/* ============================================
   Jessie Hartke Portfolio
   Design: Refined minimalism, editorial clarity
   ============================================ */

/* CSS Variables */
:root {
    /* Typography */
    --font-serif: 'Charter', 'Georgia', 'Times New Roman', serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    
    /* Colors - Neutral and restrained */
    --color-black: #1a1a1a;
    --color-gray-dark: #4a4a4a;
    --color-gray-medium: #707070;
    --color-gray-light: #e5e5e5;
    --color-white: #ffffff;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 3rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    
    /* Layout */
    --max-width: 680px;
    --max-width-wide: 800px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-black);
    background-color: var(--color-white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.25rem;
}

p:last-child {
    margin-bottom: 0;
}

a {
    color: var(--color-black);
    text-decoration: none;
    border-bottom: 1px solid var(--color-gray-light);
    transition: border-color 0.2s ease;
}

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

/* Navigation */
.nav {
    border-bottom: 1px solid var(--color-gray-light);
    padding: var(--space-md) 0;
    margin-bottom: var(--space-2xl);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-name {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 400;
    border: none;
}

.nav-name:hover {
    border: none;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    font-size: 0.9375rem;
    color: var(--color-gray-dark);
    border: none;
}

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

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Hero */
.hero {
    margin-bottom: var(--space-2xl);
}

.hero-name {
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.hero-title {
    font-size: 1.25rem;
    color: var(--color-gray-dark);
    font-weight: 400;
    margin-bottom: 0;
}

/* Sections */
.section {
    margin-bottom: var(--space-2xl);
}

.section-heading {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

/* Lists */
.capabilities-list {
    list-style: none;
}

.capabilities-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.capabilities-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-gray-medium);
}

/* Case Study Previews */
.case-study-preview {
    margin-bottom: var(--space-lg);
}

.case-study-preview:last-child {
    margin-bottom: 0;
}

.case-study-title {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.case-study-title a {
    border: none;
}

.case-study-title a:hover {
    border-bottom: 1px solid var(--color-black);
}

.case-study-description {
    color: var(--color-gray-dark);
    margin-bottom: 0;
    line-height: 1.6;
}

/* Case Study Detail Pages */
.case-study-header {
    margin-bottom: var(--space-xl);
}

.case-study-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-md);
    color: var(--color-gray-dark);
    font-size: 0.9375rem;
}

.case-study-content {
    margin-bottom: var(--space-2xl);
}

.case-study-content h2 {
    font-size: 1.375rem;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.case-study-content h3 {
    font-size: 1.125rem;
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.case-study-content ul {
    list-style: none;
    margin-bottom: var(--space-md);
}

.case-study-content ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.case-study-content ul li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-gray-medium);
}

/* Media and References */
.media-section {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-gray-light);
}

.media-item {
    margin-bottom: var(--space-md);
}

.media-title {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.media-title a {
    border-bottom: 1px solid var(--color-gray-light);
}

.media-source {
    font-size: 0.875rem;
    color: var(--color-gray-medium);
    margin-bottom: 0;
}

.video-embed {
    margin-top: var(--space-md);
    margin-bottom: var(--space-md);
}

.video-embed iframe {
    width: 100%;
    height: 400px;
    border: none;
}

/* How I Work Page */
.work-principles {
    margin-bottom: var(--space-xl);
}

.work-principles h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

/* Footer */
.footer {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-top: 1px solid var(--color-gray-light);
}

.footer-links {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.footer-note {
    color: var(--color-gray-dark);
    font-size: 0.9375rem;
    margin-bottom: 0;
}

/* Contact Page */
.contact-content {
    margin-top: var(--space-xl);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    font-size: 1.125rem;
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --space-xl: 3rem;
        --space-2xl: 4rem;
    }
    
    .hero-name {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 1.125rem;
    }
    
    .section-heading {
        font-size: 1.375rem;
    }
    
    .case-study-title {
        font-size: 1.125rem;
    }
    
    .nav-container {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .case-study-meta {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .video-embed iframe {
        height: 250px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 15px;
    }
    
    .hero-name {
        font-size: 1.75rem;
    }
}