/* Global Styles */
:root {
    --primary-color: #ff533d;
    --text-color: #333;
    --bg-color: #f5f5f5;
    --card-bg: #fff;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #4caf50;
}

.dark-mode {
    --text-color: #f5f5f5;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --border-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.header-content h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.theme-toggle button {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.theme-toggle button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Main Content Styles */
main {
    padding: 2rem;
}

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

h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
    text-align: center;
}

.welcome-text {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Tabs Styles */
.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.8rem 1.5rem;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    color: var(--text-color);
    cursor: pointer;
    position: relative;
    transition: color 0.3s;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    font-weight: 500;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
}

.tab-content {
    margin-top: 2rem;
}

.tab-pane {
    display: none;
}

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

/* Upload Area Styles */
.upload-container {
    margin-bottom: 2rem;
}

.upload-area {
    background-color: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    margin-bottom: 1rem;
    transition: border-color 0.3s;
    position: relative;
}

.upload-area:hover {
    border-color: var(--primary-color);
}

.upload-preview {
    max-width: 100%;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    text-align: center;
}

.upload-preview img {
    max-width: 100%;
    max-height: 400px;
    height: auto;
    display: inline-block;
    cursor: crosshair;
    border-radius: 4px;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.upload-instructions p {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.upload-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.7rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s;
}

.upload-btn:hover {
    background-color: #e64a35;
}

.privacy-notice {
    text-align: center;
    font-size: 0.9rem;
    color: #666;
}

.highlight {
    color: var(--primary-color);
    font-weight: 500;
}

/* Color Info Styles */
.color-info-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .color-info-container {
        grid-template-columns: 1fr 1fr;
    }
}

.palette-container, .selected-color-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.palette-container h3, .selected-color-container h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

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

.palette-color {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.2s;
    border: 1px solid var(--border-color);
}

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

.color-info {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.color-preview {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.color-values {
    flex: 1;
}

.color-value {
    margin-bottom: 0.8rem;
}

.color-value span {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
    font-weight: 500;
}

.value-copy {
    display: flex;
    align-items: center;
}

.value-copy input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px 0 0 4px;
    font-family: 'Poppins', sans-serif;
    background-color: var(--card-bg);
    color: var(--text-color);
}

.copy-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 0.8rem;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: background-color 0.3s;
}

.copy-btn:hover {
    background-color: #e64a35;
}

.show-more-btn {
    display: block;
    width: 100%;
    padding: 0.7rem;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: 'Poppins', sans-serif;
    font-size: 0.9rem;
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

.show-more-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Color Picker Styles */
.color-picker-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.picker-controls {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .picker-controls {
        grid-template-columns: 1fr 1fr;
    }
}

.color-canvas-container {
    width: 100%;
}

.color-canvas {
    width: 100%;
    height: 200px;
    border-radius: 8px;
    margin-bottom: 1rem;
    position: relative;
    background: linear-gradient(to right, white, red);
    cursor: crosshair;
}

.color-selector {
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 0 0 1px black;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.hue-slider {
    width: 100%;
    height: 20px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right, 
        hsl(0, 100%, 50%), 
        hsl(60, 100%, 50%), 
        hsl(120, 100%, 50%), 
        hsl(180, 100%, 50%), 
        hsl(240, 100%, 50%), 
        hsl(300, 100%, 50%), 
        hsl(360, 100%, 50%)
    );
    border-radius: 10px;
    outline: none;
}

.hue-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid #333;
    cursor: pointer;
}

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

.color-preview-large {
    width: 100%;
    height: 80px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

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

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
    font-weight: 500;
}

.input-with-copy {
    display: flex;
    align-items: center;
}

.input-with-copy input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px 0 0 4px;
    font-family: 'Poppins', sans-serif;
    background-color: var(--card-bg);
    color: var(--text-color);
}

.rgb-inputs, .hsl-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.rgb-inputs input, .hsl-inputs input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: 'Poppins', sans-serif;
    background-color: var(--card-bg);
    color: var(--text-color);
}

.color-history h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

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

.history-color {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.2s;
    border: 1px solid var(--border-color);
}

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

/* Footer Styles */
footer {
    background-color: var(--bg-color);
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

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

.heart {
    color: var(--primary-color);
}

.footer-links {
    margin: 1rem 0;
}

.footer-links a {
    color: #666;
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.3s;
}

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

.copyright {
    font-size: 0.9rem;
    color: #888;
}

/* SEO Description Styles */
.seo-description {
    background-color: var(--bg-color);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

.seo-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.seo-content p {
    margin-bottom: 1.2rem;
    color: #666;
    line-height: 1.7;
}

.seo-content p:last-child {
    margin-bottom: 0;
}

/* Other Tools Styles */
.other-tools {
    background-color: var(--card-bg);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
}

.other-tools h3 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.tool-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 10px var(--shadow-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tool-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.tool-card p {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.tool-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s;
}

.tool-btn:hover {
    background-color: #e64a35;
}

.tool-btn.disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.tool-btn.disabled:hover {
    background-color: #bbb;
}

/* Utility Classes */
.copied {
    background-color: var(--success-color) !important;
}

.copied i {
    color: white;
}