:root {
  --bg: #f5f2ec;
  --text: #1a1a1a;
  --muted: #9a9590;
  --accent: #2d6a4f;
  --border: #d8d4cc;
  --hover-bg: #1a1a1a;
  --hover-text: #f5f2ec;
  --tooltip-bg: #1a1a1a;
  --tooltip-text: #f5f2ec;
}
.dark {
  --bg: #111110;
  --text: #e8e4dc;
  --muted: #5a5550;
  --accent: #52b788;
  --border: #2a2a28;
  --hover-bg: #e8e4dc;
  --hover-text: #111110;
  --tooltip-bg: #e8e4dc;
  --tooltip-text: #111110;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;1,400&display=swap');

body {
  font-family: 'Lora', serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* NAV */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem 2rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  transition: background 0.3s, border-color 0.3s;
}
.site-name {
  font-family: 'Lora', serif;
  font-size: 1.4rem;
  letter-spacing: 0.03em;
  color: var(--text);
  cursor: pointer;
  border: none;
  background: none;
}
.nav-right { display: flex; align-items: center; gap: 1.2rem; }
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: pointer;
  padding: 0.3rem 0.65rem;
  border-radius: 20px;
  font-family: Arial, sans-serif;
  font-size: 0.73rem;
  letter-spacing: 0.06em;
  transition: all 0.2s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--text); }
.about-btn {
  font-family: 'Georgia', serif;
  font-size: 1.1rem;
  color: var(--muted);
  cursor: pointer;
  border: none;
  background: none;
  transition: color 0.2s;
  line-height: 1;
}
.about-btn:hover { color: var(--text); }

/* PAGES */
#home, #story-view, #about-view { display: none; flex: 1; }
#home { display: flex; }

/* NUMBER GRID */
.grid-wrap {
  flex: 1;
  padding: 3rem 2.5rem;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  align-content: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.num-item {
  position: relative;
  font-family: Arial, sans-serif;
  font-size: 1rem;
  font-weight: normal;
  letter-spacing: 0.04em;
  color: var(--muted);
  cursor: pointer;
  padding: 0.4rem 0.5rem;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s;
  user-select: none;
}
.num-dot {
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--muted);
  margin: 3px auto 0;
  opacity: 0;
  transition: opacity 0.2s;
}
.num-item.visited .num-dot { opacity: 1; }
.num-item:hover {
  background: var(--hover-bg);
  color: var(--hover-text);
}
.num-item:hover .tooltip { opacity: 1; pointer-events: none; }

/* TOOLTIP */
.tooltip {
  opacity: 0;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  width: 260px;
  background: var(--tooltip-bg);
  color: var(--tooltip-text);
  padding: 1rem 1.1rem;
  border-radius: 4px;
  pointer-events: none;
  transition: opacity 0.15s;
  z-index: 200;
}
.tooltip-title {
  font-family: 'Georgia', serif;
  font-size: 0.88rem;
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.tooltip-teaser {
  font-family: Arial, sans-serif;
  font-size: 0.75rem;
  line-height: 1.55;
  opacity: 0.75;
}
/* flip tooltip if near right edge */
.num-item.flip-left .tooltip { left: auto; right: 0; }
/* flip tooltip if near bottom */
.num-item.flip-up .tooltip { top: auto; bottom: calc(100% + 10px); }

/* STORY VIEW */
#story-view { flex-direction: column; }
.story-header {
  max-width: 640px;
  margin: 0 auto;
  padding: 4rem 2rem 2.5rem;
  border-bottom: 1px solid var(--border);
  width: 100%;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: Arial, sans-serif;
  font-size: 0.73rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  border: none;
  background: none;
  margin-bottom: 2rem;
  padding: 0;
  transition: color 0.2s;
}
.back-btn:hover { color: var(--text); }
.story-meta {
  font-family: Arial, sans-serif;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.story-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: normal;
  line-height: 1.2;
}
.story-body {
  max-width: 640px;
  margin: 0 auto;
  padding: 2.5rem 2rem 6rem;
  font-size: 1.08rem;
  line-height: 1.85;
  width: 100%;
}
.story-body p { margin-bottom: 1.4em; }

/* ABOUT VIEW */
#about-view { flex-direction: column; }
.about-body {
  max-width: 580px;
  margin: 0 auto;
  padding: 5rem 2rem 6rem;
  width: 100%;
}
.about-body h2 {
  font-size: 1.5rem;
  font-weight: normal;
  margin-bottom: 1.5rem;
}
.about-body p {
  font-family: Arial, sans-serif;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 1.2em;
}
.about-body p strong {
  color: var(--text);
  font-family: 'Georgia', serif;
  font-weight: normal;
}

footer {
  border-top: 1px solid var(--border);
  padding: 1.2rem 2rem;
  text-align: center;
  font-family: Arial, sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  transition: border-color 0.3s;
}