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

:root {
    --primary: #1e88e5;
    --dark: #212121;
    --light: #f5f5f5;
    --border: #e0e0e0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: white;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--dark);
    color: white;
    padding: 20px 0;
    margin-bottom: 40px;
}

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

.site-title {
    font-size: 1.5em;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.lead {
    font-size: 1.2em;
    color: #666;
}

/* Content */
main {
    min-height: 60vh;
}

.content {
    margin-bottom: 40px;
}

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.issue-card {
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    padding: 20px;
    border-radius: 4px;
    background: var(--light);
    transition: box-shadow 0.2s;
}

.issue-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.issue-card h3 {
    margin-bottom: 10px;
}

.issue-card a {
    color: var(--primary);
    text-decoration: none;
}

.issue-card a:hover {
    text-decoration: underline;
}

.date-range {
    color: #666;
    font-size: 0.9em;
    margin: 8px 0;
}

.inventory-number {
    font-family: 'Courier New', Courier, monospace;
    color: #666;
}

.id-number {
    background: var(--light);
    margin: 2px;
    padding: 2px;
}

/* Tags */
a.tag {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 0.85em;
    margin-right: 5px;
}

.tags {
    margin: 8px 0;
}

/* Buttons */
.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    text-decoration: none;
    transition: background 0.2s;
}

.btn:hover {
    background: #1565c0;
}

.btn-back {
    display: inline-block;
    margin-top: 20px;
}

/* Footer */
.site-footer {
    background: var(--light);
    padding: 30px 20px;
    text-align: center;
    color: #666;
    margin-top: 60px;
}

/* Post */
.post {
    max-width: 700px;
    margin: 0 auto;
}

.post header {
    margin-bottom: 30px;
}

.post h1 {
    margin-bottom: 10px;
}

.post .meta {
    color: #666;
    font-size: 0.95em;
}