/* ==========================================================
   SecureYourKidsDevice.com — global styles
   Bold & protective: editorial serif + technical sans
   ========================================================== */

:root {
  /* Ink & paper */
  --ink: oklch(0.18 0.03 250);
  --ink-2: oklch(0.32 0.03 250);
  --ink-3: oklch(0.50 0.02 250);
  --paper: oklch(0.985 0.005 85);
  --paper-2: oklch(0.96 0.008 85);
  --line: oklch(0.88 0.01 250);
  --line-2: oklch(0.92 0.008 250);

  /* Protective blue */
  --shield: oklch(0.38 0.12 250);
  --shield-2: oklch(0.55 0.15 245);
  --shield-tint: oklch(0.95 0.03 245);

  /* Safety accents */
  --go: oklch(0.52 0.13 150);
  --go-tint: oklch(0.95 0.04 150);
  --stop: oklch(0.55 0.19 25);
  --stop-tint: oklch(0.96 0.03 25);
  --warn: oklch(0.72 0.14 75);
  --warn-tint: oklch(0.96 0.04 75);

  /* Type */
  --serif: "Instrument Serif", "Cormorant Garamond", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, Menlo, monospace;

  /* Layout */
  --maxw: 1200px;
  --gutter: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }

/* ---------- Typography ---------- */
.display,
h1.display {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.02em;
  font-size: clamp(48px, 7vw, 104px);
  margin: 0;
}
.display em { font-style: italic; color: var(--shield-2); }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.015em; }
h2 { font-size: clamp(32px, 4vw, 56px); line-height: 1.02; margin: 0 0 0.4em; }
h3 { font-size: clamp(22px, 2.3vw, 30px); line-height: 1.1; margin: 0 0 0.4em; }
h4 { font-size: 20px; line-height: 1.2; margin: 0 0 0.3em; }

p { margin: 0 0 1em; text-wrap: pretty; max-width: 65ch; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 20px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 24px; height: 1px;
  background: currentColor;
  display: inline-block;
}

.lede { font-size: clamp(19px, 1.5vw, 22px); line-height: 1.45; color: var(--ink-2); max-width: 60ch; }

.mono { font-family: var(--mono); font-size: 13px; letter-spacing: 0.02em; }

/* ---------- Layout primitives ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(72px, 9vw, 128px) 0; border-top: 1px solid var(--line); }
.section:first-of-type { border-top: 0; }
.section.ink { background: var(--ink); color: var(--paper); }
.section.ink .eyebrow { color: oklch(0.75 0.02 250); }
.section.ink h2, .section.ink h3 { color: var(--paper); }
.section.ink p { color: oklch(0.82 0.015 250); }
.section.ink a { color: var(--paper); }

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklch, var(--paper) 92%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -0.01em;
}
.logo-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 50%;
  flex: 0 0 34px;
}
.logo-mark svg { width: 26px; height: 26px; }
.logo-word { display: block; font-size: 15px; line-height: 1.1; }
.logo-text > span:first-child { font-size: 15px; }
.logo small {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: block;
  margin-top: 2px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--sans);
  font-size: 14px;
}
.nav-links a {
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 6px;
  color: var(--ink-2);
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { background: var(--paper-2); color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 500; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s;
}
.nav-cta:hover { background: var(--shield); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  color: var(--ink);
}

@media (max-width: 860px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-open .nav-links {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px var(--gutter);
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }
  .nav-open .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line-2); }
  .nav-open .nav-cta { display: inline-flex; margin: 12px 0 4px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  font-size: 15px;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: transform 0.1s, background 0.15s;
  font-family: var(--sans);
}
.btn:hover { background: var(--shield); border-color: var(--shield); }
.btn:active { transform: translateY(1px); }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn.ghost:hover { background: var(--paper-2); border-color: var(--ink-3); }
.btn.on-ink {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}
.btn.on-ink:hover { background: oklch(0.92 0.008 85); }
.btn.on-ink.ghost {
  background: transparent;
  color: var(--paper);
  border-color: oklch(0.4 0.02 250);
}
.btn.on-ink.ghost:hover { background: oklch(0.25 0.03 250); border-color: var(--paper); }

/* ---------- Hero ---------- */
.hero {
  padding: clamp(56px, 8vw, 120px) 0 clamp(48px, 7vw, 96px);
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: end;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
}
.hero-meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-meta .item { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }
.hero-meta .item b { display: block; font-family: var(--serif); font-size: 28px; color: var(--ink); font-weight: 400; letter-spacing: -0.01em; margin-bottom: 2px; }

.hero-cta-row { display: flex; gap: 12px; margin-top: 36px; flex-wrap: wrap; }

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
@media (max-width: 860px) { .card-grid { grid-template-columns: 1fr; } }
.card-grid > .card { background: var(--paper); padding: 32px; }

.card {
  background: var(--paper);
  border-radius: 10px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card .index {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.12em;
}
.card h3 { margin: 4px 0 8px; }
.card p { color: var(--ink-2); margin: 0; font-size: 15px; }
.card .card-foot {
  margin-top: auto;
  padding-top: 20px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.card.link { text-decoration: none; color: inherit; cursor: pointer; }
.card.link:hover { background: var(--paper-2); }
.card.link:hover .card-foot .arrow { transform: translateX(4px); }
.arrow { transition: transform 0.15s; display: inline-block; }

