@import url("reset.css");
@import url("variables.css");

/*
-----------------------------------------
CSS PROPERTIES & VALUES - QUICK REFERENCE
-----------------------------------------

CSS comments use /* and * / (without the space).

UNITS
px    = Pixels. Fixed CSS measurement.
%     = Percentage relative to another value,
        often the parent element.
em    = Relative to the element's font size
        (or parent's font size for font-size).
rem   = Relative to the root HTML font size.
vw    = 1% of the viewport width.
vh    = 1% of the viewport height.
ch    = Approximate width of the "0" character.

TYPOGRAPHY
font-family: Arial, sans-serif;
  Sets the typeface and fallback fonts.

font-size: 16px;
  Sets the size of the text.

font-weight: 400;
  Controls text weight.
  400 = Normal, 700 = Bold.
  Variable fonts may support values 100-900.

line-height: 1.5;
  Controls spacing between lines.
  1.5 means 1.5 times the font size.

letter-spacing: 2px;
  Controls spacing between characters.
  Negative values tighten spacing.

text-align: left;
  Aligns text: left, right, center, justify.

text-transform: uppercase;
  Changes appearance of text:
  uppercase, lowercase, capitalize, none.

COLOUR
color: #222222;
  Sets text colour.

background-color: #ffffff;
  Sets the background colour.

SPACING
margin: 20px;
  Space outside an element.

padding: 20px;
  Space inside an element.

margin-bottom: 20px;
  Adds space below an element.

WIDTH
width: 100%;
  Sets an element's width.

max-width: 800px;
  Limits how wide an element can become.

-----------------------------------------
*/


/*
03 — APPLYING VARIABLES / BASELINE BRIDGE
Numbering update: examples 01 and 02 have since been swapped at your request.
The original-number references below describe the files before that swap:
old 01 is now 02 (styled), and old 02 is now 01 (reset/reference).

The supplied example 02 has a reset and reference notes, but no typography
rules. Both originals are protected. Here we explicitly restore example 01's
basic typography and spacing, substituting variables for reusable values.
This necessary bridge is the only extra change in the colour lesson.
No grid, animation or experimental layout is introduced yet.
Try changing --font-size-h1 or --spacing-large in variables.css.
*/
body {
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  line-height: 1.6;
  padding: var(--spacing-large);
}
h1 {
  color: var(--color-primary);
  font-size: var(--font-size-h1);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: var(--spacing-medium);
}
h2 {
  color: var(--color-secondary);
  font-size: var(--font-size-h2);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--spacing-heading);
}
p {
  font-size: var(--font-size-body);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0px;
  max-width: 650px;
  margin-bottom: var(--spacing-medium);
}
/* A long word can wrap on a narrow screen without introducing fluid sizing. */
h1, h2, p { overflow-wrap: break-word; }

/*
WORKSHOP NAVIGATION — shared across the ten examples
These ordinary links open the neighbouring folder without JavaScript.
inline-block keeps the arrows beside the example number. Padding gives each
arrow a comfortable click area; currentColor follows this page's text colour.
The navigation stays in normal flow above the content, so it cannot cover it.
An outline makes keyboard focus visible. Unavailable directions are plain
spans, not links, so they cannot accidentally navigate or receive focus.
*/
.example-navigation {
  font-family: inherit;
  font-size: 14px;
  line-height: 1;
  margin-bottom: 20px;
}
.example-navigation a,
.example-navigation .unavailable {
  display: inline-block;
  padding: 12px;
  font-size: 20px;
  color: inherit;
  text-decoration: none;
}
.example-navigation a:hover { text-decoration: underline; }
.example-navigation a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}
.example-navigation .unavailable { opacity: .35; }
.example-navigation .example-number { font-size: 12px; }