:root {
  --bg: #0b1020;
  --panel: #111731;
  --panel2: #171f3d;
  --border: #26304f;
  --text: #e7ecf7;
  --muted: #93a0bd;
  --accent: #7c5cff;
  --accent2: #22d3ee;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}
.hidden { display: none !important; }

/* ---- Topbar ---- */
.topbar {
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.logo {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.logo em { color: var(--accent); font-style: normal; }
.topbar .spacer { flex: 1; }
select {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  font: inherit;
  font-size: 13px;
}
.btn {
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 9px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.btn:hover { border-color: var(--accent); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), #5b8cff);
  border: none;
}
.btn.pro {
  background: linear-gradient(135deg, #f59e0b, #f43f5e);
  border: none;
}
.btn.pro.is-pro { background: linear-gradient(135deg, #10b981, #22d3ee); }
.btn.disabled { opacity: 0.45; pointer-events: none; }

/* ---- Layout ---- */
.main {
  display: flex;
  height: calc(100% - 56px);
}
.stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  overflow: auto;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(124, 92, 255, 0.12), transparent),
    var(--bg);
}
#preview {
  max-width: 100%;
  max-height: 100%;
  border-radius: 12px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 16px;
  padding: 70px 60px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  max-width: 480px;
}
.dropzone.drag, .dropzone:hover { border-color: var(--accent); background: rgba(124, 92, 255, 0.06); }
.dropzone h2 { color: var(--text); font-size: 19px; margin-bottom: 8px; }
.dropzone p { font-size: 14px; line-height: 1.6; }
.dropzone kbd {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 7px;
  font-size: 12px;
}

/* ---- Sidebar ---- */
.sidebar {
  width: 300px;
  border-left: 1px solid var(--border);
  background: var(--panel);
  padding: 18px 16px 40px;
  overflow-y: auto;
}
.group { margin-bottom: 22px; }
.group > label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 10px;
}
.swatches { display: grid; grid-template-columns: repeat(8, 1fr); gap: 7px; }
.swatch {
  aspect-ratio: 1;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
}
.swatch.active { border-color: #fff; }
.customrow { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.customrow input[type="color"] {
  width: 34px; height: 30px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--panel2);
  padding: 2px;
  cursor: pointer;
}
input[type="range"] { width: 100%; accent-color: var(--accent); }
.sliderrow { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.sliderrow span { font-size: 12px; color: var(--muted); width: 64px; flex-shrink: 0; }
.segment { display: flex; gap: 6px; flex-wrap: wrap; }
.segment .btn { padding: 7px 11px; font-size: 12px; }
.segment .btn.active { border-color: var(--accent); background: rgba(124, 92, 255, 0.15); }

/* ---- Export bar ---- */
#exportbar { display: flex; gap: 8px; }
#exportbar.disabled { opacity: 0.5; pointer-events: none; }

/* ---- Modal ---- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}
.modal-box {
  width: min(440px, 92vw);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px;
  position: relative;
}
.modal-box h3 { font-size: 20px; margin-bottom: 6px; }
.modal-box .sub { color: var(--muted); font-size: 13px; margin-bottom: 18px; }
.modal-box ul { list-style: none; margin-bottom: 18px; }
.modal-box li { font-size: 14px; padding: 4px 0; }
.modal-close {
  position: absolute;
  top: 12px; right: 14px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
}
.buyrow { display: flex; gap: 10px; margin-bottom: 18px; }
.buyrow .btn { flex: 1; text-align: center; padding: 12px; }
.buyrow small { display: block; font-weight: 400; opacity: 0.85; margin-top: 2px; }
.divider { border-top: 1px solid var(--border); margin: 16px 0; }
#license-form { display: flex; gap: 8px; }
#license-form input {
  flex: 1;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 11px;
  font: inherit;
  font-size: 13px;
}
.status { font-size: 12px; margin-top: 8px; color: var(--muted); }
.status.ok { color: #34d399; }
.status.err { color: #f87171; }
.warn {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fcd34d;
  font-size: 12px;
  padding: 9px 11px;
  border-radius: 8px;
  margin-bottom: 14px;
  line-height: 1.5;
}

@media (max-width: 860px) {
  body { overflow: auto; }
  .main { flex-direction: column; height: auto; }
  .stage { min-height: 46vh; }
  .sidebar { width: 100%; border-left: none; border-top: 1px solid var(--border); }
}