/* DrewIs Intelligence LLC Research - Academic Site Styles */

:root {
    --primary-orange: #FF9900;
    --dark-bg: #1a1a1a;
    --light-text: #f5f5f5;
    --gray-text: #cccccc;
    --white: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--dark-bg);
    color: var(--light-text);
    padding: 1.5rem 0;
    border-bottom: 3px solid var(--primary-orange);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 60px;
    width: auto;
}

.logo a {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 15px;
}

.site-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-orange);
    margin: 0;
}

.site-tagline {
    font-size: 0.9rem;
    color: var(--gray-text);
    margin: 0;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-orange);
}

/* Main Content */
.main-content {
    padding: 3rem 0;
    min-height: 60vh;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-bg);
    border-bottom: 3px solid var(--primary-orange);
    padding-bottom: 0.5rem;
}

h2 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: #333;
}

h3 {
    font-size: 1.4rem;
    margin: 1.5rem 0 0.75rem;
    color: #444;
}

.lead {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 2rem;
}

section {
    margin: 2rem 0;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary-orange);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #cc7700;
    text-decoration: underline;
}

/* Publication Cards */
.publication-card {
    background: #f9f9f9;
    border-left: 4px solid var(--primary-orange);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 4px;
}

.publication-card h3 {
    color: var(--dark-bg);
    margin-top: 0;
}

.publication-meta {
    color: #666;
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

.publication-meta strong {
    color: var(--primary-orange);
}

.doi-link {
    display: inline-block;
    background: var(--primary-orange);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    margin-top: 0.5rem;
    font-weight: 500;
    text-decoration: none;
}

.doi-link:hover {
    background: #cc7700;
    text-decoration: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--primary-orange);
    color: var(--white);
}

.btn-primary:hover {
    background: #cc7700;
    text-decoration: none;
}

/* Footer */
.site-footer {
    background: var(--dark-bg);
    color: var(--gray-text);
    padding: 2rem 0;
    margin-top: 4rem;
    border-top: 3px solid var(--primary-orange);
    text-align: center;
}

.site-footer a {
    color: var(--primary-orange);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .logo img {
        height: 50px;
    }
    
    .site-title {
        font-size: 1.5rem;
    }
}