/* ==========================================================================
   DESIGN SYSTEM & VARIABLES - albertolazzaretti.com
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-darker: #060913;
  --bg-base: #0a0f24;
  --bg-lighter: #111a36;
  
  /* Glassmorphism Surface Tokens */
  --glass-bg: rgba(10, 15, 36, 0.6);
  --glass-bg-hover: rgba(16, 26, 56, 0.75);
  --glass-border: rgba(59, 130, 246, 0.12);
  --glass-border-hover: rgba(96, 165, 250, 0.3);
  
  /* Accent Colors (Electric Blues & Cyans) */
  --accent-blue: #3b82f6;
  --accent-blue-rgb: 59, 130, 246;
  --accent-cyan: #0ea5e9;
  --accent-cyan-rgb: 14, 165, 233;
  --accent-purple: #8b5cf6;
  
  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Fonts */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', Courier, monospace;
  
  /* Shadows & Glows */
  --glow-blue: 0 0 20px rgba(59, 130, 246, 0.15);
  --glow-blue-strong: 0 0 35px rgba(59, 130, 246, 0.35);
  --shadow-lg: 0 10px 30px -10px rgba(2, 4, 12, 0.5);
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100%;
}

body {
  background-color: var(--bg-darker);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  max-width: 100%;
}

/* Background Mesh / Aurora Glows */
body::before, body::after {
  content: '';
  position: absolute;
  width: 40vw;
  height: 40vw;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  filter: blur(120px);
  opacity: 0.15;
  will-change: transform;
}

body::before {
  top: 10%;
  left: -10%;
  background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
  animation: pulseGlow 15s infinite alternate ease-in-out;
}

body::after {
  bottom: 20%;
  right: -10%;
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
  animation: pulseGlow 20s infinite alternate-reverse ease-in-out;
}

@keyframes pulseGlow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.12; }
  50% { transform: scale(1.15) translate(3%, 5%); opacity: 0.18; }
  100% { transform: scale(0.9) translate(-2%, -3%); opacity: 0.12; }
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

li {
  list-style: none;
}

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

/* Selection highlight */
::selection {
  background: rgba(59, 130, 246, 0.3);
  color: var(--text-primary);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 5px;
  border: 2px solid var(--bg-darker);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-blue);
}

/* ==========================================================================
   LAYOUT CONTAINERS & UTILITIES
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 4.5rem 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 3rem 0;
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.blue-glow-text {
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(14, 165, 233, 0.4);
}

/* Scroll Animation classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(6, 9, 19, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-fast);
}

header.scrolled {
  background: rgba(6, 9, 19, 0.85);
  border-bottom-color: rgba(59, 130, 246, 0.2);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4.5rem;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  font-weight: 400;
  opacity: 0.7;
}

.logo i {
  color: var(--accent-cyan);
  font-size: 1.5rem;
  filter: drop-shadow(0 0 5px rgba(14, 165, 233, 0.5));
}

.nav-menu {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 4.5rem;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-darker);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    padding: 2rem;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--transition-normal), visibility var(--transition-normal);
    z-index: 99;
  }
  
  .nav-menu.open {
    transform: translateX(0);
    visibility: visible;
  }
  
  .nav-link {
    font-size: 1.25rem;
  }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding: 7.5rem 0 4.5rem 0;
  position: relative;
  overflow: hidden;
}

/* Diagonal grids for high tech look */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: center top;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, #000 40%, transparent 100%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
  width: 100%;
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--accent-cyan);
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

@media (max-width: 992px) {
  .hero-badge {
    align-self: center;
  }
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -1.5px;
}

.hero-title span {
  display: block;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.75rem;
  }
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  font-weight: 350;
}

@media (max-width: 992px) {
  .hero-subtitle {
    margin: 0 auto;
  }
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

@media (max-width: 992px) {
  .hero-actions {
    justify-content: center;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #1d4ed8 100%);
  color: var(--text-primary);
  border: none;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}

.btn-secondary {
  background: rgba(17, 26, 54, 0.5);
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(22, 38, 77, 0.7);
  border-color: var(--glass-border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* Floating interactive wireframe elements in Hero Right side */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

@media (max-width: 768px) {
  .hero-visual {
    display: none;
  }
}

.visual-canvas {
  width: 320px;
  height: 320px;
  position: relative;
}

.visual-globe {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 2px dashed rgba(59, 130, 246, 0.15);
  border-radius: 50%;
  animation: rotate 24s linear infinite;
}

