:root {
  --btn-radius: 10px;
  --btn-height: 34px;
  --btn-height-sm: 30px;
  --btn-padding-x: 11px;
  --btn-font-size: 12px;
  --btn-font-weight: 600;
  --btn-border: #b9cec1;
  --btn-bg: #f4faf7;
  --btn-text: #24513b;
  --btn-hover-border: #a7c0b1;
  --btn-hover-bg: #eaf6ef;
  --btn-focus-ring: rgba(55, 129, 87, 0.28);
  --btn-primary-border: #7fb798;
  --btn-primary-bg: #d9f0e2;
  --btn-primary-text: #155f38;
  --btn-primary-hover-bg: #cee9d9;
  --btn-ghost-border: #bfd7c8;
  --btn-ghost-bg: #f5faf7;
  --btn-ghost-text: #1c6540;
  --btn-ghost-hover-bg: #ebf7f0;
  --btn-danger-border: #ebc4be;
  --btn-danger-bg: #fff0ef;
  --btn-danger-text: #9f3232;
  --btn-danger-hover-bg: #ffe5e3;
}

.btn {
  appearance: none;
  border: 1px solid var(--btn-border);
  border-radius: var(--btn-radius);
  min-height: var(--btn-height);
  padding: 0 var(--btn-padding-x);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: var(--btn-bg);
  color: var(--btn-text);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease, transform 0.12s ease;
}

.btn.btn-compact {
  min-height: var(--btn-height-sm);
  height: var(--btn-height-sm);
  padding: 0 10px;
  font-size: 11px;
}

.btn.icon-only:not(.icon-with-text) {
  width: var(--btn-height-sm);
  min-width: var(--btn-height-sm);
  padding: 0;
  gap: 0;
}

.btn.icon-only:not(.icon-with-text) svg {
  width: 14px;
  height: 14px;
  display: block;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn.btn-with-icon {
  gap: 6px;
}

.btn.btn-with-icon svg {
  width: 14px;
  height: 14px;
  display: block;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn:hover {
  border-color: var(--btn-hover-border);
  background: var(--btn-hover-bg);
  transform: translateY(-1px);
}

.btn:focus-visible {
  outline: 3px solid var(--btn-focus-ring);
  outline-offset: 1px;
}

.btn:disabled {
  opacity: 0.58;
  cursor: not-allowed;
  transform: none;
}

.btn.btn-primary {
  border-color: var(--btn-primary-border);
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}

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

.btn.btn-ghost {
  border-color: var(--btn-ghost-border);
  background: var(--btn-ghost-bg);
  color: var(--btn-ghost-text);
}

.btn.btn-ghost:hover {
  background: var(--btn-ghost-hover-bg);
}

.btn.btn-danger {
  border-color: var(--btn-danger-border);
  background: var(--btn-danger-bg);
  color: var(--btn-danger-text);
}

.btn.btn-danger:hover {
  background: var(--btn-danger-hover-bg);
}