:root {
  --navy: #0f172a;
  --navy-2: #1e293b;
  --accent: #f39c12;
  --accent-2: #2ecc71;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --card-bg: #16213a;
  --border: #2a3a5c;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: 'Segoe UI', 'Malgun Gothic', sans-serif;
  background: var(--navy);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.hero {
  text-align: center;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: 28px;
  line-height: 1.35;
  margin: 0 0 12px;
}

.hero .sub {
  color: var(--muted);
  font-size: 15px;
  margin: 0;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  overflow: hidden;
  padding: 20px;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: rgba(243, 156, 18, 0.06);
}

.dz-empty {
  text-align: center;
  color: var(--muted);
}

.dz-icon { font-size: 40px; margin-bottom: 8px; }
.dz-hint { font-size: 13px; margin-top: 6px; }

.preview {
  max-width: 100%;
  max-height: 320px;
  border-radius: 8px;
  display: block;
}

.btn {
  width: 100%;
  padding: 14px;
  margin-top: 16px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #1a1a1a;
}
.btn-primary:not(:disabled):hover { background: #ffb733; }

.btn-outline {
  background: transparent;
  color: var(--accent-2);
  border: 1.5px solid var(--accent-2);
}
.btn-outline:hover { background: rgba(46, 204, 113, 0.1); }

.result {
  margin-top: 20px;
  padding: 16px;
  border-radius: 10px;
  background: #11182b;
  border: 1px solid var(--border);
}

.loading {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin { to { transform: rotate(360deg); } }

.result-text {
  white-space: pre-wrap;
  line-height: 1.6;
  font-size: 14.5px;
}

.inquiry-area {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.inquiry-desc {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 12px;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12.5px;
  padding: 24px 20px 40px;
}