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

:root {
  --ink: #1a1d24;
  --muted: #5a616e;
  --accent: #2b6cb0;
  --card: rgba(255, 255, 255, 0.22);
  --card-strong: rgba(255, 255, 255, 0.38);
  --border: rgba(26, 29, 36, 0.12);
  --shadow: 0 10px 30px rgba(40, 50, 80, 0.10);
  --radius: 16px;
  --maxw: 1120px;
  font-family: "Montserrat", "Segoe UI", Roboto, "Helvetica Neue", Arial, system-ui, sans-serif;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  color: var(--ink);
  line-height: 1.5;
  background-color: #dfe3ec;
  /* Optimized background, webp with jpg fallback via image-set */
  background-image: image-set(
    url("assets/background.webp") type("image/webp"),
    url("assets/background.jpg") type("image/jpeg")
  );
  background-image: -webkit-image-set(
    url("assets/background.webp") type("image/webp"),
    url("assets/background.jpg") type("image/jpeg")
  );
  /* Fallback for browsers without image-set */
  background-image: url("assets/background.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
}

/* Frosted overlay to keep text legible over the photo */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.45) 0%,
    rgba(255, 255, 255, 0.62) 100%
  );
  z-index: -1;
}

/* ---------- Layout ---------- */
.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3.5rem) clamp(1rem, 4vw, 2.5rem) 3rem;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: clamp(1.75rem, 5vw, 3rem);
}

.logo {
  width: clamp(52px, 9vw, 84px);
  height: auto;
  color: var(--ink);
  flex: 0 0 auto;
}

.site-title {
  font-size: clamp(1.3rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

/* Small enough that each tagline sentence stays on a single line on phones */
.site-tagline {
  color: var(--muted);
  font-size: clamp(0.75rem, 2.2vw, 1.05rem);
  margin-top: 0.25rem;
}

/* ---------- Sections ---------- */
.section {
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
}

.section-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Two-column grids for future & past on wide screens */
.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

/* ---------- Event card ---------- */
.event {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.event:hover,
.event:focus-visible {
  transform: translateY(-3px);
  background: var(--card-strong);
  box-shadow: 0 16px 36px rgba(40, 50, 80, 0.18);
  outline: none;
}

/* Each part of the card is its own paragraph — without display:block the
   spans would flow together as one cramped line of text. */
.event-title,
.event-subtitle,
.event-host {
  display: block;
}

.event-title {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.event-title .prefix {
  color: var(--muted);
  font-weight: 700;
}

.event-subtitle {
  color: var(--ink);
  opacity: 0.85;
  margin-top: 0.55rem;
}

.event-host {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 0.55rem;
}

.event-date {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.85rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent);
}

/* Highlighted "next" event */
.section-next .event {
  background: var(--card-strong);
  border-color: rgba(43, 108, 176, 0.35);
  border-left: 5px solid var(--accent);
  padding: 1.5rem 1.6rem;
}

.section-next .event-title {
  font-size: 1.5rem;
}

.badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

/* Dimmed past events */
.section-past .event {
  opacity: 0.72;
}

.section-past .event:hover {
  opacity: 1;
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer a {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .site-header {
    flex-direction: row;
    align-items: center;
  }
}