/* Maheshuru Sankalpa — shared styles. One theme: warm paper. Every colour is set explicitly. */

:root {
  --paper:       #F7F0DE;
  --paper-deep:  #EFE6D0;
  --ink:         #15130F;
  --ink-soft:    #4A4337;
  --rule:        rgba(21, 19, 15, 0.22);
  --accent:      #0D6E85;
  --accent-deep: #09586B;
  --error:       #8C2B1C;

  --serif: "Noto Serif", "Noto Serif Sinhala", Georgia, "Times New Roman", serif;

  /* type scale */
  --fs-label: 0.75rem;
  --fs-s:  0.9375rem;
  --fs-0:  clamp(1.0625rem, 1.02rem + 0.2vw, 1.1875rem);
  --fs-1:  clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --fs-2:  clamp(1.625rem, 1.3rem + 1.4vw, 2.375rem);
  --fs-3:  clamp(2.25rem, 1.6rem + 3vw, 4rem);
  --fs-4:  clamp(2.75rem, 1rem + 9.4vw, 7.5rem);

  --gutter: clamp(1rem, 4vw, 2.5rem);
  --max: 70rem;
  --space: clamp(3rem, 2rem + 5vw, 6rem);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--paper);
  color-scheme: only light;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--fs-0);
  line-height: 1.6;
  font-weight: 400;
  overflow-wrap: break-word;
}
html[lang="si"] body { line-height: 1.75; }

h1, h2, h3, p, ul, ol, figure, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }

h1, h2, h3 { text-wrap: balance; font-weight: 700; line-height: 1.15; }
html[lang="si"] h1, html[lang="si"] h2, html[lang="si"] h3 { line-height: 1.35; }

a { color: var(--accent-deep); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--ink); }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

.skip { position: absolute; left: var(--gutter); top: -4rem; background: var(--ink); color: var(--paper); padding: 0.6rem 0.9rem; z-index: 10; }
.skip:focus { top: 0.5rem; }

/* uppercase label; spacing only for Latin — it breaks Sinhala conjuncts */
.label { font-size: var(--fs-label); font-weight: 600; color: var(--accent-deep); line-height: 1.4; }
.caps { text-transform: uppercase; letter-spacing: 0.16em; }

.lede { font-size: var(--fs-1); line-height: 1.45; }
html[lang="si"] .lede { line-height: 1.7; }
.measure { max-width: 65ch; }
.soft { color: var(--ink-soft); }

/* ---------- header / footer ---------- */
.top { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.25rem 1.5rem; padding-block: 1.1rem; }
.mark { color: var(--ink); font-weight: 700; font-size: var(--fs-s); text-decoration: none; letter-spacing: 0.01em; }
.top nav { display: flex; gap: 1.5rem; font-size: var(--fs-s); }
.top nav a { color: var(--ink); text-decoration: none; padding-block: 0.25rem; border-bottom: 1px solid transparent; }
.top nav a:hover { border-bottom-color: var(--ink); }
.top nav a[aria-current="page"] { border-bottom-color: var(--ink); }
.top nav a.lang { color: var(--ink-soft); padding-left: 1.25rem; border-left: 1px solid var(--rule); border-bottom-color: transparent; }
.top nav a.to-book { color: var(--accent-deep); font-weight: 700; }
.top nav a.to-book[aria-current="page"] { border-bottom-color: var(--accent-deep); }

.foot { border-top: 1px solid var(--rule); margin-top: var(--space); padding-block: 1.5rem 2.5rem; font-size: var(--fs-s); color: var(--ink-soft); display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between; }
.foot a { color: var(--ink-soft); }
.foot a:hover { color: var(--ink); }

/* ---------- rules that draw in once (the one motion idea) ---------- */
.rule-top { position: relative; }
.rule-top::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--rule); transform-origin: left; }
.rule-top.strong::before { background: var(--ink); }
.js .rule-top::before { transform: scaleX(0); }
.js .rule-top.in::before { transform: none; transition: transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1); transition-delay: calc(var(--i, 0) * 60ms); }
@media (prefers-reduced-motion: reduce) {
  .js .rule-top::before, .js .rule-top.in::before { transform: none; transition: none; }
}

/* ---------- section scaffold: label column + content column ---------- */
.sec { padding-top: var(--space); }
.sec > .wrap { display: grid; gap: 1.25rem; }
.sec-head { font-size: var(--fs-label); }
@media (min-width: 56rem) {
  .sec > .wrap { grid-template-columns: repeat(12, 1fr); column-gap: 1.5rem; }
  .sec-head { grid-column: 1 / span 3; padding-top: 1.1rem; }
  .sec-body { grid-column: 4 / -1; }
}

/* ---------- Home: opening ---------- */
.open { padding-top: clamp(1.5rem, 4vw, 3.5rem); }
.open .wrap { display: grid; gap: 1.5rem; border-bottom: 1px solid var(--ink); }
.name { font-size: var(--fs-4); font-weight: 900; line-height: 0.98; letter-spacing: -0.025em; }
.open .lede { max-width: 30rem; }
.open .more { margin-top: 1rem; font-size: var(--fs-s); }
.portrait img { width: 100%; mix-blend-mode: multiply; }
.open .portrait { margin-top: 0.5rem; margin-left: auto; width: min(100%, 19rem); }
@media (min-width: 56rem) {
  .open .wrap { grid-template-columns: repeat(12, 1fr); column-gap: 1.5rem; align-items: end; }
  .name { grid-column: 1 / span 8; grid-row: 1; align-self: start; font-size: min(6.5rem, 9.3vw); }
  .open .intro { grid-column: 1 / span 6; grid-row: 2; padding-bottom: 2.5rem; }
  .open .portrait { grid-column: 9 / span 4; grid-row: 1 / span 2; margin-top: 0; width: 100%; }
}

/* ---------- Home: ledger ---------- */
.ledger li { display: grid; grid-template-columns: 1.75rem 1fr auto; column-gap: 1rem; padding-block: 1.15rem 1.3rem; }
.ledger .n { color: var(--ink-soft); font-size: var(--fs-s); font-variant-numeric: tabular-nums; padding-top: 0.2rem; }
.ledger h3 { font-size: var(--fs-1); }
.ledger h3 a { color: var(--ink); }
.ledger h3 a:hover { color: var(--accent-deep); }
.ledger .what p { color: var(--ink-soft); font-size: var(--fs-s); margin-top: 0.25rem; max-width: 40ch; }
.ledger .when { text-align: right; font-size: var(--fs-s); color: var(--ink-soft); font-variant-numeric: tabular-nums; white-space: nowrap; padding-top: 0.3rem; }
.ledger li:last-child { border-bottom: 1px solid var(--rule); }

/* ---------- contact ---------- */
.contact-line { font-size: clamp(1.0625rem, 4.7vw, 2.375rem); font-weight: 700; line-height: 1.2; }
.contact-line a { color: var(--ink); text-decoration-color: var(--accent); text-decoration-thickness: 2px; }
.contact-line a:hover { color: var(--accent-deep); }
.contact-more { margin-top: 1rem; color: var(--ink-soft); font-size: var(--fs-s); }

/* ---------- About ---------- */
.page-head { padding-top: clamp(1.5rem, 4vw, 3.5rem); }
.page-head .wrap { display: grid; gap: 1.5rem; padding-bottom: clamp(2rem, 5vw, 3.5rem); border-bottom: 1px solid var(--ink); }
.page-title { font-size: var(--fs-4); font-weight: 900; line-height: 0.98; letter-spacing: -0.025em; }
.page-head .lede { max-width: 34rem; }
.prose p + p { margin-top: 1.1em; }
.prose a { font-weight: 600; }
.sec-head-h { font-size: var(--fs-1); }
@media (min-width: 56rem) {
  .sec-head-h { grid-column: 1 / span 3; padding-top: 0.95rem; }
}
.about-sec h2 { font-size: var(--fs-1); }

/* ---------- Book (Sinhala) ---------- */
.book-hero { padding-top: clamp(1rem, 3vw, 3rem); }
.book-hero .wrap { display: grid; gap: 1.25rem; padding-bottom: var(--space); }
.eyebrow { font-size: var(--fs-s); font-weight: 600; color: var(--accent-deep); }
.book-title { font-weight: 900; line-height: 1.1; letter-spacing: -0.01em; }
.book-title .t1 { display: block; font-size: clamp(1.9rem, 9.2vw, 3.6rem); line-height: 1.3; }
.book-title .t2 { color: var(--accent); font-size: clamp(3.4rem, 17vw, 8rem); line-height: 1; letter-spacing: -0.03em; }
.book-title .t3 { font-size: clamp(2rem, 9.5vw, 4rem); margin-left: 0.15em; }
html[lang="en"] .book-title .t1 { line-height: 1.1; }
.book-sub { font-size: var(--fs-1); line-height: 1.55; max-width: 28rem; }
.story { max-width: 36rem; }
.story p + p { margin-top: 1em; }
.cover { width: min(100%, 24rem); margin-inline: auto; }
.cover img { width: 100%; }

@media (min-width: 56rem) {
  .book-hero .wrap { grid-template-columns: repeat(12, 1fr); column-gap: 1.5rem; align-items: start; }
  .book-hero .head  { grid-column: 1 / span 7; grid-row: 1; }
  .book-hero .form-box { grid-column: 1 / span 7; grid-row: 2; }
  .book-hero .story { grid-column: 1 / span 6; grid-row: 3; }
  .book-hero .cover { grid-column: 8 / span 5; grid-row: 1 / span 3; width: 100%; align-self: center; }
}

/* waitlist form */
.form-box { border-top: 1px solid var(--ink); padding-top: 1.1rem; max-width: 36rem; }
.form-box h2 { font-size: var(--fs-1); margin-bottom: 0.9rem; }
.field { margin-bottom: 0.9rem; }
.field label { display: block; font-weight: 600; font-size: var(--fs-s); margin-bottom: 0.3rem; }
.field input { width: 100%; min-height: 3rem; padding: 0.55rem 0.8rem; font: inherit; font-size: 1.0625rem; color: var(--ink); background: transparent; border: 1px solid var(--ink); border-radius: 0; }
.field input[aria-invalid="true"] { border-color: var(--error); border-width: 2px; }
.field .err { color: var(--error); font-size: var(--fs-s); margin-top: 0.3rem; font-weight: 600; }
.field .err:empty { display: none; }
.btn { display: inline-block; width: 100%; min-height: 3.25rem; padding: 0.7rem 1.25rem; font: inherit; font-weight: 700; font-size: 1.0625rem; color: var(--paper); background: var(--ink); border: 1px solid var(--ink); border-radius: 0; cursor: pointer; }
.btn:hover { background: var(--accent-deep); border-color: var(--accent-deep); }
.btn[disabled] { opacity: 0.65; cursor: wait; }
.offer { margin-top: 0.8rem; font-size: var(--fs-s); color: var(--ink-soft); line-height: 1.65; }
.offer strong { color: var(--ink); }
.form-msg { color: var(--error); font-weight: 600; font-size: var(--fs-s); margin-top: 0.8rem; }
.form-msg:empty { display: none; }
.thanks:focus { outline: none; }
.thanks h2 { font-size: var(--fs-2); }
.thanks p { margin-top: 0.5rem; }
.hp { display: none; }

/* who it's for */
.who .sec-body > * + * { margin-top: 1.1em; }
.who-list { margin-top: 1rem; }
.who-list li { padding-block: 0.55rem; position: relative; }
.who-list li:last-child { border-bottom: 1px solid var(--rule); }

/* contents (table of contents) */
.contents-band { background: var(--paper-deep); margin-top: var(--space); padding-block: var(--space); }
.contents-band h2 { font-size: var(--fs-3); font-weight: 900; margin-bottom: clamp(1.5rem, 4vw, 3rem); }
.part { padding-block: 1.25rem 2rem; display: grid; gap: 0.5rem 1.5rem; }
.part-h { display: grid; gap: 0.1rem; align-content: start; }
.part-h .part-t { font-size: var(--fs-1); }
.chapters li { display: grid; grid-template-columns: 2.25rem 1fr; column-gap: 0.75rem; padding-block: 0.75rem; align-items: baseline; }
.chapters .num { font-size: var(--fs-s); color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.chapters .ct { font-size: var(--fs-0); font-weight: 600; line-height: 1.4; }
.chapters li:last-child { padding-bottom: 0.25rem; }
.contents-extra { margin-top: 1rem; color: var(--ink-soft); max-width: 40rem; }
@media (min-width: 56rem) {
  .part { grid-template-columns: repeat(12, 1fr); }
  .part-h { grid-column: 1 / span 4; }
  .chapters { grid-column: 5 / -1; }
  .chapters .ct { font-size: var(--fs-1); font-weight: 600; }
  .chapters li { grid-template-columns: 3rem 1fr; padding-block: 0.9rem; }
}

/* author */
.author .sec-body { display: grid; gap: 1.5rem; }
.author .portrait { margin: 0; width: min(100%, 13rem); }
.author h2 { font-size: var(--fs-2); }
.author .bio p + p { margin-top: 1em; }
@media (min-width: 40rem) {
  .author .sec-body { grid-template-columns: 13rem 1fr; column-gap: 2rem; align-items: start; }
  .author .bio { max-width: 36rem; }
}

/* closing */
.closing { background: var(--paper-deep); margin-top: var(--space); padding-block: var(--space); }
.closing .big { font-size: var(--fs-3); font-weight: 900; line-height: 1.2; }
.closing p + p { margin-top: 1rem; }
.closing .back { display: inline-block; margin-top: 1.5rem; font-weight: 700; }
.closing + .foot { margin-top: 0; border-top: 0; }