/* ==========================================================
 * BDDPA — Vercel-Monochrome Design System v3
 * Complete file - Replace your existing style.css with this
 * ========================================================== */

:root {
  /* Grayscale + one accent — no navy, no teal, no emerald tinting. */
  --black:   #000000;
  --near:    #0a0a0a;
  --graphite:#171717;
  --coal:    #262626;

  /* Legacy token names retained so any --navy-* / --teal-* references
     inside JS-generated inline styles still resolve to the new palette. */
  --navy-950: #000000;
  --navy-900: #0a0a0a;
  --navy-800: #171717;
  --navy-700: #262626;
  --teal-600: #0061d5;
  --teal-500: #0070f3;
  --teal-400: #60a5fa;
  --teal-300: #93c5fd;
  --emerald-600: #0061d5;
  --emerald-500: #0070f3;
  --gold-500:   #a1a1aa;

  --ink-900: #0a0a0a;
  --ink-800: #171717;
  --ink-700: #262626;
  --ink-600: #404040;
  --ink-500: #525252;
  --ink-400: #737373;
  --ink-300: #a3a3a3;
  --ink-200: #e5e5e5;
  --ink-100: #ededed;
  --ink-50:  #fafafa;
  --paper:   #ffffff;
  --accent:  #0070f3;
  --accent-hover: #0061d5;

  /* Layered elevation — neutral, no color tint */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.05), 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md:  0 1px 3px rgba(0,0,0,0.06), 0 8px 24px -12px rgba(0,0,0,0.14);
  --shadow-lg:  0 2px 4px rgba(0,0,0,0.05), 0 24px 48px -20px rgba(0,0,0,0.20);
  --shadow-xl:  0 4px 8px rgba(0,0,0,0.06), 0 40px 80px -30px rgba(0,0,0,0.30);
  --shadow-glow-teal:    0 10px 28px -14px rgba(0,112,243,0.55);
  --shadow-glow-emerald: 0 10px 28px -14px rgba(0,112,243,0.45);

  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 24px;

  --ring-teal: 0 0 0 4px rgba(0,112,243,0.18);
  --ring-navy: 0 0 0 4px rgba(0,0,0,0.08);
}

/* ===== Global typographic base ===== */
html { scroll-behavior: smooth; }
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11", "kern";
  background: var(--paper);
  color: var(--ink-900);
  font-family: 'Hind Siliguri', 'Noto Sans Bengali', system-ui, sans-serif;
}

::selection { background: rgba(0,112,243,0.18); color: var(--near); }

.font-latin, [dir="ltr"] {
  font-family: 'Inter', system-ui, sans-serif;
  font-feature-settings: "ss01", "cv11", "tnum";
  letter-spacing: -0.011em;
}

/* ===================== BUTTONS ===================== */
.btn-primary,
.btn-secondary,
.btn-ghost,
.btn-outline {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .625rem 1rem;
  font-weight: 500;
  font-size: .8125rem;
  line-height: 1;
  border-radius: var(--radius-md);
  transition: transform .15s cubic-bezier(.2,.7,.2,1), box-shadow .18s cubic-bezier(.2,.7,.2,1), background .18s, color .18s, border-color .18s, opacity .18s;
  white-space: nowrap;
  user-select: none;
  isolation: isolate;
  letter-spacing: -0.005em;
  text-decoration: none;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--near);
  color: #fff;
  box-shadow: var(--shadow-sm), inset 0 0 0 1px rgba(255,255,255,.06);
}
.btn-primary:hover   { background: #262626; box-shadow: var(--shadow-md); }
.btn-primary:active  { transform: translateY(0); background: #000; }

.btn-secondary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-glow-teal), inset 0 0 0 1px rgba(255,255,255,.08);
}
.btn-secondary:hover { background: var(--accent-hover); }

.btn-outline {
  background: #fff;
  color: var(--near);
  border: 1px solid var(--ink-200);
  box-shadow: var(--shadow-xs);
}
.btn-outline:hover {
  border-color: var(--ink-300);
  background: var(--ink-50);
}

.btn-ghost { background: transparent; color: var(--ink-700); }
.btn-ghost:hover { background: var(--ink-100); color: var(--near); }

.btn-lg {
  padding: .8125rem 1.25rem;
  font-size: .875rem;
  border-radius: var(--radius-md);
}

.btn-primary.w-full, .btn-secondary.w-full, .btn-outline.w-full {
  width: 100%;
  justify-content: center;
}

/* Focus states */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: var(--ring-teal);
  border-radius: var(--radius-sm);
}

/* ===================== NAV ===================== */
[data-nav] {
  position: relative;
  transition: color .15s, background .15s;
  color: var(--ink-500);
  text-decoration: none;
}
[data-nav]:hover { color: var(--near); background: var(--ink-50); }
[data-nav].is-active {
  color: var(--near);
  background: var(--ink-100);
}
[data-nav].is-active::after {
  content: '';
  position: absolute;
  left: 12px; right: 12px;
  bottom: 3px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--near);
}

.drawer-link {
  display: flex; align-items: center; gap: .75rem;
  padding: .75rem .875rem; border-radius: var(--radius-md);
  color: var(--ink-700);
  font-weight: 500;
  transition: background .15s, color .15s, transform .15s;
  text-decoration: none;
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  font-size: .875rem;
}
.drawer-link:hover { background: var(--ink-100); color: var(--near); }
.drawer-link.is-active {
  background: var(--ink-100);
  color: var(--near);
  box-shadow: inset 2px 0 0 var(--near);
}
.drawer-link i {
  flex-shrink: 0;
}

.social-btn {
  display: inline-flex; width: 2.25rem; height: 2.25rem;
  border-radius: var(--radius-sm);
  align-items: center; justify-content: center;
  background: rgba(255,255,255,.04); color: #a3a3a3;
  border: 1px solid rgba(255,255,255,.08);
  transition: all .18s cubic-bezier(.2,.7,.2,1);
  text-decoration: none;
}
.social-btn:hover {
  background: #fff;
  color: var(--near);
  border-color: #fff;
  transform: translateY(-1px);
}

.footer-link {
  color: #a3a3a3;
  transition: color .15s;
  display: inline-block;
  text-decoration: none;
}
.footer-link:hover { color: #fff; }

/* Sticky header states (JS toggles .is-scrolled) */
#site-header > div > div {
  transition: background .3s, box-shadow .3s, border-color .3s;
  border-color: transparent !important;
  background: transparent !important;
  box-shadow: none !important;
}
#site-header.is-scrolled > div > div {
  background: rgba(255, 255, 255, 0.85) !important;
  border-color: var(--ink-100) !important;
  box-shadow: 0 1px 0 var(--ink-100), 0 10px 30px -18px rgba(0,0,0,0.14) !important;
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
}

/* ===================== CARDS ===================== */
.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .2s cubic-bezier(.2,.7,.2,1), box-shadow .2s cubic-bezier(.2,.7,.2,1), border-color .18s;
}
.card:hover {
  border-color: var(--ink-200);
  box-shadow: var(--shadow-md);
}

/* ===================== CHIPS ===================== */
.chip {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .22rem .65rem;
  font-size: 11px; font-weight: 500; line-height: 1.4;
  border-radius: 999px;
  background: var(--ink-100);
  color: var(--ink-700);
  border: 1px solid var(--ink-200);
  letter-spacing: 0;
}
.chip-teal    { background: #eff6ff; color: #0052b3; border-color: #dbeafe; }
.chip-emerald { background: #ecfdf5; color: #065f46; border-color: #d1fae5; }
.chip-gold    { background: #fffbeb; color: #92400e; border-color: #fde68a; }
.chip-red     { background: #fef2f2; color: #991b1b; border-color: #fecaca; }

/* ===================== FORM INPUTS ===================== */
.input, .textarea, .select {
  width: 100%;
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-md);
  padding: .75rem .875rem;
  font-size: .875rem;
  color: var(--near);
  transition: border-color .15s, background .15s, box-shadow .18s, color .15s;
  font-feature-settings: "kern", "ss01";
  font-family: inherit;
}
.input::placeholder,
.textarea::placeholder { color: var(--ink-400); font-weight: 400; }

.input:hover, .textarea:hover, .select:hover { border-color: var(--ink-300); }
.input:focus, .textarea:focus, .select:focus {
  background: #fff;
  border-color: var(--accent);
  box-shadow: var(--ring-teal);
  outline: none;
}

.textarea {
  min-height: 100px;
  resize: vertical;
}

.field { position: relative; }
.field-icon {
  position: absolute; left: .875rem; top: 50%; transform: translateY(-50%);
  color: var(--ink-400);
  pointer-events: none;
  transition: color .15s;
}
.field:focus-within .field-icon { color: var(--accent); }
.field .input.with-icon { padding-left: 2.5rem; }

.label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--ink-600);
  margin-bottom: .375rem;
  letter-spacing: 0;
}

/* ===================== HERO BACKDROP ===================== */
.hero-bg {
  position: relative;
  background: radial-gradient(ellipse 55% 45% at 15% 8%, rgba(0,112,243,0.22), transparent 60%), radial-gradient(ellipse 50% 40% at 88% 92%, rgba(0,112,243,0.10), transparent 65%), linear-gradient(180deg, #000000 0%, #0a0a0a 55%, #171717 100%);
  color: #fff;
  overflow: hidden;
}
.hero-bg::before {
  content: '';
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 78%);
  pointer-events: none;
}
.hero-blob {
  position: absolute;
  width: 22rem; height: 22rem;
  border-radius: 50%;
  filter: blur(100px);
  opacity: .5;
  pointer-events: none;
  background: rgba(0,112,243,0.55) !important;
  animation: heroBlob 14s ease-in-out infinite;
}
@keyframes heroBlob {
  0%, 100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(18px,-24px) scale(1.06); }
}

/* ===================== SHIMMER SKELETON ===================== */
.shimmer {
  background: linear-gradient(90deg, #f4f4f5 0%, #fafafa 50%, #f4f4f5 100%);
  background-size: 800px 100%;
  animation: shimmer 1.6s linear infinite;
  border-radius: 4px;
}
@keyframes shimmer { 0% { background-position:-800px 0 } 100% { background-position:800px 0 } }

/* ===================== VERIFIED BADGE ===================== */
.verified-badge {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .3rem .65rem; border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0;
  box-shadow: 0 4px 12px -4px rgba(0,112,243,.45), inset 0 0 0 1px rgba(255,255,255,.14);
  position: relative;
  overflow: hidden;
}
.verified-badge::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.28) 50%, transparent 70%);
  transform: translateX(-120%);
  animation: badgeShine 4.5s ease-in-out infinite;
}
@keyframes badgeShine {
  0%, 60%   { transform: translateX(-120%); }
  75%, 100% { transform: translateX(120%); }
}

/* ===================== PROSE ===================== */
.prose-bn {
  font-family: 'Hind Siliguri', 'Noto Sans Bengali', system-ui, sans-serif;
  line-height: 1.85;
  color: var(--ink-600);
  font-size: .9375rem;
}
.prose-bn p + p { margin-top: 1.1rem; }

/* ===================== SECTION HEADINGS ===================== */
.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-500);
  font-weight: 500;
}
.eyebrow::before {
  content: '';
  width: 20px; height: 1px;
  background: var(--ink-300);
}

.h-section {
  font-family: 'Noto Sans Bengali', 'Hind Siliguri', sans-serif;
  font-weight: 700;
  color: var(--near);
  letter-spacing: -0.022em;
  line-height: 1.12;
}

/* Gradient divider */
.divider-grad {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-200) 40%, var(--ink-200) 60%, transparent);
}

/* ===================== TIMELINE ===================== */
.timeline-item { position: relative; padding-left: 2rem; }
.timeline-item::before {
  content: ''; position: absolute; left: .375rem; top: .4rem; bottom: -1.5rem;
  width: 1px;
  background: linear-gradient(180deg, var(--ink-200) 0%, var(--ink-100) 100%);
}
.timeline-item::after {
  content: ''; position: absolute; left: 0; top: .3rem;
  width: .8rem; height: .8rem; border-radius: 999px;
  background: #fff;
  border: 1.5px solid var(--near);
  box-shadow: 0 0 0 4px rgba(0,0,0,.04);
}
.timeline-item:last-child::before { display: none; }

/* ===================== TOAST ===================== */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex; align-items: center; gap: .625rem;
  padding: .8125rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: .8125rem; font-weight: 500;
  color: #fff;
  background: var(--near);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(255,255,255,.06);
  animation: toastIn .28s cubic-bezier(.2,.7,.2,1);
  max-width: min(92vw, 420px);
  letter-spacing: -0.005em;
}
.toast-success { background: var(--near); border-left: 4px solid #10b981; }
.toast-error   { background: var(--near); border-left: 4px solid #ef4444; }
.toast-warning { background: var(--near); border-left: 4px solid #f59e0b; }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px) scale(.98); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}

/* ===================== TABLE POLISH ===================== */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: .875rem;
}
thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-500);
  padding: .75rem 1rem;
  background: var(--ink-50);
  border-bottom: 1px solid var(--ink-100);
  position: sticky;
  top: 0;
  z-index: 1;
}
thead th:first-child { border-top-left-radius: var(--radius-md); }
thead th:last-child  { border-top-right-radius: var(--radius-md); }
tbody td {
  padding: .875rem 1rem;
  border-bottom: 1px solid var(--ink-100);
  color: var(--ink-700);
  vertical-align: middle;
}
tbody tr { transition: background .12s; }
tbody tr:hover td { background: var(--ink-50); }
tbody tr:last-child td { border-bottom: none; }

/* ===================== UTILITY CLASSES ===================== */
.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.shadow-soft { box-shadow: var(--shadow-sm); }
.shadow-card { box-shadow: var(--shadow-md); }
.shadow-elevated { box-shadow: var(--shadow-lg); }

.animate-fade-in { animation: fadeIn .4s ease-out both; }
.animate-fade-in-up { animation: fadeInUp .5s cubic-bezier(.2,.7,.2,1) both; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.bg-gradient-medical {
  background: linear-gradient(135deg, #000000 0%, #0a0a0a 60%, #171717 100%);
}

.bg-grid-pattern {
  background-image: linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 24px 24px;
}

.ring-1.ring-ink-100 { box-shadow: 0 0 0 1px var(--ink-100); }

/* ===================== PRINT ===================== */
@media print {
  .no-print { display: none !important; }
  body { background: #fff; color: #000; padding-top: 0 !important; }
  .card { break-inside: avoid; box-shadow: none; border-color: #d4d4d8; }
}

/* ===================== SCROLLBAR ===================== */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--ink-200);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--ink-300); background-clip: content-box; }

/* ===================== REDUCED MOTION ===================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ===================== MOBILE POLISH ===================== */
@media (max-width: 640px) {
  .btn-primary, .btn-secondary, .btn-outline, .btn-ghost { padding: .625rem .875rem; font-size: .8125rem; }
  .btn-lg { padding: .75rem 1.125rem; }
  .card { border-radius: var(--radius-md); }
  .card:hover { transform: none; }
  .toast { left: 1rem; right: 1rem; bottom: 1rem; max-width: none; transform: none; }
  .toast { left: 1rem; right: 1rem; bottom: 1rem; max-width: none; }
  .timeline-item { padding-left: 1.5rem; }
}

/* ===================== MICRO-INTERACTIONS ===================== */
.card img { transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.card:hover img { transform: scale(1.015); }

.ring-1.ring-ink-100 { box-shadow: 0 0 0 1px var(--ink-100); }

/* Tight Vercel/Geist headings */
h1, h2, .h-section { letter-spacing: -0.024em; }
h3    { letter-spacing: -0.015em; }

/* Add missing utility classes used by components.js */
.min-h-screen { min-height: 100vh; }
.min-h-dvh { min-height: 100dvh; }
.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.break-words { word-wrap: break-word; }
.shrink-0 { flex-shrink: 0; }
.flex-grow { flex-grow: 1; }
.grid place-items-center { display: grid; place-items: center; }
.w-full { width: 100%; }
.max-w-7xl { max-width: 80rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }