/* ==========================================================================
   Pakistan Society of Sugar Technologists (PSST) — Modern Stylesheet
   Mobile-first. No frameworks. Theme: deep emerald + cane amber.
   ========================================================================== */

/* --- Design tokens ------------------------------------------------------- */
:root {
  --c-primary:        #0a6e3d;   /* Deep sugarcane green */
  --c-primary-dark:   #064d2a;
  --c-primary-light:  #159959;
  --c-accent:         #d4a017;   /* Cane amber / gold */
  --c-accent-dark:    #a87a08;
  --c-text:           #1f2933;
  --c-text-soft:      #4b5563;
  --c-text-muted:     #6b7280;
  --c-bg:             #ffffff;
  --c-bg-alt:         #f7faf8;
  --c-bg-soft:        #eef4f0;
  --c-border:         #d8e3dc;
  --c-border-strong:  #b8c8be;
  --c-danger:         #b91c1c;
  --c-success:        #15803d;
  --c-info:           #1d4ed8;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow:    0 4px 12px rgba(15, 23, 42, .08);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, .10);

  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 14px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans",
               sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-serif: Georgia, "Times New Roman", "Noto Serif", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --container: 1200px;
  --gutter: 1rem;
}

/* --- Reset / base -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, picture, svg, video { max-width: 100%; height: auto; display: block; }
img { border: 0; }

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color .15s ease, text-decoration-color .15s ease;
}
a:hover { color: var(--c-primary-dark); text-decoration: underline; }

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  line-height: 1.25;
  color: var(--c-primary-dark);
  font-weight: 700;
}
h1 { font-size: clamp(1.6rem, 2.4vw + 1rem, 2.4rem); }
h2 { font-size: clamp(1.35rem, 1.6vw + .8rem, 1.85rem); }
h3 { font-size: clamp(1.15rem, 1vw + .7rem, 1.4rem); }
h4 { font-size: 1.1rem; }
p  { margin: 0 0 1rem; }

/* Lists */
ul, ol { padding-left: 1.4rem; }
li { margin-bottom: .25rem; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: .95rem; }
th, td { padding: .6rem .75rem; text-align: left; border-bottom: 1px solid var(--c-border); }
th { background: var(--c-bg-soft); color: var(--c-primary-dark); font-weight: 600; }
tbody tr:hover { background: var(--c-bg-alt); }

/* --- Layout helpers ------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--c-primary);
  color: #fff;
  padding: .5rem 1rem;
  z-index: 1000;
  transition: top .2s;
}
.skip-link:focus { top: 0; color: #fff; }

/* --- Header / Top bar ---------------------------------------------------- */
.site-header {
  background: linear-gradient(135deg, var(--c-primary-dark) 0%, var(--c-primary) 60%, var(--c-primary-light) 100%);
  color: #fff;
  position: relative;
  box-shadow: var(--shadow);
}
.site-header a { color: #fff; }

.topbar {
  background: rgba(0, 0, 0, .18);
  font-size: .85rem;
  padding: .35rem 0;
}
.topbar .container {
  display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; align-items: center; justify-content: space-between;
}
.topbar .topbar-links a { color: rgba(255,255,255,.85); }
.topbar .topbar-links a:hover { color: #fff; text-decoration: underline; }
.topbar .topbar-meta { color: rgba(255,255,255,.78); }

.brandbar {
  padding: 1.1rem 0;
}
.brandbar .container {
  display: flex; align-items: center; gap: 1rem;
}
.brandbar .logo {
  width: 64px; height: 64px; flex: 0 0 64px; border-radius: 50%;
  background: #fff; display: grid; place-items: center;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.brandbar .logo img { width: 100%; height: 100%; object-fit: cover; }
.brandbar .brand-text { line-height: 1.15; }
.brandbar .brand-text .name {
  font-size: clamp(1.05rem, 1.4vw + .5rem, 1.6rem);
  font-weight: 800; letter-spacing: .2px;
  color: #fff;
}
.brandbar .brand-text .tag {
  font-size: .8rem;
  color: rgba(255, 255, 255, .85);
  margin-top: .15rem;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.brandbar .mobile-toggle {
  margin-left: auto;
  background: transparent;
  border: 1px solid rgba(255,255,255,.4);
  color: #fff;
  border-radius: var(--radius-sm);
  padding: .45rem .65rem;
  cursor: pointer;
  display: none;
}
.brandbar .mobile-toggle svg { width: 24px; height: 24px; }

/* --- Navigation ---------------------------------------------------------- */
.site-nav {
  background: var(--c-primary-dark);
  border-top: 1px solid rgba(255,255,255,.12);
}
.site-nav .container { padding: 0 var(--gutter); }
.site-nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0;
}
.site-nav li { margin: 0; }
.site-nav a {
  display: block;
  padding: .85rem 1rem;
  color: #fff;
  font-size: .95rem;
  font-weight: 500;
  border-bottom: 3px solid transparent;
  transition: background .15s ease, border-color .15s ease;
}
.site-nav a:hover, .site-nav a.is-active {
  background: rgba(0, 0, 0, .15);
  border-bottom-color: var(--c-accent);
  text-decoration: none;
  color: #fff;
}
.site-nav .has-sub { position: relative; }
.site-nav .sub-menu {
  display: none;
  position: absolute;
  top: 100%; left: 0;
  background: #fff;
  color: var(--c-text);
  min-width: 240px;
  box-shadow: var(--shadow-lg);
  z-index: 50;
  border-radius: 0 0 var(--radius) var(--radius);
}
.site-nav .has-sub:hover .sub-menu,
.site-nav .has-sub:focus-within .sub-menu { display: block; }
.site-nav .sub-menu a {
  color: var(--c-text);
  padding: .6rem 1rem;
  border-bottom: 1px solid var(--c-border);
  font-size: .9rem;
}
.site-nav .sub-menu a:hover { background: var(--c-bg-soft); color: var(--c-primary-dark); }

/* --- Hero --------------------------------------------------------------- */
.hero {
  position: relative;
  background:
    linear-gradient(rgba(10, 50, 30, .72), rgba(10, 50, 30, .82)),
    url('../images/header.jpg') center/cover no-repeat;
  color: #fff;
  padding: 4rem 0 3rem;
  text-align: center;
}
.hero h1 { color: #fff; }
.hero p.lead { font-size: 1.15rem; max-width: 720px; margin: 0 auto 1.5rem; color: rgba(255,255,255,.92); }
.hero .hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; }

/* --- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-block;
  padding: .65rem 1.25rem;
  font-size: .95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .1s ease;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary  { background: var(--c-accent); color: #1a1a1a; border-color: var(--c-accent); }
.btn-primary:hover { background: var(--c-accent-dark); border-color: var(--c-accent-dark); color: #fff; text-decoration: none; }
.btn-secondary { background: transparent; color: #fff; border-color: #fff; }
.btn-secondary:hover { background: #fff; color: var(--c-primary-dark); text-decoration: none; }
.btn-outline { background: transparent; color: var(--c-primary); border-color: var(--c-primary); }
.btn-outline:hover { background: var(--c-primary); color: #fff; text-decoration: none; }
.btn-sm { padding: .35rem .8rem; font-size: .85rem; }

/* --- Sections / page layout --------------------------------------------- */
main { padding: 2.5rem 0; }
main h1 { margin-bottom: 1rem; }

.section { padding: 2.25rem 0; }
.section-alt { background: var(--c-bg-alt); }
.section-title {
  text-align: center;
  margin-bottom: 1.75rem;
}
.section-title h2 { margin-bottom: .25rem; }
.section-title p { color: var(--c-text-soft); max-width: 720px; margin: 0 auto; }

/* --- Cards / grid -------------------------------------------------------- */
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--c-border-strong); }
.card h3 { margin-top: 0; font-size: 1.1rem; color: var(--c-primary-dark); }
.card .meta { color: var(--c-text-muted); font-size: .85rem; margin-bottom: .5rem; }
.card .more { font-weight: 600; }

.card.event {
  border-left: 4px solid var(--c-accent);
}
.card.event .meta { color: var(--c-accent-dark); font-weight: 600; }

.card.feature {
  background: linear-gradient(160deg, #fff 0%, var(--c-bg-soft) 100%);
  border-color: var(--c-border-strong);
}

.icon-circle {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--c-bg-soft);
  color: var(--c-primary);
  display: grid; place-items: center;
  margin-bottom: .75rem;
  font-size: 1.4rem;
}

/* --- News list ----------------------------------------------------------- */
.news-list { list-style: none; padding: 0; margin: 0; }
.news-list li {
  padding: .9rem 0;
  border-bottom: 1px solid var(--c-border);
}
.news-list li:last-child { border-bottom: 0; }
.news-list .news-date {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--c-primary);
  background: var(--c-bg-soft);
  padding: .15rem .5rem;
  border-radius: var(--radius-sm);
  margin-bottom: .35rem;
}
.news-list p { margin: .25rem 0 .4rem; }
.news-list .news-link { font-size: .9rem; font-weight: 600; }

/* --- Callouts / banners ------------------------------------------------- */
.callout {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  padding: 1.5rem 1.25rem;
  border-radius: var(--radius);
  text-align: center;
  margin: 1.5rem 0;
}
.callout h2, .callout h3 { color: #fff; margin-top: 0; }
.callout p { color: rgba(255,255,255,.92); margin-bottom: 1rem; }

