/* Roomz / Playroom — shared foundations. Keep geometry out of motion. */
:root {
  color-scheme: dark;
  --canvas: #15120f;
  --paper: #241e18;
  --ink: #f5eadb;
  --muted: #c4b39c;
  --line: #514331;
  --lavender: #352a20;
  --purple: #d6b985;
  --coral: #493023;
  --mint: #303a25;
  --danger: #ffb4b2;
  --surface-soft: #30271f;
  --action: #e5d3b5;
  --on-action: #241a11;
  --success: #b4dfc5;
  --layer-photo: 0;
  --layer-marker: 4;
  --layer-controls: 8;
  --layer-navigation: 12;
  --layer-status: 15;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
  --radius-sm: .75rem;
  --radius-md: 1.25rem;
  --radius-lg: 2rem;
  --shadow-float: 0 8px 28px #0005, 0 2px 5px #0003;
  --shadow-sheet: 0 18px 70px #0009;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
  --ease-drawer: cubic-bezier(.32, .72, 0, 1);
  --motion-quick: 120ms;
  --motion-base: 220ms;
  --motion-slow: 280ms;
  --ease-smooth: var(--ease-out);
  --ease-spring: var(--ease-out);
  --ease-settle: var(--ease-drawer);
  font-family: var(--sans);
  font-size: 16px;
}
button, input, select, textarea { font: inherit; }
button, a, input, select { -webkit-tap-highlight-color: transparent; }
button { touch-action: manipulation; cursor: pointer; }
button:disabled { cursor: not-allowed; }
button, .ui-button { transition: transform var(--motion-quick) var(--ease-out), background-color var(--motion-quick) ease, color var(--motion-quick) ease, opacity var(--motion-quick) ease; }
button:not(:disabled):active, .ui-button:active { transform: scale(.97); }
:focus-visible { outline: 3px solid var(--purple) !important; outline-offset: 4px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; clip-path: inset(50%); overflow: hidden; white-space: nowrap; border: 0; }
.ui-button { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 48px; border: 0; border-radius: 999px; background: var(--action); color: var(--on-action); padding: .75rem 1.25rem; font-weight: 650; text-decoration: none; }
.ui-button.secondary { background: var(--lavender); color: var(--ink); }
.ui-icon { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
[aria-busy="true"] { cursor: progress; }
button[aria-busy="true"] { position: relative; pointer-events: none; }
button[aria-busy="true"]::after { content: ""; position: absolute; top: calc(50% - 8px); right: .875rem; width: 16px; height: 16px; box-sizing: border-box; margin: 0; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: ui-spin .7s linear infinite; pointer-events: none; }
.ui-skeleton { background: #e9e5ef; border-radius: var(--radius-md); animation: ui-breathe 1.2s ease-in-out infinite alternate; }
.ui-toast { position: fixed; z-index: 300; left: 50%; bottom: calc(1.25rem + env(safe-area-inset-bottom)); width: max-content; max-width: calc(100% - 2rem); padding: .875rem 1.25rem; border-radius: 999px; background: var(--ink); color: white; box-shadow: var(--shadow-float); font-size: .875rem; opacity: 0; transform: translate(-50%, 12px); pointer-events: none; transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out); }
.ui-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.ui-inline-error { color: var(--danger); padding: .75rem 1rem; background: #462c31; border-radius: var(--radius-sm); font-size: .875rem; }
.ui-tip { position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%); white-space: nowrap; padding: .45rem .65rem; border-radius: .6rem; background: var(--ink); color: #fff; font-size: .7rem; opacity: 0; pointer-events: none; transition: opacity 125ms var(--ease-out); }
button:focus-visible > .ui-tip { opacity: 1; }
@media (hover:hover) and (pointer:fine) { button:hover > .ui-tip { opacity: 1; } .ui-button:hover { background: var(--purple); color: white; } }
@keyframes ui-spin { to { transform: rotate(360deg); } }
@keyframes ui-breathe { to { opacity: .55; } }
@media (prefers-reduced-transparency:reduce) { .mobile-topbar, .sidebar, .mobile-room-action { backdrop-filter: none !important; background: var(--paper) !important; } }
@media (prefers-contrast:more) { :root { --muted: #f0dfc7; --line: #c4a878; } button, input, select { border: 1px solid currentColor !important; } }
@media (prefers-reduced-motion:reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition-property: opacity, color, background-color !important; transition-duration: 100ms !important; }
  button:active { transform: none !important; }
  button[aria-busy="true"]::after { border-right-color: currentColor; opacity: .6; }
}
.ui-toast,.ui-tip { background:var(--paper); color:var(--ink); border:1px solid var(--line); }
.ui-skeleton { background:var(--surface-soft); }
@media(hover:hover) and (pointer:fine) { .ui-button:hover { background:var(--action); color:var(--on-action); } }