/**
 * IFG QR Generator — Front-end Styles
 *
 * All selectors are scoped beneath #ifg-qr-wrapper and every class/ID
 * uses the `ifg-` prefix to guarantee zero conflicts with themes,
 * page builders, or other plugins.
 *
 * @package IFG_QR_Generator
 */

/* ===== RESET & BASE (scoped to plugin wrapper only) ===== */
#ifg-qr-wrapper, #ifg-qr-wrapper *, #ifg-qr-wrapper *::before, #ifg-qr-wrapper *::after {
  box-sizing: border-box;
  margin: 0; padding: 0;
}

#ifg-qr-wrapper {
  --ifg-brand: #5b45f5;
  --ifg-brand-2: #f0468c;
  --ifg-brand-grad: linear-gradient(135deg, #5b45f5, #f0468c);
  --ifg-bg: #f0f2ff;
  --ifg-bg-alt: #e8ecff;
  --ifg-surface: rgba(255,255,255,0.82);
  --ifg-surface-2: rgba(255,255,255,0.96);
  --ifg-border: rgba(91,69,245,0.14);
  --ifg-border-input: #d0d4e8;
  --ifg-text: #1a1a35;
  --ifg-text-2: #4a4a70;
  --ifg-text-3: #7a7a9a;
  --ifg-text-hint: #9090b0;
  --ifg-danger: #d93752;
  --ifg-success: #18a058;
  --ifg-shadow: 0 4px 24px rgba(91,69,245,0.10);
  --ifg-shadow-lg: 0 12px 48px rgba(91,69,245,0.18);
  --ifg-radius: 20px;
  --ifg-radius-sm: 12px;
  --ifg-radius-xs: 8px;
  --ifg-transition: 0.2s ease;
  --ifg-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

#ifg-qr-wrapper[data-ifg-dark] {
  --ifg-bg: #0f0f20;
  --ifg-bg-alt: #181830;
  --ifg-surface: rgba(30,30,55,0.85);
  --ifg-surface-2: rgba(30,30,55,0.97);
  --ifg-border: rgba(150,140,255,0.12);
  --ifg-border-input: #3a3a60;
  --ifg-text: #f0f0ff;
  --ifg-text-2: #c0c0e0;
  --ifg-text-3: #8888b0;
  --ifg-text-hint: #6666a0;
  --ifg-shadow: 0 4px 24px rgba(0,0,0,0.3);
  --ifg-shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
}

#ifg-qr-wrapper {
  scroll-behavior: smooth;
  font-family: var(--ifg-font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ifg-text);
  background: var(--ifg-bg);
  min-height: 100vh;
  transition: background var(--ifg-transition), color var(--ifg-transition);
  background-image: radial-gradient(ellipse 80% 50% at 20% -10%, rgba(91,69,245,0.12) 0%, transparent 60%),
                    radial-gradient(ellipse 60% 40% at 80% 0%, rgba(240,70,140,0.08) 0%, transparent 50%);
  background-attachment: fixed;
  isolation: isolate;
}

/* ===== ACCESSIBILITY ===== */
.ifg-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;
}
.ifg-skip-link {
  position: absolute; top: -100px; left: 12px;
  background: var(--ifg-brand); color: #fff;
  padding: 10px 18px; border-radius: 0 0 10px 10px;
  font-weight: 700; z-index: 999;
  transition: top 0.2s;
}
.ifg-skip-link:focus { top: 0; }
#ifg-qr-wrapper :focus-visible { outline: 3px solid var(--ifg-brand); outline-offset: 3px; border-radius: 4px; }

/* ===== LAYOUT ===== */
.ifg-page-wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* ===== HEADER ===== */
.ifg-site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--ifg-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ifg-border);
  padding: 14px 0;
}
.ifg-header-inner {
  display: flex; align-items: center; justify-content: space-between;
}
.ifg-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--ifg-text);
}
.ifg-logo-icon {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--ifg-brand-grad);
  display: grid; place-items: center; flex-shrink: 0;
}
.ifg-logo-icon svg { width: 22px; height: 22px; fill: #fff; }
.ifg-logo-text { font-size: 1.2rem; font-weight: 800; letter-spacing: -0.02em; }
.ifg-logo-text span { background: var(--ifg-brand-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.ifg-header-controls { display: flex; align-items: center; gap: 10px; }

