/* ============================================================
   RetroLabs — shared design system
   Roadmap #11: every colour/shape is a CSS variable, so a theme
   pack (#16) can restyle the whole site without touching markup
   or functionality.
   ============================================================ */

:root {
  /* Palette — overridden per theme pack */
  --bg:            #0b1020;
  --bg-2:          #121933;
  --surface:       rgba(255, 255, 255, 0.04);
  --surface-2:     rgba(255, 255, 255, 0.07);
  --border:        rgba(255, 255, 255, 0.12);
  --text:          #e8ecf8;
  --text-dim:      #9aa6c4;
  --accent:        #00ffcc;
  --accent-2:      #7c5cff;
  --danger:        #ff5c7a;
  --warning:       #ffb454;
  --success:       #4ade80;

  /* Currency colours (#29) */
  --rc:            #f5c542;
  --rg:            #7ee0ff;

  /* Rarity colours */
  --r-common:      #9e9e9e;
  --r-rare:        #4fc3f7;
  --r-epic:        #bd93f9;
  --r-legendary:   #ffb300;
  --r-mythic:      #ff79c6;

  /* Shape & motion */
  --radius:        14px;
  --radius-lg:     22px;
  --gap:           16px;
  --shadow:        0 18px 40px -18px rgba(0, 0, 0, 0.75);
  --glow:          0 0 24px -4px var(--accent);
  --speed:         180ms;
  --ease:          cubic-bezier(0.22, 1, 0.36, 1);

  --font-display:  'Press Start 2P', 'Trebuchet MS', system-ui, sans-serif;
  --font-body:     'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

/* Respect users who prefer less motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Base ---------- */
.rl-scope, body.rl-body {
  background:
    radial-gradient(1100px 600px at 15% -10%, rgba(124, 92, 255, 0.16), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(0, 255, 204, 0.10), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
}

/* ---------- Image fallback (#images) ----------
   Any <img> that fails gets .rl-img-failed from retro-shell.js and
   renders as a branded tile instead of a broken-file icon.        */
.rl-img-failed {
  background:
    linear-gradient(135deg, rgba(124, 92, 255, 0.35), rgba(0, 255, 204, 0.22)),
    var(--bg-2) !important;
  border: 1px dashed var(--border) !important;
  border-radius: var(--radius);
  object-fit: cover;
  min-height: 64px;
  position: relative;
}
.rl-img-failed::after {
  content: attr(data-fallback-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 8px;
  font-family: var(--font-display);
  font-size: clamp(8px, 1.6vw, 12px);
  line-height: 1.6;
  color: var(--text);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}

/* ---------- Layout ---------- */
.rl-container { width: min(1180px, 92vw); margin-inline: auto; }
.rl-grid { display: grid; gap: var(--gap); }
.rl-grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.rl-grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.rl-grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.rl-row { display: flex; gap: var(--gap); align-items: center; flex-wrap: wrap; }
.rl-spacer { flex: 1 1 auto; }

/* ---------- Card ---------- */
.rl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  transition: transform var(--speed) var(--ease), border-color var(--speed) var(--ease);
}
.rl-card:hover { border-color: color-mix(in oklab, var(--accent) 45%, var(--border)); }
.rl-card.interactive:hover { transform: translateY(-3px); }
.rl-card__title {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.5px;
  margin: 0 0 10px;
  color: var(--accent);
}

/* ---------- Buttons ---------- */
.rl-btn {
  --btn-bg: var(--surface-2);
  --btn-fg: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  min-height: 44px;                 /* touch target */
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font: 600 14px/1 var(--font-body);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--speed) var(--ease), filter var(--speed) var(--ease);
}
.rl-btn:hover { filter: brightness(1.15); transform: translateY(-1px); }
.rl-btn:active { transform: translateY(0) scale(0.985); }
.rl-btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.rl-btn[disabled], .rl-btn[aria-busy="true"] { opacity: 0.55; pointer-events: none; }

