/* ==========================================================================
   DIEM — Dubrovnik International Economic Meeting
   Design system: deep wine/maroon primary (#902541) + orange accent (#ff6600)
   ========================================================================== */

:root {
  --color-primary: #902541;
  --color-primary-dark: #6c1c31;
  --color-primary-light: #b13a5a;
  --color-accent: #ff6600;
  --color-accent-dark: #d95700;
  --color-ink: #241417;
  --color-text: #2c2226;
  --color-muted: #6f6067;
  --color-bg: #ffffff;
  --color-cream: #faf6f4;
  --color-cream-dark: #f2e9e6;
  --color-border: #e7dcd8;
  --shadow-sm: 0 1px 3px rgba(36, 20, 23, 0.08);
  --shadow-md: 0 6px 20px rgba(36, 20, 23, 0.12);
  --shadow-lg: 0 16px 40px rgba(36, 20, 23, 0.16);
  --radius: 10px;
  --radius-lg: 16px;
  --container: 1180px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-accent); }
h1, h2, h3, h4 { font-family: var(--font-serif); color: var(--color-ink); line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.4em; }
hr { border: none; border-top: 1px solid var(--color-border); margin: 2.5em 0; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: .75em 1em; border-bottom: 1px solid var(--color-border); }
th { font-family: var(--font-serif); color: var(--color-primary); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 3.5rem 0; }
.section--tight { padding: 2rem 0; }
.home-sponsor-note { padding-bottom: 0; }
.section--cream { background: var(--color-cream); }
.section--primary { background: var(--color-primary); color: #fff; }
.section--primary h2, .section--primary h3 { color: #fff; }
.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: .6em;
}
.lead { font-size: 1.15rem; color: var(--color-muted); }
.text-center { text-align: center; }
.muted { color: var(--color-muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: .75em 1.5em;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); color: #fff; box-shadow: var(--shadow-md); }
.hero .btn-primary { background: var(--color-primary); }
.hero .btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline { background: transparent; border-color: #fff; color: #fff; }
.btn-outline:hover { background: #fff; color: var(--color-primary); }
.btn-maroon { background: var(--color-primary); color: #fff; }
.btn-maroon:hover { background: var(--color-primary-dark); color: #fff; box-shadow: var(--shadow-md); }
.btn-ghost { background: var(--color-cream-dark); color: var(--color-primary); }
.btn-ghost:hover { background: var(--color-border); color: var(--color-primary); }
.btn[aria-disabled="true"], .btn.btn-soon { background: #e6e0de; color: #8a7d80; cursor: not-allowed; }
.btn.btn-soon:hover { transform: none; }
.btn-row { display: flex; flex-wrap: wrap; gap: .9rem; margin: 1.5rem 0; }

/* Header / Nav */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}
.site-header__bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 1.5rem;
  max-width: var(--container);
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: .7rem; }
.brand__mark { width: 44px; height: 44px; flex-shrink: 0; }
.brand__mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__title { font-family: var(--font-serif); font-weight: 700; font-size: 1.15rem; color: var(--color-ink); }
.brand__subtitle { font-size: .72rem; color: var(--color-muted); letter-spacing: .04em; }

.nav-toggle {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: .5em;
}
.nav-toggle span { width: 26px; height: 2px; background: var(--color-ink); border-radius: 2px; }

.main-nav { display: flex; }
.main-nav > ul { display: flex; align-items: center; gap: .2rem; list-style: none; margin: 0; padding: 0; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a, .main-nav > ul > li > button.nav-top-link {
  display: block; padding: .9rem .8rem; font-weight: 600; font-size: .93rem;
  color: var(--color-ink); background: none; border: none; cursor: pointer; font-family: var(--font-sans);
  white-space: nowrap;
}
.main-nav > ul > li > a:hover, .main-nav > ul > li > button.nav-top-link:hover,
.main-nav > ul > li.is-open > button.nav-top-link { color: var(--color-primary); }
.main-nav .dropdown {
  position: absolute; top: 100%; left: 0;
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  min-width: 240px; padding: .5rem; list-style: none; margin: 0;
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .15s ease, transform .15s ease, visibility .15s ease;
}
.main-nav li.is-open .dropdown, .main-nav li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.main-nav .dropdown a {
  display: block; padding: .55em .75em; border-radius: 6px; font-size: .9rem; color: var(--color-text);
}
.main-nav .dropdown a:hover { background: var(--color-cream); color: var(--color-primary); }
.main-nav .dropdown-group-label {
  margin-top: .5rem; padding: .6em .75em .3em; font-size: .76rem; font-weight: 700;
  letter-spacing: .09em; text-transform: uppercase; color: var(--color-accent);
  border-top: 1px solid var(--color-border);
}

