/* styles.css */

/* Reset some defaults for consistency */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base list */
ul {
  margin-left: 0;
  padding-left: 40px;
}

/* Nested lists */
ul ul {
  margin-left: 20px;
  padding-left: 20px;
}

ul ul ul {
  margin-left: 40px;
  padding-left: 40px;
}




/* Soothing background color palette */
body {
    background-color: #f5f7fa;      /* very soft blue-gray */
    color: #2d3748;                 /* dark slate for good contrast */
    font-family: system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container for the whole page content */
.container {
    max-width: 800px;               /* narrower single column — feels readable */
    margin: 0 auto;
    padding: 2rem 1.5rem;
    flex: 1;
}

/* Page heading */
.page-heading {
    text-align: center;
    margin-bottom: 2.5rem;
    padding: 1rem 0;
}

.page-heading h1 {
    font-size: 2.4rem;
    font-weight: 600;
    color: #2d3748;
    margin: 0;
    line-height: 1.2;
}

.page-heading .update-time {
    font-size: 1.1rem;
    color: #718096;
    margin-top: 0.5rem;
    font-weight: 400;
}

/* Each article / card — now full-width single column */
.column {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    align-items: center;           /* center horizontally */
    text-align: center;            /* center text */
}

/* Images inside cards */
.column img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: block;
}

/* Headings inside cards */
.column h2, .column h3 {
    margin-bottom: 1rem;
    color: #4a5568;
}

/* Constrain text width for readability (even in single column) */
.column p,
.column li {
    max-width: 65ch;
    margin-left: auto;
    margin-right: auto;
}

.column h2,
.column h3 {
    max-width: 70ch;
    margin-left: auto;
    margin-right: auto;
}

/* Full-width special sections (if you still want to use them) */
.full-width {
    background-color: #f0f4ff;
    padding: 2.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
}

/* Page footer */
.footer {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem 1rem;
    border-top: 1px solid #e2e8f0;
    color: #718096;
    font-size: 1rem;
}

.footer a {
    color: #4c51bf;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.footer a:hover,
.footer a:focus {
    color: #5a67d8;
    text-decoration: underline;
}

.footer .copyright {
    margin-top: 1rem;
    font-size: 0.95rem;
    color: #94a3b8;
}

/* Small screens — add a bit more breathing room */
@media screen and (max-width: 480px) {
    .container {
        padding: 1.5rem 1rem;
    }
    
    .column {
        padding: 1.5rem;
    }
    
    .page-heading {
        margin-bottom: 2rem;
    }
    
    .footer {
        padding: 1.5rem 1rem;
        margin-top: 2.5rem;
    }
}