/* GO 1.06: deliberate actions get a tactile response; prose links stay links.
   Loaded after page styles. No generated arrows, JS, or perpetual animation. */
:root {
  --go-action-ease: cubic-bezier(.2, .7, .2, 1);
  --go-action-duration: 180ms;
  --go-content-gutter: 34px;
}

/* Shared page edges and controls, including case-study templates that omitted
   the original primary-button rules. Keep the established square site style. */
.masthead,.section,.case-hero,.hero,.guide-intro,.guide-layout,footer {
  padding-inline: var(--go-content-gutter);
}
#aigo .aigo-card { padding-inline: var(--go-content-gutter); }
a.conversation-button,.meeting-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  max-width: 100%;
  min-height: 56px;
  padding: 16px 24px;
  border-width: 2px;
  border-style: solid;
  border-radius: 0;
  font: 700 18px/1.4 Arial,Helvetica,sans-serif;
  text-align: center;
  text-decoration: none;
  white-space: normal;
  overflow-wrap: anywhere;
  text-wrap: balance;
  vertical-align: middle;
}
.masthead nav a { min-height: 44px; display: inline-flex; align-items: center; }
.contact-links,.cord-links,.ibm-jump {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
}
.panel .text-link + p { margin-top: 16px; }
.panel p + .text-link { margin-top: 4px; }
.meeting-form > .form-grid + .field { margin-top: 26px; }
.meeting-form .field { min-width: 0; }
.meeting-form input:not([type=checkbox]),.meeting-form textarea,.work-tools select {
  border-radius: 0;
}
.section h2,.section h3,.guide-intro h1,.case-hero h1 {
  overflow-wrap: anywhere;
}
.work-list > details > summary {
  display: grid;
  grid-template-columns: minmax(0,2fr) minmax(0,1fr) 24px;
  gap: 20px;
}
.work-list > details > summary > * { min-width: 0; }
.work-list > details > summary::after { grid-column: 3; justify-self: end; }
/* Let long mobile headings wrap without changing the desktop typography. */
@media(max-width:650px) {
  :root { --go-content-gutter: 22px; }
  .section h2 { font-size: clamp(34px,9.5vw,44px); }
  .case-hero h1 { font-size: clamp(42px,12vw,64px); line-height: 1.02; }
  .section-header { gap: 24px; }
  .masthead nav a { min-height: 44px; }
  a.conversation-button,.meeting-form button { font-size: 16px; padding: 14px 20px; }
  footer .legal-footer nav { justify-content: flex-start; gap: 12px 20px; }
  .work-list > details > summary,.ibm-video-group > summary,.guide-method > summary {
    display: grid;
    grid-template-columns: minmax(0,1fr) 24px;
    gap: 16px;
  }
  .work-list > details > summary::after,.ibm-video-group > summary::after,.guide-method > summary::after {
    grid-column: 2;
    justify-self: end;
  }
}

/* Only explicit editorial CTAs become outlined buttons. Source credits retain
   their lightweight link treatment. Keeping inline-block preserves AIGO marks. */
.text-link:not(.source-note),.guide-rail a {
  display: inline-block;
  max-width: 100%;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid currentColor;
  line-height: 1.45;
  text-decoration: none;
  vertical-align: middle;
  overflow-wrap: anywhere;
  text-wrap: balance;
}
.guide-rail a { margin-top: 12px; }
.guide-rail .rail-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid #b6ff00;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.rail-action > span:first-child { min-width: 0; }
.rail-action-arrow {
  flex: 0 0 auto;
  transition: transform var(--go-action-duration) var(--go-action-ease);
}
@media (hover: hover) and (pointer: fine) {
  .guide-rail .rail-action:hover .rail-action-arrow { transform: translateX(3px); }
}
@media (prefers-reduced-motion: reduce) {
  .rail-action-arrow { transition: none !important; transform: none !important; }
}
figcaption .text-link:not(.source-note) { display: table; margin-top: 12px; }

/* Inline policy/contact references must not become buttons inside sentences. */
.meeting-form .form-note .text-link,
.meeting-form .form-note .text-link:hover,
.meeting-form .form-note .text-link:active {
  display: inline;
  min-height: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  box-shadow: none;
  transform: none;
}

:is(.text-link:not(.source-note), .conversation-button, .masthead nav .nav-cta,
    .meeting-form button, .copy-draft, .viewer-close,
    .privacy-dialog button, .private-video button,
    .starter-grid button, .aigo-chat button, .aigo-chat .guide-sources a, .aigo-chat .guide-action,
    .aigo-chat .aigo-home-actions > a, .guide-rail a) {
  touch-action: manipulation;
  transition:
    background-color var(--go-action-duration) var(--go-action-ease),
    border-color var(--go-action-duration) var(--go-action-ease),
    color var(--go-action-duration) var(--go-action-ease),
    box-shadow var(--go-action-duration) var(--go-action-ease),
    transform var(--go-action-duration) var(--go-action-ease);
}

