/**
 * Reset CSS, Stili Globali e Layout Base
 *
 * @package SistemiPerDormire
 */

/* ----------------------------------------------------
   MODERN CSS RESET
   ---------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd {
    margin: 0;
    padding: 0;
}

ul, ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--color-bg-pure);
    color: var(--color-text-dark);
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.7; /* Sprint 16.1 Refinement */
    letter-spacing: -0.011em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

/* Accessibility screen readers */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.skip-link:focus {
    background-color: var(--color-bg-soft);
    color: var(--color-primary);
    clip: auto !important;
    clip-path: none;
    height: auto;
    width: auto;
    padding: 1rem 2rem;
    position: absolute;
    left: 1rem;
    top: 1rem;
    z-index: 100000;
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-cloud-medium);
}

/* ----------------------------------------------------
   TYPOGRAPHY
   ---------------------------------------------------- */
h1, h2, h3, h4, h5, h6, .text-display {
    font-family: var(--font-heading);
    color: var(--color-primary);
    font-weight: 600;
    line-height: 1.2; /* Sprint 16.1 Refinement */
    letter-spacing: -0.02em;
}

h1, .text-xxl { font-size: var(--text-h1); }
h2, .text-xl { font-size: var(--text-h2); }
h3, .text-lg { font-size: var(--text-h3); }
h4, .text-md { font-size: var(--text-h4); }

.text-display {
    font-size: var(--text-display-l);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.text-lead {
    font-size: var(--text-md);
    color: var(--color-text-muted);
    font-weight: 300;
    line-height: 1.6;
}

.text-small { font-size: var(--text-sm); }
.text-muted { color: var(--color-text-muted); }
.text-gold { color: var(--color-accent-gold); }
.text-white { color: var(--color-white); }
.text-uppercase { text-transform: uppercase; }
.tracking-wide { letter-spacing: 0.1em; }
.text-center { text-align: center; }

/* ----------------------------------------------------
   LAYOUT & CONTAINER
   ---------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* Paddings & Margins */
.py-section {
    padding-top: var(--space-xxl);
    padding-bottom: var(--space-xxl);
}
@media (min-width: 992px) {
    .py-section {
        padding-top: var(--space-xxxl); /* Sprint 16.1 Spacing Refinement */
        padding-bottom: var(--space-xxxl);
    }
}

/* Smooth Gradient Junctions (Sprint 16.1 Transition Engine) */
.py-section.bg-soft {
    background: linear-gradient(to bottom, var(--color-bg-pure) 0%, var(--color-bg-soft) 12%, var(--color-bg-soft) 88%, var(--color-bg-pure) 100%);
}
.py-section.bg-cloud {
    background: linear-gradient(to bottom, var(--color-bg-pure) 0%, var(--color-bg-cloud) 12%, var(--color-bg-cloud) 88%, var(--color-bg-pure) 100%);
}

.py-large { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.mb-small { margin-bottom: var(--space-xs); }
.mb-medium { margin-bottom: var(--space-sm); }
.mb-large { margin-bottom: var(--space-md); }
.mb-xl { margin-bottom: var(--space-xl); }

/* Flex & Grid Utilities */
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.align-center { align-items: center; }
.gap-medium { gap: var(--space-sm); }
.gap-large { gap: var(--space-md); }
.block { display: block; }

.grid {
    display: grid;
    gap: var(--space-md);
}
@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ----------------------------------------------------
   BOTTONI PREMIUM
   ---------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-pill);
    transition: var(--transition-smooth);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}
.btn-primary:hover {
    background-color: var(--color-accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(197, 168, 128, 0.2);
}

.btn-secondary {
    background-color: var(--color-bg-soft);
    color: var(--color-primary);
    border-color: var(--color-border-light);
}
.btn-secondary:hover {
    background-color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-cloud-medium);
}

.btn-gold {
    background-color: var(--color-accent-gold);
    color: var(--color-white);
}
.btn-gold:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(10, 17, 40, 0.1);
}

/* ----------------------------------------------------
   SITE HEADER & NAVIGATION
   ---------------------------------------------------- */
/* Accessibilità focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 3px;
}

.site-header {
    background-color: var(--color-header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border-light);
    transition: var(--transition-smooth);
    padding-top: 1rem;
    padding-bottom: 1rem;
}

