/* ============================================================
   MyToolKit — Design System & Base Styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;700;800&family=Inter:wght@400;500&display=swap');

/* ── Light mode tokens ── */
:root {
  --bg: #F9F8FF;
  --bg-card: #FFFFFF;
  --fg: #0F0E1A;
  --fg-2: #4B4966;
  --fg-3: #9896B0;
  --border: #E8E6F4;
  --p: #7C3AED;
  --p-l: #EDE9FE;
  --p-d: #5B21B6;
  --shadow: 0 1px 4px rgba(124,58,237,.08), 0 4px 16px rgba(124,58,237,.06);
  --shadow-hover: 0 4px 12px rgba(124,58,237,.14), 0 8px 32px rgba(124,58,237,.1);
  --r-card: 14px;
  --r-input: 10px;
  --r-btn: 12px;
  --nav-h: 60px;

  /* Category colours */
  --math-fg: #7C3AED; --math-bg: #EDE9FE;
  --finance-fg: #059669; --finance-bg: #D1FAE5;
  --health-fg: #DB2777; --health-bg: #FCE7F3;
  --date-fg: #D97706; --date-bg: #FEF3C7;
  --text-fg: #2563EB; --text-bg: #DBEAFE;
  --convert-fg: #0891B2; --convert-bg: #CFFAFE;
  --random-fg: #7C2D12; --random-bg: #FED7AA;
  --image-fg: #BE185D; --image-bg: #FCE7F3;
  --pdf-fg: #DC2626; --pdf-bg: #FEE2E2;
  --social-fg: #0284C7; --social-bg: #E0F2FE;
}

/* ── Dark mode tokens ── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0D0C18;
    --bg-card: #16152A;
    --fg: #F0EEFF;
    --fg-2: #9896B0;
    --fg-3: #5C5A74;
    --border: #252340;
    --p-l: #2D1F5E;
    --shadow: 0 1px 4px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.2);
    --shadow-hover: 0 4px 12px rgba(124,58,237,.25), 0 8px 32px rgba(124,58,237,.15);
  }
}
:root[data-theme="dark"] {
  --bg: #0D0C18;
  --bg-card: #16152A;
  --fg: #F0EEFF;
  --fg-2: #9896B0;
  --fg-3: #5C5A74;
  --border: #252340;
  --p-l: #2D1F5E;
  --shadow: 0 1px 4px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.2);
  --shadow-hover: 0 4px 12px rgba(124,58,237,.25), 0 8px 32px rgba(124,58,237,.15);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
h1,h2,h3,h4,h5,h6 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}
a { color: var(--p); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
button { cursor: pointer; font-family: 'Inter', sans-serif; }

/* ── Layout ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
main { flex: 1; padding-top: var(--nav-h); }

/* ── Sticky Nav ── */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  backdrop-filter: blur(8px);
}
.site-nav .container {
  display: flex; align-items: center; gap: 16px; width: 100%;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  flex-shrink: 0; text-decoration: none;
}
.nav-logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, #7C3AED, #5B21B6);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; line-height: 1;
}
.nav-logo-text {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800; font-size: 18px;
}
.nav-logo-text span { color: var(--p); }
.nav-search {
  flex: 1; max-width: 480px;
  position: relative;
}
.nav-search input {
  width: 100%;
  padding: 8px 16px 8px 40px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-btn);
  background: var(--bg);
  color: var(--fg);
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color .15s;
}
.nav-search input:focus { border-color: var(--p); }
.nav-search input::placeholder { color: var(--fg-3); }
.nav-search .search-icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--fg-3); font-size: 16px; pointer-events: none;
}
.nav-count {
  flex-shrink: 0;
  font-size: 13px; font-weight: 500; color: var(--fg-2);
  white-space: nowrap;
}
.nav-theme-btn {
  flex-shrink: 0;
  background: none; border: 1.5px solid var(--border);
  border-radius: 8px; padding: 6px 8px;
  color: var(--fg-2); font-size: 16px;
  transition: border-color .15s, color .15s;
}
.nav-theme-btn:hover { border-color: var(--p); color: var(--p); }

/* ── Footer ── */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 24px 0;
  margin-top: 48px;
}
.site-footer .container {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 12px;
}
.footer-brand {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700; font-size: 15px;
}
.footer-brand span { color: var(--p); }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links a { font-size: 13px; color: var(--fg-2); }
.footer-links a:hover { color: var(--p); text-decoration: none; }
.footer-copy { font-size: 12px; color: var(--fg-3); width: 100%; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 10px 20px;
  border-radius: var(--r-btn); border: none;
  font-size: 14px; font-weight: 500;
  transition: all .15s;
  text-decoration: none;
}
.btn-primary {
  background: var(--p); color: #fff;
}
.btn-primary:hover { background: var(--p-d); text-decoration: none; }
.btn-secondary {
  background: var(--p-l); color: var(--p);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { border-color: var(--p); text-decoration: none; }
.btn-outline {
  background: transparent; color: var(--p);
  border: 1.5px solid var(--p);
}
.btn-outline:hover { background: var(--p-l); text-decoration: none; }
.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: 14px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn:active { transform: scale(.97); }

