/* ========================================================================
   GEO SOLUTIONS — COMPONENTS
   Reusable UI primitives — buttons, cards, links, system code labels.
   Loaded after base.css.
   ======================================================================== */

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

.btn {
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: var(--text-body-sm);
  border-radius: var(--radius-md);
  padding: 10px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  transition:
    background var(--duration-fast) var(--ease-default),
    border-color var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default);
  white-space: nowrap;
}

/* Size variants */
.btn--lg {
  padding: 14px 24px;
  font-size: var(--text-body-lg);
}

.btn--sm {
  padding: 8px 16px;
  font-size: var(--text-body-sm);
}

/* Primary — accent button (used for Book Discovery Call site-wide) */
.btn--primary {
  background: var(--color-accent);
  color: var(--color-accent-text);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn--primary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Secondary — outline button */
.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover {
  background: var(--color-bg-elevated);
  border-color: var(--color-text-secondary);
}

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

a.link-inline {
  color: var(--color-text-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--duration-fast) var(--ease-default);
}

a.link-inline:hover {
  text-decoration-color: var(--color-accent);
}

/* ===== ARROW LINK (with arrow indicator) ===== */

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-body-sm);
  color: var(--color-text-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-border-strong);
  text-underline-offset: 4px;
  transition: text-decoration-color var(--duration-fast) var(--ease-default);
}

.link-arrow:hover {
  text-decoration-color: var(--color-accent);
}

.link-arrow::after {
  content: "→";
  display: inline-block;
  transition: transform var(--duration-fast) var(--ease-default);
}

.link-arrow:hover::after {
  transform: translateX(2px);
}

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

.card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: border-color var(--duration-fast) var(--ease-default);
}

.card-interactive:hover {
  border-color: var(--color-border-strong);
}

/* ===== SYSTEM CODE LABEL (mono accent label for technical labels) ===== */

.system-code {
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
  font-weight: var(--weight-regular);
  text-transform: uppercase;
}

/* ===== METRIC CALLOUT ===== */

.metric-value {
  font-family: var(--font-display);
  font-size: var(--text-display-lg);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  line-height: 1;
}

.metric-value--accent {
  color: var(--color-accent);
}

.metric-label {
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-top: var(--space-2);
}

/* ===== INDUSTRY MARKER TAG ===== */

.marker-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.marker-tag--inline {
  margin-left: 8px;
  vertical-align: middle;
}

/* ===== EYEBROW (small label above titles, often with accent dot) ===== */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-accent);
  background: var(--color-accent-muted);
  border: 1px solid rgba(255, 0, 200, 0.25);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-8);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
}

/* ===== TAG (used in proof strip case study cards) ===== */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
}

.tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  display: inline-block;
}