/* Stato scrollato dello sticky header */
.site-header.is-scrolled {
    background-color: var(--color-header-bg-scrolled);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    box-shadow: var(--shadow-cloud-medium);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-branding {
    display: flex;
    flex-direction: column;
}
.site-branding img,
.custom-logo,
.custom-logo-link img {
    height: auto;
    max-height: 50px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    display: block;
}
.site-title {
    font-size: var(--text-md);
    font-weight: 700;
    margin: 0;
}
@media (min-width: 768px) {
    .site-title {
        font-size: var(--text-lg);
    }
}
.site-description {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* Menu desktop navigation */
.primary-menu-container ul {
    display: flex;
    gap: var(--space-md);
}
.primary-menu-container a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-dark);
    padding: 0.5rem 0;
    position: relative;
    display: inline-block;
}
.primary-menu-container a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent-gold);
    transition: var(--transition-smooth);
}
.primary-menu-container a:hover::after,
.primary-menu-container .current-menu-item > a::after {
    width: 100%;
}
.primary-menu-container a:hover {
    color: var(--color-accent-gold);
}

/* Submenus */
.primary-menu-container ul li {
    position: relative;
}
.primary-menu-container ul ul {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-white);
    box-shadow: var(--shadow-cloud-medium);
    border-radius: var(--radius-medium);
    padding: 1rem;
    display: none;
    flex-direction: column;
    min-width: 200px;
    gap: 0.5rem;
    border: 1px solid var(--color-border-light);
}
.primary-menu-container ul li:hover > ul {
    display: flex;
}

/* Gruppo Azioni Header Destra */
.header-right-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md); /* Aumentato gap per allineamento */
}

/* Numero Verde Desktop */
.btn-phone-desktop {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-dark);
    background-color: transparent;
    padding: 0.5rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    transition: var(--transition-smooth);
}
@media (min-width: 992px) {
    .btn-phone-desktop {
        font-size: var(--text-sm);
        padding: 0.6rem 0.8rem;
    }
}
.btn-phone-desktop .phone-icon-svg {
    stroke: var(--color-accent-gold-dark);
    transition: var(--transition-smooth);
}
.btn-phone-desktop:hover {
    color: var(--color-accent-gold-dark);
}
.btn-phone-desktop:hover .phone-icon-svg {
    stroke: var(--color-accent-gold);
}

/* CTA Parla con un consulente */
.btn-header-consultant {
    display: none;
    align-items: center;
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-white);
    background-color: var(--color-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-primary);
    transition: var(--transition-smooth);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
@media (min-width: 992px) {
    .btn-header-consultant {
        display: inline-flex;
        font-size: 11px;
        padding: 0.6rem 1.25rem;
    }
}
.btn-header-consultant:hover {
    background-color: var(--color-accent-gold-dark);
    border-color: var(--color-accent-gold-dark);
    color: var(--color-white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-s);
}

/* Numero Verde Mobile (Solo Icona) */
.btn-phone-mobile {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-pill);
    background-color: var(--color-bg-soft);
    border: 1px solid var(--color-border-light);
    color: var(--color-primary);
    transition: var(--transition-smooth);
}
.btn-phone-mobile .phone-icon-svg {
    stroke: var(--color-accent-gold-dark);
}
.btn-phone-mobile:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}
.btn-phone-mobile:hover .phone-icon-svg {
    stroke: var(--color-accent-gold);
}

.mobile-menu-extra {
    display: none;
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border-light);
}

/* Menu Mobile Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .primary-menu-container {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-white);
        border-bottom: 1px solid var(--color-border-light);
        padding: 1.5rem var(--container-padding);
        box-shadow: var(--shadow-cloud-medium);
        max-height: calc(100vh - 100px);
        overflow-y: auto;
    }
    .primary-menu-container.is-active {
        display: block;
    }
    .primary-menu-container ul {
        flex-direction: column;
        gap: 1rem;
    }
    .primary-menu-container ul ul {
        position: static;
        box-shadow: none;
        padding-left: 1rem;
        display: block;
        transform: none;
        border: none;
        padding-top: 0.5rem;
    }
    .menu-toggle {
        display: block;
    }
    .btn-phone-desktop {
        display: none;
    }
    .btn-phone-mobile {
        display: flex;
    }
    .mobile-menu-extra {
        display: block;
    }
    .btn-phone-mobile-menu {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-weight: 600;
        color: var(--color-primary);
        padding: 0.5rem 0;
    }
    .btn-phone-mobile-menu .phone-icon-svg {
        stroke: var(--color-accent-gold-dark);
    }
    .btn-phone-mobile-menu .phone-num {
        color: var(--color-accent-gold-dark);
    }
}