.ifg-theme-btn {
  width: 44px; height: 44px; border-radius: 50%;
  border: 2px solid var(--ifg-border-input);
  background: var(--ifg-surface-2);
  color: var(--ifg-text); font-size: 1.2rem;
  cursor: pointer; display: grid; place-items: center;
  transition: all var(--ifg-transition);
}
.ifg-theme-btn:hover { border-color: var(--ifg-brand); transform: rotate(20deg); }

/* ===== HERO ===== */
.ifg-hero {
  padding: 48px 0 40px;
  text-align: center;
}
.ifg-hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 900; letter-spacing: -0.03em;
  line-height: 1.15; color: var(--ifg-text);
  margin-bottom: 14px;
}
.ifg-hero h1 em {
  font-style: normal;
  background: var(--ifg-brand-grad);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.ifg-hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--ifg-text-2); max-width: 600px;
  margin: 0 auto 28px;
}
.ifg-hero-badges {
  display: flex; flex-wrap: wrap; gap: 8px;
  justify-content: center;
}
.ifg-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--ifg-surface-2); border: 1px solid var(--ifg-border);
  border-radius: 999px; padding: 6px 14px;
  font-size: 0.82rem; font-weight: 600; color: var(--ifg-text-2);
}
.ifg-badge-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ifg-success);
}

/* ===== MAIN GRID ===== */
.ifg-studio {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding-bottom: 60px;
  align-items: start;
}
@media (max-width: 820px) {
  .ifg-studio { grid-template-columns: 1fr; }
}

/* ===== CARD / PANEL ===== */
.ifg-card {
  background: var(--ifg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--ifg-border);
  border-radius: var(--ifg-radius);
  box-shadow: var(--ifg-shadow);
  overflow: hidden;
  transition: box-shadow var(--ifg-transition);
}
.ifg-card:hover { box-shadow: var(--ifg-shadow-lg); }
.ifg-card-header {
  padding: 20px 24px 0;
  border-bottom: 1px solid var(--ifg-border);
  padding-bottom: 16px;
  margin-bottom: 20px;
}
.ifg-card-header h2 {
  font-size: 1rem; font-weight: 700;
  color: var(--ifg-text); letter-spacing: -0.01em;
}
.ifg-card-header p {
  font-size: 0.85rem; color: var(--ifg-text-3); margin-top: 2px;
}
.ifg-card-body { padding: 0 24px 24px; }

/* ===== FORM ELEMENTS ===== */
.ifg-field { margin-bottom: 16px; }
.ifg-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .ifg-field-row { grid-template-columns: 1fr; } }

label.ifg-field-label {
  display: block;
  font-size: 0.85rem; font-weight: 700;
  color: var(--ifg-text); margin-bottom: 6px;
  letter-spacing: 0.01em;
}
.ifg-field-desc {
  font-size: 0.78rem; color: var(--ifg-text-hint);
  margin-top: 4px; line-height: 1.4;
}

.ifg-input, .ifg-select, textarea.ifg-input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--ifg-radius-xs);
  border: 2px solid var(--ifg-border-input);
  background: var(--ifg-surface-2);
  color: var(--ifg-text);
  font-family: var(--ifg-font);
  font-size: 0.95rem;
  transition: border-color var(--ifg-transition), box-shadow var(--ifg-transition);
  -webkit-appearance: none;
  appearance: none;
}
.ifg-input:focus, .ifg-select:focus, textarea.ifg-input:focus {
  border-color: var(--ifg-brand);
  box-shadow: 0 0 0 3px rgba(91,69,245,0.15);
  outline: none;
}
.ifg-input::placeholder, textarea.ifg-input::placeholder { color: var(--ifg-text-hint); }
textarea.ifg-input { min-height: 80px; resize: vertical; }

