:root {
  --bg: #0e0f12;
  --panel: #15171b;
  --panel-2: #1b1e23;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f6f7fb;
  --muted: rgba(246, 247, 251, 0.6);
  --accent: #ff4e8a;
  --accent-2: #ffb347;
  --danger: #ff7b8c;
  --ok: #2bd17e;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); height: 100%; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,78,138,0.05), transparent);
}

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; }
.brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 18px var(--accent); }
.brand .title { font-size: 15px; letter-spacing: 0; }

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  padding: 9px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, opacity 120ms ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn.primary { background: var(--accent); color: #1a0a12; border-color: transparent; box-shadow: 0 12px 32px rgba(255, 78, 138, 0.3); }
.btn.ghost { background: transparent; }

.layout {
  display: grid;
  grid-template-columns: minmax(360px, 460px) 1fr;
  gap: 20px;
  padding: 20px;
  height: calc(100vh - 60px);
}
@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; height: auto; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.form { padding: 18px; gap: 14px; overflow: auto; }

.field { display: grid; gap: 6px; }
.field label { font-size: 12px; font-weight: 800; color: var(--muted); letter-spacing: 0.03em; text-transform: uppercase; }
.field input[type="text"],
.field input[type="number"],
.field input[type="url"],
.field select,
.field textarea {
  appearance: none;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.field .checkboxes { display: flex; flex-wrap: wrap; gap: 8px; }
.field .checkboxes label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
  cursor: pointer;
}
.field .checkboxes input { accent-color: var(--accent); }

.section-title {
  font-size: 11px;
  font-weight: 900;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 8px;
}

.preview {
  background: #0a0b0e;
  position: relative;
}
.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}
.preview-frame {
  flex: 1;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 30% 0%, rgba(255,78,138,0.07), transparent 60%);
}
.preview-mount {
  width: 100%;
  height: 100%;
  position: relative;
}

.muted { color: var(--muted); }

.toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel-2);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  z-index: 50;
}
.toast.is-ok { color: var(--ok); }
.toast.is-error { color: var(--danger); }