/* Hamburger Icon animation helper */
.hamburger-box {
    width: 24px;
    height: 18px;
    display: inline-block;
    position: relative;
}
.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    position: absolute;
    transition: var(--transition-fast);
}
.hamburger-inner {
    top: 50%;
    transform: translateY(-50%);
}
.hamburger-inner::before {
    content: '';
    top: -6px;
}
.hamburger-inner::after {
    content: '';
    bottom: -6px;
}
.menu-toggle[aria-expanded="true"] .hamburger-inner {
    background-color: transparent;
}
.menu-toggle[aria-expanded="true"] .hamburger-inner::before {
    transform: rotate(45deg);
    top: 0;
}
.menu-toggle[aria-expanded="true"] .hamburger-inner::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* ----------------------------------------------------
   SITE FOOTER
   ---------------------------------------------------- */
.bg-elegant {
    background-color: var(--color-primary);
}
.border-top {
    border-top: 1px solid;
}
.border-muted {
    border-color: rgba(255, 255, 255, 0.1);
}

.footer-widgets {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
}
@media (min-width: 768px) {
    .footer-widgets {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-links-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.footer-links-list a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
}
.footer-links-list a:hover {
    color: var(--color-accent-gold);
    padding-left: 4px;
}

.footer-privacy-list a {
    color: rgba(255, 255, 255, 0.5);
}
.footer-privacy-list a:hover {
    color: var(--color-accent-gold);
}

/* ----------------------------------------------------
   MICRO-ANIMATIONS & INTERSECTION OBSERVER STATES
   ---------------------------------------------------- */
.anim-prepare {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-smooth);
    will-change: transform, opacity;
}

.anim-prepare.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Ritardi per animazioni staggered */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* Animazione di dissolvenza dal basso */
.animate-fade-up.anim-prepare {
    transform: translateY(30px);
}
.animate-fade-up.anim-prepare.is-visible {
    transform: translateY(0);
}

/* Blocco scorrimento body per menu mobile */
body.menu-mobile-open {
    overflow: hidden;
}

/* ----------------------------------------------------
   DIVISORI ONDA E ELEMENTI DI TRANSIZIONE
   ---------------------------------------------------- */
.footer-wave-divider {
    width: 100%;
    line-height: 0;
    position: relative;
    margin-top: var(--space-xxl);
    background-color: transparent;
}
.footer-wave-divider svg {
    position: relative;
    display: block;
    width: 100%;
    height: 60px;
}
@media (min-width: 768px) {
    .footer-wave-divider svg {
        height: 100px;
    }
}

/* Stili Footer Avanzati */
.footer-brand-desc {
    max-width: 320px;
}
.footer-tollfree {
    font-family: var(--font-heading);
    font-weight: 700;
    transition: var(--transition-fast);
    text-decoration: none;
}
.footer-tollfree:hover {
    color: var(--color-white);
}
.footer-social-icons .social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-pill);
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-white);
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-social-icons .social-link:hover {
    background-color: var(--color-accent-gold);
    border-color: var(--color-accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(197, 168, 128, 0.3);
}
.footer-legal-piva {
    gap: 1rem;
}
.footer-legal-piva span {
    display: inline-block;
}
.hover-underline:hover {
    text-decoration: underline;
    color: var(--color-accent-gold);
}

/* ----------------------------------------------------
   ELEMENTI FORM DI CONTATTO E INPUT BASE
   ---------------------------------------------------- */
input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
    width: 100%;
    padding: 0.875rem 1.25rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    color: var(--color-text-dark);
    background-color: var(--color-bg-pure);
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-medium);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-cloud-subtle);
}
input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent-gold);
    background-color: var(--color-bg-soft);
    box-shadow: 0 0 0 3px rgba(197, 168, 128, 0.15);
}

label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group {
    margin-bottom: var(--space-sm);
}

.form-checkbox-label {
    display: inline-flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: var(--text-xs);
    text-transform: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-weight: 400;
}
.form-checkbox-label input[type="checkbox"] {
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--color-accent-gold);
}

/* ----------------------------------------------------
   DESIGN SYSTEM UTILITIES & TOKENS (Sprint 14)
   ---------------------------------------------------- */

