/* ============================================
   FARQR - Premium QR Code Generator
   Custom Styles - Modern Minimalist Dark/Light
   ============================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
  --bg-primary: #09090b;
  --bg-secondary: #121215;
  --bg-card: #18181b;
  --bg-card-hover: #202024;
  --bg-input: #0f0f12;
  --bg-navbar: #09090b;
  --bg-footer: #050507;

  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-accent: #818cf8;

  --accent-primary: #6366f1;
  --accent-secondary: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  --accent-gradient-hover: linear-gradient(135deg, #818cf8 0%, #6366f1 100%);
  --accent-glow: rgba(99, 102, 241, 0.2);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(99, 102, 241, 0.35);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 50px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s ease;

  --font-primary: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* --- Light Theme Variables --- */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #f8fafc;
  --bg-navbar: #ffffff;
  --bg-footer: #f1f5f9;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-accent: #4f46e5;

  --border-color: rgba(0, 0, 0, 0.08);
  --border-accent: rgba(99, 102, 241, 0.35);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
}

/* --- Light Mode Component Overrides --- */
[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse at 20% 40%, rgba(99, 102, 241, 0.03) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(79, 70, 229, 0.02) 0%, transparent 60%);
}

[data-theme="light"] .navbar {
  background: #ffffff !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .navbar .nav-link {
  color: #475569 !important;
}

[data-theme="light"] .navbar .nav-link:hover {
  color: #0f172a !important;
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .brand-title {
  color: #0f172a;
}

[data-theme="light"] .btn-nav-login {
  border-color: var(--border-accent);
  color: var(--accent-primary) !important;
}

[data-theme="light"] .dropdown-menu {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .dropdown-item {
  color: #475569;
}

[data-theme="light"] .dropdown-item:hover,
[data-theme="light"] .dropdown-item.active {
  background: rgba(99, 102, 241, 0.08);
  color: var(--accent-primary);
}

[data-theme="light"] .modal-content {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.1);
  color: #0f172a;
}

[data-theme="light"] .btn-close {
  filter: none;
}

[data-theme="light"] .btn-outline-light {
  color: #475569;
  border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .btn-outline-light:hover {
  background: rgba(0, 0, 0, 0.05);
  color: #0f172a;
}

[data-theme="light"] .qr-preview-wrapper {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .footer {
  background: #f1f5f9;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .footer a,
[data-theme="light"] .footer p {
  color: #64748b;
}

[data-theme="light"] .accordion-card {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .qr-preview-card {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .ec-btn {
  background: #f8fafc;
  border-color: rgba(0, 0, 0, 0.1);
  color: #475569;
}

[data-theme="light"] .ec-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
}

[data-theme="light"] .shape-btn,
[data-theme="light"] .finder-shape-btn {
  background: #f8fafc;
  border-color: rgba(0, 0, 0, 0.1);
  color: #0f172a;
}

[data-theme="light"] .shape-btn:hover,
[data-theme="light"] .finder-shape-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

[data-theme="light"] .shape-btn.active,
[data-theme="light"] .finder-shape-btn.active {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.08);
  color: var(--accent-primary);
}

[data-theme="light"] .logo-upload-area {
  background: #f8fafc;
  border-color: rgba(0, 0, 0, 0.12);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle glass background pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 15% 30%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 70%, rgba(79, 70, 229, 0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-secondary);
}

/* --- Hero Section & Typography --- */
.hero-header {
  padding: 1.5rem 0 1rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
}

h4 {
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}

p {
  color: var(--text-secondary);
}

a {
  color: var(--text-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-secondary);
}

label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 4px;
}

/* --- Navbar --- */
.navbar {
  background: var(--bg-navbar) !important;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 1050;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 3px;
  transition: transform var(--transition-normal);
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

.navbar-brand:hover .brand-icon {
  transform: rotate(5deg) scale(1.05);
}

.hero-icon-container {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  padding: 10px;
  box-shadow: var(--shadow-md);
  margin-bottom: 0.75rem;
  transition: transform var(--transition-normal);
}