.rl-btn--primary {
  --btn-bg: linear-gradient(135deg, var(--accent), var(--accent-2));
  --btn-fg: #06121a;
  border-color: transparent;
  font-weight: 800;
  box-shadow: var(--glow);
}
.rl-btn--ghost { --btn-bg: transparent; }
.rl-btn--danger { --btn-bg: color-mix(in oklab, var(--danger) 25%, transparent); }
.rl-btn--block { width: 100%; }

/* Provider sign-in buttons (#1) */
/* box-sizing is asserted here because host pages set their own global rules;
   without it the padding pushes these buttons outside their container. */
.rl-btn--provider {
  justify-content: flex-start;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  font-weight: 700;
}
#rlProviderBlock, #rlProviderBlock * { box-sizing: border-box; max-width: 100%; }
#rlProviderBlock { width: 100%; }
.rl-btn--google  { background: #fff; color: #1f1f1f; border-color: #dadce0; }
.rl-btn--phantom { background: linear-gradient(135deg, #7c3aed, #60a5fa); color: #fff; border-color: transparent; }
.rl-provider-icon { width: 20px; height: 20px; flex: 0 0 20px; }

/* ---------- Forms ---------- */
.rl-field { display: grid; gap: 6px; margin-bottom: 14px; }
.rl-label { font-size: 13px; color: var(--text-dim); font-weight: 600; }
.rl-input, .rl-select, .rl-textarea {
  width: 100%;
  padding: 12px 14px;
  min-height: 44px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  font: 400 15px/1.4 var(--font-body);
  transition: border-color var(--speed) var(--ease);
}
.rl-input:focus, .rl-select:focus, .rl-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 22%, transparent);
}
.rl-input[aria-invalid="true"] { border-color: var(--danger); }
.rl-hint { font-size: 12px; color: var(--text-dim); }
.rl-error { font-size: 13px; color: var(--danger); min-height: 1em; }

.rl-divider {
  display: flex; align-items: center; gap: 12px;
  color: var(--text-dim); font-size: 12px; margin: 18px 0;
}
.rl-divider::before, .rl-divider::after {
  content: ""; flex: 1; height: 1px; background: var(--border);
}

/* ---------- Badges & chips ---------- */
.rl-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 700;
  background: var(--surface-2); border: 1px solid var(--border);
}
.rl-badge--rc { color: var(--rc); border-color: color-mix(in oklab, var(--rc) 40%, transparent); }
.rl-badge--rg { color: var(--rg); border-color: color-mix(in oklab, var(--rg) 40%, transparent); }
.rarity-common    { color: var(--r-common); }
.rarity-rare      { color: var(--r-rare); }
.rarity-epic      { color: var(--r-epic); }
.rarity-legendary { color: var(--r-legendary); }
.rarity-mythic    { color: var(--r-mythic); }

/* ---------- Toast ---------- */
.rl-toast-host {
  position: fixed; right: 18px; bottom: 18px;
  display: grid; gap: 10px; z-index: 9999; pointer-events: none;
}
.rl-toast {
  pointer-events: auto;
  min-width: 240px; max-width: 380px;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
  animation: rl-slide-in 260ms var(--ease);
}
.rl-toast--error   { border-left-color: var(--danger); }
.rl-toast--success { border-left-color: var(--success); }
@keyframes rl-slide-in { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: none; } }

/* ---------- Skeleton loading ---------- */
.rl-skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface-2) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: rl-shimmer 1.4s infinite;
  border-radius: var(--radius);
  min-height: 16px;
}
@keyframes rl-shimmer { to { background-position: -200% 0; } }

/* ---------- Accessibility ---------- */
.rl-visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.rl-skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 10000;
  padding: 12px 18px; background: var(--accent); color: #06121a;
  font-weight: 700; border-radius: 0 0 var(--radius) 0;
}
.rl-skip-link:focus { left: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  :root { --gap: 12px; --radius-lg: 16px; }
  .rl-card { padding: 14px; }
  .rl-btn { width: 100%; }
  .rl-row { gap: 10px; }
}