/* ═══════════════════════════════════════════════════════════════════════════
   Sidera s.r.l. — Main Stylesheet
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Custom Fonts ─────────────────────────────────────────────────────── */
@font-face {
  font-family: 'RageItalic';
  src: url('../fonts/RageItalic.ttf') format('truetype');
  font-weight: normal;
  font-style: italic;
  font-display: swap;
}

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

:root {
  --primary: #1a3a5c;
  --primary-dark: #0d2240;
  --accent: #4a90d9;
  --accent-light: #e8f0fe;
  --text: #1a1a2e;
  --text-light: #555;
  --text-muted: #888;
  --bg: #f8f9fc;
  --white: #ffffff;
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(255,255,255,0.3);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  line-height: 1.2;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ═══════════════════════════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(26, 58, 92, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(13, 34, 64, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--white);
}

.nav-logo-img {
  height: 56px;
  width: auto;
  object-fit: contain;
  background: rgba(255,255,255,0.9);
  border-radius: 8px;
  padding: 4px 8px;
  transition: var(--transition);
}

.nav-logo-text {
  font-family: 'RageItalic', 'Playfair Display', serif;
  font-size: 28px;
  font-weight: normal;
  font-style: italic;
  letter-spacing: 2px;
}

.nav-logo-sub {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  opacity: 0.6;
  display: block;
  margin-top: -2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.3px;
  text-decoration: none;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--primary-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 40px 40px;
    gap: 24px;
    transition: right var(--transition);
    box-shadow: -10px 0 40px rgba(0,0,0,0.3);
  }

  .nav-links.open { right: 0; }

  .nav-links a { font-size: 16px; }

  .mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
  }
  .mobile-overlay.active { display: block; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a3a5c 0%, #0d2240 60%, #091a33 100%);
  overflow: hidden;
}

/* Animated geometric shapes */
.hero-shapes {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.06;
  background: white;
}

.hero-shape:nth-child(1) {
  width: 600px; height: 600px;
  top: -200px; right: -100px;
  animation: float1 20s ease-in-out infinite;
}
.hero-shape:nth-child(2) {
  width: 400px; height: 400px;
  bottom: -100px; left: -50px;
  animation: float2 25s ease-in-out infinite;
}
.hero-shape:nth-child(3) {
  width: 200px; height: 200px;
  top: 40%; left: 20%;
  animation: float3 18s ease-in-out infinite;
  border-radius: 30%;
}
.hero-shape:nth-child(4) {
  width: 150px; height: 150px;
  top: 20%; right: 30%;
  animation: float4 22s ease-in-out infinite;
  border-radius: 40%;
  opacity: 0.04;
}
.hero-shape:nth-child(5) {
  width: 300px; height: 300px;
  bottom: 10%; right: 20%;
  animation: float5 28s ease-in-out infinite;
  opacity: 0.03;
}
.hero-shape:nth-child(6) {
  width: 80px; height: 80px;
  top: 60%; left: 60%;
  animation: float6 15s ease-in-out infinite;
  border-radius: 20%;
  opacity: 0.08;
}

@keyframes float1 { 0%,100% { transform: translate(0,0) rotate(0deg); } 50% { transform: translate(-40px,30px) rotate(10deg); } }
@keyframes float2 { 0%,100% { transform: translate(0,0) rotate(0deg); } 50% { transform: translate(30px,-40px) rotate(-15deg); } }
@keyframes float3 { 0%,100% { transform: translate(0,0) rotate(0deg); } 50% { transform: translate(20px,25px) rotate(20deg); } }
@keyframes float4 { 0%,100% { transform: translate(0,0) rotate(0deg); } 50% { transform: translate(-30px,-20px) rotate(-10deg); } }
@keyframes float5 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(20px,-15px) scale(1.05); } }
@keyframes float6 { 0%,100% { transform: translate(0,0) rotate(0deg); } 50% { transform: translate(-15px,20px) rotate(45deg); } }

/* Grid pattern overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
  color: var(--white);
  padding: 0 24px;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 30px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 32px;
  opacity: 0.7;
}

.hero-title {
  font-family: 'RageItalic', 'Playfair Display', serif;
  font-size: clamp(56px, 10vw, 120px);
  font-weight: normal;
  font-style: italic;
  letter-spacing: 4px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #a8c8e8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: 'Inter', sans-serif;
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 300;
  letter-spacing: 4px;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 48px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 40px;
  background: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(74,144,217,0.3);
}

.hero-cta:hover {
  background: #3a7fc9;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(74,144,217,0.4);
}

