* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f5f5f5;
  color: #333;
}

.page { min-height: 100vh; }

/* ログイン */
.login-container {
  max-width: 400px;
  margin: 100px auto;
  padding: 40px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.login-container h1 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.4rem;
  color: #1a1a1a;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #2563eb;
}

button {
  width: 100%;
  padding: 12px;
  background: #2563eb;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover { background: #1d4ed8; }
button:disabled { background: #94a3b8; cursor: not-allowed; }

.error {
  color: #dc2626;
  font-size: 0.85rem;
  margin-bottom: 12px;
  padding: 8px;
  background: #fef2f2;
  border-radius: 4px;
}

/* ナビ */
nav {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: #1e293b;
  color: #fff;
}

.nav-title { font-weight: 600; font-size: 1.1rem; }
nav #user-email { margin-left: auto; font-size: 0.85rem; color: #94a3b8; }
nav button { width: auto; padding: 6px 16px; background: #475569; font-size: 0.85rem; }
nav button:hover { background: #64748b; }

/* メイン */
main {
  max-width: 800px;
  margin: 30px auto;
  padding: 0 24px;
}

main h2 { margin-bottom: 24px; }

.export-section {
  background: #fff;
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.export-section button { margin-top: 8px; }

/* プログレス */
.progress-bar {
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  margin: 16px 0 8px;
  overflow: hidden;
}

#progress-fill {
  width: 0%;
  height: 100%;
  background: #2563eb;
  border-radius: 4px;
  transition: width 0.3s;
}

#status-text { font-size: 0.85rem; color: #64748b; }

#download-link {
  margin-top: 16px;
  padding: 16px;
  background: #f0fdf4;
  border-radius: 4px;
}

#download-link a {
  color: #16a34a;
  font-weight: 600;
  text-decoration: none;
}

#download-link a:hover { text-decoration: underline; }

#export-info { font-size: 0.85rem; color: #64748b; margin-top: 8px; }