@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&family=Space+Grotesk:wght@500;700&display=swap');

:root {
  /* color palettes */
  --pro-bg: #f3f5f8;
  --pro-text: #121826;
  --pro-muted: #5d6472;
  --pro-card: #ffffff;
  --pro-border: #d9dee7;
  --pro-accent: #1f4fff;

  --chill-text: #00ff00; /* neon green text */
  --chill-accent: #0ff; /* cyan accent */
  --chill-accent-secondary: #0f0; /* bright green */
  --chill-highlight: #ff00ff; /* magenta highlight */

  /* spacing scale */
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;

  /* typography */
  --base-font: 'Inter', sans-serif;
}

/* utility container */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

body {
  min-height: 100vh;
  font-family: var(--base-font);
  line-height: 1.6;
  color: inherit;
}

/* basic link reset */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}
a:hover {
  color: var(--pro-accent);
}

/* responsive navigation toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  color: inherit;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  transition: transform 0.3s;
  position: relative;
}
.nav-toggle span::before {
  content: '';
  transform: translateY(-6px);
}
.nav-toggle span::after {
  content: '';
  transform: translateY(6px);
}
.nav-toggle.active span {
  background: transparent;
}
.nav-toggle.active span::before {
  transform: rotate(45deg);
}
.nav-toggle.active span::after {
  transform: rotate(-45deg);
}

/* logo hover effects based on mode */
.logo {
  transition: transform 0.3s, color 0.3s, text-shadow 0.3s;
}
body[data-mode="chill"] .logo:hover {
  color: var(--chill-accent-secondary);
  text-shadow: 0 0 8px var(--chill-accent-secondary), 0 0 16px var(--chill-accent);
  transform: scale(1.08);
}
body[data-mode="professional"] .logo:hover {
  color: var(--pro-accent);
  transform: scale(1.03);
}

/* adjust toggle color hover for chill mode */
body[data-mode="chill"] .nav-toggle:hover span,
body[data-mode="chill"] .nav-toggle.active span {
  background: var(--chill-accent);
}
body[data-mode="professional"] .nav-toggle:hover span,
body[data-mode="professional"] .nav-toggle.active span {
  background: var(--pro-accent);
}
/* hide links on small screens */
.nav-links,
.chill-links {
  display: flex;
  gap: var(--spacing-sm);
}
@media (max-width: 760px) {
  .nav-toggle {
    display: block;
  }
  .nav-links,
  .chill-links {
    display: none;
    flex-direction: column;
    width: 100%;
    margin-top: var(--spacing-sm);
  }
  .nav-links.open,
  .chill-links.open {
    display: flex;
  }

  /* stack layers and ensure full width cards */
  .layer {
    flex-direction: column;
    align-items: center;
  }
  .chill-card,
  .pro-card {
    width: 90%;
    max-width: 600px;
  }
}

.site-footer {
  padding: 28px 20px;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.75;
}