/* ---------- Pill / badges ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--paper-2);
  color: var(--ink-2);
  border: 1px solid var(--line);
}
.pill.go    { background: var(--go-tint);    color: var(--go);    border-color: color-mix(in oklch, var(--go) 25%, transparent); }
.pill.stop  { background: var(--stop-tint);  color: var(--stop);  border-color: color-mix(in oklch, var(--stop) 25%, transparent); }
.pill.warn  { background: var(--warn-tint);  color: var(--warn);  border-color: color-mix(in oklch, var(--warn) 25%, transparent); }
.pill.shield{ background: var(--shield-tint);color: var(--shield);border-color: color-mix(in oklch, var(--shield) 25%, transparent); }

/* ---------- Footer ---------- */
.footer {
  background: var(--ink);
  color: oklch(0.8 0.02 250);
  padding: 72px 0 36px;
}
.footer a { color: oklch(0.9 0.015 250); text-decoration: none; }
.footer a:hover { color: var(--paper); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid oklch(0.28 0.025 250);
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
.footer h5 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: oklch(0.65 0.02 250);
  margin: 0 0 18px;
  font-weight: 400;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; font-size: 15px; }
.footer .mission { font-family: var(--serif); font-size: 22px; line-height: 1.2; color: var(--paper); letter-spacing: -0.01em; max-width: 32ch; }
.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: oklch(0.6 0.02 250);
}

/* ---------- Forms ---------- */
.input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: var(--sans);
  font-size: 15px;
  background: var(--paper);
  color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input:focus {
  outline: none;
  border-color: var(--shield-2);
  box-shadow: 0 0 0 4px color-mix(in oklch, var(--shield-2) 18%, transparent);
}
label.field {
  display: flex; flex-direction: column; gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- Utilities ---------- */
.rule { height: 1px; background: var(--line); margin: 0; border: 0; }
.center { text-align: center; }
.stack-16 > * + * { margin-top: 16px; }
.stack-24 > * + * { margin-top: 24px; }
.stack-32 > * + * { margin-top: 32px; }

/* ---------- Numbered list (guides) ---------- */
.steps { list-style: none; padding: 0; margin: 0; counter-reset: step; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.steps li {
  counter-increment: step;
  background: var(--paper);
  padding: 24px 28px 24px 88px;
  position: relative;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 28px; top: 24px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--shield-2);
  letter-spacing: 0.05em;
}
.steps li h4 { margin: 0 0 6px; font-family: var(--sans); font-size: 17px; font-weight: 600; letter-spacing: -0.005em; }
.steps li p { margin: 0; color: var(--ink-2); font-size: 15px; }
.steps li .note { margin-top: 10px; font-family: var(--mono); font-size: 12px; color: var(--ink-3); padding: 10px 12px; background: var(--paper-2); border-radius: 6px; }

/* ---------- Callout ---------- */
.callout {
  padding: 20px 24px;
  border-radius: 10px;
  border: 1px solid;
  display: flex; gap: 16px; align-items: flex-start;
  font-size: 15px;
}
.callout.shield { background: var(--shield-tint); border-color: color-mix(in oklch, var(--shield-2) 30%, transparent); color: var(--shield); }
.callout.go     { background: var(--go-tint);     border-color: color-mix(in oklch, var(--go) 30%, transparent);     color: var(--go); }
.callout.warn   { background: var(--warn-tint);   border-color: color-mix(in oklch, var(--warn) 40%, transparent);   color: oklch(0.45 0.12 75); }
.callout .icon { flex: 0 0 20px; margin-top: 2px; }
.callout b { display: block; margin-bottom: 4px; }

/* ---------- Image placeholder ---------- */
.placeholder {
  background-color: var(--paper-2);
  background-image:
    repeating-linear-gradient(
      135deg,
      transparent 0 14px,
      color-mix(in oklch, var(--ink) 5%, transparent) 14px 15px
    );
  border: 1px solid var(--line);
  border-radius: 10px;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.placeholder.has-img { background-image: none; border: 0; }
.placeholder.has-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.placeholder .tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 8px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Breadcrumb ---------- */
.crumbs { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.crumbs a { text-decoration: none; color: var(--ink-3); }
.crumbs a:hover { color: var(--ink); }
.crumbs .sep { opacity: 0.5; }

/* ---------- Article body ---------- */
.prose { max-width: 68ch; margin: 0 auto; }
.prose p { font-size: 18px; line-height: 1.65; color: var(--ink-2); }
.prose h2 { font-size: 36px; margin-top: 2em; }
.prose h3 { font-size: 24px; margin-top: 1.6em; }
.prose ul { padding-left: 20px; }
.prose ul li { margin-bottom: 8px; color: var(--ink-2); }
.prose blockquote {
  border-left: 3px solid var(--shield-2);
  padding: 4px 0 4px 24px;
  margin: 32px 0;
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.3;
  color: var(--ink);
  font-style: italic;
}

/* ---------- Nav/hero shield glyph ---------- */
.shield-glyph { width: 100%; height: 100%; }