body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ── */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 54px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
  position: relative;
}

.logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: .04em;
  white-space: nowrap;
}
.logo span { color: var(--muted); font-weight: 400; }

.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted); flex-shrink: 0;
  transition: background .4s;
}
.status-dot.ok    { background: #6aaa60; box-shadow: 0 0 6px #6aaa6088; }
.status-dot.error { background: var(--danger); }

.status-label { font-size: 12px; color: var(--muted); }
.settings-status { margin-left: auto; display: flex; align-items: center; gap: 6px; }

.header-spacer { flex: 1; }

.model-badge {
  font-size: 11px;
  color: var(--accent);
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 5px;
  padding: 4px 10px;
  letter-spacing: .05em;
}

.workflow-center {
  display: flex;
  align-items: center;
  gap: 8px;
}
.workflow-center label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  white-space: nowrap;
}
.workflow-center select {
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 5px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  padding: 5px 8px;
  outline: none;
  cursor: pointer;
}
.workflow-center select:focus { border-color: var(--accent); }

.variant-toggle {
  display: flex;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 5px;
  overflow: hidden;
}
.variant-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.variant-btn:hover { color: var(--text); }
.variant-btn.active {
  background: var(--accent);
  color: #fff;
}

.header-divider {
  width: 1px;
  height: 24px;
  background: var(--border2);
  flex-shrink: 0;
}

.header-setting {
  display: flex;
  align-items: center;
  gap: 6px;
}
.header-setting label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  white-space: nowrap;
}
.header-setting input[type=number] {
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 5px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  padding: 4px 6px;
  width: 110px;
  outline: none;
}
.header-setting input[type=number]:focus { border-color: var(--accent); }
.header-setting input[type=number]::placeholder { color: var(--dim-text); }

/* ── Main layout ── */
.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Left panel ── */
.left {
  width: 50%;
  min-width: 400px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

/* ── Panel divider (draggable) ── */
.panel-divider {
  width: 6px;
  cursor: col-resize;
  background: var(--border);
  flex-shrink: 0;
  position: relative;
  z-index: 10;
  transition: background .15s;
}
.panel-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 3px;
  height: 36px;
  border-radius: 2px;
  background: var(--border2);
}
.panel-divider:hover, .panel-divider.dragging {
  background: var(--accent-dim);
}

.images-area {
  flex: 1;
  padding: 16px;
  display: flex;
  gap: 14px;
  overflow: hidden;
  min-height: 0;
}

/* ── Right panel ── */
.right {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Resize handle between preview and history ── */
.resize-handle {
  height: 6px;
  cursor: ns-resize;
  background: var(--border);
  flex-shrink: 0;
  position: relative;
  display: none;
}
.resize-handle.visible { display: block; }
.resize-handle::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 3px;
  border-radius: 2px;
  background: var(--border2);
}
.resize-handle:hover, .resize-handle.dragging {
  background: var(--accent-dim);
}

/* ── Dev Settings panel ── */
.dev-panel {
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.dev-panel-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--surface);
  border: none;
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  letter-spacing: .05em;
  cursor: pointer;
  transition: color .2s;
}
.dev-panel-toggle:hover { color: var(--text); }
.dev-panel-toggle .arrow { transition: transform .2s; }
.dev-panel.open .dev-panel-toggle .arrow { transform: rotate(90deg); }
.dev-panel-body {
  display: none;
  padding: 10px 14px 14px;
  background: var(--surface);
  gap: 8px;
  flex-direction: column;
}
.dev-panel.open .dev-panel-body { display: flex; }