:root {
  --bg: #0e1117;
  --text: #c9d1d9;
  --accent: #58a6ff;
  --prompt: #39d353;
  --header-footer: #161b22;
  --button-bg: #21262d;
  --button-hover: #30363d;
  --terminal-bg: #161b22;
}

[data-theme='light'] {
  --bg: #ffffff;
  --text: #1f2328;
  --accent: #0969da;
  --prompt: #22863a;
  --header-footer: #f0f0f0;
  --button-bg: #ffffff;
  --button-hover: #e7e7e7;
  --terminal-bg: #f1f1f1;
}

body {
  margin: 0;
  font-family: 'JetBrains Mono', monospace;
  background-color: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header, footer {
  background-color: var(--header-footer);
  color: var(--text);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

header .header-left {
  font-size: 1.4rem;
  font-weight: bold;
}

header .header-left a {
  color: var(--text);
  text-decoration: none;
}

header .header-left a:hover {
  text-decoration: underline;
}

header .header-right button {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text);
}

main {
  flex: 1;
  text-align: center;
  padding: 2rem;
}

#ip-display {
  font-size: 3rem;
  margin: 1rem 0;
  color: var(--accent);
}

#copy-btn {
  margin-top: 1rem;
  background-color: var(--button-bg);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background-color 0.3s;
}

#copy-btn:hover {
  background-color: var(--button-hover);
}

.api-box {
  max-width: 720px;
  margin: 3rem auto 0;
  text-align: left;
  background-color: var(--header-footer);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 0 12px rgba(0,0,0,0.2);
}

.api-box h2 {
  color: var(--accent);
  margin-top: 0;
}

.api-box p {
  font-size: 0.95rem;
}

.terminal {
  background-color: var(--terminal-bg);
  padding: 1rem;
  border-radius: 6px;
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--text);
}

.terminal code {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  line-height: 1.5;
  word-wrap: break-word;
}

.terminal .prompt {
  color: var(--prompt);
}

.noscript-warning {
  background-color: #ffdddd;
  color: #000;
  padding: 1rem;
  margin: 2rem auto;
  max-width: 600px;
  border-radius: 6px;
  font-family: monospace;
}

footer {
  justify-content: center;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  gap: 1rem;
}

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

footer a:hover {
  text-decoration: underline;
}

/* Two-column section */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 980px;
  margin: 3rem auto;
  padding: 0 1rem;
  text-align: left;
}

.two-column h3 {
  margin-top: 0;
  color: var(--accent);
}

.two-column .right p {
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.ad-placeholder {
  margin-top: 1rem;
  font-style: italic;
  font-size: 0.85rem;
  opacity: 0.7;
}

@media (max-width: 768px) {
  .two-column {
    grid-template-columns: 1fr;
  }

  #ip-display {
    font-size: 2.2rem;
  }

  .api-box {
    padding: 1.2rem;
    margin: 2rem 1rem;
  }
}