/* Shared button system: geometry is separate from color and context. */
:root {
  --button-accent-bg: var(--accent);
  --button-accent-hover: #155bc8;
  --button-first-bg: #5cb85c;
  --button-first-hover: #4cae4c;
  --button-second-bg: #e3e7ee;
  --button-second-hover: #d5dbe5;
}

.button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  max-width: 100%;
  padding: 7px 14px;
  box-sizing: border-box;
  border: 1px solid transparent;
  border-radius: 5px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 20px;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.btn,
.button-accent,
.btn-accent,
.button.accent,
.btn.accent {
  border-color: var(--button-accent-bg);
  background: var(--button-accent-bg);
  color: #fff;
}

.btn:hover,
.button-accent:hover,
.btn-accent:hover,
.button.accent:hover,
.btn.accent:hover {
  border-color: var(--button-accent-hover);
  background: var(--button-accent-hover);
  color: #fff;
}

.button-first,
.btn-first,
.button.first,
.btn.first {
  border-color: var(--button-first-bg);
  background: var(--button-first-bg);
  color: #fff;
}

.button-first:hover,
.btn-first:hover,
.button.first:hover,
.btn.first:hover {
  border-color: var(--button-first-hover);
  background: var(--button-first-hover);
  color: #fff;
}

.button-second,
.btn-second,
.button.second,
.btn.second,
.btn.secondary {
  border-color: var(--button-second-bg);
  background: var(--button-second-bg);
  color: var(--text);
}

.button-second:hover,
.btn-second:hover,
.button.second:hover,
.btn.second:hover,
.btn.secondary:hover {
  border-color: var(--button-second-hover);
  background: var(--button-second-hover);
  color: var(--text);
}

.button-nav {
  border-color: transparent;
  background: transparent;
  color: var(--text);
}

.button-nav:hover {
  background: #f0f3f8;
  color: var(--text);
}

.button-nav.active {
  border-color: var(--muted);
  background: var(--muted);
  color: #fff;
}

.button-sm,
.btn.small {
  min-height: 30px;
  padding: 4px 10px;
  font-size: 12px;
  line-height: 20px;
}

.button-icon,
.btn-icon {
  gap: 6px;
}

.button-icon img,
.btn-icon img {
  display: block;
  width: 16px;
  height: 16px;
}

.button:disabled,
.btn:disabled,
.button[aria-disabled="true"],
.btn[aria-disabled="true"] {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn-icon.is-loading img {
  animation: spin 0.9s linear infinite;
  opacity: 0.8;
}