:root {
  --primary: #007bff;
  --primary-dark: #0056b3;
  --secondary: #6c757d;
  --success: #28a745;
  --danger: #dc3545;
  --warning: #ffc107;
  --info: #17a2b8;
  --light: #f8f9fa;
  --dark: #212529;
  --white: #ffffff;
  --border: #dee2e6;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
  --radius: 8px;
  --transition: all 0.3s ease;

  /* Light theme */
  --bg: #ffffff;
  --bg-secondary: #f8f9fa;
  --text: #212529;
  --text-secondary: #6c757d;
  --panel: #f8f9fa;
  --input-bg: #ffffff;
  --input-border: #dee2e6;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --text: #e0e0e0;
  --text-secondary: #a0a0a0;
  --panel: #2d2d2d;
  --input-bg: #3a3a3a;
  --input-border: #444444;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  transition: var(--transition);
  line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Layout */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#app, main {
  flex: 1;
}

header {
  background-color: var(--bg);
  border-bottom: 2px solid var(--primary);
  padding: 3rem 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-secondary);
  margin-top: 3rem;
}

/* Containers */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem 2rem;
  width: 100%;
}

/* Input Elements */
input, textarea, select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  background-color: var(--input-bg);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

textarea {
  resize: vertical;
}

input[readonly] {
  background-color: var(--panel);
  cursor: default;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text);
}

/* Buttons */
button, .btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
  text-align: center;
}

button:hover, .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

button:active, .btn:active {
  transform: translateY(0);
}

.btn-primary, button[type="submit"] {
  background-color: var(--primary);
  color: var(--white);
}

.btn-primary:hover, button[type="submit"]:hover {
  background-color: var(--primary-dark);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: #5a6268;
}

.btn-success {
  background-color: var(--success);
  color: var(--white);
}

.btn-danger {
  background-color: var(--danger);
  color: var(--white);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--white);
}

.cta-button {
  background-color: var(--primary);
  color: var(--white);
  padding: 12px 32px;
  font-size: 1.1rem;
  border-radius: 50px;
}

.cta-button:hover {
  background-color: var(--primary-dark);
}

.copy-btn {
  background-color: var(--info);
  color: var(--white);
  padding: 8px 16px;
  font-size: 0.9rem;
  width: auto;
}

.signup-btn {
  background-color: var(--primary);
  color: var(--white);
  width: 100%;
  padding: 12px;
  font-weight: 600;
  margin-top: 1rem;
}

/* Sections */
section {
  margin-bottom: 2rem;
}

.input-section {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.input-section h2 {
  margin-top: 0;
}

.preview-section {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.preview-section h2 {
  margin-top: 0;
}

.info-section {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.info-section h2 {
  margin-top: 0;
  color: var(--primary);
}

.info-section h3 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.info-section ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.info-section li {
  margin-bottom: 0.5rem;
}

/* Form Container */
.form-container {
  margin-bottom: 1.5rem;
}

.form-container label {
  margin-bottom: 0.5rem;
}

/* Grid Layout */
.grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.feature-card h3 {
  margin: 0;
  color: var(--primary);
}

.feature-card p {
  margin: 0;
  font-size: 0.95rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  animation: fadeIn 0.3s ease;
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: var(--bg);
  padding: 2rem;
  border-radius: var(--radius);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.close-modal {
  position: absolute;
  right: 1rem;
  top: 1rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
}

.close-modal:hover {
  color: var(--text);
}

#email-modal form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  z-index: 999;
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}

.theme-toggle:hover {
  transform: scale(1.1);
}

/* Navigation */
nav {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav a {
  margin-right: 2rem;
  color: var(--text);
  font-weight: 500;
}

nav a:hover {
  color: var(--primary);
  text-decoration: none;
}

nav a.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 0.25rem;
}

/* Search Bar */
.search-bar {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.search-bar input {
  flex: 1;
}

.search-bar button {
  padding: 12px 24px;
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* Large screens - 4+ columns */
@media (min-width: 1200px) {
  .tools-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Medium screens - 3 columns */
@media (min-width: 992px) and (max-width: 1199px) {
  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablets - 2 columns */
@media (min-width: 768px) and (max-width: 991px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile - 2 columns for better density */
@media (max-width: 767px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

/* Small mobile - 1 column */
@media (max-width: 480px) {
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

.tool-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.tool-card h3 {
  margin: 0;
  color: var(--primary);
  font-size: 1.1rem;
}

.tool-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.tool-category {
  display: inline-block;
  background-color: var(--primary);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.5rem;
  width: fit-content;
}

