/* CSS Variables for Theming */
:root {
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-primary: #1a1a1a;
    --text-secondary: #4a5568;
    --text-accent: #718096;
    --accent-color: #4f46e5;
    --accent-hover: #4338ca;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --particle-color: rgba(79, 70, 229, 0.1);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --text-accent: #808080;
    --accent-color: #7c3aed;
    --accent-hover: #8b5cf6;
    --border-color: #2a2a2a;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
    --particle-color: rgba(139, 92, 246, 0.05);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

/* Theme Toggle Styles */
.theme-toggle-container {
    position: fixed;
    top: 30px;
    right: 30px;
    z-index: 1000;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.sun-icon {
    color: var(--text-primary);
}

.moon-icon {
    position: absolute;
    color: var(--text-primary);
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .sun-icon {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}