/* ============================================================================
   Components - Buttons
   system/components/buttons.css

   Two button families:

   1. Haptic - .gm-btn-* - for Bridge, SCO, POS (tactile, physical-feel)
      Gradient fill, inset highlight, hard 2px outer shadow, drop shadow,
      press-down feedback. Min 48px touch target.

   2. Web - .gm-web-btn-* - for giantmonkey.de, gomus.de, web admin
      Flat solid fill, subtle translateY hover. Min 44px target.

   Use one family OR the other in a given product. Don't mix.

   Variants (both families):
     - primary    - main action, brand fill
     - secondary  - supporting action, outline/subtle fill
     - success    - confirmation (brand green, visually close to primary;
                    use when semantic clarity matters)
     - warning    - caution action, amber fill
     - danger     - destructive action, red fill
     - ghost      - (haptic only) tertiary, transparent

   States (both families):
     - :hover
     - :focus-visible  - 3px accent outline ring
     - :active         - press-down transform
     - .is-active      - persistent "toggled on" state (button groups, tabs)
     - .is-loading     - disables interaction + opacity; pair with
                         <span class="gm-spinner gm-spinner-sm gm-spinner-on-fill">
     - :disabled       - opacity 0.4, pointer-events blocked

   Size modifiers: .gm-btn-sm / .gm-btn-lg / .gm-btn-icon / .gm-btn-block

   See sibling buttons.md for HTML, accessibility, do/don't.
   ============================================================================ */

/* ----------------------------------------------------------------------
   Haptic family - .gm-btn
   ---------------------------------------------------------------------- */
.gm .gm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gm-space-2);
  min-height: 48px;
  padding: var(--gm-space-3) var(--gm-space-6);
  font-family: var(--gm-font-sans);
  font-size: var(--gm-fs-base);
  font-weight: 600;
  border-radius: var(--gm-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--gm-duration-fast) var(--gm-ease-out),
    color var(--gm-duration-fast) var(--gm-ease-out),
    transform var(--gm-duration-instant) var(--gm-ease-out),
    box-shadow var(--gm-duration-fast) var(--gm-ease-out),
    border-color var(--gm-duration-fast) var(--gm-ease-out);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.gm .gm-btn:disabled,
.gm .gm-btn.is-loading {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none !important;
  pointer-events: none;
}
.gm .gm-btn.is-loading {
  opacity: 0.6;
}

/* Explicit focus ring - keyboard users. The :active / hover styles handle
   pointer feedback; :focus-visible gives a clean accent outline that does
   not fight with the bevelled chrome. */
.gm .gm-btn:focus-visible {
  outline: 3px solid var(--gm-accent);
  outline-offset: 2px;
}

/* Primary - gradient + bevel + glow */
.gm .gm-btn-primary {
  background: linear-gradient(180deg, var(--gm-pm) 0%, var(--gm-p) 100%);
  color: var(--gm-text-inverse);
  border-color: var(--gm-pd);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 2px 0 var(--gm-pd),
    0 4px 12px rgba(0, 0, 0, 0.35);
}
.gm .gm-btn-primary:hover:not(:disabled) {
  background: linear-gradient(180deg, #28b187 0%, var(--gm-pm) 100%);
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 3px 0 var(--gm-pd),
    0 6px 16px rgba(0, 0, 0, 0.4);
}
.gm .gm-btn-primary:active:not(:disabled),
.gm .gm-btn-primary.is-active {
  transform: translateY(1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 0 0 var(--gm-pd),
    0 2px 6px rgba(0, 0, 0, 0.3);
}

/* Success - semantically "confirmation". Visually close to primary
   because the brand's affirmative color IS green; the slightly stronger
   border + glow signals "you just did the right thing". */
.gm .gm-btn-success {
  background: linear-gradient(180deg, var(--gm-pl) 0%, var(--gm-pm) 100%);
  color: var(--gm-pdk);
  border-color: var(--gm-p);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    0 2px 0 var(--gm-p),
    0 4px 14px rgba(93, 202, 165, 0.35);
}
.gm .gm-btn-success:hover:not(:disabled) {
  background: linear-gradient(180deg, #7ddab9 0%, #28b187 100%);
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.32),
    0 3px 0 var(--gm-p),
    0 6px 18px rgba(93, 202, 165, 0.45);
}
.gm .gm-btn-success:active:not(:disabled),
.gm .gm-btn-success.is-active {
  transform: translateY(1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 0 0 var(--gm-p),
    0 2px 6px rgba(93, 202, 165, 0.3);
}

