:root {
    --dark-bg: #1E1B2E;
    --purple: #7B3FF2;
    --purple-hover: #6230C9; 
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --text-muted: #6C757D;
    --font-main: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    color: var(--dark-bg);
    background-color: var(--white);
    line-height: 1.5;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

/* АНИМАЦИИ */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ШАПКА */
header {
    padding: 15px 0;
    border-bottom: 1px solid rgba(30, 27, 46, 0.08);
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; text-decoration: none; }
.logo img { height: 50px; width: auto; display: block; transition: transform 0.3s ease; }
.logo:hover img { transform: scale(1.02); }

nav a { text-decoration: none; color: var(--dark-bg); margin-left: 30px; font-size: 15px; font-weight: 500; transition: color 0.3s; }
nav a:hover { color: var(--purple); }

/* ГЛАВНЫЙ ЭКРАН */
.hero { padding: 80px 0; display: flex; align-items: center; gap: 40px; flex-wrap: nowrap; }
.hero-content { flex: 1 1 45%; min-width: 0; }
.hero-title { font-size: 52px; font-weight: 800; line-height: 1.1; margin-bottom: 20px; letter-spacing: -1px; }
.hero-title span { color: var(--purple); }
.hero-subtitle { font-size: 18px; color: var(--text-muted); margin-bottom: 40px; max-width: 480px; }

.btn {
    display: inline-block; padding: 16px 32px; border-radius: 12px;
    font-weight: 600; font-size: 16px; text-decoration: none;
    cursor: pointer; transition: all 0.3s ease; border: none; font-family: inherit;
    line-height: 1.2;
}
.btn-primary { background: linear-gradient(135deg, var(--purple), #9B6DFF); color: var(--white); box-shadow: 0 4px 15px rgba(123, 63, 242, 0.3); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(123, 63, 242, 0.5); }
.btn-outline { background-color: transparent; color: var(--dark-bg); border: 2px solid var(--dark-bg); margin-left: 15px; }
.btn-outline:hover { background-color: var(--dark-bg); color: var(--white); transform: translateY(-3px); }

.hero-visual {
    flex: 1 1 50%; min-width: 0; height: 450px;
    background: linear-gradient(135deg, #F8F9FA 0%, #EBE5F5 100%);
    border-radius: 24px; border: 1px solid rgba(30, 27, 46, 0.05);
    position: relative; overflow: hidden;
    box-shadow: inset 0 0 50px rgba(123, 63, 242, 0.05);
}