.visual-globe-inner {
  position: absolute;
  top: 15%;
  left: 15%;
  width: 70%;
  height: 70%;
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 50%;
  animation: rotate 16s linear infinite reverse;
}

.visual-core {
  position: absolute;
  top: 35%;
  left: 35%;
  width: 30%;
  height: 30%;
  background: radial-gradient(circle, var(--accent-cyan) 0%, var(--accent-blue) 100%);
  border-radius: 50%;
  box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
  animation: pulseCore 4s ease-in-out infinite alternate;
}

.visual-ring {
  position: absolute;
  top: -10%;
  left: 35%;
  width: 30%;
  height: 120%;
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 50%;
  transform: rotate(45deg);
  animation: rotateOrbit 12s linear infinite;
}

.visual-ring-2 {
  position: absolute;
  top: -10%;
  left: 35%;
  width: 30%;
  height: 120%;
  border: 1px solid rgba(14, 165, 233, 0.25);
  border-radius: 50%;
  transform: rotate(-45deg);
  animation: rotateOrbit2 15s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rotateOrbit {
  0% { transform: rotate(45deg) rotateY(0deg); }
  100% { transform: rotate(45deg) rotateY(360deg); }
}

@keyframes rotateOrbit2 {
  0% { transform: rotate(-45deg) rotateX(0deg); }
  100% { transform: rotate(-45deg) rotateX(360deg); }
}

@keyframes pulseCore {
  0% { transform: scale(1); filter: brightness(1); box-shadow: 0 0 30px rgba(59, 130, 246, 0.5); }
  100% { transform: scale(1.15); filter: brightness(1.2); box-shadow: 0 0 50px rgba(14, 165, 233, 0.8); }
}

/* ==========================================================================
   PRESENTATION SECTION: INTERACTIVE JSON
   ========================================================================== */

.presentation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (max-width: 992px) {
  .presentation-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.presentation-text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-tag {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 2px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
}

.presentation-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.highlight-box {
  background: rgba(59, 130, 246, 0.05);
  border-left: 4px solid var(--accent-blue);
  padding: 1rem 1.5rem;
  border-radius: 0 8px 8px 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Faux Code Editor/Terminal Window */
.code-window {
  background: #080c18;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.03);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.code-window:hover {
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.08);
}

.code-header {
  background: #04060c;
  padding: 0.75rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--glass-border);
}

.code-dots {
  display: flex;
  gap: 6px;
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-dot.red { background: #ef4444; }
.code-dot.yellow { background: #f59e0b; }
.code-dot.green { background: #10b981; }

.code-title {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.code-action-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.code-action-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.code-body {
  padding: 1.5rem;
  overflow-x: auto;
  max-height: 480px;
}

/* Syntax Highlighting */
.json-container {
  color: #a5b4fc; /* Default punctuation color */
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.json-key {
  color: #38bdf8; /* Blue-cyan for keys */
  font-weight: 500;
}

.json-string {
  color: #34d399; /* Green for strings */
}

.json-number {
  color: #f59e0b; /* Amber/orange for numbers */
}

.json-boolean {
  color: #f472b6; /* Pink for booleans */
}

.json-null {
  color: #a78bfa; /* Purple for null */
}

.json-bracket {
  color: #e2e8f0;
}

.json-indent {
  padding-left: 1.5rem;
  border-left: 1px dotted rgba(59, 130, 246, 0.15);
  margin-left: 0.2rem;
}

/* Foldable blocks */
.json-foldable {
  position: relative;
}

.json-fold-btn {
  cursor: pointer;
  display: inline-block;
  user-select: none;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  font-size: 0.75rem;
  margin-right: 0.25rem;
}

.json-fold-btn:hover {
  color: var(--accent-cyan);
}

.json-collapsed {
  display: none;
}

.json-collapsed-text {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.8rem;
  cursor: pointer;
}

/* ==========================================================================
   AI STATEMENT SECTION
   ========================================================================== */

.ai-statement-card {
  background: linear-gradient(135deg, rgba(16, 24, 48, 0.7) 0%, rgba(9, 14, 28, 0.9) 100%);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 3rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.ai-statement-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

.ai-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 768px) {
  .ai-statement-card {
    padding: 1.75rem 1.5rem;
  }
  .ai-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }
}

.ai-icon-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  height: 140px;
}

.ai-floating-icons {
  width: 140px;
  height: 140px;
  background: rgba(59, 130, 246, 0.05);
  border: 1px dashed rgba(59, 130, 246, 0.25);
  border-radius: 50%;
  position: absolute;
  animation: rotate 30s linear infinite;
}

