/* ============================================================
   aleksandr-zverev.ru - сайт-визитка
   Чистый CSS, без фреймворков. Светлая и тёмная темы.
   ============================================================ */

/* ---------- Токены ---------- */
:root {
  color-scheme: light dark;

  --bg: #f7f7f4;
  --bg-soft: #efeee8;
  --surface: #ffffff;
  --surface-2: #f3f4f0;
  --text: #1d2023;
  --muted: #5b636e;
  --border: #e2e1d9;
  --border-strong: #d2d1c7;

  --accent: #0e7a5f;
  --accent-strong: #0b6350;
  --accent-soft: #e3f0ea;
  --accent-text: #0e7a5f;
  --on-accent: #ffffff;

  --term-bg: #131715;
  --term-bg-2: #0e1210;
  --term-border: #262c29;
  --term-text: #c9d4cd;
  --term-dim: #7d8a83;
  --term-accent: #4ecf9d;

  --danger: #b3423a;
  --warn: #a06b12;
  --ok: #2e7d74;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(25, 30, 26, .05), 0 8px 24px -12px rgba(25, 30, 26, .12);
  --shadow-lift: 0 2px 4px rgba(25, 30, 26, .06), 0 16px 40px -16px rgba(25, 30, 26, .2);

  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Consolas, "Liberation Mono", monospace;

  --header-h: 64px;
}

html[data-theme="dark"] {
  color-scheme: dark;

  --bg: #121514;
  --bg-soft: #171b19;
  --surface: #1a1f1d;
  --surface-2: #202624;
  --text: #e7eae6;
  --muted: #9aa49d;
  --border: #2a302c;
  --border-strong: #3a423d;

  --accent: #3bbf8e;
  --accent-strong: #55d3a4;
  --accent-soft: #1d2b26;
  --accent-text: #52cfa0;
  --on-accent: #0c1712;

  --term-bg: #101413;
  --term-bg-2: #0b0e0d;
  --term-border: #272d2a;
  --term-text: #c9d4cd;
  --term-dim: #78857e;
  --term-accent: #4ecf9d;

  --danger: #e07b72;
  --warn: #d3a24a;
  --ok: #45b8a8;

  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .5);
  --shadow-lift: 0 2px 4px rgba(0, 0, 0, .35), 0 16px 40px -16px rgba(0, 0, 0, .6);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--text);
  overflow-x: clip;
  background:
    radial-gradient(1100px 520px at 88% -120px, color-mix(in srgb, var(--accent) 7%, transparent), transparent 70%),
    var(--bg);
  transition: background-color .25s ease, color .25s ease;
}

@supports (padding: max(0px)) {
  .container {
    padding-left: max(18px, env(safe-area-inset-left));
    padding-right: max(18px, env(safe-area-inset-right));
  }
}

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.015em; }
h1, h2 { text-wrap: balance; }
p { text-wrap: pretty; }
h1 { font-size: clamp(2.1rem, 5vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 3.2vw, 2rem); }
h3 { font-size: 1.12rem; }

p { margin: 0 0 1em; }
a { color: var(--accent-text); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.mono { font-family: var(--font-mono); }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

section[id] { scroll-margin-top: calc(var(--header-h) + 18px); }
section { padding: 84px 0; }
section + section { padding-top: 8px; }

::selection { background: var(--accent); color: var(--on-accent); }

/* тонкий скроллбар в духе темы */
@supports (scrollbar-width: thin) {
  html { scrollbar-width: thin; scrollbar-color: color-mix(in srgb, var(--muted) 45%, transparent) transparent; }
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, var(--muted) 38%, transparent);
  border-radius: 999px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: color-mix(in srgb, var(--accent) 55%, var(--muted)); }

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 100;
  background: var(--accent);
  color: var(--on-accent);
  padding: 10px 16px;
  border-radius: 0 0 10px 10px;
  transition: top .15s ease;
}
.skip-link:focus { top: 0; }

/* ---------- Шапка ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.35);
  -webkit-backdrop-filter: blur(14px) saturate(1.35);
  border-bottom: 1px solid var(--border);
}

/* тонкая акцентная нить поверх шапки */
.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent) 45% 55%, transparent);
  opacity: .5;
}