/* 1. TYPOGRAPHY SCALE CLASSES */
.display-xl {
    font-family: var(--font-heading);
    font-size: var(--text-display-xl);
    line-height: 1.1;
    color: var(--color-primary);
}
.display-l {
    font-family: var(--font-heading);
    font-size: var(--text-display-l);
    line-height: 1.15;
    color: var(--color-primary);
}
.h1 {
    font-family: var(--font-heading);
    font-size: var(--text-h1);
    line-height: 1.15;
    color: var(--color-primary);
}
.h2 {
    font-family: var(--font-heading);
    font-size: var(--text-h2);
    line-height: 1.2;
    color: var(--color-primary);
}
.h3 {
    font-family: var(--font-heading);
    font-size: var(--text-h3);
    line-height: 1.25;
    color: var(--color-primary);
}
.h4 {
    font-family: var(--font-heading);
    font-size: var(--text-h4);
    line-height: 1.3;
    color: var(--color-primary);
}
.lead {
    font-size: var(--text-lead);
    line-height: 1.6;
    color: var(--color-text-muted);
}
.body {
    font-size: var(--text-body);
    line-height: 1.6;
    color: var(--color-text-dark);
}
.small {
    font-size: var(--text-small);
    line-height: 1.5;
    color: var(--color-text-muted);
}
.caption {
    font-size: var(--text-caption);
    line-height: 1.4;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.quote {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: var(--text-md);
    line-height: 1.5;
    color: var(--color-primary-light);
    border-left: 3px solid var(--color-accent-gold);
    padding-left: var(--space-m);
}

/* 2. SPACING SCALE TOKENS */
/* Padding helpers */
.p-xs { padding: var(--space-xs); }
.p-s  { padding: var(--space-s); }
.p-m  { padding: var(--space-m); }
.p-l  { padding: var(--space-l); }
.p-xl { padding: var(--space-xl); }
.p-xxl { padding: var(--space-xxl); }
.p-xxxl { padding: var(--space-xxxl); }

.py-xs { padding-top: var(--space-xs); padding-bottom: var(--space-xs); }
.py-s  { padding-top: var(--space-s); padding-bottom: var(--space-s); }
.py-m  { padding-top: var(--space-m); padding-bottom: var(--space-m); }
.py-l  { padding-top: var(--space-l); padding-bottom: var(--space-l); }
.py-xl { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.py-xxl { padding-top: var(--space-xxl); padding-bottom: var(--space-xxl); }
.py-xxxl { padding-top: var(--space-xxxl); padding-bottom: var(--space-xxxl); }

.px-xs { padding-left: var(--space-xs); padding-right: var(--space-xs); }
.px-s  { padding-left: var(--space-s); padding-right: var(--space-s); }
.px-m  { padding-left: var(--space-m); padding-right: var(--space-m); }
.px-l  { padding-left: var(--space-l); padding-right: var(--space-l); }
.px-xl { padding-left: var(--space-xl); padding-right: var(--space-xl); }
.px-xxl { padding-left: var(--space-xxl); padding-right: var(--space-xxl); }
.px-xxxl { padding-left: var(--space-xxxl); padding-right: var(--space-xxxl); }

/* Margin helpers */
.m-xs { margin: var(--space-xs); }
.m-s  { margin: var(--space-s); }
.m-m  { margin: var(--space-m); }
.m-l  { margin: var(--space-l); }
.m-xl { margin: var(--space-xl); }
.m-xxl { margin: var(--space-xxl); }
.m-xxxl { margin: var(--space-xxxl); }

.my-xs { margin-top: var(--space-xs); margin-bottom: var(--space-xs); }
.my-s  { margin-top: var(--space-s); margin-bottom: var(--space-s); }
.my-m  { margin-top: var(--space-m); margin-bottom: var(--space-m); }
.my-l  { margin-top: var(--space-l); margin-bottom: var(--space-l); }
.my-xl { margin-top: var(--space-xl); margin-bottom: var(--space-xl); }
.my-xxl { margin-top: var(--space-xxl); margin-bottom: var(--space-xxl); }
.my-xxxl { margin-top: var(--space-xxxl); margin-bottom: var(--space-xxxl); }

.mt-xs { margin-top: var(--space-xs); }
.mt-s  { margin-top: var(--space-s); }
.mt-m  { margin-top: var(--space-m); }
.mt-l  { margin-top: var(--space-l); }
.mt-xl { margin-top: var(--space-xl); }
.mt-xxl { margin-top: var(--space-xxl); }
.mt-xxxl { margin-top: var(--space-xxxl); }

