:root {
  --bg: #f6f6f3;
  --panel: #ffffff;
  --ink: #111111;
  --muted: #6b6b66;
  --line: #d8d8d1;
  --soft: #eeeeea;
  --error: #a02828;
  --ok: #1f6b42;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Helvetica, Arial, system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
}

button, input, textarea { font: inherit; }

.app {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 42px;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

h1 {
  margin: 0;
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: -0.03em;
  line-height: 1;
}

.topbar span {
  color: var(--muted);
  font-size: 13px;
}

.lead, .note {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.04);
}

h2 {
  margin: 0 0 16px;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.field {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
}

.field > span {
  color: var(--muted);
  font-size: 13px;
}

textarea, input {
  width: 100%;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
}

textarea {
  min-height: 138px;
  padding: 12px;
  resize: vertical;
  line-height: 1.6;
}

input {
  height: 44px;
  padding: 0 12px;
}

textarea:focus, input:focus {
  border-color: #999991;
}

.password-line {
  display: grid;
  grid-template-columns: 1fr 76px;
  gap: 8px;
}

.actions {
  display: flex;
  gap: 8px;
  align-items: center;
  margin: 0 0 16px;
}

.actions.wrap { flex-wrap: wrap; }

button, .file-button {
  min-height: 42px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  user-select: none;
}

button.primary {
  color: #fff;
  background: #111;
  border-color: #111;
}

button:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.file-row input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.canvas-wrap {
  width: 100%;
  min-height: 280px;
  display: grid;
  place-items: center;
  overflow: auto;
  background: #fbfbf8;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
}

.canvas-wrap.small { min-height: 160px; }

canvas {
  display: block;
  max-width: 100%;
  height: auto;
  image-rendering: auto;
  background: #fff;
}

.meta-text {
  margin: -6px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.status {
  margin: 14px 0 0;
  padding: 10px 12px;
  color: var(--muted);
  background: rgba(255,255,255,0.62);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 13px;
}

.status.ok { color: var(--ok); }
.status.error { color: var(--error); }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.page-card {
  display: grid;
  gap: 8px;
  padding: 10px;
  background: #fbfbf8;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.page-card canvas {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.page-card button {
  width: 100%;
  min-height: 36px;
  font-size: 12px;
}