:root {
  --bg: #000000;
  --text: #f7f7f7;
  --panel: #151515;
  --border: #3b3b3b;
  --accent: #7ec8ff;
  --font-size: 1.05rem;
}

html[data-theme="light"] {
  --bg: #ffffff;
  --text: #111111;
  --panel: #f3f3f3;
  --border: #cfcfcf;
  --accent: #0d5cd7;
}

html[data-size="small"] {
  --font-size: 0.95rem;
}

html[data-size="medium"] {
  --font-size: 1.05rem;
}

html[data-size="large"] {
  --font-size: 1.2rem;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Georgia", "Times New Roman", serif;
  font-size: var(--font-size);
  line-height: 1.6;
  transition: background 0.25s ease, color 0.25s ease;
}

main,
header {
  width: min(900px, calc(100% - 2rem));
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 2rem 0 1rem;
}

h1,
h2 {
  margin: 0 0 0.25rem;
}

.subtitle {
  margin: 0;
  opacity: 0.8;
}

.controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

button,
select {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--panel);
  color: var(--text);
  padding: 0.6rem 0.9rem;
  font: inherit;
}

button:hover,
select:hover {
  cursor: pointer;
  border-color: var(--accent);
}

.intro {
  margin: 1.5rem 0 2rem;
  text-align: center;
}

.story-list {
  display: grid;
  gap: 1rem;
}

.story-card {
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 1rem 1.25rem;
  background: var(--panel);
}

.story-card a,
.back-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.story-card p,
.story-body p {
  margin-bottom: 0;
}

.story-page {
  padding: 2rem 0 3rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .controls {
    justify-content: flex-start;
  }
}