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

body {
    font-family: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    min-height: 100vh;
    direction: rtl;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header Styles - Enhanced */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 35px;
    width: auto;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    padding: 20px;
    min-width: 600px;
    max-height: 70vh;
    overflow-y: auto;
    z-index: 9999;
}

.nav.show {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.nav-section h3 {
    color: #495057;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-section ul {
    list-style: none;
}

.nav-section li {
    margin-bottom: 0.3rem;
}

.nav-section a {
    text-decoration: none;
    color: #6c757d;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.8rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.nav-section a:hover,
.nav-section a.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: translateX(-2px);
}

.nav-section i {
    font-size: 0.8rem;
    width: 16px;
}

.lang-btn, .menu-btn {
    background: rgba(255,255,255,0.9);
    border: 1px solid rgba(255,255,255,0.3);
    color: #495057;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    backdrop-filter: blur(10px);
}

.lang-btn:hover, .menu-btn:hover {
    background: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.menu-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Main Content - Enhanced Background */
.main {
    padding: 2rem 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    margin: 1rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    color: #6c757d;
}

.breadcrumb a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: #764ba2;
}

.breadcrumb i {
    font-size: 0.7rem;
}

/* Hero Section - Enhanced */
.hero {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-radius: 16px;
    margin: 0 1rem 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.hero-description {
    font-size: 1.1rem;
    color: #6c757d;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Converter Section */
.converter-section {
    margin: 0 1rem 2rem;
}

.converter-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.3);
    overflow: hidden;
    display: grid;
    grid-template-columns: 2fr 1fr;
    min-height: 500px;
}

.input-section {
    padding: 2rem;
    border-left: 1px solid rgba(102, 126, 234, 0.1);
}

.input-header {
    margin-bottom: 2rem;
    text-align: center;
}

.input-header h2 {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 0.5rem;
}

.input-header p {
    color: #6c757d;
    font-size: 0.9rem;
}

.input-methods {
    margin-bottom: 2rem;
}

.color-picker-section {
    margin-bottom: 2rem;
    text-align: center;
}

.color-picker-section label {
    display: block;
    font-weight: 600;
    color: #495057;
    margin-bottom: 1rem;
}

.picker-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

#colorPicker {
    width: 80px;
    height: 80px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

#colorPicker:hover {
    transform: scale(1.05);
}

.picker-label {
    color: #667eea;
    font-weight: 500;
    font-size: 0.9rem;
}

.format-inputs {
    display: grid;
    gap: 1rem;
}

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

.format-group label {
    font-weight: 600;
    color: #495057;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.format-group input {
    flex: 1;
    padding: 0.8rem 3rem 0.8rem 1rem;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 10px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(5px);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
}

.format-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    background: white;
}

.copy-btn {
    position: absolute;
    left: 0.5rem;
    background: transparent;
    border: none;
    color: #6c757d;
    padding: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 6px;
}

.copy-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

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

.convert-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin: 0 auto;
}

.convert-btn:hover {
    background: linear-gradient(135deg, #764ba2, #667eea);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Preview Section */
.preview-section {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.color-preview {
    text-align: center;
    width: 100%;
}

.preview-color {
    width: 200px;
    height: 200px;
    border-radius: 16px;
    margin: 0 auto 1rem;
    border: 3px solid rgba(255,255,255,0.3);
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    background: #3498db;
    transition: all 0.3s ease;
}

.preview-info h3 {
    color: #495057;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.preview-info p {
    color: #6c757d;
    font-size: 0.9rem;
}

/* Results Section */
.results-section {
    margin: 0 1rem 2rem;
}

.results-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.3);
}

.results-header {
    text-align: center;
    margin-bottom: 2rem;
}

.results-header h2 {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 0.5rem;
}

.results-header p {
    color: #6c757d;
    font-size: 0.9rem;
}

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

.result-item {
    background: rgba(102, 126, 234, 0.05);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.result-item:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.result-label {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
    color: #667eea;
    font-weight: 600;
    font-size: 0.9rem;
}

.result-label i {
    font-size: 1.2rem;
}

.result-value {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 1rem;
    color: #495057;
    font-weight: 500;
    word-break: break-all;
}

.result-copy {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: #6c757d;
    opacity: 0;
    transition: opacity 0.2s ease;
    font-size: 0.8rem;
}

.result-item:hover .result-copy {
    opacity: 1;
}

/* Color Analysis */
.color-analysis {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(248, 249, 250, 0.8);
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.color-analysis h3 {
    color: #495057;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.analysis-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem;
    background: white;
    border-radius: 8px;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.analysis-label {
    color: #6c757d;
    font-size: 0.9rem;
}

