:root {
    --nav-dark-text: #ffffff;
    --nav-light-text: #111111;
    --accent-blue: #0d6efd;
    --blur-effect: blur(12px);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #ffffff;
}

/* --- DESIGN NAVBAR INTELLIGENTE --- */
.navbar-custom {
    transition: padding 0.3s ease-in-out, background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    padding: 30px 0;
    background-color: transparent !important;
}

/* Stile applicato dinamicamente via Script allo scroll */
.navbar-custom.scrolled {
    background-color: rgba(255, 255, 255, 0.85) !important;
    padding: 15px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
    backdrop-filter: var(--blur-effect);
    -webkit-backdrop-filter: var(--blur-effect);
}

/* Inversione colori dinamica */
.navbar-custom .navbar-brand,
.navbar-custom .nav-link {
    color: var(--nav-dark-text) !important;
    transition: color 0.2s ease;
}

.navbar-custom.scrolled .navbar-brand,
.navbar-custom.scrolled .nav-link,
.navbar-custom.scrolled .language-select {
    color: var(--nav-light-text) !important;
}

.navbar-custom.scrolled .navbar-toggler-icon {
    filter: invert(1);
}

/* Hover e stati attivi */
.navbar-custom .nav-link:hover,
.navbar-custom .dropdown:hover > .nav-link {
    color: rgba(255, 255, 255, 0.7) !important;
}

.navbar-custom.scrolled .nav-link:hover,
.navbar-custom.scrolled .dropdown:hover > .nav-link {
    color: var(--accent-blue) !important;
}

/* Dropdown eleganti ad effetto dissolvenza */
.navbar-custom .dropdown-menu {
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.06);
    padding: 10px;
    animation: menuFade 0.25s ease-in-out;
}

@keyframes menuFade {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.navbar-custom .dropdown-item {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    color: var(--nav-light-text);
}

.navbar-custom .dropdown-item:hover {
    background-color: var(--accent-blue);
    color: #ffffff;
}

/* Pulsanti dinamici navbar */
.navbar-custom .btn-action {
    background-color: #ffffff;
    color: var(--nav-light-text);
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.navbar-custom.scrolled .btn-action {
    background-color: #111111;
    color: #ffffff;
}

.navbar-custom .btn-action:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* --- COPERTURA HERO VIDEO BG --- */
.hero-wrapper {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.hero-container {
    position: relative;
    z-index: 3;
    color: #ffffff;
}

.hero-title {
    font-weight: 900;
    font-size: calc(2.2rem + 2.8vw);
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    max-width: 720px;
    margin: 0 auto;
}