/* ── TinyTalk IDE — Dark Theme ────────────────────────────────────── */

:root {
  --bg-primary:    #1E1E2E;
  --bg-secondary:  #181825;
  --bg-surface:    #313244;
  --bg-hover:      #45475A;
  --text-primary:  #CDD6F4;
  --text-secondary:#A6ADC8;
  --text-muted:    #6C7086;
  --accent:        #89B4FA;
  --accent-green:  #A6E3A1;
  --accent-red:    #F38BA8;
  --accent-yellow: #F9E2AF;
  --accent-teal:   #94E2D5;
  --border:        #45475A;
  --radius:        6px;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* ── Toolbar ─────────────────────────────────────────────────────── */

#toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 44px;
  padding: 0 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  gap: 8px;
  flex-shrink: 0;
}

.toolbar-left, .toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo {
  font-weight: 700;
  font-size: 15px;
  color: var(--accent-teal);
  letter-spacing: 0.5px;
  margin-right: 8px;
  font-family: var(--font-mono);
}

.separator {
  width: 1px;
  height: 20px;
  background: var(--border);
}

button, select {
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  border: none;
  outline: none;
}

#btn-run {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--accent-green);
  color: #1E1E2E;
  font-weight: 600;
  border-radius: var(--radius);
  transition: opacity 0.15s;
}
#btn-run:hover { opacity: 0.85; }
#btn-run:active { opacity: 0.7; }
#btn-run svg { flex-shrink: 0; }

.btn-secondary {
  padding: 6px 12px;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}
.btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

select {
  padding: 6px 10px;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border-radius: var(--radius);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='%23a6adc8'%3E%3Cpath d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 24px;
}
select:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

/* ── Main layout ─────────────────────────────────────────────────── */

#main {
  display: flex;
  flex: 1;
  height: calc(100vh - 44px - 28px); /* toolbar + statusbar */
  overflow: hidden;
}

#editor-pane {
  flex-basis: 55%;
  flex-shrink: 0;
  min-width: 200px;
  overflow: hidden;
}

#editor {
  width: 100%;
  height: 100%;
}

#resize-handle {
  width: 4px;
  cursor: col-resize;
  background: var(--border);
  transition: background 0.15s;
  flex-shrink: 0;
}
#resize-handle:hover {
  background: var(--accent);
}

#output-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 200px;
  overflow: hidden;
  background: var(--bg-primary);
}

/* ── Output tabs ─────────────────────────────────────────────────── */

#output-tabs {
  display: flex;
  padding: 0 8px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#output-tabs .tab {
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
#output-tabs .tab:hover {
  color: var(--text-secondary);
}
#output-tabs .tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

#output-panels {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.panel {
  display: none;
  position: absolute;
  inset: 0;
  padding: 12px 16px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.panel.active {
  display: block;
}
.panel.error {
  color: var(--accent-red);
}

/* ── Status bar ──────────────────────────────────────────────────── */

#statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 28px;
  padding: 0 12px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}

#status-stats {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Scrollbar styling ───────────────────────────────────────────── */

.panel::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.panel::-webkit-scrollbar-track {
  background: transparent;
}
.panel::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 4px;
}
.panel::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ── Debug panel ─────────────────────────────────────────────────── */

#panel-debug {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  padding: 12px 16px;
  overflow: auto;
}

.debug-chain {
  margin-bottom: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--bg-secondary);
}

.debug-header {
  font-weight: 600;
  color: var(--accent-teal);
  margin-bottom: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.debug-step {
  padding: 6px 8px;
  border-radius: 4px;
  margin: 4px 0;
}

.debug-source {
  background: rgba(137, 180, 250, 0.1);
  border-left: 3px solid var(--accent);
}

.debug-arrow {
  color: var(--accent-teal);
  font-weight: bold;
  display: block;
  padding: 2px 0;
}

.debug-step-name {
  color: var(--accent-teal);
  font-weight: 600;
}

.debug-args {
  color: var(--text-secondary);
  margin-left: 2px;
}

.debug-label {
  color: var(--accent);
  font-weight: 600;
  margin-right: 8px;
}

.debug-result {
  margin-top: 4px;
  padding-left: 16px;
}

.debug-preview {
  color: var(--text-primary);
  word-break: break-all;
}

.debug-count {
  color: var(--text-muted);
  margin-left: 8px;
  font-size: 11px;
}

/* ── Responsive: stack vertically on narrow screens ──────────────── */

@media (max-width: 768px) {
  #main {
    flex-direction: column;
  }
  #editor-pane {
    flex-basis: 50% !important;
    min-height: 200px;
  }
  #resize-handle {
    width: auto;
    height: 4px;
    cursor: row-resize;
  }
  #output-pane {
    min-height: 200px;
  }
}