/* ---------- Layout ----------
 * Imagine palette routes through Heyming OS brand tokens. Uses brand
 * violet for the primary accent so it reads as part of the OS family
 * (matches chat/), but with a warmer paint-like edge on the canvas
 * frame.
 */
:root {
  --imagine-bg: var(--surface-0);
  --imagine-bg-2: var(--surface-1);
  --imagine-fg: var(--text-1);
  --imagine-fg-dim: var(--text-2);
  --imagine-accent: var(--accent-primary);
  --imagine-accent-2: var(--accent-primary-hover);
  --imagine-border: var(--hairline);
  --imagine-error: var(--danger);
  --imagine-success: var(--success);
  --imagine-warning: var(--warning);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--imagine-bg);
  color: var(--imagine-fg);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
}

.imagine-app {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  height: 100vh;
  max-width: 960px;
  margin: 0 auto;
}

/* ---------- Header ---------- */
.imagine-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--imagine-border);
  background: color-mix(in srgb, var(--surface-0) 85%, transparent);
  backdrop-filter: blur(8px);
}

.imagine-title {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  padding-left: 120px; /* clearance for the global back button */
}

.imagine-emoji {
  font-size: 26px;
  filter: drop-shadow(0 0 8px var(--accent-primary-soft));
}

.imagine-title-text h1 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.imagine-title-text p {
  margin: 0;
  font-size: 12px;
  color: var(--imagine-fg-dim);
}

@media (max-width: 640px) {
  .imagine-header {
    flex-wrap: wrap;
  }
  .imagine-title {
    padding-left: 100px;
  }
}

/* ---------- Unsupported banner ---------- */
.imagine-unsupported {
  margin: 14px 18px 0;
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--imagine-error) 35%, transparent);
  background: color-mix(in srgb, var(--imagine-error) 10%, transparent);
  border-radius: 10px;
  color: var(--imagine-fg);
  font-size: 14px;
}

.imagine-unsupported strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
}

.imagine-unsupported-detail {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--imagine-fg-dim);
  white-space: pre-wrap;
}

.imagine-unsupported-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--imagine-fg-dim);
}

/* ---------- Main ---------- */
.imagine-main {
  overflow-y: auto;
  padding: 24px 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ---------- Install card ----------
 * `:not([hidden])` matters here: the rule below sets `display: flex`,
 * which has equal specificity to the UA's `[hidden] { display: none }`
 * and (because author stylesheets win ties) would keep the card on
 * screen even after JS sets `el.hidden = true`. Same trick the chat
 * app uses for its drop overlay.
 */
.imagine-install:not([hidden]) {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 28px 24px;
  border: 1px dashed color-mix(in srgb, var(--imagine-accent) 40%, transparent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--imagine-accent) 5%, transparent);
  max-width: 540px;
  margin: 0 auto;
}

.imagine-install-emoji {
  font-size: 40px;
  line-height: 1;
  margin-bottom: 8px;
}

.imagine-install-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
}

.imagine-install-body {
  margin: 0 0 16px;
  font-size: 14px;
  color: var(--imagine-fg-dim);
  line-height: 1.55;
}

.imagine-install-btn {
  background: var(--imagine-accent);
  color: var(--text-on-accent);
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 120ms ease, transform 80ms ease;
}

.imagine-install-btn:hover {
  background: var(--imagine-accent-2);
}

.imagine-install-btn:active {
  transform: translateY(1px);
}

.imagine-install-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.imagine-install-hint {
  margin: 14px 0 0;
  font-size: 12px;
  color: var(--imagine-fg-dim);
  max-width: 420px;
}

/* ---------- Output pane ---------- */
.imagine-output {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.imagine-output-empty {
  text-align: center;
  padding: 40px 18px;
  border: 1px solid var(--imagine-border);
  border-radius: 14px;
  background: var(--imagine-bg-2);
  width: 100%;
  max-width: 540px;
}

.imagine-output-title {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 600;
}

.imagine-output-sub {
  margin: 0 0 18px;
  font-size: 13px;
  color: var(--imagine-fg-dim);
}

.imagine-suggestions {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.imagine-suggestions button {
  background: transparent;
  color: var(--imagine-fg);
  border: 1px solid var(--imagine-border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}

.imagine-suggestions button:hover {
  background: var(--imagine-bg-2);
  border-color: color-mix(in srgb, var(--imagine-accent) 50%, transparent);
}

.imagine-current:not([hidden]) {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 560px;
}

