/* Aperia guides — shared interactive layer (loaded by /guides/* and /journal/). */
:root{--period:#D79A96;--follicular:#8FB79A;--ovulation:#E6C468;--luteal:#BBA6CB;--watch:#7D5A8C}
@view-transition{navigation:auto}

/* ── Shared header ─────────────────────────────────────────── */
.navlinks{display:flex;align-items:center;gap:18px}
.navlinks a{margin-left:0!important;font-weight:600;font-size:.9rem;text-decoration:none;color:var(--ink,#1A1A1A);opacity:.78;transition:opacity .15s}
.navlinks a:hover,.navlinks a[aria-current]{opacity:1;color:var(--green,#2D5F3F)}
.navlinks .nav-get{opacity:1;background:var(--green,#2D5F3F);color:#F3F0E9!important;border-radius:999px;padding:8px 16px;font-size:.85rem}
.navlinks .nav-get:hover{color:#fff!important}
@media(max-width:420px){.navlinks{gap:12px}.navlinks .hide-xs{display:none}}

/* ── Reading progress ──────────────────────────────────────── */
.g-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:30;pointer-events:none}
.g-progress i{display:block;height:100%;width:100%;transform-origin:0 50%;transform:scaleX(0);
  background:linear-gradient(90deg,var(--period),var(--follicular),var(--ovulation),var(--luteal),var(--watch))}

/* ── Page-load animation ───────────────────────────────────── */
@keyframes g-rise{from{transform:translateY(14px)}to{transform:none}}
@keyframes g-fade{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.g-anim .crumbs,.g-anim article>.eyebrow,.g-anim .ghero .eyebrow,.g-anim .head .eyebrow{animation:g-fade .55s cubic-bezier(.2,.7,.2,1) both}
.g-anim article>h1,.g-anim .ghero h1,.g-anim .head h1{animation:g-rise .7s cubic-bezier(.2,.7,.2,1) both .05s}
.g-anim .standfirst,.g-anim .lead{animation:g-fade .7s cubic-bezier(.2,.7,.2,1) both .14s}
.g-anim .meta,.g-anim .phase-hero,.g-anim .answer{animation:g-fade .7s cubic-bezier(.2,.7,.2,1) both .24s}

/* ── Phase hero (mini ring) ────────────────────────────────── */
.phase-hero{display:flex;align-items:center;gap:18px;background:var(--paper,#fffdf9);border:1px solid var(--line);border-radius:22px;padding:14px 18px;margin:0 0 22px;box-shadow:0 18px 40px -34px rgba(38,75,52,.55)}
.phase-hero svg{flex-shrink:0;width:86px;height:86px;transform:rotate(-90deg)}
.phase-hero .seg{fill:none;stroke-width:13;stroke-linecap:butt;stroke-dasharray:0 100;transition:stroke-dasharray 1s cubic-bezier(.2,.7,.2,1),opacity .4s}
.phase-hero .seg.dim{opacity:.22}
.phase-hero .dot{fill:#fff;stroke:var(--ink,#1A1A1A);stroke-width:2.5;opacity:0;transition:opacity .4s .9s}
.phase-hero.on .dot{opacity:1}
.phase-hero small{display:block;font-size:.7rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--plum,#5B3A52)}
.phase-hero b{display:block;font-family:'Fraunces',serif;font-weight:500;font-size:1.16rem;line-height:1.25;margin:2px 0}
.phase-hero span{font-size:.9rem;color:#555;line-height:1.45;display:block}
.phase-hero .legend{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.phase-hero .legend button{font:inherit;font-size:.74rem;font-weight:600;border:1px solid var(--line);background:#fff;border-radius:999px;padding:3px 10px 3px 8px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:#333}
.phase-hero .legend button::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c)}
.phase-hero .legend button[aria-pressed="true"]{border-color:var(--c);box-shadow:0 0 0 2px color-mix(in srgb,var(--c) 30%,transparent)}

