/* ==========================================================================
   EVE S.r.l. Corporate & Institutional Design System
   ========================================================================== */

:root {
    --ink: #0a110e;
    --navy: #16263d;
    --gold: #b39258;
    --paper: #f4f6f8;
    --muted: #525d6d;
    --line: #d2d8e0;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, sans-serif;
    color: var(--ink);
    background: #fff;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

.wrap {
    width: min(1200px, calc(100% - 48px));
    margin: auto;
}

/* ==========================================================================
   Navigation & Header System
   ========================================================================== */

.institutional-bar {
    background: #060b13;
    color: #8fa2be;
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.inst-info span + span::before {
    content: "|";
    margin: 0 10px;
    color: var(--gold);
}

.site-header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.top {
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.brand-container {
    display: flex;
    flex-direction: column;
}

.brand {
    font-size: 26px;
    font-weight: 900;
    letter-spacing: -1.2px;
    line-height: 1.0;
    color: var(--ink);
}

.brand span {
    color: var(--navy);
}

.brand-subtitle {
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--gold);
    font-weight: 800;
    margin-top: 4px;
}

nav {
    display: flex;
    gap: 32px;
    align-items: center;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

nav a {
    color: var(--navy);
    position: relative;
    padding: 8px 0;
    transition: color 0.2s ease;
}

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

nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gold);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: var(--navy);
    color: #fff;
    border-radius: 4px;
    padding: 14px 22px;
    font-size: 12px;
    letter-spacing: .08em;
    text-transform: uppercase;
    font-weight: 800;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(22, 38, 61, 0.15);
}

.btn:hover {
    background: var(--gold);
    color: var(--ink);
    transform: translateY(-1px);
}

.lang-toggle {
    background: var(--paper);
    border: 1px solid var(--line);
    color: var(--navy);
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 800;
    border-radius: 20px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: .08em;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.lang-toggle:hover {
    border-color: var(--gold);
    color: var(--gold);
    background: #fff;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    position: relative;
    min-height: 650px;
    display: flex;
    align-items: center;
    color: white;
    background: #0d1726;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 90px 0;
    max-width: 740px;
}

.eyebrow {
    font-size: 12px;
    letter-spacing: .25em;
    text-transform: uppercase;
    font-weight: 800;
    color: var(--gold);
    margin-bottom: 14px;
}

h1 {
    font-size: clamp(42px, 6vw, 76px);
    line-height: 1.02;
    letter-spacing: -.045em;
    font-weight: 800;
    margin: 0 0 22px;
}

.hero p {
    max-width: 580px;
    color: #d0d7e2;
    font-size: 17px;
    line-height: 1.75;
    margin: 0 0 34px;
}

.btn.secondary {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.6);
    margin-left: 8px;
    box-shadow: none;
}

.btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

/* ==========================================================================
   Credentials Banner
   ========================================================================== */

.credentials-banner {
    background: var(--navy);
    color: #fff;
    padding: 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cred-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}

.cred-item strong {
    display: block;
    font-size: 18px;
    color: var(--gold);
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.cred-item span {
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #c0c9d6;
}

/* ==========================================================================
   Intro Section & Grid Layouts
   ========================================================================== */

.intro {
    padding: 95px 0 45px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: end;
}

.intro h2 {
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.1;
    letter-spacing: -.035em;
    margin: 12px 0 0;
}

.intro p {
    font-size: 15px;
    line-height: 1.85;
    color: var(--muted);
    margin: 0;
}

.products {
    padding: 20px 0 95px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product {
    border: 1px solid var(--line);
    background: #fff;
    min-width: 0;
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-image {
    height: 240px;
    position: relative;
    overflow: hidden;
    background: #e4eaf2;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product:hover img {
    transform: scale(1.04);
}

.product-image .tag {
    position: absolute;
    left: 16px;
    top: 16px;
    background: #fff;
    padding: 8px 12px;
    font-size: 12px;
    letter-spacing: .12em;
    text-transform: uppercase;
    font-weight: 800;
    color: var(--navy);
    border-radius: 2px;
}

.product-body {
    padding: 28px;
}

.product h3 {
    font-size: 24px;
    letter-spacing: -.03em;
    margin: 0 0 8px;
}

.spec {
    font-size: 12px;
    color: var(--gold);
    font-weight: 800;
    letter-spacing: .08em;
    margin-bottom: 14px;
}

.product p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--muted);
    min-height: 75px;
    margin: 0 0 24px;
}

.text-link {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .12em;
    font-weight: 850;
    color: var(--navy);
    display: inline-flex;
    gap: 10px;
    align-items: center;
}

.text-link:hover {
    color: var(--gold);
}

/* ==========================================================================
   Band Section & Methodology
   ========================================================================== */

.band {
    background: var(--paper);
    padding: 85px 0;
}

.band-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}

.band-visual {
    min-height: 380px;
    background: #cbd6e2;
    position: relative;
    overflow: hidden;
    border-radius: 4px;
}

.band-visual img {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
    object-fit: cover;
}

.band h2 {
    font-size: clamp(32px, 4vw, 46px);
    line-height: 1.1;
    letter-spacing: -.035em;
    margin: 14px 0;
}

.band p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--muted);
    margin-bottom: 24px;
}

.methodology-section {
    padding: 95px 0;
}

.section-header-center {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.method-card {
    background: var(--paper);
    border: 1px solid var(--line);
    padding: 32px 24px;
    border-radius: 4px;
    position: relative;
}