.work-list > details > summary,
.ibm-video-group > summary,
.guide-method > summary {
  padding-inline: 16px;
  min-height: 48px;
  transition: background-color var(--go-action-duration) var(--go-action-ease);
}
.guide-method > summary { padding-block: 14px; }
.guide-method > p,.work-list > details > p { margin-inline: 16px; }
.ibm-video-group > .media-grid { padding-inline: 16px; }

.work-list > details > summary::after,
.ibm-video-group > summary::after,
.guide-method > summary::after,
.starter-grid button span:last-child {
  transition: transform var(--go-action-duration) var(--go-action-ease);
}

/* Hover movement only on devices with a precise pointer, avoiding sticky
   hover states after taps. A 2px lift has no effect on document flow. */
@media (hover: hover) and (pointer: fine) {
  .text-link:not(.source-note):hover,.guide-rail a:hover {
    background: #b6ff00;
    border-color: #080808;
    color: #080808;
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: 0 3px 0 #080808;
  }

  .conversation-button:hover,
  .masthead nav .nav-cta:hover,
  .meeting-form button:not(:disabled):hover,
  .copy-draft:not(:disabled):hover {
    background: #b6ff00;
    border-color: #080808;
    color: #080808;
    transform: translateY(-2px);
    box-shadow: 0 3px 0 #080808;
  }

  .hero .conversation-button:hover,
  .impact-closing .conversation-button:hover,
  .masthead nav .nav-cta:hover {
    border-color: #b6ff00;
    box-shadow: 0 3px 0 #789e12;
  }

  .hero .conversation-button:hover,
  .impact-closing .conversation-button:hover {
    background: #fff;
  }

  .viewer-close:not(:disabled):hover,
  .privacy-dialog button:not(:disabled):hover,
  .private-video button:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 3px 0 #789e12;
  }

  /* Chat layout and its light/dark palettes are owned by aigo-chat.css. */
  .starter-grid button:not(:disabled):not([aria-disabled="true"]):hover,
  .aigo-chat button:not(:disabled):not([aria-disabled="true"]):hover,
  .aigo-chat .guide-sources a:hover,
  .aigo-chat .guide-action:hover,
  .aigo-chat .aigo-home-actions > a:hover,
  .guide-rail a:hover {
    transform: translateY(-2px);
  }

  .starter-grid button:not(:disabled):hover span:last-child {
    transform: translate(2px, -2px);
  }

  .work-list > details > summary:hover,
  .ibm-video-group > summary:hover,
  .guide-method > summary:hover {
    background-color: rgba(120, 158, 18, .09);
  }

  .work-list > details > summary:hover::after,
  .ibm-video-group > summary:hover::after,
  .guide-method > summary:hover::after {
    transform: scale(1.15);
  }
}

/* Keyboard feedback remains obvious on both black and white panels. */
:is(.text-link:not(.source-note), .conversation-button, .masthead nav .nav-cta,
    .meeting-form button, .copy-draft, .viewer-close,
    .privacy-dialog button, .private-video button,
    .starter-grid button, .aigo-chat button, .aigo-chat .guide-sources a, .aigo-chat .guide-action,
    .aigo-chat .aigo-home-actions > a, .guide-rail a):focus-visible {
  outline: 2px solid #080808;
  outline-offset: 4px;
  box-shadow: 0 0 0 4px #fff;
}

/* Disabled buttons cannot appear to lift or invite another submission. */
:is(.meeting-form button, .copy-draft, .viewer-close, .privacy-dialog button,
    .private-video button, .starter-grid button, .aigo-chat button):disabled,
.aigo-chat button[aria-disabled="true"] {
  opacity: .55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Press feedback works for touch as well as mouse. Keep focus outlines intact. */
:is(.text-link:not(.source-note), .conversation-button, .masthead nav .nav-cta,
    .meeting-form button, .copy-draft, .viewer-close,
    .privacy-dialog button, .private-video button,
    .starter-grid button, .aigo-chat button, .aigo-chat .guide-sources a, .aigo-chat .guide-action,
    .aigo-chat .aigo-home-actions > a, .guide-rail a):not(:disabled):not([aria-disabled="true"]):active {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  :is(.text-link:not(.source-note), .conversation-button, .masthead nav .nav-cta,
      .meeting-form button, .copy-draft, .viewer-close,
      .privacy-dialog button, .private-video button,
      .starter-grid button, .aigo-chat button, .aigo-chat .guide-sources a, .aigo-chat .guide-action,
      .aigo-chat .aigo-home-actions > a, .guide-rail a,
      .work-list > details > summary, .ibm-video-group > summary,
      .guide-method > summary, .starter-grid button span:last-child),
  .work-list > details > summary::after,
  .ibm-video-group > summary::after,
  .guide-method > summary::after {
    transition: none !important;
    transform: none !important;
  }
}