/* CSS-ИЛЛЮСТРАЦИЯ ПРИНТЕРА */
.printer-scene { position: absolute; inset: 0; display: flex; align-items: flex-end; justify-content: center; padding-bottom: 30px; }
.printer-machine { position: relative; width: 340px; height: 340px; }
.printer-top-frame { position: absolute; top: 20px; left: 20px; right: 20px; height: 12px; background: var(--dark-bg); border-radius: 6px; }
.printer-left-column, .printer-right-column { position: absolute; top: 20px; bottom: 60px; width: 12px; background: var(--dark-bg); border-radius: 6px; }
.printer-left-column { left: 20px; }
.printer-right-column { right: 20px; }
.printer-back-panel { position: absolute; top: 32px; left: 32px; right: 32px; bottom: 70px; background: rgba(123, 63, 242, 0.03); border-radius: 8px; border: 1px dashed rgba(123, 63, 242, 0.2); }
.printer-rail { position: absolute; top: 60px; left: 40px; right: 40px; height: 6px; background: #2E3138; border-radius: 3px; }
.printer-extruder { position: absolute; top: 50px; left: 50%; transform: translateX(-50%); width: 64px; height: 42px; background: var(--dark-bg); border-radius: 8px; z-index: 5; box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.printer-extruder::before { content: ''; position: absolute; top: 10px; left: 10px; width: 20px; height: 20px; border-radius: 50%; background: radial-gradient(circle, var(--purple) 0%, var(--purple-hover) 100%); opacity: 0.9; }
.printer-extruder::after { content: ''; position: absolute; top: 12px; right: 10px; width: 8px; height: 8px; border-radius: 50%; background: #4CAF50; box-shadow: 0 0 6px #4CAF50; }
.printer-nozzle { position: absolute; top: 92px; left: 50%; transform: translateX(-50%); width: 8px; height: 16px; background: var(--purple); border-radius: 0 0 4px 4px; z-index: 5; }
.printer-molten { position: absolute; top: 108px; left: 50%; transform: translateX(-50%); width: 2px; height: 30px; background: linear-gradient(180deg, var(--purple), rgba(123,63,242,0.4)); z-index: 4; }
.printer-part { position: absolute; bottom: 70px; left: 50%; transform: translateX(-50%); width: 120px; z-index: 3; }
.printer-layer { height: 8px; margin-bottom: 2px; border-radius: 2px; background: linear-gradient(90deg, rgba(123,63,242,0.95), rgba(123,63,242,0.6)); box-shadow: 0 1px 2px rgba(123,63,242,0.15); }
.layer-1 { width: 100%; }
.layer-2 { width: 94%; margin-left: auto; margin-right: auto; }
.layer-3 { width: 86%; margin-left: auto; margin-right: auto; }
.layer-4 { width: 78%; margin-left: auto; margin-right: auto; }
.layer-5 { width: 68%; margin-left: auto; margin-right: auto; }
.layer-6 { width: 56%; margin-left: auto; margin-right: auto; background: linear-gradient(90deg, var(--purple), #9B6DFF); }
.printer-bed { position: absolute; bottom: 60px; left: 30px; right: 30px; height: 12px; background: linear-gradient(180deg, #2E3138, var(--dark-bg)); border-radius: 4px; z-index: 2; }
.printer-bed-texture { position: absolute; bottom: 72px; left: 30px; right: 30px; height: 2px; background: repeating-linear-gradient(90deg, rgba(30,27,46,0.15) 0 4px, transparent 4px 8px); }
.printer-spool { position: absolute; bottom: 130px; right: -10px; width: 60px; height: 60px; border-radius: 50%; background: var(--white); border: 8px solid var(--dark-bg); z-index: 1; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.printer-spool::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 18px; height: 18px; border-radius: 50%; background: var(--purple); }
.printer-spool::after { content: ''; position: absolute; top: 4px; left: 4px; right: 4px; bottom: 4px; border-radius: 50%; border: 2px dashed rgba(123,63,242,0.4); }
.printer-filament-arc { position: absolute; top: 100px; right: 45px; width: 2px; height: 60px; background: var(--purple); opacity: 0.6; transform: rotate(35deg); transform-origin: top; border-radius: 2px; z-index: 1; }
.printer-base { position: absolute; bottom: 40px; left: 10px; right: 10px; height: 22px; background: var(--dark-bg); border-radius: 6px; z-index: 1; }
.printer-base::before { content: ''; position: absolute; bottom: -6px; left: 20px; width: 60px; height: 6px; background: var(--dark-bg); border-radius: 3px; }
.printer-base::after { content: ''; position: absolute; bottom: -6px; right: 20px; width: 60px; height: 6px; background: var(--dark-bg); border-radius: 3px; }

/* СЕКЦИИ */
section { padding: 80px 0; }
.section-title { font-size: 34px; font-weight: 800; margin-bottom: 15px; text-align: center; letter-spacing: -0.5px; }
.section-desc { text-align: center; color: var(--text-muted); max-width: 700px; margin: 0 auto 50px; font-size: 17px; }

/* FDM БЛОК */
.fdm-section { background-color: var(--light-gray); }
.fdm-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.fdm-card { background: var(--white); padding: 30px; border-radius: 20px; border: 1px solid rgba(30, 27, 46, 0.05); transition: all 0.3s ease; }
.fdm-card:hover { transform: translateY(-8px); box-shadow: 0 15px 35px rgba(123, 63, 242, 0.08); border-color: rgba(123, 63, 242, 0.2); }
.fdm-icon { width: 48px; height: 48px; background: linear-gradient(135deg, var(--purple), #9B6DFF); border-radius: 12px; margin-bottom: 20px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 800; font-size: 20px; box-shadow: 0 4px 10px rgba(123, 63, 242, 0.2); }
.fdm-card h3 { font-size: 18px; margin-bottom: 12px; font-weight: 700; }
.fdm-card p { font-size: 14px; color: var(--text-muted); }

.fdm-highlight { margin-top: 40px; background: var(--white); border-radius: 20px; padding: 40px; border: 1px solid rgba(30, 27, 46, 0.05); display: flex; gap: 40px; align-items: center; flex-wrap: wrap; }
.fdm-highlight-text { flex: 1 1 45%; min-width: 280px; }
.fdm-highlight-text h3 { font-size: 24px; font-weight: 800; margin-bottom: 20px; }
.fdm-highlight-text ul { list-style: none; }
.fdm-highlight-text li { margin-bottom: 12px; padding-left: 24px; position: relative; font-size: 16px; color: var(--dark-bg); }
.fdm-highlight-text li::before { content: ''; position: absolute; left: 0; top: 8px; width: 8px; height: 8px; background-color: var(--purple); border-radius: 2px; }