.ifg-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234a4a70' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 38px;
}

/* Range sliders */
.ifg-slider-wrap { display: flex; align-items: center; gap: 10px; }
.ifg-slider-wrap .ifg-input-range { flex: 1; }
.ifg-slider-val {
  min-width: 52px; text-align: right;
  font-size: 0.88rem; font-weight: 700;
  color: var(--ifg-brand); font-variant-numeric: tabular-nums;
}
#ifg-qr-wrapper input[type="range"] {
  -webkit-appearance: none; appearance: none;
  height: 6px; border-radius: 3px;
  background: linear-gradient(90deg, var(--ifg-brand), var(--ifg-brand-2));
  cursor: pointer; width: 100%;
  border: none; outline: none;
}
#ifg-qr-wrapper input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px; height: 22px; border-radius: 50%;
  background: #fff; border: 3px solid var(--ifg-brand);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15); cursor: pointer;
}
#ifg-qr-wrapper input[type="range"]::-moz-range-thumb {
  width: 22px; height: 22px; border-radius: 50%;
  background: #fff; border: 3px solid var(--ifg-brand);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15); cursor: pointer; border: 3px solid var(--ifg-brand);
}

/* Color pickers */
.ifg-color-row {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  border-radius: var(--ifg-radius-xs);
  border: 2px solid var(--ifg-border-input);
  background: var(--ifg-surface-2);
  cursor: pointer;
  transition: border-color var(--ifg-transition);
}
.ifg-color-row:focus-within { border-color: var(--ifg-brand); box-shadow: 0 0 0 3px rgba(91,69,245,0.15); }
#ifg-qr-wrapper input[type="color"] {
  width: 32px; height: 32px; border: none;
  border-radius: 6px; cursor: pointer;
  background: none; padding: 0; flex-shrink: 0;
}
#ifg-qr-wrapper input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
#ifg-qr-wrapper input[type="color"]::-webkit-color-swatch { border: none; border-radius: 6px; }
.ifg-color-hex {
  flex: 1; border: none; background: transparent;
  font-family: monospace; font-size: 0.92rem;
  color: var(--ifg-text); cursor: text;
}
.ifg-color-hex:focus { outline: none; }

/* Section divider */
.ifg-divider {
  display: flex; align-items: center; gap: 10px;
  margin: 20px 0 16px;
  font-size: 0.75rem; font-weight: 800;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ifg-text-3);
}
.ifg-divider::before, .ifg-divider::after {
  content: ""; flex: 1; height: 1px; background: var(--ifg-border);
}

/* Logo upload */
.ifg-upload-area {
  border: 2px dashed var(--ifg-border-input);
  border-radius: var(--ifg-radius-xs);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--ifg-transition), background var(--ifg-transition);
}
.ifg-upload-area:hover { border-color: var(--ifg-brand); background: rgba(91,69,245,0.04); }
.ifg-upload-area input { display: none; }
.ifg-upload-area p { font-size: 0.88rem; color: var(--ifg-text-3); margin-top: 4px; }
.ifg-upload-icon { font-size: 1.6rem; }
.ifg-upload-label {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--ifg-brand-grad); color: #fff;
  padding: 8px 18px; border-radius: 999px;
  font-size: 0.85rem; font-weight: 700; cursor: pointer;
  margin-top: 8px; border: none;
}
.ifg-logo-preview {
  display: flex; align-items: center; gap: 10px;
  background: var(--ifg-surface-2);
  border: 2px solid var(--ifg-border-input);
  border-radius: var(--ifg-radius-xs);
  padding: 10px 14px;
}
.ifg-logo-preview img {
  width: 36px; height: 36px; border-radius: 6px;
  object-fit: cover;
}
.ifg-logo-preview-name { flex: 1; font-size: 0.85rem; color: var(--ifg-text-2); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ifg-remove-btn {
  background: none; border: none; cursor: pointer;
  color: var(--ifg-danger); font-size: 1.1rem;
  padding: 4px 6px; border-radius: 6px;
  transition: background var(--ifg-transition);
}
.ifg-remove-btn:hover { background: rgba(217,55,82,0.1); }

