:root {
  --matte-black: #000000;
  --dark-gray: #060606;
  --dark-gray-soft: #0d0d0d;
  --panel-dark: #101010;
  --pearly-white: #e5e5e5;
  --muted-text: #b3b3b3;
  --accent-color: #00ff99;
  --accent-soft: rgba(0, 255, 153, 0.16);
  --accent-border: rgba(0, 255, 153, 0.35);
  --accent-glow: 0 0 18px rgba(0, 255, 153, 0.35);
  --bar-h: 70px;
  --bs-body-font-family: "Montserrat", sans-serif;
}

html,
body {
  height: 100%;
  font-family: "Montserrat", sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding-top: var(--bar-h);
  background: radial-gradient(
      circle at 0% 0%,
      rgba(0, 255, 153, 0.12) 0,
      transparent 50%
    ),
    radial-gradient(
      circle at 100% 100%,
      rgba(0, 255, 153, 0.14) 0,
      transparent 55%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(0, 255, 153, 0.06) 0,
      transparent 60%
    ),
    linear-gradient(180deg, #020806 0%, #000000 45%, #020806 100%);
  background-color: #000000;
  background-attachment: fixed;
  color: var(--pearly-white);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    circle at 50% -10%,
    rgba(0, 255, 153, 0.16) 0,
    transparent 55%
  );
  mix-blend-mode: screen;
  opacity: 0.7;
  z-index: -1;
}

main {
  flex: 1;
  padding: 2rem 0 4rem;
}

@media (min-width: 768px) {
  main {
    padding-bottom: 3rem;
  }
}

a {
  color: var(--pearly-white);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease, text-shadow 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--accent-color);
  text-shadow: 0 0 10px rgba(0, 255, 153, 0.6);
  outline: none;
}

nav.navbar {
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.98) 0%,
    rgba(4, 16, 10, 0.97) 55%,
    rgba(0, 0, 0, 0.98) 100%
  ) !important;
  border-bottom: 1px solid rgba(0, 255, 153, 0.6);
  box-shadow: 0 4px 18px rgba(0, 255, 153, 0.22);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-weight: 900;
  color: var(--accent-color) !important;
  text-shadow: 0 0 12px rgba(0, 255, 153, 0.8);
  letter-spacing: 0.08em;
}

.navbar-dark .navbar-toggler {
  border: 1px solid rgba(0, 255, 153, 0.4) !important;
  border-radius: 0.5rem;
  background: transparent;
}

.navbar-dark .navbar-toggler-icon {
  background-image: none;
  background-color: var(--accent-color);
  mask-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-dark .navbar-toggler:focus,
.navbar-dark .navbar-toggler:active {
  border: 1px solid rgba(0, 255, 153, 0.45) !important;
  box-shadow: 0 0 10px rgba(0, 255, 153, 0.5);
  border-radius: 0.5rem;
}

.nav-link {
  color: #e5e5e5 !important;
  transition: color 0.25s ease, text-shadow 0.25s ease, transform 0.18s ease,
    opacity 0.2s ease;
  opacity: 0.9;
}

.nav-link:hover {
  color: var(--accent-color) !important;
  text-shadow: 0 0 12px rgba(0, 255, 153, 0.7);
  opacity: 1;
  transform: translateY(-1px);
}

.nav-item .nav-link.active {
  color: var(--accent-color) !important;
  text-shadow: 0 0 10px rgba(0, 255, 153, 0.9);
  opacity: 1;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
}

.h1-style {
  margin-bottom: 20px;
}

.custom-card {
  border: 1px solid var(--accent-border);
  background: radial-gradient(
      circle at 0 0,
      rgba(0, 255, 153, 0.12) 0,
      transparent 55%
    ),
    var(--panel-dark);
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.85);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease,
    background 0.2s ease;
  color: var(--pearly-white);
  padding: 1.7rem;
  text-align: center;
}

.custom-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 255, 153, 0.6);
  box-shadow: 0 0 24px rgba(0, 255, 153, 0.28);
}

.icon-container {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.icon-container i {
  color: var(--accent-color);
  text-shadow: 0 0 12px rgba(0, 255, 153, 0.7);
}

.btn-style {
  border: 1px solid var(--accent-border);
  background-color: var(--panel-dark);
  color: var(--pearly-white);
  border-radius: 999px;
  padding: 0.7rem 2.3rem;
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
  width: 40%;
  display: block;
  margin: 0 auto;
  min-width: 160px;
}

.btn-style:hover,
.btn-style:focus-visible {
  transform: translateY(-2px);
  background: rgba(0, 255, 153, 0.18);
  border-color: rgba(0, 255, 153, 0.7);
  color: var(--pearly-white);
  box-shadow: 0 0 18px rgba(0, 255, 153, 0.5);
}

.text-muted {
  color: var(--muted-text) !important;
}

footer {
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.98) 0%,
    rgba(0, 8, 4, 0.98) 60%,
    rgba(0, 0, 0, 0.98) 100%
  );
  border-top: 1px solid rgba(0, 255, 153, 0.4);
}

.footer {
  font-size: 12px;
  color: var(--accent-color);
}

footer .footer p,
footer p {
  color: var(--pearly-white);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  opacity: 0.85;
  margin: 0;
  transition: opacity 0.25s ease, color 0.25s ease, text-shadow 0.25s ease;
}

footer p:hover {
  color: var(--accent-color);
  opacity: 1;
  text-shadow: 0 0 8px rgba(0, 255, 153, 0.55);
}

@media (min-width: 992px) {
  body {
    padding-top: var(--bar-h);
  }
}

@media (max-width: 576px) {
  .icon-container {
    font-size: 2.5rem;
  }

  .btn-style {
    width: 100%;
  }

  .row.g-4 {
    --bs-gutter-y: 1.25rem;
  }

  .navbar .container {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  main .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}