/* CSS Variables for Themes */
:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --accent-color: #007bff;
    --secondary-bg: #f8f9fa;
    --border-color: #e9ecef;
    --code-bg: #f4f4f4;
    --code-text: #d73a49;
    --shadow: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    --bg-color: #1e1e1e;
    --text-color: #f8f8f2;
    --accent-color: #61dafb;
    --secondary-bg: #2d2d2d;
    --border-color: #404040;
    --code-bg: #2d2d2d;
    --code-text: #f92672;
    --shadow: rgba(0, 0, 0, 0.3);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3 {
    font-family: 'Courier New', monospace;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

/* Header */
header {
    background-color: var(--secondary-bg);
    padding: 1rem 0;
    box-shadow: 0 2px 4px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    font-family: monospace;
}

.logo span {
    color: var(--accent-color);
    font-size: 2rem;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--accent-color);
}

#dark-mode-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

#dark-mode-toggle:hover {
    transform: scale(1.1);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-bg));
    color: white;
    border-radius: 10px;
    margin-bottom: 3rem;
    animation: fadeIn 1s ease-in;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

/* Why Coding Section */
.why-coding {
    margin-bottom: 3rem;
}

.why-coding h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.modules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.module {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.module:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px var(--shadow);
}

.module h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

/* Code Snippet */
.code-snippet {
    background-color: var(--code-bg);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
}

.code-snippet h2 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

pre {
    background-color: var(--code-bg);
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
}

code {
    color: var(--code-text);
}

.copy-btn {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.copy-btn:hover {
    background-color: #0056b3;
}

/* Article Cards */
.article-card {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px var(--shadow);
}

.article-card h2 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.article-meta {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1rem;
}

.read-more {
    display: inline-block;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: #0056b3;
}

/* Project Cards */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-card {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px var(--shadow);
}

.project-card h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.tech-stack {
    margin: 1rem 0;
}

.tech-stack span {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    font-size: 0.8rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.project-links {
    margin-top: 1.5rem;
}

.btn.secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.btn.secondary:hover {
    background-color: var(--accent-color);
    color: white;
}

/* Resources */
.resource-section {
    margin-bottom: 3rem;
}

.resource-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.book-list, .course-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.book-item, .course-item {
    background-color: var(--secondary-bg);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow);
}

.book-item h3, .course-item h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.glossary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.term {
    background-color: var(--secondary-bg);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--accent-color);
}

.term h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

/* Contact */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.contact-info h2, .contact-form h2 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.info-item {
    margin-bottom: 2rem;
}

.info-item h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.info-item a {
    color: var(--accent-color);
    text-decoration: none;
}

.info-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Footer */
footer {
    background-color: var(--secondary-bg);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.module, .hero, .code-snippet {
    animation: fadeIn 1s ease-in;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .modules {
        grid-template-columns: 1fr;
    }
}