:root {
    --bg-primary: #0f1218;
    --bg-card: #181d26;
    --bg-surface: #222936;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --accent: #d4af37;
    --accent-hover: #e5c158;
    --border-color: #2d3748;
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: clip;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

/* Header */
.header {
    background-color: rgba(15, 18, 24, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand__icon {
    color: var(--accent);
}

.brand__text strong {
    display: block;
    font-size: 16px;
    letter-spacing: 0.5px;
}

.brand__text small {
    color: var(--text-muted);
    font-size: 11px;
}

.nav {
    display: flex;
    gap: 24px;
}

.nav__link {
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

.nav__link:hover {
    color: var(--accent);
}

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

.phone-link {
    font-weight: 700;
    font-size: 16px;
    color: var(--text-main);
}

.messengers {
    display: flex;
    gap: 8px;
}

.messenger-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-surface);
    color: var(--accent);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.messenger-btn:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
}

/* Hero Section */
.hero {
    padding: 160px 0 80px;
    background: linear-gradient(135deg, #0f1218 0%, #1a202c 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 450px;
    gap: 40px;
    align-items: center;
}

.badge {
    display: inline-block;
    background-color: rgba(212, 175, 55, 0.1);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.hero h1 {
    font-size: 40px;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero__lead {
    color: var(--text-muted);
    font-size: 18px;
    margin-bottom: 30px;
}

.hero__features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.feature-icon {
    color: var(--accent);
}

.hero__actions {
    display: flex;
    gap: 16px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-full {
    width: 100%;
}

/* Technical Card (Hero Visual) */
.technical-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.technical-card__header {
    background-color: var(--bg-surface);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--border-color);
}

.dot:nth-child(1) { background-color: #ef4444; }
.dot:nth-child(2) { background-color: #f59e0b; }
.dot:nth-child(3) { background-color: #10b981; }

.card-title {
    margin-left: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.technical-card__body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding-bottom: 8px;
}

.text-accent {
    color: var(--accent);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section-header h2 {
    font-size: 32px;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 16px;
}

/* Tabs */
.tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.service-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.service-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

.service-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.price {
    font-weight: 700;
    color: var(--accent);
    font-size: 16px;
}

.btn-text {
    color: var(--text-main);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-text:hover {
    color: var(--accent);
}

/* Quiz Section */
.quiz-section {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px;
}

.quiz-steps-indicator {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.step-dot {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 600;
}

.step-dot.active {
    color: var(--accent);
}

.quiz-step {
    display: none;
}

.quiz-step.active {
    display: block;
}

.quiz-step h3 {
    margin-bottom: 20px;
    font-size: 20px;
}

.options-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
}

.option-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.option-card:hover {
    border-color: var(--accent);
}

.option-card input {
    accent-color: var(--accent);
}

.quiz-buttons {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.quiz-result-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius);
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.price-range {
    font-size: 18px;
    color: var(--accent);
    font-weight: 700;
}

/* Process Section */
.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.process-step {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--radius);
    position: relative;
}

.step-num {
    font-size: 36px;
    font-weight: 800;
    color: rgba(212, 175, 55, 0.2);
    margin-bottom: 12px;
}

.process-step h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.process-step p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Map Section */
.service-map-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
}

.map-visual {
    padding: 20px;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-info {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}

.map-info h3 {
    font-size: 22px;
}

.map-info p {
    color: var(--text-muted);
    font-size: 15px;
}

.check-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 14px;
}

.check-list li::before {
    content: "✓ ";
    color: var(--accent);
    font-weight: bold;
    margin-right: 8px;
}

/* FAQ Section */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    color: var(--text-main);
    padding: 20px;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-icon {
    color: var(--accent);
    font-size: 20px;
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 20px;
}

/* Contacts & Form */
.contacts-section {
    background: linear-gradient(135deg, #181d26 0%, #0f1218 100%);
    border-top: 1px solid var(--border-color);
}

.contacts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.contacts-info h2 {
    font-size: 32px;
    margin-bottom: 16px;
}

.contacts-info p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.contact-card-item strong {
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.phone-lg {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent);
}

.messengers-row {
    display: flex;
    gap: 12px;
}

.form-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--radius);
}

.lead-form h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.form-subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: var(--radius);
    color: var(--text-main);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
}

.checkbox-label {
    display: flex;
    gap: 10px;
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
}

.checkbox-label input {
    margin-top: 2px;
    accent-color: var(--accent);
}

.checkbox-label a {
    color: var(--accent);
    text-decoration: underline;
}

.form-status {
    margin-top: 15px;
    font-size: 14px;
    text-align: center;
}

/* Footer */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer__container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer__col strong {
    display: block;
    font-size: 16px;
    margin-bottom: 16px;
}

.footer__col p {
    color: var(--text-muted);
    font-size: 14px;
}

.footer__col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer__col a {
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

.footer__col a:hover {
    color: var(--accent);
}

.footer__bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 968px) {
    .hero__container, .service-map-card, .contacts-grid, .footer__container {
        grid-template-columns: 1fr;
    }
    .nav {
        display: none;
    }
    .hero h1 {
        font-size: 32px;
    }
}