/*
  ShaanJaanSoni.com — Shared Game Shell & Component Styles
  Implements the shell bar, overlays/dialogs, buttons, HUD label, toast,
  and focus system described in Part III (§13–§16) and Appendix B.
  Depends on tokens.css being loaded first.
*/

/*
  Guarantee the `hidden` attribute always wins over a class-based
  `display` rule, regardless of cascade order in a game's own stylesheet.
  Without this, `el.hidden = true` silently does nothing whenever a class
  selector of equal specificity also sets `display` on the same element.
*/
[hidden] { display: none !important; }

/*
  Sitewide password gate (client-side only — this is a static site with no
  backend, so this is a soft deterrent against casual visitors/search
  engines, not real security; anyone who views source or disables JS can
  see through it). shared/gate.js adds/removes `sjs-locked` on <html> and
  builds the `.sjs-gate` overlay. This rule must load before first paint —
  shell.css is a render-blocking stylesheet in <head> on every page, so it
  does, in tandem with the inline script each page runs to set the class
  before the browser paints anything.
*/
html.sjs-locked body > :not(.sjs-gate) { display: none !important; }
.sjs-gate {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--sjs-z-modal, 900);
  align-items: center;
  justify-content: center;
  padding: var(--sjs-space-4);
  background: var(--sjs-color-bg);
}
html.sjs-locked .sjs-gate { display: flex; }
.sjs-gate-card {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sjs-space-3);
  padding: var(--sjs-space-8) var(--sjs-space-6);
  background: var(--sjs-color-surface);
  border: 1px solid var(--sjs-color-border);
  border-radius: var(--sjs-radius-lg);
  text-align: center;
}
.sjs-gate-mark { font-size: 2rem; line-height: 1; }
.sjs-gate-title {
  font: 700 var(--sjs-text-prominent) var(--sjs-font-display);
  color: var(--sjs-color-text);
  margin: 0;
}
.sjs-gate-sub {
  font: 400 var(--sjs-text-compact) var(--sjs-font-ui);
  color: var(--sjs-color-text-muted);
  margin: 0;
}
.sjs-gate-input {
  width: 100%;
  min-height: var(--sjs-control-standard);
  padding: 0 var(--sjs-space-4);
  border-radius: var(--sjs-radius-sm);
  border: 1px solid var(--sjs-color-border);
  background: var(--sjs-color-bg);
  color: var(--sjs-color-text);
  font: 500 var(--sjs-text-compact) var(--sjs-font-ui);
  text-align: center;
  letter-spacing: 0.08em;
}
.sjs-gate-input:focus-visible {
  outline: 2px solid var(--sjs-color-focus);
  outline-offset: 2px;
}
.sjs-gate-btn {
  width: 100%;
}
.sjs-gate-error {
  font: 500 var(--sjs-text-caption) var(--sjs-font-ui);
  color: var(--sjs-color-danger);
  margin: 0;
}
.sjs-gate-shake { animation: sjs-gate-shake 0.32s var(--sjs-ease-standard); }
@keyframes sjs-gate-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
@media (prefers-reduced-motion: reduce) {
  .sjs-gate-shake { animation: none; }
}

.sjs-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;
}

.sjs-skip-link {
  position: absolute;
  top: -48px;
  left: var(--sjs-space-3);
  z-index: var(--sjs-z-toast);
  background: var(--sjs-color-primary);
  color: var(--sjs-color-on-primary);
  padding: var(--sjs-space-2) var(--sjs-space-4);
  border-radius: var(--sjs-radius-sm);
  font: 600 var(--sjs-text-compact) var(--sjs-font-ui);
  text-decoration: none;
  transition: top var(--sjs-motion-ui) var(--sjs-ease-standard);
}
.sjs-skip-link:focus {
  top: var(--sjs-space-3);
}

/* ---------- Shell bar ---------- */
.sjs-shell-bar {
  position: sticky;
  top: 0;
  z-index: var(--sjs-z-sticky);
  display: flex;
  align-items: center;
  gap: var(--sjs-space-3);
  min-height: 60px;
  padding: var(--sjs-space-2) var(--sjs-space-4);
  background: color-mix(in srgb, var(--sjs-color-surface) 92%, transparent);
  border-bottom: 1px solid var(--sjs-color-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding-top: calc(var(--sjs-space-2) + env(safe-area-inset-top, 0px));
}

