/* ============================================================
   Data Beers Exeter — Stylesheet
   Palette: Devon red sandstone · amber · Devon green · cream
   ============================================================ */

:root {
  /* Devon / Exeter colour palette */
  --red:        #8B1A1A;   /* Devon red sandstone */
  --red-dark:   #6A1313;
  --red-light:  #B02222;
  --amber:      #C8890A;   /* beer amber / Devon gold */
  --amber-light:#E8A820;
  --green:      #2D5A1B;   /* Devon countryside */
  --green-light:#3A7422;
  --cream:      #FDF8F0;   /* cathedral stone */
  --cream-dark: #F0E8D8;
  --charcoal:   #1C1C1C;
  --mid-grey:   #5A5A5A;
  --light-grey: #E8E0D4;

  /* Typography */
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans:  'Segoe UI', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-pad: 5rem 1.5rem;
  --radius:      6px;
  --max-width:   1100px;

  /* Transitions */
  --trans: 0.25s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background-color: var(--cream);
  color: var(--charcoal);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }

main { flex: 1; }

/* ── Typography helpers ──────────────────────────────────── */
.accent { color: var(--amber); }

h1, h2, h3 { font-family: var(--font-serif); line-height: 1.25; }

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 1rem;
  color: var(--red);
}

.section-intro {
  max-width: 680px;
  color: var(--mid-grey);
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

.inline-link {
  color: var(--amber);
  border-bottom: 1px solid currentColor;
  transition: color var(--trans);
}
.inline-link:hover { color: var(--red); }

/* ── Container ───────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background var(--trans), color var(--trans), transform var(--trans);
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--amber);
  color: #fff;
  border: 2px solid var(--amber);
}
.btn-primary:hover { background: var(--amber-light); border-color: var(--amber-light); }

.btn-outline {
  background: transparent;
  color: var(--cream);
  border: 2px solid var(--cream);
}
.btn-outline:hover { background: var(--cream); color: var(--red); }

/* ── Site Header / Nav ───────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--red);
  box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}

.header-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 70px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.header-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  padding: 3px;
  object-fit: contain;
}

.header-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: bold;
  color: #fff;
  line-height: 1.2;
}
.header-title em { color: var(--amber-light); font-style: normal; }

/* Nav */
.site-nav { margin-left: auto; }

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  display: block;
  padding: 0.45rem 0.9rem;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background var(--trans), color var(--trans);
}
.nav-link:hover,
.nav-link.active {
  background: rgba(255,255,255,0.15);
  color: #fff;
}
.nav-link.active {
  background: var(--amber);
  color: #fff;
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--trans), opacity var(--trans);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--red-dark) 0%, var(--red) 50%, var(--green) 100%);
  color: #fff;
  padding: 5rem 1.5rem 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="30" cy="30" r="1" fill="white" opacity="0.06"/></svg>') repeat;
  pointer-events: none;
}

.hero-content {
  max-width: var(--max-width);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 4rem;
  padding-bottom: 4rem;
  position: relative;
}

.hero-logo {
  width: clamp(180px, 25vw, 280px);
  flex-shrink: 0;
  border-radius: 50%;
  background: #fff;
  padding: 12px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

.hero-text h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 0.5rem;
  color: #fff;
}

.tagline {
  font-size: 1.2rem;
  color: var(--amber-light);
  font-style: italic;
  margin-bottom: 1.25rem;
}

.hero-desc {
  font-size: 1.05rem;
  max-width: 540px;
  color: rgba(255,255,255,0.88);
  margin-bottom: 2rem;
}

.hero-wave {
  height: 80px;
  position: relative;
}
.hero-wave svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* ── Generic Section ─────────────────────────────────────── */
.section { padding: var(--section-pad); }

.section-alt {
  background: var(--cream-dark);
  border-top: 1px solid var(--light-grey);
  border-bottom: 1px solid var(--light-grey);
}

/* ── Page hero (inner pages) ─────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--red-dark) 0%, var(--red) 60%, #5a1010 100%);
  color: #fff;
  padding: 4rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="30" cy="30" r="1" fill="white" opacity="0.06"/></svg>') repeat;
  pointer-events: none;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: #fff;
  position: relative;
}
.page-hero p {
  margin-top: 0.75rem;
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  position: relative;
}

/* ── About cards ─────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}

.about-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  border-top: 4px solid var(--amber);
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  transition: transform var(--trans), box-shadow var(--trans);
}
.about-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.12);
}

.card-icon { margin-bottom: 0.75rem; }

/* Icon colouring via CSS hue-rotate + saturation + brightness.
   Source icons are dark navy (~218° hue). Rotate to each palette colour. */
.card-icon img {
  width: 36px;
  height: 36px;
  display: block;
}
.icon-amber { filter: hue-rotate(182deg) saturate(2)   brightness(1.9); }
.icon-red   { filter: hue-rotate(142deg) saturate(1.5) brightness(1.5); }
.icon-green { filter: hue-rotate(245deg) saturate(1.2) brightness(1.1); }

.about-card h3 {
  color: var(--red);
  margin-bottom: 0.6rem;
  font-size: 1.15rem;
}

/* ── Organisers ──────────────────────────────────────────── */
.organisers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem;
  margin-bottom: 2.5rem;
}

.organiser-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  border-bottom: 4px solid var(--green);
  transition: transform var(--trans);
}
.organiser-card:hover { transform: translateY(-4px); }

