/* color-picker.css */
:root {
  --bg-page: #F8FAFC;
  --bg-hero-start: #F0FDFA;
  --bg-hero-end: #F1F5F9;
  --bg-card: #FFFFFF;
  --primary-accent: #0D9488;
  --primary-accent-light: #CCFBF1;
  --text-dark: #1E293B;
  --text-medium: #475569;
  --text-light: #94A3B8;
  --border-color: #E2E8F0;
  --error-bg: #FEF2F2;
  --error-text: #DC2626;
  --warning-bg: #FFFBEB;
  --warning-text: #B45309;
  --success-bg: #ECFDF5;
  --success-text: #065F46;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-page);
  color: var(--text-medium);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  color: var(--text-dark);
  line-height: 1.2;
  font-weight: 600;
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

h2.section-title {
  font-size: clamp(1.25rem, 4vw, 1.5rem);
  margin-bottom: 1.25rem;
}

h3.subsection-title {
  font-size: clamp(1rem, 3vw, 1.1rem);
  margin-bottom: 0.75rem;
}

/* Navigation */
.navbar {
  background-color: var(--bg-card);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem clamp(0.75rem, 3vw, 1rem);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo {
  height: 32px;
  width: auto;
}

.brand-name {
  font-weight: 700;
  color: var(--text-dark);
  font-size: 1.1rem;
}

/* Navigation Toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  gap: 0.25rem;
  z-index: 1002;
}

.nav-toggle:focus {
  outline: none;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-dark);
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Navigation Slider */
.nav-slider {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background-color: var(--bg-card);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  transition: right 0.3s ease-in-out;
  z-index: 1001;
  overflow-y: auto;
}

.nav-slider.active {
  right: 0;
}

.slider-content {
  padding: 1.5rem;
  height: 100%;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.slider-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-dark);
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1002;
}

.slider-close:focus {
  outline: none;
}

.slider-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slider-link {
  display: block;
  padding: 1rem;
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  border-radius: 0.5rem;
  transition: all 0.2s;
}

.slider-link:hover, .slider-link.active {
  background-color: var(--primary-accent-light);
  color: var(--primary-accent);
}

.slider-link:focus {
  outline: none;
}

/* Overlay when slider is open */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 1000;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--bg-hero-start), var(--bg-hero-end));
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2rem);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.hero-text p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-medium);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.cta-button {
  display: inline-block;
  background-color: var(--primary-accent);
  color: white;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(13, 148, 136, 0.2);
}

.cta-button:hover {
  background-color: #0f766e;
  transform: translateY(-2px);
  box-shadow: 0 8px 15px rgba(13, 148, 136, 0.3);
  color: white;
  text-decoration: none;
}

/* Content Sections */
.content-section {
  padding: clamp(2rem, 6vw, 4rem) clamp(1rem, 4vw, 2rem);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-subtitle {
  color: var(--text-medium);
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  margin-bottom: 2rem;
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Card Styling */
.card {
  background-color: var(--bg-card);
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.main-card {
  padding: 2rem;
  margin-bottom: 2rem;
}

.centered-form-container {
  max-width: 800px;
  margin: 0 auto;
}

.form-section {
  padding: 1rem;
}

.input-help {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: 0.25rem;
  margin-bottom: 1rem;
}

/* Message Boxes */
.message-box {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  border: 1px solid;
}

.error-box {
  background-color: var(--error-bg);
  border-color: #fca5a5;
  color: var(--error-text);
}

.success-box {
  background-color: var(--success-bg);
  border-color: #86efac;
  color: var(--success-text);
}

.message-content h4 {
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.message-content p {
  font-size: 0.9rem;
  margin: 0;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0;
}

.tab {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-medium);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: -2px;
}

.tab.active {
  color: var(--primary-accent);
  border-bottom-color: var(--primary-accent);
}

.tab:hover:not(.active) {
  color: var(--text-dark);
  background-color: var(--bg-page);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Color Picker Specific Styles */
.picker-container {
  padding: clamp(2rem, 6vw, 4rem) 1rem;
}

