/*
 * Generated on 2026-06-06.
 * Sources: README.md, https://fb-labs.blogspot.com/p/informatica.html, https://fb-labs.blogspot.com/p/tpsit.html,
 * https://fb-labs.blogspot.com/p/sistemi-e-reti_24.html, https://fb-labs.blogspot.com/p/menu.html,
 * https://fb-labs.blogspot.com/p/telecomunicazioni.html, https://fb-labs.blogspot.com/p/tpsit_16.html,
 * https://blog.filippobilardo.it/
 */

:root {
  --bg: #07111d;
  --bg-soft: #0d1a29;
  --panel: rgba(10, 24, 40, 0.86);
  --panel-strong: #0b1726;
  --text: #ebf6ff;
  --muted: #98aec6;
  --line: rgba(131, 196, 255, 0.18);
  --blue: #59b7ff;
  --green: #45f0a3;
  --orange: #ffb357;
  --red: #ff6876;
  --violet: #b48cff;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.32);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(89, 183, 255, 0.18), transparent 35%),
    radial-gradient(circle at top right, rgba(69, 240, 163, 0.14), transparent 28%),
    linear-gradient(180deg, #050b14 0%, #08121e 50%, #060d17 100%);
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.skip-link {
  position: absolute;
  top: -50px;
  left: 1rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: #fff;
  color: #111;
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  width: min(100% - 2rem, 1200px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(5, 11, 20, 0.78);
  border-bottom: 1px solid var(--line);
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand strong,
.eyebrow,
.site-nav a,
.button,
.course-label,
.badge,
.footer-title {
  font-family: "Azeret Mono", monospace;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.85rem;
  color: var(--green);
  background: rgba(69, 240, 163, 0.1);
  border: 1px solid rgba(69, 240, 163, 0.24);
}

.menu-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 0.75rem 1rem;
}

.site-nav {
  display: none;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0 0 1rem;
}

.site-nav.is-open {
  display: flex;
}

.site-nav a {
  display: inline-flex;
  width: fit-content;
  color: var(--muted);
  font-size: 0.84rem;
  letter-spacing: 0.02em;
  padding: 0.45rem 0;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active {
  color: var(--text);
}

.section-shell,
.page-hero {
  opacity: 0;
  transform: translateY(18px);
  animation: revealUp 0.8s ease forwards;
}

.section-shell:nth-of-type(2) { animation-delay: 0.08s; }
.section-shell:nth-of-type(3) { animation-delay: 0.16s; }
.section-shell:nth-of-type(4) { animation-delay: 0.24s; }
.section-shell:nth-of-type(5) { animation-delay: 0.32s; }

.hero,
.page-hero,
.section-shell {
  padding: 4rem 0 1.5rem;
}

.hero-grid,
.two-column-layout,
.about-preview,
.footer-grid {
  display: grid;
  gap: 1.5rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--green);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1,
h2,
h3 {
  line-height: 1.1;
  margin: 0 0 1rem;
}

h1 {font-size: clamp(2.5rem, 7vw, 5.2rem);}
h2 {font-size: clamp(1.8rem, 4vw, 3rem);}
h3 {font-size: 1.2rem;}
/*
h1 {  font-size: clamp(2.0rem, 7vw, 4.2rem);}
h2 {  font-size: clamp(1.5rem, 4vw, 2rem);}
h3 {font-size: 1.2rem;}
*/

h4 {
  margin: 0 0 0.8rem;
  font-size: 1rem;
  color: var(--text);
}

p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.hero-tagline {
  color: var(--text);
  font-size: clamp(1.1rem, 2.7vw, 1.45rem);
}

.hero-text {
  max-width: 62ch;
}

.stats,
.skill-list,
.module-list,
.link-list,
.resource-list,
.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.stats li,
.detail-panel,
.about-panel,
.course-card,
.project-card,
.code-window {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.stats li {
  border-radius: 1.1rem;
  padding: 1rem;
}

.stats strong {
  display: block;
  font-size: 1.5rem;
  color: var(--text);
}

.stats span {
  color: var(--muted);
  font-size: 0.88rem;
}

.cta-row,
.card-actions,
.section-actions,
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: #04101a;
  background: linear-gradient(135deg, var(--green), #8cf7c6);
}

.button-secondary {
  color: #07111d;
  background: linear-gradient(135deg, var(--blue), #95e5ff);
}

.button-ghost {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

.skill-list li,
.badge {
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  font-size: 0.78rem;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.badge-muted {
  color: #ffd9a8;
  border-color: rgba(255, 179, 87, 0.35);
}

.hero-art {
  display: grid;
  gap: 1rem;
}

.avatar {
  width: min(100%, 260px);
}

.code-window {
  position: relative;
  overflow: hidden;
  padding: 1.2rem;
  border-radius: var(--radius);
  transform-style: preserve-3d;
  transition: transform 260ms ease, border-color 260ms ease;
}

.code-window:hover {
  transform: perspective(1200px) rotateX(4deg) rotateY(-5deg) translateY(-4px);
  border-color: rgba(89, 183, 255, 0.45);
}

.window-bar {
  display: inline-flex;
  width: 100%;
  height: 0.7rem;
  margin-bottom: 1rem;
  background:
    radial-gradient(circle, #ff6876 0 28%, transparent 30%) left center / 2rem 0.7rem no-repeat,
    radial-gradient(circle, #ffb357 0 28%, transparent 30%) center left 2rem / 2rem 0.7rem no-repeat,
    radial-gradient(circle, #45f0a3 0 28%, transparent 30%) center left 4rem / 2rem 0.7rem no-repeat;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  color: #bff6dd;
  font-family: "Azeret Mono", monospace;
  font-size: 0.82rem;
}

.section-heading {
  max-width: 72ch;
  margin-bottom: 1.5rem;
}

.course-grid,
.project-grid,
.blog-grid {
  display: grid;
  gap: 1rem;
}

.stagger-grid > * {
  opacity: 0;
  transform: translateY(14px);
  animation: revealUp 0.6s ease forwards;
}

.stagger-grid > *:nth-child(1) { animation-delay: 0.04s; }
.stagger-grid > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-grid > *:nth-child(3) { animation-delay: 0.16s; }
.stagger-grid > *:nth-child(4) { animation-delay: 0.22s; }
.stagger-grid > *:nth-child(5) { animation-delay: 0.28s; }
.stagger-grid > *:nth-child(6) { animation-delay: 0.34s; }
.stagger-grid > *:nth-child(7) { animation-delay: 0.4s; }
.stagger-grid > *:nth-child(8) { animation-delay: 0.46s; }

.course-card,
.detail-panel,
.about-panel,
.project-card {
  border-radius: var(--radius);
  padding: 1.25rem;
}

.course-card {
  position: relative;
}

.course-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  border-radius: 999px;
  background: var(--blue);
}

.course-card--green::before { background: var(--green); }
.course-card--orange::before { background: var(--orange); }
.course-card--red::before { background: var(--red); }
.course-card--violet::before { background: var(--violet); }

.card-topline {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.course-icon {
  font-size: 1.2rem;
}

.course-label {
  color: var(--muted);
  font-size: 0.8rem;
}

.module-list,
.resource-list,
.link-list {
  display: grid;
  gap: 0.7rem;
}

.module-list li,
.resource-list li,
.link-list li {
  position: relative;
  padding-left: 1rem;
  color: var(--text);
}
/*
.module-list li::before,
.resource-list li::before,
.link-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--green);
}*/
.module-list li::before,
.resource-list li::before,
.link-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
}

.project-card {
  overflow: hidden;
  padding: 0;
  transition: transform 240ms ease, border-color 240ms ease;
}

.project-card:hover,
.project-card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(89, 183, 255, 0.38);
}

.project-card img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: linear-gradient(135deg, rgba(89, 183, 255, 0.24), rgba(180, 140, 255, 0.2));
}

.project-card__body {
  padding: 1.2rem;
}

.blog-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.blog-meta {
  font-family: "Azeret Mono", monospace;
  font-size: 0.78rem;
  color: var(--green);
}

.blog-post {
  padding: 1.5rem;
}

.markdown-content {
  max-width: 75ch;
}

.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
  margin-top: 1.6rem;
}

.markdown-content p,
.markdown-content li {
  color: var(--text);
}

.markdown-content ul,
.markdown-content ol {
  margin: 0 0 1rem 1.2rem;
  padding: 0;
}

.markdown-content li + li {
  margin-top: 0.35rem;
}

.markdown-content a {
  color: #a9deff;
  text-decoration: underline;
  text-underline-offset: 0.18rem;
}

.markdown-content pre {
  overflow-x: auto;
  margin: 1rem 0;
  padding: 1rem;
  border-radius: 1rem;
  border: 1px solid var(--line);
  background: rgba(3, 10, 18, 0.95);
}

.markdown-content code {
  font-family: "Azeret Mono", monospace;
}

.about-panel__title {
  color: var(--text);
  font-family: "Azeret Mono", monospace;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.module-block + .module-block,
.detail-panel h2 + .link-list,
.detail-panel h2 + .compact-list {
  margin-top: 1.2rem;
}

.full-course-section {
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
}

.course-subsection + .course-subsection {
  margin-top: 1.1rem;
}

.detailed-list {
  gap: 0.14rem;
}

.detailed-list li {
  display: grid;
  gap: 0.05rem;
  font-size: 0.95rem;
}

.exercise-item--new { 
  width: fit-content;
  max-width: 100%;
  justify-self: start;
  padding: 0.2rem 0.45rem 0.2rem 0.75rem;
  margin-left: -0.15rem;
  border: 1px solid rgba(69, 240, 163, 0.28);
  border-radius: 0.7rem;
  background: rgba(69, 240, 163, 0.05);
}
.exercise-item--draft { 
  width: fit-content;
  max-width: 100%;
  justify-self: start;
  padding: 0.2rem 0.45rem 0.2rem 0.75rem;
  margin-left: -0.15rem;
  border: 1px solid rgba(240, 69, 77, 0.28);
  border-radius: 0.7rem;
  background:rgba(240, 69, 77, 0.05);
}
.entry-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  line-height: 1.3;
}

.entry-title-link,
.entry-title-text {
  color: var(--text);
  letter-spacing: -0.01em;
}

.entry-title-link {
  font-weight: 500;
  text-decoration: none;
}

.entry-title-text--disabled {
  color: #7f93aa;
  font-weight: 500;
}

.entry-resources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-left: 0.1rem;
}

.entry-resources a {
  font-family: "Azeret Mono", monospace;
  font-size: 0.78rem;
  color: var(--blue);
}

.entry-resources--inline {
  gap: 0.3rem;
  padding-left: 0;
}

.entry-resource-link {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0.16rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(89, 183, 255, 0.35);
  background: rgba(89, 183, 255, 0.12);
  font-family: "Azeret Mono", monospace;
  font-size: 0.76rem;
  color: #a9deff;
}

.entry-resource-link:hover,
.entry-resource-link:focus-visible {
  border-color: rgba(69, 240, 163, 0.45);
  background: rgba(69, 240, 163, 0.12);
  color: #d8ffef;
}

.badge-new {
  color: #08121e;
  background: var(--green);
  border-color: rgba(69, 240, 163, 0.3);
}
.badge-draft {
  color: #08121e;
  background: var(--yellow);
  border-color: rgba(255, 204, 0, 0.3);
}

.empty-note {
  margin: 0;
  font-size: 0.92rem;
}

.compact-list {
  max-height: 32rem;
  overflow: auto;
  padding-right: 0.3rem;
}

.site-footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  margin-top: 2rem;
}

.footer-copy {
  max-width: 38ch;
}

@keyframes revealUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 1.2rem;
    padding: 0 0 1rem;
  }

  .hero-grid,
  .two-column-layout,
  .about-preview,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .hero,
  .page-hero,
  .section-shell {
    padding: 0.1rem 0 0;
  }

  .course-grid,
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .shell {
    width: min(100% - 4rem, 1280px);
  }

  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
  }

  .course-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .project-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}