/* Error message */
.ifg-error-msg {
  font-size: 0.85rem; font-weight: 700;
  color: var(--ifg-danger); min-height: 1.2em;
  margin-top: -8px; margin-bottom: 12px;
  display: flex; align-items: center; gap: 6px;
}

/* ===== BUTTONS ===== */
.ifg-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; border: none; border-radius: 999px;
  font-family: var(--ifg-font); font-weight: 700;
  font-size: 0.9rem; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  padding: 12px 20px; line-height: 1;
  text-decoration: none; white-space: nowrap;
  min-height: 44px;
}
.ifg-btn:active { transform: scale(0.96); }
.ifg-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.ifg-btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.ifg-btn-primary {
  background: var(--ifg-brand-grad); color: #fff;
  box-shadow: 0 8px 24px rgba(91,69,245,0.4);
}
.ifg-btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(91,69,245,0.5);
}

.ifg-btn-outline {
  background: var(--ifg-surface-2);
  border: 2px solid var(--ifg-border-input);
  color: var(--ifg-text-2);
}
.ifg-btn-outline:hover:not(:disabled) {
  border-color: var(--ifg-brand); color: var(--ifg-brand);
  transform: translateY(-1px);
}

.ifg-btn-ghost {
  background: transparent;
  border: none;
  color: var(--ifg-text-3);
  font-size: 0.82rem;
  padding: 8px 12px;
  min-height: 36px;
}
.ifg-btn-ghost:hover { color: var(--ifg-brand); background: rgba(91,69,245,0.07); border-radius: 8px; }

/* ===== PREVIEW PANEL ===== */
.ifg-preview-panel {
  position: sticky; top: 82px;
}
@media (max-width: 820px) {
  .ifg-preview-panel { position: static; }
}

.ifg-preview-stage {
  display: flex; justify-content: center; align-items: center;
  padding: 28px 20px;
  min-height: 280px;
}
.ifg-canvas-wrap {
  background: #fff;
  border-radius: var(--ifg-radius-sm);
  padding: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.08);
  display: inline-flex;
  transition: transform var(--ifg-transition);
}
.ifg-canvas-wrap:hover { transform: scale(1.02); }
#ifg-qrCanvas { display: block; }

.ifg-preview-placeholder {
  text-align: center; padding: 32px 20px; color: var(--ifg-text-3);
}
.ifg-preview-placeholder .ifg-ph-icon { font-size: 3rem; margin-bottom: 8px; }
.ifg-preview-placeholder p { font-size: 0.9rem; }

.ifg-preview-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 0 20px;
  margin-bottom: 12px;
}
@media (max-width: 360px) {
  .ifg-preview-actions { grid-template-columns: 1fr; }
}

.ifg-download-section {
  padding: 16px 20px 20px;
  border-top: 1px solid var(--ifg-border);
}
.ifg-download-section label.ifg-field-label {
  margin-bottom: 8px; display: block;
}
.ifg-download-row { display: flex; gap: 8px; }
.ifg-download-select { max-width: 100px; }

/* ===== STATUS BAR ===== */
.ifg-status-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 20px; margin-bottom: 0;
  font-size: 0.8rem; color: var(--ifg-text-3);
  border-top: 1px solid var(--ifg-border);
}
.ifg-status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ifg-border-input); flex-shrink: 0;
  transition: background 0.3s;
}
.ifg-status-dot.ifg-active { background: var(--ifg-success); }

/* ===== CONTENT SECTIONS ===== */
.ifg-content-wrap { padding: 60px 0 40px; }
.ifg-content-section { margin-bottom: 56px; }
.ifg-content-section h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800; letter-spacing: -0.02em;
  color: var(--ifg-text); margin-bottom: 12px;
}
.ifg-content-section > p, .ifg-content-section li {
  font-size: 1rem; color: var(--ifg-text-2); line-height: 1.75;
}
.ifg-content-section p + p { margin-top: 12px; }

