:root {
  --bg: #0099cc;
  --panel: #fffaf0;
  --ink: #1f1b16;
  --muted: #6f655b;
  --brand: #0099cc;
  --accent: #c43d2b;
  --accent-soft: rgba(196, 61, 43, 0.18);
  --flag: #b85c00;
  --flag-soft: rgba(243, 155, 47, 0.28);
  --line: rgba(31, 27, 22, 0.12);
  --shadow: 0 14px 40px rgba(31, 27, 22, 0.12);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --sans: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
}

header {
  padding: 28px 6vw 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

header h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.6rem, 2.2vw, 2.2rem);
  margin: 0;
  letter-spacing: 0.02em;
}

header p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.toolbar-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

button {
  border: none;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 10px;
  font-family: var(--sans);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(31, 27, 22, 0.2); }
button:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; transform: none; }

.pill {
  border: 1px solid rgba(0, 153, 204, 0.4);
  background: #fff;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

main {
  padding: 0 6vw 40px;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 60vh;
}

.panel header {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.65);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 2;
  padding-bottom: 28px;
}

.status-pill {
  position: fixed;
  top: 18px;
  right: 6vw;
  z-index: 5;
}

.panel header h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.panel-title {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool-subtitle {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 2px;
}

.toolbar-subtitle {
  margin-top: 0;
  margin-left: 12px;
  white-space: nowrap;
}

.panel-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.stack {
  padding: 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.editor-input {
  background: #fff;
  color: var(--ink);
  caret-color: var(--ink);
  border: 1px solid var(--line);
  outline: none;
  border-radius: 12px;
  padding: 16px;
  font-family: var(--mono);
  font-size: 0.98rem;
  line-height: 1.6;
  min-height: 55vh;
  white-space: pre-wrap;
  word-break: break-word;
  overflow: auto;
  max-height: calc(100vh - 320px);
}

.editor-input:empty::before {
  content: attr(data-placeholder);
  color: var(--muted);
}

.change {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 6px;
  padding: 0 2px;
  cursor: pointer;
}

.flag {
  background: var(--flag-soft);
  color: var(--flag);
  border-radius: 6px;
  padding: 0 2px;
}

.reverted {
  background: rgba(42, 143, 75, 0.2);
  color: #2a8f4b;
  border-radius: 6px;
  padding: 0 2px;
  cursor: pointer;
}


.meta {
  padding: 12px 18px 18px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #b1a79d;
  display: inline-block;
}

.status-dot.active { background: #2a8f4b; }

.toolbar button {
  background: #fff;
  color: var(--brand);
  border: 1px solid rgba(0, 153, 204, 0.5);
}

.toolbar button.primary {
  background: var(--brand);
  color: #fff;
  border: 1px solid var(--brand);
}

.menu-button {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 10px 12px;
  background: var(--brand);
  border: 1px solid var(--brand);
  color: #fff;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}

.link-button {
  background: transparent;
  border: none;
  color: var(--brand);
  font-weight: 600;
  cursor: pointer;
  padding: 6px 8px;
}

.link-button:hover {
  text-decoration: underline;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 22, 30, 0.35);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 10;
}

.modal.open {
  display: flex;
}

.modal-card {
  background: #fff;
  border-radius: 16px;
  padding: 18px;
  width: min(520px, 90vw);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  display: grid;
  gap: 12px;
}

.modal-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.modal-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.modal-card textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 0.95rem;
  resize: vertical;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

.field input {
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 0.95rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

@media (max-width: 720px) {
  header { padding: 20px 6vw 8px; }
  .panel { min-height: 48vh; }
  .status-pill { top: 12px; right: 5vw; }
}
.app-brand-icon svg {
  width: 34px;
  height: 34px;
}