/* iOS-style glassmorphism theme + ambient background */
:root {
  --glass-bg: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.35);
  --glass-shadow: 0 18px 60px rgba(10, 20, 40, 0.22);
  --text-strong: #0b1220;
  --text-soft: rgba(11, 18, 32, 0.7);
  --accent-a: #2bb4ff;
  --accent-b: #7ae3ff;
  --accent-c: #fff1b8;
}

html,
body {
  height: 100%;
}

body {
  background: radial-gradient(1200px 600px at 10% 0%, #f6f8ff 0%, #eef3ff 45%, #f9fbff 100%);
  color: var(--text-strong);
}

.glass-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

#glass-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.glass-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.1'/></svg>");
  mix-blend-mode: soft-light;
}

.wrapper,
.content-page,
.content {
  position: relative;
  z-index: 1;
}

.top-header,
.navbar,
.card,
.modal-content {
  background: var(--glass-bg);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.top-header {
  border-radius: 16px;
  margin: 20px auto 0;
  padding: 6px 0;
}

.navbar .topnav-logo img {
  filter: drop-shadow(0 6px 14px rgba(24, 40, 80, 0.25));
}

.nav-title {
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--text-strong);
}

.btn-top-nav {
  border-radius: 999px;
  padding: 8px 16px;
  margin-right: 8px;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 10px 20px rgba(25, 40, 80, 0.12);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-top-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(25, 40, 80, 0.18);
}

.search-box,
.search-form {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 14px;
}

.card {
  border-radius: 18px;
}

@media (max-width: 768px) {
  .top-header {
    margin: 10px 12px 0;
    border-radius: 14px;
  }

  .btn-top-nav {
    margin-bottom: 8px;
  }
}