/* ============================================================
   MoST Sindh Portal — Base: reset, typography, layout, utilities
   Mobile-first
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* RTL + language fonts */
html[dir="rtl"] body { font-family: var(--font-sindhi); }
html[lang="ur"] body { font-family: var(--font-urdu); line-height: 2; }
html[lang="ur"] .no-urdu, html[lang="sd"] .no-rtl { font-family: var(--font-sans) !important; line-height: 1.55 !important; }

img, svg, video { display: block; max-width: 100%; }
svg { fill: none; stroke-width: 0; }
a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }

/* ---- Headings ---- */
h1, h2, h3, h4, h5 { line-height: 1.25; font-weight: 700; color: var(--text); letter-spacing: -0.01em; }
h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); font-weight: 800; }
h2 { font-size: clamp(1.3rem, 4vw, 1.8rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }
p { color: var(--text-soft); }

::selection { background: var(--green-100); color: var(--green-600); }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ink-300); border-radius: var(--r-full); border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-400); }

/* ============================================================
   Layout primitives
   ============================================================ */
.app-shell { display: flex; min-height: 100dvh; }

.content-area {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  margin-left: var(--sidebar-w);
  transition: margin-left var(--dur) var(--ease);
}
body.sidebar-collapsed .content-area { margin-left: var(--sidebar-w-collapsed); }

.main {
  flex: 1;
  padding: clamp(16px, 3vw, 28px);
  max-width: var(--content-max);
  width: 100%;
  margin: 0 auto;
  padding-bottom: calc(var(--bottom-nav-h) + 20px); /* room for mobile bottom nav */
}

.page-head { margin-bottom: 22px; }
.page-head h1 { font-size: clamp(1.35rem, 4vw, 1.7rem); }
.page-head p { color: var(--text-muted); margin-top: 4px; font-size: .92rem; }

/* ---- Grid utilities ---- */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; gap: 12px; align-items: center; }
.row-wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.between { justify-content: space-between; }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-auto { grid-template-columns: 1fr; gap: 12px; }
  .stack { gap: 12px; }
}

/* ---- Spacing utils ---- */
.mt-0{margin-top:0}.mt-1{margin-top:4px}.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}
.mb-0{margin-bottom:0}.mb-1{margin-bottom:4px}.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}
.gap-1{gap:4px}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}

/* ---- Text utils ---- */
.muted { color: var(--text-muted); }
.soft  { color: var(--text-soft); }
.center{ text-align: center; }
.right { text-align: right; }
.small { font-size: .82rem; }
.tiny  { font-size: .72rem; }
.bold  { font-weight: 600; }
.semibold { font-weight: 600; }
.ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ---- Misc ---- */
.hide { display: none !important; }
.full-w { width: 100%; }
.no-shrink { flex-shrink: 0; }
.mono { font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace; }
.nowrap { white-space: nowrap; }
.cursor-pointer { cursor: pointer; }

/* Visually-hidden but accessible */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ---- Animations ---- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: scale(1); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
@keyframes shimmer { 100% { transform: translateX(100%); } }
@keyframes ping { 75%,100% { transform: scale(2); opacity: 0; } }

.fade-in { animation: fadeIn var(--dur) var(--ease); }
.slide-up { animation: slideUp var(--dur-slow) var(--ease-out); }

/* ---- Skeleton loaders ---- */
.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--bg-subtle);
  border-radius: var(--r-sm);
}
.skeleton::after {
  content: '';
  position: absolute; inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
  animation: shimmer 1.4s infinite;
}

/* ---- Icon sizing ---- */
.icon { width: 20px; height: 20px; flex-shrink: 0; }
.icon-sm { width: 16px; height: 16px; }
.icon-lg { width: 24px; height: 24px; }
.icon-xl { width: 32px; height: 32px; }
.icon use, .icon-sm use, .icon-lg use, .icon-xl use { pointer-events: none; }