/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Theme Colors */
  --cream-white: #fff8f0;
  --blue: #0066ff;
  --green: #00cc66;
  --red: #ff3333;
  --black: #000000;
  --purple: #9933ff;
  --pink: #ff3399;
  --yellow: #ffcc00;

  /* Grays */
  --gray-dark: #1a1a1a;
  --gray-medium: #666666;
  --gray-light: #e0e0e0;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;

  /* Shadows */
  --shadow-brutal: 8px 8px 0 var(--black);
  --shadow-brutal-hover: 12px 12px 0 var(--black);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Arial", sans-serif;
  background-color: var(--cream-white);
  color: var(--black);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-md);
}

/* Header Styles */
.header {
  background: var(--black);
  border-bottom: 6px solid var(--yellow);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: inherit;
  transition: opacity 0.3s ease;
}

.logo-link:hover {
  opacity: 0.9;
}

.logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  border: 3px solid var(--yellow);
  background: var(--cream-white);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.logo-text {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--cream-white);
  letter-spacing: -0.5px;
}

.logo-text strong {
  color: var(--yellow);
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--cream-white);
  text-decoration: none;
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 1px;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 3px solid transparent;
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
}

.nav-link:hover {
  border-color: var(--yellow);
  background: var(--yellow);
  color: var(--black);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 30px;
  height: 3px;
  background: var(--cream-white);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Layout */
.layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

/* Hero Section */
.hero {
  background: var(--blue);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: 6px solid var(--black);
  box-shadow: var(--shadow-brutal);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: 5rem;
  font-weight: 900;
  line-height: 0.9;
  color: var(--cream-white);
  margin-bottom: var(--spacing-md);
  letter-spacing: -3px;
}

.title-line {
  display: block;
  animation: slideInLeft 0.6s ease-out backwards;
}

.title-line:nth-child(2) {
  animation-delay: 0.2s;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--yellow);
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
}

.hero-tags {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.tag {
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius);
  border: 3px solid var(--black);
  font-weight: 900;
  font-size: 0.875rem;
  letter-spacing: 1px;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

.tag-blue {
  background: var(--cream-white);
  color: var(--blue);
  animation-delay: 0s;
}

.tag-green {
  background: var(--cream-white);
  color: var(--green);
  animation-delay: 0.2s;
}

.tag-red {
  background: var(--cream-white);
  color: var(--red);
  animation-delay: 0.4s;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 120px;
  height: fit-content;
}

.sidebar-content {
  background: var(--cream-white);
  border: 5px solid var(--black);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-brutal);
}

.sidebar-section {
  margin-bottom: var(--spacing-lg);
}

.sidebar-section:last-child {
  margin-bottom: 0;
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
  color: var(--black);
  border-bottom: 3px solid var(--yellow);
  padding-bottom: var(--spacing-xs);
}

.sidebar-menu {
  list-style: none;
}

.sidebar-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--black);
  text-decoration: none;
  font-weight: 700;
  border-left: 4px solid transparent;
  transition: all 0.3s ease;
  margin-bottom: var(--spacing-xs);
}

.sidebar-link:hover {
  border-left-color: var(--blue);
  background: var(--blue);
  color: var(--cream-white);
  transform: translateX(5px);
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.category-tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--black);
  color: var(--cream-white);
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  cursor: pointer;
  border: 2px solid var(--black);
  transition: all 0.3s ease;
}

.category-tag:hover {
  background: var(--cream-white);
  color: var(--black);
  transform: scale(1.05);
}

.promo {
  margin-top: var(--spacing-lg);
}

.promo-box {
  background: var(--green);
  padding: var(--spacing-md);
  border-radius: var(--radius);
  border: 4px solid var(--black);
  text-align: center;
}

.promo-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--cream-white);
  margin-bottom: var(--spacing-xs);
}

.promo-text {
  font-size: 0.875rem;
  color: var(--cream-white);
  font-weight: 600;
}

/* Tools Section */
.tools-section {
  animation: fadeIn 1s ease-out;
}

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

.section-title {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -1px;
}

.title-accent {
  color: var(--red);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.tool-card {
  background: var(--cream-white);
  border: 5px solid var(--black);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-decoration: none;
  color: var(--black);
  box-shadow: var(--shadow-brutal);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  animation: cardAppear 0.6s ease-out backwards;
}

.tool-card:nth-child(1) {
  animation-delay: 0.05s;
}
.tool-card:nth-child(2) {
  animation-delay: 0.1s;
}
.tool-card:nth-child(3) {
  animation-delay: 0.15s;
}
.tool-card:nth-child(4) {
  animation-delay: 0.2s;
}
.tool-card:nth-child(5) {
  animation-delay: 0.25s;
}
.tool-card:nth-child(6) {
  animation-delay: 0.3s;
}

@keyframes cardAppear {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.tool-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-brutal-hover);
}

.tool-card[data-color="blue"]:hover {
  border-color: var(--blue);
}

.tool-card[data-color="green"]:hover {
  border-color: var(--green);
}

.tool-card[data-color="purple"]:hover {
  border-color: var(--purple);
}

.tool-card[data-color="pink"]:hover {
  border-color: var(--pink);
}

.tool-card[data-color="red"]:hover {
  border-color: var(--red);
}

.tool-card[data-color="yellow"]:hover {
  border-color: var(--yellow);
}

.tool-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-10px) rotate(5deg);
  }
}

.tool-title {
  font-size: 1.25rem;
  font-weight: 900;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.5px;
}

.tool-description {
  font-size: 0.875rem;
  color: var(--gray-medium);
  font-weight: 600;
  line-height: 1.5;
}

.tool-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: var(--red);
  color: var(--cream-white);
  padding: 4px 12px;
  border-radius: var(--radius);
  font-size: 0.625rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  border: 2px solid var(--black);
}

.tool-card[data-color="blue"] .tool-badge {
  background: var(--blue);
}

.tool-card[data-color="green"] .tool-badge {
  background: var(--green);
}

.tool-card[data-color="pink"] .tool-badge {
  background: var(--pink);
}

/* Footer */
.footer {
  background: var(--black);
  color: var(--cream-white);
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  border-top: 6px solid var(--yellow);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-widget {
  animation: fadeInUp 0.8s ease-out backwards;
}

.footer-widget:nth-child(1) {
  animation-delay: 0.1s;
}
.footer-widget:nth-child(2) {
  animation-delay: 0.2s;
}
.footer-widget:nth-child(3) {
  animation-delay: 0.3s;
}
.footer-widget:nth-child(4) {
  animation-delay: 0.4s;
}

.widget-title {
  font-size: 1.125rem;
  font-weight: 900;
  margin-bottom: var(--spacing-md);
  color: var(--yellow);
  letter-spacing: 1px;
  border-bottom: 3px solid var(--yellow);
  padding-bottom: var(--spacing-xs);
}

.widget-text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--gray-light);
  margin-bottom: var(--spacing-md);
}

.footer-badge {
  display: inline-block;
  background: var(--green);
  color: var(--cream-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius);
  border: 3px solid var(--cream-white);
  font-weight: 900;
  font-size: 0.875rem;
  letter-spacing: 1px;
}

.widget-links {
  list-style: none;
}

.widget-links li {
  margin-bottom: var(--spacing-xs);
}

.widget-links a {
  color: var(--gray-light);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-block;
}

.widget-links a:hover {
  color: var(--yellow);
  transform: translateX(5px);
}

.popular-tools a {
  font-size: 0.9375rem;
}

.github-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--cream-white);
  color: var(--black);
  padding: var(--spacing-md);
  border-radius: var(--radius);
  text-decoration: none;
  border: 4px solid var(--cream-white);
  transition: all 0.3s ease;
  font-weight: 900;
}

.github-link:hover {
  background: var(--black);
  color: var(--cream-white);
  border-color: var(--yellow);
  transform: scale(1.05);
}

.github-icon {
  width: 48px;
  height: 48px;
}

.github-text {
  letter-spacing: 1px;
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md) 0;
  border-top: 3px solid var(--gray-dark);
  text-align: center;
}

.copyright,
.made-with {
  font-size: 0.875rem;
  color: var(--gray-light);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

.heart {
  color: var(--red);
  animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .layout {
    display: flex;
    flex-direction: column;
  }

  .layout .sidebar {
    position: static;
    margin-bottom: var(--spacing-lg);
    order: 2;
  }

  .layout .main-content {
    order: 1;
  }

  .hero-title {
    font-size: 4rem;
  }

  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 3rem;
  }

  .section-title {
    font-size: 2.5rem;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-lg);
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .logo-text {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 2rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Adding styles for tool pages */

/* Container Layout for Tool Pages */
.container-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-md);
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--spacing-lg);
}

.main-content {
  min-width: 0;
}

/* Tool Header */
.tool-header {
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.8s ease-out;
}

.page-title {
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -2px;
  line-height: 1;
  color: var(--black);
}

.page-subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-medium);
  letter-spacing: 0.5px;
}

/* Tool Interface */
.tool-interface {
  background: var(--cream-white);
  border: 6px solid var(--black);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-brutal);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.8s ease-out;
}

.tool-controls {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 4px solid var(--gray-light);
}

.control-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.control-group label {
  font-weight: 900;
  font-size: 0.875rem;
  letter-spacing: 0.5px;
}

.select-input {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 3px solid var(--black);
  border-radius: var(--radius-sm);
  background: var(--cream-white);
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.select-input:hover {
  background: var(--yellow);
}

.text-input {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 3px solid var(--black);
  border-radius: var(--radius-sm);
  background: var(--cream-white);
  font-weight: 700;
  font-size: 0.875rem;
  min-width: 200px;
}

.checkbox-input {
  width: 20px;
  height: 20px;
  border: 3px solid var(--black);
  cursor: pointer;
}

.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 4px solid var(--black);
  border-radius: var(--radius);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 4px 4px 0 var(--black);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--black);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--black);
}

.btn-primary {
  background: var(--blue);
  color: var(--cream-white);
}

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

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 3px solid var(--black);
  border-radius: var(--radius-sm);
  background: var(--cream-white);
  font-weight: 900;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-small:hover {
  background: var(--green);
  color: var(--cream-white);
  transform: scale(1.05);
}

.btn-group {
  display: flex;
  gap: var(--spacing-xs);
}

/* IO Container */
.io-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.input-section,
.output-section {
  display: flex;
  flex-direction: column;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 3px solid var(--black);
}

.section-header h3 {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 1px;
}

textarea {
  width: 100%;
  min-height: 300px;
  padding: var(--spacing-md);
  border: 4px solid var(--black);
  border-radius: var(--radius);
  font-family: "Courier New", monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  resize: vertical;
  background: var(--cream-white);
  transition: all 0.3s ease;
}

textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.2);
}

/* Single Input Layout */
.single-input-layout {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Error Message */
.error-message {
  padding: var(--spacing-md);
  border: 4px solid var(--red);
  border-radius: var(--radius);
  background: #ffe6e6;
  color: var(--red);
  font-weight: 700;
  margin-top: var(--spacing-md);
}

/* Stats Panel */
.stats-panel {
  display: flex;
  justify-content: space-around;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--gray-light);
  border: 4px solid var(--black);
  border-radius: var(--radius);
  margin-top: var(--spacing-md);
}

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

.stat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-xs);
  color: var(--gray-medium);
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--blue);
}

/* Validation Result */
.validation-result {
  padding: var(--spacing-lg);
  border: 5px solid var(--black);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-lg);
}

.validation-result.success {
  background: #d4f4dd;
  border-color: var(--green);
}

.validation-result.error {
  background: #ffe6e6;
  border-color: var(--red);
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 3px solid var(--black);
}

.result-header h3 {
  font-size: 1.5rem;
  font-weight: 900;
}

.result-icon {
  font-size: 2rem;
  font-weight: 900;
}

.result-details {
  font-size: 0.875rem;
  line-height: 1.8;
}

.result-details p {
  margin-bottom: var(--spacing-sm);
}

.result-details strong {
  font-weight: 900;
  color: var(--black);
}

.result-details pre {
  background: var(--cream-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  border: 3px solid var(--black);
  overflow-x: auto;
  margin: var(--spacing-sm) 0;
}

/* Info Panel */
.info-panel {
  padding: var(--spacing-lg);
  background: var(--yellow);
  border: 4px solid var(--black);
  border-radius: var(--radius);
  margin-top: var(--spacing-lg);
}

.info-panel h3 {
  font-size: 1.125rem;
  font-weight: 900;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.5px;
}

.entities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-sm);
}

.entity-item {
  background: var(--cream-white);
  padding: var(--spacing-sm);
  border: 3px solid var(--black);
  border-radius: var(--radius-sm);
  text-align: center;
  font-weight: 700;
  font-size: 0.875rem;
}

.entity-item code {
  background: transparent;
  padding: 0;
  border: none;
  font-weight: 900;
  color: var(--red);
}

/* Content Sections */
.content-section {
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.8s ease-out;
}

.content-section .section-title {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -1px;
  padding-bottom: var(--spacing-sm);
  border-bottom: 5px solid var(--black);
}

/* Steps Container */
.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.step-card {
  background: var(--cream-white);
  border: 5px solid var(--black);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 6px 6px 0 var(--black);
  transition: all 0.3s ease;
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: 8px 8px 0 var(--black);
}

.step-number {
  display: inline-block;
  width: 48px;
  height: 48px;
  background: var(--blue);
  color: var(--cream-white);
  border-radius: 50%;
  border: 4px solid var(--black);
  font-size: 1.5rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.step-card h3 {
  font-size: 1.25rem;
  font-weight: 900;
  margin-bottom: var(--spacing-sm);
}

.step-card p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--gray-medium);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.feature-card {
  background: var(--cream-white);
  border: 5px solid var(--black);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 6px 6px 0 var(--black);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 8px 8px 0 var(--black);
  border-color: var(--green);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 900;
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--gray-medium);
}

/* Description Content */
.description-content {
  line-height: 1.8;
  color: var(--gray-dark);
}

.description-content p {
  margin-bottom: var(--spacing-lg);
  font-size: 1rem;
}

.description-content h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--black);
}

.description-content code {
  background: var(--yellow);
  padding: 2px 8px;
  border-radius: 4px;
  border: 2px solid var(--black);
  font-family: "Courier New", monospace;
  font-weight: 700;
}

/* Responsive for Tool Pages */
@media (max-width: 1024px) {
  .container-layout {
    display: flex;
    flex-direction: column;
  }

  .container-layout .sidebar {
    order: 2;
  }

  .container-layout .main-content {
    order: 1;
  }

  .io-container {
    grid-template-columns: 1fr;
  }

  .page-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .tool-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .btn,
  .control-group {
    width: 100%;
  }

  .steps-container,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .stats-panel {
    flex-direction: column;
  }
}