.mb-xs { margin-bottom: var(--space-xs); }
.mb-s  { margin-bottom: var(--space-s); }
.mb-m  { margin-bottom: var(--space-m); }
.mb-l  { margin-bottom: var(--space-l); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-xxl { margin-bottom: var(--space-xxl); }
.mb-xxxl { margin-bottom: var(--space-xxxl); }

/* 3. COLOR CLASSES */
.text-color-dark { color: var(--color-text-dark); }
.text-color-muted { color: var(--color-text-muted); }
.text-color-primary { color: var(--color-primary); }
.text-color-gold { color: var(--color-accent-gold); }
.text-color-white { color: var(--color-white); }

.bg-color-pure { background-color: var(--color-bg-pure); }
.bg-color-soft { background-color: var(--color-bg-soft); }
.bg-color-cloud { background-color: var(--color-bg-cloud); }
.bg-color-elegant { background-color: var(--color-primary); }
.bg-color-gold { background-color: var(--color-accent-gold); }

/* 4. BORDER RADIUS CLASSES */
.radius-s { border-radius: var(--radius-small); }
.radius-m { border-radius: var(--radius-medium); }
.radius-l { border-radius: var(--radius-large); }
.radius-xl { border-radius: var(--radius-xl); }
.radius-pill { border-radius: var(--radius-pill); }

/* 5. SHADOW CLASSES */
.shadow-xs { box-shadow: var(--shadow-xs); }
.shadow-s { box-shadow: var(--shadow-s); }
.shadow-m { box-shadow: var(--shadow-m); }
.shadow-l { box-shadow: var(--shadow-l); }
.shadow-cloud { box-shadow: var(--shadow-cloud); }

/* 6. ANIMATION HELPER CLASSES */
.anim-fade {
    opacity: 0;
    transition: opacity var(--anim-duration-medium) var(--anim-easing);
}
.anim-fade.is-visible {
    opacity: 1;
}
.anim-fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--anim-duration-medium) var(--anim-easing), transform var(--anim-duration-medium) var(--anim-easing);
}
.anim-fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}
.anim-scale {
    transform: scale(0.95);
    opacity: 0;
    transition: opacity var(--anim-duration-medium) var(--anim-easing), transform var(--anim-duration-medium) var(--anim-easing);
}
.anim-scale.is-visible {
    opacity: 1;
    transform: scale(1);
}
.anim-float {
    animation: floatElement 6s infinite ease-in-out alternate;
}
@keyframes floatElement {
    0% { transform: translateY(0); }
    100% { transform: translateY(-8px); }
}

/* 7. FORM FIELDS VALIDATION & STATES */
.form-input.is-error,
input.is-error,
textarea.is-error,
select.is-error {
    border-color: var(--color-error) !important;
    box-shadow: 0 0 0 3px rgba(217, 79, 79, 0.15) !important;
}
.form-input.is-success,
input.is-success,
textarea.is-success,
select.is-success {
    border-color: var(--color-success) !important;
    box-shadow: 0 0 0 3px rgba(46, 139, 87, 0.15) !important;
}
.form-validation-msg {
    font-size: var(--text-caption);
    margin-top: var(--space-xs);
    font-weight: 500;
}
.form-validation-msg.error-msg {
    color: var(--color-error);
}
.form-validation-msg.success-msg {
    color: var(--color-success);
}

/* 8. GRID & SURFACE RULES (Sprint 15) */
.text-reading-width {
    max-width: 65ch;
    margin-left: auto;
    margin-right: auto;
}

/* 9. IMAGE ASPECT RATIOS (CLS Prevention) */
.aspect-hero {
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
@media (min-width: 992px) {
    .aspect-hero {
        aspect-ratio: 21 / 9;
    }
}
.aspect-product {
    aspect-ratio: 1 / 1;
    object-fit: cover;
}
.aspect-magazine {
    aspect-ratio: 16 / 10;
    object-fit: cover;
}
.aspect-square {
    aspect-ratio: 1 / 1;
    object-fit: cover;
}
.aspect-landscape {
    aspect-ratio: 3 / 2;
    object-fit: cover;
}

/* 10. ICON SYSTEM RULES */
.icon-svg {
    width: 24px;
    height: 24px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5; /* Spessore linea sottile premium */
    stroke-linecap: round;
    stroke-linejoin: round;
    display: inline-block;
    vertical-align: middle;
}
.icon-svg-large {
    width: 48px;
    height: 48px;
    stroke-width: 1.2; /* Riduzione spessore per icone grandi */
}