/* SrgArt Pine Creator — Mini App (attempt 3: stages 7-8).
   Tokens: dark-first palette with high contrast for mobile.
   Layout: mobile-first 320-430px, fluid up to 480px, capped at 720px.
   Motion: only transform/opacity, prefers-reduced-motion disables ambient.
   60 FPS budget: no expensive filters or shadow blurs (per AC-11/16).
   Animated properties: transform, opacity, color, background, border-color. */

:root {
  --bg: #0d1117;
  --bg-elev: #161b22;
  --bg-elev-2: #1c222b;
  --fg: #f0f6fc;
  --fg-mute: #8b949e;
  --fg-dim: #6e7681;
  --accent: #58a6ff;
  --accent-soft: #1f6feb;
  --ok: #3fb950;
  --warn: #d29922;
  --error: #f85149;
  --border: #30363d;
  --border-soft: #21262d;
  --code-bg: #0a0d12;
  --code-fg: #c9d1d9;
  --code-keyword: #ff7b72;
  --code-string: #a5d6ff;
  --code-comment: #8b949e;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
  --radius: 12px;
  --radius-sm: 8px;
  --tap: 44px;
  /* 60 FPS budget: only animate transform / opacity. No filter blur. */
  --easing: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.45;
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

button, a {
  -webkit-tap-highlight-color: transparent;
}

.layout {
  display: grid;
  /* rows: header / core / stage-rail / activity / code-panel / final|error-state / footer */
  grid-template-rows: auto auto auto auto 1fr auto auto;
  gap: 12px;
  padding: 14px;
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
}

/* ---------- Header ---------- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 4px;
}

.header__left { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.header__right { display: flex; gap: 6px; align-items: center; }

.title {
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status {
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-elev);
  color: var(--fg-mute);
  font-size: 12px;
  border: 1px solid var(--border);
  white-space: nowrap;
}

.status[data-state="done"]   { color: var(--ok);   border-color: var(--ok); }
.status[data-state="error"]  { color: var(--error);border-color: var(--error); }
.status[data-state="ready"], .status[data-state="connected"], .status[data-state="connecting"] {
  color: var(--accent); border-color: var(--accent-soft);
}

.badge {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--fg-mute);
  background: var(--code-bg);
  white-space: nowrap;
}
.badge--muted { color: var(--fg-dim); }
.badge--ok    { color: var(--ok); border-color: var(--ok); }

/* ---------- Indicator Core ---------- */
.core {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 8px 8px;
}

.indicator-core {
  /* Mobile-first Core size. 200px on 375-430px viewports. */
  width: 200px;
  height: 200px;
  max-width: 70vw;
  color: var(--accent);
  transition: color 320ms var(--easing), transform 320ms var(--easing);
  will-change: transform;
}

/* State-driven colors (one composition that evolves) */
.layout[data-state="idle"]       .indicator-core { color: var(--fg-dim); }
.layout[data-state="preparing"]  .indicator-core { color: var(--accent); }
.layout[data-state="generating"] .indicator-core { color: var(--accent); }
.layout[data-state="verifying"]  .indicator-core { color: var(--warn); }
.layout[data-state="repairing"]  .indicator-core { color: var(--warn); }
.layout[data-state="success"]    .indicator-core { color: var(--ok); }
.layout[data-state="error"]      .indicator-core { color: var(--error); }

/* Ambient ring rotation: only when state is preparing/generating/verifying/repairing.
   Transform-only — 60 FPS friendly. */
.core-ring { transform-origin: 100px 100px; }

.layout[data-state="preparing"]  .core-ring--outer,
.layout[data-state="generating"] .core-ring--outer { animation: spin 4s linear infinite; }
.layout[data-state="verifying"]  .core-ring--outer,
.layout[data-state="repairing"]  .core-ring--outer { animation: spin 3s linear infinite reverse; }
.layout[data-state="preparing"]  .core-ring--middle,
.layout[data-state="generating"] .core-ring--middle { animation: spin 7s linear infinite reverse; }
.layout[data-state="verifying"]  .core-ring--middle,
.layout[data-state="repairing"]  .core-ring--middle { animation: spin 5s linear infinite; }

