/* ==========================================================================
   buttons.css
   ========================================================================== */
/* ==========================================================================
   Button System — Error variants for all types
   Uses semantic color tokens from variables.css

   STATE MODEL (5 states):
   1. Default
   2. Hover      — :hover / [data-hover]
   3. Focus      — :focus-visible / [data-focus]   (ring only, no bg change)
   4. Active     — :active / [data-active]          (solid pressed state)
   5. Disabled   — :disabled / [disabled]

   NOTE: Any --color-* token below marked "(new)" is not yet defined in
   variables.css — add it there with the real value. Everything else
   reuses tokens that already existed in this file.
   ========================================================================== */

/* Base button */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-base);
  font-weight: var(--font-weight-normal);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
  box-shadow: var(--shadow-sm);
  color: var(--color-brand-on-primary);
  height: fit-content !important;
}

/* Size: Default */
.btn {
  font-size: 14px;
  line-height: 20px;
  padding: 8px 16px;
  height: 36px;

}

.btn:focus { 
  outline: none;
}

.btn .ti {
  --icon-size: 16px;
}

.btn--rounded {
  border-radius: 9999px;
}

.btn .btn__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Size: Small */
.btn--sm {
  font-size: 12px;
  line-height: 16px;
  padding: 6px 12px;
  gap: 6px;
  height: 28px;
  border-radius: 8px;
}

.btn--sm .btn__icon {
  width: 14px;
  height: 14px;
}

.btn--sm .ti {
  --icon-size: 14px;
}

/* Size: Medium */
.btn--md {
  font-size: 14px;
  line-height: 20px;
  padding: 10px 18px;
  height: 40px;
  border-radius: 8px;
}

.btn--md .btn__icon {
  width: 18px;
  height: 18px;
}

.btn--md .ti {
  --icon-size: 18px;
}

/* Size: Large */
.btn--lg {
  font-size: 16px;
  line-height: 24px;
  padding: 12px 20px;
  height: 48px;
}

.btn--lg .btn__icon {
  width: 20px;
  height: 20px;
}

.btn--lg .ti {
  --icon-size: 20px;
}

/* Icon-only sizing */
.btn--icon-only {
  padding: 8px;
  width: 36px;
}

.btn--sm.btn--icon-only {
  padding: 6px;
  width: 28px;
}

.btn--md.btn--icon-only {
  padding: 10px;
  width: 40px;
}

.btn--lg.btn--icon-only {
  padding: 14px;
  width: 48px;
}

.btn--icon-only .btn__icon {
  width: 18px;
  height: 18px;
}

.btn--sm.btn--icon-only .btn__icon {
  width: 16px;
  height: 16px;
}

.btn--md.btn--icon-only .btn__icon {
  width: 20px;
  height: 20px;
}

.btn--lg.btn--icon-only .btn__icon {
  width: 20px;
  height: 20px;
}

/* Dot */
.btn__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  flex-shrink: 0;
}

.btn--sm.btn--dot {
  gap: 7px;
}

.btn--dot {
  gap: 9px;
}

/* ===== PRIMARY ===== */
.btn--primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-label);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover,
.btn--primary[data-hover] {
  background-color: var(--btn-primary-bg-hover);
}

.btn--primary:focus-visible,
.btn--primary[data-focus] {
  background-color: var(--btn-primary-bg);
  /* box-shadow: 0px 0px 0px 4px var(--color-peggy-blue-500), 0px 0px 0px 2px var(--color-surface-default); */
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);

}

.btn--primary:active,
.btn--primary[data-active] {
  background-color: var(--btn-primary-bg-active);
  box-shadow: var(--shadow-sm);
}

.btn--primary:disabled,
.btn--primary[disabled] {
  background-color: var(--btn-primary-bg-disabled);
  color: var(--btn-primary-label-disabled);
  cursor: not-allowed;
  box-shadow: var(--shadow-sm);
}