.ai-icon-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 10px rgba(14, 165, 233, 0.5));
  animation: pulseBrain 3s infinite alternate ease-in-out;
}

@keyframes pulseBrain {
  from {
    filter: drop-shadow(0 0 5px rgba(14, 165, 233, 0.4));
    transform: translate(-50%, -50%) scale(1);
  }
  to {
    filter: drop-shadow(0 0 15px rgba(14, 165, 233, 0.8));
    transform: translate(-50%, -50%) scale(1.08);
  }
}

.ai-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.ai-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.ai-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   WEB PROJECTS SECTION
   ========================================================================== */

.projects-section-header {
  text-align: center;
  margin-bottom: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.project-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-hover);
  box-shadow: var(--shadow-lg), 0 10px 30px -10px rgba(59, 130, 246, 0.15);
}

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

.project-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.project-title-icon {
  font-size: 1.75rem;
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 5px rgba(14, 165, 233, 0.3));
  transition: var(--transition-normal);
}

.project-card:hover .project-title-icon {
  color: var(--accent-blue);
  filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.6));
  transform: scale(1.1);
}

.project-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.tag {
  background: rgba(14, 165, 233, 0.05);
  border: 1px solid rgba(14, 165, 233, 0.12);
  color: var(--accent-cyan);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-weight: 500;
}

.project-btn-cta {
  align-self: flex-start;
  margin-top: 1rem;
  font-size: 0.9rem;
  padding: 0.7rem 1.4rem;
}

.project-btn-cta i {
  transition: transform var(--transition-fast);
}

.project-btn-cta:hover i {
  transform: translateX(3px);
}

@media (max-width: 576px) {
  .project-btn-cta {
    width: 100%;
  }
}

/* ==========================================================================
   3D PRINTING & INVENTIONS SECTION
   ========================================================================== */

/* RIBI Stile Fullwidth layout (images right, text left) */
.ribi-fullwidth {
  background: linear-gradient(135deg, rgba(13, 20, 44, 0.75) 0%, rgba(7, 10, 20, 0.9) 100%);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: 3rem;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.ribi-fullwidth:hover {
  border-color: rgba(59, 130, 246, 0.25);
  box-shadow: var(--shadow-lg), 0 0 35px rgba(59, 130, 246, 0.08);
}

.ribi-columns {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
}

.ribi-left-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem;
  gap: 1.25rem;
}

.ribi-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.ribi-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ribi-badge {
  align-self: flex-start;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: #a78bfa;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
}

.ribi-title {
  font-size: 2.25rem;
  font-weight: 800;
}

.ribi-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

.ribi-cta-container {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.ribi-btn-cta {
  background: linear-gradient(135deg, var(--accent-purple) 0%, #6d28d9 100%);
  color: var(--text-primary);
  border: none;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.25);
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  border-radius: 8px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-normal);
  cursor: pointer;
}

.ribi-btn-cta:hover {
  background: linear-gradient(135deg, #a78bfa 0%, #7c3aed 100%);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.ribi-btn-instagram {
  background: rgba(245, 158, 11, 0.05);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: #f59e0b;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-normal);
  cursor: pointer;
}

.ribi-btn-instagram:hover {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.45);
  color: #fbbf24;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.25);
}

.ribi-right-carousel {
  position: relative;
  width: 100%;
}

.ribi-right-carousel .carousel {
  width: 100%;
  aspect-ratio: 4 / 3;
}

.ribi-bottom-features {
  background: rgba(4, 6, 12, 0.45);
  border-top: 1px solid var(--glass-border);
  padding: 2.25rem 3rem;
}

.ribi-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.ribi-feature-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.ribi-feature-item i {
  color: var(--accent-cyan);
  font-size: 1.25rem;
  margin-top: 0.15rem;
}

.ribi-feature-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.ribi-feature-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

@media (max-width: 992px) {
  .ribi-columns {
    grid-template-columns: 1fr;
  }
  .ribi-left-content {
    padding: 2.5rem;
  }
  .ribi-right-carousel .carousel {
    aspect-ratio: 4 / 3;
    min-height: auto;
  }
  .ribi-bottom-features {
    padding: 2rem;
  }
  .ribi-features {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 576px) {
  .ribi-left-content {
    padding: 1.75rem;
  }
  .ribi-bottom-features {
    padding: 1.5rem 1.75rem;
  }
  .ribi-features {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

