:root {
  color-scheme: light;
  --brand-indigo: #6366f1; /* Indigo-500 (Primary Brand Accent) */
  --brand-violet: #8b5cf6; /* Violet-500 */
  --brand-purple: #7c3aed; /* Purple-600 */
  --brand-fuchsia: #d946ef; /* Fuchsia-500 */
  --brand-pink: #ec4899; /* Pink-500 */
  --brand-cyan: #06b6d4; /* Cyan-500 */
  --brand-sky: #0ea5e9; /* Sky-500 */
  --brand-blue: #3b82f6; /* Blue-500 */
  --brand-emerald: #10b981; /* Emerald-500 */
  --brand-teal: #14b8a6; /* Teal-500 */
  --brand-lime: #84cc16; /* Lime-500 (Highlight Accent) */
  --brand-amber: #f59e0b; /* Amber-500 (Streak Accent) */
  --brand-rose: #f43f5e; /* Rose-500 */
  --brand-deep: #09090b; /* Zinc-950 (Text Deep) */
  --brand-ink: #18181b; /* Zinc-900 (Text Ink) */
  --brand-gray: #71717a; /* Zinc-500 */
  --font-display: 'Inter', 'Hind Siliguri', sans-serif;
  --font-body: 'Inter', 'Hind Siliguri', sans-serif;
  --font-accent: 'Inter', 'Hind Siliguri', sans-serif;

  /* ===== Bento palette ===== */
  --b-cyan: #06b6d4;
  --b-sky: #0ea5e9;
  --b-blue: #3b82f6;
  --b-violet: #8b5cf6;
  --b-purple: #7c3aed;
  --b-fuchsia: #d946ef;
  --b-pink: #ec4899;
  --b-emerald: #10b981;
  --b-teal: #14b8a6;
  --b-amber: #f59e0b;
  --b-rose: #f43f5e;
  --b-lime: #84cc16;
  --b-zinc: #71717a;
  --b-gray: #a1a1a1;

  /* Colorful brand gradients */
  --grad-brand: linear-gradient(135deg, #6366f1, #8b5cf6 45%, #d946ef); /* Indigo -> Fuchsia */
  --grad-violet: linear-gradient(160deg, #a78bfa, #8b5cf6 50%, #6d28d9); /* Violet gradient */
  --grad-indigo: linear-gradient(160deg, #818cf8, #6366f1 50%, #4f46e5); /* Indigo gradient */
  --grad-cyan: linear-gradient(160deg, #22d3ee, #06b6d4 50%, #0891b2);
  --grad-blue: linear-gradient(160deg, #60a5fa, #3b82f6 50%, #1d4ed8);
  --grad-fuchsia: linear-gradient(160deg, #e879f9, #d946ef 50%, #a21caf);
  --grad-pink: linear-gradient(160deg, #f472b6, #ec4899 50%, #be185d);
  --grad-emerald: linear-gradient(160deg, #34d399, #10b981 50%, #047857);
  --grad-teal: linear-gradient(160deg, #2dd4bf, #14b8a6 50%, #0f766e);
  --grad-amber: linear-gradient(160deg, #fbbf24, #f59e0b 50%, #b45309);
  --grad-rose: linear-gradient(160deg, #fb7185, #f43f5e 50%, #be123c);
  --grad-sky: linear-gradient(160deg, #38bdf8, #0ea5e9 50%, #0369a1);
  --grad-lime: linear-gradient(160deg, #a3e635, #84cc16 50%, #4d7c0f);
  --grad-zinc: linear-gradient(160deg, #ffffff, #fafafa 50%, #f4f4f5);
  --grad-gray: linear-gradient(160deg, #ffffff, #fafafa 50%, #f4f4f5);

  /* Glossy 3D tile shadow */
  --glossy-shadow:
    inset 0 1px 0 0 rgba(255, 255, 255, 0.4),
    inset 0 2px 6px 0 rgba(255, 255, 255, 0.3),
    inset 0 -1px 0 0 rgba(0, 0, 0, 0.18),
    0 1px 2px 0 rgba(0, 0, 0, 0.08),
    0 2px 4px 0 rgba(0, 0, 0, 0.06),
    0 4px 8px 0 rgba(0, 0, 0, 0.05),
    0 6px 14px 0 rgba(0, 0, 0, 0.04);

