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

:root {
  --color-primary: #0b3156;
  --color-primary-dark: #07213b;
  --color-primary-light: #164e83;
  --color-accent: #0066cc;
  --color-accent-hover: #004c99;
  --color-bg-page: #f4f6f9;
  --color-bg-card: #ffffff;
  --color-text-main: #2b3035;
  --color-text-muted: #606770;
  --color-border: #e2e8f0;
  --color-border-light: #edf2f7;
  --color-footer-bg: #0d1b2a;
  --color-footer-text: #e0e6ed;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1120px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg-page);
  line-height: 1.65;
  font-size: 16px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* --- Górna belka logotypów UE / RP / FNP / PAN --- */
.eu-banner-wrapper {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
}

.eu-banner-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.eu-logos {
  flex: 1;
  max-width: 980px;
}

.eu-banner-img {
  max-height: 75px;
  width: auto;
  object-fit: contain;
}

.institute-logo {
  flex-shrink: 0;
}

.unipress-logo-img {
  max-height: 65px;
  width: auto;
  object-fit: contain;
}

/* --- Nagłówek projektu --- */
.project-header {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #ffffff;
  padding: 2.25rem 0;
  border-bottom: 3px solid var(--color-accent);
}

.project-badge {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.15);
  color: #e2e8f0;
  font-size: 0.825rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
}

.project-title {
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.project-title a {
  color: #ffffff;
  text-decoration: none;
}

.project-title a:hover {
  text-decoration: none;
  color: #f0f4f8;
}

.project-subtitle {
  font-size: 1.05rem;
  color: #cbd5e1;
  font-weight: 400;
}

/* --- Menu nawigacji poziomej --- */
.main-nav {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 0;
}

.nav-item {
  display: flex;
}

.nav-link {
  display: block;
  padding: 0.85rem 0.75rem;
  font-size: 0.915rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-accent);
  background-color: #f8fafc;
  text-decoration: none;
  border-bottom-color: #cbd5e1;
}

.nav-link.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  background-color: #f0f7ff;
}

/* --- Przełącznik języka (PL / EN) --- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background-color: #f1f5f9;
  border: 1px solid var(--color-border);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 700;
  flex-shrink: 0;
}

.lang-badge {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  transition: all 0.15s ease;
}

.lang-badge:hover {
  color: var(--color-accent);
  text-decoration: none;
  background-color: #ffffff;
}

.lang-badge.active {
  background-color: var(--color-accent);
  color: #ffffff;
}

.lang-divider {
  color: #94a3b8;
  font-size: 0.75rem;
}

/* --- Główna sekcja treści --- */
.site-main {
  flex: 1;
  padding: 2.25rem 0 3.5rem;
}

.main-content-container {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.page-header-box {
  background-color: #ffffff;
  padding: 1.75rem 2rem;
  border-radius: var(--radius-md);
  border-left: 5px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.page-title {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.page-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.content-body {
  background-color: var(--color-bg-card);
  padding: 2.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

/* Typografia w treści */
.content-body h2 {
  font-size: 1.45rem;
  color: var(--color-primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-border-light);
}

.content-body h2:first-child {
  margin-top: 0;
}

.content-body h3 {
  font-size: 1.2rem;
  color: var(--color-primary-light);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.content-body p {
  margin-bottom: 1.15rem;
}

.content-body ul, .content-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.content-body li {
  margin-bottom: 0.4rem;
}

/* Karty / Elementy prezentacji danych */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin: 1.75rem 0;
}

.info-card {
  background-color: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.info-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.info-card-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.info-card-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
}

.info-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* Sekcja aktualności */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.news-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.news-date {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.news-title {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.news-content {
  font-size: 0.95rem;
  color: var(--color-text-main);
  margin-bottom: 0;
}

/* Sekcja Publikacji */
.publications-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.publication-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary-light);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.publication-card:hover {
  box-shadow: var(--shadow-md);
}