.nav-cta { margin-left: .5rem; }

@media (max-width: 960px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 68px; left: 0; right: 0; bottom: 0;
    background: #fff; flex-direction: column; padding: 1rem 1.5rem; overflow-y: auto;
    transform: translateX(100%); transition: transform .2s ease;
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; align-items: stretch; width: 100%; }
  .main-nav > ul > li > a, .main-nav > ul > li > button.nav-top-link { padding: .8rem .2rem; width: 100%; text-align: left; }
  .main-nav .dropdown {
    position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none;
    border: none; display: none; padding-left: .5rem; margin-bottom: .5rem;
  }
  .main-nav li.is-open .dropdown { display: block; }
  .nav-cta { margin: 1rem 0 0; }
}

/* Hero */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 55%, var(--color-ink) 100%);
}
.hero__media { position: absolute; inset: 0; z-index: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; opacity: 1; }
.hero__content { position: relative; z-index: 1; padding-top: 5rem; padding-bottom: 7.4rem; }
.hero__meta { display: flex; flex-wrap: wrap; gap: .9rem 1.6rem; margin: 1.6rem 0 3.2rem; font-size: .93rem; max-width: none; }
.hero__meta span { display: flex; align-items: center; gap: .4em; white-space: nowrap; }
.hero__meta .icon { width: 15px; height: 15px; flex-shrink: 0; color: var(--color-primary); }
.hero__badge {
  display: inline-block; padding: .3em .9em; border-radius: 999px;
  background: var(--color-primary); color: #fff; font-size: .78rem; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase; margin-bottom: 1.2rem;
}
.hero h1 { color: #fff; max-width: 16em; margin-bottom: .3em; }
.hero p.lead { color: rgba(255,255,255,.88); max-width: 42em; margin-bottom: 1.6rem; }

.page-hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff; padding: 3rem 0 2.6rem;
}
.page-hero h1 { color: #fff; margin-bottom: .3em; }
.page-hero .lead { color: rgba(255,255,255,.85); margin: 0; }
.breadcrumb { font-size: .82rem; color: rgba(255,255,255,.7); margin-bottom: .8rem; }
.breadcrumb a { color: rgba(255,255,255,.85); }
.breadcrumb a:hover { color: #fff; }

/* Key facts strip */
.key-facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.2rem; margin-top: -3rem; position: relative; z-index: 2;
}
.key-fact {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 1.4rem 1.3rem; border-top: 4px solid var(--color-primary);
}
.key-fact__label { font-size: .74rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--color-muted); margin-bottom: .4em; }
.key-fact__value { font-family: var(--font-serif); font-size: 1.25rem; color: var(--color-primary); font-weight: 700; }

/* Grids & cards */
.grid { display: grid; gap: 1.6rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 880px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 1.6rem; box-shadow: var(--shadow-sm); transition: box-shadow .15s ease, transform .15s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.card h3 { margin-bottom: .4em; }
.card--soft { background: var(--color-cream); border: none; }

.speaker-card { display: flex; flex-direction: column; gap: 1rem; text-decoration: none; cursor: pointer; }
.speaker-card__photo {
  width: 100%; aspect-ratio: 1/1; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--color-cream-dark);
}
.speaker-card__photo img { width: 100%; height: 100%; object-fit: cover; }
.speaker-card__title { color: var(--color-accent-dark); font-weight: 600; font-size: .95rem; }

.person-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem 1.5rem; }
@media (max-width: 700px) { .person-list { grid-template-columns: 1fr; } }
.person-list li { padding: .5em 0; border-bottom: 1px solid var(--color-border); font-size: .95rem; }
.person-list strong { color: var(--color-ink); }

.topic-pills { display: flex; flex-wrap: wrap; gap: .6rem; list-style: none; padding: 0; margin: 1.5rem 0; }
.topic-pills li {
  background: var(--color-cream); border: 1px solid var(--color-border); color: var(--color-primary);
  padding: .5em 1em; border-radius: 999px; font-size: .88rem; font-weight: 600;
}