/* Warning - orange gradient. POS-aligned (#f57c00). Use for caution
   actions that require attention but are not destructive (e.g.
   "Reboot", "Force sync", "Override"). */
.gm .gm-btn-warning {
  background: linear-gradient(180deg, var(--gm-warning-light) 0%, var(--gm-warning) 100%);
  color: #1c1917;
  border-color: var(--gm-warning-dark);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    0 2px 0 var(--gm-warning-dark),
    0 4px 12px rgba(245, 124, 0, 0.4);
}
.gm .gm-btn-warning:hover:not(:disabled) {
  background: linear-gradient(180deg, #ffc670 0%, #ff8f1a 100%);
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    0 3px 0 var(--gm-warning-dark),
    0 6px 16px rgba(245, 124, 0, 0.5),
    var(--gm-glow-warning);
}
.gm .gm-btn-warning:active:not(:disabled),
.gm .gm-btn-warning.is-active {
  transform: translateY(1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 0 0 var(--gm-warning-dark),
    0 2px 6px rgba(245, 124, 0, 0.35);
}

/* Secondary - bevelled neutral */
.gm .gm-btn-secondary {
  background: var(--gm-bg-elevated);
  color: var(--gm-accent-strong);
  border-color: var(--gm-border-strong);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 2px 0 rgba(0, 0, 0, 0.2),
    0 4px 10px rgba(0, 0, 0, 0.25);
}
.gm .gm-btn-secondary:hover:not(:disabled) {
  background: var(--gm-bg-base);
  border-color: var(--gm-accent);
  color: var(--gm-text-primary);
  transform: translateY(-1px);
}
.gm .gm-btn-secondary:active:not(:disabled),
.gm .gm-btn-secondary.is-active {
  transform: translateY(1px);
  background: var(--gm-bg-base);
  border-color: var(--gm-accent);
  color: var(--gm-text-primary);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 2px 4px rgba(0, 0, 0, 0.25);
}

/* Ghost - minimal */
.gm .gm-btn-ghost {
  background: transparent;
  color: var(--gm-text-secondary);
  border-color: transparent;
}
.gm .gm-btn-ghost:hover:not(:disabled) {
  background: var(--gm-border-subtle);
  color: var(--gm-text-primary);
}
.gm .gm-btn-ghost:active:not(:disabled) {
  transform: scale(0.98);
}
.gm .gm-btn-ghost.is-active {
  background: var(--gm-border-default);
  color: var(--gm-text-primary);
}

/* Danger - destructive */
.gm .gm-btn-danger {
  background: linear-gradient(180deg, #e85a6a 0%, #d64757 100%);
  color: var(--gm-text-inverse);
  border-color: #a82a38;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 2px 0 #a82a38,
    0 4px 12px rgba(168, 42, 56, 0.4);
}
.gm .gm-btn-danger:hover:not(:disabled) {
  transform: translateY(-1px);
}
.gm .gm-btn-danger:active:not(:disabled),
.gm .gm-btn-danger.is-active {
  transform: translateY(1px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 2px 6px rgba(168, 42, 56, 0.3);
}

/* Size + shape modifiers */
.gm .gm-btn-icon { min-width: 48px; padding: var(--gm-space-3); }
.gm .gm-btn-lg   { min-height: 56px; padding: var(--gm-space-4) var(--gm-space-8); font-size: var(--gm-fs-lg); }
.gm .gm-btn-sm   { min-height: 36px; padding: var(--gm-space-2) var(--gm-space-4); font-size: var(--gm-fs-sm); }
.gm .gm-btn-block { display: flex; width: 100%; }

/* ----------------------------------------------------------------------
   Accent (rail) variants - .gm-btn-accent-*
   ----------------------------------------------------------------------
   Third sub-pattern, orthogonal to haptic/web. For button-DENSE screens
   (POS cash register, toolbars, grids of 5+ buttons) where full-fill
   primary chrome on every button would overwhelm the eye.

   Pattern: elevated neutral background + 1px subtle border all around
   + 4px colored LEFT rail in the semantic color. No gradient, no bevel,
   subtle shadow. On hover, the full border takes the accent color and a
   soft glow appears. On active/toggled, the button fills with the
   accent color (signals "pressed" without the full chrome).