/* Tools Grid Layout - 2 columns on desktop */
/* Main Layout with Ads */
main {
  display: grid !important;
  grid-template-columns: auto 1fr auto;
  gap: 2rem;
  max-width: 100%;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Tools Container - fills center column */
main > div:nth-of-type(2) {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  width: 100%;
}

main > aside {
  position: sticky;
  top: 2rem;
  height: fit-content;
}

/* Responsive */
@media (max-width: 1024px) {
  main {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  main > aside {
    display: none;
  }

  main > div:nth-of-type(2) {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  main {
    grid-template-columns: 1fr !important;
    padding: 1.5rem 0.5rem;
  }

  main > aside {
    display: none !important;
  }

  main > div:nth-of-type(2) {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  header {
    padding: 2rem 1rem;
    margin-bottom: 1.5rem;
  }

  header h1 {
    font-size: 1.8rem;
  }

  header p {
    font-size: 1rem;
  }

  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }
  h3 { font-size: 1.2rem; }

  main {
    padding: 0 1rem 1rem;
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  .feature-card {
    padding: 1.5rem;
  }

  .theme-toggle {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
    font-size: 1.2rem;
  }

  nav {
    padding: 1rem;
    overflow-x: auto;
  }

  nav a {
    margin-right: 1rem;
    white-space: nowrap;
  }

  .input-section, .preview-section, .info-section {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  header {
    padding: 1.5rem 1rem;
  }

  header h1 {
    font-size: 1.5rem;
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.2rem; }
  h3 { font-size: 1rem; }

  .feature-card {
    padding: 1rem;
  }

  .search-bar {
    flex-direction: column;
  }

  .input-section, .preview-section, .info-section {
    padding: 1rem;
  }
}

/* Utility Classes */
.hidden {
  display: none;
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-secondary);
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

.slide-in {
  animation: slideIn 0.3s ease;
}

/* Code blocks */
code {
  background-color: var(--panel);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  color: var(--primary);
}

pre {
  background-color: var(--panel);
  padding: 1rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin-bottom: 1rem;
}

pre code {
  background-color: transparent;
  padding: 0;
  color: var(--text);
}

/* Lists */
ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
}

th, td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background-color: var(--panel);
  font-weight: 600;
}

/* Alerts */
.alert {
  padding: 1rem;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  border-left: 4px solid;
}

.alert-info {
  background-color: #cfe2ff;
  color: #084298;
  border-color: #084298;
}

.alert-success {
  background-color: #d1e7dd;
  color: #0f5132;
  border-color: #0f5132;
}

.alert-warning {
  background-color: #fff3cd;
  color: #664d03;
  border-color: #664d03;
}

.alert-danger {
  background-color: #f8d7da;
  color: #842029;
  border-color: #842029;
}

/* Preview wrapper */
.preview-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.actions button {
  flex: 1;
  min-width: 120px;
}

@media (max-width: 480px) {
  .actions {
    flex-direction: column;
  }

  .actions button {
    width: 100%;
  }
}

/* Config sections */
.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.config-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.config-item label {
  font-weight: 600;
  font-size: 0.9rem;
}

.config-item input[type="range"] {
  width: 100%;
}

.config-item span {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Ads */
.ad-container, .sidebar-ad, .footer-ad {
  margin: 1rem 0;
  text-align: center;
  min-height: 100px;
  background-color: var(--panel);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}
:root {
    /* Light theme (default) */
    --bg-main: #ffffff;
    --bg-panel: #f8f9fa;
    --text-main: #1a1a1a;
    --text-muted: #666666;
    --accent: #667eea;
    --accent-hover: #5568d3;
    --border: #e0e0e0;
    --shadow: 0 2px 10px rgba(0,0,0,0.08);
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
    --code-bg: #f5f5f5;
    --code-text: #d63384;
}

/* Dark theme */
[data-theme="dark"] {
    --bg-main: #0a0a0a;
    --bg-panel: #1a1a1a;
    --text-main: #e0e0e0;
    --text-muted: #999999;
    --accent: #667eea;
    --accent-hover: #764ba2;
    --border: #2a2a2a;
    --shadow: 0 2px 10px rgba(0,0,0,0.3);
    --code-bg: #0f0f0f;
    --code-text: #10b981;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
}

#app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    color: var(--text-muted);
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.input-section, .preview-section {
    background: var(--bg-panel);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.input-section h2, .preview-section h2 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

ol {
    margin-bottom: 20px;
    padding-left: 20px;
}

code {
    background: #f0f0f0;
    padding: 2px 4px;
    border-radius: 4px;
}

.form-container {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
    min-height: 44px;
}

.radio-group {
    display: flex;
    gap: 20px;
    margin-top: 5px;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
}

.radio-label input[type="radio"] {
    margin-right: 8px;
    width: auto;
}

.radio-label span {
    font-weight: 600;
}

.customization h3 {
    margin-bottom: 15px;
}

.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.config-item {
    display: flex;
    flex-direction: column;
}

