/* ── Timeline — minimal vertical timeline ── */

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a4a68;
  --color-teal: #007d7e;
  --color-purple: #2e1f5e;
  --color-surface: #f7f7fa;
  --color-border: #e4e4ec;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, sans-serif;
  --container-narrow: 780px;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
}

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

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 var(--space-md); }
.container--narrow { max-width: var(--container-narrow); }

/* header */
.tl-header {
  padding: var(--space-xl) 0 var(--space-lg);
  background: var(--color-surface);
}

.tl-header--entry { padding-bottom: var(--space-md); }

.tl-back {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--color-teal);
  text-decoration: none;
  margin-bottom: var(--space-sm);
}
.tl-back:hover { text-decoration: underline; }

.tl-header__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--color-purple);
  letter-spacing: -0.02em;
  margin-bottom: 0.3em;
}

.tl-header__intro {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
}

/* year groups */
.tl-list { padding: var(--space-lg) 0 var(--space-xl); }

.tl-year { margin-bottom: var(--space-lg); }

.tl-year__label {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-purple);
  margin-bottom: var(--space-sm);
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-teal);
  display: inline-block;
}

/* entries */
.tl-entries {
  list-style: none;
  position: relative;
  padding-left: 1.75rem;
}

.tl-entries::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.4rem;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.tl-entry {
  position: relative;
  padding-bottom: 1.75rem;
}

.tl-entry:last-child { padding-bottom: 0; }

.tl-entry::before {
  content: '';
  position: absolute;
  left: -1.75rem;
  top: 0.55rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-teal);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-teal);
}

.tl-entry__date {
  display: block;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-teal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.15rem;
}

.tl-entry__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-purple);
  margin-bottom: 0.25rem;
}

.tl-entry__title a {
  color: inherit;
  text-decoration: none;
}
.tl-entry__title a:hover {
  color: var(--color-teal);
}

.tl-entry__summary {
  font-size: 0.975rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* detail page body */
.tl-body {
  padding: var(--space-lg) 0 var(--space-xl);
}

.tl-entry-hero__date {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-teal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.rich-text p {
  margin-bottom: 1.25em;
  color: var(--color-text-secondary);
}
.rich-text p:last-child { margin-bottom: 0; }

.tl-empty {
  color: var(--color-text-secondary);
  font-style: italic;
}

/* footer */
.site-footer {
  padding: var(--space-md) 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
}

@media (max-width: 600px) {
  .tl-header { padding: var(--space-lg) 0 var(--space-md); }
  .tl-entries { padding-left: 1.25rem; }
  .tl-entry::before { left: -1.25rem; }
}