.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 1rem;
  padding: 3rem 2rem;
  text-align: center;
  background-color: var(--bg-page);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
}

.upload-area:hover, .upload-area.dragover {
  border-color: var(--primary-accent);
  background-color: var(--primary-accent-light);
}

.upload-icon {
  font-size: 3rem;
  color: var(--primary-accent);
  margin-bottom: 1rem;
}

.upload-text {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.upload-hint {
  font-size: 0.9rem;
  color: var(--text-medium);
  margin-bottom: 1.5rem;
}

.upload-btn {
  background-color: var(--primary-accent);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.upload-btn:hover {
  background-color: #0f766e;
  transform: translateY(-1px);
}

#fileInput {
  display: none;
}

.image-preview {
  margin-top: 1.5rem;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

#imageCanvas {
  max-width: 100%;
  height: auto;
  display: block;
  cursor: crosshair;
}

.canvas-instructions {
  text-align: center;
  padding: 1rem;
  background-color: var(--bg-page);
  color: var(--text-medium);
  font-size: 0.9rem;
}

/* Manual Picker Styles */
.manual-picker-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.color-sliders {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.slider-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slider-container label {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.9rem;
}

.slider-container input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #e2e8f0;
  outline: none;
  -webkit-appearance: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-accent);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider-container input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-accent);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-light);
}

.color-wheel-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

#colorWheel {
  border-radius: 50%;
  cursor: crosshair;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Color Values Display */
.color-values-section {
  margin-top: 2rem;
  padding: 1.5rem;
  background-color: var(--bg-page);
  border-radius: 0.75rem;
}

.color-preview-container {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: center;
}

.color-preview {
  width: 100px;
  height: 100px;
  border-radius: 0.75rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border: 2px solid var(--border-color);
}

.color-values {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.value-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.value-group label {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.9rem;
}

.value-group input {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-family: 'Courier New', monospace;
  background-color: var(--bg-card);
  color: var(--text-dark);
}

.hex-input {
  display: flex;
  gap: 0.5rem;
}

.hex-input input {
  flex: 1;
}

.copy-btn {
  background-color: var(--primary-accent);
  color: white;
  border: none;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.copy-btn:hover {
  background-color: #0f766e;
  transform: translateY(-1px);
}

/* Color History */
.color-history-section {
  margin-top: 2rem;
}

.color-history-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
  min-height: 80px;
}

.color-history-item {
  width: 60px;
  height: 60px;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: transform 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: relative;
}

.color-history-item:hover {
  transform: scale(1.1);
}

.no-history {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text-light);
  font-style: italic;
  padding: 2rem;
}

.action-button {
  background-color: transparent;
  color: var(--text-medium);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.action-button:hover {
  background-color: var(--bg-page);
  border-color: var(--text-light);
}

.action-button.secondary {
  border-color: var(--border-color);
  color: var(--text-medium);
}

/* Privacy Notice */
.privacy-notice {
  margin-top: 2rem;
  padding: 1.5rem;
  background-color: var(--bg-page);
  border-radius: 0.75rem;
  border-left: 4px solid var(--primary-accent);
}

.privacy-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
}

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

.privacy-text {
  font-size: 0.9rem;
  color: var(--text-medium);
  line-height: 1.6;
}

/* Overview Grid */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.overview-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.overview-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.overview-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary-accent);
  font-size: 1.5rem;
}

.overview-card h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.overview-card p {
  color: var(--text-medium);
  line-height: 1.6;
}

/* How To Section */
.how-to-section {
  background-color: var(--bg-page);
}

.how-to-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.how-to-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.how-to-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary-accent);
  font-size: 1.5rem;
}

.how-to-card h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.how-to-card p {
  color: var(--text-medium);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.quick-tip {
  background-color: var(--primary-accent-light);
  padding: 1rem;
  border-radius: 0.5rem;
  margin: 1rem 0;
  border-left: 4px solid var(--primary-accent);
}

