:root {
  color-scheme: light;
  --bg: #eef3f8;
  --card: #ffffff;
  --text: #1a2b3c;
  --muted: #5b6b7c;
  --accent: #0f5c8c;
  --accent-hover: #0d4d74;
  --danger-bg: #fde8e8;
  --danger-text: #9b1c1c;
  --border: #d9e2ec;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #e8eef5 0%, #f7fafc 100%);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 8px 24px rgba(15, 45, 74, 0.06);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.6rem;
  color: #0f3d5e;
}

h2 {
  margin-top: 0;
  font-size: 1.1rem;
  color: #0f3d5e;
}

.muted { color: var(--muted); margin: 0; }

.form {
  display: grid;
  gap: 1rem;
}

label {
  display: grid;
  gap: 0.4rem;
  font-weight: 600;
}

input[type="text"],
input[type="password"] {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}

button {
  border: none;
  border-radius: 8px;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: white;
}

button:hover { background: var(--accent-hover); }

button.secondary {
  background: white;
  color: var(--text);
  border: 1px solid var(--border);
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  display: block;
}

.dropzone input { display: none; }

.dropzone span {
  display: block;
  font-size: 1.05rem;
  font-weight: 600;
}

.dropzone small {
  display: block;
  margin-top: 0.4rem;
  color: var(--muted);
}

.dropzone.dragover {
  border-color: var(--accent);
  background: #f0f7fc;
}

.hidden { display: none !important; }

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.panel-head h2 { margin: 0; }

.queue-hint {
  margin: 0 0 1rem;
  font-size: 0.92rem;
}

.file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.queue-list {
  list-style: none;
  counter-reset: queue;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fafcfe;
}

.file-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.file-order {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 999px;
  background: #e8eef5;
  color: #0f3d5e;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.file-period {
  display: block;
  font-weight: 700;
  color: #0f3d5e;
}

.file-name {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  word-break: break-all;
}

.inline-form { margin: 0; }

.danger-btn {
  background: #fff5f5;
  color: #9b1c1c;
  border: 1px solid #f5c2c2;
  padding: 0.45rem 0.7rem;
  font-size: 0.88rem;
  flex-shrink: 0;
}

.danger-btn:hover {
  background: #fde8e8;
}

.analyze-form {
  margin-top: 1.25rem;
}

.primary-wide {
  width: 100%;
}

.file-panel {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem;
  background: #fbfdff;
}

.form-hint {
  margin: 0.5rem 0 0;
  font-size: 0.92rem;
}

.alert {
  background: var(--danger-bg);
  color: var(--danger-text);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.info ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

@media (max-width: 600px) {
  .topbar { flex-direction: column; }
}