@import url("https://fonts.googleapis.com/css2?family=Instrument+Sans:wght@400;500;600&family=Instrument+Serif:ital@0;1&display=swap");

:root {
  --paper: #f4f0e6;
  --paper-deep: #ebe5d6;
  --ink: #1c211d;
  --ink-soft: #5a6159;
  --rule: #cfc7b4;
  --green: #1e5c42;
  --green-dark: #164532;
  --lime: #d9f28a;
  --good: #2f7a4f;
  --alert: #b8452f;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Instrument Sans", system-ui, sans-serif;
  --measure: 36rem;
  --radius: 4px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header / footer ---------- */

.site-header,
footer {
  max-width: 68rem;
  margin: 0 auto;
  padding: 20px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.site-header {
  border-bottom: 1px solid var(--ink);
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--serif);
  font-size: 1.625rem;
  line-height: 1;
}

.header-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.ghost-link {
  color: var(--ink);
  font-weight: 500;
  font-size: 0.9375rem;
  text-underline-offset: 4px;
}

.ghost-link:hover {
  color: var(--green);
}

main {
  max-width: 68rem;
  margin: 0 auto;
  padding: 0 32px 80px;
}

/* ---------- Type ---------- */

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  line-height: 1;
  margin: 0 0 24px;
}

h1 em {
  display: block;
  color: var(--green);
}

h2 {
  font-size: 2.25rem;
  line-height: 1.1;
  margin: 0 0 12px;
}

h3 {
  font-size: 1.5rem;
  line-height: 1.15;
  margin: 0 0 8px;
}

.lede {
  font-size: 1.1875rem;
  color: var(--ink-soft);
  max-width: var(--measure);
  margin: 0 0 32px;
}

.muted {
  color: var(--ink-soft);
}

.small {
  font-size: 0.8125rem;
}

.hidden {
  display: none !important;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: 64px;
  align-items: center;
  padding: 72px 0 80px;
}

.cta {
  display: inline-block;
  padding: 14px 22px;
  background: var(--green);
  color: var(--paper);
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background 150ms ease;
}

.cta:hover {
  background: var(--green-dark);
}

.hero-figure {
  margin: 0;
  border: 1px solid var(--ink);
  background: #fbf8f1;
  padding: 16px 16px 12px;
}

#heroCanvas {
  display: block;
  width: 100%;
  height: auto;
}

.hero-figure figcaption {
  border-top: 1px solid var(--rule);
  margin-top: 12px;
  padding-top: 10px;
  font-size: 0.8125rem;
  color: var(--ink-soft);
}

.hero-figure figcaption span {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--ink);
  margin-right: 4px;
}

/* ---------- How it works ---------- */

.how {
  border-top: 1px solid var(--ink);
  padding: 32px 0 72px;
}

.section-label {
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0 0 32px;
}

.how-list {
  list-style: none;
  counter-reset: how;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.how-list li {
  counter-increment: how;
  padding: 0 32px;
  border-left: 1px solid var(--rule);
}

.how-list li:first-child {
  padding-left: 0;
  border-left: 0;
}

.how-list li::before {
  content: counter(how);
  display: block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 3.5rem;
  line-height: 1;
  color: var(--green);
  margin-bottom: 16px;
}

.how-list p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 30ch;
}

/* ---------- Sign up ---------- */

.signup {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  padding: 48px;
  background: var(--paper-deep);
  border-radius: var(--radius);
}

.signup-intro > p {
  margin: 0;
  max-width: var(--measure);
}

.onboarding {
  margin: 28px 0 0;
  padding: 0 0 0 1.25rem;
  display: grid;
  gap: 12px;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