.hero-cta svg {
  width: 18px; height: 18px;
  transition: transform var(--transition);
}
.hero-cta:hover svg {
  transform: translateX(4px);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.4);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: bounce 2s ease-in-out infinite;
}

.hero-scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════════════════════════════════════ */
.section {
  padding: 100px 0;
}

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

.section-accent {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  margin-bottom: 16px;
  color: var(--primary);
}

.section-dark .section-title,
.section-accent .section-title {
  color: var(--white);
}

.section-lead {
  font-size: 18px;
  color: var(--text-light);
  max-width: 600px;
  margin-bottom: 60px;
  line-height: 1.7;
}

.section-dark .section-lead {
  color: rgba(255,255,255,0.7);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .section-lead {
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   GLASS CARDS
   ═══════════════════════════════════════════════════════════════════════════ */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.glass-card-icon {
  width: 60px; height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  border-radius: 16px;
  font-size: 28px;
  margin-bottom: 24px;
}

.glass-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--primary);
}

.glass-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CHI SIAMO PREVIEW
   ═══════════════════════════════════════════════════════════════════════════ */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-preview-text h2 {
  font-size: clamp(32px, 4vw, 44px);
  color: var(--primary);
  margin-bottom: 24px;
}

.about-preview-text p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-preview-visual {
  position: relative;
  height: 400px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.about-preview-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

.about-preview-visual-text {
  position: relative;
  color: white;
  text-align: center;
  padding: 40px;
}

.about-preview-visual-text .big-number {
  font-family: 'Playfair Display', serif;
  font-size: 72px;
  font-weight: 700;
  display: block;
  margin-bottom: 8px;
}

.about-preview-visual-text span {
  font-size: 16px;
  opacity: 0.8;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  color: var(--accent);
  margin-top: 16px;
  transition: gap var(--transition);
}
.link-arrow:hover { gap: 14px; color: var(--primary); }

@media (max-width: 768px) {
  .about-preview {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-preview-visual { height: 280px; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   STATS BAR
   ═══════════════════════════════════════════════════════════════════════════ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  padding: 60px 0;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-family: 'Playfair Display', serif;
  font-size: 40px;
  font-weight: 700;
  color: var(--white);
  display: block;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.7;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CTA SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
.cta-section {
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 20px;
}

.cta-section p {
  font-size: 17px;
  opacity: 0.8;
  margin-bottom: 36px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  border-radius: 50px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(74,144,217,0.3);
}
.btn-primary:hover {
  background: #3a7fc9;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(74,144,217,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}

.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline-dark:hover {
  background: var(--primary);
  color: var(--white);
}

/* ═══════════════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════════════ */
.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .nav-logo-text {
  font-size: 28px;
  margin-bottom: 16px;
  display: block;
  color: var(--white);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 300px;
}

.footer-col h4 {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 20px;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-certs {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 12px;
  opacity: 0.6;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   PAGE HEADER (for internal pages)
   ═══════════════════════════════════════════════════════════════════════════ */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 140px 0 80px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.page-header h1 {
  font-size: clamp(36px, 5vw, 56px);
  position: relative;
  margin-bottom: 16px;
}

.page-header p {
  font-size: 18px;
  opacity: 0.7;
  position: relative;
  max-width: 600px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CORSI PAGE — Course Catalog
   ═══════════════════════════════════════════════════════════════════════════ */

/* Regulation info cards */
/* Accordion regolamento */
.accordion-group {
  max-width: 1200px;
  margin: 0 auto 60px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.accordion-item {
  flex: 1;
}

@media (max-width: 768px) {
  .accordion-group {
    flex-direction: column;
  }
}

.accordion-item {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border-left: 4px solid var(--accent);
  transition: box-shadow var(--transition);
}

.accordion-item[open] {
  box-shadow: var(--shadow-md);
}

.accordion-header {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition);
}

.accordion-header:hover {
  background: var(--accent-light);
}

.accordion-header::-webkit-details-marker {
  display: none;
}

.accordion-header::after {
  content: '+';
  font-size: 22px;
  font-weight: 300;
  color: var(--accent);
  transition: transform var(--transition);
}

.accordion-item[open] .accordion-header::after {
  content: '-';
}

.accordion-body {
  padding: 0 18px 16px;
}

.accordion-body ul {
  list-style: none;
  padding: 0;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

.accordion-body li {
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}

.accordion-body li::before {
  content: '';
  position: absolute;
  left: 0; top: 12px;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* Course catalog embed styles */
.corso-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 16px;
}