/* ── Mini calculator ───────────────────────────────────────── */
.mini-calc{background:linear-gradient(160deg,#fff 0%,var(--paper,#fffdf9) 100%);border:1px solid var(--line);border-radius:22px;padding:18px 20px;margin:26px 0;box-shadow:0 18px 40px -32px rgba(38,75,52,.5)}
.mini-calc h3{font-family:'Fraunces',serif;font-weight:500;font-size:1.2rem;margin:0 0 4px!important}
.mini-calc .mc-sub{font-size:.9rem;color:#666;margin:0 0 12px!important}
.mini-calc .mc-row{display:flex;flex-wrap:wrap;gap:10px;align-items:end}
.mini-calc label{font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--plum,#5B3A52);display:flex;flex-direction:column;gap:5px}
.mini-calc input[type=date]{font:inherit;font-size:1rem;border:1px solid rgba(26,26,26,.15);border-radius:12px;padding:9px 12px;min-height:44px;background:#fff;color:var(--ink)}
.mini-calc .step{display:flex;align-items:center;border:1px solid rgba(26,26,26,.15);border-radius:12px;background:#fff;min-height:44px}
.mini-calc .step button{font:inherit;font-size:1.15rem;width:40px;height:42px;border:0;background:none;color:var(--green,#2D5F3F);cursor:pointer}
.mini-calc .step output{min-width:30px;text-align:center;font-weight:600;font-size:1rem;color:var(--ink)}
.mc-out{margin-top:14px;border-radius:16px;padding:14px 16px;background:color-mix(in srgb,var(--c,var(--follicular)) 18%,#fff);border-left:5px solid var(--c,var(--follicular));display:none}
.mc-out.show{display:block;animation:g-fade .45s cubic-bezier(.2,.7,.2,1) both}
.mc-out b{font-family:'Fraunces',serif;font-weight:500;font-size:1.15rem;display:block}
.mc-out p{margin:4px 0 8px!important;font-size:.96rem!important}
.mc-out a{font-weight:600;font-size:.92rem}
.mc-bar{display:flex;height:8px;border-radius:99px;overflow:hidden;margin:10px 0 4px;position:relative}
.mc-bar i{display:block;height:100%}
.mc-bar em{position:absolute;top:-4px;width:4px;height:16px;border-radius:3px;background:var(--ink);transform:translateX(-2px);transition:left .5s cubic-bezier(.2,.7,.2,1)}
.mc-note{font-size:.78rem!important;color:#888!important;margin:6px 0 0!important}

/* ── Scroll reveal ─────────────────────────────────────────── */
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}

/* ── TOC: sticky sidebar on wide screens, section bar on small ─ */
.toc a{text-decoration:none;transition:color .2s}
.toc a.active{color:var(--plum,#5B3A52);font-weight:600}
@media(min-width:1240px){
  .toc.side{position:fixed;top:96px;left:calc(50% - 370px - 250px);width:220px;margin:0;max-height:calc(100vh - 130px);overflow:auto;background:transparent;border:0;padding:0}
  .toc.side ol{list-style:none;margin:10px 0 0;border-left:2px solid var(--line)}
  .toc.side li{margin:0;font-size:.86rem;line-height:1.35}
  .toc.side a{display:block;padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;color:#777}
  .toc.side a.active{border-left-color:var(--plum,#5B3A52);color:var(--ink)}
  .secbar{display:none!important}
}
.secbar{position:fixed;left:0;right:0;top:var(--hdr,57px);z-index:9;background:rgba(250,247,242,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transform:translateY(-110%);transition:transform .3s;visibility:hidden}
.secbar.show{transform:none;visibility:visible}
.secbar button{all:unset;box-sizing:border-box;display:flex;align-items:center;gap:8px;width:100%;max-width:740px;margin:0 auto;padding:10px 20px;font-size:.88rem;cursor:pointer}
.secbar button small{font-size:.66rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--plum,#5B3A52);flex-shrink:0}
.secbar button span{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.secbar button i{font-style:normal;color:var(--green);transition:transform .25s}
.secbar.open button i{transform:rotate(180deg)}
.secbar ol{list-style:none;max-width:740px;margin:0 auto;padding:0 20px 12px;display:none}
.secbar.open ol{display:block}
.secbar li a{display:block;padding:8px 0;border-top:1px solid var(--line);text-decoration:none;font-size:.92rem;color:#333}
.secbar li a.active{color:var(--plum,#5B3A52);font-weight:600}

