/* The paper look: the papercraft redesign of the member site, as one layer over styles.css.
   Bright cut-paper shapes on a handmade sketchbook page, pencil notes in the margins, index tabs for the menu.
   Every rule is scoped to html[data-look="paper"], which look.js sets before the page paints; without it this
   file does nothing, so the classic look is untouched. Pieces of markup that only the paper look shows carry
   .paper-only (hidden by styles.css). */
@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@500;700&family=Fraunces:opsz,wght@9..144,600;9..144,700&family=Nunito+Sans:opsz,wght@6..12,400;6..12,600;6..12,700&display=swap');

html[data-look="paper"] {
  color-scheme: light;
  --ground: #EFE6D2; --surface: #FFF9EC; --surface-2: #F6EBD3; --card: #FFFDF6;
  --line: #E0D0AE; --line-strong: #A8916A;
  --ink: #2B2622; --ink-2: #3D3731; --ink-3: #5E5750;
  --accent: #1F6E67; --accent-ink: #FFF9EC; --accent-soft: rgba(31, 110, 103, 0.13);
  --primary: #1F6E67; --primary-ink: #FFF9EC;
  --twine: #A86A0C; --coral: #D9482B; --focus: #1F6E67;
  --pc-red: #D9482B; --pc-red-ink: #A63F1F; --pc-teal: #1F7A72; --pc-purple: #6B4C9A; --pc-orange: #C25F12; --pc-yellow: #F2B630; --pc-tape: rgba(222, 204, 160, 0.82);
  --nav-teal: #FFF9EC; --nav-on-teal: #2B2622; --nav-teal-text: #1F6E67; --nav-soft: rgba(31, 110, 103, 0.12); --nav-track: transparent;
  --sky: none; --dusk: #1F6E67; --night: none;
  --shadow: 0 2px 0 rgba(60, 40, 20, 0.16), 0 14px 22px -14px rgba(60, 40, 20, 0.5);
  --cut: 0 2px 0 rgba(60, 40, 20, 0.18), 0 10px 18px -12px rgba(60, 40, 20, 0.55);
  --radius: 5px;
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Nunito Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-hand: "Caveat", "Segoe Print", "Bradley Hand", cursive;
  /* The desk under the sketchbook: two offset grids of tiny paper fibres. */
  --paper: radial-gradient(rgba(120, 95, 60, 0.07) 1px, transparent 1.2px), radial-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1.4px);
  --torn: polygon(0 3%, 4% 0, 9% 2%, 15% 0, 22% 3%, 30% 1%, 37% 3%, 45% 0, 52% 2%, 60% 0, 68% 3%, 75% 1%, 83% 3%, 90% 0, 96% 2%, 100% 0, 100% 97%, 95% 100%, 88% 98%, 80% 100%, 73% 97%, 65% 100%, 57% 98%, 50% 100%, 42% 97%, 34% 100%, 27% 98%, 19% 100%, 12% 97%, 5% 100%, 0 98%);
}
html[data-look="paper"] body { background-color: var(--ground); background-image: var(--paper); background-size: 7px 7px, 11px 11px; background-position: 0 0, 3px 5px; }
html[data-look="paper"] :is(h1, h2, h3, h4) { font-weight: 700; letter-spacing: -0.005em; }
html[data-look="paper"] a { color: var(--accent); }
html[data-look="paper"] a:hover { color: #154f4a; }
html[data-look="paper"] .eyebrow { font-family: var(--font-hand); font-size: 1.3rem; font-weight: 700; text-transform: none; letter-spacing: 0; color: var(--pc-red-ink); line-height: 1.1; }
html[data-look="paper"] .home-h { font-family: var(--font-hand); font-size: 1.6rem; font-weight: 700; text-transform: none; letter-spacing: 0; color: var(--pc-red-ink); }
html[data-look="paper"] .muted { color: var(--ink-3); }
html[data-look="paper"] :focus-visible { outline: 3px solid var(--pc-yellow); outline-offset: 2px; }
html[data-look="paper"] .paper-only { display: revert; }
html[data-look="paper"] :is(.paper-hero, .paper-method) { display: flex; }
html[data-look="paper"] .classic-only, html[data-look="paper"] .theme-toggle { display: none !important; }

/* ------------------------------------------------------------ masthead */
html[data-look="paper"] .masthead { background: transparent; border-bottom: 0; padding-block: 20px 6px; }
html[data-look="paper"] .masthead::after { display: none; }
html[data-look="paper"] .brand, html[data-look="paper"] .brand:hover { color: var(--ink); }
html[data-look="paper"] .brand .title { font-weight: 700; font-size: 1.55rem; line-height: 1.05; }
html[data-look="paper"] .brand .sub { font-family: var(--font-hand); font-size: 1.2rem; color: var(--ink-3); line-height: 1; }
html[data-look="paper"] .logo-spin { filter: drop-shadow(0 3px 0 rgba(60, 40, 20, 0.18)); }
html[data-look="paper"] .entrance { background: var(--surface); border-color: var(--line-strong); box-shadow: var(--cut); }
html[data-look="paper"] .entrance input { background: #fff; color: var(--ink); }
html[data-look="paper"] :is(input, textarea)::placeholder { color: #7A7067; opacity: 1; }

/* The look switch, for everyone. A small slip of paper in the masthead. */
.look-switch { display: inline-flex; align-items: center; gap: 7px; min-height: 44px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line-strong); background: transparent; color: var(--ink-2); font: inherit; font-size: 0.85rem; cursor: pointer; }
.look-switch:hover { background: var(--surface-2); color: var(--ink); }
.look-switch svg { width: 18px; height: 18px; flex: none; }
html[data-look="paper"] .look-switch { border-radius: 3px; border: 2px solid var(--ink); background: var(--surface); color: var(--ink); font-weight: 700; box-shadow: var(--cut); rotate: -1.5deg; }
html[data-look="paper"] .look-switch:hover { background: #fff; }

/* -------------------------------------------- the menu: sketchbook index tabs */
@media (min-width: 801px) {
  html[data-look="paper"] #nav-main { margin-block: 10px 0; padding: 0 0 0 10px; gap: 4px; border-radius: 0; background: transparent; align-items: flex-end; }
  html[data-look="paper"] #nav-main .tab { border-radius: 7px 7px 0 0; border: 0; padding: 0 18px; color: var(--ink); font-weight: 700; background: rgba(255, 249, 236, 0.45); box-shadow: inset 0 -1px 0 rgba(60, 40, 20, 0.1); }
  html[data-look="paper"] #nav-main .tab:hover { background: rgba(255, 249, 236, 0.85); }
  html[data-look="paper"] #nav-main .tab[aria-current] { background: var(--surface); color: var(--ink); box-shadow: inset 0 3px 0 var(--pc-red); min-height: 50px; }
  html[data-look="paper"] #nav-main[data-has-sub="true"] .tab[aria-current]::after { display: none; }
  /* The open page: the section's own menu and the view sit on one sheet of paper under the tabs. */
  html[data-look="paper"] #nav-sub { width: auto; min-width: 0; max-width: none; margin: 0; border: 0; border-radius: 0 8px 0 0; background: var(--surface); padding: 14px 18px 6px; }
  html[data-look="paper"] #nav-sub[hidden] + main { border-top-left-radius: 0; }
  html[data-look="paper"] #nav-sub:not([hidden]) + main { border-radius: 0 0 8px 8px; padding-top: 10px; }
  html[data-look="paper"] .shell > main { position: relative; background: var(--surface); border-radius: 0 8px 8px 8px; padding: clamp(20px, 3.4vw, 44px) clamp(18px, 3.4vw, 48px) 40px; box-shadow: var(--shadow); margin-bottom: 40px; }
  html[data-look="paper"] .shell:has(#nav-sub:not([hidden])) > #nav-sub { box-shadow: 0 -10px 22px -18px rgba(60, 40, 20, 0.45); }
}
