/* ==========================================================================
   HDO — Human Development Organization
   Design system: deep green + amber on cream. Mobile-first.
   ========================================================================== */

/* ---------- 1. Custom properties ---------- */
:root {
  /* cream surface */
  --cream-50: #fbf8f0;
  --cream-100: #f6f1e6;
  --cream-200: #eee7d5;
  --card: #ffffff;
  /* deep green */
  --green-950: #072a1e;
  --green-900: #0c3b2a;
  --green-800: #11513a;
  --green-700: #176b4c;
  --green-600: #21805c;
  --green-100: #e2eee6;
  /* amber accent */
  --amber-700: #8f5b06;
  --amber-500: #d99a2b;
  --amber-400: #e8b54d;
  --amber-100: #f8ebd2;
  /* ink & lines */
  --ink-900: #1c2a23;
  --ink-700: #3e4f47;
  --ink-500: #66766d;
  --line: #e2dac6;
  --line-dark: rgba(255, 255, 255, 0.14);
  /* semantic */
  --link: var(--green-700);
  --focus: #b45309;
  --page-bg: var(--cream-100);
  --radius: 14px;
  --radius-sm: 9px;
  --container: 1120px;
  --header-h: 72px;
  --shadow-sm: 0 1px 3px rgba(7, 42, 30, 0.08);
  --shadow-md: 0 10px 30px rgba(7, 42, 30, 0.12);
  --font: "Inter", "Hind Siliguri", system-ui, -apple-system, "Segoe UI",
    Roboto, Arial, sans-serif;
}

/* ---------- 2. Reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-900);
  background: var(--page-bg);
  -webkit-font-smoothing: antialiased;
}

img,
svg,
iframe {
  display: block;
  max-width: 100%;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--green-900);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5em;
  line-height: 1.25;
  color: var(--green-950);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.9rem);
}

h2 {
  font-size: clamp(1.45rem, 3vw, 2rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1em;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: var(--amber-400);
  color: var(--green-950);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  background: var(--green-950);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
  color: #fff;
}

.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

/* ---------- 3. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--cream-50);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.2s;
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--green-950);
}

.brand:hover {
  color: var(--green-950);
}

.brand-mark {
  width: 40px;
  height: 40px;
  flex: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.brand-tag {
  font-size: 0.68rem;
  color: var(--ink-500);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* language toggle — segmented control */
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--green-700);
  border-radius: 999px;
  overflow: hidden;
  flex: none;
}

.lang-toggle button {
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
  color: var(--green-700);
  line-height: 1.2;
}

.lang-toggle button.is-active {
  background: var(--green-700);
  color: #fff;
}

/* desktop nav */
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
}

.site-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--ink-700);
  font-size: 0.95rem;
  font-weight: 500;
}

.site-nav a:hover {
  background: var(--green-100);
  color: var(--green-900);
}

.site-nav a.is-current {
  background: var(--green-100);
  color: var(--green-800);
  font-weight: 700;
}

/* hamburger */
.nav-toggle {
  display: none;
  flex: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  cursor: pointer;
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--green-900);
  border-radius: 2px;
  transition: 0.2s;
}

.nav-toggle span {
  top: 50%;
  margin-top: -1px;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: translateX(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: translateX(-50%) rotate(-45deg);
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s,
    transform 0.15s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--green-700);
  color: #fff;
}

.btn-primary:hover {
  background: var(--green-800);
  color: #fff;
}

.btn-outline {
  border-color: var(--green-700);
  color: var(--green-700);
  background: transparent;
}

.btn-outline:hover {
  background: var(--green-100);
  color: var(--green-800);
}

.btn-light {
  background: var(--cream-50);
  color: var(--green-900);
}

.btn-light:hover {
  background: #fff;
  color: var(--green-900);
}

.btn-ghost-light {
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
  background: transparent;
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

/* ---------- 5. Page hero (interior pages) ---------- */
.page-hero {
  background: linear-gradient(160deg, var(--green-900), var(--green-800));
  color: #fff;
  padding: 56px 0 48px;
  position: relative;
  overflow: hidden;
}

