:root {
  --bg-color: #4a1e1e;
  --text-color: #f2eaea;
  --accent-color: #b35a5a;
  --nav-bg: #3a1616;
}

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

body {
  font-family: Georgia, "Times New Roman", serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== HEADER / NAV ===== */
header {
  background-color: var(--nav-bg);
  width: 100%;
  position: relative;
}

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1rem;
  gap: 1rem;
  width: 100%;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
  min-width: 1rem;
}

.logo {
  font-weight: bold;
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
  color: var(--accent-color);
}

.terminal-icon-btn {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  transition: color 0.2s;
}

.terminal-icon-btn:hover {
  color: var(--accent-color);
}

.terminal-icon-btn svg {
  width: 20px;
  height: 20px;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

header nav a {
  text-decoration: none;
}

nav a.active {
  border-bottom: 2px solid currentColor;
}

/* ===== MAIN LAYOUT ===== */
main {
  max-width: 800px;
  margin: 4rem auto;
  padding: 0 1.5rem;
}

/* ===== FOOTER ===== */
footer {
  margin-top: 5rem;
  padding: 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}

.rss-link {
  color: #b35a5a;
  text-decoration: none;
  display: inline-block;
}

.rss-link:hover {
  text-decoration: underline;
}

.rss-link svg {
  stroke: #b35a5a;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.1rem;
  transform: translateY(-1px);
}

ul {
  padding-left: 0;
  list-style-position: inside;
}

/* ===== MOBILE NAV TOGGLE ===== */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-color);
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== MOBILE: 640px and below ===== */
@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--nav-bg);
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 1rem 0;
    z-index: 100;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    padding: 0.6rem 2rem;
  }

  main {
    padding: 1rem;
  }

  img {
    max-width: 100%;
    height: auto;
  }

  pre, code {
    overflow-x: auto;
    font-size: 0.85rem;
  }
}

/* ===== MOBILE: 400px and below ===== */
@media (max-width: 400px) {
  header nav {
    padding: 0.5rem 0.75rem; /* same padding left AND right */
    gap: 0.25rem;
  }

  header nav {
    padding: 0.5rem 0.5rem 0.5rem 0.1rem; /* tighter on tiny screens */
    gap: 0.25rem;
  }

  .nav-left {
    margin-left: 0;
    padding-left: 0;
    gap: 0.3rem;
  }

  .logo {
    font-size: 0.8rem;
    letter-spacing: 0;
  }

  .terminal-icon-btn {
    width: 18px;
    height: 18px;
  }
}