* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.14), transparent 35%),
              radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.08), transparent 25%),
              linear-gradient(180deg, #020617 0%, #0f172a 100%);
  color: #e2e8f0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  padding: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button, select, textarea {
  font: inherit;
}

.page {
  width: min(1440px, calc(100% - 48px));
  margin: 0 auto;
  padding: 32px 0 72px;
}

.panel {
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 28px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.25);
}

.hero, .editor-panel, .sidebar {
  padding: 28px;
}

.hero {
  display: grid;
  gap: 24px;
}

.hero-header {
  display: grid;
  gap: 16px;
}

.hero-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: #34d399;
}

.hero-title {
  font-size: clamp(2rem, 2.8vw, 3rem);
  margin: 0;
  line-height: 1.05;
}

.hero-title .accent {
  color: #22d3ee;
}

.hero-copy {
  margin: 0;
  line-height: 1.7;
  color: #cbd5e1;
  max-width: 67ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  padding: 12px 20px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
  background: rgba(15, 23, 42, 0.95);
  color: #e2e8f0;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: rgba(16, 185, 129, 0.18);
  border-color: rgba(16, 185, 129, 0.45);
  color: #a7f3d0;
}

.button-secondary {
  background: rgba(15, 23, 42, 0.96);
}

.grid {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}

@media (min-width: 1100px) {
  .grid {
    grid-template-columns: 1.65fr 0.95fr;
  }
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.toolbar-left,
.toolbar-right {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.label {
  font-size: 0.75rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.select {
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  background: rgba(15, 23, 42, 0.96);
  color: #e2e8f0;
  padding: 12px 14px;
  min-width: 160px;
}

.status-card {
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.9);
  padding: 14px 16px;
  min-width: 170px;
}

.status-card .label {
  margin-bottom: 8px;
}

.meta-value {
  color: #e2e8f0;
  font-size: 0.95rem;
  line-height: 1.5;
  word-break: break-all;
}

.editor-shell {
  position: relative;
  display: grid;
  min-height: 72vh;
  max-height: 72vh;
  border-radius: 24px;
  overflow: hidden;
  background: #020617;
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.editor-textarea {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 22px;
  border: none;
  outline: none;
  resize: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.98rem;
  line-height: 1.65;
  background: transparent;
  color: transparent;
  caret-color: #f8fafc;
  z-index: 10;
  overflow-wrap: break-word;
  word-break: break-all;
}

.editor-textarea::selection {
  background: rgba(56, 189, 248, 0.28);
}

.code-display {
  position: absolute;
  inset: 0;
  padding: 22px;
  margin: 0;
  height: 100%;
  width: 100%;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.98rem;
  line-height: 1.65;
  background: #020617;
  color: #f8fafc;
  white-space: pre-wrap;
  word-wrap: break-word;
  word-break: break-all;
  pointer-events: none;
  z-index: 1;
}

.code-display code {
  display: block;
  width: 100%;
}

.keyword {
  color: #9d4edd;
}

.string {
  color: #26d07c;
}

.number {
  color: #ff9f43;
}

.comment {
  color: #7c8da6;
  font-style: italic;
}

.function {
  color: #00d4ff;
}

.tag {
  color: #ff6b6b;
}

.attribute {
  color: #a8dadc;
}

.operator {
  color: #e2e8f0;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(15, 23, 42, 0.84);
  color: #f8fafc;
  text-align: center;
  padding: 28px;
}

.hidden {
  display: none;
}

.sidebar {
  display: grid;
  gap: 22px;
}

.card {
  padding: 20px;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.card-title {
  margin: 0 0 14px 0;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #94a3b8;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: #cbd5e1;
  font-size: 0.95rem;
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  padding: 12px 0;
}

.meta-row:first-of-type {
  border-top: none;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  min-width: 280px;
  max-width: calc(100% - 32px);
  padding: 14px 18px;
  border-radius: 16px;
  text-align: center;
  background: rgba(15, 23, 42, 0.96);
  color: #e2e8f0;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 20;
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

.toast.success {
  border: 1px solid rgba(34, 197, 94, 0.35);
}

.toast.error {
  border: 1px solid rgba(248, 113, 113, 0.35);
}

.dark-mode {
  background: #f8fafc;
  color: #0f172a;
}

.dark-mode body {
  background: #f8fafc;
  color: #0f172a;
}

.dark-mode .panel {
  background: rgba(255, 255, 255, 0.94);
  border-color: rgba(148, 163, 184, 0.22);
}

.dark-mode .button,
.dark-mode .select,
.dark-mode .editor-textarea {
  background: #f8fafc;
  color: #0f172a;
}

.dark-mode .button-primary {
  background: rgba(34, 197, 94, 0.16);
  color: #166534;
}

.footer {
  text-align: center;
  padding: 32px 28px;
  margin-top: 24px;
  font-size: 0.85rem;
  color: #64748b;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.dark-mode .footer {
  color: #64748b;
  border-top-color: rgba(15, 23, 42, 0.3);
}