/* Ambient dots — pulse + translate. Visible only in active states. */
.core-glow { opacity: 0; transition: opacity 320ms var(--easing); }
.layout[data-state="preparing"]  .core-glow,
.layout[data-state="generating"] .core-glow,
.layout[data-state="verifying"]  .core-glow,
.layout[data-state="repairing"]  .core-glow { opacity: 1; }

.core-dot { fill: currentColor; opacity: 0.0; transition: opacity 320ms var(--easing); transform-origin: 100px 100px; }
.layout[data-state="preparing"]  .core-dot,
.layout[data-state="generating"] .core-dot,
.layout[data-state="verifying"]  .core-dot,
.layout[data-state="repairing"]  .core-dot { opacity: 0.85; }
.layout[data-state="generating"] .core-dot,
.layout[data-state="verifying"]  .core-dot { animation: dotPulse 1.6s ease-in-out infinite; }
.core-dot:nth-child(odd)  { animation-delay: 0.2s !important; }
.core-dot:nth-child(3n)   { animation-delay: 0.4s !important; }

/* Success: show check, hide dots/cross, slow celebratory pulse. */
.core-check { stroke-dasharray: 64; stroke-dashoffset: 64; opacity: 0; transition: opacity 320ms var(--easing), stroke-dashoffset 600ms var(--easing); }
.core-cross { opacity: 0; transition: opacity 240ms var(--easing); }
.layout[data-state="success"] .core-check { opacity: 1; stroke-dashoffset: 0; }
.layout[data-state="success"] .core-glow  { opacity: 1; }
.layout[data-state="success"] .core-node circle:first-child { animation: successPulse 2.4s ease-in-out infinite; }

/* Error: show cross, dim everything else. */
.layout[data-state="error"] .core-cross { opacity: 1; }

/* Subtle scale on state transition */
.layout[data-state="generating"] .indicator-core,
.layout[data-state="verifying"]  .indicator-core,
.layout[data-state="repairing"]  .indicator-core { transform: scale(1.04); }
.layout[data-state="success"]    .indicator-core { transform: scale(1.0); }
.layout[data-state="error"]      .indicator-core { transform: scale(0.98); }

.core__label {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg);
  text-align: center;
  transition: color 240ms var(--easing);
}
.core__meta {
  font-size: 12px;
  color: var(--fg-mute);
  font-variant-numeric: tabular-nums;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes dotPulse {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50%      { transform: scale(1.5); opacity: 1; }
}
@keyframes successPulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.15); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.7; }
}

/* ---------- Stage rail ---------- */
.stage-rail {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
}
.stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
}
.stage {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 8px;
  border-radius: var(--radius-sm);
  background: var(--code-bg);
  color: var(--fg-mute);
  font-size: 12px;
  letter-spacing: 0.02em;
  border: 1px solid var(--border);
  transition: background 240ms var(--easing), color 240ms var(--easing), border-color 240ms var(--easing);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.stage__dot {
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--border);
  flex: 0 0 8px;
  transition: background 240ms var(--easing), box-shadow 240ms var(--easing);
}
.stage.is-active {
  background: var(--accent-soft);
  color: white;
  border-color: var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
.stage.is-active .stage__dot {
  background: white;
  box-shadow: 0 0 8px rgba(255,255,255,0.6);
}
.stage.is-done {
  background: var(--bg-elev-2);
  color: var(--ok);
  border-color: var(--ok);
}
.stage.is-done .stage__dot { background: var(--ok); }

/* ---------- Activity panel ---------- */
.activity {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
}
.activity__row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 24px;
}
.activity__spinner {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--accent);
  flex: 0 0 12px;
  opacity: 0;
  transition: opacity 200ms var(--easing);
}
.layout[data-state="preparing"]  .activity__spinner,
.layout[data-state="generating"] .activity__spinner,
.layout[data-state="verifying"]  .activity__spinner,
.layout[data-state="repairing"]  .activity__spinner { opacity: 1; animation: dotPulse 1.4s ease-in-out infinite; }
.layout[data-state="success"]    .activity__spinner { background: var(--ok);   opacity: 1; animation: none; }
.layout[data-state="error"]      .activity__spinner { background: var(--error); opacity: 1; animation: none; }

