:root {
  --color-bg: #07111f;
  --color-bg-top: #0f1b2d;
  --color-surface: rgba(12, 23, 38, 0.9);
  --color-surface-strong: #102238;
  --color-border: rgba(157, 181, 209, 0.18);
  --color-border-strong: rgba(201, 166, 82, 0.35);
  --color-primary: #d0aa52;
  --color-primary-strong: #f1c96a;
  --color-highlight: #59c3c3;
  --color-text: #edf2f7;
  --color-text-muted: #a4b4c8;
  --color-text-soft: #7f93ab;
  --color-error: #f07178;
  --font-sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --font-size-base: 1rem;
  --line-height: 1.7;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --max-width: 1120px;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.28);
  --shadow-strong: 0 28px 60px rgba(0, 0, 0, 0.42);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at top left, rgba(89, 195, 195, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(208, 170, 82, 0.12), transparent 24%),
    linear-gradient(180deg, var(--color-bg-top) 0%, var(--color-bg) 46%, #050b14 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 85%);
}

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

a:hover,
a:focus-visible {
  color: #fff7df;
}

img,
audio {
  max-width: 100%;
}

.site-header {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-strong);
  background: linear-gradient(180deg, rgba(5, 13, 24, 0.94), rgba(10, 23, 39, 0.9));
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 4px;
  background: linear-gradient(90deg, transparent 0%, var(--color-primary) 18%, var(--color-highlight) 50%, var(--color-primary) 82%, transparent 100%);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.35rem var(--space-md) 1.55rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-shrink: 0;
}

.header-logo-image {
  width: 68px;
  height: 68px;
  object-fit: contain;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.35));
}

.logo-sigla {
  font-size: 2.15rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
}

.header-title {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-title {
  font-size: clamp(1.1rem, 1.7vw, 1.5rem);
  font-weight: 700;
  line-height: 1.25;
}

.site-title a {
  color: #f6f8fb;
}

.site-subtitle {
  color: var(--color-text-muted);
  font-size: 0.96rem;
  letter-spacing: 0.02em;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(8, 18, 31, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-nav ul {
  max-width: var(--max-width);
  margin: 0 auto;
  list-style: none;
  display: flex;
  gap: 0.8rem;
  padding: 0 var(--space-md);
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 3.4rem;
  padding: 0 var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.94rem;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #ffffff;
  border-bottom-color: var(--color-primary);
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.2rem var(--space-md) 4rem;
}

.page-section {
  position: relative;
}

.section-header {
  position: relative;
  margin-bottom: 2rem;
  padding: 1.75rem 1.8rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(12, 23, 38, 0.94), rgba(16, 34, 56, 0.86));
  box-shadow: var(--shadow-soft);
}

.section-header::before {
  content: "";
  position: absolute;
  inset: 1rem auto 1rem 0;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-highlight));
}

.section-kicker {
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  color: var(--color-primary-strong);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-header h2 {
  padding-left: 1rem;
  font-size: clamp(1.9rem, 3.8vw, 2.8rem);
  line-height: 1.1;
  color: #f5f7fa;
}

.section-intro,
.section-summary {
  max-width: 62ch;
  padding-left: 1rem;
}

.section-intro {
  margin-top: 0.85rem;
  color: var(--color-text-muted);
  font-size: 1.02rem;
}

.section-summary {
  margin-top: 0.8rem;
  color: var(--color-highlight);
  font-size: 0.92rem;
  font-weight: 600;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.35rem;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(14, 26, 43, 0.96), rgba(9, 18, 30, 0.94));
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(208, 170, 82, 0.08), transparent 35%, rgba(89, 195, 195, 0.08));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-strong);
}

.card:hover::before {
  opacity: 1;
}

.card-body,
.card-footer {
  position: relative;
  z-index: 1;
}

.card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.8rem;
  padding: 1.55rem;
}

.card-eyebrow {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.3rem 0.7rem;
  border: 1px solid rgba(89, 195, 195, 0.2);
  border-radius: 999px;
  background: rgba(89, 195, 195, 0.08);
  color: var(--color-highlight);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-title {
  font-size: 1.18rem;
  line-height: 1.4;
  color: #f5f7fb;
}

.card-title a {
  color: inherit;
}

.card-title a:hover,
.card-title a:focus-visible {
  color: var(--color-primary-strong);
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.card-footer {
  padding: 0 1.55rem 1.55rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.9rem;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-strong) 100%);
  color: #0e1826;
  box-shadow: 0 10px 22px rgba(208, 170, 82, 0.24);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: #09111b;
}