/* ── FAQ ───────────────────────────────────────────────────── */
details summary::after{transition:transform .25s}
details{overflow:hidden}

/* ── Takeaways as checklist ────────────────────────────────── */
.takeaways ul{list-style:none;margin-left:0!important}
.takeaways li{position:relative;padding-left:30px;cursor:pointer;transition:color .2s}
.takeaways li::before{content:"";position:absolute;left:0;top:.28em;width:18px;height:18px;border-radius:6px;border:2px solid var(--green,#2D5F3F);background:#fff;transition:background .2s}
.takeaways li.done{color:#6c7f72}
.takeaways li.done::before{background:var(--green,#2D5F3F) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 8.5l3 3 6-7' fill='none' stroke='%23fff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat}
.tk-hint{font-size:.78rem!important;color:#6c7f72!important;margin:4px 0 0!important}

/* ── Back to top ───────────────────────────────────────────── */
.g-top{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom));width:46px;height:46px;border-radius:50%;border:0;background:var(--green,#2D5F3F);color:#F3F0E9;font-size:1.2rem;cursor:pointer;box-shadow:0 12px 26px -12px rgba(38,75,52,.7);opacity:0;transform:translateY(12px) scale(.9);pointer-events:none;transition:opacity .25s,transform .25s;z-index:20}
.g-top.show{opacity:1;transform:none;pointer-events:auto}

/* ── Journal: guides shelf ─────────────────────────────────── */
.shelf{margin:34px 0 8px}
.shelf-head{display:flex;justify-content:space-between;align-items:end;gap:12px;flex-wrap:wrap}
.shelf-head h2{font-family:'Fraunces',serif;font-weight:500;font-size:1.6rem;line-height:1.15}
.shelf-head a{font-weight:600;font-size:.92rem}
.shelf-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:16px}
.gtile{position:relative;display:flex;flex-direction:column;gap:6px;background:var(--white,#fff);border-radius:20px;padding:20px 20px 18px;text-decoration:none;color:var(--ink);box-shadow:0 12px 30px -22px rgba(38,75,52,.3);border:1px solid var(--line);overflow:hidden;transition:transform .25s,box-shadow .25s}
.gtile::before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:var(--c,var(--follicular))}
.gtile:hover{transform:translateY(-4px);box-shadow:0 20px 40px -24px rgba(38,75,52,.4)}
.gtile small{font-size:.68rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--plum)}
.gtile b{font-family:'Fraunces',serif;font-weight:500;font-size:1.14rem;line-height:1.22}
.gtile span{font-size:.9rem;color:var(--grey);line-height:1.45}
.gtile em{font-style:normal;color:var(--green);font-weight:600;font-size:.88rem;margin-top:auto;padding-top:6px}
.gtile.calc{background:radial-gradient(120% 140% at 0% 0%,#3b7752 0%,var(--green,#2D5F3F) 55%,#1f4630 100%);color:#F3F0E9;border:0}
.gtile.calc::before{display:none}
.gtile.calc small{color:#c8dccc}.gtile.calc span{color:#d7e6da}.gtile.calc em{color:#F3F0E9}
.articles-h{font-family:'Fraunces',serif;font-weight:500;font-size:1.6rem;margin:44px 0 0}
@media(max-width:860px){
  .shelf-row{grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:78%;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 14px;margin-left:-2px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .shelf-row::-webkit-scrollbar{display:none}
  .gtile{scroll-snap-align:start}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
  @view-transition{navigation:none}
}