.notice {
  background: #fff7ed;
  border-left: 4px solid var(--c-accent);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin: 1rem 0;
}
.notice h3, .notice h4 { color: var(--c-accent-dark); margin-top: 0; }

/* --- Sidebar layout ----------------------------------------------------- */
.layout-2col {
  display: grid; gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .layout-2col { grid-template-columns: 2fr 1fr; }
  .layout-2col.sidebar-left { grid-template-columns: 1fr 2fr; }
}

aside.sidebar {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
aside.sidebar h2, aside.sidebar h3 { font-size: 1.15rem; margin-top: 0; }
aside.sidebar ul { list-style: none; padding: 0; margin: 0; }
aside.sidebar li { border-bottom: 1px solid var(--c-border); }
aside.sidebar li:last-child { border-bottom: 0; }
aside.sidebar a { display: block; padding: .5rem 0; font-weight: 500; }

/* --- Breadcrumbs -------------------------------------------------------- */
.breadcrumbs {
  background: var(--c-bg-soft);
  border-bottom: 1px solid var(--c-border);
  padding: .65rem 0;
  font-size: .85rem;
}
.breadcrumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .35rem; }
.breadcrumbs li { display: flex; align-items: center; gap: .35rem; margin: 0; }
.breadcrumbs li:not(:last-child)::after { content: '/'; color: var(--c-text-muted); margin-left: .35rem; }
.breadcrumbs a { color: var(--c-primary); }
.breadcrumbs [aria-current="page"] { color: var(--c-text-soft); }

/* --- Gallery ------------------------------------------------------------ */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: .75rem;
}
.gallery a {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-soft);
  aspect-ratio: 4 / 3;
}
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.gallery a:hover img { transform: scale(1.05); }

/* Legacy gallery spans: convert flat <span id="images"> with anchors into a grid */
#images.gallery,
.gallery-photos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: .65rem;
  margin: 1rem 0;
}
#images.gallery a,
.gallery-photos a {
  display: block;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--c-bg-soft);
  aspect-ratio: 4 / 3;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}
#images.gallery a:hover,
.gallery-photos a:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
#images.gallery img,
.gallery-photos img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .3s ease;
}
#images.gallery a:hover img,
.gallery-photos a:hover img { transform: scale(1.05); }

/* Gallery with larger tiles for hero images */
.gallery.gallery-lg {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* Image count badge */
.gallery-meta {
  display: flex; align-items: center; gap: .75rem;
  margin-bottom: 1rem;
  color: var(--c-text-soft);
  font-size: .9rem;
}
.gallery-meta .count {
  display: inline-flex; align-items: center; gap: .35rem;
  background: var(--c-bg-soft);
  color: var(--c-primary-dark);
  padding: .2rem .6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .85rem;
}

/* --- Forms -------------------------------------------------------------- */
form .field { margin-bottom: 1rem; }
form label { display: block; font-weight: 600; margin-bottom: .3rem; }
form input[type="text"],
form input[type="email"],
form input[type="tel"],
form textarea,
form select {
  width: 100%;
  padding: .55rem .7rem;
  font: inherit;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
}
form input:focus, form textarea:focus, form select:focus {
  outline: 2px solid var(--c-accent);
  outline-offset: 1px;
  border-color: var(--c-primary);
}
form textarea { min-height: 120px; resize: vertical; }

/* --- Footer ------------------------------------------------------------- */
.site-footer {
  background: #0c2a1b;
  color: rgba(255, 255, 255, .85);
  padding: 2.5rem 0 1rem;
  margin-top: 3rem;
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: var(--c-accent); }
.site-footer h3 { color: #fff; font-size: 1rem; text-transform: uppercase; letter-spacing: .8px; margin-bottom: .85rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .35rem; }
.site-footer-grid {
  display: grid; gap: 1.5rem;
  grid-template-columns: 1fr;
  margin-bottom: 1.5rem;
}
@media (min-width: 640px) { .site-footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }

.site-footer .contact-line { display: flex; gap: .5rem; align-items: flex-start; margin-bottom: .35rem; }
.site-footer .contact-line .ic { flex: 0 0 18px; color: var(--c-accent); }

.site-footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 1rem;
  font-size: .85rem;
  display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; justify-content: space-between; align-items: center;
  color: rgba(255,255,255,.7);
}
.powered-by {
  display: inline-flex; align-items: center; gap: .35rem;
  color: #fff; font-weight: 600;
}
.powered-by a { color: var(--c-accent); }
.powered-by a:hover { color: #fff; text-decoration: underline; }