/* ==========================================================================
   CAROUSEL DESIGN SYSTEM (4:3 Aspect Ratio)
   ========================================================================== */

.carousel {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3; /* Fixed 4:3 ratio */
  background: #080c18;
  overflow: hidden;
}

.carousel-track-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-track {
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
  z-index: 1;
}

.carousel-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Covers the 4:3 frame perfectly */
  display: block;
  z-index: 3;
  position: relative;
}

.carousel-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(16, 24, 48, 0.95) 0%, rgba(6, 9, 19, 1) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 1.5rem;
  text-align: center;
  z-index: 2;
}

.carousel-placeholder i {
  font-size: 2.75rem;
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 10px rgba(14, 165, 233, 0.4));
  animation: floatIcon 4s ease-in-out infinite alternate;
}

@keyframes floatIcon {
  from { transform: translateY(0); }
  to { transform: translateY(-4px); }
}

.carousel-placeholder span {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  max-width: 80%;
  opacity: 0.8;
  line-height: 1.4;
}

/* Arrows controls */
.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: rgba(10, 15, 36, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.carousel:hover .carousel-control {
  opacity: 1;
  visibility: visible;
}

.carousel-control.prev {
  left: 0.75rem;
}

.carousel-control.next {
  right: 0.75rem;
}

.carousel-control:hover {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: white;
  transform: translateY(-50%) scale(1.08);
}

.carousel-control:active {
  transform: translateY(-50%) scale(0.95);
}

/* Indicator dots */
.carousel-dots {
  position: absolute;
  bottom: 0.75rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 10;
  background: rgba(6, 9, 19, 0.5);
  padding: 0.35rem 0.65rem;
  border-radius: 100px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid var(--glass-border);
}

.carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.carousel-dot.active {
  background: var(--accent-cyan);
  transform: scale(1.2);
  box-shadow: 0 0 8px var(--accent-cyan);
}

/* Layout Adjustments for Web Project Cards containing carousels */
.project-card {
  padding: 0 !important;
  overflow: hidden;
}

.project-header {
  padding: 1.5rem 1.5rem 0.5rem 1.5rem;
}

.project-info {
  padding: 0 1.5rem;
}

.project-tags {
  padding: 0 1.5rem;
}

.project-btn-cta {
  margin: 0 1.5rem 1.5rem 1.5rem !important;
}

/* Three column grid for secondary physical creations */
.inventions-three-column {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.invention-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.invention-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-hover);
  box-shadow: var(--shadow-lg), 0 10px 30px rgba(59, 130, 246, 0.08);
}

.invention-card .carousel {
  aspect-ratio: 4 / 3;
}

.invention-details {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex-grow: 1;
}

.invention-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.invention-title-icon {
  font-size: 1.25rem;
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 5px rgba(14, 165, 233, 0.3));
}

.invention-name {
  font-size: 1.15rem;
  font-weight: 700;
}

.invention-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

@media (max-width: 992px) {
  .inventions-three-column {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .inventions-three-column {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

#contatti {
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}

.contact-inline {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.contact-title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

@media (max-width: 768px) {
  .contact-title {
    font-size: 1.5rem;
  }
}

.contact-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 600px;
}

/* Minimalist Inline Contact widget */
.contact-links-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.contact-link-item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.15rem;
  font-family: var(--font-sans);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.contact-link-item > i {
  font-size: 1.35rem;
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 5px rgba(14, 165, 233, 0.3));
}

.contact-link-item a {
  font-weight: 600;
  text-decoration: none;
  color: var(--text-primary);
  border-bottom: 1px dashed var(--glass-border-hover);
  padding-bottom: 2px;
  transition: var(--transition-fast);
}

.contact-link-item a:hover {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
  text-shadow: 0 0 15px rgba(14, 165, 233, 0.6);
}

.contact-link-item button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.contact-link-item button:hover {
  color: var(--text-primary);
  transform: scale(1.15);
}

.contact-link-item button:active {
  transform: scale(0.9);
}

.email-copy-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.5);
}

.email-copy-btn:active {
  transform: scale(0.95);
}

/* Floating copy success notification */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(16, 185, 129, 0.95); /* green */
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
  background: #04060c;
  padding: 3rem 0;
  border-top: 1px solid var(--glass-border);
}

.footer-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

@media (max-width: 576px) {
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-socials {
  display: flex;
  gap: 1.25rem;
}

.footer-social-link {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: var(--transition-normal);
}

.footer-social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.05);
  transform: translateY(-2px);
}