*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    "Open Sans",
    "Helvetica Neue",
    sans-serif;

  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.5rem);
  line-height: 1.6;

  /* color variables */
  --color: #3a3545;
  --bg-color: #fdfbff;
  --primary-color: #4a4160;
  --link-hover: #7d6c95;
  --link-active: #3e3450;
  --rgba-value: rgba(107, 91, 138, 0.08);
  --highlight: #f3eefa;
  --on-primary: #fff;
  --table-heading: #a9a9a9;
  --table-sub-heading: #c0c0c0;
  --table-heading-font-size: 1.5rem;
  --table-sub-heading-font-size: 0.95rem;

  /* other variables */
  --border-radius: 12px;
  --border: 1px solid var(--primary-color);
  --grid-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
}

/* Dark mode setup */

.dark-mode {
  --color: #e8e4f0;
  --bg-color: #13111a;
  --primary-color: #c4b8d4;
  --link-hover: #d5cbe2;
  --link-active: #e2daf0;
  --rgba-value: rgba(180, 160, 210, 0.08);
  --highlight: #1e1a2a;
  --on-primary: #1a1525;
  --table-heading: #7a7585;
  --table-sub-heading: #9a95a5;
}

/* dark mode invertions */

body.dark-mode .profile-picture {
  filter: invert(1);
}

body.dark-mode footer img {
  filter: invert(1);
}

body.dark-mode #toggle {
  filter: invert(1);
}

/* scrollbar */
html {
  scrollbar-width: auto;
  scrollbar-color: var(--primary-color) var(--bg-color);
}

body {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--bg-color);
  color: var(--color);
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.5rem);
  line-height: 1.75; /* Slightly increase from 1.6 */
}

main {
  flex: 1;
  width: 100%;
  max-width: 50rem;
  margin: 0 auto;
  padding: 2rem 1rem;
}

h1,
h2,
h3 {
  font-family: Georgia, "Times New Roman", Times, serif;
  font-weight: 700;
}

h1 {
  text-align: center;
  margin-bottom: 2rem;
}

main.posts {
  max-width: 1200px;
}

.main-sections {
  display: flex;
}

.main-sections main {
  flex: 1;
  min-width: 0;
}

blockquote {
  margin: 0;
  font-weight: bold;
  font-style: italic;
}

header {
  border: var(--border);
  border-radius: var(--border-radius);
  background-color: var(--bg-color);
  padding: 1rem;
  margin: 0.5rem 1rem;
}

header nav {
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  font-weight: bold;
}
.nav-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

nav a {
  max-width: fit-content;
}

/* Theme toggle */

button#toggle {
  justify-self: end;
}

button img {
  width: 24px;
}

p.article {
  margin-top: 2rem;
  margin-bottom: 2rem;
}

/* link states */

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

a:hover {
  color: var(--link-hover);
}

a:active {
  color: var(--link-active);
}

/* footer section */

footer {
  display: flex;
  flex-direction: column;
  max-width: 100%;
  text-align: center;
  border: var(--border);
  border-radius: var(--border-radius);
  background-color: var(--bg-color);
  padding: 1rem;
  margin: 0 1rem 0.5rem;
}

footer.footer-links {
  display: flex;
  gap: 2rem;
}

/* profile */

.profile {
  text-align: center;
}

.profile-picture {
  width: 200px;
  height: auto;
  margin: 2rem auto;
}

div.greeting-message {
  margin: 2rem;
}

/* table customization */

.table-wrapper {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  font-size: large;
  margin: 2rem auto;
  border-radius: var(--border-radius);
  border-collapse: collapse;
}

table,
tr,
td {
  border-bottom: 1px solid var(--primary-color);
  text-align: left;
  padding: 1rem;
}

th {
  padding: 1rem 2rem;
  text-align: center;
  background-color: var(--table-heading);
  color: var(--on-primary);
  font-size: var(--table-heading-font-size);
}

.th-sections {
  padding: 1rem 2rem;
  text-align: center;
  background-color: var(--table-sub-heading);
  color: var(--on-primary);
  font-size: var(--table-sub-heading-font-size);
}

td.table-icons {
  text-align: center;
}

td.table-icons img {
  width: 20px;
  height: 20px;
  display: inline-block;
}

/* posts page */

.post-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 350px));
  justify-content: center;
  gap: 2rem;
  max-width: 1200px;
}

.post-overview .post-preview {
  border: var(--border);
  background-color: var(--bg-color);
  padding: 1rem;
  text-align: center;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 10px var(--rgba-value); /* Subtle depth */
  transition: box-shadow 0.3s ease; /* Smooth glide effect */
}

.post-overview .post-preview:hover {
  transform: none;
  box-shadow: 0 5px 15px var(--rgba-value);
}

/*Responsive Designing*/

@media (max-width: 600px) {
  .main-sections {
    flex-direction: column;
  }

  main {
    max-width: 100%;
    margin: 0 auto;
    padding: 1rem;
  }

  nav {
    gap: 1.5rem;
  }

  .nav-links {
    gap: 2rem;
  }

  .profile-picture {
    max-width: 40%;
    height: auto;
    margin: 1.5rem;
  }

  .post-overview {
    gap: 1.5rem;
  }
}