.header-in {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 650;
  text-decoration: none;
  margin-right: auto;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.brand:hover .brand-mark {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 30%, transparent);
}

.site-nav { display: flex; gap: 4px; }

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .95rem;
  padding: 8px 12px;
  border-radius: 8px;
  transition: color .15s ease, background-color .15s ease;
}
.site-nav a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.site-nav a.active {
  color: var(--accent-text);
  background: color-mix(in srgb, var(--accent) 11%, transparent);
}

.header-actions { display: flex; align-items: center; gap: 6px; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }

.ic-moon { display: none; }
html[data-theme="dark"] .ic-moon { display: block; }
html[data-theme="dark"] .ic-sun { display: none; }

.nav-burger { display: none; }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 10px 22px;
  border-radius: 11px;
  font-size: .98rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .12s ease, background-color .15s ease, border-color .15s ease, color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn:hover { text-decoration: none; }

.btn.primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: var(--on-accent);
  box-shadow: 0 8px 22px -12px color-mix(in srgb, var(--accent) 65%, transparent);
}
.btn.primary:hover {
  filter: brightness(1.06);
  box-shadow: 0 10px 26px -10px color-mix(in srgb, var(--accent) 75%, transparent);
}

.btn.ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent-text); }

.btn.small { min-height: 38px; padding: 6px 14px; font-size: .88rem; }

/* Контрольные кнопки стендов: копирование, пресеты cron, сброс PID */
.br-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 7px 16px;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, background-color .15s ease, transform .12s ease;
}
.br-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border-strong));
  color: var(--accent-text);
}
.br-btn:active { transform: translateY(1px); }

/* ---------- Герой ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 72px;
  border-bottom: 1px solid var(--border);
  background-image: radial-gradient(color-mix(in srgb, var(--text) 7%, transparent) 1px, transparent 1px);
  background-size: 26px 26px;
  background-position: -13px -13px;
}

.hero-net {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
}

/* мягкое свечение за терминальным окном */
.hero::before {
  content: "";
  position: absolute;
  right: -12%;
  top: -36%;
  width: 62%;
  aspect-ratio: 1;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 10%, transparent), transparent 72%);
  pointer-events: none;
}

.hero-copy, .hero-side { position: relative; z-index: 1; }

.typed-caret {
  display: inline-block;
  width: 9px;
  height: 1.05em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0 0 22px;
  font-size: .84rem;
}
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats dt {
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
}
.hero-stats dd {
  margin: 2px 0 0;
  font-weight: 650;
  font-size: 1.02rem;
  color: var(--text);
}
.live-dot-wrap {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--accent-text);
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent);
  animation: livePulse 2s ease-out infinite;
}
@keyframes livePulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); }
  70% { box-shadow: 0 0 0 9px rgba(0,0,0,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,0,0,0); }
}

.head-clock {
  font-size: .82rem;
  color: var(--muted);
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
  align-self: center;
}
@media (max-width: 860px) { .head-clock { display: none; } }

/* на мобильных сеть-фон отключаем: адаптация чище и легче */
@media (max-width: 760px) {
  .hero-net { display: none; }
}

/* знак: «З» и узел подстраиваются под тему */
.brand-mark .z-stroke { stroke: var(--accent); }
.brand-mark .z-node { fill: var(--accent); }
html[data-theme="dark"] .brand-mark .z-stroke { stroke: #6ee7b7; }
html[data-theme="dark"] .brand-mark .z-node { fill: #6ee7b7; }
.brand-mark .a-stroke { stroke: currentColor; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 56px;
  align-items: center;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--accent-text);
  margin-bottom: 14px;
}
.kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.hero-role {
  font-size: 1.02rem;
  color: var(--accent-text);
  margin: 18px 0 14px;
}
.hero-role span { color: var(--muted); margin-right: 6px; }

.hero-lead {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 34em;
  margin-bottom: 28px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }

/* Терминальное окно (герой и демо) */
.hero-term {
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: var(--radius);
  box-shadow:
    var(--shadow-lift),
    0 0 46px -20px color-mix(in srgb, var(--accent) 40%, transparent);
  overflow: hidden;
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  background: var(--term-bg-2);
  border-bottom: 1px solid var(--term-border);
}

