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

[hidden] { display: none !important; }

:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #666666;
  --border: #dcdcdc;
  --input-bg: #fafafa;
  --primary: #f6c62f;
  --primary-text: #1a1a1a;
  --primary-hover: #e0b021;
  --success-bg: #e8f5e9;
  --success-border: #2e7d32;
  --success-text: #1b5e20;
  --error-bg: #fdecea;
  --error-border: #c62828;
  --error-text: #8b1e1e;
  --radius: 8px;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 520px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

.intro h1 {
  font-size: 22px;
  margin: 0 0 8px;
  font-weight: 700;
}

.intro p {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 15px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 14px;
  font-weight: 600;
}

input[type='text'],
input[type='tel'] {
  width: 100%;
  padding: 12px 14px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--input-bg);
  color: var(--text);
  font-family: inherit;
}

input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
  background: #fff;
}

.file-btn {
  display: block;
  width: 100%;
  padding: 14px;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--input-bg);
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

.file-btn:hover {
  border-color: var(--primary);
}

.preview {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.preview img {
  max-width: 100%;
  max-height: 220px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.link {
  background: none;
  border: none;
  padding: 0;
  color: var(--muted);
  text-decoration: underline;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}

.hint {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.primary {
  padding: 14px 18px;
  font-size: 16px;
  font-weight: 700;
  background: var(--primary);
  color: var(--primary-text);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  margin-top: 4px;
}

.primary:hover { background: var(--primary-hover); }
.primary:disabled { opacity: 0.6; cursor: not-allowed; }

.disclaimer {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

.result {
  margin-top: 22px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid;
  font-size: 15px;
}

.result.success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-text);
}

.result.error {
  background: var(--error-bg);
  border-color: var(--error-border);
  color: var(--error-text);
}

.result h2 {
  margin: 0 0 6px;
  font-size: 17px;
}

.result p {
  margin: 0 0 4px;
}

.result dl {
  margin: 10px 0 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  font-size: 14px;
}

.result dt { font-weight: 600; }
.result dd { margin: 0; }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 10;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

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

.error-text { color: var(--error-text); font-size: 13px; margin-top: 4px; }

@media (min-width: 600px) {
  .wrap { padding-top: 32px; }
  .intro h1 { font-size: 26px; }
}