html[data-look="paper"] #nav-sub .subtab { border-radius: 4px; border: 1px solid var(--line-strong); background: var(--card); color: var(--ink-2); font-weight: 600; }
html[data-look="paper"] #nav-sub .subtab:hover { background: #fff; }
html[data-look="paper"] #nav-sub .subtab[aria-current="page"] { background: var(--pc-yellow); border-color: var(--ink); color: var(--ink); box-shadow: 0 2px 0 rgba(60, 40, 20, 0.2); }
html[data-look="paper"] #nav-sub .subtab .nav-icon { color: var(--ink); }
@media (max-width: 800px) {
  html[data-look="paper"] #nav-main { background: var(--surface); border-top: 2px solid var(--ink); box-shadow: 0 -8px 18px -12px rgba(60, 40, 20, 0.45); }
  html[data-look="paper"] #nav-main .tab { color: var(--ink-2); font-weight: 700; }
  html[data-look="paper"] #nav-main .tab[aria-current] { color: var(--pc-red-ink); }
  html[data-look="paper"] #nav-main .tab[aria-current] .nav-icon { background: rgba(217, 72, 43, 0.12); }
  html[data-look="paper"] #nav-sub::before { font-family: var(--font-hand); font-size: 1.15rem; text-transform: none; letter-spacing: 0; color: var(--pc-red-ink); }
  html[data-look="paper"] .shell > main { background: var(--surface); margin-inline: -6px; padding: 22px 16px 30px; border-radius: 6px; box-shadow: var(--shadow); margin-top: 8px; }
  html[data-look="paper"] .masthead { padding-block: 14px 4px; }
  html[data-look="paper"] .brand, html[data-look="paper"] .brand:hover { color: var(--ink); }
html[data-look="paper"] .brand .title { font-size: 1.3rem; }
  html[data-look="paper"] .look-switch .look-switch-t { font-size: 0.8rem; }
}

/* ------------------------------------------------------------ paper pieces */
html[data-look="paper"] .panel { background: var(--card); border: 1px solid var(--line); border-radius: 4px; box-shadow: var(--cut); }
html[data-look="paper"] .panel .panel { box-shadow: 0 1px 0 rgba(60, 40, 20, 0.12), 0 6px 12px -8px rgba(60, 40, 20, 0.4); background: #fff; }
html[data-look="paper"] .panel.lift { border-color: var(--line); box-shadow: var(--shadow); }
html[data-look="paper"] .panel.tinted { border-top-width: 8px; }
html[data-look="paper"] .btn { border-radius: 4px; border: 2px solid var(--ink); background: var(--surface); color: var(--ink); font-weight: 700; }
html[data-look="paper"] .btn:hover { background: #fff; }
html[data-look="paper"] .btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); box-shadow: var(--cut); }
html[data-look="paper"] .btn.primary:hover { background: #185a54; filter: none; }
html[data-look="paper"] .btn.quiet { border-color: transparent; background: transparent; color: var(--accent); }
html[data-look="paper"] .btn.quiet:hover { background: var(--accent-soft); }
html[data-look="paper"] .chip { border-radius: 3px; }
html[data-look="paper"] :is(input[type="text"], input[type="date"], input[type="email"], input[type="password"], input[type="search"], input[type="number"], textarea, select) { background: #fff; border-color: var(--line-strong); border-radius: 4px; color: var(--ink); }
html[data-look="paper"] .wobble-tab { background: var(--pc-yellow); color: var(--ink); border: 0; border-radius: 0 6px 6px 0; font-family: var(--font-hand); font-weight: 700; font-size: 1.25rem; letter-spacing: 0; opacity: 1; box-shadow: var(--cut); }
html[data-look="paper"] .wobble-panel { background: var(--surface); border: 2px solid var(--ink); border-radius: 4px; box-shadow: var(--shadow); }
html[data-look="paper"] .toast { border-radius: 4px; }