/* ===== PRIMARY ERROR (Critical) ===== */
.btn--primary.btn--error {
  background-color: var(--color-critical-action);
  color: var(--color-brand-on-primary);
}

.btn--primary.btn--error:hover,
.btn--primary.btn--error[data-hover] {
  background-color: var(--color-critical-action-hover);
}

.btn--primary.btn--error:focus-visible,
.btn--primary.btn--error[data-focus] {
  background-color: var(--color-critical-action);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--color-critical-400), var(--shadow-sm);
}

.btn--primary.btn--error:disabled,
.btn--primary.btn--error[disabled] {
  background-color: var(--color-critical-bg);
  color: var(--color-brand-on-primary);
  cursor: not-allowed;
}

/* ===== SECONDARY COLOUR ===== */
.btn--secondary-color {
  background-color: var(--btn-secondary-color-bg);
  color: var(--btn-secondary-color-label);
  border: none;
}

.btn--secondary-color:hover,
.btn--secondary-color[data-hover] {
  background-color: var(--btn-secondary-color-bg-hover);
}

.btn--secondary-color:focus-visible,
.btn--secondary-color[data-focus] {
  background-color: var(--btn-secondary-color-bg-hover);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);
}

.btn--secondary-color:active,
.btn--secondary-color[data-active] {
  background-color: var(--btn-secondary-color-bg-active);
  box-shadow: var(--shadow-sm);
}

.btn--secondary-color:disabled,
.btn--secondary-color[disabled] {
  background-color: var(--btn-secondary-color-bg-disabled);
  color: var(--btn-secondary-color-label-disabled);
  border-color: transparent;
  cursor: not-allowed;
}

/* ===== SECONDARY ERROR (Critical) ===== */
.btn--secondary-color.btn--error {
  background-color: var(--color-critical-bg-subtle);
  color: var(--color-critical-action-hover);
}

.btn--secondary-color.btn--error:hover,
.btn--secondary-color.btn--error[data-hover] {
  background-color: var(--color-critical-bg);
  color: var(--color-critical-action-hover);
}

.btn--secondary-color.btn--error:focus-visible,
.btn--secondary-color.btn--error[data-focus] {
  background-color: var(--color-critical-bg-subtle);
  color: var(--color-critical-text);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--color-critical-400), var(--shadow-sm);
}

.btn--secondary-color.btn--error:disabled,
.btn--secondary-color.btn--error[disabled] {
  background-color: var(--color-critical-bg-subtle);
  color: var(--color-critical-disabled);
  box-shadow: var(--shadow-sm);
  cursor: not-allowed;
}

/* ===== SECONDARY GRAY ===== */
.btn--secondary-gray {
  background-color: var(--btn-secondary-gray-bg);
  color: var(--btn-secondary-gray-label);
}

.btn--secondary-gray:hover,
.btn--secondary-gray[data-hover] {
  background-color: var(--btn-secondary-gray-bg-hover);
  color: var(--btn-secondary-gray-label-active);
}

.btn--secondary-gray:focus-visible,
.btn--secondary-gray[data-focus] {
  background-color: var(--btn-secondary-gray-bg-hover);
  color: var(--btn-secondary-gray-label-active);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);
}

.btn--secondary-gray:active,
.btn--secondary-gray[data-active] {
  background-color: var(--btn-secondary-gray-bg-active);
  color: var(--btn-secondary-gray-label-active);
  box-shadow: var(--shadow-sm);
}

.btn--secondary-gray:disabled,
.btn--secondary-gray[disabled] {
  background-color: var(--btn-secondary-gray-bg-disabled);
  color: var(--btn-secondary-gray-label-disabled);
  cursor: not-allowed;
}

/* ===== TERTIARY COLOUR ===== */
.btn--tertiary-color {
  background-color: var(--color-brand-secondary-subtle2);
  color: var(--color-brand-secondary);
  border: none;
}

.btn--tertiary-color:hover,
.btn--tertiary-color[data-hover] {
  background-color: var(--btn-secondary-color-bg-hover);
  color: var(--btn-secondary-color-label);
}

