:root {
  --color-bg: #f4f7f5;
  --color-surface: #ffffff;
  --color-accent: #1b5e3f;
  --color-accent-dark: #123c28;
  --color-accent-soft: #e6f0ea;
  --color-border: #d9e2dc;
  --color-text: #1a1f1c;
  --color-muted: #5f6b66;
  --color-danger: #b3261e;
  --color-danger-bg: #fdecea;
  --color-danger-border: #f3c6c2;
  --font-scale: 1;
  --base-font-size: 17px;
}

html[data-font-size="large"] { --font-scale: 1.15; }
html[data-font-size="xlarge"] { --font-scale: 1.35; }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: calc(var(--base-font-size) * var(--font-scale));
  font-family: "Yu Gothic", "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;
  line-height: 1.7;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.site-header .brand {
  font-size: 1.3em;
  font-weight: 700;
  color: var(--color-accent-dark);
  text-decoration: none;
}

.font-size-toggle {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.font-size-toggle button {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  font-size: 0.9em;
  cursor: pointer;
}

.font-size-toggle button[aria-pressed="true"] {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  font-weight: 700;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

h1 {
  font-size: 1.7em;
  margin: 0 0 0.5rem;
  color: var(--color-accent-dark);
}

h2 {
  font-size: 1.3em;
  color: var(--color-accent-dark);
}

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

.mode-toggle {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.mode-toggle button {
  flex: 1;
  padding: 1rem;
  font-size: 1.05em;
  font-weight: 700;
  border-radius: 12px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.mode-toggle button[aria-pressed="true"] {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.dropzone {
  border: 3px dashed var(--color-border);
  border-radius: 16px;
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--color-muted);
  background: #fbfdfc;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone.is-dragover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.dropzone .dz-main {
  font-size: 1.15em;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.dropzone .dz-filename {
  margin-top: 1rem;
  font-weight: 700;
  color: var(--color-accent-dark);
}

.file-picker-btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.6rem 1.4rem;
  border-radius: 8px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent-dark);
  background: #fff;
  cursor: pointer;
  font-size: 1em;
}

.btn-primary {
  display: block;
  width: 100%;
  margin-top: 1.75rem;
  padding: 1rem;
  font-size: 1.15em;
  font-weight: 700;
  color: #fff;
  background: var(--color-accent);
  border: none;
  border-radius: 12px;
  cursor: pointer;
}

.btn-primary:disabled {
  background: #9db8ac;
  cursor: not-allowed;
}

.btn-secondary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1em;
  font-weight: 700;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
}

.btn-danger {
  color: var(--color-danger);
  background: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  border-radius: 8px;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  font-size: 0.95em;
}

.error-box {
  background: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  color: var(--color-danger);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  white-space: pre-wrap;
}

.error-box .error-details {
  margin-top: 1rem;
  font-size: 0.92em;
  color: #6b1a15;
}

.error-box .error-details dt {
  font-weight: 700;
  margin-top: 0.5rem;
}

.error-box .error-details dd {
  margin: 0;
  font-family: "Consolas", "Courier New", monospace;
  word-break: break-all;
}

.status-box {
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
  color: var(--color-accent-dark);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  white-space: pre-wrap;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

table.data-table th, table.data-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 0.7rem 0.6rem;
  text-align: left;
}

table.data-table th {
  color: var(--color-muted);
  font-weight: 700;
  font-size: 0.95em;
}

.field {
  margin-bottom: 1.25rem;
}

.field label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.field input[type="email"],
.field input[type="text"],
.field input[type="date"],
.field select {
  width: 100%;
  padding: 0.7rem 0.8rem;
  font-size: 1em;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.filter-form {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.5rem;
  background: var(--color-accent-soft);
  padding: 1.25rem;
  border-radius: 12px;
}

.filter-form .field { margin-bottom: 0; flex: 1 1 160px; }

.admin-nav {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.admin-nav a {
  color: var(--color-accent-dark);
  text-decoration: none;
  font-weight: 700;
  padding-bottom: 0.3rem;
  border-bottom: 3px solid transparent;
}

.admin-nav a.active {
  border-color: var(--color-accent);
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.85em;
  font-weight: 700;
}

.badge-success { background: #e6f0ea; color: var(--color-accent-dark); }
.badge-failure { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-pending { background: #fff4e0; color: #8a5a00; }

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

.result-meta {
  font-size: 1.1em;
  margin: 1.5rem 0;
}

.result-meta dt { color: var(--color-muted); font-size: 0.85em; margin-top: 0.75rem; }
.result-meta dd { margin: 0; font-size: 1.15em; font-weight: 700; }

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.checkbox-row input[type="checkbox"] {
  width: 1.3em;
  height: 1.3em;
}

.bulk-actions {
  display: flex;
  gap: 0.75rem;
  margin: 1rem 0;
}