/* =========================================
   VARIABILI E RESET GLOBALE
   ========================================= */
:root {
    --bg-dark: #0f1115; 
    --card-bg: #1a1d24;
    --card-img-bg: #121418;
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --neon-glow: #0ea5e9; 
    --border-color: rgba(255,255,255,0.05);
}

body.light-mode {
    --bg-dark: #f8fafc;
    --card-bg: #ffffff;
    --card-img-bg: #f1f5f9;
    --text-main: #0f1115;
    --text-muted: #475569;
    --accent: #2563eb;
    --neon-glow: #0284c7;
    --border-color: rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

html, body {
    overflow-x: hidden;
    position: relative;
    width: 100%;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* =========================================
   HEADER & NAVBAR
   ========================================= */
header {
    width: 100%;
    padding: 15px 50px;
    background-color: var(--bg-dark);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

nav { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; }
.nav-menu { display: flex; align-items: center; gap: 25px; list-style: none; }

.logo { font-size: 1.5rem; font-weight: 800; color: var(--text-main); text-decoration: none; letter-spacing: 2px; transition: 0.3s; }
.logo:hover { text-shadow: 0 0 10px var(--neon-glow); }

.nav-menu a { color: var(--text-muted); text-decoration: none; font-weight: 600; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; transition: 0.3s; }
.nav-menu a:hover { color: var(--text-main); text-shadow: 0 0 8px var(--neon-glow); }

.theme-btn, .menu-btn { background: none; border: none; color: var(--text-main); font-size: 1.1rem; cursor: pointer; display: flex; align-items: center; padding: 5px; transition: 0.3s; }
.menu-btn { display: none; }
.theme-btn:hover { transform: scale(1.1); color: var(--neon-glow); }

/* =========================================
   HOME & GRIGLIA
   ========================================= */
.intro { max-width: 1200px; margin: 80px auto 60px auto; padding: 0 20px; text-align: left; }
.intro h2 { font-size: 2.5rem; font-weight: 800; margin-bottom: 10px; }
.intro p { font-size: 1.2rem; color: var(--text-muted); }

#progetti { max-width: 1200px; margin: 0 auto 100px auto; padding: 0 20px; }
.grid-container { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }

.card { background-color: var(--card-bg); border-radius: 12px; overflow: hidden; text-decoration: none; color: var(--text-main); border: 2px solid transparent; transition: 0.3s; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
.card:hover { transform: translateY(-8px); }

@keyframes snakeNeon {
    0%, 100% { border-color: transparent; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
    15% { border-color: var(--neon-glow); box-shadow: 0 0 20px rgba(14, 165, 233, 0.6), inset 0 0 10px rgba(14, 165, 233, 0.2); }
    30% { border-color: transparent; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
}
.card:nth-child(1) { animation: snakeNeon 6s infinite ease-in-out; animation-delay: 0s; }
.card:nth-child(2) { animation: snakeNeon 6s infinite ease-in-out; animation-delay: 2s; }
.card:nth-child(3) { animation: snakeNeon 6s infinite ease-in-out; animation-delay: 4s; }

.card-image { height: 200px; background-color: var(--card-img-bg); display: flex; justify-content: center; align-items: center; transition: 0.3s; }
.placeholder-icon { font-size: 3.5rem; color: var(--accent); transition: 0.3s; }
.card:hover .placeholder-icon { transform: scale(1.1); color: var(--neon-glow); text-shadow: 0 0 15px var(--neon-glow); }
.card-content { padding: 25px; }
.card-content h3 { font-size: 1.3rem; margin-bottom: 10px; }
.card-content p { color: var(--text-muted); font-size: 0.95rem; }

/* INGRANAGGIO ANIMATO */
@keyframes spin { 100% { transform: rotate(360deg); } }
.spinning-gear { animation: spin 5s linear infinite; }

/* =========================================
   PAGINE PROGETTO (DETTAGLIO)
   ========================================= */
.project-detail { background-color: var(--bg-dark); color: var(--text-main); transition: 0.3s; max-width: 1200px; margin: 60px auto; padding: 0 20px; }

.project-title-container { display: flex; align-items: center; gap: 30px; margin-bottom: 60px; }
.bot-logo-img { 
    width: 100px; height: 100px; border-radius: 50%; 
    border: 2px solid var(--neon-glow); box-shadow: 0 0 15px var(--neon-glow); 
    background-color: var(--card-bg); display: flex; justify-content: center; align-items: center; 
    font-size: 3.5rem; color: var(--neon-glow); flex-shrink: 0; object-fit: cover;
}
.tagline { color: var(--neon-glow); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

.project-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 60px; margin-bottom: 80px; align-items: start; }
.project-info { background-color: transparent !important; border: none !important; }
.project-info h1, .project-info h2 { margin-bottom: 20px; font-size: 1.8rem; color: var(--text-main); }
.project-info p { color: var(--text-muted); margin-bottom: 30px; font-size: 1.1rem; }

.tech-stack ul { list-style: none; margin: 20px 0 40px 0; display: flex; flex-wrap: wrap; gap: 15px; }
.tech-stack li { background: var(--card-bg); padding: 8px 16px; border-radius: 20px; font-size: 0.9rem; border: 1px solid var(--border-color); color: var(--text-main); transition: 0.3s; }
.tech-stack i { margin-right: 8px; color: var(--accent); }

