/* Layout: one left-aligned 72rem column. A deep lagoon hero and footer bookend a light limestone body; the Tamil word அறம் is the single bold element. */
:root {
  --paper: #F2F5F3;      /* limestone */
  --paper-2: #E3EAE6;    /* shaded band */
  --ink: #13282D;        /* lagoon ink */
  --ink-soft: #4A5F64;
  --line: #C9D4CF;
  --lagoon: #1C5A66;     /* brand: Jaffna lagoon */
  --lagoon-ink: #FFFFFF; /* text on lagoon */
  --deep: #0F3A43;       /* hero and footer ground */
  --deep-ink: #E8F0EE;
  --deep-soft: #A9C3C4;
  --deep-line: #2A5560;
  --manjal: #E5AE2F;     /* turmeric, used for the mark and the Tamil word only */
  --focus: #D9A21B;
  --field: #FFFFFF;

  --font-display: "Anek Tamil", "Noto Sans Tamil", "Segoe UI", system-ui, sans-serif;
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;

  --step--1: 0.9375rem;
  --step-0: 1.125rem;
  --step-1: 1.375rem;
  --step-2: clamp(1.625rem, 1.25rem + 1.5vw, 2.25rem);
  --step-3: clamp(2.25rem, 1.5rem + 3.2vw, 3.75rem);
  --step-tamil: clamp(5.5rem, 3rem + 13vw, 13rem);

  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --section: clamp(3.5rem, 2rem + 6vw, 6.5rem);
  --radius: 3px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0D1719; --paper-2: #132327; --ink: #E2EAE7; --ink-soft: #9DB1B2; --line: #26393E;
    --lagoon: #7DBFC9; --lagoon-ink: #0B1A1D; --deep: #0A272D; --deep-ink: #E2EAE7; --deep-soft: #9DB8B9;
    --deep-line: #24464E; --manjal: #E9B53A; --focus: #E9B53A; --field: #101E21;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0D1719; --paper-2: #132327; --ink: #E2EAE7; --ink-soft: #9DB1B2; --line: #26393E;
  --lagoon: #7DBFC9; --lagoon-ink: #0B1A1D; --deep: #0A272D; --deep-ink: #E2EAE7; --deep-soft: #9DB8B9;
  --deep-line: #24464E; --manjal: #E9B53A; --focus: #E9B53A; --field: #101E21;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5.5rem; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  font-optical-sizing: auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1 0 auto; }
img, svg { max-width: 100%; }
a { color: var(--lagoon); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0;
  text-wrap: balance;
  font-stretch: 90%;
}
h1 { font-size: var(--step-3); letter-spacing: -0.01em; }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); line-height: 1.25; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
.prose { display: grid; gap: 1.1em; max-width: 38rem; }
.prose ul { padding-left: 1.2em; display: grid; gap: 0.35em; }
.lead { font-size: clamp(1.1875rem, 1.05rem + 0.5vw, 1.375rem); line-height: 1.55; max-width: 40rem; }
.muted { color: var(--ink-soft); }
.small { font-size: var(--step--1); }
.tamil { font-family: var(--font-display); font-stretch: 100%; }
.skip {
  position: absolute; left: 1rem; top: -4rem; z-index: 50;
  background: var(--lagoon); color: var(--lagoon-ink); padding: 0.6rem 1rem; border-radius: var(--radius);
  font-family: var(--font-display);
}
.skip:focus { top: 1rem; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section); }
.section + .section { padding-top: 0; }
.band { background: var(--paper-2); }
.section.section-facts { padding-bottom: clamp(2.5rem, 2rem + 2vw, 3.5rem); }
.section + .band, .band + .section { padding-top: var(--section); }

