/* ==============================================================
   BOL Growth Engine — Base styles
   ============================================================== */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  margin: 0 0 var(--space-3) 0;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-3xl); font-weight: 800; }
h2 { font-size: var(--text-2xl); font-weight: 700; }
h3 { font-size: var(--text-xl); font-weight: 700; }

p { margin: 0 0 var(--space-3) 0; color: var(--color-text-muted); }

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink-soft);
  margin-bottom: var(--space-2);
}

input, select, textarea, button {
  font-family: inherit;
  font-size: var(--text-base);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lt);
}

input::placeholder { color: var(--color-text-faint); }

button {
  cursor: pointer;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), background var(--duration) var(--ease);
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}