/* Timeline (Important Dates) */
.timeline { list-style: none; margin: 2rem 0; padding: 0; }
.timeline li {
  display: grid; grid-template-columns: 200px 1fr; gap: 1.2rem;
  padding: 1.1rem 0; border-bottom: 1px solid var(--color-border);
}
.timeline li:last-child { border-bottom: none; }
.timeline .date { font-family: var(--font-serif); font-weight: 700; color: var(--color-primary); }
.timeline .date .tbd { color: var(--color-accent-dark); font-style: italic; font-family: var(--font-sans); font-weight: 600; }
@media (max-width: 640px) { .timeline li { grid-template-columns: 1fr; gap: .3rem; } }

/* Fee table */
.fee-table th { background: var(--color-cream); }
.fee-table td:last-child, .fee-table th:last-child { text-align: right; }

/* Past conferences */
.conf-card {
  border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden;
  background: #fff; box-shadow: var(--shadow-sm); scroll-margin-top: 90px;
}
.conf-card__head {
  background: var(--color-primary); color: #fff; padding: 1.2rem 1.5rem;
  display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: .5rem;
}
.conf-card__head h3 { color: #fff; margin: 0; }
.conf-card__body { padding: 1.4rem 1.5rem; }
.conf-card__links { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1rem; }
.conf-card__links a {
  font-size: .85rem; font-weight: 600; padding: .4em .9em; border-radius: 999px;
  background: var(--color-cream); color: var(--color-primary); border: 1px solid var(--color-border);
}
.conf-card__links a:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* Journal cards */
.journal-card { display: flex; gap: 1.2rem; align-items: flex-start; }
.journal-card img { width: 76px; border-radius: 6px; border: 1px solid var(--color-border); flex-shrink: 0; }
.journal-card h3 { font-size: 1.05rem; margin-bottom: .3em; }
.journal-card .meta { font-size: .82rem; color: var(--color-muted); }
.journal-card .hl { color: var(--color-accent); }

/* Sponsor / logo strip */
.logo-strip { display: flex; flex-wrap: wrap; gap: 2rem; align-items: center; justify-content: center; }
.logo-strip img { max-height: 56px; width: auto; filter: grayscale(15%); opacity: .9; }
.logo-strip a { display: flex; align-items: center; }

/* Photo strip */
.photo-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: .8rem; margin: 1.5rem 0; }
.photo-strip img { border-radius: var(--radius); aspect-ratio: 4/3; object-fit: cover; width: 100%; }
@media (max-width: 700px) { .photo-strip { grid-template-columns: repeat(2, 1fr); } }

/* Notice / callout boxes */
.callout { border-left: 4px solid var(--color-accent); background: var(--color-cream); padding: 1.1rem 1.4rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 1.5rem 0; }
.callout--soon { border-left-color: var(--color-primary); }
.callout p:last-child { margin-bottom: 0; }

/* Two-column content layout with side info card */
.content-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 2.5rem; align-items: start; }
@media (max-width: 880px) { .content-layout { grid-template-columns: 1fr; } }
.side-card { background: var(--color-cream); border-radius: var(--radius-lg); padding: 1.6rem; position: sticky; top: 90px; }
.side-card h4 { font-size: 1rem; color: var(--color-primary); margin-bottom: .8em; }
.side-card ul { list-style: none; padding: 0; margin: 0; }
.side-card li { margin-bottom: .7em; }
.side-card a { font-weight: 600; font-size: .92rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; margin: 2rem 0; }
.contact-item { background: var(--color-cream); border-radius: var(--radius-lg); padding: 1.4rem; }
.contact-item .eyebrow { margin-bottom: .3em; }
.social-links { display: flex; flex-direction: column; gap: .7rem; }
.social-links a { display: flex; align-items: center; gap: .7em; font-weight: 600; color: var(--color-ink); }
.social-links a:hover { color: var(--color-primary); }
.social-links .icon-badge {
  width: 30px; height: 30px; border-radius: 50%; background: transparent;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: transform .15s ease;
}
.social-links a:hover .icon-badge { transform: scale(1.1); }

