/* --- VARIABLES --- */
:root {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --text-muted: #94a3b8;
  --nav-bg: rgba(15, 23, 42, 0.95);
  --text-white: #ffffff;

  --font-main: 'Inter', sans-serif;
  --font-display: 'Playfair Display', serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-main);
  background-color: #0f172a;
  color: var(--text-white);
  overflow-x: hidden;
}

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

/* --- NAVBAR --- */
.navbar {
  position: fixed; top: 0; width: 100%; z-index: 1000; padding: 1.5rem 0;
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.9) 0%, transparent 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05); transition: all 0.3s ease;
}
.navbar.scrolled {
  background: var(--nav-bg); padding: 1rem 0; backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.container {
  max-width: 1200px; margin: 0 auto; padding: 0 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
}
.logo {
  font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em;
  display: flex; align-items: center; gap: 0.5rem; color: white;
  transition: transform var(--transition-fast);
}
.logo:hover { transform: scale(1.02); }
.logo span { color: var(--primary); }
.nav-menu { display: flex; align-items: center; gap: 2.5rem; }
.nav-link { font-size: 0.95rem; font-weight: 500; color: var(--text-muted); position: relative; padding: 0.2rem 0; }
.nav-link:hover, .nav-link.active { color: white; }
.nav-link::after {
  content: ''; position: absolute; width: 0; height: 2px; bottom: -2px; left: 0;
  background-color: var(--primary); transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

/* SWIPE BUTTON */
.swipe-hover-effect {
  position: relative; background: rgba(255,255,255,0.05);
  border: 1px solid rgba(231, 235, 252, 0.5); overflow: hidden;
  transition: border-color 0.3s; z-index: 1;
}
.swipe-hover-effect::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(59, 130, 246, 0.1); border: 2px solid var(--primary);
  box-sizing: border-box; clip-path: inset(0 100% 0 0);
  transition: clip-path 0.4s cubic-bezier(0.25, 1, 0.5, 1); z-index: -1;
}
.swipe-hover-effect:hover { border-color: transparent; }
.swipe-hover-effect:hover::before { clip-path: inset(0 0 0 0); }
.lang-btn {
  display: flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0.8rem;
  border-radius: 4px; font-size: 0.8rem; font-weight: 600; color: rgb(231, 235, 252);
  cursor: pointer; background: transparent;
}

/* Mobile Toggle */
.menu-toggle { display: none; cursor: pointer; z-index: 1100; }
.menu-toggle span { display: block; width: 25px; height: 2px; background: white; margin: 6px 0; transition: 0.3s; }
.menu-toggle.active span:nth-child(1) { transform: rotate(-45deg) translate(-6px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(45deg) translate(-6px, -5px); }
@media (max-width: 768px) {
  .nav-menu {
    position: fixed; top: 0; right: 0; width: 100%; height: 100vh;
    background: #0f172a; flex-direction: column; justify-content: center;
    transform: translateX(100%); transition: 0.4s ease-in-out;
  }
  .nav-menu.active { transform: translateX(0); }
  .menu-toggle { display: block; }
}

/* --- LOGIN STYLES --- */
.login-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
  background: #000; display: flex; align-items: center; justify-content: center; z-index: 2000;
}
.login-bg-img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: url('https://images.unsplash.com/photo-1470252649378-9c29740c9fa8?q=80&w=2070&auto=format&fit=crop') no-repeat center center/cover;
  opacity: 0.4; filter: blur(8px); transform: scale(1.1);
}
.login-card {
  position: relative; z-index: 10;
  background: rgba(255, 255, 255, 0.1); backdrop-filter: blur(20px);
  padding: 4rem 3rem;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.2);
  text-align: center; max-width: 450px; width: 90%; color: white;
  box-shadow: 0 30px 60px rgba(0,0,0,0.5);
}
.login-title { font-family: var(--font-display); font-size: 2.5rem; margin-bottom: 0.5rem; font-weight: 400; font-style: italic;}
.login-input {
  width: 100%; padding: 12px 0; background: transparent; border: none;
  border-bottom: 1px solid rgba(255,255,255,0.5); color: white;
  font-size: 1.1rem; text-align: center; margin: 2rem 0; outline: none; transition: 0.3s;
  font-family: var(--font-main);
}
.login-input:focus { border-bottom-color: var(--primary); }
.login-btn {
  padding: 12px 40px; background: white; color: black; border: none;
  font-family: var(--font-main); text-transform: uppercase; letter-spacing: 2px;
  font-size: 0.8rem; font-weight: 700; cursor: pointer; transition: 0.3s;
  border-radius: 4px;
}
.login-btn:hover { background: var(--primary); color: white; }

/* BACK LINK STYLE */
.back-link {
  display: inline-flex; align-items: center; gap: 0.5rem; margin-top: 2rem;
  font-family: var(--font-main); font-size: 0.85rem; color: rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease; padding-bottom: 2px; border-bottom: 1px solid transparent;
  text-transform: uppercase; letter-spacing: 1px;
}
.back-link:hover {
  color: white; border-bottom-color: white; transform: translateX(-3px);
}

/* --- STORYTELLING SECTIONS (SLIDESHOW) --- */
.story-container { width: 100%; }
.story-section {
  position: relative; height: 100vh; width: 100%;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}

/* Slideshow Engine */
.bg-slideshow {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  z-index: 0;
}
.bg-slide {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover;
  object-position: center center;
  opacity: 0;
  /* MODIFICA IMPORTANTE: Invertiamo lo zoom */
  /* Partiamo leggermente zoomati (1.03) */
  transform: scale(1.03);
  transition: opacity 2.5s ease-in-out, transform 10s linear;
}
.bg-slide.active {
  opacity: 1;
  /* MODIFICA IMPORTANTE: Arriviamo alla dimensione naturale (1) */
  /* Questo riduce al minimo il taglio dell'immagine */
  transform: scale(1);
}

.story-overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.4), rgba(0,0,0,0.8));
  z-index: 1;
}
.story-content {
  position: relative; z-index: 2; text-align: center; max-width: 900px; padding: 0 2rem;
  opacity: 0; transform: translateY(50px); transition: all 1s ease-out;
}
.story-content.visible { opacity: 1; transform: translateY(0); }

.story-tag {
  font-family: var(--font-main); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 4px;
  color: var(--primary); margin-bottom: 1.5rem; display: block; font-weight: 600;
}
.story-title {
  font-family: var(--font-display); font-size: 4rem; line-height: 1.1; margin-bottom: 2rem; font-weight: 400;
}
.story-desc {
  font-family: var(--font-main); font-size: 1.2rem; line-height: 1.8;
  color: rgba(255,255,255,0.9); font-weight: 300; max-width: 700px; margin: 0 auto;
}

@media (max-width: 768px) {
  .story-section { height: auto; min-height: 90vh; padding: 6rem 0; }
  .bg-slideshow, .bg-slide { height: 100%; min-height: 90vh; }
  .story-title { font-size: 2.5rem; }
  .story-desc { font-size: 1rem; }
}

.scroll-down {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  z-index: 10; animation: bounce 2s infinite; opacity: 0.7;
}
@keyframes bounce { 0%, 20%, 50%, 80%, 100% {transform:translate(-50%, 0);} 40% {transform:translate(-50%, -10px);} 60% {transform:translate(-50%, -5px);} }

.mini-footer {
  position: absolute; bottom: 10px; width: 100%; text-align: center;
  font-size: 0.8rem; color: rgba(255,255,255,0.4); z-index: 5;
}

.logout-btn {
  position: fixed; bottom: 20px; right: 20px; z-index: 100;
  background: rgba(255,255,255,0.1); backdrop-filter: blur(10px);
  padding: 10px 20px; border-radius: 30px; border: 1px solid rgba(255,255,255,0.2);
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase; font-family: var(--font-main);
}
.logout-btn:hover { background: rgba(239, 68, 68, 0.8); border-color: transparent; }