.btn--tertiary-color:focus-visible,
.btn--tertiary-color[data-focus] {
  background-color: var(--btn-secondary-color-bg);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);
  color: var(--btn-secondary-color-label);
}

.btn--tertiary-color:active,
.btn--tertiary-color[data-active] {
  background-color: var(--btn-secondary-color-bg);
  color: var(--btn-secondary-color-label);
  box-shadow: var(--shadow-sm);
}

.btn--tertiary-color:disabled,
.btn--tertiary-color[disabled] {
  background-color: var(--btn-secondary-color-bg-disabled);
  color: var(--btn-secondary-color-label-disabled);
  border-color: transparent;
  cursor: not-allowed;
}

/* ===== TERTIAEY GRAY ===== */
.btn--tertiary-gray {
  background-color: var(--color-surface-default-subtle);
  color: var(--btn-secondary-gray-label);
}

.btn--tertiary-gray:hover,
.btn--tertiary-gray[data-hover] {
  background-color: var(--btn-secondary-gray-bg-hover);
  color: var(--btn-secondary-gray-label);
}

.btn--tertiary-gray:focus-visible,
.btn--tertiary-gray[data-focus] {
  background-color: var(--btn-secondary-gray-bg-hover);
  color: var(--btn-secondary-gray-label);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);
}

.btn--tertiary-gray:active,
.btn--tertiary-gray[data-active] {
  background-color: var(--btn-secondary-gray-bg-active);
  color: var(--btn-secondary-gray-label-active);
  box-shadow: var(--shadow-sm);
}

.btn--tertiary-gray:disabled,
.btn--tertiary-gray[disabled] {
  background-color: var(--btn-secondary-gray-bg-disabled);
  color: var(--btn-secondary-gray-label-disabled);
  cursor: not-allowed;
}

/* ===== OUTLINE GRAY (was Tertiary) ===== */
.btn--outline-gray {
  background-color: transparent;
  color: var(--btn-outline-gray-label);
  border: 1px solid var(--btn-outline-gray-border);
  box-shadow: var(--shadow-sm);
  line-height: 16px;
}

.btn--outline-gray:hover,
.btn--outline-gray[data-hover] {
  background: var(--btn-outline-gray-bg);
  color: var(--btn-outline-gray-label-active);
}

.btn--outline-gray:focus-visible,
.btn--outline-gray[data-focus] {
  background-color: var(--btn-outline-gray-bg);
  border: none;
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);
}

.btn--outline-gray:active,
.btn--outline-gray[data-active] {
  border: 1px solid var(--btn-outline-gray-border-active);
  color: var(--btn-outline-gray-label-active);
  box-shadow: var(--shadow-sm);

}

.btn--outline-gray:disabled,
.btn--outline-gray[disabled] {
  background-color: var(--btn-outline-gray-bg);
  border: 1px solid var(--btn-outline-gray-border-disabled);
  color: var(--btn-outline-gray-label-disabled);
  cursor: not-allowed;
}

/* ===== OUTLINE ERROR (Critical) ===== */
.btn--outline-gray.btn--error {
  background-color: transparent;
  color: var(--color-critical-text);
  border: 1px solid var(--color-critical-border);
}

.btn--outline-gray.btn--error:hover,
.btn--outline-gray.btn--error[data-hover] {
  background-color: var(--color-critical-bg-subtle);
  box-shadow: var(--shadow-sm);
}

.btn--outline-gray.btn--error:focus-visible,
.btn--outline-gray.btn--error[data-focus] {
  border: none !important;
  background-color: var(--color-surface-default);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--color-critical-400), var(--shadow-sm);
}

.btn--outline-gray.btn--error:disabled,
.btn--outline-gray.btn--error[disabled] {
  background-color: var(--color-surface-default);
  border: 1px solid var(--color-critical-disabled);
  color: var(--color-critical-disabled);
  cursor: not-allowed;
}