.imagine-current {
  margin: 0;
}

.imagine-canvas-frame {
  position: relative;
  width: 100%;
  max-width: 512px;
  aspect-ratio: 1 / 1;
  background:
    /* checker pattern as a "no image yet" placeholder */ linear-gradient(
        45deg,
        var(--imagine-bg-2) 25%,
        transparent 25%
      )
      0 0 / 24px 24px,
    linear-gradient(-45deg, var(--imagine-bg-2) 25%, transparent 25%) 0 12px / 24px 24px,
    linear-gradient(45deg, transparent 75%, var(--imagine-bg-2) 75%) 12px -12px / 24px 24px,
    linear-gradient(-45deg, transparent 75%, var(--imagine-bg-2) 75%) -12px 0 / 24px 24px,
    var(--imagine-bg);
  border: 1px solid var(--imagine-border);
  border-radius: 12px;
  overflow: hidden;
}

.imagine-current-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.imagine-progress-overlay:not([hidden]) {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: color-mix(in srgb, var(--surface-0) 75%, transparent);
  backdrop-filter: blur(2px);
}

.imagine-progress-bar {
  width: 70%;
  height: 6px;
  background: var(--imagine-bg-2);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--imagine-border);
}

.imagine-progress-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--imagine-accent),
    color-mix(in srgb, var(--imagine-accent) 60%, var(--accent-secondary, #f0f))
  );
  transition: width 200ms ease;
}

.imagine-progress-text {
  margin: 0;
  font-size: 13px;
  color: var(--imagine-fg-dim);
  font-variant-numeric: tabular-nums;
}

.imagine-current-caption {
  margin: 0;
  text-align: center;
  font-size: 13px;
  color: var(--imagine-fg-dim);
  max-width: 100%;
  word-break: break-word;
}

.imagine-current-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ---------- History strip ---------- */
.imagine-history {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
}

.imagine-history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.imagine-history-title {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--imagine-fg-dim);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.imagine-history-clear-all {
  background: transparent;
  border: 1px solid var(--imagine-border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--imagine-fg-dim);
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
}

.imagine-history-clear-all:hover,
.imagine-history-clear-all:focus-visible {
  color: var(--imagine-error, #d97706);
  border-color: color-mix(in srgb, var(--imagine-error, #d97706) 50%, var(--imagine-border));
  background: color-mix(in srgb, var(--imagine-error, #d97706) 8%, transparent);
}

.imagine-history-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 8px;
}

/* Cell wraps both the thumbnail-button and the delete-X button.
 * They have to be siblings (a button can't be nested inside another
 * button) so the cell provides the positioning context for the X. */
.imagine-history-cell {
  position: relative;
}

.imagine-history-item {
  position: relative;
  background: var(--imagine-bg-2);
  border: 1px solid var(--imagine-border);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1 / 1;
  padding: 0;
  width: 100%;
  display: block;
}

.imagine-history-item:hover {
  border-color: color-mix(in srgb, var(--imagine-accent) 50%, transparent);
}

.imagine-history-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.imagine-history-item-prompt {
  position: absolute;
  inset: auto 0 0;
  padding: 4px 6px;
  background: color-mix(in srgb, var(--surface-0) 80%, transparent);
  font-size: 10px;
  color: var(--imagine-fg-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Delete-X overlay. Subtle by default so it doesn't fight with the
 * thumbnail; brightens on cell hover or its own focus/hover for
 * touch users where there's no hover affordance. */
.imagine-history-delete {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--imagine-border) 60%, transparent);
  background: color-mix(in srgb, var(--surface-0) 75%, transparent);
  color: var(--imagine-fg);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity 120ms ease, background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.imagine-history-cell:hover .imagine-history-delete,
.imagine-history-cell:focus-within .imagine-history-delete,
.imagine-history-delete:focus-visible {
  opacity: 1;
}

.imagine-history-delete:hover,
.imagine-history-delete:focus-visible {
  background: color-mix(in srgb, var(--imagine-danger, #b03737) 80%, var(--surface-0));
  color: #fff;
  border-color: transparent;
}

/* Touch devices: keyboard/hover doesn't apply, so make the X always
 * visible (just dimmer) so the user can still find it. */
@media (hover: none) {
  .imagine-history-delete {
    opacity: 0.7;
  }
}

/* ---------- Composer ---------- */
.imagine-composer {
  border-top: 1px solid var(--imagine-border);
  padding: 12px 18px;
  background: color-mix(in srgb, var(--surface-0) 95%, transparent);
  backdrop-filter: blur(8px);
}

.imagine-composer-row {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  max-width: 720px;
  margin: 0 auto;
}

#imagine-prompt {
  flex: 1;
  min-width: 0;
  resize: none;
  font: inherit;
  font-family: var(--font-ui);
  background: var(--imagine-bg-2);
  color: var(--imagine-fg);
  border: 1px solid var(--imagine-border);
  border-radius: 10px;
  padding: 10px 12px;
  max-height: 160px;
  outline: none;
  transition: border-color 120ms ease;
}

#imagine-prompt:focus {
  border-color: color-mix(in srgb, var(--imagine-accent) 60%, transparent);
}