.config-item input[type="range"] {
    margin-top: 5px;
}

#size-val {
    text-align: center;
    margin-top: 5px;
}

.preview-wrapper {
    text-align: center;
}

#code-output {
    margin-bottom: 20px;
}

.actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

button {
    background: var(--accent);
    color: white;
    border: no2px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
    min-height: 44px;
    font-weight: 500
    transition: background 0.3s;
}

button:hover {
    background: #0056b3;
}

button i {
    margin-right: 5px;
}

footer {
    text-align: center;
    color: var(--text-muted);
    margin-top: 40px;
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: var(--bg-main);
    margin: 15% auto;
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 90%;
    max-width: 400px;
    position: relative;
    text-align: center;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-muted);
}

.close-modal:hover {
    color: var(--text-main);
}

.modal h3 {
    margin-bottom: 15px;
    color: var(--accent);
}

.modal p {
    margin-bottom: 20px;
    color: var(--text-muted);
}

#email-signup-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#signup-email {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
}

.signup-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}

.signup-btn:hover {
    background: #0056b3;
}

.privacy-note {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 15px;
}

/* Sidebar Ad */
.sidebar-ad {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 160px;
    z-index: 100;
}

.footer-ad {
    margin: 20px 0;
    text-align: center;
}

/* Enhanced Mobile Optimization */
@media (max-width: 1024px) {
    .sidebar-ad {
        display: none;
    }
    
    #app {
        padding: 15px;
    }
    
    header {
        margin-bottom: 30px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    header p {
        font-size: 1rem;
    }
    
    main {
        gap: 30px;
    }
    
    .input-section h2, .preview-section h2 {
        font-size: 1.2rem;
    }
    
    button {
        padding: 10px 16px;
        font-size: 0.95rem;
    }
}

@media (max-width: 768px) {
    #app {
        padding: 12px;
    }
    
    header {
        margin-bottom: 25px;
    }
    
    header h1 {
        font-size: 1.5rem;
        margin-bottom: 8px;
    }
    
    header p {
        font-size: 0.9rem;
    }
    
    main {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 20px;
    }
    
    .input-section, .preview-section {
        padding: 16px;
        border-radius: 8px;
    }
    
    .input-section h2, .preview-section h2 {
        margin-bottom: 15px;
        font-size: 1.1rem;
    }
    
    .form-container {
        margin-bottom: 15px;
    }
    
    label {
        margin-bottom: 6px;
        font-size: 0.95em;
    }
    
    input, select, textarea {
        padding: 12px;
        font-size: 16px !important;
        min-height: 44px;
        border-radius: 6px;
    }
    
    textarea {
        min-height: auto;
    }
    
    .radio-group {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .config-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .actions {
        flex-direction: column;
        gap: 8px;
    }
    
    button {
        padding: 12px 16px;
        font-size: 0.95rem;
        min-height: 44px;
        width: 100%;
    }
    
    button:not(:last-child) {
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        margin: 50% auto;
        padding: 20px;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .close-modal {
        font-size: 24px;
    }
    
    .modal h3 {
        margin-bottom: 12px;
        font-size: 1.1em;
    }
    
    #email-signup-form {
        gap: 12px;
    }
    
    #signup-email {
        padding: 12px;
        min-height: 44px;
        font-size: 16px;
    }
    
    .signup-btn {
        padding: 12px;
        min-height: 44px;
        font-size: 0.95rem;
    }
    
    ol {
        margin-bottom: 15px;
        padding-left: 18px;
    }
    
    ol li {
        margin-bottom: 8px;
    }
    
    footer {
        margin-top: 30px;
        font-size: 0.85rem;
        padding: 0 0 10px 0;
    }
}

@media (max-width: 480px) {
    #app {
        padding: 8px;
    }
    
    header {
        margin-bottom: 20px;
    }
    3rem;
        margin-bottom: 6px;
        word-break: break-word;
    }
    
    header p {
        font-size: 0.85rem;
        word-break: break-word;
    }
    
    main {
        gap: 15px;
        margin-bottom: 15px;
    }
    
    .input-section, .preview-section {
        padding: 12px;
        border-radius: 6px;
    }
    
    .input-section h2, .preview-section h2 {
        margin-bottom: 12px;
        font-size: 1rem;
    }
    
    .form-container {
        margin-bottom: 12px;
    }
    
    label {
        margin-bottom: 4px;
        font-size: 0.85em;
    }
    
    input, select, textarea {
        padding: 12px;
        font-size: 16px !important;
        min-height: 44px;
        border-radius: 5px;
    }
    
    .config-grid {
        grid-template-columns: 1fr;
    }
    
    .actions {
        flex-direction: column;
        gap: 8px;
    }
    
    button {
        padding: 12px 12px;
        font-size: 0.9rem;
        min-height: 48px;
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        padding: 16px;
        margin: 40% auto
        width: 95%;
        padding: 16px;
    }
    
    .privacy-note {
        font-size: 0.8rem;
    }
    
    ol {
        padding-left: 16px;
        font-size: 0.9rem;
    }
    
    code {
        font-size: 0.85em;
    }
    
    footer {
        margin-top: 20px;
        font-size: 0.8rem;
    }
}