@charset "UTF-8";

/* reset */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

/* Global Styles */

/* Dark mode color scheme */
:root {
  --primary-color: #121212;
  --secondary-color: #fafafa;
  --tertiary-color: #6c63ff;
}

/* Fonts */
body {
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

/* Page Layout */
/* Flexbox container for the header */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Grid container for main content */
main {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: auto;
  grid-gap: 2rem;
}

/* Flexbox container for the footer */
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Navigation Styles */
nav ul {
  list-style: none;
  display: flex;
}

nav ul li a {
  color: var(--secondary-color);
  text-decoration: none;
  padding: 1rem;
  transition: all 0.2s ease;
}

nav ul li a:hover {
  color: var(--tertiary-color);
}

/* Placeholder styles for images and videos */
.placeholder-img {
  background-color: var(--secondary-color);
  height: 300px;
}

.placeholder-video {
  background-color: var(--secondary-color);
  height: 300px;
}

/* Transitions and animations */
.fade-in {
  animation: fadeIn 1s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}