/* ===== OUTLINE COLOUR (brand-secondary bordered) ===== */
.btn--outline-color {
  background: transparent;
  color: var(--btn-outline-color-label);
  border: 1px solid var(--btn-outline-color-border);
  box-shadow: var(--shadow-sm);
  line-height: 16px;
}

.btn--outline-color:hover,
.btn--outline-color[data-hover] {
  border-color: var(--btn-outline-color-border-hover);
  background: var(--btn-outline-color-bg);
}

.btn--outline-color:focus-visible,
.btn--outline-color[data-focus] {
  background-color: var(--btn-outline-color-bg);
  border: none;
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);
}

.btn--outline-color:active,
.btn--outline-color[data-active] {
  border: 1px solid var(--btn-outline-color-border-active);
  color: var(--btn-outline-color-label-active);
  box-shadow: var(--shadow-sm);

}

.btn--outline-color:disabled,
.btn--outline-color[disabled] {
  background-color: var(--btn-outline-color-bg);
  border: 1px solid var(--btn-outline-color-border-disabled);
  color: var(--btn-outline-color-label-disabled);
  cursor: not-allowed;
}

/* ===== GHOST GRAY (was Ghost) ===== */
.btn--ghost-gray {
  background-color: transparent;
  color: var(--btn-ghost-gray-label);
  box-shadow: none;
}

.btn--ghost-gray:hover,
.btn--ghost-gray[data-hover] {
  background-color: var(--btn-ghost-gray-bg-hover);
}

.btn--ghost-gray:focus-visible,
.btn--ghost-gray[data-focus] {
  color: var(--btn-ghost-gray-label-active);
  background-color: var(--btn-ghost-gray-bg-hover);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);
}

.btn--ghost-gray:active,
.btn--ghost-gray[data-active] {
  color: var(--btn-ghost-gray-label-active);
  background-color: var(--btn-ghost-gray-bg-active);
  box-shadow: none;
}

.btn--ghost-gray:disabled,
.btn--ghost-gray[disabled] {
  color: var(--btn-ghost-gray-label-disabled);
  cursor: not-allowed;
  transform: none;
}

/* ===== GHOST ERROR (Critical) ===== */
.btn--ghost-gray.btn--error {
  background-color: transparent;
  color: var(--color-critical-text);
  box-shadow: none;
}

.btn--ghost-gray.btn--error:hover,
.btn--ghost-gray.btn--error[data-hover] {
  background-color: var(--color-critical-bg-subtle);
}

.btn--ghost-gray.btn--error:focus-visible,
.btn--ghost-gray.btn--error[data-focus] {
  background-color: transparent;
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--color-critical-400);
}

.btn--ghost-gray.btn--error:disabled,
.btn--ghost-gray.btn--error[disabled] {
  color: var(--color-critical-disabled);
  cursor: not-allowed;
  transform: none;
}

/* ===== GHOST COLOUR (was Secondary Ghost) ===== */
.btn--ghost-color {
  background-color: transparent;
  color: var(--btn-ghost-color-label);
  box-shadow: none;
}

.btn--ghost-color:hover,
.btn--ghost-color[data-hover] {
  background-color: var(--btn-ghost-color-bg);
}

.btn--ghost-color:focus-visible,
.btn--ghost-color[data-focus] {
  color: var(--btn-ghost-color-label);
  background-color: var(--btn-ghost-color-bg);
  box-shadow: 0px 0px 0px 2px var(--btn-primary-focus-ring-offset), 0px 0px 0px 4px var(--btn-primary-focus-ring), var(--shadow-sm);

}

.btn--ghost-color:active,
.btn--ghost-color[data-active] {
  color: var(--btn-ghost-color-label-active);
  background-color: var(--btn-ghost-color-bg);
  backdrop-filter: blur(16px);
  box-shadow: none;
}