.sjs-shell-home {
  display: inline-flex;
  align-items: center;
  gap: var(--sjs-space-2);
  color: var(--sjs-color-text-muted);
  text-decoration: none;
  font: 600 var(--sjs-text-compact) var(--sjs-font-ui);
  padding: var(--sjs-space-2) var(--sjs-space-3);
  border-radius: var(--sjs-radius-sm);
  transition: color var(--sjs-motion-micro) var(--sjs-ease-standard),
              background var(--sjs-motion-micro) var(--sjs-ease-standard);
  flex: 0 0 auto;
}
.sjs-shell-home:hover { color: var(--sjs-color-text); background: var(--sjs-color-surface-raised); }
.sjs-shell-home svg { width: 20px; height: 20px; flex: 0 0 auto; }

.sjs-shell-title {
  font: 700 var(--sjs-text-prominent) var(--sjs-font-display);
  color: var(--sjs-color-text);
  letter-spacing: -0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 auto;
  min-width: 0;
}

.sjs-shell-controls {
  display: flex;
  align-items: center;
  gap: var(--sjs-space-2);
  flex: 0 0 auto;
}

.sjs-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--sjs-control-standard);
  height: var(--sjs-control-standard);
  border-radius: var(--sjs-radius-md);
  border: 1px solid var(--sjs-color-border);
  background: var(--sjs-color-surface-raised);
  color: var(--sjs-color-text);
  cursor: pointer;
  transition: border-color var(--sjs-motion-micro) var(--sjs-ease-standard),
              transform var(--sjs-motion-micro) var(--sjs-ease-standard),
              background var(--sjs-motion-micro) var(--sjs-ease-standard);
}
.sjs-icon-btn:hover { border-color: var(--sjs-color-border-strong); }
.sjs-icon-btn:active { transform: scale(0.94); }
.sjs-icon-btn[aria-pressed="true"] { color: var(--sjs-color-primary); border-color: var(--sjs-color-primary); }
.sjs-icon-btn svg { width: 20px; height: 20px; }

:focus-visible {
  outline: none;
  box-shadow: var(--sjs-focus-ring);
}
.sjs-icon-btn:focus-visible,
.sjs-btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--sjs-focus-ring);
}

/* ---------- Buttons ---------- */
.sjs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  gap: var(--sjs-space-2);
  height: var(--sjs-control-standard);
  padding: 0 var(--sjs-space-6);
  border-radius: var(--sjs-radius-pill);
  border: 1px solid transparent;
  font: 700 var(--sjs-text-compact) var(--sjs-font-ui);
  cursor: pointer;
  transition: transform var(--sjs-motion-micro) var(--sjs-ease-standard),
              filter var(--sjs-motion-micro) var(--sjs-ease-standard),
              border-color var(--sjs-motion-micro) var(--sjs-ease-standard),
              background var(--sjs-motion-micro) var(--sjs-ease-standard);
}
.sjs-btn:active { transform: scale(0.97); }

.sjs-btn-primary {
  background: var(--sjs-color-primary);
  color: var(--sjs-color-on-primary);
}
.sjs-btn-primary:hover { filter: brightness(1.08); }

.sjs-btn-secondary {
  background: transparent;
  border-color: var(--sjs-color-border-strong);
  color: var(--sjs-color-text);
}
.sjs-btn-secondary:hover { background: var(--sjs-color-surface-raised); }

.sjs-btn-quiet {
  background: transparent;
  color: var(--sjs-color-text-muted);
}
.sjs-btn-quiet:hover { color: var(--sjs-color-text); }

.sjs-btn-danger {
  background: var(--sjs-color-danger);
  color: #2b0a0a;
}
.sjs-btn-danger:hover { filter: brightness(1.08); }

.sjs-btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ---------- Overlay / Dialog ---------- */
.sjs-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--sjs-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sjs-space-4);
  background: var(--sjs-overlay-scrim);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--sjs-motion-ui) var(--sjs-ease-standard);
}
.sjs-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sjs-dialog {
  width: 100%;
  max-width: 440px;
  max-height: min(80vh, 640px);
  overflow-y: auto;
  background: var(--sjs-color-surface);
  border: 1px solid var(--sjs-color-border);
  border-radius: var(--sjs-radius-lg);
  box-shadow: var(--sjs-shadow-2);
  padding: var(--sjs-space-6);
  transform: translateY(12px) scale(0.98);
  transition: transform var(--sjs-motion-ui) var(--sjs-ease-standard);
}
.sjs-overlay.is-open .sjs-dialog { transform: translateY(0) scale(1); }