.onboarding li::marker {
  font-family: var(--serif);
  color: var(--green);
}

.onboarding strong {
  color: var(--ink);
  font-weight: 600;
}

form,
.controls {
  display: grid;
  gap: 18px;
  align-content: start;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
}

input:not([type="checkbox"]):not([type="range"]),
select {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-weight: 400;
  font-size: 1rem;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: #fbf8f1;
  color: var(--ink);
}

input::placeholder {
  color: #9a9a8c;
}

input:focus-visible,
select:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

input[type="checkbox"] {
  accent-color: var(--green);
  margin-top: 3px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.consent,
.toggle {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--ink-soft);
}

/* ---------- Buttons ---------- */

button {
  font: inherit;
  font-weight: 600;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  padding: 12px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease;
}

button:hover:not(:disabled) {
  background: var(--ink);
  color: var(--paper);
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

button.primary {
  background: var(--green);
  border-color: var(--green);
  color: var(--paper);
}

button.primary:hover:not(:disabled) {
  background: var(--green-dark);
  border-color: var(--green-dark);
}

.text-button {
  border: 0;
  padding: 4px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.text-button:hover:not(:disabled) {
  background: transparent;
  color: var(--green);
}

.error {
  color: var(--alert);
  font-size: 0.875rem;
  margin: 0;
}

/* ---------- Tracker ---------- */

.notice {
  grid-column: 1 / -1;
  padding: 14px 18px;
  background: var(--lime);
  border-radius: var(--radius);
}

.tracker {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.85fr);
  gap: 32px;
  align-items: start;
  padding-top: 40px;
}

.camera-card {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.camera-top {
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  color: #b9bdb4;
}

.pill.on {
  color: var(--lime);
}

.stage {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #121512;
}

video,
canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

#heroCanvas {
  position: static;
  transform: none;
}

#placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  color: #8d9289;
}

.status {
  padding: 14px 18px;
  font-weight: 600;
}

.status.good {
  color: var(--lime);
}

.status.bad {
  color: #f0a08c;
}

.status.away {
  color: #8d9289;
}

.banner {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 60px;
  background: var(--paper);
  color: var(--ink);
  padding: 12px 16px;
  border-radius: var(--radius);
}

.controls {
  padding: 0;
}

.controls h2 {
  font-size: 1.875rem;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr 4rem;
  gap: 12px;
  align-items: center;
}

input[type="range"] {
  accent-color: var(--green);
}

output {
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--ink-soft);
}

.actions button {
  flex: 1;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.stats div {
  padding: 14px 0;
  display: grid;
}

.stats div + div {
  border-left: 1px solid var(--rule);
  padding-left: 16px;
}

.stats strong {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 2.5rem;
  line-height: 1;
}

.stats span {
  font-size: 0.8125rem;
  color: var(--ink-soft);
}

.debrief-panel {
  padding: 20px;
  background: var(--paper-deep);
  border-radius: var(--radius);
}

.debrief-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.debrief-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.9375rem;
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
}

.debrief-list li span:first-child {
  color: var(--ink-soft);
}

.debrief-recap {
  margin: 12px 0 0;
  font-size: 0.9375rem;
}

details {
  font-size: 0.875rem;
  color: var(--ink-soft);
}

details summary {
  cursor: pointer;
  padding: 4px 0;
}

#metrics {
  padding-left: 20px;
  line-height: 1.8;
  margin: 8px 0 0;
}

footer {
  border-top: 1px solid var(--ink);
  font-size: 0.8125rem;
  color: var(--ink-soft);
}

footer span:first-child {
  font-family: var(--serif);
  font-size: 1.125rem;
  color: var(--ink);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .hero,
  .signup,
  .tracker {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 40px;
    padding: 48px 0 56px;
  }

  .hero-figure {
    max-width: 420px;
  }

  .how-list {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .how-list li {
    padding: 0;
    border-left: 0;
  }

  .signup {
    gap: 32px;
    padding: 32px;
  }
}

@media (max-width: 520px) {
  .two-col {
    grid-template-columns: 1fr;
  }

  .site-header,
  footer,
  main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .signup {
    padding: 24px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}