.project-buttons { display: flex; gap: 20px; }
.btn-neon { background: var(--accent); color: white; padding: 12px 25px; border-radius: 8px; text-decoration: none; font-weight: 700; transition: 0.3s; box-shadow: 0 0 10px rgba(59, 130, 246, 0.4); display: inline-flex; align-items: center; gap: 8px; }
.btn-neon:hover { box-shadow: 0 0 20px var(--neon-glow); transform: scale(1.05); color: white; }
.btn-outline { border: 1px solid var(--text-muted); color: var(--text-main); padding: 12px 25px; border-radius: 8px; text-decoration: none; font-weight: 700; transition: 0.3s; display: inline-flex; align-items: center; gap: 8px; }
.btn-outline:hover { border-color: var(--text-main); background: rgba(128,128,128,0.1); }

/* CLASSI PULITE PER LA SIDEBAR (Nessun centraggio sballato) */
.sidebar-box { 
    background-color: var(--card-bg); padding: 30px; border-radius: 15px; 
    border: 1px solid var(--border-color); box-shadow: 0 10px 30px rgba(0,0,0,0.05); transition: 0.3s;
}
.sidebar-box h3 { color: var(--neon-glow); margin-bottom: 20px; font-size: 1.4rem; }

.sidebar-feature { 
    display: flex; align-items: flex-start; gap: 15px; padding: 15px 0; 
    border-bottom: 1px solid var(--border-color); text-align: left; 
}
.sidebar-feature:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-feature i { font-size: 1.4rem; color: var(--accent); margin-top: 3px; }
.sidebar-feature strong { display: block; color: var(--text-main); font-size: 1.05rem; margin-bottom: 3px; }
.sidebar-feature p { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

/* CHAT FRAME (Per il telefono) */
.chat-frame { border: 10px solid var(--card-bg); border-radius: 25px; overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.2); max-width: 320px; margin: 0 auto; transition: 0.3s; }
.chat-img { width: 100%; display: block; }

/* FEATURES GRID INFERIORE (Centrate) */
.features-section h2 { text-align: center; margin-bottom: 50px; color: var(--text-main); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.feature-item { background: var(--card-bg); padding: 30px; border-radius: 12px; text-align: center; border: 1px solid var(--border-color); transition: 0.3s; }
.feature-item i { font-size: 2.5rem; color: var(--neon-glow); margin-bottom: 20px; }
.feature-item h4 { margin-bottom: 10px; color: var(--text-main); }
.feature-item p { font-size: 0.9rem; color: var(--text-muted); margin: 0; }

/* =========================================
   FOOTER, LINGUA E MEDIA QUERIES
   ========================================= */
footer { padding: 40px 20px; border-top: 1px solid var(--border-color); color: var(--text-muted); background-color: var(--bg-dark); transition: 0.3s; }
.footer-content { display: flex; flex-direction: column; align-items: center; gap: 20px; max-width: 1200px; margin: 0 auto; }
.social-links { display: flex; gap: 30px; }
.social-links a { color: var(--text-muted); font-size: 1.8rem; transition: 0.3s; text-decoration: none; }
.social-links a:hover { color: var(--neon-glow); transform: translateY(-5px); }

.lang-toggle-container { display: flex; align-items: center; gap: 8px; margin-left: 10px; }
.lang-label { font-size: 0.8rem; font-weight: 800; color: var(--text-muted); }
.switch { position: relative; display: inline-block; width: 44px; height: 22px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--border-color); transition: .4s; border: 1px solid var(--text-muted); border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 14px; width: 14px; left: 3px; bottom: 3px; background-color: var(--accent); transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: var(--card-bg); border-color: var(--neon-glow); }
input:checked + .slider:before { transform: translateX(22px); background-color: var(--neon-glow); box-shadow: 0 0 10px var(--neon-glow); }

.lang-en { display: none; }
body.english-mode .lang-it { display: none; }
body.english-mode span.lang-en { display: inline; }
body.english-mode img.lang-en { display: block; }

@media (max-width: 900px) {
    .grid-container { grid-template-columns: repeat(2, 1fr); }
    header { padding: 20px; }
    .project-grid { gap: 40px; }
}

@media (max-width: 768px) {
    .menu-btn { display: block; }
    .nav-menu { position: fixed; top: 75px; right: -100%; width: 100%; height: calc(100vh - 75px); background-color: var(--bg-dark); flex-direction: column; justify-content: flex-start; padding: 40px 20px; transition: transform 0.4s ease-in-out; z-index: 999; border-top: 1px solid var(--border-color); }
    .nav-menu.active { transform: translateX(0); right: 0; }
    .nav-menu a { font-size: 1.2rem; }
    .lang-toggle-container { margin: 20px 0 0 0; justify-content: center; }
    .grid-container { grid-template-columns: 1fr; }
    .intro { margin-top: 40px; text-align: center; }
    .project-title-container { flex-direction: column; text-align: center; gap: 15px; margin-bottom: 40px; }
    .project-grid { grid-template-columns: 1fr; gap: 40px; }
    .project-info h1, .project-info h2, .project-info p { text-align: center; }
    .tech-stack h3 { text-align: center; }
    .tech-stack ul { justify-content: center; } 
    .project-buttons { flex-direction: column; gap: 15px; width: 100%; }
    .btn-neon, .btn-outline { width: 100%; justify-content: center; }
}