.term-dot { width: 11px; height: 11px; border-radius: 50%; }
.term-dot.r { background: #e5645c; }
.term-dot.y { background: #e0a53f; }
.term-dot.g { background: #58b66b; }

.term-title {
  margin-left: 8px;
  font-size: .74rem;
  color: var(--term-dim);
  letter-spacing: .03em;
}

.hero-term .term-body {
  padding: 18px 18px 20px;
  font-size: .83rem;
  line-height: 1.75;
  color: var(--term-text);
}
.hero-term .term-body p { margin: 0; }
.t-prompt { color: var(--term-accent); font-weight: 600; }
.t-out { color: var(--term-dim); padding-left: 14px; }

.cursor {
  display: inline-block;
  width: 9px;
  height: 1.05em;
  vertical-align: text-bottom;
  background: var(--term-accent);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Заголовки секций ---------- */
.sec-head { margin-bottom: 40px; max-width: 44em; }

.sec-num {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .8rem;
  color: var(--accent-text);
  letter-spacing: .16em;
  margin-bottom: 10px;
}
.sec-num::after {
  content: "";
  width: 54px;
  height: 1px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 65%, transparent), transparent);
}

.sec-sub { color: var(--muted); font-size: 1.04rem; margin: 6px 0 0; }

/* ---------- Обо мне ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 40px;
  align-items: start;
}

.about-prose { font-size: 1.05rem; }
.about-prose p { margin-bottom: 1.1em; }

.facts-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.facts-title {
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
  margin-bottom: 14px;
}

.facts { margin: 0; }
.facts div {
  display: flex;
  flex-direction: column;
  padding: 10px 0;
  border-top: 1px solid var(--border);
}
.facts dt { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.facts dd { margin: 3px 0 0; font-weight: 550; font-size: .96rem; }

/* ---------- Пет-проекты ---------- */
.demo-card {
  --corner: 14px;
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  margin-bottom: 28px;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.demo-card:hover {
  border-color: color-mix(in srgb, var(--accent) 32%, var(--border));
  box-shadow: var(--shadow-lift);
}
.demo-card:hover::before, .demo-card:hover::after {
  border-color: color-mix(in srgb, var(--accent) 85%, transparent);
}
.demo-card::before, .demo-card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1.5px solid color-mix(in srgb, var(--accent) 55%, transparent);
  pointer-events: none;
}
.demo-card::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; border-top-left-radius: var(--radius); }
.demo-card::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; border-bottom-right-radius: var(--radius); }

.demo-head { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 12px; }
.demo-head h3 { margin: 0 0 2px; }

.demo-icon {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--accent) 14%, var(--surface)));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent-text);
  flex: none;
}

.demo-tags { font-size: .76rem; color: var(--muted); letter-spacing: .05em; margin: 0; }

.demo-desc { color: var(--muted); max-width: 46em; margin-bottom: 22px; }
.demo-desc code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: .85em;
}

.noscript-note { color: var(--warn); }

/* --- Демо 1: умный дом --- */
.sh-layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 18px;
  margin-bottom: 18px;
}

.sh-devices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-content: start;
}

.sh-dev {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 14px;
  min-height: 104px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  color: var(--text);
  text-align: left;
  transition: border-color .15s ease, background-color .15s ease, box-shadow .15s ease;
}
.sh-dev:hover { border-color: var(--border-strong); }

.sh-ic { color: var(--muted); transition: color .15s ease; }

.sh-name { font-weight: 600; font-size: .9rem; line-height: 1.3; }

.sh-state {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--surface);
}

.sh-dev.on {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
.sh-dev.on .sh-ic { color: var(--accent-text); }
.sh-dev.on .sh-state {
  color: var(--accent-text);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

.sh-climate {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sh-slider-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: .9rem;
  font-weight: 600;
}
.sh-slider-row output { color: var(--accent-text); font-size: .95rem; }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 30px;
  background: transparent;
  cursor: pointer;
  margin: 0;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(to right, var(--accent) 0 var(--fill, 50%), var(--border) var(--fill, 50%) 100%);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -7px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--accent);
  box-shadow: var(--shadow);
  transition: box-shadow .15s ease;
}
input[type="range"]:active::-webkit-slider-thumb {
  box-shadow: 0 0 0 7px color-mix(in srgb, var(--accent) 16%, transparent);
}
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--border);
}
input[type="range"]::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--accent);
}
input[type="range"]::-moz-range-thumb {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--accent);
}

