/* MTT modern layout layer — loaded after template_styles.css */

:root {
  --mtt-primary: #0095d4;
  --mtt-primary-hover: #007ab0;
  --mtt-primary-light: #e8f6fc;
  --mtt-text: #1e2a32;
  --mtt-text-muted: #5a6b75;
  --mtt-bg: #f4f7f9;
  --mtt-surface: #ffffff;
  --mtt-border: #d8e2e8;
  --mtt-radius: 10px;
  --mtt-shadow: 0 2px 12px rgba(15, 35, 52, 0.08);
  --mtt-header-h: auto;
  --mtt-max-width: 1280px;
  --mtt-focus: #0095d4;
  --mtt-transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--mtt-bg);
  color: var(--mtt-text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

*:focus {
  outline: none !important;
}

*:focus-visible {
  outline: 2px solid var(--mtt-focus) !important;
  outline-offset: 2px !important;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 10000;
  padding: 0.6rem 1rem;
  background: var(--mtt-primary);
  color: #fff;
  border-radius: var(--mtt-radius);
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

#wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#content {
  flex: 1;
  padding-bottom: 2rem;
}

.container,
.container.simpage,
.catalog_block .container {
  max-width: var(--mtt-max-width);
}

/* Header */
#header {
  background: var(--mtt-surface);
  box-shadow: var(--mtt-shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

#header .navbar.navbar-inverse {
  background: var(--mtt-surface) !important;
  border: none;
  margin-bottom: 0;
  min-height: auto;
}

#header .navbar-brand {
  color: var(--mtt-text-muted) !important;
  font-size: 0.85rem;
  font-weight: 400;
  padding: 1rem 0;
}

#header .navbar-middle {
  background-size: contain;
  margin: 1rem 0;
}

#header .navbar-right .nav > li {
  display: flex;
  align-items: center;
}

#header .search_block input[type="search"] {
  border: 1px solid var(--mtt-border);
  border-radius: var(--mtt-radius);
  padding: 0.45rem 0.75rem;
  min-width: 140px;
  background: var(--mtt-bg);
  transition: border-color var(--mtt-transition);
}

#header .search_block input[type="search"]:focus {
  border-color: var(--mtt-primary);
  background: var(--mtt-surface);
}

#header .search_block input[type="submit"] {
  border: 1px solid var(--mtt-primary);
  background: var(--mtt-primary);
  color: #fff;
  border-radius: var(--mtt-radius);
  padding: 0.45rem 1rem;
  margin-left: 0.35rem;
  cursor: pointer;
  transition: background var(--mtt-transition);
}

#header .search_block input[type="submit"]:hover {
  background: var(--mtt-primary-hover);
  border-color: var(--mtt-primary-hover);
}

#header #site_selector,
#header .jq-selectbox__select {
  color: var(--mtt-primary) !important;
  font-weight: 600;
}

#header a {
  color: var(--mtt-primary);
  font-weight: 500;
}

#header a:hover {
  color: var(--mtt-primary-hover);
}

/* Sub navigation */
.sub_navi {
  background: var(--mtt-bg);
  border-top: 1px solid var(--mtt-border);
  border-bottom: 1px solid var(--mtt-border);
}

.sub_navi .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.sub_navi .left_ul,
.sub_navi .ta_r {
  width: auto !important;
  float: none !important;
  text-align: left !important;
}

.sub_navi ul {
  margin: 0 !important;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}

.sub_navi li {
  margin: 0 !important;
}

.sub_navi li a {
  display: inline-block;
  padding: 0.35rem 0;
  color: var(--mtt-text);
  font-weight: 500 !important;
  border-bottom: 2px solid transparent;
  transition: color var(--mtt-transition), border-color var(--mtt-transition);
}

.sub_navi li a:hover,
.sub_navi li.active a {
  color: var(--mtt-primary) !important;
  border-bottom-color: var(--mtt-primary);
}

.mtt-nav-toggle {
  display: none;
  width: 100%;
  margin: 0.5rem 0;
  padding: 0.65rem 1rem;
  background: var(--mtt-surface);
  border: 1px solid var(--mtt-border);
  border-radius: var(--mtt-radius);
  color: var(--mtt-text);
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.mtt-nav-toggle::after {
  content: " ▾";
  float: right;
}

.mtt-nav-toggle[aria-expanded="true"]::after {
  content: " ▴";
}

/* Typography */
h1, .h1 {
  font-weight: 300 !important;
  color: var(--mtt-text);
  line-height: 1.2 !important;
  letter-spacing: -0.02em;
}

h2, .h2, .subsection_item {
  font-weight: 400 !important;
  color: var(--mtt-text);
}

h3, .h3 {
  font-weight: 600 !important;
}

h3 a {
  color: var(--mtt-primary);
  text-decoration: none;
}

h3 a:hover {
  color: var(--mtt-primary-hover);
  text-decoration: underline;
}

.simpage,
.catalog_block {
  padding-top: 1.5rem;
}

/* Catalog product cards */
.catalog_block .row {
  display: grid !important;
  grid-template-columns: minmax(160px, 1fr) minmax(260px, 2fr) minmax(130px, auto);
  gap: 1.25rem 2rem;
  align-items: start;
  margin: 0 0 1.5rem !important;
  padding: 1.5rem;
  background: var(--mtt-surface);
  border: 1px solid var(--mtt-border);
  border-radius: var(--mtt-radius);
  box-shadow: var(--mtt-shadow);
  overflow: visible !important;
  clear: both;
}

.catalog_block .row::after,
.catalog_block .row::before {
  display: none !important;
}

.catalog_block .row > [class*="col-"] {
  float: none !important;
  width: 100% !important;
  max-width: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
  position: static !important;
  min-height: 0 !important;
}

.catalog_block .row > .text-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.catalog_block .col-lg-4 img,
.catalog_block .col-md-6 img,
.catalog_block .col-sm-6 img {
  max-width: 100%;
  max-height: 280px;
  width: auto;
  height: auto;
  object-fit: contain;
  margin: 0 auto;
  display: block;
}

.catalog_block dl dd {
  color: var(--mtt-text-muted);
  line-height: 1.65;
  margin: 0;
  overflow-wrap: anywhere;
}

.catalog_block dd table {
  display: block;
  margin: 1rem 0 0;
  width: auto !important;
  text-align: left !important;
}

.catalog_block dd table img {
  max-width: 48px;
  max-height: 48px;
  vertical-align: middle;
}

.catalog_block dd div + div {
  margin-top: 0.5rem;
}

.catalog_block .last {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0.75rem;
}

.catalog_block .btn-lg,
.btn.btn-lg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  padding: 0.75rem 1.5rem !important;
  border: 2px solid var(--mtt-primary) !important;
  border-radius: var(--mtt-radius) !important;
  background: transparent !important;
  color: var(--mtt-primary) !important;
  font-weight: 600 !important;
  font-size: 1rem !important;
  line-height: 1.2 !important;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--mtt-transition), color var(--mtt-transition);
}

.catalog_block .btn-lg:hover,
.btn.btn-lg:hover {
  background: var(--mtt-primary) !important;
  color: #fff !important;
}

.catalog_block h2.subsection_item {
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--mtt-primary-light);
}

/* Homepage feature grid */
.differences {
  margin: 2rem 0 1rem;
}

.differences h2 {
  margin-bottom: 1.75rem !important;
}

.differences .row {
  display: flex;
  flex-wrap: wrap;
  margin-left: -0.75rem;
  margin-right: -0.75rem;
}

.differences .col-md-6 {
  display: grid;
  grid-template-columns: 136px 1fr;
  grid-template-rows: auto auto;
  gap: 0.35rem 1.25rem;
  align-items: start;
  background: var(--mtt-surface);
  border: 1px solid var(--mtt-border);
  border-radius: var(--mtt-radius);
  padding: 1.25rem !important;
  margin: 0 0 1.25rem !important;
  min-height: auto !important;
  box-shadow: var(--mtt-shadow);
  transition: border-color var(--mtt-transition), box-shadow var(--mtt-transition);
  float: none !important;
  width: calc(50% - 1.5rem) !important;
  margin-left: 0.75rem !important;
  margin-right: 0.75rem !important;
}

.differences .col-md-6:hover {
  border-color: var(--mtt-primary);
  box-shadow: 0 4px 20px rgba(0, 149, 212, 0.12);
}

.differences .col-md-6 > a {
  display: contents;
  color: inherit;
  text-decoration: none;
}

.differences .col-md-6 .icon {
  position: static !important;
  left: auto !important;
  top: auto !important;
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: start;
  justify-self: center;
  margin: 0 !important;
  flex-shrink: 0;
}

.differences .col-md-6 h4 {
  grid-column: 2;
  grid-row: 1;
  padding: 0 !important;
  margin: 0 0 0.35rem !important;
  font-weight: 600 !important;
  line-height: 1.3 !important;
}

.differences .col-md-6 p {
  grid-column: 2;
  grid-row: 2;
  padding: 0 !important;
  margin: 0 !important;
  color: var(--mtt-text-muted);
  line-height: 1.55 !important;
}

.differences .col-md-6 a {
  color: var(--mtt-text);
  text-decoration: none;
}

.differences .col-md-6 a:hover h4,
.differences .col-md-6 h4 a:hover {
  color: var(--mtt-primary);
}

@media (max-width: 991px) {
  .differences .col-md-6 {
    width: 100% !important;
    grid-template-columns: 96px 1fr;
  }

  .differences .col-md-6 .icon {
    width: 96px !important;
    height: 96px !important;
    background-size: 96px auto !important;
  }

  .differences .col-md-6.voice .icon { background-position: 0 0 !important; }
  .differences .col-md-6.ip .icon { background-position: 0 -96px !important; }
  .differences .col-md-6.byod .icon { background-position: 0 -192px !important; }
  .differences .col-md-6.keys .icon { background-position: 0 -288px !important; }
  .differences .col-md-6.post .icon { background-position: 0 -384px !important; }
  .differences .col-md-6.disk .icon { background-position: 0 -480px !important; }
  .differences .col-md-6.chat .icon { background-position: 0 -576px !important; }
  .differences .col-md-6.conf .icon { background-position: 0 -672px !important; }
  .differences .col-md-6.hider .icon { background-position: 0 -768px !important; }
  .differences .col-md-6.file .icon { background-position: 0 -864px !important; }
}

.support_block {
  border-radius: var(--mtt-radius);
  margin: 2rem 0;
}

/* Carousel */
.carousel {
  border-radius: var(--mtt-radius);
  overflow: hidden;
  box-shadow: var(--mtt-shadow);
}

.carousel .item img {
  border-radius: var(--mtt-radius);
}

.carousel-caption {
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

/* Forms */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="search"],
input[type="password"],
textarea,
select {
  border: 1px solid var(--mtt-border) !important;
  border-radius: var(--mtt-radius) !important;
  padding: 0.55rem 0.75rem !important;
  background: var(--mtt-surface) !important;
  transition: border-color var(--mtt-transition);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--mtt-primary) !important;
}

.question_block {
  background: linear-gradient(135deg, #007ab0 0%, #0095d4 100%);
  border-radius: var(--mtt-radius);
  margin-top: 2rem;
}

.modal-content {
  border-radius: var(--mtt-radius);
  border: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

/* Support pages */
.support_page .question_block,
.support_block {
  border-radius: var(--mtt-radius);
}

.support_page a {
  word-break: break-word;
}

/* Footer */
#footer {
  background: #2c3e47 !important;
  border-top: none;
  margin-top: 0;
  padding: 3rem 0 2rem;
}

#footer li.main,
#footer h5.main {
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

#footer .search_block input[type="search"] {
  border-radius: var(--mtt-radius);
  border: 1px solid #4a5d68;
  background: #3a4d57;
  color: #fff;
  padding: 0.5rem 0.75rem;
}

#footer .search_block input[type="submit"] {
  border-radius: var(--mtt-radius);
  background: var(--mtt-primary);
  border: none;
  color: #fff;
  padding: 0.5rem 1rem;
  margin-left: 0.35rem;
  cursor: pointer;
}

#footer .bottom_block {
  border-top: 1px solid #4a5d68;
  margin-top: 2rem;
  padding-top: 1.5rem;
}

#footer .inf .copy {
  color: #a8b8c0;
}

/* Utility */
.clear,
.clearfix {
  display: none;
}

img {
  max-width: 100%;
  height: auto;
}

table {
  max-width: 100%;
}

a {
  transition: color var(--mtt-transition);
}

/* Responsive */
@media (max-width: 991px) {
  .catalog_block .row {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .catalog_block .row > .text-center {
    justify-content: flex-start;
  }

  .catalog_block .last {
    align-items: stretch;
  }

  .catalog_block .btn-lg {
    width: 100%;
  }
}

@media (max-width: 767px) {
  .mtt-nav-toggle {
    display: block;
  }

  .sub_navi .container.mtt-nav-collapsed .left_ul,
  .sub_navi .container.mtt-nav-collapsed .ta_r {
    display: none;
  }

  .sub_navi .container:not(.mtt-nav-collapsed) .left_ul,
  .sub_navi .container:not(.mtt-nav-collapsed) .ta_r {
    width: 100% !important;
  }

  .sub_navi ul {
    flex-direction: column;
    gap: 0.15rem;
  }

  .sub_navi li a {
    padding: 0.5rem 0;
    width: 100%;
  }

  #header .search_block input[type="search"] {
    min-width: 100px;
    max-width: 160px;
  }

  h1, .h1 {
    font-size: 1.75rem !important;
    line-height: 1.25 !important;
    margin-bottom: 1.5rem !important;
  }

  #footer .col-lg-3,
  #footer .col-md-3,
  #footer .col-sm-6 {
    margin-bottom: 1.5rem;
  }
}

@media (min-width: 768px) {
  .sub_navi .container {
    flex-wrap: nowrap;
  }
}