/* --- Document list / downloads ------------------------------------------ */
.doc-list { list-style: none; padding: 0; margin: 0; }
.doc-list li {
  padding: .75rem 0;
  border-bottom: 1px solid var(--c-border);
  display: flex; gap: .75rem; align-items: center; flex-wrap: wrap;
}
.doc-list li:last-child { border-bottom: 0; }
.doc-list .doc-icon {
  flex: 0 0 28px;
  height: 36px;
  display: grid; place-items: center;
  background: var(--c-bg-soft);
  color: var(--c-primary);
  border-radius: 4px;
  font-size: .7rem; font-weight: 700;
}
.doc-list .doc-icon.pdf { background: #fde8e8; color: #b91c1c; }
.doc-list .doc-icon.doc { background: #e0e7ff; color: #3730a3; }
.doc-list .doc-icon.img { background: #ecfdf5; color: #047857; }
.doc-list .doc-info { flex: 1 1 auto; min-width: 200px; }
.doc-list .doc-info .doc-title { font-weight: 600; display: block; }
.doc-list .doc-info .doc-meta { color: var(--c-text-muted); font-size: .85rem; }
.doc-list .doc-action { margin-left: auto; }

/* --- Bylaws / Rules typography ---------------------------------------- */
.prose {
  max-width: 80ch;
  font-size: 1rem;
  line-height: 1.75;
}
.prose h2, .prose h3, .prose h4 { margin-top: 1.5em; }
.prose ol li, .prose ul li { margin-bottom: .35em; }
.prose hr { border: 0; border-top: 1px solid var(--c-border); margin: 2rem 0; }

/* --- Print -------------------------------------------------------------- */
@media print {
  .site-header, .site-nav, .breadcrumbs, .site-footer, .skip-link, .no-print { display: none !important; }
  body { color: #000; background: #fff; font-size: 12pt; }
  a { color: #000; text-decoration: underline; }
  main { padding: 0; }
}

/* --- Mobile menu toggle states ----------------------------------------- */
@media (max-width: 900px) {
  .brandbar .mobile-toggle { display: inline-flex; align-items: center; }
  .site-nav { display: none; }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; }
  .site-nav a { padding: .9rem 1rem; border-bottom: 1px solid rgba(255,255,255,.12); }
  .site-nav .has-sub .sub-menu { position: static; box-shadow: none; background: rgba(0,0,0,.15); }
  .site-nav .sub-menu a { color: #fff; border-bottom-color: rgba(255,255,255,.12); }
  .site-nav .sub-menu a:hover { background: rgba(0,0,0,.25); color: #fff; }
}

@media (max-width: 480px) {
  .topbar { font-size: .8rem; }
  .brandbar { padding: .75rem 0; }
  .brandbar .logo { width: 50px; height: 50px; flex-basis: 50px; }
  .hero { padding: 2.5rem 0; }
  main { padding: 1.75rem 0; }
  .section { padding: 1.5rem 0; }
}

/* --- Lightbox ---------------------------------------------------------- */
.psst-lightbox {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, .88);
  display: none;
  align-items: center; justify-content: center;
  z-index: 1100;
  padding: 1.5rem;
}
.psst-lightbox.is-open { display: flex; flex-direction: column; }
.psst-lightbox .psst-lb-img {
  max-width: 100%; max-height: 80vh; object-fit: contain; border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,.6);
}
.psst-lightbox .psst-lb-caption {
  color: #fff; margin-top: .75rem; font-size: .9rem; text-align: center;
  max-width: 90ch;
}
.psst-lightbox .psst-lb-counter {
  color: rgba(255,255,255,.6); margin-top: .35rem; font-size: .8rem; text-align: center;
}
.psst-lightbox button {
  position: absolute;
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 0;
  width: 44px; height: 44px;
  border-radius: 50%;
  font-size: 1.5rem; line-height: 1;
  cursor: pointer;
  transition: background .15s ease;
}
.psst-lightbox button:hover { background: rgba(255,255,255,.25); }
.psst-lightbox .psst-lb-close  { top: 1rem; right: 1rem; font-size: 1.8rem; }
.psst-lightbox .psst-lb-prev   { left: 1rem;  top: 50%; transform: translateY(-50%); }
.psst-lightbox .psst-lb-next   { right: 1rem; top: 50%; transform: translateY(-50%); }
@media (max-width: 600px) {
  .psst-lightbox .psst-lb-prev,
  .psst-lightbox .psst-lb-next { top: auto; bottom: 1rem; transform: none; }
  .psst-lightbox .psst-lb-prev { left: 1rem; }
  .psst-lightbox .psst-lb-next { right: 1rem; }
}

/* --- Utility classes ---------------------------------------------------- */
.text-center { text-align: center; }
.text-muted  { color: var(--c-text-muted); }
.text-soft   { color: var(--c-text-soft); }
.mt-0 { margin-top: 0; } .mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; }
.hide-mobile { display: none; }
@media (min-width: 900px) { .hide-mobile { display: initial; } .show-mobile { display: none; } }