/* Courier New - System Font (no import needed) */

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

:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --secondary-text: #666666;
    --border-color: #000000;
    --hover-bg: #000000;
    --hover-text: #ffffff;
}

body {
    font-family: 'Courier New', Courier, monospace;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    border-bottom: 2px solid var(--border-color);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.logo:hover {
    background-color: var(--hover-bg);
    color: var(--hover-text);
    padding: 0.25rem 0.5rem;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 400;
    transition: all 0.3s ease;
    padding: 0.25rem 0.5rem;
}

.nav-links a:hover,
.nav-links a.active {
    background-color: var(--hover-bg);
    color: var(--hover-text);
}

/* Main Content */
main {
    min-height: calc(100vh - 200px);
    padding: 3rem 0;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

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

.hero .description {
    font-size: 1.1rem;
    max-width: 600px;
    line-height: 1.8;
}

/* Page Header */
.page-header {
    padding: 2rem 0 3rem 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.1rem;
    color: var(--secondary-text);
}

/* Quick Links Grid */
.quick-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.link-card {
    border: 2px solid var(--border-color);
    padding: 2rem;
    transition: all 0.3s ease;
}

.link-card:hover {
    background-color: var(--hover-bg);
    color: var(--hover-text);
}

.link-card:hover h2,
.link-card:hover p,
.link-card:hover a {
    color: var(--hover-text);
}

.link-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.link-card p {
    margin-bottom: 1.5rem;
    color: var(--secondary-text);
}

/* Content Section */
.content {
    max-width: 800px;
}

/* Project Items */
.project-item {
    border: 2px solid var(--border-color);
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.project-item:hover {
    background-color: var(--hover-bg);
    color: var(--hover-text);
}

.project-item:hover h2,
.project-item:hover p,
.project-item:hover a,
.project-item:hover .tag {
    color: var(--hover-text);
}

.project-item h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-item .meta {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.project-item .description {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Tags */
.tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.tag {
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.75rem;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Experience Items */
.experience-item {
    border-left: 2px solid var(--border-color);
    padding-left: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

.experience-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    background-color: var(--text-color);
    border-radius: 50%;
}

.experience-item h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.experience-item .meta {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.experience-item .description {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.achievements {
    list-style: none;
    margin-left: 0;
}

.achievements li {
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    position: relative;
}

.achievements li::before {
    content: '→';
    position: absolute;
    left: 0;
}

/* Reading Section */
.reading-section {
    margin-bottom: 3rem;
}

.reading-section h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.reading-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.reading-item:last-child {
    border-bottom: none;
}

.reading-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.reading-item .meta {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.reading-item .description {
    margin-bottom: 0.75rem;
    line-height: 1.8;
}

.reading-item .status {
    font-size: 0.9rem;
    font-weight: 600;
}

/* Blog Posts */
.blog-post {
    border: 2px solid var(--border-color);
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.blog-post:hover {
    background-color: var(--hover-bg);
    color: var(--hover-text);
}

.blog-post:hover h2,
.blog-post:hover p,
.blog-post:hover a {
    color: var(--hover-text);
}

.blog-post h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.blog-post .meta {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.blog-post .description {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Buttons & Links */
.btn,
.link {
    display: inline-block;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn {
    border: 2px solid var(--border-color);
    padding: 0.5rem 1.5rem;
}

.btn:hover {
    background-color: var(--hover-bg);
    color: var(--hover-text);
}

.link:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    border-top: 2px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

footer p {
    text-align: center;
    color: var(--secondary-text);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

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

    .hero .subtitle {
        font-size: 1.2rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .quick-links {
        grid-template-columns: 1fr;
    }
}

/* Selection */
::selection {
    background-color: var(--text-color);
    color: var(--bg-color);
}