/* ---- Article Rewriter: Dark UI ---- */

:root{
  --arw-bg: #0b0d12;
  --arw-card: #0f1219;
  --arw-card-2: #121622;
  --arw-text: #e7eaf0;
  --arw-muted: #a9b0c2;
  --arw-accent: #6ea8fe;
  --arw-accent-2: #9b8cff;
  --arw-border: #23283a;
  --arw-success: #1fbf75;
  --arw-error: #ff5c77;
  --arw-shadow: 0 10px 30px rgba(0,0,0,0.45);
  --arw-radius: 18px;
  --arw-radius-sm: 12px;
  --arw-focus: 0 0 0 3px rgba(110,168,254,0.25);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1000px 600px at 20% -10%, rgba(110,168,254,0.08), transparent),
              radial-gradient(1000px 600px at 80% 110%, rgba(155,140,255,0.08), transparent),
              var(--arw-bg);
  color: var(--arw-text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  line-height: 1.55;
}

.arw-wrapper{
  padding: 28px 16px;
}

.arw-card{
  max-width: 980px;
  margin: 0 auto;
  background: linear-gradient(180deg, var(--arw-card), var(--arw-card-2));
  border: 1px solid var(--arw-border);
  border-radius: var(--arw-radius);
  box-shadow: var(--arw-shadow);
  padding: 22px;
}

.arw-header{
  margin-bottom: 10px;
}
.arw-header h2{
  margin: 0 0 6px;
  font-size: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.arw-subtitle{
  margin: 0;
  color: var(--arw-muted);
  font-size: 14px;
}

.arw-row{
  margin-top: 16px;
}

.arw-label{
  display: block;
  margin: 0 0 8px;
  color: var(--arw-muted);
  font-weight: 600;
  letter-spacing: .3px;
  font-size: 13px;
}

.arw-textarea{
  width: 100%;
  min-height: 200px;
  background: #0b0e16;
  color: var(--arw-text);
  border: 1px solid var(--arw-border);
  border-radius: var(--arw-radius-sm);
  padding: 14px 16px;
  outline: none;
  resize: vertical;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.arw-textarea:focus{
  border-color: var(--arw-accent);
  box-shadow: var(--arw-focus);
}

.arw-controls{
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.arw-select-wrap{
  flex: 1 1 240px;
}

.arw-select{
  width: 100%;
  background: #0b0e16;
  color: var(--arw-text);
  border: 1px solid var(--arw-border);
  border-radius: var(--arw-radius-sm);
  padding: 12px 14px;
  outline: none;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.arw-select:focus{
  border-color: var(--arw-accent-2);
  box-shadow: var(--arw-focus);
}

.arw-btn{
  appearance: none;
  border: 1px solid var(--arw-border);
  background: #0d1018;
  color: var(--arw-text);
  padding: 12px 16px;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform .06s ease, border-color .2s ease, background .2s ease, opacity .2s ease;
}
.arw-btn:hover{
  transform: translateY(-1px);
  border-color: #2d3550;
}
.arw-btn:disabled{
  opacity: .5;
  cursor: not-allowed;
}
.arw-btn-primary{
  background: linear-gradient(90deg, #233055, #1a2441);
  border-color: #2a3a63;
}
.arw-btn-primary:hover{
  background: linear-gradient(90deg, #2a3a63, #213054);
}
.arw-btn-ghost{
  background: #0b0e16;
}
.arw-btn-active{
  outline: 2px dashed var(--arw-accent);
  outline-offset: 2px;
}

.arw-loader{
  display: none;
  margin-top: 14px;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  background: #0b0f19;
  border: 1px dashed #25314b;
  border-radius: var(--arw-radius-sm);
  color: var(--arw-muted);
}
.arw-spinner{
  width: 18px; height: 18px;
  border: 2px solid #2a3550;
  border-top-color: var(--arw-accent);
  border-radius: 50%;
  display: inline-block;
  animation: arw-spin 800ms linear infinite;
}
@keyframes arw-spin{
  to{ transform: rotate(360deg); }
}
.arw-loader-text{ font-size: 13px; }

.arw-message{
  display: none;
  margin-top: 12px;
  padding: 10px 12px;
  background: #0b0f19;
  border: 1px solid #2a3249;
  border-radius: var(--arw-radius-sm);
  font-size: 14px;
  color: var(--arw-text);
}
.arw-message-success{ border-color: rgba(31,191,117,.45); color: #d8ffef; }
.arw-message-error{ border-color: rgba(255,92,119,.45); color: #ffd8de; }

.arw-result{
  min-height: 160px;
  background: #0b0e16;
  color: var(--arw-text);
  border: 1px solid var(--arw-border);
  border-radius: var(--arw-radius-sm);
  padding: 14px 16px;
  white-space: pre-wrap;
}
.arw-result[contenteditable="true"]{
  outline: none;
  box-shadow: var(--arw-focus);
  border-color: var(--arw-accent);
}

.arw-stats{
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--arw-muted);
  font-size: 13px;
  margin-top: 8px;
}
.arw-stat strong{ color: var(--arw-text); }

.arw-actions{
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.arw-footer{
  margin-top: 16px;
  border-top: 1px solid var(--arw-border);
  padding-top: 12px;
}
.arw-note{
  color: var(--arw-muted);
  font-size: 13px;
  margin: 0;
}

/* Responsive */
@media (max-width: 640px){
  .arw-btn{ width: 100%; justify-content: center; }
  .arw-controls{ align-items: stretch; }
}