/* Color Toolbox Styles */
:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --background: #ffffff;
    --surface: #f8f9fa;
    --text: #2c3e50;
    --text-secondary: #6c757d;
    --border: #dee2e6;
    --shadow: rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --background: #1a1a1a;
    --surface: #2d2d2d;
    --text: #ffffff;
    --text-secondary: #b0b0b0;
    --border: #404040;
    --shadow: rgba(0, 0, 0, 0.3);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    color: var(--text);
    margin-bottom: 30px;
    font-size: 2.5em;
}

h2 {
    color: var(--text);
    margin-bottom: 20px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    gap: 10px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background: var(--surface);
    color: var(--text);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.tab-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

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

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

/* Color Converter Styles */
.color-section {
    background: var(--surface);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow);
}

.color-display {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.color-preview {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--border);
    background: #3498db;
    transition: var(--transition);
    box-shadow: 0 4px 12px var(--shadow);
}

.color-picker-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.color-picker-container input[type="color"] {
    width: 60px;
    height: 60px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    outline: none;
}

.color-picker-container label {
    font-size: 14px;
    color: var(--text-secondary);
}

.color-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 600;
    color: var(--text);
}

.input-group input {
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--background);
    color: var(--text);
    font-size: 16px;
    transition: var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.rgb-inputs, .hsl-inputs {
    display: flex;
    gap: 10px;
}

.rgb-inputs input, .hsl-inputs input {
    flex: 1;
}

.color-info {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.info-item span:first-child {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 14px;
}

.info-item span:last-child {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

/* Palette Generator Styles */
.palette-section {
    background: var(--surface);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow);
}

.palette-controls {
    display: flex;
    align-items: end;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.base-color-control, .scheme-selector {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.base-color-control label, .scheme-selector label {
    font-weight: 600;
    color: var(--text);
}

.base-color-control input[type="color"] {
    width: 50px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    cursor: pointer;
}

.scheme-selector select {
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--background);
    color: var(--text);
    font-size: 16px;
}

#generate-palette {
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
}

#generate-palette:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.color-palette {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
    min-height: 100px;
}

.palette-color {
    display: flex;
    flex-direction: column;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.palette-color:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px var(--shadow);
}

.palette-color-preview {
    height: 100px;
    width: 100%;
}

.palette-color-info {
    padding: 15px;
    background: var(--background);
    text-align: center;
}

.palette-color-hex {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 5px;
}

.palette-color-rgb {
    font-size: 12px;
    color: var(--text-secondary);
}

.palette-export {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.palette-export button {
    padding: 10px 20px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
}

.palette-export button:hover {
    background: var(--primary-color);
    color: white;
}

/* Contrast Checker Styles */
.contrast-section {
    background: var(--surface);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow);
}

.contrast-controls {
    margin-bottom: 30px;
}

.color-inputs-contrast {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.contrast-color {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.contrast-color input[type="color"] {
    width: 50px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    cursor: pointer;
    margin-right: 10px;
}

.contrast-color input[type="text"] {
    flex: 1;
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--background);
    color: var(--text);
    font-family: 'Courier New', monospace;
}

.contrast-preview {
    margin-bottom: 30px;
}

.contrast-demo {
    padding: 30px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border);
    background: #ffffff;
    color: #000000;
    transition: var(--transition);
}

.contrast-demo p {
    margin: 0 0 15px 0;
    font-size: 16px;
    line-height: 1.5;
}

.contrast-demo h3 {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
}

.contrast-results {
    background: var(--background);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border);
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 600;
}

.wcag-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.wcag-level {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: var(--surface);
    border-radius: var(--border-radius);
}

.status {
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
}

.status.pass {
    background: var(--success-color);
    color: white;
}

.status.fail {
    background: var(--danger-color);
    color: white;
}

/* Color Blindness Styles */
.blindness-section {
    background: var(--surface);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px var(--shadow);
}

.blindness-controls {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.test-color-control, .blindness-type {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.test-color-control label, .blindness-type label {
    font-weight: 600;
    color: var(--text);
}

.test-color-control input[type="color"] {
    width: 50px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    cursor: pointer;
}

.blindness-type select {
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--background);
    color: var(--text);
    font-size: 16px;
    min-width: 200px;
}

.blindness-preview {
    margin-bottom: 20px;
}

.vision-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.vision-normal, .vision-simulated {
    text-align: center;
}

.vision-normal h4, .vision-simulated h4 {
    margin-bottom: 15px;
    color: var(--text);
}

.color-preview-large {
    width: 200px;
    height: 200px;
    border-radius: var(--border-radius);
    border: 4px solid var(--border);
    background: #ff6b6b;
    margin: 0 auto;
    box-shadow: 0 4px 12px var(--shadow);
}

.blindness-info {
    background: var(--background);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 2px solid var(--border);
}

.blindness-info p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Instructions */
.instructions {
    background: var(--surface);
    padding: 30px;
    border-radius: var(--border-radius);
    margin-top: 30px;
    box-shadow: 0 4px 6px var(--shadow);
}

.instructions ol {
    padding-left: 20px;
}

.instructions li {
    margin-bottom: 10px;
    line-height: 1.6;
    color: var(--text);
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--surface);
    color: var(--text);
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 12px var(--shadow);
    transition: var(--transition);
    z-index: 1000;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px var(--shadow);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    h1 {
        font-size: 2em;
    }

    .tab-navigation {
        gap: 5px;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 14px;
    }

    .color-display {
        flex-direction: column;
        text-align: center;
    }

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

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

    .color-inputs-contrast {
        grid-template-columns: 1fr;
    }

    .blindness-controls {
        flex-direction: column;
    }

    .vision-comparison {
        grid-template-columns: 1fr;
    }

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

    .palette-export {
        justify-content: center;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.mb-20 {
    margin-bottom: 20px;
}

.copied-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--success-color);
    color: white;
    padding: 15px 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px var(--shadow);
    z-index: 10000;
    animation: fadeInOut 2s ease-in-out;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; transform: translate(-50%, -50%) scale(0.9); }
    20%, 80% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}