/* ============================================
   Biovalley Group S.p.A. - Stylesheet
   Brand color: #0079a0
   ============================================ */

/* --- Custom Properties --- */
:root {
  --color-primary: #0079a0;
  --color-primary-dark: #005c7a;
  --color-primary-darker: #004a63;
  --color-primary-light: #33a3c4;
  --color-primary-bg: #e8f4f8;
  --color-text: #1a1a2e;
  --color-text-light: #4a5568;
  --color-text-muted: #718096;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-bg-dark: #0a1628;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.15rem; }

p + p { margin-top: 1rem; }

.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-white);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 1rem auto 0;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo img {
  height: 64px;
  width: auto;
}

.logo:hover {
  color: var(--color-primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown-toggle::after {
  content: '';
  border: 4px solid transparent;
  border-top-color: currentColor;
  margin-top: 2px;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.5rem 1.25rem;
  border-radius: 0;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.lang-switch a {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 0;
  color: var(--color-text-muted);
}

.lang-switch a.active {
  background: var(--color-primary);
  color: var(--color-white);
}

.lang-switch a:hover:not(.active) {
  background: var(--color-bg-alt);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */

.logo-hero {
  background-image: url('/img/hero-bg.jpg');
  background-repeat: no-repeat;
}

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary-darker) 50%, var(--color-primary) 100%);
  color: var(--color-white);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.25rem;
  color: var(--color-white);
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero h1 span {
  color: var(--color-primary-light);
}

.hero p {
  font-size: 1.25rem;
  line-height: 1.8;
  max-width: 640px;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.hero-badges {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-white);
  backdrop-filter: blur(4px);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-outline-dark {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline-dark:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 2rem;
  transition: all var(--transition);
}

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

/* --- Sector Cards (homepage) --- */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.sector-card {
  text-align: center;
  padding: 2.5rem 2rem;
}

.sector-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-bg);
  border-radius: 50%;
  color: var(--color-primary);
}

.sector-icon svg {
  width: 32px;
  height: 32px;
}

.sector-card h3 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.sector-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* --- Team Cards --- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.team-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.team-photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--color-primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.team-photo-placeholder {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-primary-bg), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.75rem;
  font-weight: 700;
}

.team-info h3 {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
}

.team-role {
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.team-bio {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* --- Portfolio / Partecipazioni --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.portfolio-card {
  display: flex;
  flex-direction: column;
}

.portfolio-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.portfolio-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  object-fit: contain;
  background: var(--color-bg-alt);
  padding: 6px;
  flex-shrink: 0;
}

.portfolio-logo-placeholder {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  flex-shrink: 0;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 700;
}

.portfolio-card h3 {
  font-size: 1.1rem;
}

.portfolio-sector {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border-radius: 100px;
  margin-top: 0.25rem;
}

.portfolio-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  flex-grow: 1;
}

.portfolio-card .portfolio-link {
  margin-top: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.portfolio-card .portfolio-link::after {
  content: '\2192';
}

/* --- Portfolio Preview (homepage) --- */
.portfolio-preview-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

.portfolio-preview-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  transition: all var(--transition);
  text-decoration: none;
  min-width: 140px;
}

.portfolio-preview-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.portfolio-preview-item span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-primary-bg);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
  padding-left: 2rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-primary-bg);
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}

.timeline-item h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.timeline-item p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* --- Investment Criteria --- */
.criteria-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.criteria-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.criteria-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--color-primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.criteria-icon svg {
  width: 20px;
  height: 20px;
}

.criteria-item p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* --- ChemoMaker --- */
.chemo-phases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.chemo-phase {
  position: relative;
  padding-left: 3.5rem;
}

.chemo-phase-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.chemo-phase h4 {
  margin-bottom: 0.5rem;
}

.chemo-phase p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--color-primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-info-item strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

.contact-info-item span,
.contact-info-item a {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* Contact form */
.contact-form .form-group {
  margin-bottom: 1.25rem;
}

.contact-form label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 121, 160, 0.1);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-feedback {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  border-radius: var(--radius);
  display: none;
}

.form-feedback--success {
  display: block;
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.form-feedback--error {
  display: block;
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.form-privacy-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary-darker) 100%);
  color: var(--color-white);
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.page-hero p {
  font-size: 1.15rem;
  opacity: 0.85;
  max-width: 600px;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links a {
  display: block;
  padding: 0.3rem 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a:hover {
  color: rgba(255, 255, 255, 0.7);
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

/* --- Utilities --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .sectors-grid {
    grid-template-columns: 1fr;
  }
  .chemo-phases {
    grid-template-columns: 1fr;
  }
  .criteria-list {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}



@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }


  .hero {
    min-height: 70vh;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero p {
    font-size: 1.05rem;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    background: var(--color-white);
    padding: 2rem 1.5rem;
    gap: 0.5rem;
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
  }

  .nav.open {
    transform: translateX(0);
  }

  .nav a {
    font-size: 1.05rem;
    padding: 0.75rem 1rem;
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding-left: 1rem;
  }

  .lang-switch {
    margin-left: 0;
    margin-top: 1rem;
    align-self: flex-start;
  }

  .menu-toggle {
    display: flex;
  }

  .section {
    padding: 3.5rem 0;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .team-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  
  .hero h1 {
    font-size: 1.75rem;
  }

  .hero-badges {
    flex-direction: column;
  }

  .page-hero {
    padding: 6rem 0 3rem;
  }
}