.btn-secondary {
  border-color: rgba(208, 170, 82, 0.35);
  background: rgba(208, 170, 82, 0.08);
  color: var(--color-primary-strong);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: rgba(208, 170, 82, 0.55);
  background: rgba(208, 170, 82, 0.14);
  color: #fff3cf;
}

.lettera-shell {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.lettera-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.8fr);
  gap: 1.5rem;
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, rgba(89, 195, 195, 0.12), transparent 26%),
    linear-gradient(135deg, rgba(16, 34, 56, 0.97), rgba(7, 17, 31, 0.96));
  box-shadow: var(--shadow-strong);
}

.lettera-hero-copy {
  min-width: 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  margin-bottom: 1.15rem;
  font-size: 0.84rem;
  color: var(--color-text-soft);
}

.breadcrumb ol li + li::before {
  content: ">";
  margin-right: 0.35rem;
  color: rgba(255, 255, 255, 0.28);
}

.breadcrumb a {
  color: var(--color-highlight);
}

.lettera-kicker {
  margin-bottom: 0.7rem;
  color: var(--color-primary-strong);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lettera-titolo {
  max-width: 16ch;
  font-size: clamp(2.1rem, 4.4vw, 3.6rem);
  line-height: 1.08;
  color: #f7f9fc;
}

.lettera-intro {
  max-width: 58ch;
  margin-top: 1rem;
  color: var(--color-text-muted);
  font-size: 1.03rem;
}

.lettera-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.95rem;
  margin-top: 1.5rem;
}

.lettera-meta-card {
  padding: 1rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
}

.lettera-meta-label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--color-text-soft);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lettera-meta-value {
  color: #f4f7fb;
  font-size: 1rem;
  font-weight: 600;
}

.lettera-audio-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.85rem;
  padding: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(16px);
}

.lettera-audio-kicker {
  color: var(--color-highlight);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.podcast-title {
  font-size: 1.35rem;
  line-height: 1.2;
  color: #f4f7fb;
}

.lettera-audio-copy {
  color: var(--color-text-muted);
  font-size: 0.96rem;
}

.audio-player {
  width: 100%;
  accent-color: var(--color-primary);
}

.lettera-main {
  width: min(100%, 900px);
  margin: 0 auto;
}

.lettera-prose {
  padding: clamp(1.35rem, 2.4vw, 2.4rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(12, 23, 38, 0.98), rgba(8, 17, 29, 0.98));
  box-shadow: var(--shadow-soft);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.85;
  color: #e7edf5;
}

.lettera-prose > * + * {
  margin-top: 1.35rem;
}

.lettera-lead {
  padding: 1rem 1.15rem;
  border-left: 4px solid var(--color-highlight);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(89, 195, 195, 0.08);
  color: #dff6f6;
  font-family: var(--font-sans);
  font-size: 1rem;
}

.lettera-doc-number {
  margin-top: 0.85rem;
  color: var(--color-primary-strong);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.lettera-index {
  margin: 0 0 2rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.025));
  font-family: var(--font-sans);
}

.lettera-index h2 {
  margin: 0 0 0.55rem;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 0;
  padding-bottom: 0;
}

.lettera-index ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.lettera-index li + li {
  margin-top: 0.45rem;
}

.lettera-index li.is-sub {
  padding-left: 1rem;
}

.lettera-index a {
  color: #e9f6f6;
  text-decoration: none;
}

.lettera-index a:hover,
.lettera-index a:focus-visible {
  color: var(--color-highlight);
  text-decoration: underline;
}

.lettera-prose article,
.lettera-prose section {
  margin-bottom: var(--space-xl);
}

.lettera-prose h1,
.lettera-prose h2,
.lettera-prose h3,
.lettera-prose h4 {
  font-family: var(--font-sans);
  line-height: 1.2;
}

.lettera-prose h1,
.lettera-prose h2 {
  margin-top: 2.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  color: #f5f7fb;
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

.lettera-prose h3 {
  margin-top: 1.7rem;
  color: var(--color-primary-strong);
  font-size: 1.2rem;
}

.lettera-prose p {
  color: #dbe4ee;
}

.lettera-prose ul,
.lettera-prose ol {
  padding-left: 1.4rem;
  color: #dbe4ee;
}

.lettera-prose li + li {
  margin-top: 0.45rem;
}

.lettera-prose nav {
  margin: 0 0 2rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.025));
  font-family: var(--font-sans);
}

.lettera-prose nav h2,
.lettera-prose nav h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 0;
  padding-bottom: 0;
}

.lettera-prose nav ol,
.lettera-prose nav ul {
  padding-left: 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