/* 3D-СЛОИ */
.fdm-highlight-visual {
    flex: 1 1 45%; min-width: 260px; height: 280px;
    background: var(--light-gray);
    border-radius: 16px;
    border: 1px solid rgba(30, 27, 46, 0.05);
    position: relative; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    background-image: 
        linear-gradient(rgba(30, 27, 46, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 27, 46, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}
.layer-art { position: relative; width: 180px; height: 160px; transform: rotateX(55deg) rotateZ(-45deg); transform-style: preserve-3d; animation: float 6s ease-in-out infinite; }
@keyframes float { 0% { transform: rotateX(55deg) rotateZ(-45deg) translateY(0); } 50% { transform: rotateX(55deg) rotateZ(-45deg) translateY(-10px); } 100% { transform: rotateX(55deg) rotateZ(-45deg) translateY(0); } }
.layer-line { position: absolute; height: 20px; border-radius: 10px; background: linear-gradient(90deg, var(--purple), #9B6DFF); box-shadow: 0 4px 0 var(--purple-hover), 0 8px 10px rgba(123, 63, 242, 0.3), inset 0 2px 2px rgba(255,255,255,0.4); transform-style: preserve-3d; }
.line-1 { top: 0; left: 0; width: 100%; transform: translateZ(0); }
.line-2 { top: 24px; left: 10px; width: 90%; transform: translateZ(10px); background: linear-gradient(90deg, #6230C9, #7B3FF2); }
.line-3 { top: 48px; left: 20px; width: 80%; transform: translateZ(20px); background: linear-gradient(90deg, #7B3FF2, #9B6DFF); }
.line-4 { top: 72px; left: 30px; width: 70%; transform: translateZ(30px); background: linear-gradient(90deg, #9B6DFF, #BFA3FF); }
.line-5 { top: 96px; left: 40px; width: 60%; transform: translateZ(40px); background: linear-gradient(90deg, #BFA3FF, #E0D4FF); }
.layer-line::after { content: ''; position: absolute; top: 2px; left: 10%; right: 10%; height: 4px; background: rgba(255,255,255,0.6); border-radius: 2px; filter: blur(1px); }

/* ПРИНТЕРЫ */
.printers-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.printer-card { background: var(--white); border-radius: 24px; padding: 30px; display: flex; flex-direction: column; gap: 25px; border: 1px solid rgba(30, 27, 46, 0.05); transition: all 0.3s ease; }
.printer-card:hover { box-shadow: 0 20px 40px rgba(123, 63, 242, 0.08); border-color: rgba(123, 63, 242, 0.2); transform: translateY(-5px); }
.printer-info { min-width: 0; }
.printer-label { display: flex; align-items: center; gap: 12px; margin-bottom: 15px; }
.printer-label-dot { width: 10px; height: 10px; background-color: var(--purple); border-radius: 3px; }
.printer-label-text { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--purple); }
.printer-title { font-size: 26px; font-weight: 800; margin-bottom: 10px; }
.printer-desc { font-size: 15px; color: var(--text-muted); margin-bottom: 20px; }
.printer-features { display: grid; grid-template-columns: 1fr; gap: 12px; }
.printer-feature { display: flex; align-items: center; gap: 10px; }
.printer-feature span { font-size: 14px; font-weight: 500; }
.printer-visual { width: 100%; height: 360px; background: var(--light-gray); border-radius: 16px; border: 1px solid rgba(30, 27, 46, 0.08); overflow: hidden; position: relative; display: flex; align-items: center; justify-content: center; }
.printer-visual img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.5s ease; }
.printer-card:hover .printer-visual img { transform: scale(1.05); }

