/**
 * Layout
 * Header, Footer, Navigation, and Grid systems
 */

/* ==================== Header ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: transform 0.4s ease, background-color var(--transition-base), box-shadow var(--transition-base);
}

.header--hidden {
    transform: translateY(-100%);
}

.header--scrolled {
    box-shadow: var(--shadow-md);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.header__logo {
    display: flex;
    align-items: center;
}

.logo__text {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.logo__image {
    height: 110px;
    width: auto;
}

.header__nav {
    display: none;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 100%;
}

.header__email {
    display: none;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.header__email:hover {
    color: var(--color-primary);
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
}

.menu-toggle__bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__menu-toggle--active .menu-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.header__menu-toggle--active .menu-toggle__bar:nth-child(2) {
    opacity: 0;
}

.header__menu-toggle--active .menu-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==================== Footer ==================== */
.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding-top: var(--spacing-4xl);
}

.footer__content {
    display: grid;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--color-gray-700);
}

.footer__brand .logo__text {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer__brand .logo__image {
    height: 50px;
    width: auto;
    margin-bottom: var(--spacing-sm);
}

.footer__tagline {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.footer__nav-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
}

.footer__nav-list li {
    margin-bottom: var(--spacing-sm);
}

.footer__nav-list a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer__nav-list a:hover {
    color: var(--color-white);
}

.footer__address {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.footer__address p {
    margin-bottom: var(--spacing-xs);
}

.footer__address a {
    color: var(--color-gray-400);
}

.footer__address a:hover {
    color: var(--color-white);
}

.footer__bottom {
    padding-block: var(--spacing-lg);
}

.footer__copyright {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    text-align: center;
}

/* ==================== Hero Section ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    /* Performance: CSS containment and GPU layer promotion */
    contain: layout paint;
    will-change: transform;
}

.hero__background {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    z-index: 0;
    /* Performance: GPU acceleration */
    will-change: transform, opacity;
    transform: translateZ(0);
}

.hero__content {
    text-align: center;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

/* Logo watermark in hero background */
.hero__logo-watermark {
    position: absolute;
    top: 50px;
    left: 50px;
    width: min(22vw, 180px);
    height: auto;
    opacity: 0.95;
    z-index: 1;
    pointer-events: none;
}

.hero__title {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(2.4rem, 8vw, 5.4rem);
    font-weight: 700;
    color: #e6e6e6;
    margin-bottom: var(--spacing-xl);
    line-height: 1;
    letter-spacing: 0.1em;
    text-shadow:
        /* Glow verde e blu */
        0 0 10px rgba(82, 151, 32, 0.5),
        0 0 20px rgba(82, 151, 32, 0.3),
        0 0 40px rgba(82, 151, 32, 0.2),
        0 0 15px rgba(0, 100, 180, 0.4),
        0 0 30px rgba(0, 100, 180, 0.25),
        /* Profondità */
        0 2px 4px rgba(0, 0, 0, 0.3),
        0 4px 8px rgba(0, 0, 0, 0.2);
}

.hero__title--highlight {
    color: rgba(255, 255, 255, 0.85);
}

.hero__title-line {
    display: block;
    font-variant: small-caps;
    text-transform: lowercase;
}

/* ==================== Page Hero ==================== */
.page-hero {
    position: relative;
    padding-top: calc(var(--header-height) + var(--spacing-4xl));
    padding-bottom: var(--spacing-4xl);
    text-align: center;
    overflow: hidden;
    /* Performance: CSS containment and GPU layer promotion */
    contain: layout paint;
    will-change: transform;
}

.page-hero__background {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: linear-gradient(135deg, #001a33 0%, #003366 40%, #002244 70%, #001122 100%);
    /* Performance: GPU acceleration */
    will-change: transform, opacity;
    transform: translateZ(0);
}

.page-hero__background::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 100% 60% at 20% 50%, rgba(82,151,32,0.5) 0%, transparent 50%),
        radial-gradient(ellipse 80% 50% at 75% 30%, rgba(82,151,32,0.35) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 50% 70%, rgba(100,180,50,0.25) 0%, transparent 50%),
        radial-gradient(ellipse 70% 45% at 30% 20%, rgba(0,51,102,0.6) 0%, transparent 50%),
        radial-gradient(ellipse 50% 35% at 80% 60%, rgba(0,80,140,0.4) 0%, transparent 50%);
    animation: achoiceAurora 12s ease-in-out infinite;
}

@keyframes achoiceAurora {
    0%, 100% { opacity: 0.8; transform: scale(1) translateY(0); }
    33% { opacity: 1; transform: scale(1.05) translateY(-15px); }
    66% { opacity: 0.85; transform: scale(0.98) translateY(10px); }
}

.page-hero__title {
    position: relative;
    z-index: 2;
    font-size: var(--font-size-4xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    text-shadow:
        /* Glow verde e blu */
        0 0 10px rgba(82, 151, 32, 0.5),
        0 0 20px rgba(82, 151, 32, 0.3),
        0 0 40px rgba(82, 151, 32, 0.2),
        0 0 15px rgba(0, 100, 180, 0.4),
        0 0 30px rgba(0, 100, 180, 0.25),
        /* Profondità */
        0 2px 4px rgba(0, 0, 0, 0.3),
        0 4px 8px rgba(0, 0, 0, 0.2);
}

.page-hero__subtitle {
    position: relative;
    z-index: 2;
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.85);
}

.page-hero .container {
    position: relative;
    z-index: 2;
}

/* ==================== Grids ==================== */
.services-intro__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.values__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.stats__grid {
    display: grid;
    gap: var(--spacing-lg);
}

.expertise__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.approach__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.services-main__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.solutions__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.dc-features__grid {
    display: grid;
    gap: var(--spacing-xl);
}

.dc-specs__grid {
    display: grid;
    gap: var(--spacing-lg);
}

.contact-section__grid {
    display: grid;
    gap: var(--spacing-3xl);
}

.dc-services__grid {
    display: grid;
    gap: var(--spacing-xl);
}

/* ==================== Responsive Breakpoints ==================== */
@media (min-width: 640px) {
    .hero__title {
        font-size: clamp(3rem, 7vw, 4.8rem);
    }

    .page-hero__title {
        font-size: var(--font-size-5xl);
    }

    .services-intro__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .values__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .stats__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .expertise__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .approach__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-main__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solutions__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .dc-features__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .dc-specs__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .dc-services__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer__content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .hero__title {
        font-size: clamp(3.6rem, 8vw, 6rem);
    }

    .contact-section__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .header__menu-toggle {
        display: none;
    }

    .header__nav {
        display: block;
    }

    .header__email {
        display: block;
    }

    .services-intro__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .expertise__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .services-main__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .dc-features__grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .footer__content {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

/* ==================== Mobile Navigation ==================== */
@media (max-width: 1023px) {
    .header__nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-white);
        padding: var(--spacing-xl);
        transform: translateX(100%);
        transition: transform var(--transition-base);
    }

    .header__nav--open {
        display: block;
        transform: translateX(0);
    }

    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }

    .nav__link {
        font-size: var(--font-size-lg);
    }
}