/* Manifesto v17 — independent introduction atlas + ceramic tenet tiles. */

@media(min-width:901px){
  .manifesto-reader{
    display:block;
  }
  .manifesto-scroll{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    z-index:1;
  }
  .manifesto-index{
    position:absolute;
    z-index:8;
    left:0;
    top:var(--manifesto-front-index-top,0px);
    bottom:0;
    width:var(--manifesto-index-w);
    min-height:0;
  }
  .manifesto-document,
  .manifesto-measure-guide{
    width:auto!important;
    max-width:none!important;
    margin-left:calc(var(--manifesto-index-w) + var(--manifesto-margin-left))!important;
    margin-right:var(--manifesto-margin-right)!important;
  }
  .manifesto-document{
    padding-top:0!important;
  }
  .manifesto-reader.manifesto-front-active .manifesto-measure-guide{
    opacity:0!important;
  }
}

/* The manifesto title stays purely typographic. */
.manifesto-title-block .manifesto-cover{
  display:none!important;
}
.manifesto-title-block h1{
  margin-top:0!important;
}

/* --------------------------------------------------------------------------
   Introduction atlas — intentionally independent from reader controls.
   It is a direct child of .manifesto-scroll, not of .manifesto-document, so
   long-form font size, leading and left/right margin controls never alter it.
   -------------------------------------------------------------------------- */
.manifesto-front-panel{
  position:relative;
  z-index:2;
  width:100%;
  box-sizing:border-box;
  margin:0;
  border-bottom:1px solid var(--reader-line-strong);
  background:var(--reader-paper);
  font-family:"IBM Plex Sans JP","Noto Sans SC","PingFang SC",sans-serif;
}

.manifesto-front-intro-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:56px;
  padding:46px 52px 36px;
}
.manifesto-front-intro-grid p{
  margin:0;
  color:var(--reader-text);
  font-size:15px;
  font-weight:300;
  line-height:1.95;
  letter-spacing:.006em;
  text-align:left;
  text-wrap:pretty;
}
.manifesto-front-name{
  display:inline;
  margin-right:.55em;
  color:var(--reader-text);
  font-size:21px;
  font-weight:500;
  line-height:1;
  letter-spacing:.045em;
  white-space:nowrap;
}

.tenet-directory-grid{
  display:grid;
  grid-template-columns:repeat(10,minmax(0,1fr));
  gap:clamp(18px,1.25vw,26px);
  align-items:end;
  padding:20px 18px 20px;
}
.tenet-directory-card{
  display:block;
  min-width:0;
  color:inherit;
  text-decoration:none;
  outline:none;
  text-align:center;
}

/* --------------------------------------------------------------------------
   Ceramic frame vocabulary.
   Four flat trapezoids form the rim: white top, pale left, darker right,
   weighted bottom. No soft drop-shadow, so it reads like a tile rather than
   moulded plastic.
   -------------------------------------------------------------------------- */
.ceramic-tile{
  --ceramic-bevel:8px;
  --ceramic-face:color-mix(in srgb,var(--reader-paper) 92%,#d7cfbb);
  --ceramic-top:color-mix(in srgb,var(--reader-paper) 70%,#ffffff);
  --ceramic-left:color-mix(in srgb,var(--reader-paper) 86%,#d9d1bd);
  --ceramic-right:color-mix(in srgb,var(--reader-paper) 64%,var(--reader-line-strong));
  --ceramic-bottom:color-mix(in srgb,var(--reader-paper) 48%,var(--reader-line-strong));
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--ceramic-face);
}
.ceramic-tile::before{
  content:"";
  position:absolute;
  z-index:0;
  inset:var(--ceramic-bevel);
  background:var(--ceramic-face);
}
.ceramic-bevel{
  position:absolute;
  z-index:3;
  display:block;
  pointer-events:none;
}
.ceramic-bevel-top{
  left:0;
  top:0;
  width:100%;
  height:var(--ceramic-bevel);
  background:var(--ceramic-top);
  clip-path:polygon(0 0,100% 0,calc(100% - var(--ceramic-bevel)) 100%,var(--ceramic-bevel) 100%);
}
.ceramic-bevel-right{
  right:0;
  top:0;
  width:var(--ceramic-bevel);
  height:100%;
  background:var(--ceramic-right);
  clip-path:polygon(0 var(--ceramic-bevel),100% 0,100% 100%,0 calc(100% - var(--ceramic-bevel)));
}
.ceramic-bevel-bottom{
  left:0;
  bottom:0;
  width:100%;
  height:var(--ceramic-bevel);
  background:var(--ceramic-bottom);
  clip-path:polygon(var(--ceramic-bevel) 0,calc(100% - var(--ceramic-bevel)) 0,100% 100%,0 100%);
}
.ceramic-bevel-left{
  left:0;
  top:0;
  width:var(--ceramic-bevel);
  height:100%;
  background:var(--ceramic-left);
  clip-path:polygon(0 0,100% var(--ceramic-bevel),100% calc(100% - var(--ceramic-bevel)),0 100%);
}

.tenet-directory-tile{
  width:100%;
  aspect-ratio:1 / 1;
  transform:translateY(0);
  transition:transform .16s ease,filter .16s ease;
}
.tenet-directory-icon{
  position:absolute;
  z-index:1;
  inset:calc(var(--ceramic-bevel) + 5px);
  display:block;
  background-image:var(--tenet-image);
  background-repeat:no-repeat;
  background-size:contain;
  background-position:center;
}
.tenet-directory-label{
  display:block;
  margin-top:10px;
  color:var(--reader-text);
  font-size:12px;
  font-weight:300;
  line-height:1.35;
  letter-spacing:.025em;
  white-space:nowrap;
}
.tenet-directory-card:hover .tenet-directory-tile,
.tenet-directory-card:focus-visible .tenet-directory-tile{
  transform:translateY(-2px);
  filter:brightness(1.015);
}
.tenet-directory-card:active .tenet-directory-tile{
  transform:translateY(1px);
  filter:brightness(.985);
}
.tenet-directory-card:hover .tenet-directory-label,
.tenet-directory-card:focus-visible .tenet-directory-label{
  font-weight:400;
}
.tenet-directory-card:focus-visible{
  outline:1px solid var(--reader-line-strong);
  outline-offset:6px;
}

/* Repeat each individual chapter drawing beside its full tenet heading. */
.manifesto-subsection.tenet .manifesto-subsection-header.has-tenet-icon{
  grid-template-columns:64px 82px minmax(0,1fr);
  gap:18px;
  align-items:center;
}
.tenet-heading-icon{
  display:block;
  width:76px;
  aspect-ratio:420 / 454;
  background-image:var(--tenet-image);
  background-repeat:no-repeat;
  background-size:contain;
  background-position:center;
  opacity:.92;
}
.manifesto-subsection.tenet .manifesto-subsection-header.has-tenet-icon h3{
  align-self:center;
}

/* Return button appears only when a tenet was entered from the intro atlas. */
.tenet-return-row{
  display:flex;
  justify-content:flex-end;
  margin:48px 0 16px;
}
.tenet-return-button{
  appearance:none;
  border:0;
  padding:0;
  margin:0;
  background:transparent;
  color:var(--reader-text);
  cursor:pointer;
}
.tenet-return-tile{
  --ceramic-bevel:7px;
  width:158px;
  height:52px;
  transition:transform .16s ease,filter .16s ease;
}
.tenet-return-face{
  position:absolute;
  z-index:2;
  inset:var(--ceramic-bevel);
  display:grid;
  place-items:center;
  padding:0 16px;
  background:var(--ceramic-face);
  color:var(--reader-text);
  font-size:11px;
  font-weight:300;
  letter-spacing:.055em;
  white-space:nowrap;
}
.tenet-return-button:hover .tenet-return-tile,
.tenet-return-button:focus-visible .tenet-return-tile{
  transform:translateY(-2px);
  filter:brightness(1.015);
}
.tenet-return-button:active .tenet-return-tile{
  transform:translateY(1px);
}
.tenet-return-button:focus-visible{
  outline:1px solid var(--reader-line-strong);
  outline-offset:6px;
}

