/* ============================================================
   Stop Price Calculator — style.css
   Add new page styles below existing sections.
   ============================================================ */

/* ----------------------------------------------------------
   1. Reset & tokens
---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-page:       #f0f0ed;
  --bg-card:       #ffffff;
  --bg-secondary:  #f5f4f0;
  --text-primary:  #1a1a18;
  --text-secondary:#6b6b68;
  --border:        rgba(0,0,0,0.12);
  --border-em:     rgba(0,0,0,0.22);
  --blue:          #378ADD;
  --blue-dark:     #185FA5;
  --blue-darker:   #0C447C;
  --blue-light:    #E6F1FB;
  --green:         #3B6D11;
  --red:           #A32D2D;
  --radius-sm:     6px;
  --radius-md:     8px;
  --radius-lg:     12px;
  --shadow-focus:  0 0 0 3px rgba(55,138,221,0.18);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-page:       #1a1a18;
    --bg-card:       #252523;
    --bg-secondary:  #2e2e2b;
    --text-primary:  #f0efe9;
    --text-secondary:#9b9b96;
    --border:        rgba(255,255,255,0.10);
    --border-em:     rgba(255,255,255,0.20);
    --blue-dark:     #5ba3e8;
    --blue-darker:   #85B7EB;
    --blue-light:    #042C53;
    --green:         #7ab84a;
    --red:           #e07070;
  }
}

/* ----------------------------------------------------------
   2. Base
---------------------------------------------------------- */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1.5rem 1rem 3rem;
  line-height: 1.5;
}

/* ----------------------------------------------------------
   3. Layout
---------------------------------------------------------- */
.app {
  width: 100%;
  max-width: 480px;
}

/* ----------------------------------------------------------
   4. Header
---------------------------------------------------------- */
.header {
  text-align: center;
  margin-bottom: 1.75rem;
  padding-top: 0.5rem;
}

.header h1 {
  font-size: 22px;
  font-weight: 500;
  color: var(--text-primary);
}

.header h1 .ti {
  font-size: 22px;
  vertical-align: -3px;
  margin-right: 6px;
  color: var(--blue);
}

.header p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ----------------------------------------------------------
   5. Card
---------------------------------------------------------- */
.card {
  background: var(--bg-card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

/* ----------------------------------------------------------
   6. Fields & labels
---------------------------------------------------------- */
.field {
  margin-bottom: 1.25rem;
}
.field:last-child {
  margin-bottom: 0;
}

.field label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.field label .ti {
  font-size: 14px;
}

.optional-tag {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 0.5px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  text-transform: none;
  letter-spacing: 0;
  margin-left: 2px;
}

/* ----------------------------------------------------------
   7. Inputs
---------------------------------------------------------- */
.input-wrap {
  position: relative;
}

.input-prefix {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 16px;
  color: var(--text-secondary);
  pointer-events: none;
  user-select: none;
}

input[type="number"] {
  width: 100%;
  height: 54px;
  border: 0.5px solid var(--border-em);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 500;
  font-family: inherit;
  padding: 0 16px 0 36px;
  -webkit-appearance: none;
  -moz-appearance: textfield;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="number"].no-prefix {
  padding-left: 16px;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

input[type="number"]:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: var(--shadow-focus);
}

/* ----------------------------------------------------------
   8. Safeline presets & slider
---------------------------------------------------------- */
.preset-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 1.25rem;
}

.preset-btn {
  height: 50px;
  border: 0.5px solid var(--border-em);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.preset-btn:active {
  transform: scale(0.96);
}

.preset-btn.active {
  background: var(--blue-light);
  border-color: var(--blue);
  color: var(--blue-dark);
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.slider-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.slider-value {
  font-size: 24px;
  font-weight: 500;
  color: var(--blue-dark);
}

input[type="range"] {
  width: 100%;
  height: 4px;
  accent-color: var(--blue);
  cursor: pointer;
}

/* ----------------------------------------------------------
   9. Result card
---------------------------------------------------------- */
.result-card {
  background: var(--bg-card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  pointer-events: none;
}

.result-card.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.result-label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.result-price {
  font-size: 48px;
  font-weight: 500;
  color: var(--blue-dark);
  line-height: 1;
  margin-bottom: 1rem;
  transition: opacity 0.12s;
}

