/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Color palette - calm, retro-technical */
:root {
    --bg-color: #f5f5f0;
    --text-color: #2c2c2c;
    --accent-color: #4a5f7a;
    --accent-light: #6a8caf;
    --border-color: #d0d0c8;
    --link-color: #3a4f6a;
    --link-hover: #2a3f5a;
    --code-bg: #e8e8e0;
    --header-bg: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Liberation Sans", sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: 16px;
}

/* Container */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--header-bg);
    border-bottom: 2px solid var(--border-color);
    padding: 2rem 0 1.5rem;
    margin-bottom: 0;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 0.25rem;
}

header .subtitle {
    font-size: 1rem;
    color: #666;
    font-weight: 400;
}

/* Navigation */
nav {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
    margin-bottom: 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .container {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

nav a {
    color: var(--link-color);
    text-decoration: none;
    font-size: 0.95rem;
    padding: 0.25rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s ease;
}

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

/* Main content */
main {
    padding-bottom: 3rem;
}

section {
    margin-bottom: 3rem;
}

section h2 {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

section h3 {
    font-size: 1.15rem;
    color: var(--text-color);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

section p {
    margin-bottom: 1rem;
    text-align: justify;
}

/* Lists */
ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

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

.links-list li {
    padding-left: 1.5rem;
    position: relative;
}

.links-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-light);
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px dotted var(--link-color);
}

a:hover {
    color: var(--link-hover);
    border-bottom-style: solid;
}

nav a,
a[href^="mailto:"] {
    border-bottom: none;
}

a[target="_blank"]::after {
    content: " ↗";
    font-size: 0.85em;
}

/* Projects */
.project {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--header-bg);
    border-left: 3px solid var(--accent-light);
    border-radius: 2px;
}

.project h3 {
    margin-top: 0;
    font-size: 1.1rem;
}

.project p {
    margin-bottom: 0;
}

/* Footer */
footer {
    background-color: var(--header-bg);
    border-top: 2px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
    font-size: 0.9rem;
    color: #666;
}

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

/* Responsive design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.75rem;
    }
    
    section h2 {
        font-size: 1.35rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    nav .container {
        gap: 1rem;
    }
}

/* Print styles */
@media print {
    nav {
        position: static;
    }
    
    a[target="_blank"]::after {
        content: " (" attr(href) ")";
    }
}