/* МАТЕРИАЛЫ */
.materials-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 15px; }
.material-card { background: var(--white); border: 1px solid rgba(30, 27, 46, 0.08); border-radius: 16px; padding: 24px 18px; transition: all 0.3s ease; position: relative; overflow: hidden; display: flex; flex-direction: column; }
.material-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background-color: var(--material-color, var(--purple)); opacity: 0.4; transition: opacity 0.3s; }
.material-card:hover::before { opacity: 1; }
.material-card:hover { border-color: var(--material-color, var(--purple)); transform: translateY(-5px); box-shadow: 0 15px 35px rgba(123, 63, 242, 0.1); }
.material-icon { width: 40px; height: 40px; border-radius: 10px; background-color: var(--light-gray); color: var(--material-color, var(--purple)); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; transition: all 0.3s; }
.material-card:hover .material-icon { background-color: var(--material-color, var(--purple)); color: var(--white); }
.material-name { font-size: 18px; font-weight: 800; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.material-name span { width: 24px; height: 24px; background: var(--light-gray); border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 10px; color: var(--dark-bg); font-weight: 700; flex-shrink: 0; }
.material-prop { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px dashed #eee; line-height: 1.3; }
.material-desc { font-size: 13px; color: var(--dark-bg); line-height: 1.5; flex-grow: 1; }
.material-desc strong { color: var(--dark-bg); font-weight: 700; }
.material-tags { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 5px; }
.material-tag { font-size: 10px; background: var(--light-gray); color: var(--text-muted); padding: 3px 8px; border-radius: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; transition: all 0.3s; }
.material-card:hover .material-tag { background-color: var(--material-color, var(--purple)); color: var(--white); }

/* ФОРМА */
.contact-section { background-color: var(--light-gray); }
.contact-inner { display: flex; gap: 50px; align-items: flex-start; flex-wrap: wrap; }
.contact-info { flex: 1 1 40%; min-width: 280px; }
.contact-info h2 { font-size: 32px; font-weight: 800; margin-bottom: 15px; }
.contact-info p { color: var(--text-muted); margin-bottom: 30px; font-size: 16px; }
.contact-detail { display: flex; align-items: center; gap: 15px; margin-bottom: 15px; font-weight: 600; font-size: 18px; }
.contact-detail span { width: 24px; height: 24px; background-color: var(--purple); border-radius: 6px; display: inline-block; flex-shrink: 0; opacity: 0.8; }

.contact-form { flex: 1 1 50%; min-width: 280px; background: var(--white); padding: 40px; border-radius: 24px; border: 1px solid rgba(30, 27, 46, 0.08); box-shadow: 0 20px 50px rgba(123, 63, 242, 0.05); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--dark-bg); }
.form-group input, .form-group textarea { width: 100%; padding: 14px 16px; border: 1px solid #E0E0E0; border-radius: 12px; font-family: inherit; font-size: 15px; transition: all 0.3s; background-color: var(--light-gray); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--purple); background-color: var(--white); box-shadow: 0 0 0 3px rgba(123, 63, 242, 0.1); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-submit { width: 100%; margin-top: 10px; }

/* ПОДВАЛ */
footer { padding: 40px 0; border-top: 1px solid rgba(30, 27, 46, 0.08); text-align: center; font-size: 14px; color: var(--text-muted); background: var(--white); }

/* МОДАЛЬНОЕ ОКНО */
.modal-overlay { position: fixed; inset: 0; background: rgba(30, 27, 46, 0.7); display: none; align-items: center; justify-content: center; z-index: 1000; backdrop-filter: blur(5px); opacity: 0; transition: opacity 0.3s; }
.modal-overlay.active { display: flex; opacity: 1; }
.modal { background: var(--white); padding: 40px; border-radius: 24px; max-width: 400px; width: 90%; text-align: center; box-shadow: 0 25px 70px rgba(0,0,0,0.3); transform: scale(0.9); transition: transform 0.3s; }
.modal-overlay.active .modal { transform: scale(1); }
.modal h3 { font-size: 24px; margin-bottom: 15px; color: var(--purple); font-weight: 800; }
.modal p { margin-bottom: 25px; color: var(--text-muted); font-size: 16px; }

/* АДАПТИВ */
@media (max-width: 1024px) {
    .materials-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
    .hero { flex-direction: column; text-align: center; padding: 50px 0; gap: 40px; }
    .hero-content { flex: 1 1 100%; }
    .hero-subtitle { margin: 0 auto 30px; }
    .hero-visual { width: 100%; flex: 1 1 100%; height: 350px; }
    .contact-inner { flex-direction: column; }
    .contact-form { width: 100%; padding: 25px; }
    nav { display: none; }
    .fdm-highlight { flex-direction: column; padding: 30px; }
    .fdm-highlight-visual { width: 100%; height: 240px; }
    .section-title { font-size: 28px; }
    .hero-title { font-size: 38px; }
    .printer-card { padding: 25px; }
    .printer-features { grid-template-columns: 1fr 1fr; }
    .printer-machine { transform: scale(0.85); }
    .printer-visual { height: 300px; }
    .logo img { height: 40px; }
}
@media (max-width: 600px) {
    .materials-grid { grid-template-columns: 1fr; }
    .form-group[style*="display: flex"] { flex-direction: column; }
    .form-group[style*="display: flex"] > div { flex: 1 1 100% !important; }
}