.page-hero .hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
}

.page-hero h1 {
  color: #fff;
  margin-bottom: 8px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-400);
  margin-bottom: 10px;
}

.page-hero .lead {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0;
}

/* ---------- 6. Sections ---------- */
.section {
  padding: 64px 0;
}

.section-tight {
  padding: 40px 0;
}

.section-alt {
  background: var(--cream-200);
}

.section-head {
  max-width: 640px;
  margin-bottom: 36px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.section-head .eyebrow {
  color: var(--amber-700);
}

.section-head h2 {
  margin-bottom: 10px;
}

.section-head p {
  color: var(--ink-500);
  margin: 0;
}

/* ---------- 7. Home hero ---------- */
.hero {
  background: linear-gradient(165deg, var(--green-950) 0%, var(--green-900) 55%, var(--green-800) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  padding: 88px 0 96px;
  max-width: 760px;
}

.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  padding: 6px 14px;
  color: var(--amber-400);
}

.hero h1 {
  color: #fff;
  margin: 18px 0 14px;
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  letter-spacing: -0.02em;
}

.hero-sub {
  color: rgba(255, 255, 255, 0.85);
  font-size: clamp(1.02rem, 1.6vw, 1.18rem);
  max-width: 620px;
  margin-bottom: 30px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 8. Vision quote band ---------- */
.vision-band {
  background: var(--card);
  border-block: 1px solid var(--line);
  padding: 44px 0;
}

.vision-quote {
  margin: 0;
  padding-left: 22px;
  border-left: 4px solid var(--amber-500);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 500;
  color: var(--green-900);
  line-height: 1.55;
}

.vision-quote footer {
  margin-top: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-500);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- 9. Stats band ---------- */
.stats-band {
  background: var(--green-900);
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.stat-tile {
  text-align: center;
  color: #fff;
}

.stat-number {
  display: block;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 700;
  color: var(--amber-400);
  line-height: 1.1;
}

.stat-label {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
}

/* ---------- 10. Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--green-100);
  color: var(--green-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  margin-bottom: 8px;
}

.card p {
  color: var(--ink-500);
  font-size: 0.95rem;
  margin: 0;
}

.card-link {
  display: inline-block;
  margin-top: 14px;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--green-700);
}

.card-link::after {
  content: " →";
}

.card-link:hover {
  color: var(--green-900);
}

/* partner cards */
.partner-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.partner-mono {
  flex: none;
  width: 58px;
  height: 58px;
  border-radius: var(--radius-sm);
  background: var(--green-900);
  color: var(--amber-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.partner-card h3 {
  margin-bottom: 4px;
}

.partner-meta {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--amber-700);
  margin-bottom: 8px;
}

.partner-card p {
  font-size: 0.93rem;
}

/* news cards */
.news-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

.news-card-img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  width: 100%;
  background: var(--green-100);
}

.news-card-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-date {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber-700);
  margin-bottom: 8px;
}

.news-card-body h3 {
  margin-bottom: 8px;
}

.news-card-body p {
  flex: 1;
}

/* ---------- 11. About page ---------- */
.about-blocks {
  display: grid;
  gap: 20px;
}

.vm-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.vm-card {
  border-top: 4px solid var(--amber-500);
}

.vm-card h3 {
  color: var(--amber-700);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.vm-card p {
  font-size: 1.05rem;
  color: var(--ink-900);
  margin: 0;
}

.fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.fact-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.fact-list li::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber-500);
  transform: translateY(-1px);
}

.fact-list strong {
  color: var(--green-900);
}

/* exec committee table */
.table-wrap {
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

table.exec-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
  font-size: 0.94rem;
}

.exec-table th {
  text-align: left;
  background: var(--green-900);
  color: #fff;
  font-weight: 600;
  padding: 12px 16px;
  white-space: nowrap;
}

.exec-table td {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  vertical-align: top;
}

.exec-table tr:nth-child(even) td {
  background: var(--cream-50);
}

/* ---------- 12. Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
}

.gallery-item {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.gallery-item img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
}

.gallery-item figcaption {
  padding: 10px 14px;
  font-size: 0.88rem;
  color: var(--ink-700);
}