  /* Soft minimalist card shadows */
  --card-shadow: 0 4px 18px rgba(9, 9, 11, 0.03);
  --card-shadow-hover: 0 12px 30px rgba(9, 9, 11, 0.08);

  /* Bootstrap brand overrides mapped to Indigo */
  --bs-primary: #6366f1;
  --bs-primary-rgb: 99, 102, 241;
  --bs-link-color-rgb: 99, 102, 241;
  --bs-link-hover-color-rgb: 79, 70, 229;
  --bs-focus-ring-color: rgba(99, 102, 241, 0.2);
}
body {
  font-family: var(--font-body);
  background-color: #ffffff;
}
.site-body {
  min-height: 100vh;
}
.card {
  border: 1px solid #e4e4e7;
  border-radius: 1.05rem;
  box-shadow: var(--card-shadow);
}
.card:hover {
  transform: translateY(-3px);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: var(--card-shadow-hover);
}

/* ===== Brand Header (light glass, matches component grading) ===== */
.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  background: transparent;
  border-bottom: none;
  box-shadow: none;
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1;
  background: linear-gradient(90deg, var(--brand-indigo, #6366f1), var(--brand-fuchsia, #d946ef), var(--brand-cyan, #06b6d4), var(--brand-lime, #84cc16));
  background-size: 200% 100%;
  animation: headerAccentShift 9s linear infinite;
}
@keyframes headerAccentShift {
  to {
    background-position: 200% 0;
  }
}
.site-header-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 8% -40%, rgba(99, 102, 241, 0.08), transparent 45%),
    radial-gradient(circle at 95% -30%, rgba(217, 70, 239, 0.06), transparent 40%);
}
.site-header .navbar {
  position: relative;
  z-index: 2;
  padding-top: 2rem;
  padding-bottom: 1.25rem;
}
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  padding: 0.2rem 0;
  margin-right: 2.5rem !important;
}
.site-brand .brand-badge {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background: #ffffff;
  border: 1.5px solid rgba(99, 102, 241, 0.18);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.15), 0 0 0 3px rgba(99, 102, 241, 0.05);
  overflow: hidden;
  padding: 4px;
  flex-shrink: 0;
}
.site-brand .brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
}
.site-brand .brand-name {
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, #4f46e5 0%, #8b5cf6 50%, #d946ef 100%);
  color: #4f46e5;
  filter: drop-shadow(0 1px 4px rgba(99, 102, 241, 0.15));
}
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .site-brand .brand-name {
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }
}
.site-header .nav-link {
  color: #52525b !important;
  font-family: var(--font-accent);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  position: relative;
  border-radius: 999px;
  padding: 0.62rem 1.4rem !important;
  transition: color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}
.site-header .navbar-nav {
  gap: 0.4rem;
}
.site-header .nav-link::after {
  content: "";
  position: absolute;
  left: 1.05rem;
  right: 1.05rem;
  bottom: 0.15rem;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--brand-indigo, #6366f1), var(--brand-fuchsia, #d946ef));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.site-header .nav-link:hover,
.site-header .nav-link:focus {
  color: #18181b !important;
  background: rgba(24, 24, 27, 0.04);
}
.site-header .nav-link:hover::after,
.site-header .nav-link.active::after {
  transform: scaleX(1);
}
.site-header .nav-link.active {
  color: #4f46e5 !important;
}
.site-header .nav-cta {
  color: #fff !important;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.03em;
  background-image: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  padding: 0.45rem 1.15rem !important;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4), 0 8px 24px rgba(124, 58, 237, 0.25);
}
.site-header .nav-cta::after {
  display: none;
}
.site-header .nav-cta:hover,
.site-header .nav-cta:focus {
  color: #fff !important;
  filter: brightness(1.08);
}
.site-header .streak-link {
  color: #d97706 !important;
}
.site-header .streak-link::after {
  display: none;
}
.site-header .streak-link:hover,
.site-header .streak-link:focus {
  color: #b45309 !important;
  background: rgba(245, 158, 11, 0.08);
}
.site-header .navbar-toggler {
  border-color: rgba(24, 24, 27, 0.2);
  border-radius: 10px;
}
@media (max-width: 991.98px) {
  .site-header .navbar-collapse {
    padding: 1.5rem 0.75rem;
    background: rgba(30, 27, 46, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    margin-top: 1rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }
  .site-header .navbar-collapse .navbar-nav {
    gap: 0.8rem;
  }
  .site-header .nav-cta {
    display: inline-flex;
    margin-top: 0.7rem;
  }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
  .site-header .navbar {
    padding-top: 1.5rem;
    padding-bottom: 1rem;
  }
  .site-brand {
    gap: 0.6rem;
    margin-right: 1.25rem !important;
  }
  .site-brand .brand-badge {
    width: 42px;
    height: 42px;
    font-size: 1.15rem;
    border-radius: 13px;
  }
  .site-brand .brand-name {
    font-size: 1.3rem;
  }
  .site-header .nav-link {
    padding: 0.5rem 0.85rem !important;
    font-size: 0.83rem;
  }
  .site-header .navbar-nav {
    gap: 0.15rem;
  }
}

/* ===== Transparent header over hero (homepage) ===== */
.site-header--overlay {
  position: absolute;
  background: none;
  border-bottom: none;
  box-shadow: none;
}
.site-header--overlay::before,
.site-header--overlay .site-header-glow {
  display: none;
}
@media (max-width: 991.98px) {
  .site-header--overlay .navbar-collapse {
    background: rgba(30, 27, 46, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    margin-top: 0.5rem;
    padding: 0.9rem 1rem;
  }
}

/* ===== Shared light backdrop behind transparent header ===== */
.page-top-band {
  height: 120px;
  background: linear-gradient(135deg, #ffffff 0%, #eef2ff 55%, #f5f3ff 100%);
  position: relative;
  overflow: hidden;
}
.page-top-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 0%, rgba(99, 102, 241, 0.08), transparent 45%),
    radial-gradient(circle at 90% 10%, rgba(217, 70, 239, 0.06), transparent 42%),
    radial-gradient(circle at 50% -20%, rgba(14, 165, 233, 0.06), transparent 40%),
    radial-gradient(circle at 40% 0%, rgba(132, 204, 22, 0.05), transparent 45%);
}
.page-top-band::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1, #d946ef, #06b6d4, #84cc16);
}
@media (max-width: 575.98px) {
  .page-top-band {
    height: 100px;
  }
}

/* ===== Brand Footer (light with color accents) ===== */
.site-footer {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #ffffff 0%, #fafafa 40%, #eef2ff 70%, #f5f3ff 100%);
  color: #27272a;
  font-family: var(--font-body);
}
.footer-accent {
  position: relative;
  height: 4px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #d946ef, #06b6d4, #84cc16);
}
.footer-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 15% 0%, rgba(99, 102, 241, 0.07), transparent 45%),
    radial-gradient(circle at 90% 20%, rgba(217, 70, 239, 0.05), transparent 40%);
}
.site-footer .container {
  position: relative;
  z-index: 1;
}
.footer-brand-badge {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: #ffffff;
  border: 1.5px solid rgba(99, 102, 241, 0.18);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.12);
  overflow: hidden;
  padding: 3px;
  flex-shrink: 0;
}
.footer-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
}
.footer-brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, #4f46e5, #8b5cf6 50%, #d946ef);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  filter: drop-shadow(0 1px 3px rgba(99, 102, 241, 0.12));
}
.footer-brand-tag {
  font-family: var(--font-accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #8b5cf6;
}
.footer-desc {
  color: #52525b;
  font-size: 0.9rem;
  font-weight: 400;
  line-height: 1.7;
  max-width: 320px;
}
.footer-title {
  position: relative;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #18181b;
  margin-bottom: 1.1rem;
  padding-bottom: 0.55rem;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, #6366f1, #d946ef);
}
.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #4b5563;
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 0.18s ease, transform 0.18s ease;
}
.footer-link::before {
  content: "\f105";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.7rem;
  color: #6366f1;
  opacity: 0.7;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.footer-link:hover {
  color: #4f46e5;
  transform: translateX(3px);
}
.footer-link:hover::before {
  opacity: 1;
  transform: translateX(2px);
}
.social-btn {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: rgba(99, 102, 241, 0.08);
  color: #6366f1;
  font-size: 0.88rem;
  border: 1px solid rgba(99, 102, 241, 0.2);
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.social-btn:hover {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 6px 14px rgba(99, 102, 241, 0.35);
}
.footer-bottom {
  position: relative;
  border-top: 1px solid rgba(24, 24, 27, 0.08);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
}
.footer-copy {
  color: #71717a;
  font-family: var(--font-body);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

/* ===== Bento color system (global shared components) ===== */
/* Buttons */
.btn:not(.rounded-pill) {
  border-radius: 0.8rem;
  font-weight: 600;
}
.btn-primary {
  --bs-btn-bg: #6366f1;
  --bs-btn-color: #fff;
  background-color: #6366f1;
  background-image: var(--grad-brand);
  border: 1px solid #4f46e5;
  box-shadow: var(--glossy-shadow), 0 8px 18px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover,
.btn-primary:focus {
  background-color: #4f46e5;
  background-image: linear-gradient(135deg, #8b5cf6, #6366f1 55%, #4f46e5);
  border-color: #4338ca;
  box-shadow: var(--glossy-shadow), 0 10px 24px rgba(99, 102, 241, 0.45);
}
.btn-primary:focus-visible {
  box-shadow: 0 0 0 0.25rem var(--bs-focus-ring-color);
}
.btn-primary:active,
.btn-primary.active {
  background-color: #4f46e5;
  background-image: linear-gradient(135deg, #4338ca, #4f46e5);
}
.btn-success {
  --bs-btn-bg: #10b981;
  --bs-btn-color: #fff;
  background-color: #10b981;
  background-image: var(--grad-emerald);
  border: 1px solid #059669;
  box-shadow: var(--glossy-shadow), 0 8px 18px rgba(16, 185, 129, 0.3);
}
.btn-success:hover,
.btn-success:focus {
  background-color: #059669;
  background-image: linear-gradient(160deg, #34d399, #10b981 55%, #047857);
  border-color: #047857;
  box-shadow: var(--glossy-shadow), 0 10px 24px rgba(16, 185, 129, 0.45);
}
.btn-success:active,
.btn-success.active {
  background-color: #047857;
  background-image: linear-gradient(160deg, #047857, #059669);
}
.btn-info {
  --bs-btn-bg: #06b6d4;
  --bs-btn-color: #fff;
  background-color: #06b6d4;
  background-image: var(--grad-cyan);
  border: 1px solid #0891b2;
  box-shadow: var(--glossy-shadow), 0 8px 18px rgba(6, 182, 212, 0.3);
}
.btn-info:hover,
.btn-info:focus {
  background-color: #0891b2;
  background-image: linear-gradient(160deg, #22d3ee, #06b6d4 55%, #0e7490);
  border-color: #0e7490;
  box-shadow: var(--glossy-shadow), 0 10px 24px rgba(6, 182, 212, 0.45);
}
.btn-info:active,
.btn-info.active {
  background-color: #0e7490;
  background-image: linear-gradient(160deg, #0e7490, #0891b2);
}
.btn-danger {
  --bs-btn-bg: #f43f5e;
  --bs-btn-color: #fff;
  background-color: #f43f5e;
  background-image: var(--grad-rose);
  border: 1px solid #e11d48;
  box-shadow: var(--glossy-shadow), 0 8px 18px rgba(244, 63, 94, 0.3);
}
.btn-danger:hover,
.btn-danger:focus {
  background-color: #e11d48;
  background-image: linear-gradient(160deg, #fb7185, #f43f5e 55%, #be123c);
  border-color: #be123c;
  box-shadow: var(--glossy-shadow), 0 10px 24px rgba(244, 63, 94, 0.45);
}
.btn-danger:active,
.btn-danger.active {
  background-color: #be123c;
  background-image: linear-gradient(160deg, #be123c, #e11d48);
}
.btn-warning {
  --bs-btn-bg: #f59e0b;
  --bs-btn-color: #fff;
  background-color: #f59e0b;
  background-image: var(--grad-amber);
  border: 1px solid #d97706;
  box-shadow: var(--glossy-shadow), 0 8px 18px rgba(245, 158, 11, 0.3);
}
.btn-warning:hover,
.btn-warning:focus {
  background-color: #d97706;
  background-image: linear-gradient(160deg, #fbbf24, #f59e0b 55%, #b45309);
  border-color: #b45309;
  color: #fff;
  box-shadow: var(--glossy-shadow), 0 10px 24px rgba(245, 158, 11, 0.45);
}
.btn-warning:active,
.btn-warning.active {
  background-color: #b45309;
  background-image: linear-gradient(160deg, #b45309, #d97706);
  color: #fff;
}
.btn-secondary {
  --bs-btn-bg: #f4f4f5;
  --bs-btn-color: #18181b;
  background-color: #f4f4f5;
  background-image: linear-gradient(180deg, #ffffff, #f4f4f5);
  border: 1px solid #e4e4e7;
  color: #18181b;
  box-shadow: 0 2px 5px rgba(9, 9, 11, 0.05);
}
.btn-secondary:hover,
.btn-secondary:focus {
  background-color: #e4e4e7;
  background-image: linear-gradient(180deg, #fafafa, #e4e4e7);
  border-color: #d1d5db;
  color: #09090b;
  box-shadow: 0 4px 10px rgba(9, 9, 11, 0.08);
}
.btn-secondary:active,
.btn-secondary.active {
  background-color: #e4e4e7;
  background-image: linear-gradient(180deg, #e4e4e7, #d1d5db);
  color: #09090b;
}

/* Outline buttons */
.btn-outline-primary {
  color: #6366f1;
  border-color: #6366f1;
  background: transparent;
}
.btn-outline-primary:hover,
.btn-outline-primary:focus {
  background-image: var(--grad-indigo);
  color: #fff;
  border-color: #4f46e5;
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
}
.btn-outline-success {
  color: #10b981;
  border-color: #10b981;
  background: transparent;
}
.btn-outline-success:hover,
.btn-outline-success:focus {
  background-image: var(--grad-emerald);
  color: #fff;
  border-color: #059669;
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
}
.btn-outline-danger {
  color: #f43f5e;
  border-color: #f43f5e;
  background: transparent;
}
.btn-outline-danger:hover,
.btn-outline-danger:focus {
  background-image: var(--grad-rose);
  color: #fff;
  border-color: #e11d48;
  box-shadow: 0 6px 16px rgba(244, 63, 94, 0.3);
}
.btn-outline-warning {
  color: #d97706;
  border-color: #d97706;
  background: transparent;
}
.btn-outline-warning:hover,
.btn-outline-warning:focus {
  background-image: var(--grad-amber);
  color: #fff;
  border-color: #b45309;
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.3);
}
.btn-outline-info {
  color: #0891b2;
  border-color: #0891b2;
  background: transparent;
}
.btn-outline-info:hover,
.btn-outline-info:focus {
  background-image: var(--grad-cyan);
  color: #fff;
  border-color: #0e7490;
  box-shadow: 0 6px 16px rgba(6, 182, 212, 0.3);
}
.btn-outline-secondary {
  color: #52525b;
  border-color: #d1d5db;
}
.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
  background-color: #fafafa;
  color: #09090b;
  border-color: #a1a1a1;
}
.btn-light {
  border-color: #e4e4e7;
}
.btn-link {
  color: var(--bs-primary);
}

/* Badges */
.badge {
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(9, 9, 11, 0.04);
}
.badge:not(.rounded-pill) {
  border-radius: 0.45rem;
}
.badge.bg-primary {
  background-color: #eef2ff !important; /* indigo tinted white */
  background-image: none !important;
  color: #4338ca !important;
  border: 1px solid #c7d2fe;
}
.badge.bg-success {
  background-color: #ecfdf5 !important; /* emerald tinted white */
  background-image: none !important;
  color: #047857 !important;
  border: 1px solid #a7f3d0;
}
.badge.bg-warning {
  background-color: #fffbeb !important; /* amber tinted white */
  background-image: none !important;
  color: #b45309 !important;
  border: 1px solid #fde68a;
}
.badge.bg-danger {
  background-color: #fff1f2 !important; /* rose tinted white */
  background-image: none !important;
  color: #be123c !important;
  border: 1px solid #fecdd3;
}
.badge.bg-info {
  background-color: #ecfeff !important; /* cyan tinted white */
  background-image: none !important;
  color: #0e7490 !important;
  border: 1px solid #a5f3fc;
}
.badge.bg-secondary {
  background-color: #fafafa !important;
  background-image: none !important;
  color: #52525b !important;
  border: 1px solid #e4e4e7;
}
.badge.bg-light {
  background-color: #faf9f6 !important;
  color: #18181b !important;
  border: 1px solid #e4e4e7;
}
.badge.bg-dark {
  background-color: #09090b !important;
  color: #ffffff !important;
}

/* Form controls */
.form-control:focus,
.form-select:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.15);
}
.form-check-input:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.15);
}
.form-check-input:checked {
  background-color: var(--bs-primary);
  border-color: var(--bs-primary);
}
.progress {
  background-color: #f4f4f5;
  border-radius: 999px;
}
.progress-bar.bg-primary {
  background-color: var(--bs-primary);
  background-image: var(--grad-brand);
}

/* Glossy 3D tile utilities (bento look) */
.g3d {
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 0.9rem;
  color: #fff;
  box-shadow: var(--glossy-shadow);
}
.g3d-violet { background: var(--grad-violet); }
.g3d-cyan { background: var(--grad-cyan); }
.g3d-blue { background: var(--grad-blue); }
.g3d-fuchsia { background: var(--grad-fuchsia); }
.g3d-pink { background: var(--grad-pink); }
.g3d-emerald { background: var(--grad-emerald); }
.g3d-teal { background: var(--grad-teal); }
.g3d-amber { background: var(--grad-amber); }
.g3d-brand { background: var(--grad-brand); }
.g3d-sky { background: var(--grad-sky); }
.g3d-lime { background: var(--grad-lime); }
.g3d-zinc { background: var(--grad-zinc); }
.g3d-gray { background: var(--grad-gray); }

.text-gradient {
  background: linear-gradient(135deg, #4f46e5, #8b5cf6 50%, #d946ef);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hatched {
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 6px,
    rgba(99, 102, 241, 0.06) 6px,
    rgba(99, 102, 241, 0.06) 7px
  );
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
}
.chip-violet { background: #f5f3ff; color: #6d28d9; border: 1px solid #ddd6fe; }
.chip-cyan { background: #ecfeff; color: #0e7490; border: 1px solid #a5f3fc; }
.chip-blue { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.chip-emerald { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.chip-amber { background: #fffbeb; color: #b45309; border: 1px solid #fde68a; }
.chip-pink { background: #fdf2f8; color: #be185d; border: 1px solid #fbcfe8; }
.chip-sky { background: #f0f9ff; color: #0369a1; border: 1px solid #bae6fd; }
.chip-lime { background: #f7fee7; color: #4d7c0f; border: 1px solid #d9f99d; }
.chip-zinc { background: #fafafa; color: #3f3f46; border: 1px solid #e4e4e7; }
.chip-gray { background: #faf9f6; color: #3f3f46; border: 1px solid #e4e4e7; }

/* ===== Stem card (উদ্দীপক) ===== */
.stem-card {
  border: 1px solid #e4e4e7;
  border-left: 5px solid #6366f1;
  border-radius: 0.85rem;
  background: linear-gradient(160deg, #ffffff 0%, #f5f3ff 60%, #eef2ff 100%);
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.05);
}
.stem-card-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px dashed #c7d2fe;
}
.stem-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.32rem 0.8rem;
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
}
.stem-hint {
  font-size: 0.78rem;
  font-style: italic;
  color: #a1a1a1;
}
.stem-text-body {
  font-size: 0.96rem;
  font-weight: 500;
  line-height: 1.65;
  color: #18181b;
  white-space: pre-wrap;
}
.stem-img-wrap img {
  max-height: 280px;
  object-fit: contain;
}