.sjs-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sjs-space-3);
  margin-bottom: var(--sjs-space-4);
}
.sjs-dialog-title {
  font: 700 var(--sjs-text-section) var(--sjs-font-display);
  color: var(--sjs-color-text);
}
.sjs-dialog-body {
  color: var(--sjs-color-text-muted);
  font: 400 var(--sjs-text-body) var(--sjs-font-ui);
  line-height: 1.6;
}
.sjs-dialog-body p + p { margin-top: var(--sjs-space-3); }
.sjs-dialog-body ul { margin: var(--sjs-space-3) 0 0; padding-left: 1.2em; }
.sjs-dialog-body li + li { margin-top: var(--sjs-space-2); }
.sjs-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--sjs-space-3);
  margin-top: var(--sjs-space-6);
}

.sjs-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--sjs-control-compact);
  height: var(--sjs-control-compact);
  border-radius: var(--sjs-radius-sm);
  border: none;
  background: transparent;
  color: var(--sjs-color-text-muted);
  cursor: pointer;
}
.sjs-close-btn:hover { color: var(--sjs-color-text); background: var(--sjs-color-surface-raised); }

/* ---------- Control key/objective row (Help panel) ---------- */
.sjs-controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sjs-space-2);
  margin-top: var(--sjs-space-4);
}
.sjs-key {
  display: inline-flex;
  align-items: center;
  gap: var(--sjs-space-2);
  padding: var(--sjs-space-2) var(--sjs-space-3);
  border-radius: var(--sjs-radius-sm);
  background: var(--sjs-color-surface-raised);
  border: 1px solid var(--sjs-color-border);
  font: 600 var(--sjs-text-caption) var(--sjs-font-ui);
  color: var(--sjs-color-text);
}

/* ---------- Toast ---------- */
.sjs-toast {
  position: fixed;
  left: 50%;
  bottom: var(--sjs-space-8);
  transform: translate(-50%, 12px);
  z-index: var(--sjs-z-toast);
  background: var(--sjs-color-surface-raised);
  border: 1px solid var(--sjs-color-border-strong);
  color: var(--sjs-color-text);
  padding: var(--sjs-space-3) var(--sjs-space-6);
  border-radius: var(--sjs-radius-pill);
  font: 600 var(--sjs-text-compact) var(--sjs-font-ui);
  box-shadow: var(--sjs-shadow-2);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--sjs-motion-ui) var(--sjs-ease-standard),
              transform var(--sjs-motion-ui) var(--sjs-ease-standard);
}
.sjs-toast.is-open { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Badges / HUD label ---------- */
.sjs-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sjs-space-1);
  padding: var(--sjs-space-1) var(--sjs-space-3);
  border-radius: var(--sjs-radius-pill);
  background: var(--sjs-color-surface-raised);
  color: var(--sjs-color-text-muted);
  font: 700 var(--sjs-text-caption) var(--sjs-font-ui);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.sjs-badge-best {
  color: #2c1c00;
  background: var(--sjs-color-warning);
}

.sjs-hud-label {
  font: 700 var(--sjs-text-compact) var(--sjs-font-ui);
  color: var(--sjs-color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.sjs-hud-value {
  font: 700 var(--sjs-text-section) var(--sjs-font-numeric);
  font-variant-numeric: tabular-nums;
  color: var(--sjs-color-text);
}

/* ---------- Paused state banner (in-stage) ---------- */
.sjs-paused-note {
  display: inline-flex;
  align-items: center;
  gap: var(--sjs-space-2);
  color: var(--sjs-color-text-muted);
  font: 600 var(--sjs-text-caption) var(--sjs-font-ui);
}

/* ---------- Orientation notice ---------- */
.sjs-orientation-notice {
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--sjs-space-3);
  padding: var(--sjs-space-8);
  color: var(--sjs-color-text-muted);
  font: 600 var(--sjs-text-body) var(--sjs-font-ui);
}

@media (prefers-reduced-motion: reduce) {
  .sjs-overlay, .sjs-dialog, .sjs-toast, .sjs-icon-btn, .sjs-btn, .sjs-skip-link {
    transition-duration: 0.01ms !important;
  }
}