/* Header */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.5rem; }
.brand { display: flex; align-items: center; gap: 0.75rem; color: var(--ink); text-decoration: none; }
.brand-mark { width: 2.5rem; height: 2.5rem; flex: none; display: block; }
.brand-mark .mark-ground { fill: var(--deep); }
.brand-mark .mark-letter { fill: var(--manjal); }
.brand-words { display: grid; line-height: 1.05; font-family: var(--font-display); }
.brand-name { font-weight: 700; font-size: 1.375rem; font-stretch: 90%; letter-spacing: 0.01em; }
.brand-sub { font-weight: 500; font-size: 0.8125rem; color: var(--ink-soft); letter-spacing: 0.02em; }
.nav { display: flex; align-items: center; gap: clamp(1rem, 2.2vw, 2rem); font-family: var(--font-display); font-size: 1.0625rem; }
.nav ul { list-style: none; display: flex; gap: clamp(1rem, 2.2vw, 1.75rem); }
.nav ul a { color: var(--ink); text-decoration: none; padding-block: 0.4rem; border-bottom: 2px solid transparent; }
.nav ul a:hover { border-bottom-color: var(--line); }
.nav ul a[aria-current="page"] { border-bottom-color: var(--lagoon); color: var(--lagoon); }
.menu-toggle {
  display: none; font: 600 1rem/1 var(--font-display); color: var(--ink);
  background: none; border: 1px solid var(--line); border-radius: var(--radius); padding: 0.65rem 0.9rem; cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font: 600 1.0625rem/1.1 var(--font-display); font-stretch: 95%;
  padding: 0.85rem 1.3rem; border-radius: var(--radius); text-decoration: none;
  background: var(--lagoon); color: var(--lagoon-ink); border: 1px solid var(--lagoon); cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn-quiet { background: transparent; color: var(--lagoon); border-color: var(--line); }
.btn-small { padding: 0.6rem 1rem; font-size: 1rem; }
.on-deep .btn { background: var(--manjal); border-color: var(--manjal); color: #10262B; }
.on-deep .btn-quiet { background: transparent; color: var(--deep-ink); border-color: var(--deep-line); }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Hero */
.on-deep { background: var(--deep); color: var(--deep-ink); }
.on-deep a:not(.btn) { color: var(--deep-ink); }
.hero { padding-block: clamp(3.5rem, 2rem + 6vw, 6.5rem) clamp(3rem, 2rem + 4vw, 5rem); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: end; }
.hero-copy { display: grid; gap: 1.6rem; min-width: 0; }
.hero h1 { font-size: clamp(2.5rem, 1.6rem + 3.8vw, 4.25rem); font-stretch: 85%; line-height: 1.04; }
.hero .lead { color: var(--deep-soft); }
.aram { display: grid; gap: 1rem; min-width: 0; margin: 0; container-type: inline-size; }
.aram-word {
  font-family: var(--font-display); font-weight: 700; font-stretch: 100%;
  font-size: clamp(4.5rem, 12vw, 11rem); line-height: 1; color: var(--manjal);
  margin: 0; white-space: nowrap;
}
@supports (font-size: 1cqw) {
  .aram-word { font-size: min(33cqw, 12rem); }
}
.aram-note { font-size: var(--step--1); color: var(--deep-soft); max-width: 24rem; border-top: 1px solid var(--deep-line); padding-top: 0.9rem; }
.aram-note b { color: var(--deep-ink); font-weight: 600; }

/* Facts */
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 0; }
.fact { padding: 0.25rem 1.25rem 0.25rem 1.25rem; border-left: 1px solid var(--line); display: grid; gap: 0.35rem; align-content: start; }
.fact:first-child { padding-left: 0; border-left: 0; }
.fact dt { font-family: var(--font-display); font-weight: 600; font-size: clamp(2rem, 1.5rem + 2vw, 2.75rem); line-height: 1; color: var(--lagoon); font-variant-numeric: tabular-nums; font-stretch: 90%; }
.fact dd { margin: 0; font-size: var(--step--1); color: var(--ink-soft); line-height: 1.45; }