.activity__copy {
  flex: 1 1 auto;
  font-size: 14px;
  color: var(--fg);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.activity__hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--fg-mute);
}

/* ---------- Code panel ---------- */
.code-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 220px;
  max-height: 50vh;
  transition: max-height 200ms var(--easing);
}
.code-panel--collapsed {
  max-height: 140px;
}
.code-panel--collapsed .code-copy-overlay {
  /* Hide copy overlay when collapsed — the user can still copy via the final-scene button. */
  display: none;
}
.code-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  font-size: 11px;
  color: var(--fg-mute);
}
.code-meta__label { font-weight: 600; color: var(--fg); letter-spacing: 0.04em; text-transform: uppercase; font-size: 10px; }
.code-meta__stats { flex: 1 1 auto; font-variant-numeric: tabular-nums; }
.code-meta__btn {
  border: 1px solid var(--border);
  background: var(--code-bg);
  color: var(--fg);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  cursor: pointer;
  min-height: 28px;
}

.code {
  position: relative;
  flex: 1 1 auto;
  margin: 0;
  padding: 10px 10px 10px 56px; /* leave room for line numbers */
  background: var(--code-bg);
  color: var(--code-fg);
  font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.55;
  overflow: auto;
  white-space: pre;
  scroll-behavior: smooth;
  counter-reset: line;
}
.code__lines {
  position: absolute;
  left: 0;
  top: 0;
  padding: 10px 8px;
  width: 44px;
  text-align: right;
  color: var(--fg-dim);
  background: var(--code-bg);
  border-right: 1px solid var(--border-soft);
  font-variant-numeric: tabular-nums;
  user-select: none;
  pointer-events: none;
  white-space: pre;
}
.code__content { display: block; }

/* ---------- Pine syntax highlighting (lightweight, no library) ----------
   Tokens emitted by tokenizePine() in app.js. Code spans are created with
   document.createElement('span') and assigned className only — never via the
   HTML-parsing API surface. */
.tk-comment    { color: var(--code-comment); font-style: italic; }
.tk-keyword    { color: var(--code-keyword); font-weight: 500; }
.tk-string     { color: var(--code-string); }
.tk-number     { color: #79c0ff; }
.tk-namespace  { color: #d2a8ff; }
.tk-builtin    { color: #79c0ff; }
.tk-fn         { color: #ffa657; font-weight: 500; }
.tk-ident      { color: var(--code-fg); }

/* ---------- Final scene ---------- */
.final {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  color: var(--ok);
}
.final__check { color: var(--ok); }
.final__title { font-weight: 600; font-size: 18px; color: var(--fg); }
.final__meta  { color: var(--fg-mute); font-size: 12px; word-break: break-all; max-width: 100%; }
.final__subtext {
  color: var(--ok);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.final__actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 6px; }
.final__tertiary {
  background: transparent;
  color: var(--fg-mute);
  border: none;
  padding: 6px 8px;
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 3px;
  min-height: 32px;
}
.final__tertiary:active { transform: scale(0.97); }

/* ---------- Error state ---------- */
.error-state {
  background: var(--bg-elev);
  border: 1px solid var(--error);
  border-radius: var(--radius);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  color: var(--error);
}
.error-state__icon { color: var(--error); }
.error-state__title { font-weight: 600; font-size: 18px; color: var(--fg); }
.error-state__message {
  color: var(--fg-mute); font-size: 13px;
  max-width: 100%;
  word-break: break-word;
}
.error-state__actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 6px; }

