/* ============================
   Nezha 3D Studio — European Site v2
   Industrial 3D Printing & CNC
   ============================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary-dark: #141414;
    --primary-red: #c41e3a;
    --red-dark: #a01830;
    --accent-gray: #f5f5f5;
    --text-dark: #222;
    --text-light: #5f6368;
    --text-muted: #9499a0;
    --border-light: #e4e4e4;
    --white: #fff;
    --radius: 12px;
    --shadow: 0 12px 30px rgba(0,0,0,.08);
    --transition: all .3s ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.65;
    color: var(--text-dark);
    background: var(--white);
}

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- Navigation ---------- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: var(--transition);
}
.navbar .container {
    display: flex; justify-content: space-between; align-items: center; height: 70px; gap: 16px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--primary-dark); }
.logo-icon {
    width: 38px; height: 38px; background: var(--primary-red); color: var(--white);
    border-radius: 9px; display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 800; flex-shrink: 0;
}
.logo-text { font-weight: 700; font-size: 18px; line-height: 1.15; }
.logo-text small { display: block; font-size: 10px; font-weight: 500; color: var(--text-muted); letter-spacing: .5px; text-transform: uppercase; }

.nav-menu { display: flex; list-style: none; gap: 26px; align-items: center; }
.nav-menu a { text-decoration: none; color: var(--text-dark); font-weight: 500; font-size: 15px; transition: var(--transition); }
.nav-menu a:hover { color: var(--primary-red); }
.btn-nav { background: var(--primary-red); color: var(--white) !important; padding: 10px 22px; border-radius: 7px; font-weight: 600; }
.btn-nav:hover { background: var(--red-dark); }

.lang-switch { display: flex; gap: 2px; align-items: center; font-size: 13px; }
.lang-switch a {
    text-decoration: none; color: var(--text-muted); font-weight: 600;
    padding: 4px 7px; border-radius: 5px; transition: var(--transition); font-size: 13px;
}
.lang-switch a:hover { color: var(--primary-red); background: var(--accent-gray); }
.lang-switch a.active { color: var(--white); background: var(--primary-dark); }
.lang-switch span.sep { color: var(--border-light); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.nav-toggle span { width: 25px; height: 2px; background: var(--primary-dark); transition: var(--transition); }

/* ---------- Buttons ---------- */
.btn-primary, .btn-secondary {
    padding: 14px 32px; border-radius: 8px; font-weight: 600; font-size: 16px;
    text-decoration: none; transition: var(--transition); display: inline-block;
}
.btn-primary { background: var(--primary-red); color: var(--white); }
.btn-primary:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(196,30,58,.3); }
.btn-secondary { background: var(--white); color: var(--primary-dark); border: 2px solid var(--border-light); }
.btn-secondary:hover { border-color: var(--primary-red); color: var(--primary-red); }

/* ---------- Hero ---------- */
.hero { padding: 130px 0 80px; background: linear-gradient(135deg, #f8f9fa 0%, #fff 60%, #fdf3f4 100%); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: center; }
.hero-tag { font-size: 13px; font-weight: 700; color: var(--primary-red); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 18px; }
.hero h1 { font-size: 50px; font-weight: 800; line-height: 1.18; color: var(--primary-dark); margin-bottom: 22px; letter-spacing: -1px; }
.hero-desc { font-size: 18px; color: var(--text-light); margin-bottom: 32px; line-height: 1.75; }
.hero-desc strong { color: var(--text-dark); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-media { position: relative; }
.hero-media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); }
.hero-badge {
    position: absolute; left: -18px; bottom: 28px; background: var(--white);
    border-radius: 10px; padding: 14px 20px; box-shadow: var(--shadow);
    font-size: 14px; font-weight: 600; color: var(--primary-dark);
}
.hero-badge span { display: block; font-size: 12px; color: var(--text-muted); font-weight: 500; }

.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 60px; padding-top: 44px; border-top: 1px solid var(--border-light); }
.stat { text-align: center; }
.stat-number { display: block; font-size: 38px; font-weight: 800; color: var(--primary-dark); margin-bottom: 6px; }
.stat-label { font-size: 13px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .8px; }

/* ---------- Sections ---------- */
section { padding: 90px 0; }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 55px; }
.section-tag { font-size: 13px; font-weight: 700; color: var(--primary-red); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 14px; }
.section-header h2 { font-size: 38px; font-weight: 700; color: var(--primary-dark); margin-bottom: 18px; line-height: 1.3; }
.section-desc { font-size: 17px; color: var(--text-light); line-height: 1.7; }

/* ---------- Technologies ---------- */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.tech-card {
    background: var(--white); border: 1px solid var(--border-light); border-radius: var(--radius);
    overflow: hidden; transition: var(--transition); display: flex; flex-direction: column;
}
.tech-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--primary-red); }
.tech-card img { width: 100%; height: 170px; object-fit: cover; }
.tech-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.tech-acro { font-size: 20px; font-weight: 800; color: var(--primary-dark); }
.tech-name { font-size: 14px; color: var(--primary-red); font-weight: 600; margin: 2px 0 10px; }
.tech-body p { color: var(--text-light); font-size: 14.5px; line-height: 1.7; margin-bottom: 14px; }
.tech-tag { font-size: 12px; padding: 4px 12px; background: var(--accent-gray); border-radius: 20px; font-weight: 500; color: var(--text-dark); margin-top: auto; align-self: flex-start; }

/* ---------- Machines ---------- */
.machines { background: var(--accent-gray); }
.machine-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.machine-card { background: var(--white); border-radius: var(--radius); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.machine-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.machine-img { position: relative; background: #fafafa; height: 230px; display: flex; align-items: center; justify-content: center; padding: 24px; }
.machine-img img { max-height: 190px; width: auto; object-fit: contain; }
.machine-flag {
    position: absolute; top: 14px; left: 14px; background: var(--primary-dark); color: var(--white);
    font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
    padding: 4px 12px; border-radius: 20px;
}
.machine-body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.machine-body h3 { font-size: 19px; font-weight: 700; color: var(--primary-dark); margin-bottom: 10px; }
.machine-body p { color: var(--text-light); font-size: 14.5px; line-height: 1.7; }
.machine-spec { margin-top: 14px; font-size: 13px; color: var(--text-muted); font-weight: 600; }

/* ---------- Industries ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.industry-card {
    position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/3;
    display: flex; align-items: flex-end; text-decoration: none; transition: var(--transition);
}
.industry-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.industry-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.industry-card:hover img { transform: scale(1.06); }
.industry-card .overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.78) 0%, rgba(0,0,0,.15) 55%, transparent 100%); }
.industry-card h3 { position: relative; color: var(--white); font-size: 17px; font-weight: 700; padding: 18px; z-index: 1; width: 100%; }

/* ---------- Cases ---------- */
.cases { background: var(--white); }
.filter-bar { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-btn {
    padding: 9px 22px; border-radius: 24px; border: 1.5px solid var(--border-light);
    background: var(--white); font-size: 14px; font-weight: 600; color: var(--text-light);
    cursor: pointer; transition: var(--transition); font-family: inherit;
}
.filter-btn:hover { border-color: var(--primary-red); color: var(--primary-red); }
.filter-btn.active { background: var(--primary-red); border-color: var(--primary-red); color: var(--white); }
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.case-card { border-radius: var(--radius); overflow: hidden; background: var(--accent-gray); transition: var(--transition); }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.case-card img { width: 100%; height: 180px; object-fit: cover; }
.case-cap { padding: 14px 16px; font-size: 13.5px; font-weight: 600; color: var(--text-dark); line-height: 1.5; }
.case-cap small { display: block; font-weight: 500; color: var(--text-muted); font-size: 12px; margin-top: 2px; }
.case-card.hidden { display: none; }

/* ---------- Trust / Credibility ---------- */
.trust { background: var(--primary-dark); color: var(--white); }
.trust .section-header h2 { color: var(--white); }
.trust .section-desc { color: rgba(255,255,255,.7); }
.trust-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 50px; }
.trust-stat { text-align: center; padding: 28px 16px; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); }
.trust-stat .stat-number { color: var(--white); font-size: 34px; }
.trust-stat .stat-label { color: rgba(255,255,255,.65); }
.trust-badges { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px 40px; max-width: 900px; margin: 0 auto; }
.trust-badge { display: flex; gap: 14px; align-items: flex-start; font-size: 15px; line-height: 1.6; color: rgba(255,255,255,.88); }
.trust-badge .mark { color: var(--primary-red); font-weight: 800; font-size: 18px; flex-shrink: 0; }

/* ---------- Clients ---------- */
.clients-wall { display: grid; grid-template-columns: repeat(8, 1fr); gap: 18px; align-items: center; margin: 40px 0; }
.client-logo {
    background: var(--white); border: 1px solid var(--border-light); border-radius: 10px;
    height: 76px; display: flex; align-items: center; justify-content: center; padding: 14px;
    transition: var(--transition);
}
.client-logo:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.client-logo img { max-width: 100%; max-height: 100%; object-fit: contain; filter: grayscale(15%); }
.clients-note { text-align: center; color: var(--text-muted); font-size: 14.5px; max-width: 760px; margin: 0 auto; }

/* ---------- Services (EU) ---------- */
.services-eu { background: var(--accent-gray); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { background: var(--white); padding: 28px; border-radius: var(--radius); transition: var(--transition); }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.service-num {
    width: 40px; height: 40px; border-radius: 50%; background: var(--primary-red); color: var(--white);
    display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 16px; margin-bottom: 16px;
}
.service-card h3 { font-size: 17px; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
.service-card p { color: var(--text-light); font-size: 14px; line-height: 1.65; }
.service-logistics {
    margin-top: 36px; background: var(--white); border-left: 4px solid var(--primary-red);
    border-radius: 10px; padding: 26px 30px; font-size: 15px; color: var(--text-light); line-height: 1.8;
}
.service-logistics strong { color: var(--text-dark); }