.imagine-composer-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.imagine-seed-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--imagine-bg-2);
  border: 1px solid var(--imagine-border);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 13px;
  color: var(--imagine-fg-dim);
}

/* Model picker — same pill cosmetics as the seed label so the row
 * reads as one cohesive control bar. The <select> drops native
 * styling and inherits color/font from the pill. */
.imagine-model-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--imagine-bg-2);
  border: 1px solid var(--imagine-border);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 13px;
  color: var(--imagine-fg-dim);
}

.imagine-model-label select {
  background: transparent;
  border: none;
  color: var(--imagine-fg);
  font: inherit;
  padding: 2px 4px;
  cursor: pointer;
}

.imagine-model-label select:focus {
  outline: 2px solid var(--imagine-accent);
  outline-offset: 1px;
  border-radius: 4px;
}

.imagine-model-label select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#imagine-seed {
  width: 90px;
  background: transparent;
  border: none;
  color: var(--imagine-fg);
  font: inherit;
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
}

#imagine-seed::-webkit-inner-spin-button,
#imagine-seed::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.imagine-btn-ghost {
  background: transparent;
  color: var(--imagine-fg);
  border: 1px solid var(--imagine-border);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: background 120ms ease;
}

.imagine-btn-ghost:hover {
  background: var(--imagine-bg-2);
}

.imagine-btn-ghost:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.imagine-btn-icon {
  padding: 6px 10px;
}

.imagine-generate-btn {
  background: var(--imagine-accent);
  color: var(--text-on-accent);
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 120ms ease;
}

.imagine-generate-btn:hover {
  background: var(--imagine-accent-2);
}

.imagine-generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Generate Random — same shape as Generate but visually secondary.
 * Sits next to it in the composer; clicking randomizes the seed
 * input then submits, so each press yields a different image. */
.imagine-generate-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--imagine-accent);
  border: 1px solid var(--imagine-accent);
}

.imagine-generate-btn-secondary:hover {
  background: color-mix(in srgb, var(--imagine-accent) 12%, transparent);
}

.imagine-stop-btn {
  background: var(--imagine-error);
  color: var(--text-on-accent);
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

@media (max-width: 640px) {
  .imagine-composer-row {
    flex-direction: column;
    align-items: stretch;
  }
  .imagine-composer-controls {
    justify-content: space-between;
  }
}

/* ---------- Notifications (toast stack) ----------
 * Same shape as chat/ — keeps the visual language consistent across
 * the two on-device-AI apps. */
.notify-stack {
  position: fixed;
  bottom: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
  pointer-events: none;
}

.notify {
  pointer-events: auto;
  padding: 10px 14px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface-2) 95%, transparent);
  border: 1px solid var(--imagine-border);
  color: var(--imagine-fg);
  font-size: 13px;
  max-width: 320px;
  box-shadow: var(--shadow-card);
}

.notify-success {
  border-color: color-mix(in srgb, var(--imagine-success) 50%, transparent);
}

.notify-error {
  border-color: color-mix(in srgb, var(--imagine-error) 50%, transparent);
}

.notify-warn {
  border-color: color-mix(in srgb, var(--imagine-warning) 50%, transparent);
}

.notify-close {
  background: transparent;
  border: none;
  color: var(--imagine-fg-dim);
  margin-left: 8px;
  cursor: pointer;
  font-size: 16px;
}

/* ---------- Modal (download dialog) ---------- */
.imagine-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--scrim);
  z-index: 10000;
}

.imagine-modal-box {
  background: var(--imagine-bg-2);
  border: 1px solid var(--imagine-border);
  border-radius: 12px;
  padding: 22px 26px;
  max-width: 440px;
  width: calc(100% - 32px);
  box-shadow: var(--shadow-modal);
}

.imagine-modal-box h2 {
  margin: 0 0 8px;
  font-size: 18px;
}

.imagine-modal-box p {
  margin: 0 0 16px;
  color: var(--imagine-fg-dim);
  font-size: 14px;
}

.imagine-modal-progress {
  height: 8px;
  background: var(--imagine-bg);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--imagine-border);
  margin-bottom: 12px;
}

.imagine-modal-progress-bar {
  width: 0%;
  height: 100%;
  background: var(--imagine-accent);
  transition: width 200ms ease;
}

.imagine-modal-hint {
  margin: 0;
  font-size: 12px;
  color: var(--imagine-fg-dim);
}

.imagine-modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.imagine-modal-actions button {
  background: transparent;
  border: 1px solid var(--imagine-border);
  color: var(--imagine-fg);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
}

.imagine-modal-actions button.imagine-modal-primary {
  background: var(--imagine-accent);
  color: var(--text-on-accent);
  border-color: var(--imagine-accent);
}