/* Shared stylesheet for all pages */

/* Universal selector: reset browser default spacing */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Type (tag) selectors */
body {
    background-color: #000000;
    color: #ffffff;
    font-family: Arial, sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
}

/* Header with tabs */
header {
    position: fixed;
    z-index: 1;
    width: 100%;
    padding: 16px 40px;
    background-color: rgba(0, 0, 0, 0.6);
}

/* Descendant selector: all links inside header */
header a {
    text-decoration: none;
}

nav {
    display: flex;
    gap: 24px;
}

/* Child selector: links directly inside nav */
nav > a {
    opacity: 0.6;
}

/* Selector group: :hover pseudo-class and the current tab class */
nav a:hover,
nav a.active {
    opacity: 1;
    border-bottom: 2px solid #fc3d21;
}

/* Full-screen photo */
.photo {
    position: relative;
    height: 100vh;
}

.photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover; /* fill the screen without distortion */
}

.photo img.contain { object-fit: contain; }   /* show the whole photo */
.photo img.top { object-position: top; }      /* keep the top of the frame */

/* Caption on top of the photo */
.caption {
    position: absolute;
    left: 40px;
    bottom: 40px;
    max-width: 520px;
    text-shadow: 0 0 8px #000000;
}

h1, h2 {
    font-size: 48px;
    line-height: 1.1;
    margin: 8px 0;
}

.meta {
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #fc3d21;
}

/* Attribute selector + pseudo-element: arrow after external links */
a[target="_blank"]::after {
    content: " ↗";
}

/* Home page (id selectors) */
#hero img {
    object-position: center 75%; /* keep Earth above the heading */
}

#categories {
    display: flex;
}

#categories .photo {
    flex: 1;
    text-decoration: none;
}

#categories img {
    filter: brightness(0.6);
}

/* Catalog and table */
.page {
    max-width: 1000px;
    margin: 0 auto;
    padding: 120px 40px 60px;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    margin-top: 32px;
    border-collapse: collapse;
}

th, td {
    padding: 10px;
    border-bottom: 1px solid #333333;
}

th {
    color: #fc3d21;
}

td img {
    width: 96px;
    height: 60px;
    object-fit: cover;
}

/* Table alignment */
.left   { text-align: left; }
.center { text-align: center; }
.right  { text-align: right; }

footer {
    padding: 24px 40px;
    font-size: 13px;
    color: #888888;
}

/* Phones */
@media (max-width: 700px) {
    header { padding: 12px 16px; }
    nav { flex-wrap: wrap; gap: 12px; }
    .caption { left: 16px; right: 16px; }
    h1, h2 { font-size: 32px; }
    #categories { flex-direction: column; }
}