.sh-reads {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 14px;
  margin: 0;
}
.sh-reads div {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 7px 11px;
}
.sh-reads dt { font-size: .72rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
.sh-reads dd { margin: 1px 0 0; font-size: .92rem; font-weight: 600; }

.sh-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.sh-auto {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}
.sh-auto input {
  appearance: none;
  -webkit-appearance: none;
  width: 40px;
  height: 23px;
  border-radius: 999px;
  background: var(--border-strong);
  position: relative;
  cursor: pointer;
  transition: background-color .18s ease;
  margin: 0;
  flex: none;
}
.sh-auto input::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: #fff;
  transition: transform .18s ease;
  box-shadow: 0 1px 2px rgba(0,0,0,.25);
}
.sh-auto input:checked { background: var(--accent); }
.sh-auto input:checked::after { transform: translateX(17px); }

.sh-bottom {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: 18px;
}

.sh-power {
  margin: 0;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  min-width: 0;
}
.sh-power figcaption {
  font-size: .82rem;
  color: var(--muted);
  margin-bottom: 8px;
}
.sh-power figcaption b { color: var(--text); }
.sh-power canvas { width: 100%; max-width: 100%; height: 110px; display: block; }

.sh-log-wrap {
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  min-height: 170px;
  min-width: 0;
}
.sh-log-title { font-size: .72rem; color: var(--term-dim); letter-spacing: .1em; text-transform: uppercase; margin: 0 0 8px; }
.sh-log { font-size: .74rem; line-height: 1.7; color: var(--term-text); overflow: hidden auto; flex: 1; min-width: 0; }
.sh-log p { margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; animation: logIn .25s ease; }
.sh-log .lg-time { color: var(--term-dim); }
.sh-log .lg-topic { color: var(--term-accent); }
@keyframes logIn { from { opacity: 0; transform: translateY(-3px); } }

/* --- Демо 2: робот --- */
.robot-stage {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-2);
}

#robot-canvas { display: block; width: 100%; height: auto; cursor: crosshair; touch-action: manipulation; }

.robot-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.seg {
  display: inline-flex;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 4px;
  gap: 2px;
}

.seg-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: .88rem;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}
.seg-btn:hover { color: var(--text); }
.seg-btn.active { background: var(--accent); color: var(--on-accent); }

#robot-telemetry { font-size: .78rem; color: var(--muted); }

/* --- Демо 3: терминал --- */
.term {
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 12px;
  overflow: hidden;
}

.term-body {
  height: 300px;
  overflow-y: auto;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.7;
  color: var(--term-text);
}
.term-body p { margin: 0; white-space: pre-wrap; word-break: break-word; }
.term-body .t-dim { color: var(--term-dim); }
.term-body .t-ok { color: var(--term-accent); }
.term-body .t-warn { color: var(--warn, #d3a24a); }
.term-body .t-err { color: #e07b72; }
.term-body .t-in .t-prompt { margin-right: 8px; }

.term-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px 12px;
  border-top: 1px solid var(--term-border);
  background: var(--term-bg-2);
  margin: 0;
}

.term-prompt { color: var(--term-accent); font-size: .82rem; white-space: nowrap; }

#term-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--term-text);
  font-family: var(--font-mono);
  font-size: .82rem;
  caret-color: var(--term-accent);
}

/* ---------- Стенд: калькулятор подсетей ---------- */
.subnet-inputs {
  display: grid;
  grid-template-columns: 1fr 130px;
  gap: 12px;
  margin-bottom: 18px;
}
.subnet-field { display: flex; flex-direction: column; gap: 6px; }
.subnet-field > span {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
}
.subnet-field input, .subnet-field .prefix-wrap {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 11px 13px;
  font-size: 16px;
  color: var(--text);
}
.subnet-field input:focus { border-color: var(--accent); outline: none; }
.prefix-wrap { display: flex; align-items: center; gap: 2px; }
.prefix-wrap input { flex: 1; min-width: 0; padding: 11px 6px 11px 2px; }

