/* mudgame.ru — оформление лендинга о текстовых MUD-играх.
   Внешних зависимостей нет: все стили собраны в этом файле. */
:root {
  --bg: #0b0f14;
  --panel: rgba(255, 255, 255, .045);
  --panel-2: #080b10;
  --line: rgba(255, 255, 255, .12);
  --text: #eaf1ea;
  --muted: #9aa8a2;
  --accent: #7ee0b0;
  --accent2: #ffc061;
  --radius: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 48% at 8% 0%, rgba(126, 224, 176, .16), transparent 70%),
    radial-gradient(52% 44% at 100% 8%, rgba(255, 192, 97, .14), transparent 72%);
}
.wrap { max-width: 940px; margin: 0 auto; padding: 0 20px; }

/* Шапка */
.top {
  padding: 22px 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.logo { font-weight: 800; letter-spacing: -.02em; font-size: 19px; }
.logo span { color: var(--accent); }
.nav { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 14.5px; }
.nav a { color: var(--muted); text-decoration: none; border-bottom: 1px solid transparent; }
.nav a:hover { color: var(--text); border-bottom-color: var(--accent); }

/* Первый экран */
.hero { padding: 56px 0 34px; }
h1 { font-size: clamp(29px, 5.2vw, 50px); line-height: 1.12; letter-spacing: -.03em; margin: 0 0 16px; }
.lead { font-size: clamp(16.5px, 2.1vw, 19.5px); color: var(--muted); max-width: 64ch; margin: 0 0 24px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font: inherit;
  font-weight: 650;
  font-size: 16px;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.btn:hover { transform: translateY(-2px); border-color: rgba(126, 224, 176, .55); }
.btn--main {
  background: linear-gradient(100deg, var(--accent), var(--accent2));
  color: #06120d;
  border-color: transparent;
  box-shadow: 0 14px 34px rgba(126, 224, 176, .22);
}
.btn--cmd { padding: 9px 16px; font-size: 14.5px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.btn--ghost { color: var(--muted); }

/* Секции и карточки */
section { padding: 30px 0; }
h2 { font-size: clamp(22px, 3.4vw, 30px); letter-spacing: -.02em; margin: 0 0 14px; }
h3 { font-size: 18px; margin: 0 0 6px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(10px);
}
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }
p strong { color: var(--text); }

ol.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
ol.steps li { counter-increment: s; position: relative; padding-left: 52px; }
ol.steps li::before {
  content: counter(s);
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #06120d;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
}
ol.steps p { margin: 6px 0 0; color: var(--muted); font-size: 15.5px; }

ul.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
ul.checks li { position: relative; padding-left: 30px; color: var(--muted); }
ul.checks li::before {
  content: "▸";
  position: absolute;
  left: 6px;
  top: 0;
  color: var(--accent);
}
ul.checks strong { color: var(--text); }

/* Демо */
.demo { display: grid; gap: 12px; }
.demo__log {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  min-height: 190px;
  max-height: 320px;
  overflow-y: auto;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 14px;
  line-height: 1.6;
  color: #d6ecdd;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.demo__cmds { display: flex; flex-wrap: wrap; gap: 8px; }
.demo__form { display: flex; gap: 10px; flex-wrap: wrap; }
.demo__input {
  flex: 1 1 220px;
  min-width: 0;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  font: inherit;
  font-size: 15.5px;
}
.demo__input::placeholder { color: rgba(154, 168, 162, .8); }
.demo__input:focus { outline: 2px solid rgba(126, 224, 176, .55); outline-offset: 1px; }

/* FAQ и подвал */
details {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 10px;
  background: var(--panel);
}
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }
footer {
  padding: 36px 0 56px;
  color: var(--muted);
  font-size: 14.5px;
  border-top: 1px solid var(--line);
  margin-top: 28px;
}
footer strong { color: var(--text); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 640px) {
  .hero { padding: 34px 0 20px; }
  section { padding: 22px 0; }
  .nav { font-size: 13.5px; gap: 4px 12px; }
  .demo__form .btn { width: 100%; }
  ol.steps li { padding-left: 44px; }
}
@media (max-width: 380px) {
  .wrap { padding: 0 14px; }
  .btn { padding: 11px 18px; }
  .btn--cmd { font-size: 13.5px; padding: 8px 13px; }
}