/* Shared chrome for the free machining tool pages (/step-file-viewer, /step-to-stl,
   /stl-to-step, /gcode-viewer). Built on the --ploy-* tokens from ploy.css so the
   tools look like the rest of the site without needing a build step. */

.tl-h1 { font-family: Inter, system-ui, sans-serif; font-weight: 600;
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3.1rem); line-height: 1.08; letter-spacing: -.03em;
  color: var(--ploy-neutral-inverse-950); margin: 1rem 0 1.1rem; }
.tl-lede { font-size: clamp(1.02rem, 1rem + .3vw, 1.13rem); line-height: 1.65;
  color: var(--ploy-neutral-inverse-800); margin: 0; max-width: 44rem; }
.tl-wrap { max-width: 72.5rem; margin: 0 auto; }
@media (max-width: 767px) { .tl-wrap { padding: 0 1.25rem; } }
@media (min-width: 768px) { .tl-wrap { padding: 0 2.5rem; } }

/* Tool card */
.tl-tool { border: 1px solid var(--ploy-neutral-primary-s3); border-radius: 0;
  overflow: hidden; margin: 2.5rem 0; background: var(--ploy-background-primary); }
.tl-stage { position: relative; background: var(--panel); }
.tl-canvas { display: block; width: 100%; height: 480px; touch-action: none; }
@media (max-width: 640px) { .tl-canvas { height: 340px; } }

.tl-drop { position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: .6rem; text-align: center; padding: 2rem;
  border: 2px dashed var(--ploy-neutral-primary-s4); margin: .75rem;
  cursor: pointer; transition: border-color .15s ease, background .15s ease; }
.tl-drop:hover, .tl-drop.drag { border-color: var(--ploy-accent-primary);
  background: rgba(17,17,17,.03); }
.tl-drop strong { font-size: 1.05rem; font-weight: 600; color: var(--ploy-neutral-inverse-950); }
.tl-drop span { font-size: .88rem; color: var(--ploy-neutral-primary-700); }
.tl-drop small { font-size: .78rem; color: var(--ploy-neutral-primary-500); }

.tl-bar { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem 1.4rem;
  padding: .85rem 1.1rem; border-top: 1px solid var(--ploy-neutral-primary-s3); }
.tl-facts { display: flex; flex-wrap: wrap; gap: .35rem 1.3rem; flex: 1; min-width: 0; }
.tl-fact { font-family: 'IBM Plex Mono', ui-monospace, monospace; font-size: .72rem;
  letter-spacing: .05em; color: var(--ploy-neutral-primary-500); }
.tl-fact b { color: var(--ploy-neutral-inverse-950); font-weight: 500; }
.tl-actions { display: flex; gap: .6rem; flex-wrap: wrap; }
.tl-btn { display: inline-flex; align-items: center; gap: .45rem; font: inherit; font-size: .88rem;
  font-weight: 500; padding: .55rem 1.15rem; border-radius: 0; cursor: pointer;
  border: 1px solid var(--ploy-neutral-primary-s4); background: none;
  color: var(--ploy-neutral-inverse-950); transition: border-color .15s ease, opacity .2s ease; }
.tl-btn:hover { border-color: var(--ploy-accent-primary); }
.tl-btn.primary { background: var(--ploy-accent-primary); border-color: var(--ploy-accent-primary);
  color: var(--ploy-text-on-accent-primary); }
.tl-btn.primary:hover { opacity: .9; }
.tl-btn[disabled] {
  cursor: default; opacity: 1;
  background: none; border-color: var(--ploy-neutral-primary-s3);
  color: var(--ploy-neutral-primary-500);
}
.tl-btn.primary[disabled] {
  background: none; border-color: var(--ploy-neutral-primary-s3);
  color: var(--ploy-neutral-primary-500);
}
.tl-btn[disabled]:hover { border-color: var(--ploy-neutral-primary-s3); }

.tl-status { margin: 0; padding: 0 1.1rem 1rem; font-size: .87rem; line-height: 1.5;
  color: var(--ploy-neutral-primary-700); }
.tl-status.err { color: #c0684f; }
.tl-spin { position: absolute; inset: 0; display: none; align-items: center; justify-content: center;
  background: rgba(255,255,255,.66); backdrop-filter: blur(2px); }
.tl-spin.on { display: flex; }
.tl-spin i { width: 2.2rem; height: 2.2rem; border: 3px solid var(--ploy-neutral-primary-s4);
  border-top-color: var(--ploy-accent-primary); border-radius: 50%; animation: tlspin .8s linear infinite; }
@keyframes tlspin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .tl-spin i { animation: none; } }