.ifg-steps { list-style: none; counter-reset: steps; display: flex; flex-direction: column; gap: 14px; }
.ifg-steps li {
  counter-increment: steps;
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--ifg-surface);
  border: 1px solid var(--ifg-border);
  border-radius: var(--ifg-radius-sm);
  padding: 18px 20px;
}
.ifg-steps li::before {
  content: counter(steps);
  min-width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--ifg-brand-grad);
  color: #fff; font-weight: 800; font-size: 0.95rem;
  display: grid; place-items: center; flex-shrink: 0;
}
.ifg-steps li strong { display: block; color: var(--ifg-text); margin-bottom: 2px; }

.ifg-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.ifg-feature-item {
  background: var(--ifg-surface);
  border: 1px solid var(--ifg-border);
  border-radius: var(--ifg-radius-sm);
  padding: 20px;
  transition: transform var(--ifg-transition), box-shadow var(--ifg-transition);
}
.ifg-feature-item:hover { transform: translateY(-3px); box-shadow: var(--ifg-shadow-lg); }
.ifg-feat-icon { font-size: 1.6rem; margin-bottom: 8px; }
.ifg-feature-item h3 { font-size: 0.95rem; font-weight: 700; color: var(--ifg-text); margin-bottom: 4px; }
.ifg-feature-item p { font-size: 0.85rem; color: var(--ifg-text-3); }

.ifg-faq-list { display: flex; flex-direction: column; gap: 10px; }
details.ifg-faq {
  background: var(--ifg-surface);
  border: 1px solid var(--ifg-border);
  border-radius: var(--ifg-radius-sm);
  overflow: hidden;
}
details.ifg-faq summary {
  padding: 18px 20px;
  font-weight: 700; font-size: 0.95rem; color: var(--ifg-text);
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  gap: 10px;
  user-select: none;
}
details.ifg-faq summary::-webkit-details-marker { display: none; }
.ifg-faq-chevron {
  width: 20px; height: 20px; flex-shrink: 0;
  stroke: var(--ifg-brand); transition: transform 0.2s;
}
details.ifg-faq[open] .ifg-faq-chevron { transform: rotate(180deg); }
details.ifg-faq p {
  padding: 0 20px 18px; font-size: 0.93rem;
  color: var(--ifg-text-2); line-height: 1.7;
}

/* ===== FOOTER ===== */
.ifg-site-footer {
  background: var(--ifg-surface);
  border-top: 1px solid var(--ifg-border);
  padding: 28px 0; text-align: center;
  font-size: 0.85rem; color: var(--ifg-text-3);
}
.ifg-site-footer a { color: var(--ifg-brand); text-decoration: none; }

/* ===== TOAST ===== */
.ifg-toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #1a1a35; color: #fff;
  padding: 12px 20px; border-radius: 999px;
  font-size: 0.9rem; font-weight: 600;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 500; white-space: nowrap;
  max-width: calc(100vw - 32px);
  display: flex; align-items: center; gap: 8px;
}
.ifg-toast.ifg-show { opacity: 1; transform: translateX(-50%) translateY(0); }
.ifg-toast-icon { font-size: 1rem; }

/* ===== PRINT ===== */
@media print {
  .ifg-site-header, .ifg-controls-card, .ifg-preview-actions, .ifg-download-section,
  .ifg-content-wrap, .ifg-site-footer, .ifg-toast { display: none !important; }
  .ifg-preview-panel { position: static; box-shadow: none; border: none; background: none; }
  .ifg-canvas-wrap { box-shadow: none; padding: 0; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  #ifg-qr-wrapper, #ifg-qr-wrapper *, #ifg-qr-wrapper *::before, #ifg-qr-wrapper *::after {
    transition: none !important; animation: none !important;
  }
}