/* =========================================================
   Components
   ========================================================= */

/* --- Buttons --- */
.btn {
  --btn-bg: var(--brand-600);
  --btn-fg: var(--ink-0);
  --btn-border: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: var(--radius-full);
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-border);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  line-height: 1;
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  --btn-bg: var(--brand-600);
  --btn-fg: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 10px 30px rgba(37, 99, 235, 0.35);
}

.btn--primary:hover {
  --btn-bg: var(--brand-500);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text-primary);
  --btn-border: var(--border-strong);
}

.btn--ghost:hover {
  --btn-bg: rgba(255, 255, 255, 0.04);
  --btn-border: var(--border-brand);
}

.btn--link {
  --btn-bg: transparent;
  --btn-fg: var(--text-primary);
  padding: 10px 0;
  border-radius: 0;
}

.btn--link::after {
  content: '';
  width: 22px;
  height: 1px;
  background: currentColor;
  transition: width var(--dur-base) var(--ease-out);
}

.btn--link:hover {
  box-shadow: none;
  transform: none;
}

.btn--link:hover::after {
  width: 36px;
}

.btn .arrow {
  display: inline-block;
  transition: transform var(--dur-base) var(--ease-out);
}

.btn:hover .arrow {
  transform: translate(4px, -4px);
}

/* --- Tag / Pill --- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag--brand {
  color: var(--brand-300);
  border-color: var(--border-brand);
  background: rgba(59, 130, 246, 0.08);
}

/* --- Cards --- */
.card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    border-color var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out),
    background-color var(--dur-base) var(--ease-out);
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

/* --- Divider --- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  border: none;
}

/* --- Link underline --- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--brand-300);
  transition: color var(--dur-fast) var(--ease-out);
}

.link-arrow svg {
  transition: transform var(--dur-base) var(--ease-out);
}

.link-arrow:hover {
  color: var(--brand-200);
}

.link-arrow:hover svg {
  transform: translate(3px, -3px);
}

.link-arrow--muted {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  cursor: default;
  align-self: start;
}
.link-arrow--muted:hover {
  color: var(--text-muted);
}