/* Organisations */
.orgs { display: grid; gap: 1.5rem; border-top: 1px solid var(--line); padding-top: 2rem; }
.org-group { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: 1rem 2rem; align-items: baseline; }
.org-group h2 { font-size: 1.0625rem; font-weight: 500; color: var(--ink-soft); font-stretch: 95%; }
.org-list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; font-family: var(--font-display); font-size: var(--step-1); font-weight: 500; font-stretch: 92%; }
.org-list abbr { text-decoration: none; cursor: help; }

/* Split section heads */
.split { display: grid; grid-template-columns: minmax(0, 20rem) minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 5rem); align-items: start; }
.split-head { display: grid; gap: 1rem; position: sticky; top: 6.5rem; }
.split-head p { color: var(--ink-soft); }

/* Service rows */
.rows { list-style: none; display: grid; border-top: 1px solid var(--line); }
.rows > li { border-bottom: 1px solid var(--line); padding-block: 1.5rem; display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: 0.5rem 2rem; }
.rows h3 { font-size: 1.25rem; }
.rows h3 a { color: var(--ink); text-decoration: none; }
.rows h3 a:hover { color: var(--lagoon); text-decoration: underline; }
.rows p { color: var(--ink-soft); }

/* Three-up */
.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 3rem); }
.three > div, .three > li { display: grid; gap: 0.75rem; align-content: start; min-width: 0; }
.three h3 { font-size: 1.25rem; }
.three p { color: var(--ink-soft); }
.section-title { display: grid; gap: 0.9rem; margin-bottom: clamp(2rem, 4vw, 3rem); max-width: 42rem; }
.section-title p { color: var(--ink-soft); }

/* Principles */
.principles { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 3rem); border-top: 2px solid var(--ink); padding-top: 1.75rem; }
.principles li { display: grid; gap: 0.6rem; align-content: start; }
.principles h3 { font-size: 1.25rem; }
.principles p { color: var(--ink-soft); }

/* Call to action */
.cta { background: var(--lagoon); color: var(--lagoon-ink); padding-block: clamp(3rem, 2rem + 4vw, 4.5rem); }
.cta-row { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 1.5rem 3rem; }
.cta-copy { display: grid; gap: 0.8rem; max-width: 40rem; }
.cta h2 { font-size: var(--step-2); }
.cta p { opacity: 0.92; }
.cta .btn { background: var(--lagoon-ink); color: var(--lagoon); border-color: var(--lagoon-ink); }

/* Page head (inner pages) */
.page-head { padding-block: clamp(3rem, 2rem + 4vw, 5rem) clamp(2rem, 1.5rem + 2vw, 3rem); }
.page-head + .section { padding-top: clamp(1.5rem, 1rem + 2vw, 2.5rem); }
.page-head .wrap { display: grid; gap: 1.25rem; }
.crumb { font-family: var(--font-display); font-size: 1rem; color: var(--ink-soft); }
.crumb a { color: var(--ink-soft); }

