:root {
  color-scheme: dark;
  --navy: #0b1220;
  --ice: #9ad9ff;
  --glow: #4cc9f0;
  --mint: #52f0c0;
  --snow: #f5f7ff;
  --steel: #182238;
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--navy);
  color: var(--snow);
}

.page-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.ambient-orb {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 999px;
  filter: blur(0px);
  opacity: 0.55;
  pointer-events: none;
}

.orb-one {
  top: -200px;
  right: -120px;
  background: radial-gradient(circle at 30% 30%, rgba(82, 240, 192, 0.55), rgba(82, 240, 192, 0) 65%);
}

.orb-two {
  bottom: -240px;
  left: -140px;
  background: radial-gradient(circle at 30% 30%, rgba(76, 201, 240, 0.45), rgba(76, 201, 240, 0) 65%);
}

.grid-overlay {
  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: 40px 40px;
  opacity: 0.35;
  pointer-events: none;
}

.glass-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 20px 60px rgba(6, 12, 26, 0.55);
  backdrop-filter: blur(12px);
}

.section-label {
  letter-spacing: 0.32em;
}

.gradient-text {
  background: linear-gradient(120deg, #9ad9ff 0%, #52f0c0 55%, #f5f7ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.divider-line {
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(154, 217, 255, 0.6), rgba(255, 255, 255, 0));
}

.button-glow {
  box-shadow: 0 10px 30px rgba(82, 240, 192, 0.35);
}

.image-frame {
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: linear-gradient(135deg, rgba(24, 34, 56, 0.9), rgba(8, 16, 32, 0.85));
}

.scroll-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid rgba(200, 230, 255, 0.4);
  background: rgba(12, 18, 32, 0.85);
  color: var(--snow);
  font-size: 20px;
  font-weight: 600;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(6, 12, 26, 0.5);
  transition: transform 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
  z-index: 40;
}

.scroll-top:hover {
  transform: translateY(-3px);
  border-color: rgba(82, 240, 192, 0.6);
}

.scroll-top.show {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top.hidden {
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 768px) {
  .ambient-orb {
    width: 360px;
    height: 360px;
  }
}