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

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #111;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

.deck { width: 100vw; height: 100vh; position: relative; }

.slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 60px 80px;
  overflow: hidden;
}
.slide.active { display: flex; }

/* ── Colour themes ── */
.navy {
  background: linear-gradient(145deg, #062340 0%, #0c3565 60%, #062340 100%);
  color: white;
}
.blue {
  background: linear-gradient(145deg, #1350a0 0%, #1a6abf 100%);
  color: white;
}
.mid-blue {
  background: linear-gradient(145deg, #1565c0 0%, #1e88e5 100%);
  color: white;
}

/* ── Typography ── */
.big-title  { font-size: clamp(3rem, 6vw, 5rem); font-weight: 900; text-align: center; line-height: 1.15; }
.main-title { font-size: clamp(2rem, 3.5vw, 3rem); font-weight: 700; line-height: 1.2; }
.subtitle   { font-size: clamp(1rem, 1.8vw, 1.6rem); opacity: 0.9; margin-top: 16px; line-height: 1.5; }
.date-text  { font-size: clamp(0.9rem, 1.5vw, 1.4rem); font-weight: 700; margin-top: 24px; letter-spacing: 1px; }

.section-label {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 3px;
  opacity: 0.75;
  margin-bottom: 24px;
  align-self: flex-start;
}

.left { align-items: flex-start; text-align: left; }

h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 700; margin-bottom: 32px; }

ul, ol {
  padding-left: 1.5em;
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  line-height: 2;
}
ul li { margin-bottom: 4px; }

.agenda-row {
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  margin: 10px 0;
  align-self: flex-start;
}

a { color: #64b5f6; }
a.teal { color: #4dd0e1; }

.highlight { color: #64b5f6; }
.todo {
  color: #ffd54f;
  background: rgba(255, 213, 79, 0.12);
  padding: 1px 8px;
  border-radius: 3px;
  font-style: italic;
}

/* ── Ground rules ── */
.ground-list { font-size: clamp(1.1rem, 1.8vw, 1.55rem); line-height: 2.1; padding-left: 1.4em; }

/* ── Show & Tell / Featured Demo ── */
.st-item { font-size: clamp(1.5rem, 2.5vw, 2.2rem); margin: 14px 0; }

/* ── Upcoming events list ── */
.events-list { font-size: clamp(0.95rem, 1.5vw, 1.25rem); line-height: 1.6; }
.events-list li { margin-bottom: 10px; }
.event-meta { font-size: 0.85em; opacity: 0.65; }

/* ── Drupal wordmark placeholder ── */
.drupal-wordmark {
  margin-top: 40px;
  font-size: 1.2rem;
  opacity: 0.4;
  letter-spacing: 6px;
  text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.3);
  padding: 8px 24px;
  border-radius: 4px;
}

.drupal-logo-area {
  display: flex; align-items: center; gap: 10px;
  margin-top: 36px; opacity: 0.5;
  font-size: 1rem; letter-spacing: 4px; text-transform: uppercase;
}

/* ── Title slide two-column layout ── */
.slide-split  { flex-direction: row; gap: 48px; }
.split-main   { flex: 1.2; display: flex; flex-direction: column; justify-content: center; text-align: left; }
.split-aside  { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; }
.title-img    { max-width: 100%; max-height: 420px; object-fit: contain; border-radius: 10px; }

/* ── Slide body typography ── */
.slide-body    { font-size: clamp(1.2rem, 2vw, 1.7rem); opacity: 0.85; }
.slide-body-sm { font-size: clamp(1rem, 1.6vw, 1.35rem); line-height: 1.7; }
.slide-cta     { font-size: clamp(1.2rem, 2vw, 1.7rem); font-weight: 600; }
.slide-hint    { font-size: clamp(1rem, 1.6vw, 1.3rem); opacity: 0.75; }
.slide-note    { font-size: clamp(0.8rem, 1.2vw, 1rem); opacity: 0.55; }
.slide-caption { font-size: 0.7rem; opacity: 0.35; }

/* ── Spacing utilities ── */
.mt-sm { margin-top: 20px; }
.mt-md { margin-top: 28px; }
.mt-lg { margin-top: 48px; }
.mb-md { margin-bottom: 28px; }

/* ── Navigation ── */
.nav {
  position: fixed;
  bottom: 22px;
  right: 24px;
  display: flex;
  gap: 10px;
  z-index: 200;
}
.nav button {
  background: rgba(255,255,255,0.15);
  color: white;
  border: 1px solid rgba(255,255,255,0.35);
  padding: 9px 22px;
  font-size: 0.95rem;
  cursor: pointer;
  border-radius: 5px;
  backdrop-filter: blur(4px);
}
.nav button:hover { background: rgba(255,255,255,0.28); }

.counter {
  position: fixed;
  bottom: 26px;
  left: 24px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  z-index: 200;
}