:root {
  --color-primary: #16213e;
  --color-primary-dark: #0d1526;
  --color-accent: #7b8cae;
  --color-accent-light: #c9a15a;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6fa;
  --color-text: #1c1c1c;
  --color-text-muted: #5a6472;
  --color-border: #e2e5ec;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1100px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

h1, h2, h3 {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

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

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

/* NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.navbar-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.navbar-links a:hover {
  color: var(--color-primary);
}

.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
}

.nav-cta:hover {
  background: var(--color-primary-dark);
}

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

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}

/* HERO */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-bg-lines path {
  opacity: 0.22;
}

.hero-bg-nodes circle {
  opacity: 0.35;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
}

.hero-logo-img {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 0 auto 2rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent-light);
  margin: 0 0 1rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0 0 0.75rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin: 0 0 1.25rem;
  font-weight: 500;
}

.hero-date {
  display: inline-block;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  margin: 0 0 2.5rem;
}

.btn {
  display: inline-block;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 2rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

/* ABOUT */
.about, .registration {
  text-align: center;
}

.about h2, .registration h2 {
  font-size: 2rem;
  margin: 0 0 1.5rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

.about p {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* REGISTRATION FORM */
.reg-form {
  max-width: 640px;
  margin: 2.5rem auto 0;
  text-align: left;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2.5rem;
}

.reg-form fieldset {
  border: none;
  padding: 0;
  margin: 0 0 2rem;
  min-width: 0;
}

.reg-form fieldset:last-of-type {
  margin-bottom: 1.25rem;
}

.reg-form legend {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  padding: 0 0 0.6rem;
  margin: 0 0 1.25rem;
  border-bottom: 2px solid var(--color-border);
  width: 100%;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--color-primary);
}

.form-group label .opt {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
  width: 100%;
  min-width: 0;
  font-family: var(--font-main);
  font-size: 0.95rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
  color: var(--color-text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

#codice_fiscale {
  text-transform: uppercase;
}

.event-info {
  display: none;
  margin-top: 0.75rem;
  padding: 0.75rem 0.9rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.87rem;
  color: var(--color-text-muted);
}

.event-info.visible { display: block; }
.event-info strong { color: var(--color-text); }

.ecm-question {
  display: none;
  margin-bottom: 1.25rem;
}

.ecm-question.visible { display: block; }

.ecm-question > label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--color-primary);
}

.ecm-reserved-note {
  display: none;
  margin-top: 0.5rem;
  padding: 0.6rem 0.75rem;
  background: #fdf3e2;
  border: 1px solid #eeddb1;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #8a6a1f;
}

.ecm-reserved-note.visible { display: block; }

.ecm-unavailable-note {
  display: none;
  margin-top: 0.75rem;
  padding: 0.6rem 0.75rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.ecm-unavailable-note.visible { display: block; }

.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 0.4rem;
}

.radio-row label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-text);
  margin: 0;
}

.radio-row input[type="radio"] {
  width: auto;
  margin: 0;
}

.ecm-professione-wrap {
  display: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--color-border);
}

.ecm-professione-wrap.visible { display: block; }

.ecm-denied-note {
  display: none;
  margin-top: 0.75rem;
  padding: 0.6rem 0.75rem;
  background: #fdecea;
  border: 1px solid #f0b8b4;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #b3261e;
}

.ecm-denied-note.visible { display: block; }

.ecm-extra {
  display: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--color-border);
}

.ecm-extra.visible { display: block; }

.bank-box {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  background: #eef6ef;
  border: 1px solid #bfe0c4;
  border-radius: 8px;
  font-size: 0.88rem;
}

.bank-box h4 {
  margin: 0 0 0.5rem;
  color: #1e5a2b;
  font-size: 0.95rem;
}

.bank-box p { margin: 0.25rem 0; }

.btn-submit {
  width: 100%;
  margin-top: 0.5rem;
}

.form-status {
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  min-height: 1.2em;
}

.form-status.success { color: #1e7d32; }
.form-status.error { color: #b3261e; }

/* FOOTER */
.footer {
  background: var(--color-primary);
  color: #fff;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-align: center;
  padding-bottom: 1.5rem;
}

.footer-logo-img {
  height: 64px;
  width: auto;
  flex-shrink: 0;
  border-radius: 10px;
}

.footer-info p {
  margin: 0.2rem 0;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
}

.footer-info a {
  color: #fff;
  text-decoration: underline;
}

.footer-copy {
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin: 0;
  padding-bottom: 1.5rem;
}

/* RESPONSIVE */
@media (max-width: 720px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .navbar-title {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .navbar-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    display: none;
  }

  .navbar-links.open {
    display: flex;
  }

  .navbar-links a {
    width: 100%;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-cta {
    border-radius: 0;
    text-align: center;
  }

  .reg-form {
    padding: 1.5rem;
  }
}