.corso-spinner {
  width: 48px; height: 48px;
  border: 5px solid #dde3ec;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.corso-loading-text {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* Filters */
#corso-filters {
  display: none;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.corso-filter-btn {
  padding: 8px 22px;
  border-radius: 24px;
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--primary);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-family: 'Inter', sans-serif;
}

.corso-filter-btn.active,
.corso-filter-btn:hover {
  background: var(--primary);
  color: var(--white);
}

/* Grid */
#corso-grid {
  display: none;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 24px;
}

/* Cards */
.corso-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

.corso-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.corso-card-img {
  width: 100%; height: 170px;
  object-fit: cover;
  display: block;
  background: var(--accent-light);
}

.corso-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.corso-card-area {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.corso-card-title {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}

.corso-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 14px;
  font-size: 12.5px;
  color: var(--text-light);
  margin-top: 4px;
}

.corso-card-date { font-weight: 700; font-size: 14px; }
.corso-ecm { font-weight: 700; color: #b05000; }
.corso-ecm.none { color: var(--text-muted); font-weight: 400; }

.corso-card-actions {
  display: flex;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
}

.corso-btn-iscriviti {
  flex: 1;
  padding: 10px 12px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  font-family: 'Inter', sans-serif;
  transition: background var(--transition);
}
.corso-btn-iscriviti:hover { background: var(--primary-dark); color: var(--white); }
.corso-btn-iscriviti.disabled { opacity: 0.4; pointer-events: none; }

.corso-btn-locandina {
  flex: 1;
  padding: 10px 12px;
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  font-family: 'Inter', sans-serif;
  transition: all var(--transition);
}
.corso-btn-locandina:hover { background: var(--accent-light); }

#corso-error {
  display: none;
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 15px;
}

#corso-stale-banner {
  display: none;
  text-align: center;
  padding: 8px 16px;
  margin-bottom: 16px;
  background: #fff8e1;
  border: 1px solid #ffe082;
  border-radius: 8px;
  font-size: 13px;
  color: #8d6e00;
}

/* Privacy ECM section */
.privacy-ecm {
  margin-top: 60px;
  padding: 40px;
  background: var(--accent-light);
  border-radius: var(--radius);
  text-align: center;
}

.privacy-ecm p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════════════════════════
   ATTESTATI PAGE
   ═══════════════════════════════════════════════════════════════════════════ */
.iframe-container {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin: -40px auto 0;
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.iframe-container iframe {
  width: 100%;
  height: 700px;
  border: none;
  display: block;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CONTENT PAGES (Presentazione, Privacy, Codice Etico)
   ═══════════════════════════════════════════════════════════════════════════ */
.content-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 24px;
}

.content-page h2 {
  font-size: clamp(24px, 3vw, 36px);
  color: var(--primary);
  margin-bottom: 24px;
  margin-top: 48px;
}

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

.content-page h3 {
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 12px;
  margin-top: 32px;
}

.content-page p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-light);
  margin-bottom: 16px;
}

.content-page ul, .content-page ol {
  margin: 16px 0;
  padding-left: 24px;
}

.content-page li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-light);
  margin-bottom: 8px;
}

/* Mission values grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin: 40px 0;
}

.value-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform var(--transition);
}

.value-card:hover { transform: translateY(-3px); }

.value-card-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.value-card h3 {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  margin-top: 0;
  color: var(--primary);
}

.value-card p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 0;
}

/* ═══════════════════════════════════════════════════════════════════════════
   APP PAGE
   ═══════════════════════════════════════════════════════════════════════════ */
.app-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
}

.app-info h2 {
  font-size: clamp(28px, 4vw, 40px);
  color: var(--primary);
  margin-bottom: 20px;
}

.app-info p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.app-steps {
  list-style: none;
  padding: 0;
  margin: 32px 0;
  counter-reset: steps;
}

.app-steps li {
  counter-increment: steps;
  padding: 16px 16px 16px 60px;
  position: relative;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 12px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.app-steps li::before {
  content: counter(steps);
  position: absolute;
  left: 16px; top: 14px;
  width: 32px; height: 32px;
  background: var(--accent);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.app-qr {
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-qr-placeholder {
  width: 280px;
  height: 280px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 14px;
}

.app-qr-placeholder svg {
  width: 120px;
  height: 120px;
  opacity: 0.3;
}

@media (max-width: 768px) {
  .app-showcase {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .glass-card { padding: 28px; }
  .cards-grid { gap: 20px; }
  .hero-cta { padding: 14px 32px; font-size: 14px; }
  .stats-bar { gap: 24px; }
  .stat-value { font-size: 32px; }
  .page-header { padding: 120px 0 60px; }
}