/* ============================================================
   Shared chrome for the 15 Brain Waves deck series.
   Structural rules only — identical across every deck (verified
   byte-for-byte across all 15 files before extraction). Each
   deck's own <style> block keeps the small set of content-card
   rules that are intentionally tuned per deck (max-widths,
   extra decorative elements, stagger delays).
   ============================================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--w:rgba(238,244,255,0.93);--s:rgba(160,198,248,1);--s2:rgba(160,198,248,0.36);--r:rgba(100,155,230,0.8)}
body{font-family:'Work Sans',sans-serif;background:#03060f;overflow:hidden;width:100vw;height:100vh;cursor:none;user-select:none}

#cur{position:fixed;z-index:9999;pointer-events:none;transform:translate(-50%,-50%)}
#cd{width:7px;height:7px;border-radius:50%;background:var(--s);box-shadow:0 0 18px rgba(160,198,248,.58)}
#cr{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:32px;height:32px;border-radius:50%;border:1px solid rgba(160,198,248,.2);transition:all .25s}

#bg{position:fixed;inset:0;z-index:0;background-image:url('./bg.jpg');background-size:cover;background-position:center;transform:scale(1.07);will-change:transform}
.sc{position:fixed;inset:0;z-index:1;background:radial-gradient(ellipse 78% 62% at 50% 48%,rgba(4,8,20,.5),rgba(3,6,16,.86)),linear-gradient(180deg,rgba(4,8,20,.28),rgba(3,6,16,.68))}

#bar{position:fixed;top:0;left:0;z-index:500;height:2px;background:linear-gradient(90deg,var(--r),var(--s));box-shadow:0 0 16px rgba(160,198,248,.38);transition:width .75s cubic-bezier(.4,0,.2,1)}

.orb{position:fixed;border-radius:50%;pointer-events:none;filter:blur(110px);z-index:1}
.oa{width:500px;height:500px;top:-170px;right:-120px;background:radial-gradient(circle,rgba(40,70,160,.1),transparent 70%);animation:od 25s ease-in-out infinite}
.ob{width:420px;height:420px;bottom:-120px;left:-90px;background:radial-gradient(circle,rgba(30,55,140,.09),transparent 70%);animation:od 20s ease-in-out infinite reverse}
@keyframes od{0%,100%{transform:translate(0,0)}38%{transform:translate(26px,18px)}72%{transform:translate(-16px,28px)}}

#pts{position:fixed;inset:0;z-index:2;pointer-events:none;overflow:hidden}
.pt{position:absolute;border-radius:50%;animation:pr linear infinite;opacity:0}
@keyframes pr{0%{transform:translateY(108vh) scale(0);opacity:0}8%{opacity:.42}90%{opacity:.15}100%{transform:translateY(-8vh) scale(1.4);opacity:0}}

.tri{display:flex;flex-direction:column;align-items:center;gap:5px;margin:0 auto 28px}
.tri-bar{height:1.5px;border-radius:1px;background:var(--s2)}
.tri-bar:nth-child(1){width:36px}
.tri-bar:nth-child(2){width:24px}
.tri-bar:nth-child(3){width:14px}

#stage{position:relative;z-index:10;width:100vw;height:100vh;display:grid;place-items:center;overflow:hidden}
.slide{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:52px 80px;text-align:center;pointer-events:none;opacity:0;clip-path:inset(0 0 0 100%);transition:opacity .65s cubic-bezier(.4,0,.2,1),clip-path .65s cubic-bezier(.4,0,.2,1)}
.slide.on{opacity:1;clip-path:inset(0 0 0 0%);pointer-events:all}
.slide.off{opacity:0;clip-path:inset(0 100% 0 0);transition:opacity .34s ease,clip-path .34s ease}

.lbl{font-size:9px;font-weight:400;letter-spacing:5px;text-transform:uppercase;color:var(--s2);margin-bottom:26px}
.h1{font-family:'DM Serif Display',serif;font-weight:400;font-size:clamp(36px,5.2vw,70px);line-height:1.1;color:var(--w);text-shadow:0 0 80px rgba(160,198,248,.12);margin-bottom:16px}
.h1 em{font-style:italic;color:var(--s)}
.h1 strong{font-weight:400}
.h2{font-family:'DM Serif Display',serif;font-weight:400;font-size:clamp(22px,3.4vw,48px);line-height:1.2;color:var(--w);margin-bottom:22px}
.h2 em{font-style:italic;color:var(--s)}
.sub{font-size:clamp(10px,1vw,13px);font-weight:300;letter-spacing:3.5px;text-transform:uppercase;color:var(--s2);margin-bottom:44px}
.bd{font-family:'DM Serif Display',serif;font-size:clamp(16px,1.95vw,26px);line-height:1.84;color:rgba(215,228,248,.83);max-width:740px}
.bd em{font-style:italic;color:rgba(190,220,255,.97)}
.bd strong{font-weight:400;color:var(--w)}

/* myth/reality two-col (fa-half sub-rules are identical everywhere used;
   .fa / .fa-text sizing is tuned per deck and stays in each file) */
.fa-half{padding:20px 26px}
.fa-half:first-child{background:rgba(255,80,60,.05);border-right:1px solid rgba(160,198,248,.1)}
.fa-half:last-child{background:rgba(80,160,255,.05)}
.fa-label{font-size:8px;font-weight:500;letter-spacing:4px;text-transform:uppercase;margin-bottom:8px}
.fa-half:first-child .fa-label{color:rgba(255,120,100,.4)}
.fa-half:last-child .fa-label{color:var(--s2)}

/* frequency list sub-rules (list container sizing stays per deck) */
.freq-dot{width:4px;height:4px;border-radius:50%;background:var(--s2);flex-shrink:0;box-shadow:0 0 6px rgba(160,198,248,.4)}
.freq-text{font-family:'DM Serif Display',serif;font-style:italic;font-size:clamp(13px,1.4vw,18px);color:rgba(200,215,240,.7)}
.freq:nth-child(1){animation-delay:.08s}
.freq:nth-child(2){animation-delay:.2s}
.freq:nth-child(3){animation-delay:.32s}
@keyframes fi{to{opacity:1}}

/* not / just list */
.nw{display:flex;align-items:center;gap:14px;opacity:0;animation:ni .44s ease forwards}
.nw:nth-child(1){animation-delay:.1s}
.nw:nth-child(2){animation-delay:.24s}
.nw:nth-child(3){animation-delay:.38s}
.nw:nth-child(4){animation-delay:.52s}
@keyframes ni{to{opacity:1}}
.nw-tag{font-size:9px;font-weight:500;letter-spacing:2px;text-transform:uppercase;flex-shrink:0;width:52px;text-align:right}
.nw-tag.no{color:rgba(255,120,100,.35)}
.nw-tag.yes{color:var(--s2)}
.nw-text{font-family:'DM Serif Display',serif;font-style:italic;font-size:clamp(13px,1.4vw,18px);color:rgba(200,215,240,.75)}

/* rule card (used by decks 01, 03–15; .rule-num is a deck-specific addition
   defined in that deck's own <style> block when present) */
.rule-card{width:100%;max-width:760px;background:rgba(6,12,28,.48);border:1px solid rgba(160,198,248,.14);border-radius:4px;backdrop-filter:blur(14px);padding:32px 40px;margin:0 auto;text-align:left;position:relative;overflow:hidden}
.rule-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--s2),transparent)}
.rule-label{font-size:9px;font-weight:500;letter-spacing:4px;text-transform:uppercase;color:var(--s2);margin-bottom:14px}
.rule-title{font-family:'DM Serif Display',serif;font-style:italic;font-size:clamp(20px,2.6vw,36px);color:var(--s);line-height:1.2;margin-bottom:16px;max-width:90%}
.rule-body{font-family:'DM Serif Display',serif;font-size:clamp(14px,1.55vw,21px);line-height:1.7;color:rgba(210,224,245,.78)}
.rule-body em{font-style:italic;color:rgba(190,220,255,.95)}
.rule-body strong{font-weight:400;color:rgba(230,240,255,.9)}

/* good/closing card (used by most decks) */
.good{background:linear-gradient(135deg,rgba(8,16,36,.62),rgba(5,10,24,.52));border:1px solid rgba(160,198,248,.22);border-top:2px solid rgba(160,198,248,.5);border-radius:4px;backdrop-filter:blur(18px);padding:36px 48px;max-width:680px;margin:20px auto 0;box-shadow:0 28px 80px rgba(0,0,0,.5),0 0 60px rgba(80,130,220,.05)}
.gd-head{font-size:9px;font-weight:500;letter-spacing:4px;text-transform:uppercase;color:var(--s2);margin-bottom:14px}
.gd-text{font-family:'DM Serif Display',serif;font-size:clamp(17px,2vw,26px);line-height:1.75;color:rgba(215,228,248,.88)}
.gd-text em{font-style:italic;color:var(--s)}
.gd-text strong{font-weight:400;color:var(--w)}

