:root {
  /* Colors */
  --color-bg: #ffffff;
  --color-surface: #f7f7f7;
  --color-elevated: #e7e7e7;
  --color-primary: #38bdf8;
  --color-primary-hover: #0ea5e9;
  --color-text: #353535;
  --color-text-secondary: #4b4b4b;
  --color-muted: #262626;

  /* Typography */
  --font-body: system-ui, -apple-system, sans-serif;
  --font-size-body: 1rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;

  /* Geometry */
  --width-pg: 1400px;
  --width-pg-sm: 1200px;
  --width-pg-curl: 780px;
  --width-sm: 2px;
  --width-md: 4px;
  --width-lg: 6px;
  --radius: 8px;
  --radius-line: 2px;

  /* Effects */
  --scale-hover: 1.02;
}

/* Light mode styles (default) */
h1 {
  color: var(--color-text);
  font-size: 2.2rem;
  line-height: 1.05;
  font-weight: bold;
  margin: 0;
  padding: 0;
}
h2 {
  color: var(--color-text);
  font-size: 3rem;
  line-height: 2.5rem;
  margin: 0;
  padding: 0;
}
h3 {
  color: var(--color-text-secondary);
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0;
  padding: 0;
}
h4 {
  color: var(--color-text);
  font-size: 2.2rem;
  line-height: 1;
  font-weight: bold;
  margin: 0;
  padding: var(--space-sm) 0;
}
h5 {
  color: var(--color-primary);
  font-size: 2.5rem;
  margin: 0;
  padding: var(--space-sm) 0;
}
h6 {
  color: var(--color-text-secondary);
  font-size: 1rem;
  letter-spacing: 0.15em;
  margin: 0;
  padding: 0;
}

body {
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  background-color: var(--color-bg);
  margin: 0;                /* remove default browser margin */
  padding: 0;               /* optional */
  overflow-x: hidden;       /* prevent horizontal scroll */
}

p {
  color: var(--color-text);        /* ensures consistent text color */
  font-size: var(--font-size-body);
  margin-bottom: var(--space-md);  /* spacing between paragraphs */
}
span {
  color: var(--color-text);        /* ensures consistent text color */
  font-size: 3rem;  
  padding: 1rem;
}
small {
  color: var(--color-text-secondary);        /* ensures consistent text color */
  font-size: 0.8rem;
  margin-bottom: var(--space-md);  /* spacing between paragraphs */
}
strong {
  color: var(--color-text);        /* ensures consistent text color */
  font-size: var(--font-size-body);
  font-weight: bold;
  margin-bottom: var(--space-md);  /* spacing between paragraphs */
}
em {
  color: var(--color-text);        /* ensures consistent text color */
  font-size: var(--font-size-body);
  margin-bottom: var(--space-md);  /* spacing between paragraphs */
}

.dark-theme-text,
.dark-theme-text h2,
.dark-theme-text h4,
.dark-theme-text h3 {
  color: #e9e9e9 !important;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

/* Dark mode styles */
@media (prefers-color-scheme: dark) {
  :root {
  /* Colors */
  --color-bg: #262626;
  --color-surface: #1e1e1e;
  --color-elevated: #202020;
  --color-primary: #007bff;
  --color-primary-hover: #0056b3;
  --color-text: #e9e9e9;
  --color-text-secondary: #969696;
  --color-muted: #94a3b8;
  }
  
  h1 {
    color: var(--color-text);
  }
  h2 {
    color: var(--color-text);
  }
  h3 {
    color: var(--color-text-secondary);
  }
  h4 {
    color: var(--color-text);
  }
  h5 {
    color: var(--color-primary);
  }
  h6 {
    color: var(--color-text-secondary);
  }

  body {
    color: var(--color-text);
    background-color: var(--color-bg);
  }
  p {
    color: var(--color-text);        /* ensures consistent text color */
  }
  span {
    color: var(--color-text);        /* ensures consistent text color */
  }
  small {
    color: var(--color-text-secondary);        /* ensures consistent text color */
  }
  strong {
    color: var(--color-text);        /* ensures consistent text color */
  }
  em {
    color: var(--color-text);        /* ensures consistent text color */
  }
}