/* Map embed */
.map-embed {
  border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border); margin: 1.5rem 0 2.5rem; aspect-ratio: 16/9;
}
.map-embed iframe { width: 100%; height: 100%; border: 0; display: block; }
@media (max-width: 600px) { .map-embed { aspect-ratio: 4/5; } }

/* Footer */
.site-footer { background: var(--color-ink); color: rgba(255,255,255,.8); padding: 3.5rem 0 1.5rem; margin-top: 3rem; }
.site-footer h4 { color: #fff; font-family: var(--font-sans); font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 1em; }
.site-footer a { color: rgba(255,255,255,.75); }
.site-footer a:hover { color: var(--color-accent); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: .55em; font-size: .92rem; }
.footer-brand__title { font-family: var(--font-serif); font-size: 1.3rem; color: #fff; }
.social-row { display: flex; gap: .8rem; margin-top: 1.2rem; }
.social-row a {
  width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: center; transition: background .15s ease;
}
.social-row a:hover { background: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 2.5rem; padding-top: 1.5rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .8rem; font-size: .82rem; color: rgba(255,255,255,.55);
}
.footer-bottom a { color: rgba(255,255,255,.55); }

/* Gallery grid — "justified" row layout: each thumb keeps its own aspect ratio
   (landscape photos wide, portrait photos narrow/tall) at a fixed row height,
   close to the source thumbnail's native resolution to avoid upscaling blur. */
.gallery-grid {
  display: flex; flex-wrap: wrap; gap: .5rem; margin: 2rem 0;
}
.gallery-thumb {
  display: block; height: 150px; border-radius: 8px; overflow: hidden;
  aspect-ratio: var(--ar, 3/2);
  background: var(--color-cream-dark); border: none; padding: 0; cursor: zoom-in;
  position: relative; flex-grow: 0;
}
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .2s ease; }
.gallery-thumb:hover img { transform: scale(1.06); }
@media (max-width: 700px) { .gallery-thumb { height: 110px; } }

/* Fixed-column variant: for small curated galleries (e.g. venue photos) —
   predictable 2-per-row on mobile, 4-per-row on desktop, uniformly cropped. */
.gallery-grid.gallery-grid--fixed { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
.gallery-grid.gallery-grid--fixed .gallery-thumb { height: auto; width: 100%; aspect-ratio: 4/3; }
@media (min-width: 640px) {
  .gallery-grid.gallery-grid--fixed { grid-template-columns: repeat(4, 1fr); }
}
.gallery-count { color: var(--color-muted); }
.gallery-nav { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1.5rem 0; }
.gallery-nav a {
  font-size: .85rem; font-weight: 600; padding: .4em 1em; border-radius: 999px;
  background: var(--color-cream); color: var(--color-primary); border: 1px solid var(--color-border);
}
.gallery-nav a[aria-current="page"] { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.gallery-nav a:hover { background: var(--color-primary); color: #fff; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 1000; background: rgba(20, 10, 12, .94);
  display: none; align-items: center; justify-content: center; padding: 2rem;
}
.lightbox.is-open { display: flex; }
.lightbox__img-wrap { max-width: 90vw; max-height: 82vh; display: flex; align-items: center; justify-content: center; }
.lightbox img { max-width: 90vw; max-height: 82vh; border-radius: 6px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox__close, .lightbox__prev, .lightbox__next {
  position: absolute; background: rgba(255,255,255,.12); color: #fff; border: none;
  width: 48px; height: 48px; border-radius: 50%; font-size: 1.4rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: background .15s ease;
}
.lightbox__close:hover, .lightbox__prev:hover, .lightbox__next:hover { background: var(--color-accent); }
.lightbox__close { top: 1.2rem; right: 1.2rem; }
.lightbox__prev { left: 1.2rem; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 1.2rem; top: 50%; transform: translateY(-50%); }
.lightbox__counter {
  position: absolute; bottom: 1.2rem; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.8); font-size: .85rem; letter-spacing: .04em;
}
@media (max-width: 700px) {
  .lightbox__prev, .lightbox__next { width: 40px; height: 40px; font-size: 1.1rem; }
  .lightbox__close { width: 40px; height: 40px; }
}

/* 404 */
.error-page { text-align: center; padding: 6rem 0; }
.error-page h1 { font-size: 5rem; color: var(--color-primary); }

/* Skip link */
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--color-primary); color: #fff;
  padding: .8em 1.2em; z-index: 200; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }