/* ==========================================================================
   RESET & VARIABILI
   ========================================================================== */
:root {
  --bg-dark: #0A0D14;
  --bg-card: #0D111A;
  --bg-card-hover: #121724;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(59, 130, 246, 0.4);
  
  --text-main: #E2E8F0;
  --text-muted: #94A3B8;
  --text-white: #FFFFFF;
  
  --accent-blue: #3B82F6;
  --accent-blue-hover: #2563EB;
  --accent-blue-glow: rgba(59, 130, 246, 0.2);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --nav-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.dot {
  color: var(--accent-blue);
}

.accent-text {
  color: var(--accent-blue);
}

/* ==========================================================================
   PULSANTI E ELEMENTI UI
   ========================================================================== */
.btn {
  display: inline-flex;
  items-center: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: var(--text-white);
  border: 1px solid var(--accent-blue);
  box-shadow: 0 4px 20px var(--accent-blue-glow);
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
  border-color: var(--accent-blue-hover);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.03);
  border-color: var(--text-muted);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-blue);
  padding: 0;
  margin-top: 16px;
  transition: color 0.2s ease;
}

.btn-link:hover {
  color: var(--text-white);
}

/* ==========================================================================
   NAVBAR
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 100;
  transition: background-color 0.3s ease, border-bottom 0.3s ease, height 0.3s ease;
}

.navbar.scrolled {
  background-color: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: 70px;
}

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

.nav-logo {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: var(--text-white);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-blue);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-blue);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  transition: all 0.3s ease;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.3;
  pointer-events: none;
}

.hero-container {
  text-align: center;
  z-index: 2;
}

.badge-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  font-weight: 300;
  max-width: 750px;
  margin: 0 auto 40px auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  opacity: 0.7;
  transition: opacity 0.3s ease;
  animation: bounce 2s infinite;
}

.scroll-indicator:hover {
  opacity: 1;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
  40% { transform: translate(-50%, -8px); }
  60% { transform: translate(-50%, -4px); }
}

/* ==========================================================================
   SEZIONI GENERICHE
   ========================================================================== */
.section {
  padding: 120px 0;
  border-top: 1px solid var(--border-color);
}

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

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.01em;
}

.section-title.center {
  text-align: center;
}

.section-line {
  width: 48px;
  height: 2px;
  background-color: var(--accent-blue);
  margin-top: 12px;
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 60px;
  align-items: center;
}

.about-content {
  color: var(--text-muted);
  font-size: 1rem;
}

.about-content p {
  margin-bottom: 20px;
}

.lead-text {
  color: var(--text-main);
  font-size: 1.15rem;
  font-weight: 400;
}

.about-badges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.about-badge-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-main);
}

.icon-accent {
  color: var(--accent-blue);
  flex-shrink: 0;
}

.about-photo-wrapper {
  display: flex;
  justify-content: center;
}

.photo-frame {
  width: 100%;
  max-width: 360px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 16px;
}

.photo-container {
  width: 100%;
  aspect-ratio: 4/5;
  background-color: rgba(255, 255, 255, 0.02);
  position: relative;
  overflow: hidden;
}

.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(110%);
  transition: filter 0.5s ease;
}

.profile-photo:hover {
  filter: grayscale(0%);
}

.photo-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  border: 1px stroke var(--border-color);
}

.ph-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.ph-path {
  font-size: 0.85rem;
  color: var(--accent-blue);
}

.photo-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

/* ==========================================================================
   WORKS / PROGETTI
   ========================================================================== */
.works-list {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.work-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.work-card.reverse {
  grid-template-columns: 1fr 1.2fr;
}

.work-card.reverse .work-image-col {
  order: 2;
}

.work-image-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  overflow: hidden;
  cursor: pointer;
}

.work-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.work-image-box:hover img {
  transform: scale(1.04);
}

.work-num-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: rgba(10, 13, 20, 0.85);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.work-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 13, 20, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.work-image-box:hover .work-overlay {
  opacity: 1;
}

.btn-overlay {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-white);
  background-color: var(--accent-blue);
  padding: 8px 16px;
  text-transform: uppercase;
}

.work-category {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.work-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-white);
  margin: 8px 0 16px 0;
  cursor: pointer;
  transition: color 0.2s ease;
}

.work-title:hover {
  color: var(--accent-blue);
}

.work-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-main);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
}

/* ==========================================================================
   SKILLS & CERTIFICAZIONI
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 80px;
}

.skill-group-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 24px;
}

.skill-group-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-chip {
  font-size: 0.8rem;
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
}

.sub-section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 32px;
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.cert-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.3s ease;
}

.cert-card:hover {
  border-color: var(--border-focus);
}

.cert-issuer {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 2px;
}

.cert-issuer.cisco {
  background-color: rgba(59, 130, 246, 0.15);
  color: #60A5FA;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.cert-issuer.aica {
  background-color: rgba(148, 163, 184, 0.15);
  color: #CBD5E1;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.cert-issuer.cambridge {
  background-color: rgba(99, 102, 241, 0.15);
  color: #A5B4FC;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.cert-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-container {
  text-align: center;
  max-width: 650px;
}

.contact-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 20px 0 40px 0;
}

.contact-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
  background-color: #07090E;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   MODALE PROGETTO
   ========================================================================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(10, 13, 20, 0.9);
  backdrop-filter: blur(8px);
}

.modal-window {
  position: relative;
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  overflow-y: auto;
  z-index: 2;
  padding: 40px;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 2rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.modal-close:hover {
  color: var(--text-white);
}

/* Stili interni per il contenuto dinamico del progetto */
.modal-header-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.modal-project-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 24px;
}

.modal-hero-img {
  width: 100%;
  aspect-ratio: 16/9;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  object-fit: cover;
  margin-bottom: 32px;
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
}

.modal-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

.modal-body-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.modal-list {
  list-style: none;
  margin-bottom: 24px;
}

.modal-list li {
  position: relative;
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.modal-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent-blue);
}

.modal-sidebar {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 24px;
  height: fit-content;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE & TABLET)
   ========================================================================== */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

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

  .work-card.reverse .work-image-col {
    order: 0;
  }

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    transform: translateY(-150%);
    transition: transform 0.3s ease;
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .hamburger {
    display: flex;
  }

  .about-badges {
    grid-template-columns: 1fr;
  }

  .modal-window {
    padding: 24px;
  }
}