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

/* Light Theme (Default) */
:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --button-bg: #f5f5f5;
    --button-hover: #e8e8e8;
    --shadow: rgba(0, 0, 0, 0.1);
    --link-color: #007acc;
    --link-hover: #0056b3;
    --link-visited: #6f42c1;
}

/* Dark Theme */
body.dark-theme {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --text-secondary: #cccccc;
    --border-color: #333333;
    --button-bg: #2a2a2a;
    --button-hover: #3a3a3a;
    --shadow: rgba(255, 255, 255, 0.1);
    --link-color: #66b3ff;
    --link-hover: #4da6ff;
    --link-visited: #b366ff;
}

/* Base Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 100;
}

.theme-toggle:hover {
    background: var(--button-hover);
    transform: scale(1.1);
}

/* Main Showcase */
.showcase {
    text-align: center;
    max-width: 800px;
    width: 100%;
}

.image-container {
    margin-bottom: 2rem;
}

.main-image {
    max-width: 100%;
    max-height: 70vh;
    width: auto;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--shadow);
    transition: transform 0.3s ease;
    object-fit: contain;
}

/* Content */
.content {
    max-width: 600px;
    margin: 0 auto;
}

.title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.description {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Link Styles */
a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

a:visited {
    color: var(--link-visited);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .theme-toggle {
        top: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .main-image {
        border-radius: 8px;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .description {
        font-size: 0.9rem;
    }
}