.tl-legend { display: flex; gap: 1.1rem; padding: 0 1.1rem .9rem; flex-wrap: wrap; }
.tl-legend span { display: inline-flex; align-items: center; gap: .4rem; font-size: .78rem;
  color: var(--ploy-neutral-primary-700); }
.tl-legend i { width: 1.1rem; height: 2px; display: block; }

/* Prose */
.tl-body { max-width: 44rem; }
.tl-body h2, .tl-body h3 { font-family: Inter, system-ui, sans-serif; }
.tl-body h2 { font-size: clamp(1.4rem, 1.2rem + .7vw, 1.85rem); font-weight: 600;
  letter-spacing: -.02em; color: var(--ploy-neutral-inverse-950); margin: 2.8rem 0 .9rem; }
.tl-body h3 { font-size: 1.05rem; font-weight: 600; color: var(--ploy-neutral-inverse-950);
  margin: 1.7rem 0 .5rem; }
.tl-body p { font-size: 1rem; line-height: 1.7; color: var(--ploy-neutral-inverse-800); margin: 0 0 1rem; }
.tl-body ul { margin: 0 0 1.1rem; padding-left: 1.2rem; display: flex; flex-direction: column; gap: .5rem; }
.tl-body li { font-size: 1rem; line-height: 1.65; color: var(--ploy-neutral-inverse-800); }
.tl-body a { color: var(--ploy-accent-primary); text-decoration: underline;
  text-underline-offset: 3px; }
.tl-body code { font-family: 'IBM Plex Mono', ui-monospace, monospace; font-size: .88em;
  background: var(--panel); padding: .12em .38em; }

.tl-faq { border-top: 1px solid var(--ploy-neutral-primary-s3); }
.tl-faq details { border-bottom: 1px solid var(--ploy-neutral-primary-s3); }
.tl-faq summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.1rem 0; cursor: pointer; font-weight: 500; font-size: 1rem;
  color: var(--ploy-neutral-inverse-950); }
.tl-faq summary::after { content: '+'; color: var(--ploy-accent-primary); font-size: 1.3rem; }
.tl-faq details[open] summary::after { content: '\2212'; }
.tl-faq div { padding: 0 0 1.2rem; font-size: .97rem; line-height: 1.7;
  color: var(--ploy-neutral-inverse-800); }

/* Cross-links between the tools */
.tl-more { display: grid; gap: .8rem; margin: 2.5rem 0 0; }
@media (min-width: 640px) { .tl-more { grid-template-columns: repeat(2, 1fr); } }
.tl-card { display: block; padding: 1.05rem 1.2rem; border: 1px solid var(--ploy-neutral-primary-s3);
  text-decoration: none; transition: border-color .15s ease; }
.tl-card:hover { border-color: var(--ploy-accent-primary); }
.tl-card b { display: block; font-size: .97rem; font-weight: 600;
  color: var(--ploy-neutral-inverse-950); margin-bottom: .2rem; }
.tl-card span { font-size: .85rem; line-height: 1.5; color: var(--ploy-neutral-primary-700); }

.tl-cta { margin: 3rem 0 0; padding: 1.6rem 1.7rem;
  background: var(--ploy-background-inverse); }
.tl-cta p { margin: 0 0 1rem; font-size: 1rem; line-height: 1.65; color: rgba(255,255,255,.72); }
.tl-cta a { display: inline-flex; align-items: center; gap: .5rem; font-size: .92rem; font-weight: 500;
  padding: .65rem 1.3rem; border-radius: 0; text-decoration: none;
  background: var(--ploy-accent-primary); color: var(--ploy-text-on-accent-primary); }

.tl-privacy { display: inline-flex; align-items: center; gap: .45rem; font-size: .8rem;
  color: var(--ploy-neutral-primary-700); margin-top: 1.1rem; }


/* Segmented control. Replaces a native <select> in the action bar: the OS
   dropdown carried its own border, arrow and font, none of which are ours, and
   it hid two of three options behind a click. */
.tl-seg { display: inline-flex; border: 1px solid var(--ploy-neutral-primary-s4);
  overflow: hidden; }
.tl-seg button {
  font-family: Inter, system-ui, -apple-system, sans-serif;
  font-size: .82rem; font-weight: 500;
  padding: .5rem .85rem; min-height: 2.4rem;
  background: none; border: 0; border-right: 1px solid var(--ploy-neutral-primary-s4);
  color: var(--ploy-neutral-primary-700); cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.tl-seg button:last-child { border-right: 0; }
.tl-seg button:hover { background: var(--panel); }
.tl-seg button[aria-pressed="true"] {
  background: var(--ploy-neutral-inverse-950); color: #fff;
}
.tl-seg button:focus-visible { outline: 2px solid var(--ploy-accent-primary); outline-offset: -2px; }
@media (max-width: 520px) { .tl-seg { width: 100%; } .tl-seg button { flex: 1; } }