/*
===================================
  PORTFOLIO PROFESSIONALE - STYLE CSS
  Tema: Dark con Viola e Celeste
  Font: Poppins + Space Grotesk
===================================
*/

/* ========================================
   1. CSS VARIABLES (Custom Properties)
======================================== */
:root {
  /* Colori Principali */
  --color-primary: #6c3bff;           /* Viola principale */
  --color-primary-dark: #5929d9;      /* Viola scuro */
  --color-primary-light: #8c5bff;     /* Viola chiaro */
  
  --color-accent: #3bdbff;            /* Celeste/azzurro */
  --color-accent-dark: #29b8d9;       /* Celeste scuro */
  --color-accent-light: #5be1ff;      /* Celeste chiaro */
  
  /* Colori Background */
  --color-bg-primary: #0a0a0f;        /* Nero/viola molto scuro */
  --color-bg-secondary: #12121a;      /* Grigio viola scuro */
  --color-bg-card: #1a1a27;           /* Grigio viola per card */
  
  /* Colori Testo */
  --color-text-primary: #e9e9f0;      /* Bianco sporco */
  --color-text-secondary: #a8a8b8;    /* Grigio chiaro */
  --color-text-muted: #6e6e7e;        /* Grigio medio */
  
  /* Typography */
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Space Grotesk', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  
  /* Transizioni */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(108, 59, 255, 0.3);
  --shadow-glow-accent: 0 0 20px rgba(59, 219, 255, 0.3);
}

/* ========================================
   2. GLOBAL STYLES
======================================== */
body {
  font-family: var(--font-primary);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  overflow-x: hidden;
  line-height: 1.7;
}

/* Previeni scroll quando menu mobile è aperto */
body.menu-open {
  overflow: hidden;
}

/* Container generico */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Selezione testo personalizzata */
::selection {
  background-color: var(--color-primary);
  color: var(--color-text-primary);
}

/* Scrollbar personalizzata */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-light);
}

/* ========================================
   3. NAVIGATION
======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(108, 59, 255, 0.1);
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
  will-change: background-color, box-shadow;
  transform: translateZ(0);
  opacity: 1;
  visibility: visible;
}

.nav__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.2rem var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform var(--transition-fast);
  display: inline-block;
  opacity: 1;
  visibility: visible;
}

/* Fallback per browser che non supportano background-clip */
@supports not (background-clip: text) or not (-webkit-background-clip: text) {
  .nav__logo {
    color: var(--color-primary);
    background: none;
  }
}

.nav__logo:hover {
  transform: scale(1.05);
}

.nav__menu {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  opacity: 1;
  visibility: visible;
}

.nav__link {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
  opacity: 1;
  visibility: visible;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: var(--transition-normal);
}

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

.nav__link:hover::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--color-text-primary);
  padding: 0.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
  z-index: 10;
}

.nav__toggle:hover {
  color: var(--color-primary);
  transform: scale(1.1);
}

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

/* Background gradient animato */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(108, 59, 255, 0.1) 0%,
    transparent 50%
  );
  animation: rotate 20s linear infinite;
}

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

.hero__container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__content {
  /* opacity gestita da GSAP */
}

.hero__greeting {
  color: var(--color-accent);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.hero__name {
  font-family: var(--font-secondary);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-xs);
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__role {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.hero__tagline {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  max-width: 500px;
  line-height: 1.8;
}

.hero__highlight {
  color: var(--color-accent);
  font-weight: 600;
}

.hero__cta {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.hero__cta .btn {
  opacity: 1;
  visibility: visible;
}

/* Blocco codice visuale */
.hero__visual {
  /* opacity gestita da GSAP */
}

.hero__code-block {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(108, 59, 255, 0.2);
}

.code__header {
  background-color: var(--color-bg-secondary);
  padding: 1rem 1.5rem;
  display: flex;
  gap: 0.5rem;
}

.code__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code__dot--1 { background-color: #ff5f57; }
.code__dot--2 { background-color: #ffbd2e; }
.code__dot--3 { background-color: #28ca42; }

.code__body {
  padding: 1.5rem;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.8;
  overflow-x: auto;
}

.code__keyword { color: var(--color-primary); font-weight: 600; }
.code__var { color: var(--color-accent); }
.code__prop { color: #e9e9f0; }
.code__string { color: #98d379; }
.code__function { color: var(--color-accent); }

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 10px); }
}

/* ========================================
   5. BUTTONS
======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-text-primary);
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(108, 59, 255, 0.5);
}

.btn--secondary {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

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

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ========================================
   6. SECTION STYLES
======================================== */
section {
  padding: var(--spacing-xl) 0;
}

.section__title {
  font-family: var(--font-secondary);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section__number {
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* ========================================
   7. ABOUT SECTION
======================================== */
.about {
  background-color: var(--color-bg-secondary);
}

.about__content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about__text {
  /* opacity gestita da GSAP */
}

.about__paragraph {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.about__paragraph strong {
  color: var(--color-primary);
  font-weight: 600;
}

.highlight {
  color: var(--color-accent);
  font-weight: 600;
}

.about__details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.about__detail {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.about__detail i {
  color: var(--color-accent);
  width: 20px;
}

/* About Image */
.about__image {
  /* opacity gestita da GSAP */
}

.about__image-wrapper {
  position: relative;
  max-width: 350px;
  margin: 0 auto;
}

.about__image-border {
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  z-index: 1;
}

.about__image-bg {
  position: relative;
  padding-bottom: 100%;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  z-index: 2;
}

.about__placeholder {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  color: var(--color-primary);
  opacity: 0.3;
}

.about__profile-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-md);
  transition: var(--transition-slow);
}

.about__image-wrapper:hover .about__profile-img {
  transform: scale(1.05);
}

/* ========================================
   8. SKILLS SECTION
======================================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.skill-card {
  background-color: var(--color-bg-card);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid rgba(108, 59, 255, 0.1);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.skill-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.skill-card__icon {
  font-size: 3rem;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  transition: var(--transition-normal);
  text-align: center;
}

.skill-card:hover .skill-card__icon {
  transform: scale(1.1);
  color: var(--color-primary);
}

.skill-card__title {
  font-family: var(--font-secondary);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.skill-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   9. PROJECTS SECTION
======================================== */
.projects {
  background-color: var(--color-bg-secondary);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(108, 59, 255, 0.1);
  transition: all var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-primary);
}

.project-card__image {
  position: relative;
  padding-bottom: 60%;
  background-color: var(--color-bg-secondary);
  overflow: hidden;
}

.project-card__placeholder {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--color-primary);
  opacity: 0.3;
}

.project-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(108, 59, 255, 0.9), rgba(59, 219, 255, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  opacity: 0;
  transition: var(--transition-normal);
}

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

.project-card__link {
  width: 50px;
  height: 50px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: white;
  transition: var(--transition-fast);
  backdrop-filter: blur(5px);
}

.project-card__link:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.project-card__content {
  padding: var(--spacing-md);
}

.project-card__title {
  font-family: var(--font-secondary);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.project-card__desc {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  padding: 0.4rem 1rem;
  background-color: rgba(108, 59, 255, 0.2);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(59, 219, 255, 0.3);
}

/* ========================================
   10. CONTACT SECTION
======================================== */
.contact__content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
}

.contact__info {
  /* opacity gestita da GSAP */
}

.contact__subtitle {
  font-family: var(--font-secondary);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.contact__text {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.contact__social {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 50px;
  height: 50px;
  background-color: var(--color-bg-card);
  border: 1px solid rgba(108, 59, 255, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
  border-color: transparent;
}

/* Form */
.contact__form {
  /* opacity gestita da GSAP */
}

.form__group {
  margin-bottom: var(--spacing-md);
}

.form__label {
  display: block;
  color: var(--color-text-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  font-size: 0.95rem;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 1rem;
  background-color: var(--color-bg-card);
  border: 2px solid rgba(108, 59, 255, 0.2);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: 1rem;
  transition: all var(--transition-normal);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108, 59, 255, 0.1);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-text-muted);
}

.form__textarea {
  resize: vertical;
  min-height: 150px;
}

/* ========================================
   11. FOOTER
======================================== */
.footer {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid rgba(108, 59, 255, 0.1);
}

.footer__text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.footer__text strong {
  color: var(--color-primary);
}

.footer__copyright {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ========================================
   12. RESPONSIVE DESIGN
======================================== */

/* Tablet */
@media (max-width: 968px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__cta {
    justify-content: center;
  }
  
  .hero__tagline {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }
  
  .about__content {
    grid-template-columns: 1fr;
  }
  
  .contact__content {
    grid-template-columns: 1fr;
  }
  
  .section__title {
    font-size: 2rem;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }
  
  .nav__menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    max-height: calc(100vh - 70px);
    background-color: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--spacing-md);
    transition: left var(--transition-normal);
    border-bottom: 1px solid rgba(108, 59, 255, 0.2);
    overflow-y: auto;
    z-index: 999;
  }
  
  .nav__menu.active {
    left: 0;
  }
  
  .nav__toggle {
    display: block;
  }
  
  .nav__item {
    width: 100%;
  }
  
  .nav__link {
    display: block;
    padding: 1rem;
    text-align: center;
  }
  
  .skills__grid {
    grid-template-columns: 1fr;
  }
  
  .projects__grid {
    grid-template-columns: 1fr;
  }
  
  .hero__code-block {
    display: none;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .hero__cta {
    flex-direction: column;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .section__title {
    font-size: 1.75rem;
  }
  
  .hero__name {
    font-size: 2rem;
  }
  
  .hero__role {
    font-size: 1.5rem;
  }
}