* { box-sizing: border-box; margin: 0; padding: 0; }

[hidden] { display: none !important; }

:root {
  --bg: #16181d;
  --panel: #1f232b;
  --panel2: #262b35;
  --border: #333a47;
  --text: #e8eaf0;
  --muted: #8b93a5;
  --accent: #03c75a;
  --accent-dark: #02a94d;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans KR", "Malgun Gothic", sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
header h1 { font-size: 18px; font-weight: 900; }
header .sub { color: var(--muted); font-size: 13px; }
.header-actions { margin-left: auto; display: flex; gap: 8px; }

.btn {
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  transition: filter .15s;
}
.btn:hover:not(:disabled) { filter: brightness(1.2); }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent-dark); color: #fff; font-weight: 700; }
.btn.ghost { background: transparent; }
.btn.small { padding: 5px 10px; font-size: 12px; }

main {
  display: grid;
  grid-template-columns: 260px 1fr 300px;
  gap: 14px;
  padding: 14px;
  flex: 1;
  min-height: 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  overflow-y: auto;
  max-height: calc(100vh - 90px);
}

/* ---- 왼쪽 패널 ---- */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 26px 12px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  font-size: 14px;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: rgba(3,199,90,.06); }
.dropzone .hint { margin-top: 6px; }
.hint { color: var(--muted); font-size: 12px; font-weight: 400; }

.img-list { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.img-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 13px;
}
.img-list li:hover { background: var(--panel2); }
.img-list li.sel { border-color: var(--accent); background: rgba(3,199,90,.08); }
.img-list img { width: 44px; height: 44px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.img-list .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.img-list .del { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 15px; padding: 2px 6px; }
.img-list .del:hover { color: #ff6b6b; }
#clearAll { margin-top: 10px; width: 100%; }

/* ---- 가운데 ---- */
.preview-area {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}
.text-inputs {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 12px;
}
.text-inputs label { font-size: 13px; color: var(--muted); display: flex; flex-direction: column; gap: 5px; }

.canvas-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: repeating-conic-gradient(#20242c 0% 25%, #1a1d24 0% 50%) 0 0 / 24px 24px;
  border: 1px solid var(--border);
  border-radius: 12px;
  min-height: 320px;
  overflow: hidden;
  position: relative;
}
#canvas {
  max-width: 96%;
  max-height: calc(100vh - 320px);
  min-height: 200px;
  box-shadow: 0 8px 30px rgba(0,0,0,.5);
  cursor: grab;
  display: none;
}
#canvas.on { display: block; }
#canvas:active { cursor: grabbing; }
.empty-msg { color: var(--muted); font-size: 14px; }

.canvas-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 13px;
  flex-wrap: wrap;
}
.canvas-tools label { display: flex; align-items: center; gap: 8px; }

/* ---- 오른쪽 패널 ---- */
.panel.right details { border-bottom: 1px solid var(--border); padding: 4px 0 12px; margin-bottom: 8px; }
.panel.right details:last-child { border-bottom: none; }
.panel.right summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  padding: 8px 0;
  user-select: none;
}
.panel.right label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
  flex: 1;
}
.row { display: flex; gap: 10px; }
.row.checks { align-items: flex-end; }
.check { flex-direction: row !important; align-items: center; gap: 6px !important; color: var(--text) !important; }

input[type="text"], input[type="number"], select, textarea {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 7px;
  padding: 7px 9px;
  font-size: 13px;
  font-family: inherit;
  width: 100%;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 1px solid var(--accent); }
input[type="color"] {
  width: 100%;
  height: 32px;
  padding: 2px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 7px;
  cursor: pointer;
}
input[type="range"] { accent-color: var(--accent); width: 100%; }
input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; }

@media (max-width: 1100px) {
  main { grid-template-columns: 1fr; }
  .panel { max-height: none; }
  #canvas { max-height: 60vh; }
}