/* Minimal, clean design inspired by leoniemonigatti.com */

:root {
    --text-color: #1a1a1a;
    --text-color-light: #6b6b6b;
    --text-color-lighter: #94a3b8;
    --bg-color: #fafafa;
    --bg-content: #ffffff;
    --border-color: #e5e7eb;
    --link-color: #2563eb;
    --link-hover: #1d4ed8;
    --accent-color: #64748b;
    --accent-light: #f1f5f9;
    --max-width: 800px;
    --spacing: 2rem;
    --transition-speed: 0.2s;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 0;
    margin-bottom: 3rem;
    background-color: var(--bg-content);
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: color var(--transition-speed) ease;
}

.logo a:hover {
    color: var(--link-color);
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-menu li a {
    color: var(--text-color-light);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-speed) ease;
}

.nav-menu li a:hover {
    color: var(--text-color);
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--link-color);
    transition: width var(--transition-speed) ease;
}

.nav-menu li a:hover::after {
    width: 100%;
}

/* Main Content */
.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem 4rem;
    min-height: calc(100vh - 200px);
}

/* Home Page */
.home-container {
    padding: 4rem 0 6rem;
}

.intro-section {
    text-align: left;
}

.intro-title {
    font-size: 52px;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-color);
}

.intro-subtitle {
    font-size: 28px;
    color: var(--text-color-light);
    margin-bottom: 2rem;
    font-weight: 400;
    line-height: 1.4;
}

.intro-description {
    font-size: 19px;
    color: var(--text-color);
    margin-bottom: 1.25rem;
    line-height: 1.7;
    max-width: 650px;
}

.intro-links {
    font-size: 19px;
    color: var(--text-color);
    margin-top: 2rem;
}

.intro-links a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 2px solid var(--link-color);
    transition: all var(--transition-speed) ease;
    padding-bottom: 1px;
}

.intro-links a:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
    padding-bottom: 2px;
}

/* Page Content */
.page-content {
    padding: 3rem 0;
}

.page-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 44px;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.page-body {
    font-size: 18px;
    line-height: 1.8;
}

.page-body h2 {
    font-size: 32px;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.page-body h3 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.page-body p {
    margin-bottom: 1.5rem;
}

.page-body ul, .page-body ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.page-body li {
    margin-bottom: 0.5rem;
}

.page-body a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px solid var(--link-color);
    transition: all var(--transition-speed) ease;
}

.page-body a:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
}

.page-body code {
    background-color: var(--accent-light);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
    font-family: 'Courier New', Courier, monospace;
    color: #e74c3c;
}

.page-body pre {
    background-color: var(--accent-light);
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

.page-body pre code {
    background-color: transparent;
    padding: 0;
    color: var(--text-color);
}

.page-body blockquote {
    border-left: 4px solid var(--link-color);
    padding-left: 1.5rem;
    margin: 2rem 0;
    color: var(--text-color-light);
    font-style: italic;
}

.page-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
}

.page-meta {
    font-size: 15px;
    color: var(--text-color-lighter);
    margin-top: 0.5rem;
    font-weight: 500;
}

/* List Pages */
.list-container {
    padding: 3rem 0;
}

.list-header {
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.list-title {
    font-size: 44px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.list-content {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.list-item {
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-speed) ease;
    position: relative;
}

.list-item:hover {
    transform: translateX(8px);
}

.list-item:hover::before {
    content: '→';
    position: absolute;
    left: -20px;
    color: var(--link-color);
    font-weight: bold;
    opacity: 1;
}

.list-item::before {
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

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

.list-item-title {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.list-item-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

.list-item-title a:hover {
    color: var(--link-color);
}

.list-item-description {
    color: var(--text-color-light);
    margin-bottom: 0.75rem;
    line-height: 1.7;
    font-size: 17px;
}

.list-item-meta {
    font-size: 14px;
    color: var(--text-color-lighter);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem;
    margin-top: 6rem;
    text-align: center;
    color: var(--text-color-lighter);
    font-size: 14px;
    background-color: var(--bg-content);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.site-footer a {
    color: var(--text-color-light);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

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

/* Additional Elements */
hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 3rem 0;
}

/* Selection styling */
::selection {
    background-color: var(--link-color);
    color: white;
}

::-moz-selection {
    background-color: var(--link-color);
    color: white;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

/* Buttons */
.button,
button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--link-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.button:hover,
button:hover {
    background-color: var(--link-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.button-secondary {
    background-color: transparent;
    color: var(--link-color);
    border: 2px solid var(--link-color);
}

.button-secondary:hover {
    background-color: var(--link-color);
    color: white;
}

/* Tags/Categories */
.tag,
.category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--accent-light);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    transition: all var(--transition-speed) ease;
}

.tag:hover,
.category:hover {
    background-color: var(--link-color);
    color: white;
    transform: translateY(-1px);
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --spacing: 1rem;
    }
    
    .site-header {
        position: relative;
    }
    
    .nav {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
        padding: 0 1.5rem;
    }
    
    .nav-menu {
        gap: 1.5rem;
        flex-wrap: wrap;
    }
    
    .nav-menu li a::after {
        display: none;
    }
    
    .home-container {
        padding: 2rem 0 4rem;
    }
    
    .intro-title {
        font-size: 36px;
    }
    
    .intro-subtitle {
        font-size: 22px;
    }
    
    .main-content {
        padding: 0 1.5rem 3rem;
    }
    
    .page-title, .list-title {
        font-size: 32px;
    }
    
    .page-body h2 {
        font-size: 28px;
    }
    
    .page-body h3 {
        font-size: 22px;
    }
    
    .list-item:hover::before {
        display: none;
    }
    
    .list-item:hover {
        transform: translateX(0);
    }
    
    .list-item-title {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 16px;
    }
    
    .intro-title {
        font-size: 32px;
    }
    
    .intro-subtitle {
        font-size: 20px;
    }
    
    .intro-description,
    .intro-links {
        font-size: 17px;
    }
    
    .page-title, .list-title {
        font-size: 28px;
    }
}

/* Fixed LinkedIn Link */
.linkedin-fixed {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background-color: #0077b5;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: all var(--transition-speed) ease;
    text-decoration: none;
}

.linkedin-fixed:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 24px -4px rgba(0, 119, 181, 0.3);
    background-color: #005885;
}

.linkedin-fixed svg {
    width: 28px;
    height: 28px;
}

@media (max-width: 768px) {
    .linkedin-fixed {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 48px;
        height: 48px;
    }
    
    .linkedin-fixed svg {
        width: 24px;
        height: 24px;
    }
}