.quick-tip strong {
  color: var(--primary-accent);
}

/* Related Tools Section */
.related-tools-section {
  padding: clamp(2rem, 6vw, 4rem) clamp(1rem, 4vw, 2rem);
  background-color: var(--bg-page);
}

.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.related-tool-card {
  background-color: var(--bg-card);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.related-tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.related-tool-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--primary-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--primary-accent);
  font-size: 1.5rem;
}

.related-tool-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.related-tool-card p {
  font-size: 0.9rem;
  color: var(--text-medium);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.related-tool-button {
  display: inline-block;
  background-color: var(--primary-accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.related-tool-button:hover {
  background-color: #0f766e;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(13, 148, 136, 0.4);
  color: white;
  text-decoration: none;
}

.related-tool-button:focus {
  outline: none;
  text-decoration: none;
  color: white;
}

/* Use Cases Section */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.usecase-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.usecase-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.usecase-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary-accent);
  font-size: 1.5rem;
}

.usecase-card h3 {
  color: var(--text-dark);
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
}

.problem-solution {
  margin-bottom: 1.5rem;
}

.problem-solution h4 {
  color: var(--primary-accent);
  font-size: 1rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.problem-solution p {
  color: var(--text-medium);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.pro-tip {
  background-color: var(--warning-bg);
  padding: 1rem;
  border-radius: 0.5rem;
  margin: 1rem 0;
  border-left: 4px solid var(--warning-text);
}

.pro-tip strong {
  color: var(--warning-text);
}

.benefits {
  background-color: var(--bg-page);
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
}

.benefits p {
  color: var(--text-medium);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.benefits p strong {
  color: var(--text-dark);
}

/* Tips Section */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.tip-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.tip-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.tip-number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary-accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.tip-card h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.tip-card p {
  color: var(--text-medium);
  line-height: 1.6;
}

/* Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.advantage-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--primary-accent);
  font-size: 1.5rem;
}

.advantage-card h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.advantage-card p {
  color: var(--text-medium);
  line-height: 1.6;
}

/* Stories Grid */
.stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.story-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.story-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.story-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.story-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-accent);
  font-size: 1.2rem;
}

.story-meta h4 {
  color: var(--text-dark);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.story-meta p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin: 0;
}

.story-content p {
  color: var(--text-medium);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.story-results {
  background-color: var(--success-bg);
  padding: 1rem;
  border-radius: 0.5rem;
  border-left: 4px solid var(--success-text);
}

.story-results p {
  color: var(--success-text);
  margin: 0;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Technical Content */
.technical-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.technical-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.technical-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.technical-card h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.technical-card p {
  color: var(--text-medium);
  line-height: 1.6;
}

/* FAQ Grid */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.faq-item {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.faq-item h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.faq-item p {
  color: var(--text-medium);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.faq-item p:last-child {
  margin-bottom: 0;
}

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

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-content p {
  color: var(--text-medium);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-medium);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.disclaimer {
  font-size: 0.85rem;
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.5;
}

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

.animate-on-load {
  animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
  .manual-picker-container {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .color-preview-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .color-preview {
    margin: 0 auto;
  }
  
  .how-to-grid {
    grid-template-columns: 1fr;
  }
  
  .overview-grid {
    grid-template-columns: 1fr;
  }
  
  .related-tools-grid {
    grid-template-columns: 1fr;
  }
  
  .tabs {
    flex-direction: column;
  }
  
  .tab {
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
  }
  
  .tab.active {
    background-color: var(--primary-accent-light);
    border-bottom-color: var(--border-color);
  }
}

@media (max-width: 480px) {
  .slider-container input[type="range"] {
    height: 4px;
  }
  
  .slider-container input[type="range"]::-webkit-slider-thumb {
    width: 16px;
    height: 16px;
  }
  
  .slider-container input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
  }
  
  .color-preview {
    width: 80px;
    height: 80px;
  }
  
  .upload-area {
    padding: 2rem 1rem;
  }
  
  .upload-icon {
    font-size: 2rem;
  }
  
  .upload-text {
    font-size: 1rem;
  }
}