.hero-icon-container:hover {
  transform: translateY(-2px) scale(1.05);
}

.hero-icon-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
}

.preview-placeholder-img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  display: block;
  margin: 0 auto 0.75rem;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.15));
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.brand-slogan {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.navbar .nav-link {
  color: var(--text-secondary) !important;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.navbar .nav-link:hover {
  color: #fff !important;
  background: rgba(255, 255, 255, 0.05);
}

.btn-nav-login {
  background: transparent;
  border: 1px solid var(--border-accent);
  color: var(--text-accent) !important;
  font-size: 0.85rem;
  padding: 0.4rem 1.2rem !important;
  border-radius: var(--radius-pill);
  font-weight: 500;
  transition: all var(--transition-normal);
}

.btn-nav-login:hover {
  background: rgba(124, 58, 237, 0.15);
  border-color: var(--accent-primary);
}

.btn-nav-signup {
  background: var(--accent-gradient);
  border: none;
  color: #fff !important;
  font-size: 0.85rem;
  padding: 0.4rem 1.2rem !important;
  border-radius: var(--radius-pill);
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-nav-signup:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* --- Main Content --- */
.main-content {
  padding: 2rem 0 4rem;
}

/* --- QR Type Tabs (Pills) --- */
.qr-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0;
  list-style: none;
  margin-bottom: 1.5rem;
}

.qr-tabs .nav-link {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  padding: 0.45rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-normal);
  white-space: nowrap;
  cursor: pointer;
}

.qr-tabs .nav-link:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-accent);
  transform: translateY(-1px);
}

.qr-tabs .nav-link.active {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 2px 15px var(--accent-glow);
}

.qr-tabs .nav-link i {
  font-size: 0.85rem;
}

/* --- Accordion Cards --- */
.accordion-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.accordion-card:hover {
  border-color: var(--border-accent);
}

.accordion-header {
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  padding: 1rem 1.25rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.accordion-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.accordion-header i {
  color: var(--accent-primary);
  font-size: 1rem;
  width: 24px;
  text-align: center;
}

.accordion-header .chevron {
  margin-left: auto;
  transition: transform var(--transition-normal);
  color: var(--text-muted);
  font-size: 0.8rem;
}

.accordion-header[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

.accordion-body {
  padding: 0 1.25rem 1.25rem;
}

/* --- Form Controls --- */
.form-control,
.form-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  font-size: 0.875rem;
  transition: all var(--transition-normal);
}

.form-control:focus,
.form-select:focus {
  background: var(--bg-input);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.form-control::placeholder {
  color: var(--text-muted);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.form-check-input {
  background-color: var(--bg-input);
  border-color: var(--border-color);
}

.form-check-input:checked {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.form-check-input:focus {
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.form-check-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.hint-text {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 2px;
  display: block;
}

/* --- Shape Selector --- */
.shapes-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-bottom: 1rem;
}

.shape-btn {
  aspect-ratio: 1;
  background: var(--bg-input);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 6px;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.shape-btn:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  color: var(--accent-primary);
  transform: scale(1.05);
}

.shape-btn.active {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-primary);
  box-shadow: 0 0 12px var(--accent-glow);
}

.shape-btn svg {
  width: 100%;
  height: 100%;
}

/* --- Color Picker Section --- */
.color-picker-group {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}

.color-preview {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.color-preview:hover {
  border-color: var(--accent-primary);
  transform: scale(1.05);
}

.color-preview input[type="color"] {
  position: absolute;
  top: -10px;
  left: -10px;
  width: calc(100% + 20px);
  height: calc(100% + 20px);
  border: none;
  cursor: pointer;
  opacity: 0;
}

.color-hex-input {
  width: 110px;
}

/* --- Logo Upload --- */
.logo-upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  background: var(--bg-input);
  max-width: 100%;
  overflow: hidden;
}

.logo-upload-area:hover {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.05);
}

.logo-upload-area i {
  font-size: 1.75rem;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  display: block;
}

.logo-upload-area p {
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin: 0;
}

