/* Color Picker - Modern Slick Design */

/* ===============================================
   MODERN TOOL HEADER DESIGN
   =============================================== */
.tool-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 3rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--info-color) 100%);
    border-radius: var(--radius-xl);
    color: white;
    position: relative;
    overflow: hidden;
}

.tool-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.tool-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    position: relative;
    z-index: 1;
}

.tool-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* ===============================================
   MODERN SECTION CONTAINERS
   =============================================== */
.picker-section,
.formats-section,
.quick-colors-section,
.harmony-section,
.gradient-section {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.picker-section::before,
.formats-section::before,
.quick-colors-section::before,
.harmony-section::before,
.gradient-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color), var(--success-color));
}

.picker-section:hover,
.formats-section:hover,
.quick-colors-section:hover,
.harmony-section:hover,
.gradient-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-hover);
}

.color-main {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Section Headers */
.picker-section h2,
.formats-section h2,
.quick-colors-section h2,
.harmony-section h2,
.gradient-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.picker-section h2 i,
.formats-section h2 i,
.quick-colors-section h2 i,
.harmony-section h2 i,
.gradient-section h2 i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* ===============================================
   COLOR PICKER VISUAL COMPONENTS
   =============================================== */
.picker-container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: start;
}

.visual-picker {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.color-canvas-container,
.hue-slider-container,
.alpha-slider-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.color-canvas-container:hover,
.hue-slider-container:hover,
.alpha-slider-container:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.color-canvas,
.hue-slider,
.alpha-slider {
    display: block;
    cursor: crosshair;
    border-radius: var(--radius-md);
}

.color-pointer,
.hue-pointer,
.alpha-pointer {
    position: absolute;
    width: 12px;
    height: 12px;
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: var(--transition);
    z-index: 10;
}

.color-pointer {
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.3), var(--shadow-md);
}

.color-preview {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-width: 200px;
}

.preview-box {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.preview-box:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.color-display {
    width: 100%;
    height: 120px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-md);
    background: #ff0000;
    margin-bottom: 1rem;
    transition: var(--transition);
}

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

.color-name {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.color-brightness {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===============================================
   COLOR FORMATS GRID
   =============================================== */
.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.format-group {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.format-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.format-group:hover::before {
    left: 100%;
}

.format-group:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.format-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-with-copy {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.25rem;
    transition: var(--transition);
    align-items: stretch;
}

.input-with-copy:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.format-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.875rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.format-input:focus {
    outline: none;
}

.format-input::placeholder {
    color: var(--text-muted);
}

.rgb-inputs,
.hsl-inputs,
.hsv-inputs,
.cmyk-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto;
    gap: 0.5rem;
    align-items: center;
}

.cmyk-inputs {
    grid-template-columns: 1fr 1fr 1fr 1fr auto;
}

.rgb-input,
.hsl-input,
.hsv-input,
.cmyk-input {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    transition: var(--transition);
    min-width: 0;
}

.rgb-input:focus,
.hsl-input:focus,
.hsv-input:focus,
.cmyk-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.copy-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    width: 44px;
    height: auto;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.copy-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.copy-btn:hover::before {
    left: 100%;
}

.copy-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* ===============================================
   QUICK COLORS SECTION
   =============================================== */
.quick-colors-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.color-categories {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.category-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.category-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.category-btn:hover::before {
    left: 100%;
}

.category-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.category-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-lg);
}

.colors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 0.75rem;
    max-height: 200px;
    overflow-y: auto;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
}

.color-swatch {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
    border-color: var(--text-primary);
    z-index: 10;
}

.color-swatch:active {
    transform: scale(0.95);
}

/* ===============================================
   HARMONY SECTION
   =============================================== */
.harmony-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.harmony-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.harmony-type {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.harmony-label {
    font-weight: 600;
    color: var(--text-primary);
}

.harmony-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    min-width: 180px;
}

.harmony-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
}

.harmony-result {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    min-height: 80px;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
}

.harmony-color {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.harmony-color:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.harmony-color-swatch {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.harmony-color-code {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
}

/* ===============================================
   GRADIENT SECTION
   =============================================== */
.gradient-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.gradient-controls {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: center;
}

