:root {
  color-scheme: dark light;
  --viewport-width: 100vw;
  --font-sans: "Inter", "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --color-bg: #050505;
  --color-bg-elevated: rgba(18, 21, 30, 0.72);
  --color-surface: rgba(32, 40, 56, 0.64);
  --color-primary: #6c5ce7;
  --color-primary-glow: #A29BFE;
  --color-accent: #00e5ff;
  --color-text: #f5f7ff;
  --color-muted: rgba(245, 247, 255, 0.64);
  --border-radius-lg: 28px;
  --border-radius-md: 18px;
  --border-radius-sm: 10px;
  --shadow-soft: 0 24px 48px rgba(0, 0, 0, 0.32);
  --blur-heavy: blur(24px);
  --transition-snappy: 220ms cubic-bezier(0.5, 0.15, 0.3, 1.15);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
  background: radial-gradient(circle at 20% 20%, rgba(0, 229, 255, 0.08), transparent 55%),
              radial-gradient(circle at 80% 0%, rgba(108, 92, 231, 0.18), transparent 60%),
              #020307;
}

body {
  font-family: var(--font-sans);
  font-size: 1.6rem;
  color: var(--color-text);
  min-height: 100vh;
  background: transparent;
  backdrop-filter: var(--blur-heavy);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-snappy), text-shadow var(--transition-snappy);
}

a:hover {
  color: var(--color-accent);
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.8);
}

button {
  font-family: inherit;
  font-size: 1.5rem;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: transform var(--transition-snappy), box-shadow var(--transition-snappy), background var(--transition-snappy);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.container {
  width: min(1200px, calc(100% - 4rem));
  margin: 0 auto;
}

.glass-panel {
  position: relative;
  background: var(--color-bg-elevated);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  backdrop-filter: var(--blur-heavy);
  box-shadow: var(--shadow-soft);
}

@media (max-width: 768px) {
  :root {
    font-size: 56%;
  }
}