/* ============================================================
    RGANDJA NEURAL ENGINE - OFFICIAL DESIGN SYSTEM 2026
    Architect: Andrew Di Censo
    Version: 5.2.5 - Stable Deployment
   ============================================================ */

:root {
    /* Palette Core */
    --primary: #0f172a; 
    --accent: #10b981;         /* Tech Green */
    --accent-gold: #d4af37;    /* RGandja Premium Gold */
    --accent-gold-light: #f2d472;
    
    /* Superfici e Testi */
    --bg-app: #020617; 
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass: rgba(15, 23, 42, 0.7);
    --border: rgba(255, 255, 255, 0.08);
    
    /* Elevazione & Moto */
    --shadow-premium: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    --transition-smooth: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* 1. RESET & FONDAMENTALI */
* {
    margin: 0; padding: 0; box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-app);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

/* 2. HEADER & NAVIGATION */
.header {
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 85px;
    display: flex;
    align-items: center;
}

.header-inner {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 42px; filter: drop-shadow(0 0 8px rgba(212, 175, 55, 0.3)); }

.main-nav a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 30px;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: var(--transition-smooth);
}

.main-nav a:hover, .main-nav a.active-nav { color: var(--accent-gold); }

/* 3. SISTEMA DI LAYOUT */
.container { max-width: 1300px; margin: 0 auto; padding: 0 30px; }
.section { padding: 120px 0; }
.text-center { text-align: center; }
.text-gold { color: var(--accent-gold); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }

/* 4. COMPONENTI PREMIUM & EVIDENZIAZIONE CARD */
.hero-premium {
    padding: 160px 0 100px;
    background: radial-gradient(circle at 50% 0%, #1e293b 0%, var(--bg-app) 80%);
}

.hero-premium h1 {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 30px;
    background: linear-gradient(to bottom, #ffffff 30%, #64748b 100%);
    -webkit-background-clip: text;
    background-clip: text; 
    -webkit-text-fill-color: transparent;
    letter-spacing: -2px;
}

.badge-status {
    background: rgba(16, 185, 129, 0.05);
    color: var(--accent);
    padding: 8px 22px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 800;
    border: 1px solid rgba(16, 185, 129, 0.2);
    display: inline-block;
    margin-bottom: 35px;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.card-expert {
    background: var(--glass);
    border: 1px solid var(--border);
    padding: 60px 45px;
    border-radius: 12px;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.card-expert:hover {
    border-color: var(--accent-gold);
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.6);
}

/* LOGICA DI EVIDENZIAZIONE DINAMICA PER LA DEMO */
.highlight-glow { 
    animation: glow-premium 2s infinite alternate ease-in-out; 
    border-color: var(--accent-gold) !important;
}

.featured-card { 
    border: 2px solid var(--accent-gold) !important; 
    transform: translateY(-15px);
    box-shadow: 0 20px 50px rgba(212, 175, 55, 0.3);
    background: rgba(15, 23, 42, 0.95) !important;
}

@keyframes glow-premium { 
    from { box-shadow: 0 0 15px rgba(212, 175, 55, 0.1); } 
    to { box-shadow: 0 0 40px rgba(212, 175, 55, 0.45); } 
}

/* 5. TERMINALE & FORM */
.terminal {
    background: #050810;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-premium);
    overflow: hidden;
}

input, select, textarea {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border);
    color: #fff;
    padding: 16px;
    border-radius: 4px;
    width: 100%;
    font-family: inherit;
}

input:focus { border-color: var(--accent-gold); outline: none; background: rgba(15, 23, 42, 0.8); }

/* 6. BOTTONI */
.btn {
    padding: 20px 40px;
    border-radius: 4px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition-smooth);
    display: inline-block;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.8rem;
}

.btn-gold {
    background: var(--accent-gold);
    color: #000;
}

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(212, 175, 55, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: #fff;
}

.btn-outline:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

/* 7. FOOTER */
.footer {
    padding: 100px 0 60px;
    background: #010307;
    border-top: 1px solid var(--border);
}

/* 8. MEDIA QUERIES */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .hero-premium h1 { font-size: 3.5rem; }
}

@media (max-width: 768px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .main-nav { display: none; }
    .section { padding: 80px 0; }
    .hero-premium h1 { font-size: 2.5rem; }
}