:root {
    /* Brand Colors derivati dal Logo */
    --bs-teal: #20c997; 
    --brand-teal: #20c997;
    --brand-teal-hover: #1aa179;
    
    /* Dark Theme "Slate" Palette (Meno duro del nero puro) */
    --bg-body: #1e2226;      /* Sfondo principale */
    --bg-darker: #17191c;    /* Sezioni alternate / Footer */
    --bg-card: #252a30;      /* Card */
    --text-main: #e9ecef;
    --text-muted: #adb5bd;
}

body {
    background-color: var(--bg-body);
    
    /* FIX LEGGIBILITÀ:
       Il gradiente (rgba) viene renderizzato SOPRA l'immagine.
       0.97 è l'opacità del nero (molto alta per coprire il bianco dell'immagine).
    */
    background-image: 
        linear-gradient(rgba(23, 25, 28, 0.87), rgba(23, 25, 28, 0.98)),
        url('../img/background.png');
        
    background-repeat: repeat;
    background-size: auto, 400px; /* auto per il gradiente, 400px per l'immagine */
    background-attachment: fixed; /* L'immagine sta ferma mentre scrolli (effetto premium) */
    
    color: var(--text-main);
    font-family: 'Segoe UI', Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Typography & Utility */
.text-teal { color: var(--brand-teal) !important; }
.bg-teal-subtle { background-color: rgba(32, 201, 151, 0.15) !important; }
.bg-darker { background-color: var(--bg-darker); }
.bg-card { background-color: var(--bg-card); }

/* Navbar Glass Effect */
.glass-nav {
    background: rgba(30, 34, 38, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Buttons Custom */
.btn-teal {
    background-color: var(--brand-teal);
    border-color: var(--brand-teal);
    color: #000;
    font-weight: 600;
    transition: all 0.3s ease;
}
.btn-teal:hover {
    background-color: var(--brand-teal-hover);
    border-color: var(--brand-teal-hover);
    transform: translateY(-2px);
}

.btn-outline-teal {
    color: var(--brand-teal);
    border-color: var(--brand-teal);
}
.btn-outline-teal:hover {
    background-color: var(--brand-teal);
    color: #000;
}

/* Hero Section */
.hero-section {
    padding: 160px 0 100px 0;
    background: radial-gradient(circle at top right, rgba(32, 201, 151, 0.08), transparent 40%);
}

/* Cards Hover Effect */
.hover-up {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.hover-up:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2) !important;
}

.icon-box {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

/* Footer Link Hover */
.hover-teal:hover {
    color: var(--brand-teal) !important;
    transition: color 0.2s ease;
}

.metryka-icon-glow {
    width: 120px;
    height: auto;
    /* Ombra colorata per far risaltare l'icona sul fondo scuro */
    filter: drop-shadow(0 0 15px rgba(32, 201, 151, 0.4));
    transition: all 0.3s ease;
}

.metryka-icon-glow:hover {
    /* Effetto hover più intenso */
    filter: drop-shadow(0 0 25px rgba(32, 201, 151, 0.7));
    transform: scale(1.05);
}

/* --- AGGIUNTE per Case Studies --- */
.ls-2 {
    letter-spacing: 2px;
}

/* Override sottile per le righe delle tabelle dark */
.table-dark {
    --bs-table-bg: transparent;
    --bs-table-hover-bg: rgba(32, 201, 151, 0.05); /* Hover Teal leggerissimo */
}

.table-dark th {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
}
.table-dark td {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}