:root {
  --bg: #000000;
  --bg-card: rgba(10, 10, 15, 0.95);
  --accent: #00ffff;
  --accent-secondary: #9900ff;
  --text-main: #e8f9ff;
  --text-subtle: #c0d3dd;
  --meta: #5d7f99;
}

/* Page background with a subtle animated glow */
html, body {
  height: 100%;
}

/* Use grid to easily center the card and avoid page scrolling on wide screens. */
body {
  margin: 0;
  padding: 0; /* moved padding to small-screen media query */
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 10% 20%, rgba(0,255,255,0.03), transparent),
              radial-gradient(800px 400px at 90% 80%, rgba(153,0,255,0.03), transparent),
              linear-gradient(180deg, #020204 0%, #07060a 100%);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  color: var(--text-main);
  display: grid;
  place-items: center;
  overflow: hidden; /* default to hide page scrollbar; mobile media query will allow scroll */
}

.card {
  background: linear-gradient(180deg, rgba(12,12,16,0.96), rgba(6,6,10,0.96));
  padding: 38px 34px 30px;
  border-radius: 16px;
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.03);
  backdrop-filter: blur(6px) saturate(120%);
  max-width: 840px; /* allow wider layout on large screens */
  width: min(92%, 820px);
  text-align: center;
  position: relative;
  /* Keep the page itself non-scrollable by using internal scrolling on the card when needed */
  max-height: calc(100vh - 120px);
  overflow: auto;
}

/* Tiles (app list) */
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.app-tile {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: 10px;
  padding: 12px;
  border: 1px solid rgba(255,255,255,0.03);
  cursor: pointer;
  color: var(--text-main);
  transition: transform 160ms ease, box-shadow 160ms;
  text-align: left;
}

.app-tile img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}

.app-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.45);
}

.tile-info { flex: 1; }
.tile-title { font-weight: 700; font-size: 15px; }
.tile-sub { font-size: 12px; color: var(--text-subtle); margin-top: 2px; }
.tile-action { font-weight: 600; color: var(--accent-secondary); }

/* Modal styles */
.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0,0,0,0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
  z-index: 60;
}

.modal.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-panel {
  background: linear-gradient(180deg, #0a0a0e, #07070a);
  border-radius: 12px;
  width: min(92%, 720px);
  max-height: 88vh;
  overflow: auto;
  padding: 20px 20px 24px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.03);
  position: relative;
}

.modal-close {
  position: absolute;
  right: 12px;
  top: 10px;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 18px;
  cursor: pointer;
}

.modal-body h2 { margin-top: 6px; margin-bottom: 8px; color: var(--accent); }
.modal-body .btn { margin-top: 10px; }
.modal-body .qr { margin-top: 14px; }
.modal-body .qr img { width: 180px; }

.highlight { color: #00bfff; font-weight: 600; }

.logo {
  width: 76px;
  margin-bottom: 16px;
  filter: drop-shadow(0 6px 18px rgba(0,255,255,0.06));
}

h1 {
  margin: 0 0 8px 0;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: var(--accent);
  text-shadow: 0 4px 28px rgba(0,255,255,0.04);
}

p {
  font-size: 14.5px;
  color: var(--text-subtle);
  margin: 6px 0 20px;
  line-height: 1.56;
}

.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
  padding: 12px 0;
  width: 100%;
  color: #000;
  font-weight: 700;
  font-size: 15.5px;
  border-radius: 10px;
  text-decoration: none;
  box-shadow: 0 6px 22px rgba(0, 255, 255, 0.08), 0 2px 6px rgba(153,0,255,0.06);
  transition: transform 180ms cubic-bezier(.2,.9,.2,1), box-shadow 180ms;
  border: none;
  margin-bottom: 10px;
  letter-spacing: 0.2px;
  text-align: center;
}

.btn:hover,
.btn:focus {
  box-shadow: 0 12px 40px rgba(0, 255, 255, 0.12), 0 8px 20px rgba(153,0,255,0.08);
  transform: translateY(-3px);
}

.btn:focus-visible {
  outline: 3px solid rgba(0,255,255,0.09);
  outline-offset: 2px;
}

.meta {
  margin-top: 10px;
  font-size: 13px;
  color: #b3eaff;
  letter-spacing: 0.1px;
}

.qr {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.qr img {
  width: 112px;
  border-radius: 10px;
  border: 1.5px solid #15181c;
  background: #fff;
  box-shadow: 0 6px 22px rgba(0,255,255,0.04);
  transition: box-shadow 200ms ease-in-out, transform 200ms;
}

.qr img:hover {
  box-shadow: 0 12px 36px rgba(0,255,255,0.08);
  transform: translateY(-4px);
}

.qr-desc {
  font-size: 11px;
  color: #8fe3ff;
  margin-top: 2px;
  letter-spacing: 0.1px;
}

footer {
  margin-top: 26px;
  font-size: 11px;
  color: var(--meta);
  letter-spacing: 0.2px;
  opacity: 0.9;
}

.card hr {
  margin: 28px 0 18px;
  border: none;
  border-top: 1.2px solid #22262c;
}

@media (max-width: 480px) {
  .card {
    padding: 26px 6vw 20px;
    max-width: 96vw;
  }

  .qr img {
    width: 90px;
  }
}

/* Allow normal page scrolling and comfortable padding on phones/smaller viewports */
@media (max-width: 900px) {
  body {
    overflow: auto; /* allow the page to scroll on small screens */
    padding: 28px; /* restore comfortable breathing room on mobile */
  }

  .card {
    max-height: none;
    overflow: visible;
    width: 100%;
    max-width: 96vw;
    border-radius: 12px;
  }
}

/* small, subtle animation for ambient glow */
@keyframes ambientPulse {
  0% { filter: hue-rotate(0deg) brightness(1); }
  50% { filter: hue-rotate(10deg) brightness(1.02); }
  100% { filter: hue-rotate(0deg) brightness(1); }
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(400px 200px at 10% 10%, rgba(0,255,255,0.02), transparent),
              radial-gradient(300px 150px at 90% 90%, rgba(153,0,255,0.02), transparent);
  mix-blend-mode: screen;
  animation: ambientPulse 9s ease-in-out infinite;
}