/* Margin ruler belongs to the long-form reader only. */
.manifesto-margin-ruler{
  transition:opacity .18s ease,transform .18s ease;
}
.manifesto-reader.manifesto-front-active .manifesto-margin-ruler{
  opacity:0;
  transform:translateY(18px);
  pointer-events:none;
}
.manifesto-reader.manifesto-longform-active .manifesto-margin-ruler{
  opacity:1;
  transform:none;
}

html[lang^="zh"] .tenet-directory-label{
  font-family:"IBM Plex Sans JP","Noto Sans SC","PingFang SC",sans-serif;
}

@media(max-width:1500px) and (min-width:1101px){
  .manifesto-front-intro-grid{
    gap:38px;
    padding:40px 38px 32px;
  }
  .manifesto-front-intro-grid p{
    font-size:14px;
    line-height:1.92;
  }
  .manifesto-front-name{
    font-size:20px;
  }
  .tenet-directory-grid{
    gap:16px;
    padding:18px 16px 20px;
  }
  .tenet-directory-label{
    font-size:11px;
  }
}

@media(max-width:1100px) and (min-width:901px){
  .manifesto-front-intro-grid{
    grid-template-columns:1fr;
    gap:18px;
    padding:34px 34px 30px;
  }
  .manifesto-front-intro-grid p{
    font-size:14.5px;
    line-height:1.9;
  }
  .tenet-directory-grid{
    grid-template-columns:repeat(5,minmax(0,1fr));
    gap:24px 18px;
    padding:18px 26px 24px;
  }
}

@media(max-width:900px){
  .manifesto-front-panel{
    border-bottom:1px solid var(--reader-line-strong);
  }
  .manifesto-front-intro-grid{
    grid-template-columns:1fr;
    gap:20px;
    padding:28px 20px 26px;
  }
  .manifesto-front-intro-grid p{
    font-size:15px;
    line-height:1.86;
  }
  .manifesto-front-name{
    font-size:19px;
  }
  .tenet-directory-grid{
    display:grid;
    grid-auto-flow:column;
    grid-template-columns:none;
    grid-template-rows:1fr;
    grid-auto-columns:minmax(132px,36vw);
    gap:18px;
    overflow-x:auto;
    overflow-y:hidden;
    min-width:0;
    max-width:100%;
    padding:10px 20px 22px;
    /* Native horizontal swipe must not snap the catalogue back to its
       first tiles when Safari hands off touch momentum. */
    scroll-snap-type:none;
    -webkit-overflow-scrolling:touch;
    overscroll-behavior-x:contain;
    touch-action:pan-x pan-y;
    scrollbar-width:thin;
  }
  .tenet-directory-card{
    scroll-snap-align:start;
  }
  .tenet-directory-label{
    font-size:10px;
  }
  .manifesto-subsection.tenet .manifesto-subsection-header.has-tenet-icon{
    grid-template-columns:44px 62px minmax(0,1fr);
    gap:12px;
  }
  .tenet-heading-icon{
    width:58px;
  }
  .tenet-return-row{
    margin-top:38px;
  }
}

@media(max-width:560px){
  .manifesto-front-intro-grid{
    padding:24px 18px 22px;
  }
  .tenet-directory-grid{
    grid-auto-columns:minmax(122px,42vw);
    gap:14px;
    padding-left:18px;
    padding-right:18px;
  }
  .manifesto-subsection.tenet .manifesto-subsection-header.has-tenet-icon{
    grid-template-columns:38px 54px minmax(0,1fr);
    gap:10px;
  }
  .tenet-heading-icon{
    width:50px;
  }
  .tenet-return-tile{
    width:142px;
    height:48px;
  }
}

@media(prefers-reduced-motion:reduce){
  .tenet-directory-tile,
  .tenet-return-tile,
  .manifesto-margin-ruler{
    transition:none;
  }
}