.logo-preview-card {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  transition: all var(--transition-normal);
  max-width: 100%;
  overflow: hidden;
}

.logo-thumb-box {
  width: 56px;
  height: 56px;
  min-width: 56px;
  max-width: 56px;
  min-height: 56px;
  max-height: 56px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  overflow: hidden;
  flex-shrink: 0;
  box-sizing: border-box;
}

.logo-thumb-box img,
#logo-preview-img {
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain !important;
  display: block !important;
}

.logo-preview-info {
  flex: 1;
  min-width: 0;
}

.logo-status-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: #10b981;
  display: inline-flex;
  align-items: center;
}

.logo-actions {
  display: flex;
  gap: 6px;
}

.logo-actions .btn {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
}

/* --- QR Preview Card --- */
.qr-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  position: sticky;
  top: 80px;
  text-align: center;
  transition: border-color var(--transition-normal);
}

.qr-preview-card:hover {
  border-color: var(--border-accent);
}

.qr-preview-wrapper {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  width: 100%;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.qr-preview-wrapper canvas,
.qr-preview-wrapper svg,
.qr-preview-wrapper img {
  max-width: 100% !important;
  height: auto !important;
}

.qr-preview-placeholder {
  color: #bbb;
  text-align: center;
}

.qr-preview-placeholder i {
  font-size: 3rem;
  color: #ddd;
  margin-bottom: 0.5rem;
  display: block;
}

.qr-preview-placeholder p {
  color: #999;
  font-size: 0.85rem;
}

/* --- Download Buttons --- */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.btn-download {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn-download:hover {
  background: rgba(124, 58, 237, 0.15);
  border-color: var(--accent-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-download i {
  font-size: 0.9rem;
}

.btn-download.btn-download-primary {
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  grid-column: span 2;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-download.btn-download-primary:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* --- Primary Action Button --- */
.btn-generate {
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 0.75rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px var(--accent-glow);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.02em;
}

.btn-generate:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--accent-glow);
}

.btn-generate:active {
  transform: translateY(0);
}

/* --- Error Correction Level --- */
.ec-selector {
  display: flex;
  gap: 6px;
}

.ec-btn {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-normal);
}

.ec-btn:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.ec-btn.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #fff;
  box-shadow: 0 2px 10px var(--accent-glow);
}

/* --- Section Divider --- */
.section-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 1.25rem 0;
}

/* --- Info Section / About --- */
.info-section {
  padding: 4rem 0;
}

.info-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.info-section h4 {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
}

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: all var(--transition-normal);
}

.faq-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.faq-card h5 {
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.faq-card p {
  font-size: 0.85rem;
  margin: 0;
  color: var(--text-secondary);
}

/* --- Footer --- */
.footer {
  background: var(--bg-footer);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
}

.footer a {
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--text-accent);
}

.footer p {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer .list-inline-item + .list-inline-item::before {
  content: '·';
  padding-right: 0.5rem;
  color: var(--text-muted);
}

/* --- Modal Overrides --- */
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
}

.modal-header .modal-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-body {
  padding: 1.5rem 1.25rem;
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
}

.btn-close {
  filter: invert(1);
}

/* --- Dropdown Override --- */
.dropdown-menu {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  box-shadow: var(--shadow-lg);
}

.dropdown-item {
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(124, 58, 237, 0.1);
  color: var(--text-primary);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-fadeInUp {
  animation: fadeInUp 0.5s ease forwards;
}

.qr-preview-card {
  animation: fadeInUp 0.6s ease forwards;
}

/* Tab pane fade */
.tab-pane {
  animation: fadeInUp 0.3s ease;
}

/* --- Utility --- */
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hidden-element {
  display: none !important;
}

.glass-effect {
  background: rgba(28, 28, 48, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
}

/* Logo remove button */
.logo-remove-btn {
  background: rgba(239, 68, 68, 0.8);
  border: none;
  color: #fff;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  font-size: 0.7rem;
  cursor: pointer;
  position: absolute;
  top: -8px;
  right: -8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.logo-remove-btn:hover {
  background: #ef4444;
  transform: scale(1.1);
}