/* ---------- Buttons ---------- */
.btn {
  min-height: var(--tap);
  padding: 0 14px;
  border-radius: 10px;
  background: var(--bg-elev-2);
  color: var(--fg);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 120ms var(--easing), background 160ms var(--easing), border-color 160ms var(--easing);
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.85; cursor: default; }
.btn--primary { background: var(--accent-soft); color: white; border-color: var(--accent); }
.btn--secondary { background: var(--bg-elev-2); color: var(--fg); border-color: var(--accent-soft); }
.btn--copied { background: var(--ok) !important; color: white !important; border-color: var(--ok) !important; }

/* Code-panel collapse chevron (top-right of code-meta) */
.code-meta__chevron {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--code-bg);
  color: var(--fg);
  cursor: pointer;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: background 160ms var(--easing), border-color 160ms var(--easing);
}
.code-meta__chevron:active { transform: scale(0.95); }

/* Floating copy button on code panel (small overlay, top-right of code area) */
.code-copy-overlay {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 2;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--fg);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 11px;
  cursor: pointer;
  min-height: 28px;
  opacity: 0.78;
  transition: opacity 160ms var(--easing), background 160ms var(--easing);
}
.code-copy-overlay:hover { opacity: 1; }

/* Reconnecting ribbon — thin pulse indicator shown when SSE stalls >500ms. */

/* Reconnecting ribbon — thin pulse indicator shown when SSE stalls >500ms. */
.layout--reconnecting {
  position: relative;
}
.layout--reconnecting::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--accent);
  z-index: 50;
  animation: ribbonPulse 2s ease-in-out infinite;
  pointer-events: none;
}
@keyframes ribbonPulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}

/* Activity elapsed format: "В работе · MM:SS" */
.activity__elapsed {
  font-size: 12px;
  color: var(--fg-mute);
  font-variant-numeric: tabular-nums;
  flex: 0 0 auto;
  white-space: nowrap;
}

/* Paused ambient animation: kill all running keyframes when document.hidden.
   This saves battery when the user backgrounds the Mini App. */
.layout--paused .core-ring,
.layout--paused .core-dot,
.layout--paused .core-node circle:first-child,
.layout--paused .activity__spinner,
.layout--paused .stage.is-active {
  animation-play-state: paused !important;
}

/* ---------- Landing / footer ---------- */
.landing {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}
.footer { min-height: 24px; display: flex; align-items: center; justify-content: center; }
.footer__error { color: var(--error); font-size: 12px; text-align: center; }

/* ---------- Mobile breakpoints ---------- */
@media (max-width: 380px) {
  .layout { padding: 10px; gap: 10px; }
  .indicator-core { width: 180px; height: 180px; }
  .stage { font-size: 11px; padding: 6px 6px; }
  .code { font-size: 11px; padding-left: 48px; }
  .code__lines { width: 38px; padding: 10px 6px; }
  .activity__copy { font-size: 13px; }
  /* Tight final-scene buttons so they fit a 320px viewport. */
  .final__actions .btn { padding: 0 10px; font-size: 13px; }
  .code-meta__chevron { width: 26px; height: 26px; }
}
@media (min-width: 480px) {
  .indicator-core { width: 240px; height: 240px; }
  .code { font-size: 13px; }
}

/* ---------- prefers-reduced-motion ----------
   Per AC-011 / AC-016: disable ambient animation when the user has set the
   OS-level reduce-motion preference. Transients still happen — just instantly. */
@media (prefers-reduced-motion: reduce) {
  .core-ring,
  .core-dot,
  .core-node circle:first-child,
  .activity__spinner,
  .stage.is-active {
    animation: none !important;
  }
  * { transition-duration: 1ms !important; }
  .code { scroll-behavior: auto !important; }
  .indicator-core { transform: none !important; }
  .core-glow { opacity: 0; }
  .layout[data-state="preparing"]  .core-glow,
  .layout[data-state="generating"] .core-glow,
  .layout[data-state="verifying"]  .core-glow,
  .layout[data-state="repairing"]  .core-glow,
  .layout[data-state="success"]    .core-glow { opacity: 0.6; } /* keep some visual cue, no animation */
}