/* Mobile-first: base styles for small screens */
:root {
  --cream: #f7f0e7;
  --cream-dark: #e8dad0;
  --white: #ffffff;
  --ink: #2a2a2a;
  --ink-muted: #555555;
  --oxford-red: #c00d0d;
  --rust: #7c3319;        /* warm terracotta from the poster headings */
  --gold: #c5a777;
  --bronze: #8b5a2b;
  --bronze-light: #c19a6b;
  --green: #297e4c;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
  --header-height: 72px;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --max-width: 720px;
  --font: "Poppins", system-ui, -apple-system, sans-serif;
  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: linear-gradient(160deg, var(--cream) 0%, var(--cream-dark) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--oxford-red);
}

/* College logo strip */
.logo-strip {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  background: #1a1a1a;
  border-bottom: 2px solid rgba(255,255,255,0.08);
}

.logo-strip__item {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 0;
  min-width: 80px;
  padding: 10px 12px;
}

.logo-strip__item img {
  display: block;
  width: 100px;
  height: 36px;
  object-fit: contain;
  object-position: center;
}

.logo-strip__item--white   { background: #ffffff; }
.logo-strip__item--black   { background: #111111; }
.logo-strip__item--oxford-blue { background: #002147; }
.logo-strip__item--forest  { background: #1a3d2e; }
.logo-strip__item--burgundy { background: #6b1c1c; }

@media (min-width: 600px) {
  .logo-strip__item {
    padding: 12px 16px;
  }
  .logo-strip__item img {
    width: 120px;
    height: 44px;
  }
}

@media (min-width: 900px) {
  .logo-strip__item img {
    width: 140px;
    height: 50px;
  }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 240, 231, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  padding: var(--space-sm) var(--space-md);
}

.site-header__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.site-header__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
}

.site-header__title span {
  display: block;
}

.site-header__title .event-name {
  color: var(--rust);
  letter-spacing: 0.01em;
}

.site-header__title .event-date {
  font-family: var(--font);
  color: var(--ink-muted);
  font-weight: 400;
  font-size: 0.85rem;
  letter-spacing: 0;
}

/* Hero */
.hero {
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  text-align: center;
}

.hero__badge {
  display: inline-block;
  background: var(--green);
  color: var(--white);
  font-size: clamp(0.9rem, 2.8vw, 1.1rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.65rem 1.5rem;
  border-radius: 100px;
  margin-bottom: var(--space-lg);
  box-shadow: 0 4px 18px rgba(41, 126, 76, 0.45);
  border: 2px solid rgba(255, 255, 255, 0.35);
}

.hero__title {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 8vw, 3.6rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--rust);
  letter-spacing: -0.01em;
  text-shadow: 0 2px 8px rgba(124, 51, 25, 0.12);
}

.hero__subtitle {
  margin: 0 auto;
  max-width: 36ch;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Event details strip */
.event-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.event-details__item {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow);
  text-align: center;
}

.event-details__item--full {
  grid-column: 1 / -1;
}

.event-details__label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--bronze);
  margin-bottom: 0.25rem;
}

.event-details__value {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
}

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.card__title {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--rust);
}

.card p {
  margin: 0 0 var(--space-md);
  color: var(--ink-muted);
}

.card p:last-child {
  margin-bottom: 0;
}

.card__highlight {
  border-left: 4px solid var(--rust);
  padding-left: var(--space-md);
  margin: var(--space-md) 0;
  font-style: italic;
  color: var(--ink);
}

/* Participating colleges */
.colleges {
  margin-bottom: var(--space-xl);
}

.colleges__title {
  margin: 0 0 var(--space-xs);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  text-align: center;
  color: var(--rust);
}

.colleges__intro {
  margin: 0 0 var(--space-lg);
  text-align: center;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.colleges__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-sm);
}

.college-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.college-card__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 88px;
  padding: var(--space-md) var(--space-lg);
}

.college-card__logo img {
  width: auto;
  max-width: 100%;
  max-height: 56px;
  object-fit: contain;
}

/* Dark backgrounds for white logos */
.college-card--exeter .college-card__logo,
.college-card--magdalen .college-card__logo {
  background: #111111;
}

.college-card--lincoln .college-card__logo {
  background: #002147;
}

.college-card--jesus .college-card__logo {
  background: #1a3d2e;
}

.college-card--sed .college-card__logo {
  background: #6b1c1c;
}

/* Light backgrounds for dark-text logos */
.college-card--wadham .college-card__logo,
.college-card--merton .college-card__logo {
  background: var(--white);
}

/* Poster & map */
.media-block {
  margin-bottom: var(--space-xl);
}

.media-block__figure {
  margin: 0;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.media-block__caption {
  padding: var(--space-md) var(--space-lg);
  font-size: 0.85rem;
  color: var(--ink-muted);
  text-align: center;
}

.media-block__img {
  width: 100%;
}

.media-block__img--map-preview {
  display: block;
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  object-position: top center;
}

/* CTA */
.cta-bar {
  position: sticky;
  bottom: var(--space-md);
  z-index: 50;
  padding: 0 var(--space-md);
  margin-bottom: var(--space-xl);
}

.cta-bar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  width: 100%;
  min-height: 52px;
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: 100px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn--primary {
  background: linear-gradient(135deg, var(--bronze), var(--bronze-light));
  color: var(--white);
  box-shadow: 0 6px 24px rgba(139, 90, 43, 0.35);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(139, 90, 43, 0.45);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn__icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: var(--space-xl) var(--space-md) var(--space-2xl);
}

.site-footer__brand {
  width: 105px;
  max-width: 105px;
  margin: 0 auto var(--space-md);
  opacity: 0.9;
  image-rendering: auto;
}

.site-footer__text {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-muted);
}

/* Tablet and up */
@media (min-width: 600px) {
  .site-header {
    padding: var(--space-md) var(--space-xl);
  }

  .site-header__inner {
    flex-direction: row;
    justify-content: center;
    text-align: center;
  }

  .site-header__title {
    font-size: 1.25rem;
  }

  .event-details {
    grid-template-columns: repeat(3, 1fr);
  }

  .event-details__item--full {
    grid-column: auto;
  }

  .card {
    padding: var(--space-xl);
  }

  .colleges__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .college-card__logo {
    min-height: 96px;
  }

  .college-card__logo img {
    max-height: 64px;
  }
}

/* Desktop */
@media (min-width: 900px) {
  :root {
    --max-width: 860px;
  }

  .site-header__title {
    font-size: 1.45rem;
  }

  .hero {
    padding-top: var(--space-2xl);
  }

  .cta-bar {
    position: static;
    padding: 0;
    margin: var(--space-xl) 0;
  }

  .btn {
    width: auto;
    min-width: 240px;
    margin: 0 auto;
  }

  .cta-bar__inner {
    text-align: center;
  }

  .colleges__grid {
    grid-template-columns: repeat(2, 1fr);
  }