.method-num {
    font-size: 32px;
    font-weight: 900;
    color: var(--gold);
    opacity: 0.4;
    display: block;
    margin-bottom: 12px;
    letter-spacing: -0.05em;
}

.method-card h3 {
    font-size: 18px;
    letter-spacing: -0.02em;
    margin: 0 0 10px 0;
    color: var(--navy);
}

.method-card p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--muted);
    margin: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
    padding: 32px 0;
    background: #060b13;
    color: #8fa2be;
    font-size: 12px;
}

.foot {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
}

.foot-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.foot .brand {
    color: #fff;
    font-size: 24px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media(max-width: 900px) {
    .products { grid-template-columns: 1fr; }
    .intro { grid-template-columns: 1fr; gap: 20px; }
    .band-grid { grid-template-columns: 1fr; gap: 30px; }
    .cred-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .methodology-grid { grid-template-columns: 1fr 1fr; }
}

@media(max-width: 620px) {
    .wrap { width: calc(100% - 32px); }
    .top { height: 75px; }
    .hero { min-height: 580px; }
    .hero-content { padding: 60px 0; }
    .btn.secondary { margin: 12px 0 0; display: flex; width: 100%; margin-left: 0; }
    .cred-grid { grid-template-columns: 1fr; }
    .methodology-grid { grid-template-columns: 1fr; }
    .foot { flex-direction: column; align-items: flex-start; gap: 16px; }
}

/* ==========================================================================
   Additions: sticky header wrapper, mobile menu, accessibility, new sections
   ========================================================================== */
html { scroll-padding-top: 110px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -999px; top: 8px; z-index: 2000; background: var(--navy); color: #fff; padding: 10px 14px; border-radius: 3px; font-size: 13px; font-weight: 700; }
.skip-link:focus { left: 8px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

.brand-lockup { display: flex; align-items: center; gap: 14px; }
.brand-lockup img { border-radius: 4px; flex: none; }
.lang-toggle strong { color: var(--navy); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 1px solid var(--line); border-radius: 4px; background: #fff; cursor: pointer; flex-direction: column; justify-content: center; gap: 5px; }
.menu-toggle span { display: block; height: 2px; background: var(--navy); }

.banner-image { margin: 0; line-height: 0; background: var(--paper); }
.banner-image img { width: 100%; height: clamp(200px, 32vw, 420px); object-fit: cover; display: block; }

.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; max-width: 1000px; margin: 0 auto; }

.btn.outline { background: transparent; color: var(--navy); border: 1px solid var(--navy); box-shadow: none; margin-left: 8px; }
.btn.outline:hover { background: var(--navy); color: #fff; }

/* Ecosystem */
.ecosystem { padding: 20px 0 95px; }
.ecosystem .products { padding-bottom: 0; }
.ecosystem .product-body { padding: 28px; display: flex; flex-direction: column; height: 100%; }
.ecosystem .text-link { margin-top: auto; }
.ecosystem .product p { min-height: 0; }

/* Contact */
.contact-section { background: var(--navy); color: #fff; padding: 90px 0; }
.contact-inner { display: flex; gap: 60px; align-items: flex-start; }
.contact-inner > div:first-child { flex: 1 1 0; min-width: 0; }
.contact-section h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.1; letter-spacing: -.035em; margin: 12px 0 18px; }
.contact-section p { font-size: 15px; line-height: 1.85; color: #c7d0dd; margin: 0 0 16px; }
.contact-direct { font-size: 15px; line-height: 2; }
.contact-direct a { color: #fff; text-decoration: underline; }
.contact-form { flex: 0 0 min(500px, 100%); display: grid; gap: 14px; }
.contact-form label { display: grid; gap: 6px; }
.contact-form .lbl { font-size: 13px; font-weight: 700; color: #d9e0ea; }
.contact-form input, .contact-form textarea, .contact-form select { width: 100%; font: inherit; font-size: 15px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 3px; padding: 11px 12px; }
.contact-form textarea { resize: vertical; }
.contact-form .btn { justify-self: start; border: 0; cursor: pointer; background: var(--gold); color: var(--ink); }
.contact-form .btn:hover { background: #fff; }
.contact-form .form-note { font-size: 13px; color: #aab6c6; margin: 0; }

.foot-legal { font-size: 12px; line-height: 1.7; }
.foot-links a:hover { color: #fff; }

@media(max-width: 1100px) {
    .top { height: 78px; }
    .menu-toggle { display: flex; }
    nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 20px; font-size: 14px; box-shadow: 0 14px 30px rgba(0,0,0,.08); }
    nav.open { display: flex; }
    nav a { padding: 15px 0; border-bottom: 1px solid #edf0f4; }
    nav a.active::after { display: none; }
    nav .lang-toggle { align-self: flex-start; margin-top: 16px; }
}
@media(max-width: 900px) {
    .faq-grid { grid-template-columns: 1fr; }
    .contact-inner { flex-direction: column; gap: 36px; }
    .contact-form { flex-basis: auto; width: 100%; }
}
@media(max-width: 620px) {
    .inst-info span + span { display: none; }
    .brand { font-size: 23px; }
    .btn.outline { margin: 12px 0 0 0; }
    .contact-section { padding: 64px 0; }
}
@media(max-width: 480px) { .brand-subtitle { display: none; } }

.inst-container { gap: 16px; }
.inst-contact a:hover { color: #fff; }