/* ============================================================
   asterisk.algomix.ru — «Asterisk и FreePBX: интеграция с CRM»
   Единый файл стилей. Палитра унаследована от иконки продукта
   (concept_b3: индиго ↔ циан, оранжевое ядро, тёмный фон).
   Без внешних шрифтов и скриптов. Системный шрифтовой стек.
   ============================================================ */

:root {
  --bg: #0B1729;
  --bg-soft: #0E1C33;
  --panel: #101F3A;
  --panel-2: #142545;
  --line: rgba(139, 158, 255, 0.14);
  --line-strong: rgba(139, 158, 255, 0.30);
  --ink: #E8EFFA;
  --ink-soft: #C6D3E8;
  --muted: #92A6C3;
  --indigo: #6D5BF5;
  --indigo-deep: #4B3FD6;
  --cyan: #2FC8E8;
  --blue: #3B82F6;
  --orange: #FF8A3D;
  --coral: #FF6A5B;
  --seam: linear-gradient(90deg, var(--indigo) 0%, var(--cyan) 100%);
  --core: linear-gradient(135deg, var(--orange), var(--coral));
  --radius: 16px;
  --radius-lg: 22px;
  --shadow: 0 18px 40px -18px rgba(3, 8, 20, 0.9);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, sans-serif;
  --space-section: clamp(3.5rem, 2.5rem + 4vw, 7rem);
}

/* ---------- База ---------- */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(1100px 520px at 78% -8%, rgba(75, 63, 214, 0.20), transparent 62%),
    radial-gradient(900px 480px at 12% 108%, rgba(47, 200, 232, 0.10), transparent 60%);
  background-attachment: fixed;
  color: var(--ink-soft);
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  color: var(--ink);
  line-height: 1.2;
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.9rem, 1.3rem + 3vw, 3.1rem); }
h2 { font-size: clamp(1.45rem, 1.15rem + 1.5vw, 2.1rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; }

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: #7FDDF2; text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

section { padding-block: var(--space-section); }
section + section { padding-top: 0; }

.section-head { max-width: 640px; margin-bottom: 2.2rem; }
.section-head p { color: var(--muted); }

/* Фирменный «шов» — градиентная линия из иконки */
.seam {
  display: block;
  width: 74px;
  height: 5px;
  border-radius: 3px;
  background: var(--seam);
  margin: 1.1rem 0 1.4rem;
}

.center { text-align: center; }
.center .seam { margin-inline: auto; }

/* ---------- Шапка ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 23, 41, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(140%) blur(8px);
}

.nav-row {
  display: flex;
  align-items: center;
  gap: 0.9rem 1.6rem;
  flex-wrap: wrap;
  padding-block: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 700;
}
.brand:hover { text-decoration: none; color: var(--ink); }
.brand img { display: block; border-radius: 9px; }

.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-tag {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.3rem;
  margin-inline: auto;
}

.site-nav a {
  color: var(--ink-soft);
  padding: 0.45rem 0.75rem;
  border-radius: 10px;
  font-size: 0.95rem;
  transition: background 0.15s ease, color 0.15s ease;
}
.site-nav a:hover {
  color: var(--ink);
  background: rgba(109, 91, 245, 0.16);
  text-decoration: none;
}
.site-nav a[aria-current="page"] {
  color: var(--ink);
  background: rgba(109, 91, 245, 0.22);
}

/* ---------- Кнопки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.35rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease,
              background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-accent {
  background: var(--core);
  color: #23140B;
  box-shadow: 0 10px 26px -12px rgba(255, 122, 74, 0.75);
}
.btn-accent:hover {
  color: #23140B;
  box-shadow: 0 14px 30px -12px rgba(255, 122, 74, 0.9);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--cyan);
  background: rgba(47, 200, 232, 0.08);
}

.btn-nav { padding: 0.55rem 1.05rem; font-size: 0.92rem; }

/* ---------- Hero ---------- */

.hero { padding-block: clamp(3rem, 2rem + 4vw, 6rem); }

.hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero .lead {
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.8rem;
  padding: 0;
  list-style: none;
}
.hero-chips li {
  font-size: 0.82rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  background: rgba(16, 31, 58, 0.7);
  border-radius: 999px;
  padding: 0.32rem 0.8rem;
}

.hero-visual { display: none; text-align: center; }
.hero-visual img {
  filter: drop-shadow(0 24px 60px rgba(75, 63, 214, 0.45));
}

/* ---------- Карточки и сетки ---------- */

.grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: 1fr;
}

.card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.2rem;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 0.4rem; }
.card p { color: var(--muted); margin-bottom: 0; font-size: 0.95rem; }

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  background: rgba(109, 91, 245, 0.18);
  border: 1px solid rgba(109, 91, 245, 0.35);
}
.card-icon.alt {
  background: rgba(47, 200, 232, 0.13);
  border-color: rgba(47, 200, 232, 0.32);
}
.card-icon svg { display: block; }

