:root[data-theme="light"] {
    --bg-color: #f5f5f5;
    --text-color: #333;
    --card-bg: white;
    --primary-color: #3498db;
    --primary-hover: #2980b9;
    --secondary-bg: #f8f9fa;
    --border-color: #e9ecef;
    --text-secondary: #666;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

:root[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --card-bg: #2d2d2d;
    --primary-color: #4fa3d1;
    --primary-hover: #3a7ca5;
    --secondary-bg: #363636;
    --border-color: #404040;
    --text-secondary: #999;
    --shadow-color: rgba(0, 0, 0, 0.2);
}

:root[data-theme="synthwave"] {
    --bg-color: #1a1a2e;
    --text-color: #ff71ce;
    --card-bg: #16162a;
    --primary-color: #01cdfe;
    --primary-hover: #05d9ff;
    --secondary-bg: #1f1f3a;
    --border-color: #2a2a4a;
    --text-secondary: #b967ff;
    --shadow-color: rgba(1, 205, 254, 0.2);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.section {
    background: var(--card-bg);
}

.btn {
    background-color: var(--primary-color);
    box-shadow: 0 0 10px var(--shadow-color);
}

.btn:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 0 20px var(--shadow-color);
}

.result-item {
    background: var(--secondary-bg);
}

.progress-bar {
    background: var(--border-color);
    box-shadow: inset 0 0 5px var(--shadow-color);
}

[data-theme="synthwave"] .progress {
    background: linear-gradient(90deg, var(--primary-color), #b967ff);
}

[data-theme="synthwave"] .score-text {
    text-shadow: 0 0 10px var(--primary-color);
}

[data-theme="synthwave"] .btn-share {
    background: linear-gradient(45deg, #01cdfe, #b967ff);
}

[data-theme="synthwave"] .btn-share:hover {
    background: linear-gradient(45deg, #05d9ff, #c278ff);
}

[data-theme="synthwave"] .type-name {
    color: #fffb96;
    text-shadow: 0 0 10px #fffb96;
}

[data-theme="synthwave"] .characteristics h4,
[data-theme="synthwave"] .suggestions h4,
[data-theme="synthwave"] .footer-section h4 {
    color: #01cdfe;
    text-shadow: 0 0 5px #01cdfe;
}

[data-theme="synthwave"] .characteristics-list li::before,
[data-theme="synthwave"] .suggestions-list li::before {
    color: #b967ff;
    text-shadow: 0 0 5px #b967ff;
}

[data-theme="synthwave"] .option-label:hover {
    background: linear-gradient(45deg, var(--secondary-bg), #1f1f3a);
    box-shadow: 0 0 10px var(--shadow-color);
}

[data-theme="synthwave"] .dimension-card {
    background: linear-gradient(135deg, #16162a, #1f1f3a);
    box-shadow: 0 0 15px var(--shadow-color);
}

[data-theme="synthwave"] .dimension-card:hover {
    box-shadow: 0 0 25px var(--shadow-color);
}

[data-theme="synthwave"] .card-icon {
    text-shadow: 0 0 10px var(--primary-color);
}

[data-theme="synthwave"] .nav-title {
    background: linear-gradient(45deg, #ff71ce, #01cdfe);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 5px var(--shadow-color);
}

[data-theme="synthwave"] .footer-section a {
    color: #01cdfe;
    text-shadow: 0 0 5px #01cdfe;
}

[data-theme="synthwave"] .footer-section a:hover {
    color: #b967ff;
    text-shadow: 0 0 10px #b967ff;
}

.options label:hover {
    background-color: var(--secondary-bg);
}

.theme-switch {
    position: fixed;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}

.lang-switch {
    position: fixed;
    top: 1rem;
    left: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}