.logo-wrapper {
  position: relative;
  display: inline-block;
}

/* Margin size slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  outline: none;
  border: 1px solid var(--border-color);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent-gradient);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px var(--accent-glow);
  transition: transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* --- Tab pane sections header --- */
.tab-section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-section-title i {
  color: var(--accent-primary);
}

/* --- Responsive --- */
@media (max-width: 991.98px) {
  .qr-preview-card {
    position: relative;
    top: 0;
    margin-top: 1.5rem;
  }

  .shapes-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .qr-tabs .nav-link {
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
  }
}

@media (max-width: 767.98px) {
  .main-content {
    padding: 1rem 0 3rem;
  }

  .shapes-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .btn-download.btn-download-primary {
    grid-column: span 1;
  }

  .brand-slogan {
    display: none;
  }

  .qr-tabs {
    gap: 4px;
  }

  .qr-tabs .nav-link {
    padding: 0.3rem 0.6rem;
    font-size: 0.7rem;
  }

  .qr-tabs .nav-link span {
    display: none;
  }

  .ec-selector {
    flex-wrap: wrap;
  }
}

@media (max-width: 575.98px) {
  .shapes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Finder pattern shapes grid */
.finder-shapes-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 1rem;
}

.finder-shape-btn {
  aspect-ratio: 1;
  background: var(--bg-input);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 4px;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.finder-shape-btn:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  color: var(--accent-primary);
  transform: scale(1.05);
}

.finder-shape-btn.active {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-primary);
  box-shadow: 0 0 12px var(--accent-glow);
}

.finder-shape-btn svg {
  width: 100%;
  height: 100%;
}

/* QR Code output container */
#qr-output {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1 / 1;
}

#qr-output canvas,
#qr-output svg,
#qr-output img {
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain;
  border-radius: 6px;
}

/* Margin Size Display */
.range-value {
  display: inline-block;
  min-width: 32px;
  text-align: center;
  font-weight: 600;
  color: var(--accent-primary);
  font-size: 0.9rem;
}

/* Toast notification */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
}

.custom-toast {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: fadeInUp 0.3s ease;
}

.custom-toast i {
  color: var(--accent-secondary);
}

/* File input */
input[type="file"] {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  width: 100%;
}

input[type="file"]::file-selector-button {
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  margin-right: 8px;
  transition: all var(--transition-fast);
}

input[type="file"]::file-selector-button:hover {
  background: var(--accent-gradient-hover);
}

/* Section subtitle */
.design-subtitle {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  margin-top: 0.5rem;
}

/* ============================================
   Preview Card - Redesigned (GenQRCode style)
   ============================================ */

/* Image size text */
.preview-size-label {
  padding-top: 0.5rem;
}

.image-size-text {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.image-size-text strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* Preview size slider */
.preview-size-slider {
  margin-bottom: 0.75rem;
  padding: 0 0.25rem;
}

.preview-size-slider input[type="range"] {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.preview-size-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px var(--accent-glow);
  transition: transform 0.15s ease;
}

.preview-size-slider input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.preview-size-slider input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--accent-primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* Download As label */
.download-as-label {
  text-align: center;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

/* Preview download button grid */
.preview-download-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 0.75rem;
}

.prev-dl-btn {
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  border-radius: 6px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 64px;
  text-align: center;
  letter-spacing: 0.02em;
  font-family: var(--font-heading);
}

.prev-dl-btn:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-1px);
  box-shadow: 0 3px 12px var(--accent-glow);
}

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

/* JPEG transparency note */
.jpeg-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0;
}

/* Embed section */
.embed-label {
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.btn-embed {
  display: block;
  width: 100%;
  max-width: 220px;
  margin: 0 auto;
  background: var(--accent-gradient);
  border: none;
  color: #fff;
  border-radius: 8px;
  padding: 0.55rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  font-family: var(--font-heading);
}

.btn-embed:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-embed:active {
  transform: scale(0.97);
}

.btn-embed i {
  margin-right: 4px;
}