:root {
  color-scheme: dark;
  --page-bg: #191a20;
  --panel-bg: #242632;
  --panel-border: #3a3d4c;
  --text: #f4f4f7;
  --muted: #b9bccb;
  --button-bg: #f2f2f5;
  --button-text: #18191f;
  --button-hover: #ffffff;
  --danger: #ff7777;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page-bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
.file-button {
  border: 0;
  border-radius: 10px;
  background: var(--button-bg);
  color: var(--button-text);
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 700;
}

button:hover,
.file-button:hover {
  background: var(--button-hover);
}

.app-shell {
  width: min(1400px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.app-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.app-header h1,
.app-header p,
.preview-header h2,
.preview-header p,
.editor-panel h2 {
  margin: 0;
}

.app-header h1 {
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
}

.app-header p,
.preview-header p {
  color: var(--muted);
  margin-top: 8px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.file-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.file-button input {
  display: none;
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 20px;
  align-items: start;
}

.editor-panel,
.preview-panel {
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: var(--panel-bg);
}

.editor-panel {
  padding: 18px;
}

.editor-panel h2 {
  margin-bottom: 16px;
}

.editor {
  display: grid;
  gap: 14px;
}

.dialogue-editor-card {
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.dialogue-editor-card header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.dialogue-editor-card h3 {
  margin: 0;
  font-size: 1rem;
}

.remove-button {
  background: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 6px 10px;
}

.remove-button:hover {
  background: rgba(255, 119, 119, 0.15);
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

.field label {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
}

.field input[type="text"],
.field textarea,
.field select {
  width: 100%;
  border: 1px solid #4a4d5f;
  border-radius: 10px;
  background: #181a22;
  color: var(--text);
  padding: 9px 10px;
}

.field textarea {
  min-height: 92px;
  resize: vertical;
}

.portrait-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 12px;
  align-items: center;
}

.portrait-thumb {
  width: 72px;
  height: 72px;
  border: 1px solid #5b5f73;
  border-radius: 10px;
  object-fit: cover;
  background: #15161b;
}

.preview-panel {
  overflow: hidden;
}

.preview-header {
  padding: 18px 18px 0;
}

.canvas-wrap {
  margin: 18px;
  overflow: auto;
  max-height: calc(100vh - 220px);
  border-radius: 12px;
  border: 1px solid #3a3d4c;
  padding: 18px;
  background:
    linear-gradient(45deg, #4f5261 25%, transparent 25%),
    linear-gradient(-45deg, #4f5261 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #4f5261 75%),
    linear-gradient(-45deg, transparent 75%, #4f5261 75%);
  background-color: #343744;
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .canvas-wrap {
    max-height: none;
  }
}