/* =====================================================================
   SparkIQ — shared styles for content pages (privacy, guides).
   Same design tokens as index.html; CSP: self-hosted, no external assets.
   ===================================================================== */
:root, .night{
  --bg:#0b1026; --bg2:#10173a; --surface:#161e44; --surface2:#1d2752; --raise:#232e60;
  --line:rgba(255,255,255,.10); --line2:rgba(255,255,255,.18);
  --ink:#f1f4ff; --ink2:#c6d0ee; --dim:#a3b2d9;
  --spark:#ffd166; --spark2:#ffb703; --on-spark:#1d1405;
  --peri:#8f9bff; --good:#66e6a6; --pink:#ff8fd0; --sky:#6fd0ff;
  --link:#aab4ff; --good-ink:#7dedb5; --pink-ink:#ffa6da;
  --shadow:0 30px 60px -30px rgba(0,0,0,.65);
  --shadow-sm:0 12px 30px -18px rgba(0,0,0,.6);
  --glass:rgba(11,16,38,.72);
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#eef4ff; --bg2:#ffffff; --surface:#ffffff; --surface2:#f5f8ff; --raise:#ffffff;
  --line:rgba(23,48,92,.10); --line2:rgba(23,48,92,.18);
  --ink:#17305c; --ink2:#2f4775; --dim:#52648a;
  --spark:#ffc93c; --spark2:#ffb703; --on-spark:#1d1405;
  --peri:#4550d0; --good:#2fa85a; --pink:#e0529f; --sky:#1cb0f6;
  --link:#1d5fb8; --good-ink:#1b7a43; --pink-ink:#b3307a;
  --shadow:0 30px 60px -32px rgba(23,48,92,.35);
  --shadow-sm:0 12px 28px -18px rgba(23,48,92,.35);
  --glass:rgba(255,255,255,.78); --focus:#1d5fb8;
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--ink);
  font:17px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:var(--link);text-underline-offset:3px}
h1,h2,h3,.display{font-family:ui-rounded,"SF Pro Rounded","Nunito","Segoe UI Variable Display",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink)}
h1,h2,h3{margin:0;letter-spacing:-.02em;line-height:1.1;font-weight:800}
p{margin:0}
:focus-visible{outline:3px solid var(--focus,#6fd0ff);outline-offset:3px;border-radius:10px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--spark);color:var(--on-spark);padding:12px 18px;border-radius:12px;font-weight:800;text-decoration:none}
.skip:focus{top:12px}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.wrap{padding:0 32px}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;border-radius:999px;
  padding:12px 24px;font:inherit;font-weight:800;font-size:1rem;text-decoration:none;cursor:pointer;border:0;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease;white-space:nowrap}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:linear-gradient(180deg,#ffdb7e,var(--spark2));color:var(--on-spark);
  box-shadow:0 1px 0 rgba(255,255,255,.6) inset,0 12px 28px -12px rgba(255,183,3,.75)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 1px 0 rgba(255,255,255,.6) inset,0 18px 34px -14px rgba(255,183,3,.9)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--line2)}
.btn-ghost:hover{background:var(--surface2)}
.btn-lg{min-height:56px;padding:14px 30px;font-size:1.06rem}
.btn:active{transform:scale(.98)}

/* ---------- nav ---------- */
.site-nav{position:sticky;top:0;z-index:50;background:var(--glass);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);
  border-bottom:1px solid var(--line)}
.site-nav .wrap{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:900;font-size:1.2rem;letter-spacing:-.01em;min-height:44px}
.brand svg{width:34px;height:34px}
.brand .iq{color:var(--spark2)}
:root[data-theme="light"] .brand .iq{color:#a86a00}
.nav-links{display:none;gap:4px;margin-left:auto}
.nav-links a{color:var(--ink2);text-decoration:none;font-weight:650;font-size:.95rem;padding:10px 12px;border-radius:10px;min-height:44px;display:inline-flex;align-items:center}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink);background:var(--surface2)}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
@media(min-width:1000px){.nav-links{display:flex}.nav-actions{margin-left:8px}}
.icon-btn{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;border:0;cursor:pointer;background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--line2)}
.icon-btn:hover{background:var(--surface2)}
.icon-btn svg{width:20px;height:20px}
.icon-btn .i-moon{display:none}
:root[data-theme="light"] .icon-btn .i-moon{display:block}
:root[data-theme="light"] .icon-btn .i-sun{display:none}
.nav-cta{min-height:44px;padding:10px 18px}

/* ---------- section scaffolding ---------- */
section{position:relative;padding:56px 0}
@media(min-width:900px){section{padding:72px 0}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--peri);margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:3px;background:currentColor}
.h2{font-size:clamp(1.8rem,4vw,2.6rem)}
.lede{font-size:clamp(1.05rem,1.8vw,1.2rem);color:var(--dim);max-width:62ch;margin-top:16px}
.center{text-align:center}
.center .lede{margin-left:auto;margin-right:auto}
.head{margin-bottom:40px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:var(--shadow-sm)}
.checks{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:12px}
.checks li{position:relative;padding-left:36px;color:var(--ink2)}
.checks li::before{content:"";position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:50%;
  background:color-mix(in srgb,var(--good) 20%,transparent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2335b56e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/16px no-repeat}
.checks b{color:var(--ink)}

