%;
  margin: 0 auto;
  padding: 24px;
}

.calc-wrapper * {
  min-width: 0;
}

input, select, textarea, button {
  max-width: 100%;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.action-row > * {
  flex: 1 1 220px;
  min-width: 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.calc-table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 16px; min-width: 560px; }
.calc-table th { background: var(--brand-navy); color: white; padding: 10px 12px; text-align: left; font-weight: 600; }
.calc-table td { padding: 9px 12px; border-bottom: 1px solid var(--border); }
.calc-table tr:nth-child(even) td { background: var(--bg-light); }

pre, code, textarea, .output-box, .token-output {
  max-width: 100%;
  overflow-x: auto;
}

canvas, svg, img {
  max-width: 100%;
  height: auto;
}

.tab-bar {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 20px;
  background: var(--bg-light);
  padding: 4px;
  border-radius: 10px;
}

.tab-btn {
  flex: 0 0 auto;
  white-space: nowrap;
  min-height: 44px;
  padding: 8px 12px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-secondary);
  font-family: inherit;
}

.tab-btn.active {
  background: white;
  color: var(--brand-orange);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.result-big {
  font-size: clamp(28px, 8vw, 48px);
  font-weight: 700;
  color: var(--brand-orange);
  line-height: 1.1;
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 600px) {
  .calc-wrapper { padding: 16px; }

  .action-row {
    flex-direction: column;
  }

  .action-row > * {
    width: 100%;
  }

  .calc-btn {
    width: 100%;
    min-height: 44px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}
/* ===== END MOBILE-SAFE CONTRACT ===== */

/* Tool-specific styles */
input[type="number"], input[type="text"], select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--input-border);
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.calc-btn {
  background: var(--brand-orange);
  color: white;
  border: none;
  padding: 12px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  font-family: inherit;
  min-height: 48px;
}
.calc-btn:hover { background: var(--brand-orange-dark); }
.calc-btn:active { transform: scale(0.98); }

.result-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin-top: 20px;
}

.result-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.field-group {
  margin-bottom: 16px;
}

.field-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.field-hint {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.slider-row input[type="range"] {
  flex: 1;
}

.slider-row input[type="number"] {
  width: 90px;
  flex: 0 0 auto;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--brand-orange);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.chart-container {
  position: relative;
  width: 100%;
  max-width: 100%;
  height: 300px;
  margin-top: 20px;
}

.toggle-btn {
  background: none;
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  color: var(--text-secondary);
  font-family: inherit;
  margin-top: 12px;
}
.toggle-btn:hover {
  border-color: var(--brand-orange);
  color: var(--brand-orange);
}

h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--brand-navy);
  margin-bottom: 20px;
}

.synced-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}
.synced-row > .field-group {
  flex: 1;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

/* ===== UX ENHANCEMENT CLASSES (Research-backed — NN/g, Baymard, Material Design) ===== */

/* YMYL Disclaimer — visible ABOVE form, not buried in results */
.ymyl-disclaimer {
  background: #FFFBEB;
  border-left: 4px solid var(--warning);
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 13px;
  line-height: 1.5;
  color: #92400E;
}

/* Result Hero — primary result gets maximum visual weight */
.result-hero {
  text-align: center;
  padding: 24px;
}
.result-hero .result-big {
  font-size: clamp(32px, 10vw, 56px);
}
.result-hero .result-label {
  font-size: 14px;
  margin-bottom: 8px;
}

/* Result Secondary — supporting data, visually quieter */
.result-secondary .result-big {
  font-size: 20px;
  color: var(--text-primary);
}

/* Date/Time inputs — fix tiny native controls (was the #1 UX complaint) */
input[type="date"],
input[type="time"] {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--input-border);
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
  min-height: 48px;
  transition: border-color 0.2s;
  box-sizing: border-box;
  color: var(--text-primary);
  background: white;
}
input[type="date"]:focus,
input[type="time"]:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

/* Standardized textarea (replaces per-tool inline styles) */
textarea {
  width: 100%;
  padding: 12px;
  border: 1.5px solid var(--input-border);
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
  line-height: 1.6;
  transition: border-color 0.2s;
  box-sizing: border-box;
  resize: vertical;
  min-height: 120px;
}
textarea:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}
textarea.monospace {
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.5;
}

/* Field hint — contextual help below inputs */
.field-hint {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
  line-height: 1.4;
}

/* Live calculation indicator (replaces button on auto-calc tools) */
.live-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--success);
  font-weight: 500;
  margin: 16px 0;
}
.live-indicator::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
}
/* ---- Respect prefers-reduced-motion: strip all animations + smooth
   transitions for users who've opted out at the OS level. Zero bytes
   to anyone who hasn't. ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Keyboard focus: visible outlines only for keyboard users (not for
   mouse clicks). Uses :focus-visible (supported in all browsers since 2022). ---- */
:focus { outline: none; }
:focus-visible {
  outline: 3px solid var(--input-focus);
  outline-offset: 2px;
  border-radius: 4px;
}
.calc-btn:focus-visible { outline-offset: 3px; }

/* ---- Print stylesheet: clean results for paper/PDF. Hide buttons, show
   full-width content, use standard black text. ---- */
@media print {
  body { background: white !important; color: black !important; font-size: 12pt; }
  .calc-btn, .toggle-btn, button { display: none !important; }
  .calc-wrapper { padding: 0; max-width: 100%; }
  .result-card, .result-big, .result-hero {
    background: transparent !important;
    color: black !important;
    page-break-inside: avoid;
  }
  a { color: black !important; text-decoration: underline; }
  .data-stamp { border: 1px solid #999; page-break-inside: avoid; }
  input, select, textarea {
    border: 1px solid #999 !important;
    background: white !important;
    color: black !important;
  }
}

/* ===== END UNIVERSAL QoL UPGRADES ===== */

/* CALCMOJO_MOBILE_FIX:v1_action_row — fixes 220px mobile height gap */
@media (max-width: 768px) {
  .action-row.action-row > * { flex-basis: auto; }
}

/* CALCMOJO_FIX:v2_hero_span — result-hero spans full grid row (prevents overflow) */
.results-grid .result-hero {
  grid-column: 1 / -1;
}

/* CALCMOJO_FIX:v2_1_hero_span_correct — targets the CARD containing result-hero */
.results-grid > .result-card:has(.result-hero) {
  grid-column: 1 / -1;
}

/* CALCMOJO_DARKMODE_REMOVED:v2 */

/* CALCMOJO_FIX:v3_output_overflow */
.result-card *, .results-grid *, .output-box *, .token-output *, .calc-output * {
  max-width: 100%;
}
.result-card canvas, .result-card svg, .result-card img,
.results-grid canvas, .results-grid svg, .results-grid img,
.output-box canvas, .output-box svg, .output-box img,
.calc-output canvas, .calc-output svg, .calc-output img {
  height: auto;
  display: block;
  margin: 0 auto;
}
.result-card pre, .results-grid pre, .output-box pre, .token-output pre {
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.result-card table, .results-grid table {
  max-width: 100%;
  overflow-x: auto;
  display: block;
}