.result-price.updating { opacity: 0.4; }

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.result-stat {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.result-stat--wide {
  grid-column: span 2;
}

.stat-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 3px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-val {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  transition: opacity 0.12s;
}

.stat-val.updating { opacity: 0.4; }
.stat-val.green    { color: var(--green); }
.stat-val.red      { color: var(--red); }

/* ----------------------------------------------------------
   10. Reset button
---------------------------------------------------------- */
.reset-btn {
  width: 100%;
  height: 46px;
  background: transparent;
  color: var(--text-secondary);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 0.12s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.reset-btn:hover  { background: var(--bg-secondary); }
.reset-btn:active { transform: scale(0.98); }

/* ----------------------------------------------------------
   11. Footer
---------------------------------------------------------- */
.footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 12px;
  color: var(--text-secondary);
}

/* ----------------------------------------------------------
   12. Help buttons & drawers
---------------------------------------------------------- */
.result-label-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}
.result-label-row .result-label { margin-bottom: 0; }

.stat-label-row {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 3px;
}
.stat-label-row .stat-label { margin-bottom: 0; }

.help-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 1.5px solid var(--text-secondary);
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 10px;
  font-weight: 600;
  font-family: inherit;
  line-height: 1;
  flex-shrink: 0;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.help-btn:hover,
.help-btn.active {
  border-color: var(--blue);
  color: var(--blue-dark);
  background: var(--blue-light);
}

.help-drawer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.help-drawer.open { max-height: 300px; }

.help-drawer-inner {
  padding: 10px 0 6px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.55;
}

.help-example {
  margin-top: 8px;
  border-left: 2px solid var(--blue);
  padding: 5px 10px;
  font-size: 12.5px;
  line-height: 1.65;
}

.help-eg-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--blue-dark);
  margin-bottom: 3px;
}

/* Copy buttons */
.result-price-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}
.result-price-row .result-price { margin-bottom: 0; }

.stat-val-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.copy-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-em);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 11px;
  font-weight: 500;
  font-family: inherit;
  padding: 4px 9px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  -webkit-tap-highlight-color: transparent;
}
.copy-btn:hover  { background: var(--blue-light); border-color: var(--blue); color: var(--blue-dark); }
.copy-btn.copied { background: var(--blue-light); border-color: var(--blue); color: var(--blue-dark); }

/* ----------------------------------------------------------
   13. SEO blurb
---------------------------------------------------------- */
.seo-blurb {
  background: var(--bg-card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.seo-blurb h2 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.seo-blurb p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.seo-blurb p:last-child { margin-bottom: 0; }

.seo-blurb ul {
  margin: 6px 0 10px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.seo-blurb strong { color: var(--text-primary); }

/* ----------------------------------------------------------
   14. Buy Me a Coffee
---------------------------------------------------------- */
.bmc-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: #FFDD00;
  color: #000000;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  padding: 10px 20px;
  border-radius: 24px;
  margin-bottom: 14px;
  transition: transform 0.12s, box-shadow 0.12s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  -webkit-tap-highlight-color: transparent;
}
.bmc-btn:hover  { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(0,0,0,0.18); }
.bmc-btn:active { transform: scale(0.97); }

/* ----------------------------------------------------------
   14. AdSense ad unit container
---------------------------------------------------------- */
.ad-unit {
  margin: 0 0 1rem;
  min-height: 80px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* ----------------------------------------------------------
   15. Add to Home Screen banner
---------------------------------------------------------- */
.install-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 16px rgba(0,0,0,0.10);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  z-index: 100;
}
.install-banner.show { transform: translateY(0); }

.install-banner-text {
  flex: 1;
  font-size: 13px;
  color: var(--text-primary);
}

.install-action-btn {
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  padding: 7px 16px;
  cursor: pointer;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

.install-dismiss-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 6px;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

/* ----------------------------------------------------------
   16. Responsive — desktop enhancements
---------------------------------------------------------- */
@media (min-width: 600px) {
  body {
    align-items: center;
    padding: 2rem 1rem 4rem;
  }

  .header h1 { font-size: 26px; }
  .result-price { font-size: 56px; }
}