.analysis-value {
    color: #495057;
    font-weight: 600;
}

/* Export Section */
.export-section {
    text-align: center;
}

.export-section h3 {
    color: #495057;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.export-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.export-btn {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.export-btn:hover {
    background: linear-gradient(135deg, #218838, #1ea080);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

/* Palette Section */
.palette-section {
    margin: 0 1rem 2rem;
}

.palette-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.3);
}

.palette-header {
    text-align: center;
    margin-bottom: 2rem;
}

.palette-header h2 {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.3rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.palette-header p {
    color: #6c757d;
    font-size: 0.9rem;
}

.palette-types {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.palette-btn {
    background: rgba(255,255,255,0.8);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: #667eea;
    padding: 0.8rem 1.2rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    white-space: nowrap;
    font-weight: 500;
}

.palette-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: #667eea;
}

.palette-btn.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.palette-result {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
    min-height: 120px;
    align-items: center;
}

.palette-color {
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.palette-color:hover {
    transform: translateY(-4px);
}

.palette-color-preview {
    height: 80px;
    width: 100%;
    border-radius: 10px;
    margin-bottom: 0.5rem;
    border: 2px solid rgba(255,255,255,0.3);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.palette-color-info {
    font-size: 0.8rem;
    color: #6c757d;
    font-family: monospace;
}

/* Quick Conversion */
.quick-conversion {
    margin: 0 1rem 2rem;
}

.quick-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.3);
    text-align: center;
}

.quick-card h2 {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.3rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.quick-card p {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.quick-colors {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
}

.quick-color {
    height: 80px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255,255,255,0.3);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: end;
    padding: 0.5rem;
}

.quick-color:hover {
    transform: scale(1.05) translateY(-2px);
    border-color: rgba(102, 126, 234, 0.5);
}

.quick-hex {
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-family: monospace;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.quick-color:hover .quick-hex {
    opacity: 1;
}

/* Info Section - Enhanced */
.info-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 0 1rem 2rem;
}

.info-section .info-card,
.about-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.3);
}

.info-section .info-card h2,
.about-card h2 {
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.info-section .info-card p,
.about-card p {
    color: #6c757d;
    line-height: 1.8;
    font-size: 0.95rem;
}

/* Formats Guide */
.formats-guide {
    margin: 0 1rem 2rem;
}

.formats-guide h2 {
    text-align: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    font-weight: 700;
}

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

.format-card {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.3);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.format-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

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

.format-header i {
    font-size: 2rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.format-header h3 {
    color: #495057;
    font-size: 1.2rem;
    font-weight: 600;
}

.format-card p {
    color: #6c757d;
    line-height: 1.6;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.format-card p strong {
    color: #495057;
    font-weight: 600;
}

/* Popular Tools - Enhanced */
.popular-tools {
    margin: 0 1rem 2rem;
}

.popular-tools h2 {
    text-align: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    font-weight: 700;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    color: #6c757d;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.3);
}

.tool-card:hover,
.tool-card.active {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    color: #667eea;
    border-color: rgba(102, 126, 234, 0.3);
}

.tool-card i {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-card span {
    display: block;
    font-weight: 500;
    font-size: 0.95rem;
}

/* Footer - Enhanced */
.footer {
    background: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    padding: 2rem 0 1rem;
    margin: 2rem 1rem 0;
    border-radius: 16px 16px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1rem;
    font-weight: 600;
}

.footer-logo {
    height: 35px;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #6c757d;
    font-size: 0.9rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
    text-align: center;
    line-height: 40px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.social-links a:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul a {
    color: #6c757d;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.footer-section ul a:hover {
    color: #667eea;
    padding-right: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    color: #6c757d;
    font-size: 0.85rem;
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.3s ease-in;
}

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

/* Copy success animation */
@keyframes copySuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.copy-success {
    animation: copySuccess 0.3s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main {
        margin: 0.5rem;
        border-radius: 16px;
        padding: 1rem 0;
    }

    .hero {
        margin: 0 0.5rem 1.5rem;
        padding: 1.5rem 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .converter-card {
        grid-template-columns: 1fr;
    }

    .preview-section {
        order: -1;
    }

    .preview-color {
        width: 150px;
        height: 150px;
    }

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

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

    .export-actions {
        flex-direction: column;
        align-items: center;
    }

    .palette-types {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .info-section {
        grid-template-columns: 1fr;
    }

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

    .tools-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .converter-card,
    .results-card,
    .palette-card,
    .quick-card {
        padding: 1.2rem;
    }

    .preview-color {
        width: 120px;
        height: 120px;
    }

    .format-group input {
        padding: 0.6rem 2.5rem 0.6rem 0.8rem;
    }

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

    .palette-types {
        grid-template-columns: 1fr;
    }

    .export-actions {
        gap: 0.8rem;
    }

    .export-btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
    }
}

/* Additional utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-muted { color: #6c757d; }
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}