@media (prefers-reduced-motion: reduce) {
  .card:hover,
  .btn:hover {
    transform: none !important;
  }
}

/* Prevent Tailwind preflight from breaking Bootstrap collapse component */
.collapse:not(.show) {
  display: none !important;
}
.navbar-collapse.collapse {
  visibility: visible !important;
}
@media (min-width: 1200px) {
  .navbar-expand-xl .navbar-collapse {
    display: flex !important;
    visibility: visible !important;
  }
}

/* Header Token Pill */
.nav-token-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #b45309;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
  margin-left: 0.25rem;
  margin-right: 0.25rem;
  position: relative;
}
.nav-token-pill:hover {
  background: rgba(245, 158, 11, 0.22);
  border-color: rgba(245, 158, 11, 0.6);
  color: #92400e;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.18);
}
.nav-token-pill .token-icon {
  font-size: 0.9rem;
  color: #f59e0b;
  animation: pulse-coin 2.5s infinite;
}
.nav-token-pill .token-count {
  font-family: var(--font-display);
  font-weight: 800;
  color: #78350f;
}
.nav-token-pill .token-lbl {
  font-size: 0.72rem;
  font-weight: 600;
  opacity: 0.85;
}
.nav-token-pill .badge-vip-dot {
  width: 7px;
  height: 7px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
  margin-left: 2px;
}
@keyframes pulse-coin {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* ===== Verified Premium Badge (Golden Rosette) ===== */
.user-verified-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 4px;
  vertical-align: middle;
  line-height: 1;
  filter: drop-shadow(0 1px 2.5px rgba(202, 138, 4, 0.45));
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.2s ease;
  cursor: pointer;
  flex-shrink: 0;
}
.user-verified-badge:hover {
  transform: scale(1.22);
  filter: drop-shadow(0 2px 6px rgba(234, 179, 8, 0.75));
}
.user-verified-badge svg {
  display: inline-block;
  vertical-align: middle;
}

/* ═══════════════════════════════════════════════════
   UIVERSE ANIMATED DOWNLOAD BUTTON (BRAND THEMED)
   ═══════════════════════════════════════════════════ */
.button-download,
.uiverse-download-btn {
  position: relative;
  width: 165px;
  height: 42px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  border: 1px solid #4338ca;
  background-color: #4f46e5;
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.28);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 0;
  outline: none;
}

.button-download, 
.button-download .button__icon, 
.button-download .button__text,
.uiverse-download-btn,
.uiverse-download-btn .button__icon,
.uiverse-download-btn .button__text {
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.button-download .button__text,
.uiverse-download-btn .button__text {
  transform: translateX(18px);
  color: #ffffff;
  font-weight: 700;
  letter-spacing: 0.2px;
  white-space: nowrap;
  user-select: none;
}

.button-download .button__icon,
.uiverse-download-btn .button__icon {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 44px;
  background-color: #4338ca;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
}

.button-download .button__icon svg,
.button-download .button__icon i,
.uiverse-download-btn .button__icon svg,
.uiverse-download-btn .button__icon i {
  width: 18px;
  height: 18px;
  font-size: 1.15rem;
  fill: #ffffff;
  color: #ffffff;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.button-download:hover,
.uiverse-download-btn:hover {
  background-color: #4338ca;
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
  transform: translateY(-1.5px);
}

.button-download:hover .button__text,
.uiverse-download-btn:hover .button__text {
  color: transparent;
}

.button-download:hover .button__icon,
.uiverse-download-btn:hover .button__icon {
  width: 100%;
  transform: translateX(0);
  border-left: none;
}

.button-download:hover .button__icon svg,
.button-download:hover .button__icon i,
.uiverse-download-btn:hover .button__icon svg,
.uiverse-download-btn:hover .button__icon i {
  transform: scale(1.2) translateY(1px);
}

.button-download:active,
.uiverse-download-btn:active {
  border: 1px solid #3730a3;
  transform: translateY(1px);
}

.button-download:active .button__icon,
.uiverse-download-btn:active .button__icon {
  background-color: #3730a3;
}

