body {
    margin: 0;
    padding: 20px;
    font-family: 'Roboto', sans-serif;
    background-color: #e5e5e5;
}

/* Smooth scrolling for anchor navigation */
html { scroll-behavior: smooth; }

.main-header {
    display: flex;
    justify-content: center;
}
 
/* Ensure header stays above page content so nav links are clickable */
.main-header {
    position: relative;
    z-index: 50;
}
.header-container {
    background-color: #ffffff;
    border-radius: 10px; 
    padding: 10px 15px;
    
    display: flex;            
    align-items: center;      
    justify-content: space-between; 
    
    width: 100%;
    max-width: 1300px;       
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    gap: 20px;             
}

.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0; 
}

.logo-image {
    width: 50px; 
    height: auto; 
    display: block;
}

.nav-menu {
    display: flex;
    gap: 75px; 
    flex-wrap: wrap; 
    justify-content: center;
}

.nav-link {
    text-decoration: none;
    color: #333;
    background-color: #f8f9fa; 
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap; 
    transition: 0.2s;
}

.nav-link:hover {
    background-color: #e2e6ea;
}

.header-action {
    flex-shrink: 0; 
}

.btn-submit {
    text-decoration: none;
    background-color: #17a2b8; 
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    white-space: nowrap;
}

.btn-submit:hover {
    background-color: #138496;
}

.hero-section {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://img.freepik.com/free-photo/abstract-network-connection-background_23-2148875794.jpg'); 
    background-size: cover;
    background-position: center;
    color: white;
    padding-top: 80px; 
    padding-bottom: 50px; 
    margin-top: 20px; 
    display: flex;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 1300px;
    padding: 0 15px;
    margin: 0 auto;
}

.hero-content {
    max-width: 800px;
    margin-bottom: 60px; 
}

.hero-content h1 {
    font-size: 32px;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 16px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-hero {
    display: inline-block;
    background-color: #17a2b8;
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
    border-radius: 4px;
    transition: 0.3s;
}

.btn-hero:hover {
    background-color: #138496;
}

.features-grid {
    display: flex;
    gap: 20px; 
    flex-wrap: wrap; 
}

.feature-card {
    flex: 1; 
    background-color: #17a2b8; 
    padding: 20px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 15px;
    min-width: 250px; 
}

.icon-box {
    font-size: 30px; 
}

.card-text {
    font-size: 14px;
    line-height: 1.4;
    font-weight: 500;
}

.tariffs-section {
    background-color: #ffffff;
    padding: 60px 0;
    text-align: center;
}

.section-title {
    text-align: center;
    color: #333;
    font-size: 24px;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 50px;
}

.tariffs-grid {
    display: flex;
    justify-content: center;
    gap: 40px; 
    flex-wrap: wrap;
}

.tariff-card {
    width: 220px;
    position: relative;
    filter: drop-shadow(0 10px 10px rgba(0,0,0,0.15));
}

.tariff-header {
    background-color: #008b9e;
    color: white;
    padding: 20px 10px 40px 10px; 
    clip-path: polygon(0 0, 100% 0, 100% 85%, 50% 100%, 0 85%);
    position: relative;
    z-index: 2; 
}

.tariff-name {
    text-transform: uppercase;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 5px;
}

.tariff-speed {
    font-size: 14px;
}

.tariff-speed span {
    font-size: 28px; 
    font-weight: 700;
}

.tariff-body {
    background: linear-gradient(to bottom, #ffffff, #f0f0f0);
    color: #008b9e;
    padding-top: 30px;
    padding-bottom: 20px;
    margin-top: -30px;
    position: relative;
    z-index: 1;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 40px;
}

.tariff-price {
    font-size: 32px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 5px;
}

.tariff-currency {
    font-size: 16px;
    font-weight: 600;
    color: #555;
    text-transform: uppercase;
}

.advantages-section {
    background-color: #ffffff;
    padding: 60px 0;
}

.text-left {
    text-align: left !important; 
    margin-bottom: 40px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; 
    gap: 40px; 
}

.advantage-item {
    display: flex;
    align-items: center; 
    gap: 20px; 
}

.adv-icon {
    font-size: 40px;
    color: #17a2b8;   
    flex-shrink: 0; 
    width: 60px;
    text-align: center;
}

.adv-text {
    font-size: 16px;
    color: #555;
    font-weight: 500;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .advantages-grid {
        grid-template-columns: 1fr; 
    }
}

.services-section {
    background-color: #f9f9f9;
    padding: 40px 0 80px 0;
}

.channels-header {
    font-weight: 800;
    font-size: 18px;
    text-transform: uppercase;
    color: #333;
    cursor: pointer;
    margin-bottom: 20px;
}

.arrow-icon {
    font-size: 12px;
    margin-right: 10px;
    vertical-align: middle;
}

.section-divider {
    border: none;
    border-top: 1px solid #e0e0e0;
    margin-bottom: 40px;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; 
    gap: 30px 60px; 
}

.service-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.service-icon {
    font-size: 28px; 
    min-width: 40px; 
    text-align: center;
}

.service-text {
    font-size: 15px;
    color: #555;
    line-height: 1.4;
    padding-top: 5px;
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr; 
        gap: 20px;
    }
}

.documents-section {
    background-color: #ffffff; 
    padding: 60px 0;
}

/* Новости */
.news-section {
    background-color: #ffffff;
    padding: 60px 0;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.news-item {
    background-color: #ffffff;
    border-radius: 8px;
    padding: 18px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
    text-align: left;
}

.news-meta {
    margin-bottom: 6px;
}

.news-date {
    font-size: 12px;
    color: #888;
}

.news-title {
    font-size: 16px;
    margin: 6px 0 8px 0;
}

.news-title a {
    color: #008b9e;
    text-decoration: none;
    font-weight: 600;
}

.news-title a:hover {
    text-decoration: underline;
}

.news-excerpt {
    color: #555;
    font-size: 14px;
    line-height: 1.4;
}

.news-actions { text-align: center; margin-top: 20px; }

@media (max-width: 900px) {
    .news-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .news-list { grid-template-columns: 1fr; }
}

.documents-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.doc-item {
    display: flex;
    align-items: flex-start; 
    gap: 15px;
}

.doc-icon-box {
    position: relative;
    font-size: 40px; 
    line-height: 1;
}

.pdf-badge {
    position: absolute;
    bottom: 5px;
    right: -5px;
    background-color: #e74c3c; 
    color: white;
    font-size: 10px;
    font-weight: bold;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: Arial, sans-serif;
}

.doc-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 5px;
}

.doc-title {
    font-size: 14px;
    color: #555;
    font-weight: 500;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.doc-link {
    color: #e74c3c; 
    font-size: 14px;
    text-decoration: underline; 
}

.doc-link:hover {
    text-decoration: none; 
}

@media (max-width: 768px) {
    .documents-grid {
        grid-template-columns: 1fr;
    }
}

.contact-section {
    padding: 60px 0;
    background-color: #ffffff;
}

.contact-wrapper {
    display: flex;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1); 
    border-radius: 10px;
    overflow: hidden; 
    background-color: white;
}

.contact-left {
    flex: 1; 
    background-color: #008b9e; 
    color: white;
    position: relative;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 400px;
}

.contact-text-block {
    position: relative;
    z-index: 2; 
}

.contact-left h3 {
    font-size: 24px;
    text-transform: uppercase;
    margin-bottom: 10px;
    font-weight: 800;
}

.contact-subtitle {
    font-size: 14px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.phones-list div {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.operator-img {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 80%;
    max-width: 350px;
    object-fit: cover;
    z-index: 1;
    mask-image: linear-gradient(to left, rgba(0,0,0,1), rgba(0,0,0,0));
    -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1), rgba(0,0,0,0));
}

.contact-right {
    flex: 1; 
    padding: 50px;
    background-color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-right h4 {
    font-size: 18px;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.form-input {
    width: 100%;
    padding: 15px;
    margin-bottom: 15px;
    border: none;
    background-color: #f4f6f8;
    border-radius: 5px;
    font-size: 14px;
    color: #333;
    font-family: inherit;
    box-sizing: border-box; 
}

.select-wrapper select {
    appearance: none; 
    -webkit-appearance: none;
    cursor: pointer;
}

.btn-submit-form {
    width: 100%;
    padding: 15px;
    background-color: #008b9e;
    color: white;
    border: none;
    border-radius: 5px;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    font-size: 14px;
    margin-top: 10px;
    transition: 0.3s;
}

.btn-submit-form:hover {
    background-color: #007282;
}

.main-footer {
    background-color: #ffffff;
    padding: 40px 0;
    border-top: 1px solid #eee;
    text-align: center; 
}

.footer-title {
    font-size: 18px;
    text-transform: uppercase;
    font-weight: 800;
    color: #333;
    margin-bottom: 30px;
    display: block; 
    text-align: center;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
    justify-content: center;
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #444;
    font-size: 15px;
}

.f-icon {
    font-size: 20px;
    color: #008b9e;
}

.f-icon-svg {
    stroke: #008b9e;
}

@media (max-width: 900px) {
    .contact-wrapper {
        flex-direction: column;
    }
    .contact-left {
        min-height: 300px;
        padding-bottom: 0;
    }
    .operator-img {
        position: relative;
        width: 100%;
        margin-top: 20px;
    }
    .footer-grid {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}

/* Simple Assistant widget styles */
.assistant-btn {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg,#17a2b8,#008b9e);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
    z-index: 2000;
}

.assistant-backdrop {
    position: fixed;
    inset: 0;
    display: none;
    align-items: flex-end; /* default: bottom */
    justify-content: flex-end; /* default: right */
    z-index: 2000;
}
.assistant-backdrop.open { display: flex; }

.assistant-backdrop.right { background: transparent; }
.assistant-backdrop:not(.right) { background: rgba(0,0,0,0.45); align-items:center; justify-content:center; }

.assistant-modal {
    width: 360px;
    max-width: calc(100% - 40px);
    max-height: 80vh;
    height: 60vh; /* give modal a stable height so body can scroll */
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.assistant-widget {
    /* widget becomes modal content */
    position: relative !important;
    right: auto !important;
    bottom: auto !important;
    width: 100%;
    max-height: 100%;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    z-index: 0;
    font-family: inherit;
}

/* animations */
.assistant-backdrop.open .assistant-modal {
    animation: assistantScaleIn 220ms ease both;
}
@keyframes assistantScaleIn {
    from { transform: translateY(10px) scale(.98); opacity: 0; }
    to   { transform: translateY(0) scale(1); opacity: 1; }
}

/* position right variant */
.assistant-backdrop.right { align-items: flex-end; justify-content: flex-end; }
.assistant-backdrop.right .assistant-modal { margin: 20px; }

/* header controls */
.assistant-header { padding: 12px 14px; background: #008b9e; color: #fff; font-weight: 700; display:flex; align-items:center; justify-content:space-between; gap:8px; }
.assistant-header .controls { display:flex; gap:8px; align-items:center; }
.assistant-control-btn { background: rgba(255,255,255,0.12); border: none; color: #fff; padding:6px 8px; border-radius:6px; cursor:pointer; font-size:13px; }
.assistant-control-btn:hover{ background: rgba(255,255,255,0.18); }

.assistant-body { padding: 10px; overflow-y: auto; overflow-x: hidden; -webkit-overflow-scrolling: touch; flex: 1; display:flex; flex-direction:column; gap:8px; }
.assistant-message { padding: 8px 10px; border-radius: 8px; margin-bottom: 8px; max-width: 100%; }
.assistant-message.user { background:#e6f7f7; align-self:flex-end; }
.assistant-message.bot { background:#f7f9fa; color:#333; align-self:flex-start; }

.assistant-input { border-top: 1px solid #eee; padding: 8px; display: flex; gap: 8px; }
.assistant-input input { flex: 1; padding: 8px 10px; border-radius: 6px; border: 1px solid #ddd; }

.assistant-header { padding: 12px 14px; background: #008b9e; color: #fff; font-weight: 700; }
.assistant-body { padding: 10px; overflow: auto; flex: 1; }
.assistant-input { border-top: 1px solid #eee; padding: 8px; display: flex; gap: 8px; }
.assistant-input input { flex: 1; padding: 8px 10px; border-radius: 6px; border: 1px solid #ddd; }
.assistant-suggestion { padding: 8px; border-radius: 6px; background: #f7f9fa; margin-bottom: 8px; cursor: pointer; }
.assistant-suggestion a { color: #008b9e; text-decoration: none; font-weight: 600; }

.assistant-small { font-size: 13px; color: #666; }

/* Add top offset so anchored sections are visible below fixed header */
.tariffs-section, .advantages-section, .services-section, .documents-section, .news-section {
    scroll-margin-top: 100px;
}