/* About */
.facts-table { margin: 0; display: grid; border-top: 1px solid var(--line); font-size: var(--step--1); }
.facts-table > div { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); gap: 1rem; padding-block: 0.7rem; border-bottom: 1px solid var(--line); }
.facts-table dt { font-family: var(--font-display); font-weight: 500; color: var(--ink-soft); }
.facts-table dd { margin: 0; }
.name-block { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 4rem); align-items: center; }
.name-tamil { font-family: var(--font-display); font-weight: 700; font-size: clamp(4.5rem, 3rem + 7vw, 8.5rem); line-height: 0.9; color: var(--lagoon); margin: 0; }
.founder { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 20rem); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.founder-head { display: grid; gap: 0.3rem; margin-bottom: 1.5rem; }
.founder-head p { font-family: var(--font-display); color: var(--ink-soft); font-size: 1.125rem; }
.aside { display: grid; gap: 1.75rem; }
.aside h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 0.6rem; }
.aside ul { list-style: none; display: grid; gap: 0.5rem; font-size: var(--step--1); }
.sub-title { font-size: 1.25rem; margin: 2.75rem 0 1.25rem; }
.timeline { list-style: none; display: grid; gap: 0; position: relative; margin-top: 0.5rem; }
.timeline li { position: relative; padding: 0 0 1.75rem 2rem; display: grid; gap: 0.2rem; }
.timeline li::before { content: ""; position: absolute; left: 0.3rem; top: 0.55rem; bottom: -0.55rem; width: 1px; background: var(--line); }
.timeline li:last-child::before { display: none; }
.timeline li::after { content: ""; position: absolute; left: 0; top: 0.35rem; width: 0.65rem; height: 0.65rem; border-radius: 50%; background: var(--paper); border: 2px solid var(--lagoon); }
.timeline li:last-child::after { background: var(--lagoon); }
.timeline .when { font-family: var(--font-display); font-size: 0.9375rem; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.timeline h3 { font-size: 1.1875rem; }
.timeline p { font-size: var(--step--1); color: var(--ink-soft); }

/* Services page */
.service { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.25rem clamp(2rem, 5vw, 5rem); padding-block: clamp(2rem, 4vw, 3rem); border-top: 1px solid var(--line); }
.service:last-child { border-bottom: 1px solid var(--line); }
.service-intro { display: grid; gap: 0.9rem; align-content: start; }
.service-intro p { color: var(--ink-soft); }
.service h3 { font-size: 1rem; font-weight: 500; color: var(--ink-soft); margin-bottom: 0.6rem; }
.ticks { list-style: none; display: grid; gap: 0.55rem; }
.ticks li { padding-left: 1.4rem; position: relative; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 0.6rem; height: 2px; background: var(--lagoon); }
.two-lists { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2rem, 5vw, 5rem); }
.two-lists h2 { margin-bottom: 1.25rem; }

/* Experience record */
.record { list-style: none; display: grid; border-top: 2px solid var(--ink); }
.record > li { display: grid; grid-template-columns: minmax(0, 17rem) minmax(0, 1fr); gap: 0.75rem clamp(1.5rem, 4vw, 3.5rem); padding-block: 1.75rem; border-bottom: 1px solid var(--line); }
.record-meta { margin: 0; display: grid; gap: 0.6rem; align-content: start; font-size: var(--step--1); }
.record-meta div { display: grid; gap: 0.05rem; }
.record-meta dt { font-family: var(--font-display); font-size: 0.875rem; color: var(--ink-soft); }
.record-meta dd { margin: 0; font-family: var(--font-display); font-weight: 500; font-size: 1.0625rem; line-height: 1.3; }
.record-body { display: grid; gap: 0.6rem; align-content: start; }
.record-body h3 { font-size: 1.3125rem; }
.record-body p { color: var(--ink-soft); }
.note { border-left: 3px solid var(--manjal); padding: 0.25rem 0 0.25rem 1.1rem; max-width: 42rem; color: var(--ink-soft); font-size: var(--step--1); }
.inst { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 11.5rem), 1fr)); gap: 1.25rem 2rem; }
.inst li { display: grid; gap: 0.15rem; border-top: 1px solid var(--line); padding-top: 0.9rem; }
.inst b { font-family: var(--font-display); font-weight: 600; font-size: 1.25rem; }
.inst span { color: var(--ink-soft); font-size: var(--step--1); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.form { display: grid; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.field { display: grid; gap: 0.4rem; min-width: 0; }
.field label { font-family: var(--font-display); font-weight: 500; font-size: 1.0625rem; }
.field .opt { color: var(--ink-soft); font-weight: 400; }
.field input, .field select, .field textarea {
  font: inherit; font-size: 1.0625rem; color: var(--ink); background: var(--field);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 0.75rem 0.85rem; width: 100%;
}
.field textarea { min-height: 10rem; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--lagoon); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; }
.form-status { font-size: var(--step--1); padding: 0.9rem 1rem; border-radius: var(--radius); border: 1px solid var(--line); background: var(--paper-2); }
.form-status[data-kind="ok"] { border-color: var(--lagoon); }
.form-status[data-kind="error"] { border-color: var(--manjal); }
.contact-card { display: grid; gap: 1.5rem; background: var(--paper-2); padding: clamp(1.5rem, 3vw, 2.25rem); border-radius: var(--radius); }
.contact-card dl { margin: 0; display: grid; gap: 1.1rem; }
.contact-card dt { font-family: var(--font-display); font-size: 0.9375rem; color: var(--ink-soft); }
.contact-card dd { margin: 0; font-family: var(--font-display); font-weight: 500; font-size: 1.25rem; line-height: 1.3; overflow-wrap: anywhere; }
.contact-card dd a { color: var(--ink); }

/* Footer */
.site-footer { padding-block: clamp(3rem, 2rem + 3vw, 4.5rem) 2rem; font-size: var(--step--1); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 0.8fr); gap: 2.5rem; }
.footer-grid h2 { font-size: 1rem; font-weight: 500; color: var(--deep-soft); margin-bottom: 0.8rem; }
.footer-grid ul { list-style: none; display: grid; gap: 0.45rem; }
.footer-brand { display: grid; gap: 1rem; align-content: start; }
.footer-brand .brand { color: var(--deep-ink); }
.footer-brand .brand-sub { color: var(--deep-soft); }
.footer-brand .brand-mark .mark-ground { fill: var(--deep-line); }
.footer-brand p { color: var(--deep-soft); max-width: 22rem; }
.footer-legal { margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--deep-line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; color: var(--deep-soft); }

/* WhatsApp chat button */
.wa-float {
  position: fixed; z-index: 30;
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.8rem 1.2rem 0.8rem 1rem; border-radius: 999px;
  background: var(--manjal); color: #10262B; text-decoration: none;
  font: 600 1.0625rem/1 var(--font-display); font-stretch: 95%;
  box-shadow: 0 6px 20px rgba(6, 28, 33, 0.28);
}
.wa-float:hover { filter: brightness(1.05); text-decoration: none; }
.wa-icon { width: 1.4rem; height: 1.4rem; flex: none; fill: currentColor; }
.wa-icon .wa-dot { fill: var(--manjal); }
.site-footer { padding-bottom: 5.5rem; }

/* Responsive */
@media (max-width: 60rem) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); align-items: start; }
  .aram-note { max-width: 32rem; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.75rem 0; }
  .fact:nth-child(3) { padding-left: 0; border-left: 0; }
  .split, .founder, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .split-head { position: static; }
  .three, .principles { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 52rem) {
  .menu-toggle { display: inline-flex; }
  .nav { position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 1px solid var(--line);
         flex-direction: column; align-items: stretch; gap: 0; padding: 0.5rem var(--gutter) 1.25rem; display: none; }
  .site-header.is-open .nav { display: flex; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav li a { display: block; padding-block: 0.85rem; border-bottom: 1px solid var(--line); }
  .nav ul a[aria-current="page"] { border-bottom-color: var(--line); }
  .nav .btn { margin-top: 1rem; }
  .org-group { grid-template-columns: minmax(0, 1fr); gap: 0.6rem; }
  .rows > li, .service, .record > li, .two-lists { grid-template-columns: minmax(0, 1fr); }
  .name-block { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 34rem) {
  .form-row { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .facts-table > div { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; }
  .brand-sub { font-size: 0.75rem; }
  .wa-long { display: none; }
  .wa-float { padding: 0.75rem 1rem; }
}
@media (max-width: 22rem) {
  .facts { grid-template-columns: minmax(0, 1fr); }
  .fact { padding-left: 0; border-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}
@media print {
  .site-header, .cta, .menu-toggle, .wa-float { display: none; }
  .on-deep { background: none; color: #000; }
}