/* ---------- page hero ---------- */
.page-hero{padding:48px 0 8px}
@media(min-width:900px){.page-hero{padding:72px 0 8px}}
.page-hero .h1{font-size:clamp(2.1rem,5vw,3.15rem);letter-spacing:-.03em;margin:16px 0 0;line-height:1.08}
.page-hero .lede{margin-top:18px}
.updated{color:var(--dim);font-size:.85rem;margin-top:16px;font-weight:650}
.back{display:inline-flex;align-items:center;gap:8px;color:var(--link);text-decoration:none;font-weight:700}
.back svg{width:16px;height:16px;transform:rotate(180deg)}

/* ---------- prose / article content ---------- */
.prose{max-width:74ch}
.prose h2{font-size:1.5rem;margin:44px 0 14px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.15rem;margin:26px 0 10px;color:var(--ink)}
.prose p{color:var(--ink2);margin:0 0 14px;line-height:1.7}
.prose ul,.prose ol{color:var(--ink2);margin:0 0 16px;padding-left:1.3em;line-height:1.7}
.prose li{margin-bottom:8px}
.prose li::marker{color:var(--peri)}
.prose strong{color:var(--ink)}
.prose a{font-weight:650}

/* ---------- callouts ---------- */
.callout{display:flex;gap:14px;align-items:flex-start;padding:20px 22px;border-radius:20px;margin:24px 0;background:rgba(255,209,102,.08);border:1px solid rgba(255,209,102,.28);color:var(--ink2)}
.callout svg{width:24px;height:24px;flex:none;color:var(--spark);margin-top:2px}
.callout p{margin:0;color:var(--ink2)}
.callout p+p{margin-top:8px}
.callout b{color:var(--ink)}
.callout.good{background:rgba(102,230,166,.1);border-color:rgba(102,230,166,.3)}
.callout.good svg{color:var(--good)}
.callout.info{background:rgba(143,155,255,.1);border-color:rgba(143,155,255,.3)}
.callout.info svg{color:var(--peri)}

/* ---------- table of contents ---------- */
.toc{padding:20px 22px;border-radius:20px;background:var(--surface);border:1px solid var(--line);margin:30px 0}
.toc b{display:block;margin-bottom:10px;color:var(--ink);font-size:.82rem;text-transform:uppercase;letter-spacing:.06em}
.toc ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.toc a{color:var(--link);text-decoration:none;font-weight:650}
.toc a:hover{text-decoration:underline}

/* ---------- kid box ---------- */
.kid-box{margin:28px 0;padding:26px;border-radius:24px;background:linear-gradient(135deg,color-mix(in srgb,var(--pink) 12%,var(--surface)),var(--surface));border:1px solid var(--line)}
.kid-box h3{display:flex;align-items:center;gap:10px;font-size:1.2rem;margin-bottom:12px}
.kid-box svg{width:34px;height:34px;flex:none}

/* ---------- guide cards ---------- */
.guide-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:700px){.guide-grid{grid-template-columns:repeat(2,1fr)}}
.guide-card{display:flex;flex-direction:column;padding:28px;border-radius:24px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);text-decoration:none;color:inherit;transition:transform .2s ease}
.guide-card:hover{transform:translateY(-3px)}
.guide-card .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:14px;background:color-mix(in srgb,var(--peri) 18%,transparent);color:var(--peri)}
.guide-card .ic svg{width:26px;height:26px}
.guide-card h3{font-size:1.25rem;margin-bottom:8px}
.guide-card p{color:var(--dim);font-size:.96rem;flex:1;line-height:1.5}
.guide-card .go{margin-top:16px;font-weight:800;color:var(--link);display:inline-flex;align-items:center;gap:6px;font-size:.95rem}

/* ---------- week plan ---------- */
.week-grid{display:grid;gap:14px;margin:24px 0}
.week{padding:20px 22px;border-radius:20px;background:var(--surface);border:1px solid var(--line)}
.week b{display:block;color:var(--spark2);font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}
:root:not([data-theme="light"]) .week b{color:var(--spark)}
.week h3{font-size:1.08rem;margin-bottom:8px}
.week p{color:var(--dim);margin:0;line-height:1.55}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:48px 0 56px;color:var(--dim);font-size:.92rem}
.foot{display:grid;gap:28px}
@media(min-width:860px){.foot{grid-template-columns:1.2fr 1fr;gap:48px}}
.foot nav ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:4px 8px}
.foot nav a{color:var(--ink2);text-decoration:none;font-weight:650;display:inline-flex;min-height:44px;align-items:center;padding:0 8px;border-radius:8px}
.foot nav a:hover{color:var(--ink);background:var(--surface2)}
.fine{margin-top:14px;line-height:1.65;max-width:70ch}
.foot .brand{font-size:1.1rem}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}