   Rule of thumb:
     - sparse (1-3 buttons visible) → use the full-fill variants
     - dense (5+ buttons visible) → use accent rail variants for all
       except the ONE true primary CTA on the screen
   ---------------------------------------------------------------------- */
.gm .gm-btn-accent {
  background: var(--gm-bg-elevated);
  color: var(--gm-text-primary);
  border: 1px solid var(--gm-border-subtle);
  border-left-width: 4px;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}
.gm .gm-btn-accent:hover:not(:disabled) {
  transform: translateY(-1px);
}
.gm .gm-btn-accent:active:not(:disabled) {
  transform: translateY(1px);
}

.gm .gm-btn-accent-primary {
  border-left-color: var(--gm-p);
}
.gm .gm-btn-accent-primary:hover:not(:disabled) {
  border-color: var(--gm-p);
  border-left-width: 4px;
  box-shadow: 0 4px 12px rgba(10, 125, 97, 0.3), var(--gm-glow-primary);
}
.gm .gm-btn-accent-primary.is-active,
.gm .gm-btn-accent-primary:active:not(:disabled) {
  background: var(--gm-p);
  color: #ffffff;
  border-color: var(--gm-p);
}

.gm .gm-btn-accent-success {
  border-left-color: var(--gm-pl);
}
.gm .gm-btn-accent-success:hover:not(:disabled) {
  border-color: var(--gm-pl);
  border-left-width: 4px;
  box-shadow: 0 4px 12px rgba(93, 202, 165, 0.3), var(--gm-glow-success);
}
.gm .gm-btn-accent-success.is-active,
.gm .gm-btn-accent-success:active:not(:disabled) {
  background: var(--gm-pl);
  color: var(--gm-pdk);
  border-color: var(--gm-pl);
}

.gm .gm-btn-accent-warning {
  border-left-color: var(--gm-warning);
}
.gm .gm-btn-accent-warning:hover:not(:disabled) {
  border-color: var(--gm-warning);
  border-left-width: 4px;
  color: var(--gm-warning);
  box-shadow: 0 4px 12px rgba(245, 124, 0, 0.3), var(--gm-glow-warning);
}
.gm .gm-btn-accent-warning.is-active,
.gm .gm-btn-accent-warning:active:not(:disabled) {
  background: var(--gm-warning);
  color: #1c1917;
  border-color: var(--gm-warning);
}

.gm .gm-btn-accent-danger {
  border-left-color: var(--gm-danger);
}
.gm .gm-btn-accent-danger:hover:not(:disabled) {
  border-color: var(--gm-danger);
  border-left-width: 4px;
  color: var(--gm-danger);
  box-shadow: 0 4px 12px rgba(252, 165, 165, 0.25), var(--gm-glow-danger);
}
.gm .gm-btn-accent-danger.is-active,
.gm .gm-btn-accent-danger:active:not(:disabled) {
  background: #c62828;
  color: #ffffff;
  border-color: #c62828;
}

.gm .gm-btn-accent-info {
  border-left-color: var(--gm-info);
}
.gm .gm-btn-accent-info:hover:not(:disabled) {
  border-color: var(--gm-info);
  border-left-width: 4px;
  color: var(--gm-info);
  box-shadow: 0 4px 12px rgba(93, 185, 232, 0.25), var(--gm-glow-info);
}
.gm .gm-btn-accent-info.is-active,
.gm .gm-btn-accent-info:active:not(:disabled) {
  background: var(--gm-info);
  color: var(--gm-pdk);
  border-color: var(--gm-info);
}

/* ----------------------------------------------------------------------
   Web family - .gm-web-btn
   ---------------------------------------------------------------------- */
.gm .gm-web-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gm-space-2);
  min-height: 44px;
  padding: var(--gm-space-3) var(--gm-space-6);
  font-family: var(--gm-font-sans);
  font-size: var(--gm-fs-base);
  font-weight: 600;
  letter-spacing: 0;
  border-radius: var(--gm-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--gm-duration-fast) var(--gm-ease-out),
    color var(--gm-duration-fast) var(--gm-ease-out),
    transform var(--gm-duration-fast) var(--gm-ease-out);
  -webkit-tap-highlight-color: transparent;
}
.gm .gm-web-btn:disabled,
.gm .gm-web-btn.is-loading {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}
.gm .gm-web-btn.is-loading {
  opacity: 0.6;
}
.gm .gm-web-btn:focus-visible {
  outline: 3px solid var(--gm-accent);
  outline-offset: 2px;
}

.gm .gm-web-btn-primary {
  background: var(--gm-p);
  color: #ffffff;
}
.gm .gm-web-btn-primary:hover:not(:disabled) {
  background: var(--gm-pm);
  transform: translateY(-1px);
}
.gm .gm-web-btn-primary.is-active {
  background: var(--gm-pd);
}

.gm .gm-web-btn-secondary {
  background: transparent;
  color: var(--gm-accent-strong);
  border-color: var(--gm-border-strong);
}
.gm .gm-web-btn-secondary:hover:not(:disabled) {
  background: var(--gm-border-subtle);
  border-color: var(--gm-accent);
}
.gm .gm-web-btn-secondary.is-active {
  background: var(--gm-border-subtle);
  border-color: var(--gm-accent);
  color: var(--gm-text-primary);
}

