/* === BLUEPRINT ENGINEERING THEME === */
/* Общие стили для всех страниц: главная, библиотека, кабинет, панель менеджера. */

:root {
  --bg: #f2f5fa;
  --panel: #ffffff;
  --line: #cfd8e6;
  --line-strong: #9cb0cc;
  --text: #0b1d3a;
  --muted: #5b6b82;
  --navy: #0b3d91;
  --navy-dark: #082c6b;
  --cyan: #0ea5e9;
  --cyan-soft: #e0f2fe;
  --success: #047857;
  --warning: #b45309;
  --danger: #b91c1c;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
img, video, canvas, svg { max-width: 100%; height: auto; }

/*
 * Sticky footer: grid row 1fr needs a definite height on the grid container.
 * Only min-height on body leaves height "auto" → 1fr collapses and the footer
 * sits under the content with empty background below (see library.html).
 */
html {
  height: 100%;
}

body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background:
    linear-gradient(var(--bg), var(--bg)),
    repeating-linear-gradient(0deg, rgba(11,61,145,.05) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, rgba(11,61,145,.05) 0 1px, transparent 1px 40px);
  background-blend-mode: normal, multiply, multiply;
  color: var(--text);
  line-height: 1.55;
  min-height: 100%;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

/* Средняя зона grid: шапка и подвал — auto, контент забирает оставшуюся высоту окна */
.page-main {
  min-width: 0;
  min-height: 0;
}

.mono { font-family: 'JetBrains Mono', 'Consolas', 'Courier New', monospace; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--cyan); }

/* === HEADER === */
header.top {
  background: #fff;
  border-bottom: 2px solid var(--navy);
  position: sticky; top: 0; z-index: 40;
}
.top-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 16px; flex-wrap: wrap;
}
.logo-link {
  display: flex; align-items: center; text-decoration: none; color: inherit;
}
.logo-link:hover { color: inherit; }
.logo-link:hover .logo h1 { color: var(--navy); }
.logo { display: flex; align-items: center; gap: 12px; }
.logo .mark {
  width: 42px; height: 42px; border-radius: 4px;
  background: var(--navy); color: #fff; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: .5px; position: relative;
  font-size: 11px;
}
.logo .mark::after {
  content: ''; position: absolute; inset: 3px;
  border: 1px solid rgba(255,255,255,.35); border-radius: 2px;
}
.logo h1 { font-size: 17px; font-weight: 700; }
.logo small {
  font-size: 11px; color: var(--muted); display: block;
  text-transform: uppercase; letter-spacing: 1.5px;
}
nav ul { list-style: none; display: flex; gap: 24px; flex-wrap: wrap; }
nav a {
  color: var(--text); font-weight: 600; font-size: 13px;
  text-transform: uppercase; letter-spacing: 1px;
}
nav a:hover { color: var(--navy); }
.site-nav-link {
  display: inline-block; padding: 4px 2px; border-bottom: 3px solid transparent;
  margin-bottom: -2px; transition: border-color .15s, color .15s;
}
.site-nav-link:hover { border-bottom-color: var(--line-strong); }
.site-nav-link.active {
  color: var(--navy); border-bottom-color: var(--cyan);
  font-weight: 700;
}
.site-nav-label {
  cursor: default;
  user-select: none;
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.has-submenu:hover > .site-nav-label {
  color: var(--navy);
}
.mobile-menu-toggle {
  display: none;
}
.has-submenu { position: relative; }
.has-submenu > .site-nav-link::after {
  content: '▾'; margin-left: 6px; font-size: 10px; color: var(--muted);
  transition: color .15s, transform .15s;
}
.has-submenu:hover > .site-nav-link::after,
.has-submenu:focus-within > .site-nav-link::after {
  color: var(--navy); transform: translateY(1px);
}
.submenu {
  position: absolute; left: 0; top: 100%;
  margin: 0; padding: 8px 0; min-width: 220px;
  background: #fff; border: 1px solid var(--line-strong);
  border-top: 3px solid var(--cyan);
  border-radius: 0 0 6px 6px;
  box-shadow: 0 8px 24px rgba(11,29,58,.12);
  list-style: none; display: none; flex-direction: column; gap: 0;
  z-index: 50;
}
.submenu li { display: block; }
.submenu a {
  display: block; padding: 10px 16px;
  font-size: 12px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--text); font-weight: 600;
  white-space: nowrap; border-bottom: none;
  transition: background .15s, color .15s;
}
.submenu a:hover {
  background: var(--cyan-soft); color: var(--navy);
}
.has-submenu:hover > .submenu,
.has-submenu:focus-within > .submenu {
  display: flex;
}
@media (max-width: 720px) {
  .submenu {
    position: static; box-shadow: none; border: none;
    border-left: 2px solid var(--cyan-soft);
    margin: 4px 0 8px 14px; padding: 4px 0;
    border-radius: 0; min-width: 0;
  }
  .has-submenu > .site-nav-link::after { content: ''; }
}
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* === BUTTONS === */
.btn {
  font-size: 13px; padding: 10px 16px; border-radius: 4px;
  border: 1.5px solid transparent; cursor: pointer; font-weight: 600;
  letter-spacing: .3px; text-transform: uppercase; transition: .15s;
  font-family: inherit;
}
.btn.ghost { background: #fff; border-color: var(--line-strong); color: var(--text); }
.btn.ghost:hover { border-color: var(--navy); color: var(--navy); }
.btn.primary { background: var(--navy); color: #fff; }
.btn.primary:hover { background: var(--navy-dark); }
.btn.cyan { background: var(--cyan); color: #fff; }
.btn.cyan:hover { background: #0284c7; }
.btn.call {
  background: #fff; border-color: var(--cyan); color: var(--navy);
  text-decoration: none; display: inline-flex; align-items: center;
}
.btn.call:hover { background: var(--cyan-soft); }
.btn[disabled] { opacity: .6; cursor: not-allowed; }

/* === HERO === */
.hero { padding: 60px 0 48px; position: relative; }
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 1fr;
  gap: 48px; align-items: start;
}
@media (max-width: 1000px) { .hero-grid { grid-template-columns: 1fr; } }

.tech-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--line-strong);
  padding: 5px 10px; border-radius: 4px;
  font-size: 12px; font-weight: 600; color: var(--navy);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px;
}
.tech-tag .dot {
  width: 8px; height: 8px; background: var(--cyan); border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(14,165,233,.25);
}
.hero h2 {
  font-size: 42px; line-height: 1.12; font-weight: 800;
  margin-bottom: 18px; letter-spacing: -.01em;
}
.hero h2 span {
  color: var(--navy); border-bottom: 3px solid var(--cyan); padding-bottom: 2px;
}
.hero p.lead {
  color: var(--muted); font-size: 16px; margin-bottom: 24px; max-width: 540px;
}
.spec-list {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; max-width: 540px;
}
.spec {
  background: #fff; border: 1px solid var(--line); border-radius: 4px;
  padding: 12px 14px; position: relative;
}
.spec::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--cyan);
}
.spec b { font-size: 18px; font-weight: 700; color: var(--navy); display: block; }
.spec span {
  font-size: 11px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 1px;
}

/* === CALCULATOR PANEL === */
.calc {
  background: #fff; border: 1px solid var(--line-strong); border-radius: 6px;
  padding: 24px; box-shadow: 0 6px 24px rgba(11,29,58,.08);
  position: relative;
}
.calc .label-top {
  position: absolute; top: -11px; left: 18px; background: #fff;
  padding: 0 10px; font-size: 11px; font-weight: 700; color: var(--navy);
  letter-spacing: 2px; text-transform: uppercase;
}
.calc h3 { font-size: 18px; margin-bottom: 2px; }
.calc .sub { color: var(--muted); font-size: 13px; margin-bottom: 18px; }

.field { margin-bottom: 12px; }
.field label {
  display: block; font-size: 11px; text-transform: uppercase;
  letter-spacing: 1px; color: var(--muted); margin-bottom: 5px; font-weight: 600;
}
.input, select, textarea {
  width: 100%; padding: 10px 12px; background: #fff;
  border: 1px solid var(--line-strong); border-radius: 4px;
  color: var(--text); font-size: 14px; font-family: inherit;
}
.input:focus, select:focus, textarea:focus {
  border-color: var(--cyan); outline: 2px solid var(--cyan-soft);
}
textarea { min-height: 80px; resize: vertical; }
.three { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }

.result {
  margin-top: 16px; border: 1px dashed var(--navy);
  padding: 14px; border-radius: 4px; background: #fafcff;
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.result div span {
  font-size: 10px; color: var(--muted); display: block;
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 2px;
}
.result div b { font-size: 18px; font-weight: 700; }
.result div b.price { color: var(--navy); font-size: 22px; }
.actions-calc { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; align-items: stretch; }
.actions-calc .btn { text-align: center; display: inline-flex; align-items: center; justify-content: center; box-sizing: border-box; }
.actions-calc a.btn { text-decoration: none; }
.actions-calc.single { grid-template-columns: 1fr; }
.actions-calc.single .btn { width: 100%; }
.note { font-size: 12px; color: var(--muted); text-align: center; margin-top: 10px; }

/* === SECTIONS === */
section.block { padding: 56px 0; position: relative; }
.block-head {
  margin-bottom: 28px; display: flex; align-items: end;
  justify-content: space-between; gap: 18px; flex-wrap: wrap;
  border-bottom: 2px solid var(--navy); padding-bottom: 10px;
}
.block-head h2 { font-size: 26px; font-weight: 800; letter-spacing: -.01em; }
.block-head .code {
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 2px;
}

/* === LIBRARY CARDS === */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 268px), 320px));
  gap: 24px;
  justify-content: center;
  width: 100%;
}
.cards .sol {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}
.cards .sol .btn {
  margin-top: auto;
}
.sol {
  background: #fff; border: 1px solid var(--line-strong); border-radius: 4px;
  padding: 18px; transition: .2s; position: relative;
}
.sol::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--cyan); border-radius: 4px 0 0 4px;
}
.sol:hover { box-shadow: 0 6px 18px rgba(11,29,58,.1); }
.sol .code-tag {
  font-size: 11px; color: var(--navy); font-weight: 700;
  letter-spacing: 2px; margin-bottom: 8px;
}
.solution-cover {
  display: block;
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  background: #f5f8fc;
}
.sol h4 { font-size: 16px; margin-bottom: 6px; }
.sol p { color: var(--muted); font-size: 13px; min-height: 40px; margin-bottom: 12px; }
.sol .specs {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 10px; background: #f5f8fc; border: 1px solid var(--line);
  border-radius: 4px; margin-bottom: 12px; font-size: 12px;
}
.sol .specs .price { color: var(--navy); font-weight: 700; }
.sol .btn { width: 100%; }

/* === TABLE PANEL === */
.panel-box {
  background: #fff; border: 1px solid var(--line-strong); border-radius: 4px;
  overflow: hidden;
}
.panel-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 18px; background: var(--navy); color: #fff; gap: 12px; flex-wrap: wrap;
}
.panel-head h3 {
  font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px;
}
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  font-size: 11px; padding: 3px 10px; border-radius: 2px;
  background: rgba(255,255,255,.1); color: #fff; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase;
  border: 1px solid rgba(255,255,255,.2);
}
.chip.active { background: var(--cyan); border-color: var(--cyan); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td {
  padding: 11px 16px; text-align: left;
  border-bottom: 1px solid var(--line); vertical-align: top;
}
th {
  background: #f5f8fc; color: var(--muted); font-weight: 700;
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
}
tr:last-child td { border-bottom: none; }

.status {
  display: inline-block; font-size: 11px; padding: 3px 8px;
  border-radius: 2px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
}
.status.new { background: var(--cyan-soft); color: var(--cyan); }
.status.progress, .status.in_progress { background: #fff4e0; color: var(--warning); }
.status.quoted { background: #ede9fe; color: #6d28d9; }
.status.done { background: #e0f2ea; color: var(--success); }
.status.cancel, .status.cancelled { background: #fde2e2; color: var(--danger); }
td.sm { color: var(--muted); font-size: 12px; }
select.mini { padding: 5px 8px; font-size: 12px; border-radius: 3px; }
.num { color: var(--navy); font-weight: 700; }

/* === ADMIN LAYOUT === */
.admin-page {
  padding-top: 28px;
}
.admin-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}
.admin-sidebar {
  position: sticky;
  top: 88px;
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 12px;
  box-shadow: 0 6px 18px rgba(11,29,58,.08);
}
.admin-sidebar-title {
  padding: 8px 10px 12px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.admin-nav-btn {
  width: 100%;
  display: block;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  border-radius: 4px;
  padding: 12px 10px;
  cursor: pointer;
  font-family: inherit;
  transition: .15s;
}
.admin-nav-btn + .admin-nav-btn {
  margin-top: 6px;
}
.admin-nav-btn span {
  display: block;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.admin-nav-btn small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}
.admin-nav-btn:hover {
  background: #f5f8fc;
  border-color: var(--line);
}
.admin-nav-btn.active {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}
.admin-nav-btn.active small {
  color: rgba(255,255,255,.75);
}
.admin-content {
  min-width: 0;
}
.admin-section {
  display: none;
}
.admin-section.active {
  display: block;
}
.admin-section-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 20px 22px;
  margin-bottom: 18px;
}
.admin-section-head h3 {
  font-size: 24px;
  margin-bottom: 4px;
}
.admin-section-head p {
  color: var(--muted);
  font-size: 14px;
}
.admin-kicker {
  display: inline-block;
  margin-bottom: 6px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.admin-actions-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.admin-action-card {
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  padding: 20px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.admin-action-card h4 {
  font-size: 18px;
}
.admin-action-card p {
  color: var(--muted);
  font-size: 14px;
}
.admin-action-card .btn {
  margin-top: auto;
  align-self: flex-start;
}
@media (max-width: 900px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }
  .admin-sidebar {
    position: static;
  }
  .admin-actions-grid {
    grid-template-columns: 1fr;
  }
}

/* === MODAL === */
.modal-bg {
  display: none; position: fixed; inset: 0;
  background: rgba(11,29,58,.55); z-index: 2000;
  align-items: center; justify-content: center; padding: 16px;
}
.modal-bg.open { display: flex; }
.modal {
  background: #fff; border-radius: 6px; max-width: 420px; width: 100%;
  padding: 24px; border: 1px solid var(--line-strong);
  box-shadow: 0 10px 40px rgba(11,29,58,.3);
  position: relative;
}
.modal.wide { max-width: 520px; }
.modal .pitch {
  font-size: 13px; color: var(--muted); margin: -6px 0 14px;
  line-height: 1.5;
}
#company, #calc {
  scroll-margin-top: 88px;
}
.company-section {
  padding: 48px 0 8px;
}
.company-section .block-head { margin-bottom: 20px; }
.company-prose {
  background: #fff; border: 1px solid var(--line-strong); border-radius: 6px;
  padding: 28px 32px; box-shadow: 0 4px 18px rgba(11,29,58,.06);
  max-width: 880px;
}
.company-prose p { margin-bottom: 14px; color: var(--text); }
.company-prose p:last-child { margin-bottom: 0; }
.company-prose .muted { color: var(--muted); font-size: 14px; }
.modal .label-top {
  position: absolute; top: -11px; left: 18px; background: #fff;
  padding: 0 10px; font-size: 11px; font-weight: 700; color: var(--navy);
  letter-spacing: 2px; text-transform: uppercase;
}
.modal h3 { font-size: 18px; margin-bottom: 14px; }
.modal .input { margin-bottom: 10px; }
.modal .row { display: flex; gap: 8px; margin-top: 8px; }
.msg { font-size: 13px; margin-top: 8px; color: var(--danger); }
.msg.ok { color: var(--success); }

/* === FOOTER === */
footer {
  margin-top: 40px; border-top: 2px solid var(--navy);
  background: #fff; padding: 28px 0; color: var(--muted); font-size: 13px;
}
footer .row {
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
}

/* === UTILS === */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.hidden { display: none !important; }

/* === SMALL PHONE ADAPTATION (360 × 568) === */
@media (max-width: 480px) {
  body {
    font-size: 14px;
    line-height: 1.45;
    background-size: auto, 32px 32px, 32px 32px;
  }

  .container {
    max-width: none;
    padding: 0 12px;
  }

  header.top {
    position: static;
  }

  .top-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    padding: 10px 0;
    align-items: center;
  }

  .logo {
    gap: 9px;
  }

  .logo .mark {
    width: 36px;
    height: 36px;
    font-size: 10px;
  }

  .logo h1 {
    font-size: 15px;
  }

  .logo small {
    font-size: 9px;
    letter-spacing: 1px;
  }

  .mobile-menu-toggle {
    width: 42px;
    height: 38px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: 1px solid var(--line-strong);
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
  }

  .mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    display: block;
    background: var(--navy);
    border-radius: 2px;
    transition: transform .15s, opacity .15s;
  }

  .mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav,
  .actions {
    display: none;
    grid-column: 1 / -1;
  }

  .mobile-menu-open .site-nav,
  .mobile-menu-open .actions {
    display: block;
  }

  .site-nav ul,
  nav ul {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 10px 0 2px;
    border-top: 1px solid var(--line);
  }

  .site-nav-link,
  nav a,
  .site-nav-label {
    display: block;
    font-size: 11px;
    letter-spacing: .6px;
    padding: 9px 0;
  }

  .has-submenu > .site-nav-link::after {
    content: '';
  }

  .submenu {
    display: flex;
    position: static;
    min-width: 0;
    margin: 0 0 4px 12px;
    padding: 0 0 0 10px;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--cyan-soft);
    border-radius: 0;
  }

  .submenu a {
    padding: 7px 0;
    white-space: normal;
  }

  .actions {
    width: 100%;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }

  .mobile-menu-open .actions {
    display: grid;
  }

  .actions .btn,
  .actions a.btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .actions .btn.call {
    grid-column: 1 / -1;
  }

  .btn {
    padding: 9px 10px;
    font-size: 11px;
    letter-spacing: .2px;
  }

  .company-section {
    padding: 28px 0 0;
  }

  .company-prose {
    padding: 18px 16px;
  }

  .hero,
  section.block {
    padding: 32px 0;
  }

  .hero-grid {
    gap: 22px;
  }

  .hero h2 {
    font-size: 28px;
    line-height: 1.15;
  }

  .hero p.lead,
  p.lead {
    font-size: 14px;
  }

  .spec-list,
  .three,
  .result,
  .actions-calc {
    grid-template-columns: 1fr;
  }

  .spec {
    padding: 10px 12px;
  }

  .calc {
    padding: 20px 14px 16px;
  }

  .calc .label-top,
  .modal .label-top {
    left: 12px;
    letter-spacing: 1.2px;
  }

  .block-head {
    display: block;
    margin-bottom: 18px;
  }

  .block-head h2 {
    font-size: 22px;
  }

  .block-head .code {
    display: block;
    margin-top: 6px;
    font-size: 10px;
  }

  .cards {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .sol {
    padding: 16px;
  }

  .solution-cover {
    height: 130px;
  }

  .panel-box {
    overflow-x: auto;
  }

  table {
    min-width: 680px;
    font-size: 12px;
  }

  th,
  td {
    padding: 9px 10px;
  }

  .panel-head {
    padding: 10px 12px;
  }

  .panel-head h3 {
    font-size: 12px;
    letter-spacing: 1.2px;
  }

  .admin-page {
    padding-top: 20px;
  }

  .admin-layout {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .admin-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 10px;
  }

  .admin-sidebar-title {
    padding: 4px 2px 6px;
  }

  .admin-nav-btn {
    padding: 10px;
  }

  .admin-nav-btn + .admin-nav-btn {
    margin-top: 0;
  }

  .admin-nav-btn span {
    font-size: 12px;
  }

  .admin-nav-btn small {
    font-size: 11px;
  }

  .admin-section-head {
    display: block;
    padding: 16px 14px;
  }

  .admin-section-head h3 {
    font-size: 20px;
  }

  .admin-section-head .btn {
    width: 100%;
    margin-top: 12px;
  }

  .admin-actions-grid {
    grid-template-columns: 1fr;
  }

  .admin-action-card {
    min-height: 0;
    padding: 16px;
  }

  .modal-bg {
    align-items: flex-start;
    overflow-y: auto;
    padding: 12px;
  }

  .modal {
    max-width: 100%;
    padding: 20px 14px 16px;
    margin: 18px 0;
  }

  .modal .row {
    flex-direction: column;
  }

  .modal .row .btn {
    width: 100%;
  }

  footer {
    margin-top: 24px;
    padding: 20px 0;
  }

  footer .row {
    display: grid;
    gap: 8px;
  }
}

@media (max-width: 380px) {
  .container {
    padding: 0 10px;
  }

  .actions {
    grid-template-columns: 1fr;
  }

  .actions .btn.call {
    grid-column: auto;
  }

  .hero h2 {
    font-size: 25px;
  }

  .calc,
  .company-prose,
  .admin-section-head,
  .admin-action-card {
    padding-left: 12px;
    padding-right: 12px;
  }

  .input,
  select,
  textarea {
    font-size: 13px;
    padding: 9px 10px;
  }
}

/* === MIN-WIDTH GUARD (iPhone SE, 320 × 568) === */
@media (max-width: 360px) {
  html {
    -webkit-text-size-adjust: 100%;
  }

  body {
    overflow-x: hidden;
  }

  .container {
    padding: 0 8px;
  }

  .top-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px;
    padding: 8px 0;
  }

  .logo .mark {
    width: 32px;
    height: 32px;
    font-size: 9px;
  }

  .logo h1 {
    font-size: 13px;
  }

  .logo small {
    font-size: 9px;
    letter-spacing: .8px;
  }

  .mobile-menu-toggle {
    width: 38px;
    height: 34px;
  }

  .hero {
    padding: 22px 0 18px;
  }

  .hero h2 {
    font-size: 22px;
    line-height: 1.18;
  }

  .hero p.lead,
  p.lead,
  .modal h3 {
    font-size: 13px;
  }

  .block-head h2 {
    font-size: 19px;
  }

  .calc,
  .company-prose,
  .admin-section-head,
  .admin-action-card,
  .modal {
    padding-left: 10px;
    padding-right: 10px;
  }

  .calc h3 {
    font-size: 16px;
  }

  .result div b {
    font-size: 16px;
  }

  .result div b.price {
    font-size: 18px;
  }

  .input,
  select,
  textarea,
  .btn {
    font-size: 12px;
  }

  .btn {
    padding: 9px 8px;
  }

  /* таблицы прокручиваются по горизонтали без обрезания экрана */
  .panel-box {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  table {
    min-width: 560px;
  }

  th, td {
    padding: 8px;
    font-size: 11px;
  }

  /* админка: пункты сайдбара плотнее */
  .admin-sidebar {
    padding: 8px;
  }

  .admin-nav-btn {
    padding: 8px;
  }

  .admin-nav-btn span {
    font-size: 11px;
    letter-spacing: .8px;
  }

  .admin-nav-btn small {
    font-size: 10px;
  }

  .admin-section-head h3 {
    font-size: 18px;
  }

  /* модалки занимают всё доступное пространство и не выходят за границы */
  .modal-bg {
    padding: 8px;
  }

  .modal {
    padding-top: 18px;
    padding-bottom: 14px;
  }

  footer {
    font-size: 11px;
  }

  footer .row .mono {
    word-break: break-word;
  }
}