.organiser-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.organiser-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(100%);
  margin: 0 auto 1rem;
  display: block;
  border: 3px solid var(--light-grey);
}

/* ── Partners section ────────────────────────────────────── */
.partner-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  border-left: 5px solid var(--amber);
  margin-bottom: 1.5rem;
}
.partner-card:last-child { margin-bottom: 0; }

.partner-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 0.25rem;
}

.partner-logo {
  width: 180px;
  height: 80px;
  object-fit: contain;
  object-position: right center;
  display: block;
  flex-shrink: 0;
}

.partner-logo-large {
  width: 260px;
  height: 120px;
  object-fit: contain;
  object-position: right center;
  display: block;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .partner-header-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .partner-logo,
  .partner-logo-large {
    width: 100%;
    max-width: 200px;
    height: auto;
    object-position: left center;
    margin-top: 0.75rem;
  }
}

.partner-name {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--red);
  margin-bottom: 0.25rem;
}

.partner-type {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--mid-grey);
  margin-bottom: 1rem;
}

.partner-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.25rem;
}

.map-embed {
  width: 100%;
  height: 280px;
  border: 0;
  border-radius: var(--radius);
  display: block;
}

@media (max-width: 680px) {
  .partner-body { grid-template-columns: 1fr; }
  .map-embed { height: 220px; }
}

.organiser-card h3 {
  color: var(--charcoal);
  margin-bottom: 0.2rem;
}

.organiser-role {
  color: var(--amber);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}

.organiser-affil {
  color: var(--mid-grey);
  font-size: 0.85rem;
  font-style: italic;
  margin-bottom: 0.75rem;
}

.organiser-cta { color: var(--mid-grey); }

/* ── Past Events ─────────────────────────────────────────── */
.events-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.event-card {
  display: flex;
  gap: 1.5rem;
  background: #fff;
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  border-left: 5px solid var(--red);
  transition: transform var(--trans);
}
.event-card:hover { transform: translateX(4px); }

.event-date {
  flex-shrink: 0;
  width: 70px;
  text-align: center;
  background: var(--red);
  color: #fff;
  border-radius: var(--radius);
  padding: 0.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
}

.event-month {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.event-year {
  font-size: 1rem;
  font-family: var(--font-serif);
  font-weight: bold;
}

.event-details h3 {
  color: var(--red);
  margin-bottom: 0.2rem;
  font-size: 1.15rem;
}

.event-venue {
  font-size: 0.85rem;
  color: var(--mid-grey);
  margin-bottom: 0.6rem;
  font-style: italic;
}

.event-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.tag {
  display: inline-block;
  background: var(--cream-dark);
  color: var(--green);
  border: 1px solid var(--light-grey);
  border-radius: 999px;
  padding: 0.15rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
}

/* ── Paired CTA ──────────────────────────────────────────── */
.cta-pair {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cta-block {
  padding: 3rem 0;
}

.cta-block + .cta-block {
  border-top: 1px solid var(--light-grey);
}

.cta-divider { display: none; }

/* ── Site Footer ─────────────────────────────────────────── */
.site-footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 2.5rem 1.5rem;
}

.footer-logo {
  width: 60px;
  border-radius: 50%;
  background: #fff;
  padding: 5px;
  margin: 0 auto 1rem;
}

.site-footer p { font-size: 0.9rem; line-height: 1.8; }
.footer-sub { font-size: 0.82rem; color: rgba(255,255,255,0.45); }
.site-footer .inline-link { color: var(--amber-light); border-color: var(--amber-light); }

.footer-social {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 1rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  opacity: 0.65;
  transition: opacity 0.2s;
  cursor: pointer;
}

.footer-social a:hover { opacity: 1; }

.footer-icon {
  width: 22px;
  height: 22px;
  display: block;
  filter: brightness(0) invert(1);
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--red-dark);
    padding: 1rem;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  }
  .site-nav.open { display: block; }

  .site-nav ul { flex-direction: column; gap: 0.25rem; }
  .nav-link { padding: 0.65rem 1rem; font-size: 1rem; }

  .hero-content { flex-direction: column; text-align: center; gap: 2rem; padding-bottom: 3rem; }
  .hero-desc { margin-inline: auto; }

  .event-card { flex-direction: column; }
  .event-date { width: 100%; flex-direction: row; padding: 0.5rem 1rem; gap: 0.5rem; justify-content: flex-start; }
}

@media (max-width: 480px) {
  .header-title { display: none; }
}

/* ── Speaker photo placeholder ── */
.speaker-photo-placeholder {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background-color: var(--light-grey);
  margin: 0 auto 1rem;
}

/* ── Event photo gallery ── */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.photo-thumb {
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: zoom-in;
}

.event-photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.photo-thumb:hover .event-photo {
  transform: scale(1.04);
  opacity: 0.9;
}

/* ── Lightbox ── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
.lightbox.open { display: flex; }

.lightbox-img {
  max-width: 90vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 8px 48px rgba(0,0,0,0.6);
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.75;
  transition: opacity 0.2s;
}
.lightbox-close:hover { opacity: 1; }

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: none;
  color: #fff;
  font-size: 3rem;
  line-height: 1;
  padding: 0.5rem 1rem;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background 0.2s;
  user-select: none;
}
.lightbox-prev:hover,
.lightbox-next:hover { background: rgba(255,255,255,0.25); }
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

.lightbox-counter {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}