/* ---------- CTA ---------- */
.cta { background: linear-gradient(135deg, var(--primary-red) 0%, #8f1529 100%); color: var(--white); text-align: center; }
.cta h2 { font-size: 36px; font-weight: 800; margin-bottom: 16px; }
.cta p { font-size: 17px; color: rgba(255,255,255,.88); max-width: 640px; margin: 0 auto 32px; line-height: 1.7; }
.cta .btn-white {
    background: var(--white); color: var(--primary-red); padding: 15px 38px; border-radius: 8px;
    font-weight: 700; font-size: 16px; text-decoration: none; display: inline-block; transition: var(--transition);
}
.cta .btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.25); }
.cta .btn-ghost {
    background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.6);
    padding: 13px 36px; border-radius: 8px; font-weight: 600; font-size: 16px; text-decoration: none;
    display: inline-block; margin-left: 12px; transition: var(--transition);
}
.cta .btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,.1); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.contact-info h2 { font-size: 34px; font-weight: 700; color: var(--primary-dark); margin-bottom: 18px; }
.contact-info > p { color: var(--text-light); line-height: 1.75; margin-bottom: 28px; }
.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; flex-direction: column; gap: 3px; }
.contact-label { font-size: 12px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.contact-item a { color: var(--primary-red); text-decoration: none; font-weight: 600; font-size: 16px; }
.contact-item span.val { font-size: 16px; color: var(--text-dark); }
.contact-panel {
    background: var(--white); border: 1px solid var(--border-light); border-radius: var(--radius);
    padding: 36px; box-shadow: 0 4px 18px rgba(0,0,0,.04);
}
.contact-panel h3 { font-size: 20px; font-weight: 700; color: var(--primary-dark); margin-bottom: 10px; }
.contact-panel > p { color: var(--text-light); font-size: 14.5px; margin-bottom: 22px; }
.contact-panel .btn-primary { width: 100%; text-align: center; margin-bottom: 12px; }
.contact-panel .btn-secondary { width: 100%; text-align: center; }
.contact-note { font-size: 13px; color: var(--text-muted); text-align: center; margin-top: 14px; line-height: 1.6; }

/* ---------- Footer ---------- */
.footer { background: var(--primary-dark); color: var(--white); padding: 60px 0 28px; }
.footer-content { display: grid; grid-template-columns: 1.3fr 2fr; gap: 50px; margin-bottom: 40px; }
.footer-brand { display: flex; flex-direction: column; gap: 12px; }
.footer-brand .brand-row { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; }
.footer-brand p { color: rgba(255,255,255,.6); font-size: 14px; line-height: 1.7; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.footer-links h5 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 18px; color: rgba(255,255,255,.85); }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 11px; }
.footer-links a { color: rgba(255,255,255,.68); text-decoration: none; font-size: 14px; transition: var(--transition); }
.footer-links a:hover { color: var(--white); }
.footer-bottom { padding-top: 26px; border-top: 1px solid rgba(255,255,255,.12); text-align: center; }
.footer-bottom p { color: rgba(255,255,255,.48); font-size: 13px; margin-bottom: 6px; }
.footer-lang { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.footer-lang a { color: rgba(255,255,255,.68); text-decoration: none; font-size: 14px; }
.footer-lang a:hover { color: var(--white); }
.footer-lang a.active { color: var(--white); font-weight: 700; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .industry-grid, .case-grid { grid-template-columns: repeat(3, 1fr); }
    .clients-wall { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 968px) {
    .hero-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero-media { max-width: 520px; }
    .hero h1 { font-size: 38px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .tech-grid, .service-grid { grid-template-columns: repeat(2, 1fr); }
    .machine-grid, .contact-grid { grid-template-columns: 1fr; }
    .trust-stats { grid-template-columns: repeat(2, 1fr); }
    .trust-badges { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; gap: 36px; }
    .nav-menu {
        position: fixed; top: 70px; left: 0; right: 0; background: var(--white);
        flex-direction: column; padding: 22px; gap: 18px; border-bottom: 1px solid var(--border-light);
        transform: translateY(-160%); transition: var(--transition); align-items: flex-start;
    }
    .nav-menu.active { transform: translateY(0); }
    .nav-toggle { display: flex; }
    .lang-switch { order: 3; }
}
@media (max-width: 640px) {
    .hero { padding: 110px 0 60px; }
    .hero h1 { font-size: 30px; }
    .hero-desc { font-size: 16px; }
    section { padding: 60px 0; }
    .section-header h2 { font-size: 27px; }
    .tech-grid, .service-grid, .industry-grid, .case-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .clients-wall { grid-template-columns: repeat(3, 1fr); }
    .cta h2 { font-size: 27px; }
    .cta .btn-ghost { margin-left: 0; margin-top: 12px; }
    .contact-panel { padding: 26px 20px; }
    .footer-links { grid-template-columns: 1fr 1fr; }
}