.subnet-out {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: .86rem;
  line-height: 1.9;
  overflow-x: auto;
  white-space: pre;
}
.subnet-out .k { color: var(--muted); }
.subnet-out .v { color: var(--text); font-weight: 600; }
.subnet-out .bin { color: var(--accent-text); opacity: .85; }
.subnet-out .err { color: var(--danger); }

/* ---------- Стенд: PID-регулятор ---------- */
.pid-chart-wrap {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-2);
}
#pid-chart { display: block; width: 100%; height: auto; }
.pid-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 16px 0 6px;
}
.pid-slider { display: flex; flex-direction: column; gap: 6px; }
.pid-slider > span {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--muted);
  letter-spacing: .08em;
}
.pid-slider output {
  font-size: .84rem;
  color: var(--accent-text);
  font-variant-numeric: tabular-nums;
}
.pid-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0 0;
}
.pid-metrics div {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 9px 12px;
}
.pid-metrics dt {
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
}
.pid-metrics dd {
  margin: 2px 0 0;
  font-size: .98rem;
  font-weight: 600;
  color: var(--text);
}
@media (max-width: 700px) {
  .pid-controls, .pid-metrics { grid-template-columns: 1fr 1fr; }
  .subnet-inputs { grid-template-columns: 1fr; }
}

/* ---------- Стенд: пароли и энтропия ---------- */
.pw-controls {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px 20px;
  align-items: end;
  margin-bottom: 14px;
}
.pw-slider { display: flex; flex-direction: column; gap: 6px; }
.pw-slider > span {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--muted);
  letter-spacing: .08em;
}
.pw-slider output {
  color: var(--accent-text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.pw-sets { display: flex; gap: 8px; flex-wrap: wrap; }
.pw-sets label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 11px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--muted);
  transition: border-color .15s ease, color .15s ease;
}
.pw-sets label:has(input:checked) {
  border-color: color-mix(in srgb, var(--accent) 60%, var(--border));
  color: var(--accent-text);
}
.pw-sets input { accent-color: var(--accent); margin: 0; }

.pw-output {
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--term-accent);
  font-size: clamp(.95rem, 2.5vw, 1.04rem);
  letter-spacing: .04em;
  line-height: 1.55;
  /* длинный пароль переносится, а не выпадает за рамку на телефоне */
  overflow-wrap: anywhere;
  word-break: break-all;
  min-height: 2.6em;
  display: flex;
  align-items: center;
}

.pw-bottom {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px 16px;
  align-items: center;
  margin-top: 14px;
}
.pw-meter {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  overflow: hidden;
  grid-row: 1;
}
.pw-meter-fill {
  height: 100%;
  width: 0;
  border-radius: 999px;
  transition: width .3s ease, background-color .3s ease;
}
.pw-meter-fill.weak { background: var(--danger); }
.pw-meter-fill.mid { background: var(--warn); }
.pw-meter-fill.ok { background: var(--ok); }
.pw-meter-fill.strong { background: var(--accent); }
.pw-meter-fill.top { background: linear-gradient(90deg, var(--accent), var(--accent-strong)); }
.pw-verdict {
  font-size: .84rem;
  color: var(--muted);
  grid-row: 2;
  grid-column: 1 / -1;
  transition: color .3s ease;
}
/* статус окрашен уровнем: отклик виден на каждое движение ползунка */
.pw-verdict.weak { color: var(--danger); }
.pw-verdict.mid { color: var(--warn); }
.pw-verdict.ok { color: var(--ok); }
.pw-verdict.strong, .pw-verdict.top { color: var(--accent-text); }

/* ---------- Стенд: cron-переводчик ---------- */
.cron-input {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px 8px 4px 14px;
  margin-bottom: 12px;
}
.cron-input:focus-within { border-color: var(--accent); }
.cron-input > span {
  color: var(--accent-text);
  font-size: .8rem;
  font-weight: 600;
}
.cron-input input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--text);
  font-size: 16px;
  padding: 10px 0;
}
.cron-presets { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.cron-out {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: .88rem;
  line-height: 1.9;
  white-space: pre-wrap;
}
.cron-out .k { color: var(--muted); }
.cron-out .v { color: var(--text); font-weight: 600; }
.cron-out .err { color: var(--danger); }
@media (max-width: 700px) {
  .pw-controls { grid-template-columns: 1fr; }
}

