/**
 * Platform primitives.
 *
 * Every class here is `pd-` prefixed. Game stylesheets must not restyle these;
 * if a game needs a different button, it declares its own inside its own
 * namespace. That keeps a game liftable into a standalone project.
 */

/* --- Buttons ------------------------------------------------------------ */

.pd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 15px 18px;
  border: none;
  border-radius: var(--pd-radius-pill);
  font-family: var(--pd-font-body);
  font-weight: var(--pd-weight-black);
  font-size: 17px;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  touch-action: manipulation;
  transition:
    background var(--pd-transition-base),
    color var(--pd-transition-base),
    border-color var(--pd-transition-base),
    box-shadow var(--pd-transition-base),
    transform 0.06s ease;
}

.pd-btn:active {
  transform: scale(0.98);
}

.pd-btn svg {
  width: 20px;
  height: 20px;
  vertical-align: middle;
}

.pd-btn-primary {
  background: var(--pd-colour-accent);
  color: #fff;
  box-shadow: 0 8px 20px var(--pd-colour-accent-shadow);
}

.pd-btn-secondary {
  padding: 13px 36px;
  background: transparent;
  color: var(--pd-colour-text);
  border: 3px solid var(--pd-colour-border-strong);
}

.pd-btn-quiet {
  background: transparent;
  color: var(--pd-colour-muted);
  font-weight: var(--pd-weight-bold);
  font-size: 16px;
  padding: 10px 16px;
}

/* Hover invert only where a real pointer exists — on touch it sticks. */
@media (hover: hover) and (pointer: fine) {
  .pd-btn-primary:hover {
    background: var(--pd-colour-accent-hover);
  }
  .pd-btn-secondary:hover {
    background: var(--pd-colour-border-strong);
    color: #fff;
  }
  .pd-btn-quiet:hover {
    color: var(--pd-colour-text);
  }
}

@media (hover: none), (pointer: coarse) {
  .pd-btn-secondary:active {
    background: var(--pd-colour-press);
    transform: scale(0.97);
  }
}

/* --- Modal -------------------------------------------------------------- */

html.pd-modal-open,
html.pd-modal-open body,
body.pd-modal-open {
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
}

.pd-modal {
  position: fixed;
  inset: 0;
  z-index: var(--pd-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(16px, env(safe-area-inset-top, 0px)) 16px
    max(16px, env(safe-area-inset-bottom, 0px));
  background: var(--pd-colour-backdrop);
  opacity: 0;
  transition: opacity var(--pd-transition-base);
}

.pd-modal[hidden] {
  display: none;
}

.pd-modal.is-open {
  opacity: 1;
}

.pd-modal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 420px;
  max-height: 100%;
  /* The card clips; only .pd-modal-scroll moves. This is what stops iOS
     rubber-banding the page behind an open modal. */
  overflow: hidden;
  overscroll-behavior: none;
  background: var(--pd-colour-surface);
  border-radius: var(--pd-radius-large);
  box-shadow: var(--pd-shadow-modal);
  transform: translateY(12px);
  transition: transform var(--pd-transition-base);
}

.pd-modal.is-open .pd-modal-card {
  transform: none;
}

.pd-modal-scroll {
  flex: 1 1 auto;
  min-height: 0;
  padding: var(--pd-spacing-6) var(--pd-spacing-5) var(--pd-spacing-5);
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.pd-modal-scroll::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.pd-modal-x {
  position: absolute;
  top: 10px;
  right: 12px;
  z-index: 1;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: transparent;
  border: none;
  border-radius: 50%;
  font-size: 28px;
  line-height: 1;
  color: var(--pd-colour-muted);
  transition: background var(--pd-transition-base), color var(--pd-transition-base);
}

.pd-modal-x:hover {
  background: var(--pd-colour-press);
  color: var(--pd-colour-text);
}

.pd-modal-title {
  margin: 0 0 var(--pd-spacing-3);
  font-family: var(--pd-font-heading);
  font-weight: var(--pd-weight-black);
  font-size: 1.6rem;
  line-height: 1.15;
  color: var(--pd-colour-heading);
}

.pd-modal-message {
  margin: 0;
  line-height: 1.5;
  color: var(--pd-colour-text);
}

.pd-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--pd-spacing-3);
  justify-content: center;
  margin-top: var(--pd-spacing-5);
}

/* --- Toast -------------------------------------------------------------- */

.pd-toast-host {
  position: fixed;
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom, 0px));
  z-index: var(--pd-z-toast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--pd-spacing-2);
  transform: translateX(-50%);
  pointer-events: none;
}