.cta{display:inline-block;margin-top:36px;border:1px solid rgba(160,198,248,.25);background:rgba(6,12,28,.28);backdrop-filter:blur(10px);padding:12px 32px;border-radius:2px;font-size:10px;font-weight:400;letter-spacing:4px;text-transform:uppercase;color:var(--s2);transition:all .3s}
.cta:hover{border-color:rgba(160,198,248,.52);color:var(--s);box-shadow:0 0 28px rgba(80,130,220,.12)}

#nav{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:18px;z-index:100}
.nb{width:40px;height:40px;border-radius:50%;border:1px solid rgba(160,198,248,.18);background:rgba(3,6,14,.52);backdrop-filter:blur(10px);cursor:none;display:grid;place-items:center;color:rgba(160,198,248,.4);transition:all .3s}
.nb:hover{border-color:rgba(160,198,248,.5);background:rgba(8,16,36,.6);color:#fff;box-shadow:0 0 22px rgba(80,130,220,.18)}
.nb:focus-visible{outline:2px solid var(--s);outline-offset:2px}
.nb svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
#dots{display:flex;gap:7px;align-items:center}
.dot{width:5px;height:5px;padding:0;border:0;border-radius:50%;background:rgba(160,198,248,.2);cursor:none;transition:all .35s}
.dot:focus-visible{outline:2px solid var(--s);outline-offset:3px}
.dot.on{width:22px;border-radius:3px;background:var(--s2);box-shadow:0 0 12px rgba(80,130,220,.3)}
.hint{position:fixed;bottom:36px;right:38px;z-index:100;font-size:9px;font-weight:300;letter-spacing:2.5px;text-transform:uppercase;color:rgba(100,140,200,.28)}

/* series nav — prev/next links between decks + link back to the index */
#series{position:fixed;top:14px;right:18px;z-index:100;display:flex;gap:14px;font-size:9px;font-weight:400;letter-spacing:2px;text-transform:uppercase}
#series a{color:rgba(160,198,248,.4);text-decoration:none;transition:color .3s}
#series a:hover,#series a:focus-visible{color:var(--s)}

@media(max-width:700px){
  body{cursor:auto}
  #cur{display:none}
  .hint{display:none}
  #series{top:10px;right:12px;gap:10px;font-size:8px}
  .slide{padding:38px 20px 90px}
  .lbl{font-size:11px;letter-spacing:3px;margin-bottom:14px}
  .tri{margin-bottom:16px}
  .h2{font-size:26px}
  .sub{font-size:13px;letter-spacing:2px;margin-bottom:26px}
  .bd{font-size:17px;line-height:1.7}
  .freq-list{margin-top:14px;gap:8px}
  .freq-text{font-size:15px}
  .rule-card{padding:20px 18px}
  .rule-label{font-size:10px;letter-spacing:3px}
  .rule-title{font-size:22px}
  .rule-body{font-size:15px;line-height:1.65}
  .fa{grid-template-columns:1fr}
  .fa-half:first-child{border-right:none;border-bottom:1px solid rgba(160,198,248,.1)}
  .fa-label{font-size:10px;letter-spacing:2.5px}
  .fa-text{font-size:15px}
  .good{padding:20px 18px;margin-top:12px}
  .gd-head{font-size:10px;letter-spacing:3px}
  .gd-text{font-size:17px;line-height:1.65}
  .not-list{margin-left:0;margin-top:14px}
  .nw-text{font-size:15px}
  #nav{bottom:max(18px,env(safe-area-inset-bottom,18px))}
  .nb{width:44px;height:44px;cursor:auto;touch-action:manipulation}
  .dot{cursor:auto;touch-action:manipulation}
  .cta{margin-top:22px}
}

/* Respect the OS-level motion preference: this series is about calming
   the nervous system, so it should not force motion on people who've
   asked their system to reduce it. */
@media(prefers-reduced-motion:reduce){
  .orb{animation:none;opacity:.6}
  .pt{display:none}
  .slide,.slide.on,.slide.off{transition:opacity .25s linear;clip-path:none!important}
  #bar{transition:width .25s linear}
  .tri-bar,.dot,.nb,.cta{transition:none}
}