.lettera-prose hr {
  border: 0;
  height: 1px;
  margin: 2rem 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0));
}

.lettera-prose a {
  color: var(--color-highlight);
  text-decoration: underline;
  text-decoration-color: rgba(89, 195, 195, 0.4);
  text-underline-offset: 0.18em;
}

.lettera-prose strong {
  color: #ffffff;
}

.lettera-prose blockquote {
  margin: var(--space-lg) 0;
  padding: 1.15rem 1.25rem;
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(208, 170, 82, 0.08);
  color: #f3e3ba;
  font-style: italic;
}

.lettera-prose table {
  width: 100%;
  margin: var(--space-lg) 0;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.lettera-prose th,
.lettera-prose td {
  padding: 0.8rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.09);
  text-align: left;
}

.lettera-prose th {
  background: rgba(208, 170, 82, 0.18);
  color: #fff6db;
}

.lettera-prose tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.03);
}

.lettera-prose figure {
  margin: 1.8rem 0;
}

.lettera-prose img {
  display: block;
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* === Allineamento immagini (QuillResize) ===
   Le classi ql-resize-style-* vengono applicate dal WYSIWYG */
.lettera-prose .ql-resize-style-left {
  float: left;
  margin: 0 1.25rem 1rem 0;
  display: block;
}
.lettera-prose .ql-resize-style-right {
  float: right;
  margin: 0 0 1rem 1.25rem;
  display: block;
}
.lettera-prose .ql-resize-style-center {
  display: block;
  margin: 1rem auto;
  float: none;
  text-align: center;
}
.lettera-prose .ql-resize-style-full {
  display: block;
  margin: 1rem 0;
  float: none;
}
.lettera-prose .ql-resize-style-full img {
  width: 100% !important;
}

.lettera-prose figcaption {
  margin-top: 0.65rem;
  color: var(--color-text-soft);
  font-family: var(--font-sans);
  font-size: 0.88rem;
}

.lettera-prose > :first-child {
  margin-top: 0;
}

.lettera-prose > :last-child {
  margin-bottom: 0;
}

.lettera-footer {
  width: min(100%, 900px);
  margin: 0 auto;
  display: flex;
  justify-content: flex-start;
}

.error-page {
  padding: var(--space-2xl) var(--space-md);
  text-align: center;
}

.error-page h2 {
  margin-bottom: var(--space-md);
  color: #f6f8fb;
  font-size: 2rem;
}

.error-page p {
  margin-bottom: var(--space-lg);
  color: var(--color-text-muted);
}

.flash-messages {
  margin-bottom: var(--space-lg);
}

.flash {
  margin-bottom: 0.75rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.94rem;
}

.flash-info {
  background: rgba(89, 195, 195, 0.12);
  color: #aef4f4;
}

.flash-success {
  background: rgba(56, 178, 124, 0.14);
  color: #b8f1d4;
}

.flash-error {
  background: rgba(240, 113, 120, 0.14);
  color: #ffc1c6;
}

.empty-state {
  padding: 3rem 1.5rem;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.04rem;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(4, 10, 18, 0.92);
  color: var(--color-text-soft);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.4rem var(--space-md) 1.8rem;
  text-align: center;
  font-size: 0.85rem;
}

.footer-note {
  margin-top: 0.3rem;
}

.site-footer a {
  color: var(--color-primary-strong);
}

@media (max-width: 720px) {
  .header-inner {
    align-items: flex-start;
  }

  .header-logo-image {
    width: 58px;
    height: 58px;
  }

  .logo-sigla {
    font-size: 1.7rem;
  }

  .section-header,
  .lettera-hero,
  .lettera-prose {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .lettera-hero {
    grid-template-columns: 1fr;
  }

  .lettera-meta-grid {
    grid-template-columns: 1fr;
  }

  .section-header::before {
    inset: 1rem auto 1rem 0.75rem;
  }
}

@media (max-width: 560px) {
  .header-inner {
    flex-direction: column;
    text-align: left;
  }

  .header-logo {
    gap: 0.7rem;
  }

  .site-nav ul {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .site-main {
    padding-top: 2rem;
  }

  .section-header {
    padding: 1.35rem 1.1rem 1.35rem 1.2rem;
  }

  .section-header::before {
    inset: 0.85rem auto 0.85rem 0.35rem;
  }

  .section-kicker,
  .section-header h2,
  .section-intro,
  .section-summary {
    padding-left: 0.65rem;
  }

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

  .card-body,
  .card-footer {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
  }

  .lettera-titolo {
    font-size: 1.9rem;
  }

  .lettera-prose {
    font-size: 1rem;
    line-height: 1.75;
  }
}