/* ============================================
   JAKUB SCHWENKBECK PORTFOLIO - UNIFIED STYLES
   ============================================ */

/* ============================================
   1. GLOBAL STYLES & VARIABLES
   ============================================ */

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

/* Root Variables */
:root {
    --background: #ffffff;
    --primary: #f8f9fa;
    --secondary: #f0f2f5;
    --accent: #2c3e50;
    --accent-light: #3498db;
    --text: #2c3e50;
    --text-light: #555555;
    --border: #e0e0e0;
    --border-light: #f0f0f0;
    
    /* Typography */
    --font-serif: 'Georgia', 'Garamond', serif;
    --font-sans: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'Roboto', sans-serif;
    --font-mono: 'Menlo', 'Monaco', 'Courier New', monospace;
}

/* Body */
body {
    background: var(--background);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    min-height: 100vh;
    padding: 0;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    animation: fadeIn 0.3s ease-out;
}

/* ============================================
   2. ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

a, button {
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

img {
    transition: opacity 0.2s ease;
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */

h1 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

h2 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 1.5rem;
    margin-top: 0;
    border-bottom: 2px solid var(--accent-light);
    padding-bottom: 0.5rem;
}

h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

h4 {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-light);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* Links */
a {
    color: var(--accent-light);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-bottom-color 0.2s ease;
}

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

a:visited {
    color: var(--accent-light);
}

/* Emphasis */
strong {
    font-weight: 600;
    color: var(--accent);
}

em {
    font-style: italic;
}

/* Code */
pre {
    background: var(--secondary);
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--secondary);
    padding: 2px 6px;
    border-radius: 3px;
    color: var(--accent-light);
}

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

li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* Nested lists */
ul ul, ol ul, ul ol, ol ol {
    margin-top: 0.5rem;
    margin-bottom: 0;
}

ul ul li, ol ul li {
    margin-left: 0;
}

/* Blockquotes */
blockquote {
    border-left: 3px solid var(--accent-light);
    padding-left: 1rem;
    margin-left: 0;
    margin-bottom: 1rem;
    color: var(--text-light);
    font-style: italic;
}

/* ============================================
   4. IMAGES
   ============================================ */

img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    border: 1px solid var(--border);
    transition: opacity 0.2s ease;
    display: block;
}

img:hover {
    opacity: 0.9;
}

.profile-pic {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid var(--border);
    flex-shrink: 0;
}

/* ============================================
   5. LAYOUT
   ============================================ */

/* Header */
header {
    width: 100%;
    background: var(--primary);
    border-bottom: 1px solid var(--border);
    padding: 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 30px;
    gap: 20px;
    flex-wrap: wrap;
}

.nav-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    gap: 30px;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--accent-light);
    border-bottom: none;
}

/* Hero Section */
.hero {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 30px;
    display: flex;
    gap: 40px;
    align-items: center;
    background: var(--background);
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 0.3rem;
}

/* Main Content */
main {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

section {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 30px;
    background: var(--primary);
    border-bottom: 1px solid var(--border);
    transition: background-color 0.3s ease;
}

section:last-of-type {
    border-bottom: none;
}

.content-section {
    padding: 40px 30px;
}

.content-section:first-of-type {
    padding-top: 0;
}

/* Experience Items */
.experience-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.experience-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.role-date {
    font-style: italic;
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    display: block;
}

/* Education Items */
.education-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.education-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.degree {
    font-style: italic;
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    display: block;
}

/* Custom Lists */
.research-list,
.awards-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.research-list li,
.awards-list li {
    padding-left: 1.5rem;
    position: relative;
    margin-left: 0;
}

.research-list li::before,
.awards-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-light);
    font-weight: bold;
}

/* Footer */
footer {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 30px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
}

footer p {
    margin-bottom: 0.5rem;
}

/* ============================================
   6. COMPONENTS
   ============================================ */

.links-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 1.5rem;
}

.link-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 6px;
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.link-box:hover {
    border-color: var(--accent-light);
    background-color: var(--secondary);
}

.link-box img {
    max-width: 80px;
    margin-bottom: 10px;
}

.link-box p {
    margin: 0;
    font-size: 0.95rem;
}

.card {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 20px;
    background: var(--primary);
}

.card h3 {
    margin-top: 0;
}

.small-text {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ============================================
   7. RESPONSIVE DESIGN
   ============================================ */

/* Tablets and Large Phones (768px and below) */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }

    .nav-links {
        flex-direction: column;
        gap: 10px;
        width: 100%;
        text-align: center;
    }

    .hero {
        padding: 40px 20px;
        gap: 20px;
        flex-direction: column;
        text-align: center;
    }

    .profile-pic {
        width: 120px;
        height: 120px;
    }

    .content-section {
        padding: 30px 20px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    footer {
        padding: 20px;
    }
}

/* Small Phones (480px and below) */
@media (max-width: 480px) {
    .navbar {
        padding: 10px 15px;
    }

    .nav-title {
        font-size: 1.2rem;
    }

    .nav-links {
        gap: 8px;
        font-size: 0.9rem;
    }

    .hero {
        padding: 20px 15px;
    }

    .profile-pic {
        width: 100px;
        height: 100px;
    }

    .content-section {
        padding: 20px 15px;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    h3 {
        font-size: 1rem;
    }

    .experience-item,
    .education-item {
        margin-bottom: 1.5rem;
        padding-bottom: 1.5rem;
    }

    ul, ol {
        margin-left: 1rem;
    }

    footer {
        padding: 15px;
        font-size: 0.8rem;
    }
}