:root {
  --color-primary: #1a3a5c;
  --color-primary-dark: #10253c;
  --color-accent: #d98c2b;
  --color-bg: #f4f6f8;
  --color-card: #ffffff;
  --color-border: #d9e0e6;
  --color-text: #202a33;
  --color-text-sub: #5a6b78;
  --color-error: #c0392b;
  --color-info-bg: #eaf1f8;
  --color-warn-bg: #fbeeda;
  --radius: 8px;
}

* { box-sizing: border-box; }

/* hidden属性は常にdisplay:noneを保証する(個別クラスでdisplayを指定しても上書きされない) */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
}

a { color: var(--color-primary); }

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
}

.site-header {
  background: var(--color-primary);
  color: #fff;
}
.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.logo { font-size: 1.25rem; font-weight: bold; }
.header-nav { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.header-nav a { color: #fff; text-decoration: underline; }

.lead {
  color: var(--color-text-sub);
  margin: 16px 0;
}

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.card-title {
  margin-top: 0;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 8px;
}

.mode-tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 8px 14px;
  cursor: pointer;
  font-size: 0.95rem;
}
.tab-btn.is-active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.pro-tag {
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 10px;
  margin-left: 4px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
  max-width: 420px;
}
.form-row label { font-weight: bold; font-size: 0.9rem; }
.form-row input, .form-row select {
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
}
.form-row input.input-error, .form-row select.input-error {
  border-color: var(--color-error);
}
.error-msg {
  color: var(--color-error);
  font-size: 0.85rem;
  min-height: 1.1em;
}

.result-box {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  background: var(--color-info-bg);
  border: 1px dashed var(--color-primary);
  border-radius: var(--radius);
  padding: 14px;
  margin: 16px 0;
}
.result-box code {
  font-size: 1.05rem;
  word-break: break-all;
  flex: 1 1 auto;
}
.result-box code.is-placeholder {
  color: var(--color-text-sub);
  font-size: 0.95rem;
}

.floating-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(8px);
  background: var(--color-primary);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 200;
}
.floating-toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-block;
  border: none;
  border-radius: var(--radius);
  padding: 10px 18px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline {
  background: #fff;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn-text {
  background: none;
  color: var(--color-text-sub);
  text-decoration: underline;
  padding: 10px 6px;
}
.btn-small { padding: 6px 12px; font-size: 0.85rem; }
.btn[disabled], .btn.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.file-btn { position: relative; overflow: hidden; }
.file-btn input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.ledger-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.ledger-count { font-weight: bold; }
.ledger-filters { display: flex; gap: 8px; flex-wrap: wrap; }
.ledger-filters select, .ledger-filters input {
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.banner {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 14px;
  font-size: 0.9rem;
}
.banner-info { background: var(--color-info-bg); border: 1px solid var(--color-primary); }
.banner-warn { background: var(--color-warn-bg); border: 1px solid var(--color-accent); border-radius: 0; text-align: center; }

.table-scroll { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.data-table th, .data-table td {
  border: 1px solid var(--color-border);
  padding: 8px 10px;
  text-align: left;
  white-space: nowrap;
}
.data-table th { background: var(--color-info-bg); }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 16px;
}
.compare-table th, .compare-table td {
  border: 1px solid var(--color-border);
  padding: 10px;
  text-align: center;
}
.compare-table td:first-child { text-align: left; }
.compare-table th { background: var(--color-info-bg); }

.pro-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.pro-locked-note { color: var(--color-text-sub); }

.seo-text { color: var(--color-text-sub); }

.site-footer {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 16px 40px;
  color: var(--color-text-sub);
  font-size: 0.85rem;
}
.sister-links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}
.modal-content {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  max-width: 420px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.modal-wide { max-width: 560px; }
.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}
#unlockCodeInput {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  margin-top: 8px;
}
.order-selects { display: flex; gap: 6px; flex-wrap: wrap; }
.order-selects select { padding: 6px; border-radius: var(--radius); border: 1px solid var(--color-border); }
.hint { color: var(--color-text-sub); font-size: 0.85rem; }
.modal-divider { border: none; border-top: 1px solid var(--color-border); margin: 20px 0; }

@media (max-width: 600px) {
  .form-row { max-width: 100%; }
  .header-inner { flex-direction: column; align-items: flex-start; }
}