:root {
  --ischool-blue: #0066ff;
  --ischool-yellow: #ffcc00;
  --ischool-orange: #ff8000;
  --bg: #f5f8ff;
  --card: #ffffff;
  --text: #1a2b4a;
  --muted: #5c6b82;
  --border: #d6e4ff;
  --radius: 16px;
  --shadow: 0 8px 24px rgba(0, 102, 255, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Nunito", system-ui, sans-serif;
  background: linear-gradient(180deg, #eef4ff 0%, var(--bg) 120px);
  color: var(--text);
  min-height: 100vh;
}

.header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem 2rem;
  background: var(--card);
  border-bottom: 4px solid var(--ischool-yellow);
  box-shadow: var(--shadow);
}

.logo {
  height: 56px;
  width: auto;
}

.header h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--ischool-blue);
}

.subtitle {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.demo-notice {
  margin: 1rem 2rem 0;
  padding: 0.75rem 1rem;
  background: #fff8e6;
  border: 1px solid #ffd966;
  border-radius: var(--radius);
  color: #664d00;
  font-size: 0.95rem;
  font-weight: 600;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.upload-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.upload-card {
  display: block;
  cursor: pointer;
}

.upload-inner {
  min-height: 220px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  position: relative;
  overflow: hidden;
}

.upload-card:hover .upload-inner,
.upload-inner.dragover {
  border-color: var(--ischool-blue);
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.12);
}

.upload-inner.has-image {
  padding: 0;
}

.upload-inner.has-image img {
  width: 100%;
  height: 220px;
  object-fit: contain;
  background: #f0f4fa;
}

.upload-inner.has-image .upload-icon,
.upload-inner.has-image strong,
.upload-inner.has-image .upload-hint {
  display: none;
}

.upload-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--ischool-yellow);
  color: var(--text);
  font-size: 1.75rem;
  line-height: 48px;
  font-weight: 700;
}

.upload-hint {
  color: var(--muted);
  font-size: 0.9rem;
}

.actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.75rem 0 2rem;
  flex-wrap: wrap;
}

.btn-primary {
  border: none;
  border-radius: 999px;
  padding: 0.85rem 2rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--ischool-blue), #0052cc);
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(0, 102, 255, 0.28);
  transition: transform 0.15s, opacity 0.15s;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.status {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

.status.error {
  color: #c0392b;
}

.status.success {
  color: #1e7a46;
}

.artifacts {
  margin-bottom: 2rem;
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.artifacts.hidden {
  display: none;
}

.artifacts-title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ischool-blue);
}

.artifacts-run {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.artifact-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.artifact-card {
  margin: 0;
}

.artifact-card figcaption {
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.artifact-card a {
  display: block;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid var(--border);
  background: #f0f4fa;
}

.artifact-card img {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: contain;
}

.artifact-card.hidden {
  display: none;
}

.fields-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.field-group {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.field-group h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ischool-blue);
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--ischool-yellow);
  display: inline-block;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
}

.field-wide {
  grid-column: 1 / -1;
}

.field label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.35rem;
  font-size: 0.92rem;
}

.field input {
  width: 100%;
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 0.7rem 0.85rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: #fbfdff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus {
  outline: none;
  border-color: var(--ischool-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
}

.field.missing input {
  border-color: var(--ischool-orange);
}

.helper {
  display: block;
  min-height: 1.1rem;
  margin-top: 0.3rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.helper.warn {
  color: var(--ischool-orange);
  font-weight: 600;
}

.helper.info {
  color: var(--ischool-blue);
}

.nid-decode-panel {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--border);
}

.nid-decode-panel.hidden {
  display: none;
}

.nid-decode-title {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--muted);
}

.nid-decode-grid {
  margin-top: 0;
}

.field-readonly input {
  background: #f0f4fa;
  color: var(--text);
  cursor: default;
}

.field-readonly input:focus {
  box-shadow: none;
  border-color: var(--border);
}

@media (max-width: 768px) {
  .upload-row,
  .field-grid,
  .artifact-row {
    grid-template-columns: 1fr;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem;
  }
}