/* ── Inputs ── */
.input, .select, .textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-input);
  background: var(--bg);
  color: var(--fg);
  font-size: 15px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color .15s;
}
.input:focus, .select:focus, .textarea:focus { border-color: var(--p); }
.input::placeholder, .textarea::placeholder { color: var(--fg-3); }
.textarea { resize: vertical; min-height: 120px; line-height: 1.6; }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239896B0' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
label { display: block; font-size: 13px; font-weight: 500; color: var(--fg-2); margin-bottom: 6px; }
.form-group { margin-bottom: 16px; }

/* ── Range Slider ── */
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px;
  border-radius: 3px; background: var(--border);
  outline: none; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--p);
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--p-l);
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--r-card);
  padding: 20px;
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--p);
}

/* ── Tool Page Layout ── */
.tool-page { padding: 24px 0 48px; }
.tool-header { margin-bottom: 24px; }
.tool-breadcrumb {
  font-size: 13px; color: var(--fg-3); margin-bottom: 8px;
  display: flex; align-items: center; gap: 6px;
}
.tool-breadcrumb a { color: var(--fg-3); }
.tool-breadcrumb a:hover { color: var(--p); text-decoration: none; }
.tool-title-row { display: flex; align-items: center; gap: 14px; margin-bottom: 6px; }
.tool-icon-box {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; flex-shrink: 0; background: var(--p-l);
}
.icon-math    { background: var(--math-bg);    color: var(--math-fg); }
.icon-finance { background: var(--finance-bg); color: var(--finance-fg); }
.icon-health  { background: var(--health-bg);  color: var(--health-fg); }
.icon-date    { background: var(--date-bg);    color: var(--date-fg); }
.icon-text    { background: var(--text-bg);    color: var(--text-fg); }
.icon-convert { background: var(--convert-bg); color: var(--convert-fg); }
.icon-random  { background: var(--random-bg);  color: var(--random-fg); }
.icon-image   { background: var(--image-bg);   color: var(--image-fg); }
.icon-pdf     { background: var(--pdf-bg);     color: var(--pdf-fg); }
.icon-social  { background: var(--social-bg);  color: var(--social-fg); }
.tool-title { font-size: 26px; font-weight: 800; }
.tool-desc { color: var(--fg-2); font-size: 15px; }
.tool-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px; align-items: start;
}
.tool-main { display: flex; flex-direction: column; gap: 20px; }
.tool-sidebar { display: flex; flex-direction: column; gap: 20px; }
.result-box {
  background: var(--p-l);
  border: 1.5px solid var(--border);
  border-radius: var(--r-card);
  padding: 20px;
}
.result-label { font-size: 12px; font-weight: 500; color: var(--p); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 8px; }
.result-value { font-size: 32px; font-weight: 800; font-family: 'Plus Jakarta Sans', sans-serif; color: var(--fg); }
.result-sub { font-size: 14px; color: var(--fg-2); margin-top: 4px; }

/* ── AdSense Placeholders ── */
.adsense-placeholder {
  background: var(--bg-card);
  border: 1.5px dashed var(--border);
  border-radius: var(--r-card);
  display: flex; align-items: center; justify-content: center;
  color: var(--fg-3); font-size: 12px;
  text-align: center; padding: 8px;
}
.adsense-top { width: 100%; min-height: 90px; margin-bottom: 20px; }
.adsense-sidebar { width: 100%; min-height: 250px; }
.adsense-bottom { width: 100%; min-height: 280px; margin-top: 20px; }

/* ── Category Badges ── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .04em;
}
.badge-math { background: var(--math-bg); color: var(--math-fg); }
.badge-finance { background: var(--finance-bg); color: var(--finance-fg); }
.badge-health { background: var(--health-bg); color: var(--health-fg); }
.badge-date { background: var(--date-bg); color: var(--date-fg); }
.badge-text { background: var(--text-bg); color: var(--text-fg); }
.badge-convert { background: var(--convert-bg); color: var(--convert-fg); }
.badge-random { background: var(--random-bg); color: var(--random-fg); }
.badge-image { background: var(--image-bg); color: var(--image-fg); }
.badge-pdf { background: var(--pdf-bg); color: var(--pdf-fg); }
.badge-social { background: var(--social-bg); color: var(--social-fg); }

