/*
 * the usual neXt - Smart Link Tree Styles
 * Designed for Gen Z audience with immersive tech aesthetic
 * Version: 1.0.0
 */

/* ========================================
   CSS CUSTOM PROPERTIES & VARIABLES
======================================== */
:root {
  /* Brand Colors - Immersive Tech Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --secondary-gradient: linear-gradient(45deg, #ff6b6b 0%, #ffd93d 50%, #6bcf7f 100%);
  --accent-gradient: linear-gradient(90deg, #a8edea 0%, #fed6e3 100%);
  --dark-gradient: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
  
  /* Glass Effect Colors */
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-hover: rgba(255, 255, 255, 0.15);
  --glass-active: rgba(255, 255, 255, 0.25);
  
  /* Immersive Colors */
  --neon-blue: #00d4ff;
  --neon-purple: #b794f6;
  --neon-pink: #f093fb;
  --neon-green: #68d391;
  --hologram: linear-gradient(45deg, var(--neon-blue), var(--neon-purple), var(--neon-pink));
  
  /* Typography */
  --font-primary: 'Inter', 'SF Pro Display', system-ui, -apple-system, sans-serif;
  --font-secondary: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  /* Shadows & Effects */
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.15);
  --shadow-strong: 0 20px 40px rgba(0, 0, 0, 0.2);
  --shadow-neon: 0 0 20px rgba(0, 212, 255, 0.3);
  --shadow-glow: 0 0 30px rgba(255, 255, 255, 0.1);
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Backdrop Filters */
  --blur-sm: blur(8px);
  --blur-md: blur(12px);
  --blur-lg: blur(16px);
  
  /* Z-index Scale */
  --z-loading: 1000;
  --z-modal: 900;
  --z-header: 100;
  --z-content: 10;
  --z-background: 1;
}

/* ========================================
   RESET & BASE STYLES
======================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.6;
  color: white;
  background: var(--primary-gradient);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 219, 226, 0.2) 0%, transparent 50%);
  animation: backgroundShift 20s ease-in-out infinite;
  z-index: var(--z-background);
  pointer-events: none;
}

@keyframes backgroundShift {
  0%, 100% { transform: translateX(0) translateY(0) scale(1); }
  33% { transform: translateX(-20px) translateY(-30px) scale(1.05); }
  66% { transform: translateX(20px) translateY(20px) scale(0.95); }
}

/* ========================================
   TYPOGRAPHY
======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.logo {
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  font-weight: 800;
  background: var(--secondary-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradientShift 4s ease-in-out infinite;
  letter-spacing: -0.02em;
  text-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.subtitle {
  font-size: clamp(1rem, 3vw, 1.25rem);
  font-weight: 300;
  opacity: 0.9;
  letter-spacing: 0.01em;
}

.question {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
  margin-bottom: var(--space-xl);
  background: linear-gradient(135deg, white 0%, rgba(255, 255, 255, 0.8) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ========================================
   LAYOUT COMPONENTS
======================================== */
.container {
    max-width: 100vw;
    min-height: auto;  /* CAMBIA da "min-height: 100vh" a "min-height: auto" */
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: var(--z-content);
}

.header {
  padding: var(--space-lg);
  text-align: center;
  position: relative;
  z-index: var(--z-header);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;  /* CAMBIA da "justify-content: center" a "justify-content: flex-start" */
    padding: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}
.footer {
    padding: var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: var(--blur-md);
    border-top: 1px solid var(--glass-border);
    margin-top: var(--space-lg);  /* CAMBIA da "margin-top: auto" a "margin-top: var(--space-lg)" */
}

/* ========================================
   LANGUAGE SELECTOR
======================================== */
.lang-selector {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  display: flex;
  gap: var(--space-xs);
  z-index: 20;
}

.lang-btn {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-sm);
  border: 1px solid var(--glass-border);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.lang-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--hologram);
  transition: left var(--transition-medium);
  z-index: -1;
}

.lang-btn:hover::before,
.lang-btn.active::before {
  left: 0;
}

.lang-btn:hover,
.lang-btn.active {
  background: var(--glass-hover);
  border-color: var(--glass-active);
  transform: translateY(-1px);
  box-shadow: var(--shadow-neon);
}

.lang-btn.active {
  color: white;
  font-weight: 700;
}

/* ========================================
   NAVIGATION & STEPS
======================================== */
.step {
  opacity: 0;
  transform: translateY(30px) scale(0.95);
  transition: all var(--transition-slow);
  pointer-events: none;
}

.step.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.step.hidden {
  display: none;
}

.back-btn {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-sm);
  border: 1px solid var(--glass-border);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  margin: 0 auto var(--space-lg);
  display: none;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition-medium);
  text-decoration: none;
}

.back-btn:hover {
  background: var(--glass-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.back-btn.visible {
  display: flex;
}

/* ========================================
   OPTIONS & CARDS
======================================== */
.options {
    display: grid;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);  /* Riduci da var(--space-xl) */
}

.options.three-cols {
  grid-template-columns: 1fr;
}

.options.two-cols {
  grid-template-columns: 1fr;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.option-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-md);
  border: 2px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-medium);
  text-decoration: none;
  color: white;
  display: block;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* Animated border effect */
.option-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--hologram);
  border-radius: var(--radius-xl);
  padding: 2px;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: subtract;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  opacity: 0;
  transition: opacity var(--transition-medium);
  z-index: -1;
}

.option-card:hover {
  background: var(--glass-hover);
  border-color: transparent;
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-strong), var(--shadow-glow);
}

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

.option-card:active {
  transform: translateY(-4px) scale(1.01);
}

.option-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  display: block;
  text-align: center;
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
  animation: float 3s ease-in-out infinite;
}