.gallery-group-title {
  grid-column: 1 / -1;
  margin: 18px 0 2px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 1.1rem;
}

.gallery-note {
  background: var(--amber-100);
  border: 1px solid var(--amber-400);
  border-radius: var(--radius);
  padding: 14px 20px;
  color: var(--amber-700);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

/* ---------- 13. News & post ---------- */
.news-list {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

.news-empty {
  background: var(--card);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--ink-500);
}

.post-article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 32px 28px;
  max-width: 780px;
}

.post-article img.post-img {
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  aspect-ratio: 16 / 9;
  width: 100%;
  object-fit: cover;
}

.post-article h1 {
  margin-bottom: 10px;
}

.post-article .news-date {
  margin-bottom: 20px;
}

.post-article p {
  color: var(--ink-700);
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-weight: 600;
  text-decoration: none;
  color: var(--green-700);
}

.back-link::before {
  content: "← ";
}

.back-link:hover {
  color: var(--green-900);
}

/* ---------- 14. Contact ---------- */
.contact-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

.contact-card {
  padding: 26px 24px;
}

.contact-card h2 {
  font-size: 1.2rem;
}

.contact-card h3 {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-700);
  margin: 20px 0 8px;
}

.contact-card h3:first-child {
  margin-top: 0;
}

.contact-card p,
.contact-card address {
  margin: 0;
  font-style: normal;
  color: var(--ink-700);
}

.contact-line {
  display: block;
  margin-bottom: 4px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  text-decoration: none;
  color: var(--ink-900);
  font-weight: 500;
}

.contact-method:hover {
  color: var(--green-700);
}

.contact-method .contact-method-icon {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--green-100);
  color: var(--green-700);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-method .contact-method-icon svg {
  width: 19px;
  height: 19px;
}

.map-frame {
  width: 100%;
  height: 340px;
  border: 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

/* ---------- 15. CTA band ---------- */
.cta-band {
  background: linear-gradient(150deg, var(--green-800), var(--green-700));
  color: #fff;
  text-align: center;
  padding: 64px 0;
}

.cta-band h2 {
  color: #fff;
  margin-bottom: 10px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin: 0 auto 26px;
}

/* ---------- 16. Footer ---------- */
.site-footer {
  background: var(--green-950);
  color: rgba(255, 255, 255, 0.78);
  padding: 56px 0 32px;
  font-size: 0.93rem;
}

.footer-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand .brand-tag {
  color: rgba(255, 255, 255, 0.55);
}

.footer-mission {
  max-width: 320px;
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.site-footer h3 {
  color: #fff;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--amber-400);
}

.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
}

.footer-contact a:hover {
  color: var(--amber-400);
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

/* ---------- 17. 404 ---------- */
.error-page {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  padding: 64px 0;
}

.error-code {
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  line-height: 1;
  color: var(--green-800);
  margin-bottom: 8px;
}

.error-page h1 {
  margin-bottom: 12px;
}

.error-page p {
  color: var(--ink-500);
  margin-bottom: 26px;
}

/* ---------- 18. Utilities ---------- */
.text-center {
  text-align: center;
}

.mt-0 {
  margin-top: 0;
}

.mt-28 {
  margin-top: 28px;
}

.mb-28 {
  margin-bottom: 28px;
}

.mb-16 {
  margin-bottom: 16px;
}

.mb-0 {
  margin-bottom: 0;
}

.note-text {
  color: var(--ink-500);
}

.about-text-card {
  padding: 32px 28px;
}

/* partner strip chips */
.partner-strip {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.partner-chip .partner-mono {
  margin: 0 auto 12px;
}

.partner-chip h3 {
  font-size: 0.95rem;
}

/* ---------- 19. Responsive ---------- */
@media (min-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 640px) {
  .vm-grid {
    grid-template-columns: 1fr 1fr;
  }

  .news-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 5fr 7fr;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1.4fr;
  }
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .news-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* mobile nav: hamburger shown, nav panel hidden until opened */
@media (max-width: 899px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--cream-50);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    padding: 12px 24px 20px;
    gap: 2px;
  }

  .site-nav a {
    padding: 12px 10px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 80px 0;
  }
}

/* ---------- 20. Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}