.pd-toast {
  padding: 12px 18px;
  border-radius: var(--pd-radius-pill);
  background: var(--pd-colour-text);
  color: #fff;
  font-weight: var(--pd-weight-bold);
  font-size: 15px;
  box-shadow: var(--pd-shadow-card);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--pd-transition-base), transform var(--pd-transition-base);
}

.pd-toast.is-visible {
  opacity: 1;
  transform: none;
}

.pd-toast-success {
  background: var(--pd-colour-accent);
}

.pd-toast-error {
  background: var(--pd-colour-danger);
}

/* --- Subscribe gate ----------------------------------------------------- */

/* Sits above the archive so it can gate a calendar that is already open. */
.pd-modal-gate {
  z-index: var(--pd-z-gate);
}

.pd-gate {
  text-align: center;
}

.pd-gate-eyebrow {
  margin: 0 0 var(--pd-spacing-2);
  font-size: 12px;
  font-weight: var(--pd-weight-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pd-colour-muted);
}

.pd-gate-title {
  margin: 0 0 var(--pd-spacing-3);
  font-family: var(--pd-font-heading);
  font-weight: var(--pd-weight-black);
  font-size: 1.5rem;
  color: var(--pd-colour-heading);
}

.pd-gate-body {
  margin: 0 0 var(--pd-spacing-5);
  line-height: 1.5;
  color: var(--pd-colour-muted);
}

.pd-gate-cta {
  width: 100%;
}

.pd-gate-dismiss {
  margin-top: var(--pd-spacing-2);
  width: 100%;
}

/* --- Archive calendar --------------------------------------------------- */

.pd-modal-archive .pd-modal-card {
  max-width: 460px;
}

.pd-archive-nav {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: var(--pd-spacing-2);
  margin-bottom: var(--pd-spacing-4);
}

.pd-archive-month {
  text-align: center;
  font-weight: var(--pd-weight-bold);
  font-size: 1.05rem;
}

.pd-archive-nav-btn {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid var(--pd-colour-border);
  border-radius: 50%;
  font-size: 22px;
  line-height: 1;
}

.pd-archive-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.pd-archive-dow,
.pd-archive-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}

.pd-archive-dow {
  margin-bottom: 6px;
}

.pd-archive-dow span {
  text-align: center;
  font-size: 11px;
  font-weight: var(--pd-weight-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--pd-colour-muted);
}

.pd-archive-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  aspect-ratio: 1;
  padding: 2px;
  background: var(--pd-colour-background);
  border: 1px solid var(--pd-colour-border);
  border-radius: var(--pd-radius-small);
  font-family: var(--pd-font-body);
}

.pd-archive-cell.is-pad {
  background: transparent;
  border-color: transparent;
}

.pd-archive-cell.is-disabled {
  opacity: 0.35;
  cursor: default;
}

.pd-archive-cell.is-done {
  background: var(--pd-colour-accent);
  border-color: var(--pd-colour-accent);
  color: #fff;
}

.pd-archive-cell.is-progress {
  border-color: var(--pd-colour-text);
}

.pd-archive-cell.is-failed {
  border-color: var(--pd-colour-danger);
  color: var(--pd-colour-danger);
}

.pd-archive-cell.is-today {
  outline: 2px solid var(--pd-colour-text);
  outline-offset: 1px;
}

.pd-archive-num {
  font-weight: var(--pd-weight-bold);
  font-size: 14px;
  line-height: 1;
}

.pd-archive-score {
  font-size: 9px;
  font-weight: var(--pd-weight-bold);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  opacity: 0.75;
}

/* --- Error state -------------------------------------------------------- */

.pd-error-state {
  max-width: var(--pd-reading-width);
  margin: var(--pd-spacing-8) auto;
  padding: var(--pd-spacing-5);
  text-align: center;
}

.pd-error-title {
  margin: 0 0 var(--pd-spacing-3);
  font-family: var(--pd-font-heading);
  font-weight: var(--pd-weight-black);
  font-size: 1.5rem;
}

.pd-error-body {
  margin: 0 0 var(--pd-spacing-5);
  color: var(--pd-colour-muted);
  line-height: 1.5;
}

.pd-error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--pd-spacing-3);
  justify-content: center;
}

/* --- Demo skip ---------------------------------------------------------- */

.pd-demo-skip {
  display: block;
  margin: var(--pd-spacing-5) auto;
  padding: 10px 18px;
  background: var(--pd-colour-danger);
  color: #fff;
  border: none;
  border-radius: var(--pd-radius-pill);
  font-weight: var(--pd-weight-bold);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}