/* Web success - same brand green as primary, semantic variant */
.gm .gm-web-btn-success {
  background: var(--gm-pm);
  color: #ffffff;
}
.gm .gm-web-btn-success:hover:not(:disabled) {
  background: var(--gm-p);
  transform: translateY(-1px);
}
.gm .gm-web-btn-success.is-active {
  background: var(--gm-pd);
}

/* Web warning - POS-aligned orange */
.gm .gm-web-btn-warning {
  background: var(--gm-warning);
  color: #ffffff;
}
.gm .gm-web-btn-warning:hover:not(:disabled) {
  background: var(--gm-warning-dark);
  transform: translateY(-1px);
}
.gm .gm-web-btn-warning.is-active {
  background: #8a4500;
}

/* Web danger */
.gm .gm-web-btn-danger {
  background: #c62828;
  color: #ffffff;
}
.gm .gm-web-btn-danger:hover:not(:disabled) {
  background: #a31f1f;
  transform: translateY(-1px);
}
.gm .gm-web-btn-danger.is-active {
  background: #7f1717;
}

/* ============================================================================
   Light surface (kiosk) adjustments for the haptic button family
   ----------------------------------------------------------------------------
   The default .gm-btn-* shadows are calibrated for the deep green canvas.
   On a white canvas (SCO, POS 2.0 - `data-surface="light"`), the same
   shadows read as bruises. Tone down the drop shadows and keep the
   gradient + inset highlight + hard bottom edge that make the tile feel
   pressable. Sharp corners already flip via the radii tokens.

   Shared concept: each :hover adds a slightly stronger drop, :active
   collapses the bottom edge to simulate press-down. Same behaviour as
   default, just quieter weights for a white canvas.
   ============================================================================ */

[data-surface="light"] .gm .gm-btn-primary,
[data-surface="light"] .gm .gm-btn-success {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 2px 0 var(--gm-pd),
    0 4px 12px rgba(0, 0, 0, 0.12);
}
[data-surface="light"] .gm .gm-btn-primary:hover:not(:disabled),
[data-surface="light"] .gm .gm-btn-success:hover:not(:disabled) {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 3px 0 var(--gm-pd),
    0 6px 16px rgba(0, 0, 0, 0.15);
}
[data-surface="light"] .gm .gm-btn-primary:active:not(:disabled),
[data-surface="light"] .gm .gm-btn-primary.is-active,
[data-surface="light"] .gm .gm-btn-success:active:not(:disabled),
[data-surface="light"] .gm .gm-btn-success.is-active {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 0 0 var(--gm-pd),
    0 2px 6px rgba(0, 0, 0, 0.12);
}

/* Secondary on light: white bg, green outline + text, subtle shadow */
[data-surface="light"] .gm .gm-btn-secondary {
  background: #ffffff;
  color: var(--gm-p);
  border-color: var(--gm-p);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 1),
    0 1px 0 var(--gm-g2),
    0 2px 6px rgba(0, 0, 0, 0.06);
}
[data-surface="light"] .gm .gm-btn-secondary:hover:not(:disabled) {
  background: var(--gm-pls);
  color: var(--gm-pd);
  border-color: var(--gm-pd);
}
[data-surface="light"] .gm .gm-btn-secondary:active:not(:disabled),
[data-surface="light"] .gm .gm-btn-secondary.is-active {
  background: var(--gm-pls);
  color: var(--gm-pd);
  border-color: var(--gm-pd);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    0 1px 2px rgba(0, 0, 0, 0.08);
}

/* Danger on light: red gradient stays, softer drop */
[data-surface="light"] .gm .gm-btn-danger {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 2px 0 #a82a38,
    0 4px 12px rgba(168, 42, 56, 0.2);
}
[data-surface="light"] .gm .gm-btn-danger:active:not(:disabled),
[data-surface="light"] .gm .gm-btn-danger.is-active {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 2px 6px rgba(168, 42, 56, 0.15);
}

/* Warning on light: orange gradient stays, softer drop */
[data-surface="light"] .gm .gm-btn-warning {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    0 2px 0 var(--gm-warning-dark),
    0 4px 12px rgba(245, 124, 0, 0.2);
}

/* Ghost on light: no bg change, just darker text */
[data-surface="light"] .gm .gm-btn-ghost {
  color: var(--gm-g7);
}
[data-surface="light"] .gm .gm-btn-ghost:hover:not(:disabled) {
  background: var(--gm-g1);
  color: var(--gm-g9);
}