/* =========================
   ROOT SYSTEM
========================= */

:root {

  /* COLORS */
  --bg-main: #0B0F14;
  --bg-elevated: #111821;

  --text-primary: #EAF1F7;
  --text-secondary: #9FB3C8;

  --accent-blue: #8FB1CE;
  --accent-green: #D8EFAA;
  --accent-gold: #F1DE67;
  --accent-red: #C54C60;

  --border-soft: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.18);

  /* TYPOGRAPHY */
  --font-main: 'Inter', sans-serif;

  --fs-h1: 44px;
  --fs-h2: 30px;
  --fs-h3: 20px;

  --fs-body: 15px;
  --fs-small: 13px;

  /* SPACING SCALE */
  --space-xs: 6px;
  --space-sm: 10px;
  --space-md: 18px;
  --space-lg: 28px;
  --space-xl: 48px;
  --space-xxl: 80px;

  /* RADIUS */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;

}

/* =========================
   RESET
========================= */

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

/* =========================
   BODY
========================= */

body {
  font-family: var(--font-main);
  background: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* =========================
   CANVAS FIELD
========================= */

#field {
  position: fixed;
  inset: 0;
  z-index: 0;
}

/* =========================
   APP LAYER
========================= */

#app {
  position: relative;
  z-index: 2;
}

/* =========================
   TYPOGRAPHY
========================= */

h1 {
  font-size: var(--fs-h1);
  font-weight: 500;
  letter-spacing: -0.5px;
}

h2 {
  font-size: var(--fs-h2);
  font-weight: 500;
}

h3 {
  font-size: var(--fs-h3);
  font-weight: 500;
}

p {
  font-size: var(--fs-body);
  color: var(--text-secondary);
}

.lead {
  font-size: 18px;
  color: var(--text-primary);
}

.sub {
  font-size: 14px;
  color: var(--text-secondary);
}

/* =========================
   LINKS
========================= */

a {
  color: var(--accent-blue);
  text-decoration: none;
}

/* =========================
   BUTTONS
========================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 10px 18px;

  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);

  background: transparent;
  color: var(--text-primary);

  cursor: pointer;
}

.btn.primary {
  background: var(--accent-blue);
  color: #0B0F14;
  border: none;
}

/* =========================
   CARDS
========================= */

.card {
  padding: var(--space-md);
  border-radius: var(--radius-md);

  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-soft);
}

/* =========================
   EXPAND TEXT
========================= */

.expand {
  color: var(--accent-blue);
  cursor: pointer;
  font-size: var(--fs-small);
}

.expand-content {
  margin-top: var(--space-sm);
  display: none;
}

.expand-content.open {
  display: block;
}

/* =========================
   COUNTER
========================= */

#counter {
  font-size: 28px;
  color: var(--accent-gold);
}

/* =========================
   FOOTER
========================= */

.footer p {
  color: var(--text-secondary);
}