/* ============================================
   IWantFreeQRCode.com -- Design System
   ============================================ */

/* Placeholder clearly muted so users know field is empty */
#urlInput::placeholder,
.url-input::placeholder,
input[type="url"]::placeholder {
  color: #a1a1aa;
  font-style: italic;
}

.input-hint {
  font-size: 12px;
  color: #71717a;
  margin-top: 4px;
}

:root {
  --bg: #ffffff;
  --bg-secondary: #f8fafc;
  --primary: #18181b;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-light: #eef2ff;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --text: #18181b;
  --text-muted: #71717a;
  --border: #e4e4e7;
  --qr-bg: #fafafa;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.07), 0 4px 16px rgba(0,0,0,.05);
  --shadow-hover: 0 4px 12px rgba(99,102,241,.18), 0 8px 28px rgba(0,0,0,.09);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Layout ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 0;
}
.logo { display: flex; align-items: baseline; text-decoration: none; flex-shrink: 0; }
.logo-free { font-size: 1.15rem; font-weight: 700; color: var(--text); }
.logo-name { font-size: 1.15rem; font-weight: 700; color: var(--accent); }
.logo-tld  { font-size: 1rem;   font-weight: 400; color: var(--text-muted); }

.main-nav { display: flex; gap: 24px; margin-left: auto; }
.main-nav a {
  font-size: .88rem; font-weight: 500; color: var(--text);
  text-decoration: none; transition: color .2s; white-space: nowrap;
}
.main-nav a:hover { color: var(--accent); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 4px; margin-left: auto;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); border-radius: 2px;
}

/* ---- Hero ---- */
.hero {
  text-align: center;
  padding: 56px 20px 40px;
  background: linear-gradient(160deg, #eef2ff 0%, #f8fafc 100%);
}
.hero h1 {
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  font-weight: 700; line-height: 1.2;
  color: var(--text); margin-bottom: 18px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 1.1rem; color: var(--text-muted);
  max-width: 580px; margin: 0 auto 28px;
}
.trust-pills {
  display: flex; flex-wrap: wrap;
  justify-content: center; gap: 10px; margin-top: 20px;
}
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 999px; font-size: .83rem; font-weight: 500;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
}

/* ---- Section titles ---- */
.section-title {
  font-size: 1.55rem; font-weight: 700; color: var(--text);
  text-align: center; margin-bottom: 8px;
}
.section-sub {
  text-align: center; color: var(--text-muted);
  margin-bottom: 36px; font-size: .93rem;
}

/* ============================================
   MAIN QR GENERATOR
   ============================================ */

.generator-section { padding: 40px 0 64px; }

.generator-wrapper {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Desktop: two columns */
@media (min-width: 768px) {
  .generator-wrapper {
    flex-direction: row;
    align-items: flex-start;
  }
  .input-panel {
    flex: 0 0 55%;
    max-width: 55%;
  }
  .preview-panel {
    flex: 1;
    position: sticky;
    top: 84px;
  }
}

/* Mobile: preview on top */
@media (max-width: 767px) {
  .preview-panel { order: -1; }
}

/* ---- Type Tabs ---- */
.type-tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.type-tab {
  flex: 1;
  min-width: 60px;
  padding: 8px 10px;
  background: none;
  border: none;
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .18s;
  text-align: center;
  white-space: nowrap;
  font-family: inherit;
}
.type-tab:hover { color: var(--accent); background: var(--accent-light); }
.type-tab.active {
  background: var(--bg);
  color: var(--accent);
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
}
.type-tab .tab-icon { display: block; font-size: 1.1rem; margin-bottom: 3px; }

/* ---- Tab Panes ---- */
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ---- Input styles ---- */
.form-group {
  display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px;
}
.form-group label {
  font-size: .84rem; font-weight: 500; color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .93rem;
  color: var(--text);
  background: var(--bg);
  font-family: inherit;
  transition: border-color .18s, box-shadow .18s;
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}
.form-group textarea { resize: vertical; min-height: 90px; }
.form-group .hint {
  font-size: .78rem; color: var(--text-muted); margin-top: 2px;
}
.char-count {
  font-size: .75rem; color: var(--text-muted); text-align: right; margin-top: 3px;
}
.char-count.warn { color: var(--warning); }

.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

/* Password toggle */
.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 44px; }
.pw-toggle {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer;
  font-size: 1rem; color: var(--text-muted); padding: 4px;
}

/* Checkbox row */
.check-row {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 14px; font-size: .88rem; cursor: pointer;
}
.check-row input[type="checkbox"] {
  width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer;
}

/* ---- Customize Panel ---- */
.customize-section {
  margin-top: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.customize-toggle {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-secondary); border: none;
  font-size: .9rem; font-weight: 600; color: var(--text);
  cursor: pointer; font-family: inherit; gap: 8px;
  transition: background .18s;
}
.customize-toggle:hover { background: #f0f0f3; }
.customize-toggle .chevron { transition: transform .2s; font-size: 1rem; }
.customize-toggle.open .chevron { transform: rotate(180deg); }
.customize-body {
  display: none; padding: 20px 16px;
  border-top: 1px solid var(--border);
}
.customize-body.open { display: block; }

.customize-row { margin-bottom: 18px; }
.customize-row label {
  display: block; font-size: .84rem; font-weight: 500;
  color: var(--text); margin-bottom: 8px;
}
.customize-row .sub-label {
  font-size: .78rem; color: var(--text-muted); margin-left: 6px; font-weight: 400;
}

/* Range sliders */
.range-wrap { display: flex; flex-direction: column; gap: 6px; }
.range-label-row { display: flex; justify-content: space-between; font-size: .84rem; }
.range-label-row .val { font-weight: 600; color: var(--accent); }
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; background: var(--border); border-radius: 999px; outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
  box-shadow: 0 1px 4px rgba(99,102,241,.3);
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); cursor: pointer; border: none;
}

/* Color pickers */
.color-row { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; }
.color-group { display: flex; flex-direction: column; gap: 6px; }
.color-group label { font-size: .8rem; font-weight: 500; color: var(--text-muted); }
.color-group input[type="color"] {
  width: 56px; height: 36px; border: 1.5px solid var(--border);
  border-radius: 6px; cursor: pointer; padding: 2px;
  background: var(--bg);
}
.btn-swap {
  padding: 8px 14px; background: var(--bg-secondary);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: .8rem; font-weight: 500; cursor: pointer;
  color: var(--text-muted); font-family: inherit; transition: all .18s;
  align-self: flex-end;
}
.btn-swap:hover { border-color: var(--accent); color: var(--accent); }

/* Error correction radios */
.ec-options { display: flex; gap: 8px; flex-wrap: wrap; }
.ec-opt {
  flex: 1; min-width: 70px;
  position: relative;
}
.ec-opt input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
.ec-opt label {
  display: flex; flex-direction: column; align-items: center;
  padding: 8px 10px; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); cursor: pointer; font-size: .78rem;
  text-align: center; transition: all .18s; color: var(--text-muted);
  font-weight: 500; line-height: 1.4; gap: 2px;
}
.ec-opt label .ec-level { font-size: 1rem; font-weight: 700; color: var(--text); }
.ec-opt input:checked + label {
  border-color: var(--accent); background: var(--accent-light); color: var(--accent);
}
.ec-opt input:checked + label .ec-level { color: var(--accent); }

/* Logo upload */
.logo-upload-area {
  border: 2px dashed var(--border); border-radius: var(--radius-sm);
  padding: 20px; text-align: center; cursor: pointer;
  transition: border-color .18s, background .18s; position: relative;
  font-size: .85rem; color: var(--text-muted);
}
.logo-upload-area:hover, .logo-upload-area.has-logo {
  border-color: var(--accent); background: var(--accent-light);
}
.logo-upload-area input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.logo-preview-name { font-size: .78rem; color: var(--accent); margin-top: 6px; }

/* ---- QR Preview Panel ---- */
.qr-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow);
}

.qr-preview-wrap {
  background: var(--qr-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 200px;
  min-height: 200px;
  margin: 0 auto 16px;
  position: relative;
}
#qrPreview canvas { display: block !important; }

.qr-empty-state {
  display: flex; flex-direction: column; align-items: center;
  gap: 10px; color: var(--text-muted); font-size: .88rem;
}
.qr-empty-state .empty-icon { font-size: 3rem; opacity: .3; }

.qr-status {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 999px;
  font-size: .8rem; font-weight: 600; margin-bottom: 16px;
}
.qr-status.ready {
  background: #d1fae5; color: #065f46;
}
.qr-status.empty {
  background: #f4f4f5; color: var(--text-muted);
}

/* Download buttons */
.download-row {
  display: flex; gap: 10px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 10px;
}
.btn-download-png {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 11px 22px;
  background: var(--accent); color: #fff;
  border: none; border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: background .18s; font-family: inherit;
}
.btn-download-png:hover { background: var(--accent-hover); }
.btn-download-png:disabled { background: #d1d5db; cursor: not-allowed; }

.btn-download-svg {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 11px 22px;
  background: var(--bg); color: var(--accent);
  border: 1.5px solid var(--accent); border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: all .18s; font-family: inherit;
}
.btn-download-svg:hover { background: var(--accent-light); }
.btn-download-svg:disabled { border-color: #d1d5db; color: #d1d5db; cursor: not-allowed; }

.copy-row {
  display: flex; gap: 8px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 14px;
}
.btn-copy {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  background: var(--bg-secondary); color: var(--text-muted);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: .78rem; font-weight: 500; cursor: pointer;
  transition: all .18s; font-family: inherit;
}
.btn-copy:hover { border-color: var(--accent); color: var(--accent); }
.btn-copy.copied { background: #d1fae5; border-color: var(--success); color: #065f46; }

.qr-stats {
  font-size: .75rem; color: var(--text-muted);
  border-top: 1px solid var(--border); padding-top: 12px;
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}
.qr-stats span { display: flex; align-items: center; gap: 4px; }

/* ---- Sub-generator pages (WiFi, vCard, Batch) ---- */
.page-header {
  padding: 48px 0 32px;
  background: linear-gradient(160deg, #eef2ff 0%, #f8fafc 100%);
  text-align: center;
}
.page-header h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700; margin-bottom: 10px;
}
.page-header p { color: var(--text-muted); font-size: .97rem; }

.generator-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow); margin-bottom: 24px;
}

/* WiFi privacy note */
.privacy-note {
  display: flex; align-items: flex-start; gap: 10px;
  background: #f0fdf4; border: 1px solid #a7f3d0;
  border-radius: var(--radius-sm); padding: 12px 16px;
  font-size: .85rem; color: #065f46; margin-top: 16px;
}

/* Use case cards */
.use-case-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 16px;
  margin: 28px 0;
}
.use-case-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px;
  text-align: center;
}
.use-case-card .uc-icon { font-size: 2rem; margin-bottom: 10px; }
.use-case-card h4 { font-size: .95rem; font-weight: 600; margin-bottom: 6px; }
.use-case-card p { font-size: .83rem; color: var(--text-muted); }

/* Batch grid */
.batch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px; margin: 20px 0;
}
.batch-item {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px;
  text-align: center;
}
.batch-item canvas { margin: 0 auto 8px !important; }
.batch-item .batch-label {
  font-size: .73rem; color: var(--text-muted);
  word-break: break-all; margin-bottom: 8px; line-height: 1.4;
}
.batch-item .btn-dl-single {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 5px 12px; background: var(--accent); color: #fff;
  border: none; border-radius: 6px; font-size: .75rem;
  font-weight: 600; cursor: pointer; font-family: inherit;
  transition: background .18s;
}
.batch-item .btn-dl-single:hover { background: var(--accent-hover); }

/* Progress bar */
.progress-wrap { height: 6px; background: var(--border); border-radius: 999px; margin: 12px 0; overflow: hidden; display: none; }
.progress-wrap.visible { display: block; }
.progress-bar { height: 100%; background: var(--accent); border-radius: 999px; transition: width .3s; width: 0; }

/* ---- How it works ---- */
.how-section { background: var(--bg-secondary); padding: 64px 0; }
.steps-row { display: flex; gap: 32px; justify-content: center; flex-wrap: wrap; }
.step { flex: 1; min-width: 180px; max-width: 260px; text-align: center; }
.step-icon { font-size: 2.2rem; margin-bottom: 12px; display: block; }
.step h3 { font-size: .95rem; font-weight: 600; margin-bottom: 6px; }
.step p  { font-size: .84rem; color: var(--text-muted); }

/* ---- Feature highlight cards ---- */
.features-section { padding: 64px 0; }
.features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.feature-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 24px;
}
.feature-card .f-icon { font-size: 1.8rem; margin-bottom: 12px; }
.feature-card h3 { font-size: .97rem; font-weight: 600; margin-bottom: 7px; }
.feature-card p { font-size: .84rem; color: var(--text-muted); line-height: 1.65; }

/* ---- FAQ ---- */
.faq-section { padding: 56px 0; background: var(--bg-secondary); }
.faq-list { max-width: 800px; margin: 24px auto 0; }
.faq-item {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); margin-bottom: 10px; overflow: hidden;
}
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 15px 20px; background: none; border: none;
  text-align: left; font-size: .93rem; font-weight: 600;
  color: var(--text); cursor: pointer; font-family: inherit; gap: 12px;
}
.faq-q .chevron { flex-shrink: 0; font-size: 1.1rem; transition: transform .2s; }
.faq-item.open .chevron { transform: rotate(180deg); }
.faq-a {
  display: none; padding: 0 20px 14px;
  font-size: .88rem; color: var(--text-muted); line-height: 1.7;
}
.faq-item.open .faq-a { display: block; }

/* ---- Breadcrumb ---- */
.breadcrumb {
  padding: 12px 0; font-size: .83rem; color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 6px; }

/* ---- Related tools ---- */
.related-section { padding: 48px 0; }
.related-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 20px; }
.related-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 18px;
  text-decoration: none; color: var(--text); transition: all .18s;
}
.related-card:hover { border-color: #c7d2fe; box-shadow: var(--shadow-hover); text-decoration: none; }
.related-card .r-icon { font-size: 1.7rem; }
.related-card .r-title { font-size: .88rem; font-weight: 600; }
.related-card .r-sub   { font-size: .76rem; color: var(--text-muted); }

/* ---- Footer ---- */
.site-footer {
  background: var(--bg-secondary); border-top: 1px solid var(--border);
  padding: 48px 0 28px;
}
.footer-family { text-align: center; margin-bottom: 24px; }
.footer-family h4 {
  font-size: .82rem; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: 14px;
}
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 18px; }
.footer-links a {
  font-size: .82rem; color: var(--text-muted); text-decoration: none; transition: color .18s;
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  text-align: center; border-top: 1px solid var(--border);
  padding-top: 20px; margin-top: 20px;
  font-size: .8rem; color: var(--text-muted);
}

/* ---- Buttons (generic) ---- */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; background: var(--accent); color: #fff;
  border: none; border-radius: var(--radius-sm);
  font-size: .95rem; font-weight: 600; cursor: pointer;
  transition: background .18s; font-family: inherit;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { background: #d1d5db; cursor: not-allowed; }

.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 22px; background: var(--bg); color: var(--accent);
  border: 1.5px solid var(--accent); border-radius: var(--radius-sm);
  font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: all .18s; font-family: inherit;
}
.btn-secondary:hover { background: var(--accent-light); }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex; flex-direction: column;
    position: fixed; inset: 60px 0 0 0;
    background: rgba(255,255,255,.98); backdrop-filter: blur(12px);
    padding: 24px; gap: 16px; align-items: flex-start;
    font-size: 1.05rem; z-index: 99;
  }
  .nav-toggle { display: flex; }
  .use-case-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .hero { padding: 40px 20px 30px; }
  .generator-card { padding: 20px; }
  .type-tabs { gap: 2px; }
  .type-tab { min-width: 48px; padding: 6px 6px; font-size: .72rem; }
  .type-tab .tab-icon { font-size: .95rem; }
}

@media (max-width: 480px) {
  .ec-options { gap: 6px; }
  .color-row { flex-direction: column; align-items: flex-start; }
  .form-row { flex-direction: column; }
  .batch-grid { grid-template-columns: repeat(2,1fr); }
}