/* ============ CSV → JSON Converter Tool ============ */
/* Scoped under #csvjson-app so it won't break your site */

#csvjson-app *,
#csvjson-app *::before,
#csvjson-app *::after { box-sizing: border-box; }

#csvjson-app {
  --bg: #0f1220;
  --bg-2: #171b2e;
  --panel: #1b2036;
  --panel-2: #232a45;
  --border: #2c3454;
  --text: #e8ebf5;
  --text-dim: #9aa3c4;
  --primary: #5b7cfa;
  --primary-2: #7d95ff;
  --accent: #2dd4bf;
  --danger: #f87171;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 14px;
  --font: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --mono: 'SF Mono', ui-monospace, Consolas, 'Courier New', monospace;

  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(160deg, var(--bg), var(--bg-2));
  color: var(--text);
  font-family: var(--font);
  overflow: hidden;
  z-index: 1;
}

#csvjson-app.cj-light {
  --bg: #eef1f8;
  --bg-2: #f7f8fc;
  --panel: #ffffff;
  --panel-2: #f0f3fb;
  --border: #dce1ee;
  --text: #1a1f36;
  --text-dim: #5a6485;
  --shadow: 0 10px 30px rgba(30,41,80,.10);
}

/* ---------- Header ---------- */
.cj-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.cj-brand { display: flex; align-items: center; gap: 14px; }
.cj-logo {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 6px 16px rgba(91,124,250,.4);
}
.cj-title h1 { font-size: 1.22rem; margin: 0; font-weight: 700; letter-spacing: .2px; }
.cj-title h1 span { color: var(--accent); }
.cj-title p { margin: 2px 0 0; font-size: .78rem; color: var(--text-dim); }

.cj-theme-toggle button {
  width: 42px; height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  display: grid; place-items: center;
  transition: .2s;
}
.cj-theme-toggle button:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- Toolbar ---------- */
.cj-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  padding: 12px 22px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.cj-opt-group label {
  font-size: .78rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-weight: 600;
}
.cj-opt-group select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: .82rem;
  font-family: var(--font);
  cursor: pointer;
  outline: none;
  transition: .2s;
}
.cj-opt-group select:focus { border-color: var(--primary); }
.cj-check {
  flex-direction: row !important;
  align-items: center;
  cursor: pointer;
  user-select: none;
  color: var(--text) !important;
  font-weight: 500 !important;
}
.cj-check input { accent-color: var(--primary); width: 16px; height: 16px; cursor: pointer; }

/* ---------- Main ---------- */
.cj-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  padding: 16px 22px;
  min-height: 0;
  overflow: hidden;
}

.cj-panel {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 0;
}
.cj-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 8px;
}
.cj-panel-title {
  display: flex; align-items: center; gap: 8px;
  font-size: .85rem; font-weight: 700; letter-spacing: .3px;
}
.cj-panel-actions { display: flex; gap: 7px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.cj-btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-family: var(--font);
  font-size: .8rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: .18s;
  display: inline-flex; align-items: center; gap: 7px;
  white-space: nowrap;
}
.cj-btn:hover { transform: translateY(-1px); }
.cj-btn:active { transform: translateY(0); }
.cj-btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.cj-btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px rgba(91,124,250,.35);
}
.cj-btn-primary:hover { box-shadow: 0 6px 20px rgba(91,124,250,.5); }

/* ---------- Dropzone / textarea ---------- */
.cj-dropzone { position: relative; flex: 1; min-height: 0; }
#csvInput {
  width: 100%; height: 100%;
  resize: none;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: var(--mono);
  font-size: .86rem;
  line-height: 1.6;
  padding: 14px;
}
#csvInput::placeholder { color: var(--text-dim); opacity: .7; }
.cj-drop-overlay {
  position: absolute; inset: 0;
  display: none;
  place-items: center;
  background: rgba(91,124,250,.12);
  backdrop-filter: blur(3px);
  border: 2px dashed var(--primary);
  border-radius: 10px;
  color: var(--primary);
  font-weight: 700;
  pointer-events: none;
}
.cj-drop-overlay div { text-align: center; }
.cj-drop-overlay svg { margin-bottom: 8px; }
.cj-dropzone.cj-dragover .cj-drop-overlay { display: grid; }

/* ---------- Convert bar ---------- */
.cj-convert-bar {
  display: flex;
  align-items: center;
  justify-content: center;
}
.cj-convert {
  flex-direction: column;
  padding: 16px 12px;
  height: 100%;
  min-width: 60px;
  border-radius: 12px;
  font-size: .82rem;
  writing-mode: vertical-rl;
  gap: 10px;
}
.cj-convert svg { writing-mode: horizontal-tb; }

/* ---------- Output ---------- */
.cj-output-wrap { flex: 1; min-height: 0; overflow: auto; }
.cj-output {
  margin: 0;
  padding: 14px;
  font-family: var(--mono);
  font-size: .84rem;
  line-height: 1.6;
  white-space: pre;
  color: var(--text);
  min-height: 100%;
  tab-size: 2;
}
.cj-placeholder { color: var(--text-dim); opacity: .7; font-family: var(--font); }

/* JSON syntax highlight */
.cj-key { color: #7dd3fc; }
.cj-str { color: #86efac; }
.cj-num { color: #fca5a5; }
.cj-bool { color: #c4b5fd; }
.cj-null { color: #94a3b8; font-style: italic; }
#csvjson-app.cj-light .cj-key { color: #0369a1; }
#csvjson-app.cj-light .cj-str { color: #15803d; }
#csvjson-app.cj-light .cj-num { color: #b91c1c; }
#csvjson-app.cj-light .cj-bool { color: #6d28d9; }
#csvjson-app.cj-light .cj-null { color: #64748b; }

/* ---------- Footers / stats ---------- */
.cj-panel-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--panel-2);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  gap: 10px;
}
.cj-stats { font-size: .74rem; color: var(--text-dim); font-family: var(--mono); }
.cj-status { font-size: .74rem; font-weight: 700; }
.cj-status.ok { color: var(--accent); }
.cj-status.err { color: var(--danger); }

.cj-footer {
  text-align: center;
  padding: 8px;
  font-size: .72rem;
  color: var(--text-dim);
  background: var(--panel);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ---------- Toast ---------- */
.cj-toast {
  position: fixed;
  bottom: 26px; left: 50%;
  transform: translateX(-50%) translateY(30px);
  background: #111427;
  color: #fff;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: .84rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
  opacity: 0;
  pointer-events: none;
  transition: .3s;
  z-index: 9999;
  border: 1px solid var(--border);
}
.cj-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Scrollbars ---------- */
#csvjson-app ::-webkit-scrollbar { width: 10px; height: 10px; }
#csvjson-app ::-webkit-scrollbar-track { background: transparent; }
#csvjson-app ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
#csvjson-app ::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .cj-main {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto 1fr;
    overflow: auto;
  }
  .cj-panel { min-height: 240px; }
  .cj-convert { writing-mode: horizontal-tb; flex-direction: row; width: 100%; padding: 12px; }
  .cj-header { flex-wrap: wrap; gap: 10px; }
  .cj-title h1 { font-size: 1.05rem; }
}
@media (max-width: 520px) {
  .cj-toolbar { padding: 10px 14px; gap: 8px 12px; }
  .cj-main { padding: 12px 14px; }
  .cj-title p { display: none; }
}