.badge-popular {
  background: #FEF3C7; color: #D97706;
}

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: var(--r-card); border: 1.5px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
th { background: var(--p-l); color: var(--p); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; padding: 10px 14px; text-align: left; }
td { padding: 10px 14px; border-top: 1px solid var(--border); font-size: 14px; }
tr:hover td { background: var(--p-l); }

/* ── Utility Classes ── */
.text-center { text-align: center; }
.text-sm { font-size: 13px; }
.text-muted { color: var(--fg-3); }
.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }

/* ── Copy Button ── */
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 8px;
  background: var(--p-l); color: var(--p); border: none;
  font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .15s;
}
.copy-btn:hover { background: var(--p); color: #fff; }
.copy-btn.copied { background: #D1FAE5; color: #059669; }

/* ── Strength Meter ── */
.strength-bar {
  height: 6px; border-radius: 3px;
  background: var(--border); overflow: hidden;
  margin-top: 8px;
}
.strength-fill {
  height: 100%; border-radius: 3px;
  transition: width .3s, background .3s;
}

/* ── Tabs ── */
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 16px; }
.tab-btn {
  padding: 8px 16px; border-radius: 8px; border: 1.5px solid var(--border);
  background: var(--bg-card); color: var(--fg-2);
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all .15s;
}
.tab-btn.active, .tab-btn:hover {
  background: var(--p-l); color: var(--p); border-color: var(--p);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Spinner / Loader ── */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--p);
  border-radius: 50%;
  animation: spin .6s linear infinite;
  display: inline-block;
}

/* ── Toggle Switch ── */
.toggle-wrap { display: flex; align-items: center; gap: 10px; }
.toggle {
  position: relative; width: 44px; height: 24px;
  display: inline-block;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0; cursor: pointer;
  background: var(--border); border-radius: 24px;
  transition: .2s;
}
.toggle-slider:before {
  content: ''; position: absolute;
  width: 18px; height: 18px; left: 3px; bottom: 3px;
  background: #fff; border-radius: 50%;
  transition: .2s;
}
.toggle input:checked + .toggle-slider { background: var(--p); }
.toggle input:checked + .toggle-slider:before { transform: translateX(20px); }

/* ── Mode Toggle Pills ── */
.mode-pills {
  display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px;
}
.mode-pill {
  padding: 7px 16px; border-radius: 20px;
  border: 1.5px solid var(--border);
  background: var(--bg-card); color: var(--fg-2);
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all .15s;
}
.mode-pill.active {
  background: var(--p); color: #fff; border-color: var(--p);
}

/* ── Canvas / Wheel ── */
canvas { max-width: 100%; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .tool-layout {
    grid-template-columns: 1fr;
  }
  .tool-sidebar { order: -1; }
  .adsense-sidebar { min-height: 120px; }
  .nav-count { display: none; }
  .result-value { font-size: 24px; }
}
@media (max-width: 480px) {
  .container { padding: 0 12px; }
  .tool-title { font-size: 20px; }
  .tool-icon-box { width: 40px; height: 40px; font-size: 20px; }
}

/* ── Footer Coffee Link ── */
.footer-coffee-link {
  background: #FFDD00 !important;
  color: #1a1a1a !important;
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 13px;
  text-decoration: none !important;
  transition: opacity .15s;
}
.footer-coffee-link:hover { opacity: 0.85; }

/* ── Support / Donation Page ── */
.support-hero {
  text-align: center;
  padding: 48px 0 32px;
}
.support-hero h1 { font-size: 36px; margin-bottom: 12px; }
.support-hero p { color: var(--fg-2); max-width: 520px; margin: 0 auto; }
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 32px 0;
}
@media (max-width: 768px) { .tier-grid { grid-template-columns: 1fr; } }
.tier-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: center;
  transition: border-color .15s, transform .15s;
  cursor: pointer;
}
.tier-card:hover, .tier-card.featured {
  border-color: var(--p);
  transform: translateY(-3px);
}
.tier-card.featured { background: var(--p-l); }
.tier-emoji { font-size: 40px; margin-bottom: 12px; }
.tier-name { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.tier-price { font-size: 32px; font-weight: 800; color: var(--p); margin-bottom: 8px; }
.tier-desc { font-size: 13px; color: var(--fg-2); margin-bottom: 20px; }
.tier-btn {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  background: var(--p);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: opacity .15s;
}
.tier-btn:hover { opacity: .85; }
.tier-btn:disabled { opacity: .5; cursor: not-allowed; }