.gradient-colors {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.gradient-color {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.gradient-color label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.gradient-input {
    width: 60px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

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

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

.gradient-direction label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.gradient-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    min-width: 160px;
}

.gradient-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.gradient-preview {
    height: 120px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    background: linear-gradient(to right, #FF6B6B, #4ECDC4);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.gradient-preview:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.gradient-css {
    margin-top: 1rem;
}

/* ===============================================
   SEO CONTENT SECTIONS
   =============================================== */
.seo-content {
    margin-top: 4rem;
}

.seo-content section {
    padding: 4rem 0;
    margin-bottom: 2rem;
}

.seo-content section:nth-child(even) {
    background: var(--bg-secondary);
}

.seo-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 3rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.seo-content h2 i {
    color: var(--primary-color);
    font-size: 2rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.step-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color));
}

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

.step-number {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.step-number::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.benefit-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--success-color), var(--info-color));
}

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

.benefit-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    color: white;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.1);
}

.benefit-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

.features-container {
    margin: 2rem 0;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.feature-item i {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.use-case-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.use-case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--warning-color), var(--success-color));
}

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

.use-case-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--warning-color), var(--success-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    color: white;
    transition: var(--transition);
}

.use-case-card:hover .use-case-icon {
    transform: scale(1.1);
}

.use-case-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.use-case-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 2rem auto;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    padding: 1.5rem;
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question h4 {
    margin: 0;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition);
    font-size: 0.875rem;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */
@media (max-width: 1024px) {
    .steps-grid,
    .benefits-grid,
    .features-list,
    .use-cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .features-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .tool-header {
        padding: 2rem 0;
        margin-bottom: 2rem;
    }

    .tool-header h1 {
        font-size: 2.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .tool-header p {
        font-size: 1rem;
    }

    .picker-section,
    .formats-section,
    .quick-colors-section,
    .harmony-section,
    .gradient-section {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .seo-content h2 {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .picker-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .formats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .format-group {
        padding: 1rem;
    }

    .input-with-copy {
        padding: 0.125rem;
        gap: 0.25rem;
    }

    .format-input {
        padding: 0.75rem;
        font-size: 0.875rem;
    }

    .copy-btn {
        min-width: 40px;
        width: 40px;
        padding: 0.75rem 0.5rem;
    }

    .rgb-inputs,
    .hsl-inputs,
    .hsv-inputs {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 0.5rem;
    }

    .cmyk-inputs {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }

    .rgb-inputs .copy-btn,
    .hsl-inputs .copy-btn,
    .hsv-inputs .copy-btn,
    .cmyk-inputs .copy-btn {
        grid-column: 1 / -1;
        margin-top: 0.5rem;
        width: 100%;
        min-width: auto;
    }

    .rgb-input,
    .hsl-input,
    .hsv-input,
    .cmyk-input {
        padding: 0.5rem;
        font-size: 0.75rem;
    }

    .harmony-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .gradient-controls {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .steps-grid,
    .benefits-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-item,
    .step-card,
    .benefit-card,
    .use-case-card {
        padding: 1.5rem;
    }

    .feature-item i,
    .step-number,
    .benefit-icon,
    .use-case-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }

    .faq-question {
        padding: 1rem;
    }

    .faq-answer {
        max-height: none;
    }

    .faq-item.active .faq-answer {
        max-height: none;
    }
}

@media (max-width: 480px) {
    .tool-header {
        padding: 1.5rem 0;
    }

    .tool-header h1 {
        font-size: 2rem;
    }

    .seo-content h2 {
        font-size: 1.75rem;
    }

    .picker-section,
    .formats-section,
    .quick-colors-section,
    .harmony-section,
    .gradient-section {
        padding: 1rem;
    }

    .color-canvas {
        width: 250px;
        height: 250px;
    }

    .hue-slider,
    .alpha-slider {
        width: 250px;
    }

    .step-card,
    .benefit-card,
    .use-case-card {
        padding: 1rem;
    }

    .step-number,
    .benefit-icon,
    .use-case-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }

    .feature-item i {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }
}