.publication-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.pub-type-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background-color: #e6f0fa;
  color: var(--color-primary);
}

.pub-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

.publication-title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-primary);
  margin-bottom: 0.45rem;
}

.publication-title a {
  color: var(--color-primary);
  text-decoration: none;
}

.publication-title a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.publication-authors {
  font-size: 0.95rem;
  color: var(--color-text-main);
  margin-bottom: 0.35rem;
}

.publication-meta {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.publication-meta .pub-journal {
  font-style: italic;
  color: #334155;
}

.publication-comment {
  margin-top: 0.6rem;
  padding: 0.4rem 0.75rem;
  background-color: #f8fafc;
  border-left: 3px solid #94a3b8;
  border-radius: 2px;
  font-size: 0.875rem;
  color: #475569;
}

.publication-doi {
  margin-top: 0.7rem;
}

.pub-doi-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.8rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background-color: #f1f5f9;
  color: var(--color-accent);
  border: 1px solid #cbd5e1;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.pub-doi-badge:hover {
  background-color: #e2e8f0;
  border-color: #94a3b8;
  text-decoration: none;
  color: var(--color-accent-hover);
}

/* Międzynarodowy Komitet Naukowy (MKN) */
.mkn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0 2.5rem;
}

.mkn-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary-light);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.mkn-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.mkn-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  background-color: #e6f0fa;
  border: 1px solid #cce0f5;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
}

.mkn-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.mkn-affiliation {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Lider / Zespół box */
.leader-box {
  background-color: #f0f7ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.leader-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: #1d4ed8;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.leader-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.leader-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  margin-bottom: 0;
}

/* Zespół - Karty pracowników */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.35rem;
  margin: 1.5rem 0 2.5rem;
}

.team-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.6rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  flex-direction: column;
}

.team-card.leader {
  border-left: 4px solid var(--color-accent);
  background-color: #fbfdff;
}

.team-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.team-card-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: #1d4ed8;
  background-color: #eff6ff;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.team-card-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.15rem;
}

.team-card-role {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.4rem;
}

.team-card-desc {
  font-size: 0.915rem;
  color: #3e444a;
  line-height: 1.55;
  margin-top: 0.35rem;
}

/* Ryciny i diagramy */
.figure-box {
  margin: 1.75rem 0;
  text-align: center;
  background-color: #fbfcfd;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.figure-box img {
  margin: 0 auto;
  border-radius: var(--radius-sm);
  max-height: 480px;
}

.figure-caption {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
  font-style: italic;
}

/* --- Stopka --- */
.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 3rem 0 1.5rem;
  border-top: 4px solid var(--color-accent);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-col h3 {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.funding-disclaimer {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 1rem;
  color: #cbd5e1;
}

.funding-stats {
  font-size: 0.85rem;
  line-height: 1.5;
  color: #94a3b8;
}

.footer-col p {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
  color: #cbd5e1;
}

.footer-col strong {
  color: #ffffff;
}

.footer-col a {
  color: #60a5fa;
  text-decoration: none;
}

.footer-col a:hover {
  color: #93c5fd;
  text-decoration: underline;
}

.footer-links {
  list-style: none;
  font-size: 0.875rem;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
  text-align: center;
  font-size: 0.825rem;
  color: #94a3b8;
}

/* --- Responsywność --- */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
  
  .eu-banner-container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .eu-banner-img {
    max-height: 58px;
  }
}

@media (max-width: 860px) {
  .nav-list {
    flex-direction: column;
    gap: 0;
  }
  
  .nav-link {
    padding: 0.75rem 0.5rem;
    border-bottom: none;
    border-left: 3px solid transparent;
  }
  
  .nav-link.active {
    border-bottom: none;
    border-left-color: var(--color-accent);
  }
}

@media (max-width: 640px) {
  .project-title {
    font-size: 1.35rem;
  }
  
  .content-body {
    padding: 1.25rem;
  }
}