/* sentinelcctv.pt. One stylesheet, no external fonts or requests. */

:root {
  color-scheme: light dark;

  --bg: #fbfbfa;
  --bg-alt: #f2f2ef;
  --fg: #16181c;
  --fg-muted: #5a5f68;
  --line: #deded9;
  --accent: #2563d9;
  --accent-hover: #1d4fb0;
  --accent-fg: #ffffff;
  --code-bg: #15181d;
  --code-fg: #e9ebee;
  --shot-shadow: 0 1px 2px rgb(0 0 0 / 0.06), 0 12px 32px rgb(0 0 0 / 0.10);

  --wrap: 1120px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1114;
    --bg-alt: #15181c;
    --fg: #eef0f2;
    --fg-muted: #a3a9b2;
    --line: #2a2e34;
    --accent: #5b93f5;
    --accent-hover: #7aa8f8;
    --accent-fg: #0b0d10;
    --code-bg: #090a0c;
    --shot-shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 12px 32px rgb(0 0 0 / 0.45);
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-hover);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 0.6em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 760;
  letter-spacing: -0.025em;
}

h2 {
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  font-weight: 720;
}

p {
  margin: 0 0 1em;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  padding: 0.05em 0.35em;
  border-radius: 5px;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 10;
  background: var(--bg);
  padding: 8px 12px;
}

.skip:focus {
  left: 12px;
}

/* Header */

.top {
  border-bottom: 1px solid var(--line);
}

.top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--fg);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover {
  color: var(--fg);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.95rem;
}

.nav a {
  color: var(--fg-muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--fg);
}

.nav .lang {
  color: var(--fg);
  font-weight: 650;
}

@media (max-width: 640px) {
  .nav .nav__optional {
    display: none;
  }
}

/* Buttons */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--fg);
  font-weight: 620;
  text-decoration: none;
}

.btn:hover {
  color: var(--fg);
  border-color: var(--fg-muted);
}

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--accent-fg);
}

/* Hero */

.hero {
  padding: 64px 0 40px;
}

.hero__text {
  max-width: 44rem;
}

.lead {
  font-size: 1.15rem;
  color: var(--fg-muted);
}

.meta {
  font-size: 0.9rem;
  color: var(--fg-muted);
  margin: 0;
}

/* Screenshots */

.shot {
  margin: 0;
}

.shot img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  box-shadow: var(--shot-shadow);
  background: var(--code-bg);
}

.shot figcaption {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 12px;
}

.hero .shot {
  margin-top: 40px;
}

/* Feature rows: picture beside text, alternating sides */

.rows {
  padding: 40px 0 24px;
}

.row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  padding: 40px 0;
}

.row--flip {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
}

.row--flip .shot {
  order: 2;
}

.row p {
  color: var(--fg-muted);
}

@media (max-width: 860px) {
  .row {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 28px 0;
  }

  .row--flip .shot {
    order: 0;
  }
}

/* Plain text sections */

.section {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.section--alt {
  background: var(--bg-alt);
}

.columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
}

@media (max-width: 860px) {
  .columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
}

.text {
  max-width: 42rem;
}

.text p,
.text li {
  color: var(--fg-muted);
}

.steps {
  padding-left: 1.3em;
  margin: 0 0 18px;
}

.steps li {
  margin-bottom: 8px;
  color: var(--fg-muted);
}

.steps li::marker {
  color: var(--fg);
  font-weight: 650;
}

.list {
  padding-left: 1.2em;
  margin: 0;
}

.list li {
  margin-bottom: 10px;
}

.small {
  font-size: 0.88rem;
  color: var(--fg-muted);
}

/* Command blocks */

.code {
  position: relative;
  margin: 16px 0 18px;
}

.code pre {
  margin: 0;
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 8px;
  padding: 16px 18px;
  overflow-x: auto;
  font: 0.86rem/1.7 var(--mono);
}

.code pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: inherit;
}

.copy {
  position: absolute;
  top: 8px;
  right: 8px;
  font: 600 0.78rem var(--font);
  color: var(--code-fg);
  background: #262a31;
  border: 1px solid #3a3f47;
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
}

.copy:hover {
  background: #31363e;
}

/* Footer */

.foot {
  border-top: 1px solid var(--line);
  padding: 32px 0 44px;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.foot__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 32px;
}

.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.foot a {
  color: var(--fg-muted);
}

.foot a:hover {
  color: var(--fg);
}

.foot p {
  margin: 4px 0 0;
}

/* Not-found page */

.notfound {
  padding: 96px 0;
}