.btn--ghost-color:disabled,
.btn--ghost-color[disabled] {
  background-color: transparent;
  color: var(--btn-ghost-color-label-disabled);
  cursor: not-allowed;
  transform: none;
}

/* ===== LINK GRAY (was Text) ===== */
.btn--link-gray {
  background-color: transparent;
  color: var(--btn-link-gray-label);
  box-shadow: none;
  padding-left: 0;
  padding-right: 0;
}

.btn--link-gray:hover,
.btn--link-gray[data-hover] {
  color: var(--btn-link-gray-label-hover);
}

.btn--link-gray:focus-visible,
.btn--link-gray[data-focus] {
  color: var(--btn-link-gray-label);
}

.btn--link-gray:active,
.btn--link-gray[data-active] {
  color: var(--btn-link-gray-label);
  box-shadow: none;
}

.btn--link-gray:disabled,
.btn--link-gray[disabled] {
  color: var(--btn-link-gray-label-disabled);
  cursor: not-allowed;
  transform: none;
}

.btn--link-gray.btn--sm,
.btn--link-gray.btn--md,
.btn--link-gray.btn--lg {
  padding-left: 0;
  padding-right: 0;
}

/* ===== LINK ERROR (Critical) ===== */
.btn--link-gray.btn--error {
  background-color: transparent;
  color: var(--color-critical-action);
  box-shadow: none;
}

.btn--link-gray.btn--error:hover,
.btn--link-gray.btn--error[data-hover] {
  color: var(--color-critical-action-hover);
}

.btn--link-gray.btn--error:focus-visible,
.btn--link-gray.btn--error[data-focus] {
  color: var(--color-critical-action);
}

.btn--link-gray.btn--error:disabled,
.btn--link-gray.btn--error[disabled] {
  color: var(--color-critical-disabled);
  cursor: not-allowed;
  transform: none;
}

/* ===== LINK COLOUR (was Link) ===== */
.btn--link-color {
  background-color: transparent;
  color: var(--btn-link-color-label);
  box-shadow: none;
  padding-left: 0;
  padding-right: 0;
}

.btn--link-color:hover,
.btn--link-color[data-hover] {
  color: var(--btn-link-color-label-hover);
}

.btn--link-color:focus-visible,
.btn--link-color[data-focus] {
  color: var(--btn-link-color-label);
}

.btn--link-color:active,
.btn--link-color[data-active] {
  color: var(--btn-link-color-label);
  box-shadow: none;
}

.btn--link-color:disabled,
.btn--link-color[disabled] {
  color: var(--btn-link-color-label-disabled);
  cursor: not-allowed;
  transform: none;
}

.btn--link-color.btn--sm,
.btn--link-color.btn--md,
.btn--link-color.btn--lg {
  padding-left: 0;
  padding-right: 0;
}

/* ===== Button Page Layout ===== */
.btn-spec__row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
}

.btn-spec__row--states {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 16px;
  margin-bottom: 12px;
  max-width: 280px;
}

.btn-spec__row--states .btn {
  justify-self: start;
}

.btn-state-labels {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 16px;
  margin-bottom: 8px;
  max-width: 280px;
}

.btn-state-labels span {
  color: var(--color-text-tertiary);
  font-size: 11px;
  text-align: left;
}

.btn-size-table-wrap {
  overflow-x: auto;
}

.btn-table {
  width: 100%;
  text-align: left;
  border-collapse: collapse;
}

.btn-table th,
.btn-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border-subtle);
}

.btn-table th {
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.btn-table tbody tr:last-child td {
  border-bottom: none;
}

.btn-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.btn-tag--sm {
  background-color: var(--color-critical-50);
  color: var(--color-critical-700);
}

.btn-tag--default {
  background-color: var(--color-peggy-blue-50);
  color: var(--color-peggy-blue-700);
}

.btn-tag--md {
  background-color: var(--color-success-50);
  color: var(--color-success-700);
}

.btn-tag--lg {
  background-color: var(--color-warning-50);
  color: var(--color-warning-800);
}