/* Color Variant: Emerald / PDF */
.button-download.btn-pdf,
.uiverse-download-btn.btn-pdf,
.button-download.btn-emerald,
.uiverse-download-btn.btn-emerald {
  border-color: #059669;
  background-color: #10b981;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.28);
}
.button-download.btn-pdf .button__icon,
.uiverse-download-btn.btn-pdf .button__icon,
.button-download.btn-emerald .button__icon,
.uiverse-download-btn.btn-emerald .button__icon {
  background-color: #059669;
}
.button-download.btn-pdf:hover,
.uiverse-download-btn.btn-pdf:hover,
.button-download.btn-emerald:hover,
.uiverse-download-btn.btn-emerald:hover {
  background-color: #059669;
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
}
.button-download.btn-pdf:active .button__icon,
.uiverse-download-btn.btn-pdf:active .button__icon,
.button-download.btn-emerald:active .button__icon,
.uiverse-download-btn.btn-emerald:active .button__icon {
  background-color: #047857;
}

/* Color Variant: Blue / Word */
.button-download.btn-word,
.uiverse-download-btn.btn-word,
.button-download.btn-blue,
.uiverse-download-btn.btn-blue {
  border-color: #1d4ed8;
  background-color: #2563eb;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
}
.button-download.btn-word .button__icon,
.uiverse-download-btn.btn-word .button__icon,
.button-download.btn-blue .button__icon,
.uiverse-download-btn.btn-blue .button__icon {
  background-color: #1d4ed8;
}
.button-download.btn-word:hover,
.uiverse-download-btn.btn-word:hover,
.button-download.btn-blue:hover,
.uiverse-download-btn.btn-blue:hover {
  background-color: #1d4ed8;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}
.button-download.btn-word:active .button__icon,
.uiverse-download-btn.btn-word:active .button__icon,
.button-download.btn-blue:active .button__icon,
.uiverse-download-btn.btn-blue:active .button__icon {
  background-color: #1e40af;
}

/* ═══════════════════════════════════════════════════════════════════════════
   ✨ EXAMS HOVER DROPDOWN MENU
   ═══════════════════════════════════════════════════════════════════════════ */

.exams-nav-dropdown {
    position: relative;
}

.exams-nav-dropdown .dropdown-toggle::after {
    display: none !important;
}

.exams-nav-dropdown .nav-dd-arrow {
    transition: transform 0.2s ease;
}

@media (min-width: 1200px) {
    .exams-nav-dropdown:hover .exams-dropdown-menu {
        display: block;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }
    
    .exams-nav-dropdown:hover .nav-dd-arrow {
        transform: rotate(180deg);
    }
    
    .exams-dropdown-menu {
        display: block;
        opacity: 0;
        visibility: hidden;
        transform: translateY(8px);
        transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
        pointer-events: none;
    }
}

.exams-dropdown-menu {
    min-width: 290px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 8px;
    box-shadow: 0 16px 36px -4px rgba(15, 23, 42, 0.14), 0 4px 12px rgba(0,0,0,0.04);
    margin-top: 6px;
}

.exam-dd-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 12px;
    border-radius: 12px;
    color: #1e293b;
    transition: all 0.15s ease;
    text-decoration: none;
}

.exam-dd-item:hover {
    background: #f8fafc;
    transform: translateX(3px);
}

.exam-dd-icon-box {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.exam-dd-custom-icon {
    background: #eef2ff;
    color: #6366f1;
}

.exam-dd-model-icon {
    background: #e0f2fe;
    color: #0284c7;
}

.exam-dd-streak-icon {
    background: #fef3c7;
    color: #d97706;
}

.exam-dd-text {
    display: flex;
    flex-direction: column;
}

.exam-dd-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.25;
}

.exam-dd-desc {
    font-size: 0.74rem;
    color: #64748b;
    line-height: 1.2;
}

.exam-dd-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 7px 12px;
    border-radius: 10px;
    font-size: 0.78rem;
    font-weight: 700;
    color: #6366f1;
    transition: background 0.15s ease;
}

.exam-dd-footer:hover {
    background: #eef2ff;
    color: #4f46e5;
}