/* ------------------------------------------------------------ home */
.paper-hero { flex-wrap: wrap; gap: 36px 56px; align-items: center; margin: 4px 0 60px; }
.paper-hero .ph-copy { flex: 1 1 420px; min-width: 0; }
.paper-hero .ph-kicker { margin: 0 0 6px; font-family: var(--font-hand); font-weight: 700; font-size: 1.65rem; color: var(--pc-red-ink); transform: rotate(-2deg); transform-origin: left; }
.paper-hero h1 { margin: 0 0 18px; font-size: clamp(2.3rem, 1.3rem + 3.6vw, 4rem); line-height: 1.02; letter-spacing: -0.01em; }
.paper-hero .ph-lede { margin: 0 0 24px; font-size: 1.18rem; line-height: 1.55; max-width: 34rem; color: var(--ink-2); }
.paper-hero .ph-go { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.paper-hero .ph-go .btn { min-height: 48px; padding: 10px 20px; font-size: 1.02rem; }
.paper-hero .ph-note { position: relative; height: 66px; margin-top: 4px; }
.paper-hero .ph-note svg { position: absolute; left: 70px; top: 0; width: 90px; height: 60px; }
.paper-hero .ph-note span { position: absolute; left: 160px; top: 34px; font-family: var(--font-hand); font-size: 1.4rem; color: var(--ink-3); white-space: nowrap; }
.paper-hero .ph-pic { flex: 1 1 340px; min-width: 0; max-width: 440px; margin-inline: auto; position: relative; }
.paper-hero .ph-polaroid { position: relative; margin: 0; background: #fff; padding: 12px 12px 42px; transform: rotate(2.2deg); box-shadow: var(--shadow); }
.paper-hero .ph-polaroid img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 40%; }
.paper-hero .ph-polaroid figcaption { position: absolute; left: 0; right: 0; bottom: 6px; text-align: center; font-family: var(--font-hand); font-size: 1.4rem; color: var(--ink-2); }
.pc-tape { position: absolute; width: 96px; height: 26px; background: var(--pc-tape); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1); top: -12px; left: 38%; transform: rotate(-4deg); }
.paper-hero .ph-slip { position: absolute; left: -24px; bottom: -22px; max-width: 230px; background: var(--pc-yellow); padding: 16px 20px 14px; transform: rotate(-4deg); clip-path: var(--torn); filter: drop-shadow(0 6px 6px rgba(60, 40, 20, 0.28)); }
.paper-hero .ph-slip b { display: block; font-family: var(--font-hand); font-size: 1.55rem; line-height: 1; color: var(--ink); }
.paper-hero .ph-slip span { display: block; margin-top: 4px; font-size: 0.9rem; line-height: 1.35; color: var(--ink); }
@media (max-width: 600px) {
  .paper-hero { gap: 26px; margin-bottom: 44px; }
  .paper-hero .ph-pic { max-width: 300px; margin-bottom: 18px; }
  .paper-hero .ph-go .btn { width: 100%; justify-content: center; }
  .paper-hero .ph-note { height: auto; margin-top: 8px; text-align: center; }
  .paper-hero .ph-note svg { display: none; }
  .paper-hero .ph-note span { position: static; white-space: normal; }
}

html[data-look="paper"] .start-head h1 { font-size: clamp(1.8rem, 1.3rem + 1.6vw, 2.5rem); }
html[data-look="paper"] .start-head .muted { font-family: var(--font-hand); font-size: 1.5rem; line-height: 1.1; }
html[data-look="paper"] .start-grid { gap: 30px 24px; margin-top: 30px; }
@media (min-width: 801px) and (max-width: 1100px) { html[data-look="paper"] .start-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
html[data-look="paper"] .start-card { background: var(--card); border: 0; border-top: 8px solid var(--tone); border-radius: 2px; padding: 14px 14px 18px; box-shadow: var(--cut); gap: 8px; transition: transform .25s ease, box-shadow .25s ease; }