/* ---------- Избранные проекты ---------- */
.proj-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
@media (min-width: 900px) {
  .proj-groups { grid-template-columns: 1fr 1fr; }
}
.proj-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--shadow);
}
.proj-group h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--accent-text);
  margin: 0 0 14px;
}
.proj-group h3::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.proj-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.proj-list li {
  position: relative;
  padding: 9px 0 9px 22px;
  font-size: .96rem;
  line-height: 1.5;
  color: var(--text);
  border-top: 1px solid var(--border);
}
.proj-list li:first-child { border-top: 0; }
.proj-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 17px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .8;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}
.proj-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: .94rem;
}

/* ---------- Контакты ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
  color: var(--text);
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.contact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  text-decoration: none;
}

.contact-icon {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--accent) 14%, var(--surface)));
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent-text);
  flex: none;
}

.contact-body { display: flex; flex-direction: column; min-width: 0; }
.contact-label { font-size: .76rem; text-transform: uppercase; letter-spacing: .09em; color: var(--muted); }
.contact-value {
  font-weight: 600;
  font-size: .92rem;
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.contact-note { color: var(--muted); font-size: .92rem; margin: 22px 0 0; }

/* ---------- Подвал ---------- */
.site-footer {
  position: relative;
  border-top: 1px solid var(--border);
  padding: 28px 0;
  margin-top: 40px;
}

/* акцентная нить по центру верхней кромки */
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: min(340px, 70%);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: .55;
}

.footer-in {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: .9rem;
  color: var(--muted);
}
.footer-in p { margin: 0; }
.footer-in .mono { font-size: .78rem; }

/* ---------- Появление при скролле (JS + гарантированный показ таймером) ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Адаптив ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 60px 0 56px; }
  .hero-term { max-width: 560px; }
  .about-grid { grid-template-columns: 1fr; }
  .facts-card { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .container { padding: 0 18px; }
  section { padding: 52px 0; }

  .nav-burger { display: inline-grid; }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 2px;
    padding: 10px 18px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lift);
  }
  .site-header.nav-open .site-nav { display: flex; }
  .site-nav a { padding: 12px 12px; font-size: 1.02rem; border-radius: 10px; }

  .sh-layout,
  .sh-bottom { grid-template-columns: minmax(0, 1fr); }

  .demo-card { padding: 20px 18px; }

  .robot-bar { flex-direction: column; align-items: stretch; }
  .robot-bar .seg { justify-content: center; }
  #robot-telemetry { text-align: center; }

  .term-body { height: 260px; }
  /* iOS: инпуты <16px вызывают зум при фокусе */
  #term-input, .subnet-field input, .prefix-wrap input { font-size: 16px; }

  .hero-actions .btn { flex: 1 1 auto; }
}

@media (max-width: 480px) {
  .sh-devices { grid-template-columns: 1fr; }
  .sh-dev { min-height: 0; flex-direction: row; align-items: center; gap: 10px; padding: 12px 14px; }
  .sh-state { margin: 0 0 0 auto; }
  .sh-controls { flex-direction: column; align-items: stretch; }
  .sh-controls .btn { width: 100%; }
}

/* ---------- Уважение к настройкам движения ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .live-dot { animation: none; }
  .typed-caret { animation: none; }
  .cursor { animation: none; }
  .sh-log p { animation: none; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

/* ---------- Страница 404 ---------- */
.error-page { display: grid; min-height: 100vh; }
.error-in { display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }
.error-code { font-size: 4.6rem; font-weight: 700; color: var(--accent-text); margin: 0; }
.error-text { color: var(--muted); max-width: 30em; }
.error-actions { margin-top: 8px; }

/* ---------- Печать ---------- */
@media print {
  .site-header, .hero-actions, .site-footer, .demo-card, .hero-side, .skip-link { display: none !important; }
  body { background: #fff; color: #111; }
  section { padding: 24px 0; }
}