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

.option-title {
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  text-align: center;
  background: linear-gradient(135deg, white 0%, rgba(255, 255, 255, 0.9) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.option-desc {
  font-size: clamp(0.9rem, 2.5vw, 1rem);
  opacity: 0.85;
  line-height: 1.5;
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   QUICK LINKS & FOOTER
======================================== */
.quick-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.quick-link {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-sm);
  border: 1px solid var(--glass-border);
  color: white;
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-medium);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  position: relative;
  overflow: hidden;
}

.quick-link::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
  transition: all var(--transition-medium);
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.quick-link:hover::before {
  width: 200px;
  height: 200px;
}

.quick-link:hover {
  background: var(--glass-hover);
  border-color: var(--glass-active);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.footer-text {
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.7;
  margin-top: var(--space-md);
  color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   LOADING ANIMATION
======================================== */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: var(--z-loading);
  transition: opacity var(--transition-slow);
}

.loading.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top: 3px solid var(--neon-blue);
  border-right: 3px solid var(--neon-purple);
  border-radius: 50%;
  animation: spin 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */
@media (max-width: 480px) {
  :root {
    --space-xs: 0.4rem;
    --space-sm: 0.8rem;
    --space-md: 1.2rem;
    --space-lg: 1.6rem;
    --space-xl: 2.4rem;
  }
  
  .header {
    padding: var(--space-md);
  }
  
  .main-content {
    padding: var(--space-md);
  }
  
  .lang-selector {
    top: var(--space-md);
    right: var(--space-md);
  }
  
  .option-card {
    padding: var(--space-lg) var(--space-md);
  }
  
  .option-icon {
    font-size: 2.5rem;
  }
  
  .quick-links {
    gap: var(--space-sm);
  }
  
  .quick-link {
    font-size: 0.8rem;
    padding: var(--space-xs) var(--space-sm);
  }
}

@media (min-width: 768px) {
  .options.three-cols {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .options.two-cols {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .option-card {
    padding: var(--space-2xl) var(--space-xl);
  }
  
  .option-icon {
    font-size: 3.5rem;
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
    margin: 0 auto;
  }
}

/* ========================================
   ACCESSIBILITY IMPROVEMENTS
======================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .option-icon {
    animation: none;
  }
  
  body::before {
    animation: none;
  }
  
  .logo {
    animation: none;
  }
}

@media (prefers-color-scheme: dark) {
  /* Already optimized for dark mode */
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-hover: rgba(255, 255, 255, 0.25);
  }
  
  .option-card {
    border-width: 3px;
  }
}

/* ========================================
   PRINT STYLES
======================================== */
@media print {
  .loading,
  .lang-selector,
  .back-btn,
  .quick-links {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .container {
    max-width: none !important;
  }
}

/* Fix per nascondere completamente gli step non attivi */
.step:not(.active) {
    display: none !important;
}

/* Alternativa se vuoi mantenere la classe hidden */
.step.hidden {
    display: none !important;
}

/* Assicura che solo lo step attivo sia visibile */
.step {
    display: none;
}

.step.active {
    display: block;
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* ========================================
   NUOVO LAYOUT HEADER CON LOGO
======================================== */

/* Rimuovi o commenta il vecchio stile .logo con gradient text */
/*
.logo {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    ...
}
*/

/* Nuovo layout header */
.header {
    padding: var(--space-md);
    position: relative;
    z-index: var(--z-header);
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
}

/* Container del logo */
.logo-container {
    position: fixed;  /* O absolute se preferisci che scrolli */
    top: var(--space-md);
    left: var(--space-md);
    z-index: 110;
}

.logo-img {
    height: 50px;  /* Altezza fissa per desktop */
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.3));
    transition: transform var(--transition-medium);
}

.logo-img:hover {
    transform: scale(1.05);
}

/* Pulsanti lingua rimangono in alto a destra */
.lang-selector {
    position: fixed;  /* O absolute se preferisci che scrolli */
    top: var(--space-md);
    right: var(--space-md);
    display: flex;
    gap: var(--space-xs);
    z-index: 110;
}

/* Contenuto header centrato */
.header-content {
    width: 100%;
    text-align: center;
    margin-top: calc(50px + var(--space-lg));  /* Spazio per logo e padding */
}

/* Sottotitolo centrato */
.subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    font-weight: 300;
    opacity: 0.9;
    letter-spacing: 0.01em;
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   RESPONSIVE PER MOBILE
======================================== */

@media (max-width: 768px) {
    /* Header mobile */
    .header {
        padding: var(--space-sm);
    }
    
    /* Logo più piccolo su mobile */
    .logo-container {
        position: fixed;
        top: var(--space-sm);
        left: var(--space-sm);
    }
    
    .logo-img {
        height: 35px;  /* Più piccolo su mobile */
    }
    
    /* Pulsanti lingua più compatti */
    .lang-selector {
        top: var(--space-sm);
        right: var(--space-sm);
    }
    
    .lang-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
    
    /* Contenuto header con più spazio sopra */
    .header-content {
        margin-top: calc(35px + var(--space-xl));
    }
    
    /* Sottotitolo più piccolo */
    .subtitle {
        font-size: 1rem;
        padding: 0 var(--space-sm);
    }
}

/* Per schermi molto piccoli */
@media (max-width: 360px) {
    .logo-img {
        height: 30px;
    }
    
    .lang-btn {
        padding: 5px 8px;
        font-size: 0.7rem;
    }
}

/* Opzione: Header fisso che rimane in alto durante lo scroll */
.header-fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--blur-md);
    border-bottom: 1px solid var(--glass-border);
}

/* Se vuoi che il contenuto principale abbia spazio quando l'header è fisso */
.header-fixed + .main-content {
    margin-top: 120px;  /* Aggiusta in base all'altezza del tuo header */
}