/* ---------- Шаги ---------- */

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.1rem;
}
.steps > li {
  counter-increment: step;
  position: relative;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem 1.2rem 4.4rem;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 1.15rem;
  top: 1.15rem;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--indigo), var(--indigo-deep));
}
.steps h3 { margin-bottom: 0.3rem; font-size: 1.05rem; }
.steps p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ---------- Списки-отличия ---------- */

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}
.checklist li {
  position: relative;
  padding-left: 2.1rem;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background:
    linear-gradient(var(--bg), var(--bg)) padding-box,
    var(--seam) border-box;
  border: 2px solid transparent;
}
.checklist li::after {
  content: "";
  position: absolute;
  left: 0.38rem;
  top: 0.55em;
  width: 0.42rem;
  height: 0.24rem;
  border-left: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(-45deg);
}

/* ---------- Тарифы ---------- */

.pricing { align-items: stretch; }

.price-card {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.7rem 1.6rem 1.5rem;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.price-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--line-strong);
}
.price-card.featured {
  border-color: rgba(255, 138, 61, 0.55);
  box-shadow: 0 16px 44px -20px rgba(255, 122, 74, 0.55);
}

.price-badge {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #23140B;
  background: var(--core);
  border-radius: 999px;
  padding: 0.22rem 0.7rem;
  margin-bottom: 0.8rem;
}

.price-name { font-size: 1.2rem; margin-bottom: 0.15rem; }
.price-limit { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.1rem; }

.price-value { color: var(--ink); font-size: 1.7rem; font-weight: 700; }
.price-value small { font-size: 0.85rem; font-weight: 500; color: var(--muted); }
.price-alt { color: var(--muted); font-size: 0.9rem; margin: 0.2rem 0 1.2rem; }

.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.4rem;
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.price-card ul li { padding-left: 1.4rem; position: relative; }
.price-card ul li::before {
  content: "";
  position: absolute;
  left: 0.1rem;
  top: 0.5em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--seam);
}
.price-card .btn { margin-top: auto; }

/* ---------- FAQ ---------- */

.faq { max-width: 800px; }

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.05rem 3rem 1.05rem 1.3rem;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  transition: background 0.15s ease;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 1.25rem;
  top: 50%;
  width: 0.6rem;
  height: 0.6rem;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.18s ease;
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq summary:hover { background: rgba(109, 91, 245, 0.10); }
.faq details > div {
  padding: 0 1.3rem 1.15rem;
  color: var(--muted);
}
.faq details > div p:last-child { margin-bottom: 0; }

/* ---------- Таблицы ---------- */

.table-wrap { overflow-x: auto; }

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 480px;
}
.table th, .table td {
  text-align: left;
  padding: 0.75rem 0.95rem;
  border-bottom: 1px solid var(--line);
}
.table th {
  color: var(--ink);
  font-weight: 600;
  background: rgba(109, 91, 245, 0.10);
}
.table tbody tr:hover { background: rgba(47, 200, 232, 0.05); }
.table td { color: var(--ink-soft); }

/* ---------- Служебные блоки ---------- */

.note {
  border: 1px solid rgba(255, 138, 61, 0.4);
  border-left: 4px solid var(--orange);
  background: rgba(255, 138, 61, 0.07);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin: 1.4rem 0;
  color: var(--ink-soft);
}
.note p:last-child { margin-bottom: 0; }

.note-info {
  border-color: rgba(47, 200, 232, 0.4);
  border-left-color: var(--cyan);
  background: rgba(47, 200, 232, 0.06);
}

.code {
  background: #0A1424;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.88rem;
  color: #BFE0FF;
  line-height: 1.6;
}

.kv {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.5rem 1.4rem;
  margin: 0;
}
.kv dt { color: var(--muted); font-size: 0.92rem; }
.kv dd { margin: 0; color: var(--ink); font-weight: 500; overflow-wrap: anywhere; }

/* ---------- CTA-полоса ---------- */

.cta-band {
  background:
    radial-gradient(600px 260px at 85% 20%, rgba(255, 138, 61, 0.16), transparent 60%),
    linear-gradient(135deg, rgba(75, 63, 214, 0.35), rgba(16, 31, 58, 0.9));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.8rem, 1.4rem + 2vw, 3.2rem);
  text-align: center;
}
.cta-band p { max-width: 560px; margin-inline: auto; color: var(--ink-soft); }
.cta-band .hero-actions { justify-content: center; }

/* ---------- Формы ---------- */

.form {
  display: grid;
  gap: 1rem;
  max-width: 620px;
}
.form label { display: grid; gap: 0.35rem; font-size: 0.92rem; color: var(--ink); }
.form input[type="text"],
.form input[type="email"],
.form textarea {
  font: inherit;
  color: var(--ink);
  background: #0A1424;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form input:focus, .form textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 200, 232, 0.2);
}
.form textarea { min-height: 130px; resize: vertical; }

.form .consent {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 400;
}
.form .consent input { margin-top: 0.25rem; accent-color: var(--orange); }

/* ---------- Хлебные крошки ---------- */

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--muted);
  padding-top: 1.4rem;
}
.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  margin: 0;
}
.breadcrumbs li + li::before { content: "→"; margin-right: 0.4rem; color: var(--line-strong); }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--cyan); }

/* ---------- Юридические страницы ---------- */

.prose { max-width: 780px; }
.prose h2 { font-size: 1.2rem; margin-top: 2.2rem; }
.prose p, .prose li { color: var(--ink-soft); font-size: 0.97rem; }
.prose ul { padding-left: 1.4rem; }
.prose .doc-meta { color: var(--muted); font-size: 0.88rem; }

.requisites {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem;
  margin-top: 1.6rem;
}
.requisites p { margin: 0.25rem 0; }

/* ---------- Подвал ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(8, 17, 32, 0.75);
  margin-top: var(--space-section);
  padding-block: 2.8rem 2rem;
  font-size: 0.9rem;
}

.footer-grid { display: grid; gap: 2rem; }

.footer-h {
  color: var(--ink);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin: 0 0 0.8rem;
}

.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.45rem; }
.footer-col a { color: var(--muted); }
.footer-col a:hover { color: var(--cyan); }
.footer-org p { color: var(--muted); margin: 0.8rem 0 0; max-width: 320px; }

.footer-bottom {
  margin-top: 2.2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}
.footer-bottom p { margin: 0.3rem 0; }

/* ---------- Адаптив ---------- */

@media (min-width: 560px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps.vertical { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.4fr; }
  .site-nav { gap: 0.2rem 0.55rem; }
}

@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .hero-grid { grid-template-columns: 1.25fr 0.75fr; }
  .hero-visual { display: block; }
}

@media (min-width: 1440px) {
  .container { width: min(1240px, 90%); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* ---------- Калькулятор тарифов ---------- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.calc-row { margin-bottom: 1.6rem; }

.calc-label {
  display: block;
  font-size: 0.92rem;
  color: var(--text-dim, #9db0cc);
  margin-bottom: 0.65rem;
}

.calc-inline {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.calc-inline input[type="range"] {
  flex: 1 1 auto;
  accent-color: var(--accent, #ff8a3d);
  height: 6px;
  cursor: pointer;
}

.calc-out {
  min-width: 3.4rem;
  text-align: center;
  font-size: 1.35rem;
  font-weight: 700;
  padding: 0.35rem 0.7rem;
  border-radius: 12px;
  background: rgba(255, 138, 61, 0.14);
  color: #ffb787;
}

.calc-periods {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 176, 214, 0.28);
  background: rgba(18, 40, 72, 0.55);
  color: #cfe0f5;
  font: inherit;
  font-size: 0.92rem;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.chip span { font-size: 0.78rem; color: #7fe0b0; }
.chip:hover { border-color: rgba(148, 176, 214, 0.6); transform: translateY(-1px); }
.chip:focus-visible { outline: 2px solid var(--accent, #ff8a3d); outline-offset: 2px; }

.chip.is-active {
  border-color: rgba(255, 138, 61, 0.75);
  background: linear-gradient(135deg, rgba(255, 138, 61, 0.22), rgba(255, 138, 61, 0.08));
  color: #fff;
}

.calc-result {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.2rem;
  margin-top: 1.8rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(148, 176, 214, 0.18);
}

.calc-total {
  margin: 0;
  font-size: clamp(2rem, 1.2rem + 2.6vw, 2.9rem);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
}

.calc-sub { margin: 0.35rem 0 0; color: var(--text-dim, #9db0cc); font-size: 0.94rem; }
.calc-aside { text-align: right; }
.calc-month { margin: 0; font-size: 1.05rem; font-weight: 600; color: #cfe0f5; }
.calc-save { margin: 0.3rem 0 0; font-size: 0.9rem; color: #7fe0b0; }
.calc-note:not(:empty) {
  margin-top: 1.1rem;
  padding: 0.7rem 0.95rem;
  border-radius: 12px;
  background: rgba(91, 199, 255, 0.1);
  color: #a9dcff;
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .calc-result { flex-direction: column; align-items: flex-start; }
  .calc-aside { text-align: left; }
}

/* повышаем специфичность: внутри .card общие правила для p перебивали размер итога */
.card .calc-total {
  font-size: clamp(2rem, 1.2rem + 2.6vw, 2.9rem);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -0.02em;
}
.card .calc-month { font-size: 1.05rem; font-weight: 600; color: #cfe0f5; }
.card .calc-sub, .card .calc-save { font-size: 0.92rem; }