html[data-look="paper"] .start-card:nth-child(4n+1) { transform: rotate(-0.8deg); }
html[data-look="paper"] .start-card:nth-child(4n+2) { transform: rotate(0.9deg); }
html[data-look="paper"] .start-card:nth-child(4n+3) { transform: rotate(-0.5deg); }
html[data-look="paper"] .start-card:nth-child(4n+4) { transform: rotate(0.6deg); }
html[data-look="paper"] .start-card:hover { transform: rotate(0deg) translateY(-3px); box-shadow: var(--shadow); }
html[data-look="paper"] .start-wheel { --tone: var(--pc-red); }
html[data-look="paper"] .start-drills { --tone: var(--pc-teal); }
html[data-look="paper"] .start-book { --tone: var(--pc-purple); }
html[data-look="paper"] .start-charts { --tone: var(--pc-orange); }
html[data-look="paper"] .start-n { position: absolute; top: -22px; right: 14px; width: 40px; height: 40px; border-radius: 50%; background: var(--tone); color: #FFF9EC; display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 1.25rem; letter-spacing: 0; box-shadow: 0 3px 0 rgba(0, 0, 0, 0.15); z-index: 2; }
.start-img { display: none; }
html[data-look="paper"] .start-img { display: block; width: 100%; height: 180px; object-fit: cover; object-position: 50% 55%; border-radius: 2px; }
html[data-look="paper"] .start-card .t { font-size: 1.4rem; font-weight: 700; margin-top: 2px; }
html[data-look="paper"] .start-card p { color: var(--ink-2); font-size: 0.98rem; }
html[data-look="paper"] .join-band { border: 0; border-radius: 0; background: var(--pc-yellow); color: var(--ink); clip-path: var(--torn); padding: 22px 26px; margin-top: 34px; }
html[data-look="paper"] .join-band .btn { background: var(--ink); border-color: var(--ink); color: var(--pc-yellow); }
html[data-look="paper"] .map-card { background: #fff; border: 1px solid var(--line); border-radius: 3px; box-shadow: 0 1px 0 rgba(60, 40, 20, 0.12), 0 6px 12px -8px rgba(60, 40, 20, 0.4); }
html[data-look="paper"] .map-card:hover { border-color: var(--accent); }
html[data-look="paper"] :is(.charts-card, .story-card) { background: #fff; color: var(--ink); }
html[data-look="paper"] .story-card :is(.eyebrow) { color: var(--pc-red-ink); }
html[data-look="paper"] .story-card .muted { color: var(--ink-3); }
/* The book band: the cover pinned to a sheet of paper. */
html[data-look="paper"] .book-band { background: var(--card); color: var(--ink); border: 1px solid var(--line); border-radius: 4px; box-shadow: var(--cut); }
html[data-look="paper"] .book-band::before { display: none; }
html[data-look="paper"] .book-band img { border-radius: 2px; border: 6px solid #fff; box-shadow: var(--cut); transform: rotate(-2.5deg); }
html[data-look="paper"] .book-band :is(.bq) { color: var(--ink-2); }
html[data-look="paper"] .book-band .bs { color: var(--pc-red-ink); }
html[data-look="paper"] .book-band .eyebrow { color: var(--pc-red-ink); }

/* The method of the book, on a torn strip of teal paper at the foot of the home page. */
.paper-method { margin: 40px -12px 10px; background: #1F6E67; color: #FFF9EC; clip-path: var(--torn); padding: 44px clamp(20px, 5vw, 56px); flex-wrap: wrap; gap: 10px 40px; align-items: center; justify-content: space-between; }
.paper-method p { margin: 0; }
.paper-method .pm-line { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.6rem, 1.1rem + 1.6vw, 2.3rem); line-height: 1.15; }
.paper-method .pm-note { font-family: var(--font-hand); font-size: 1.5rem; color: #F7E7B8; }

/* ------------------------------------------------------------ Drill Library */
html[data-look="paper"] body.drills .site-head .masthead { margin-inline: -16px; }
@media (min-width: 801px) { html[data-look="paper"] body.drills .site-head #nav-sub { margin-inline: -16px; padding-inline: 34px; } }
html[data-look="paper"] .dl-shell { background: var(--surface); box-shadow: var(--shadow); border-radius: 0 8px 8px 8px; max-width: 1240px; margin: 0 auto 40px; padding: 26px clamp(16px, 3vw, 40px) 36px; }
@media (min-width: 801px) { html[data-look="paper"] body.drills .shell.site-head { padding-bottom: 0; } }
html[data-look="paper"] .dl-find { background: var(--card); border: 1px solid var(--line); border-radius: 4px; box-shadow: var(--cut); backdrop-filter: none; }
html[data-look="paper"] .dl-state { border-radius: 4px; background: #fff; }
html[data-look="paper"] .dl-state[aria-pressed="true"] { background: var(--pc-yellow); border-color: var(--ink); color: var(--ink); }
html[data-look="paper"] .dl-state[aria-pressed="true"] span { color: var(--ink-2); }
html[data-look="paper"] .rl-hero { background: var(--surface); color: var(--ink); }
html[data-look="paper"] .rl-hero::before { display: none; }
html[data-look="paper"] .rl-foot, html[data-look="paper"] footer { color: var(--ink-3); }

/* Tall cards on a phone: a smaller tilt, or the top and bottom edges drift apart. */
@media (max-width: 560px) {
  html[data-look="paper"] .start-card:nth-child(odd) { transform: rotate(-0.35deg); }
  html[data-look="paper"] .start-card:nth-child(even) { transform: rotate(0.35deg); }
  html[data-look="paper"] .start-grid { gap: 34px; }
}
/* The science, in paper: pinned-up photos of the scroll stories on the home page. */
.paper-stories { flex-wrap: wrap; gap: 30px 48px; align-items: center; margin: 70px 0 56px; }
.paper-stories .ps-copy { flex: 1 1 280px; min-width: 0; }
.paper-stories .ps-kicker { margin: 0 0 2px; font-family: var(--font-hand); font-weight: 700; font-size: 1.5rem; color: var(--pc-red-ink); }
.paper-stories h2 { margin: 0 0 10px; font-size: clamp(1.8rem, 1.3rem + 1.6vw, 2.5rem); }
.paper-stories p { margin: 0 0 20px; font-size: 1.1rem; line-height: 1.55; color: var(--ink-2); max-width: 30rem; }
.paper-stories .ps-shelf { flex: 2 1 440px; min-width: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.paper-stories .ps-shelf a { color: var(--ink); text-decoration: none; }
.paper-stories figure { margin: 0; background: #fff; padding: 8px 8px 12px; box-shadow: var(--cut); transform: rotate(-2deg); transition: transform .25s ease; }
.paper-stories .ps-shelf a:nth-child(2) figure { transform: rotate(1.4deg) translateY(14px); }
.paper-stories .ps-shelf a:nth-child(3) figure { transform: rotate(-0.8deg); }
.paper-stories .ps-shelf a:hover figure { transform: rotate(0) translateY(-4px); }
.paper-stories img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; }
.paper-stories figcaption { margin: 8px 2px 0; font-family: var(--font-hand); font-size: 1.3rem; line-height: 1.05; }
html[data-look="paper"] .paper-stories { display: flex; }
@media (max-width: 600px) { .paper-stories .ps-shelf { gap: 10px; } .paper-stories figure { padding: 5px 5px 8px; } .paper-stories figcaption { font-size: 1.05rem; } }
@media (prefers-reduced-motion: reduce) { .paper-stories figure { transition: none; } }
@media (prefers-reduced-motion: reduce) { html[data-look="paper"] .start-card { transition: none; } }