/* poe-arcade — shared/poe.css
 * The COMMON CHROME ONLY. Deliberately minimal.
 *
 * Every game owns its own art direction: its own palette, typography, buttons,
 * title screens and motion. Nothing in this file should homogenize that.
 * What lives here is only what must be identical across the cabinet:
 *   1. the reset,  2. neutral overridable custom properties,
 *   3. the back-to-launcher link,  4. the rotate hint,  5. the focus ring.
 *
 * Link with: <link rel="stylesheet" href="/shared/poe.css">
 */

/* ---------- 1. reset ---------------------------------------------------- */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
}

body {
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
}

/* ---------- 2. neutral custom properties -------------------------------- */
/* Starting points, not a theme. Override them freely inside your own game. */

:root {
  --ink:   #0a0908;
  --bone:  #e8e2d4;
  --blood: #7a0f12;
  --brass: #b08d3f;
}

/* ---------- 3. .poe-back ------------------------------------------------ */
/* A small fixed back-to-launcher link. Injected by poe.js `mountBack()`.
 * Legible on both dark and light game backgrounds: a semi-transparent dark
 * plate plus a backdrop blur, so it never disappears into the artwork.
 * Sits inside the safe area on notched phones and keeps a >=44x44px hit area. */

.poe-back {
  position: fixed;
  z-index: 2147483000;
  top:  calc(env(safe-area-inset-top,  0px) + 10px);
  left: calc(env(safe-area-inset-left, 0px) + 10px);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 14px;

  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-decoration: none;

  color: rgba(255, 255, 255, 0.92);
  background: rgba(10, 9, 8, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  -webkit-backdrop-filter: blur(8px) saturate(1.2);
  backdrop-filter: blur(8px) saturate(1.2);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);

  opacity: 0.38;
  transition: opacity 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.poe-back:hover,
.poe-back:focus-visible,
.poe-back:active {
  opacity: 1;
  background: rgba(10, 9, 8, 0.82);
  border-color: rgba(255, 255, 255, 0.34);
}

/* Touch devices have no hover, so never leave it near-invisible there. */
@media (hover: none) {
  .poe-back { opacity: 0.66; }
}

/* ---------- 4. .poe-rotate-hint ----------------------------------------- */
/* For games that genuinely need landscape. Add the element, and it will show
 * itself only in portrait on a narrow screen. Hidden everywhere else. */

.poe-rotate-hint { display: none; }

@media (orientation: portrait) and (max-width: 700px) {
  .poe-rotate-hint {
    position: fixed;
    inset: 0;
    z-index: 2147483100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 24px calc(24px + env(safe-area-inset-right, 0px))
             24px calc(24px + env(safe-area-inset-left,  0px));
    text-align: center;
    background: #000;
    color: rgba(232, 226, 212, 0.9);
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.5;
    letter-spacing: 0.04em;
  }

  .poe-rotate-hint::before {
    content: "";
    width: 46px;
    height: 74px;
    border: 2px solid currentColor;
    border-radius: 8px;
    opacity: 0.7;
    animation: poe-rotate-nudge 2.6s ease-in-out infinite;
  }
}

@keyframes poe-rotate-nudge {
  0%, 40%  { transform: rotate(0deg); }
  60%, 90% { transform: rotate(-90deg); }
  100%     { transform: rotate(-90deg); }
}

@media (prefers-reduced-motion: reduce) {
  .poe-rotate-hint::before { animation: none; transform: rotate(-90deg); }
}

/* ---------- 5. shared focus ring ---------------------------------------- */

:focus-visible {
  outline: 2px solid rgba(232, 226, 212, 0.85);
  outline-offset: 2px;
  border-radius: 3px;
}

/* Utility: visually hidden but available to screen readers. */
.poe-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}