:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #697386;
  --line: #e3e8f1;
  --primary: #1f5eff;
  --primary-dark: #1849c6;
  --danger: #c73545;
  --danger-soft: #fff0f2;
  --success: #18794e;
  --success-soft: #eaf8f1;
  --info: #285ea8;
  --info-soft: #edf4ff;
  --shadow: 0 10px 30px rgba(28, 45, 79, .06);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.65; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select { font: inherit; }
.site-header { background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; backdrop-filter: blur(10px); }
.header-inner { max-width: 1160px; margin: 0 auto; padding: 0 24px; min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: var(--text); font-weight: 750; letter-spacing: .01em; }
.brand:hover { text-decoration: none; }
.main-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; font-size: 14px; }
.main-nav a, .nav-button { color: #47536a; }
.inline-form { display: inline; margin: 0; }
.nav-button, .text-button { border: 0; background: transparent; padding: 0; cursor: pointer; }
.nav-button:hover, .text-button:hover { color: var(--primary); text-decoration: underline; }
.page-shell { max-width: 1160px; margin: 0 auto; padding: 38px 24px 72px; min-height: calc(100vh - 120px); }
.site-footer { text-align: center; color: #8a94a6; font-size: 12px; padding: 20px; }
h1, h2, h3 { line-height: 1.3; margin-top: 0; }
h1 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 8px; letter-spacing: -.02em; }
h2 { font-size: 19px; margin-bottom: 20px; }
p { margin: 0 0 16px; }
.subtle { color: var(--muted); font-size: 14px; }
.page-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px; box-shadow: var(--shadow); margin-bottom: 24px; }
.narrow-panel { max-width: 620px; margin-left: auto; margin-right: auto; }
.left-panel { margin-left: 0; }
.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.panel-header h1, .panel-header h2 { margin-bottom: 0; }
.action-header { align-items: flex-start; }
.summary-grid { display: grid; gap: 16px; margin-bottom: 24px; }
.two-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three-columns { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.metric-card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px 24px; box-shadow: var(--shadow); }
.metric-card span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.metric-card strong { display: block; font-size: clamp(22px, 3vw, 30px); line-height: 1.25; }
.metric-inline { text-align: right; }
.metric-inline span { display: block; color: var(--muted); font-size: 13px; }
.metric-inline strong { font-size: 26px; }
.month-switcher { display: flex; align-items: center; gap: 8px; }
.month-form input[type="month"] { min-width: 150px; text-align: center; }
.icon-button { width: 40px; height: 40px; display: inline-grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--text); font-size: 24px; line-height: 1; }
.icon-button:hover { text-decoration: none; border-color: #bac5d7; }
.icon-button.disabled { color: #c4cad4; background: #f8f9fb; }
.button { appearance: none; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--primary); border-radius: 10px; background: var(--primary); color: white; min-height: 42px; padding: 10px 18px; font-weight: 700; cursor: pointer; text-decoration: none; }
.button:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; text-decoration: none; }
.button-secondary { background: #fff; color: var(--primary); }
.button-secondary:hover { background: #f3f7ff; color: var(--primary-dark); }
.button-danger-outline { background: #fff; color: var(--danger); border-color: #e6a9b0; }
.button-danger-outline:hover { color: #fff; background: var(--danger); border-color: var(--danger); }
.button-full { width: 100%; }
.button-large { min-height: 48px; padding-left: 26px; padding-right: 26px; }
.button-group { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.bottom-action { text-align: right; }
label { display: grid; gap: 7px; color: #3f4b60; font-weight: 650; font-size: 13px; }
input, select { width: 100%; min-height: 42px; border: 1px solid #ccd4e1; border-radius: 9px; background: white; color: var(--text); padding: 9px 11px; outline: none; }
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(31, 94, 255, .12); }
.stack-form { display: grid; gap: 18px; }
.entry-form { display: grid; grid-template-columns: 180px 240px 1fr auto; gap: 16px; align-items: end; }
.time-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.wide-field { min-width: 240px; }
.user-create-form { display: grid; grid-template-columns: 1fr 1.3fr 180px auto; gap: 16px; align-items: end; }
.inline-action-form { display: flex; align-items: center; gap: 8px; }
.inline-action-form input { width: 220px; }
.alert { border-radius: 11px; padding: 13px 16px; margin-bottom: 18px; border: 1px solid transparent; }
.alert-success { background: var(--success-soft); border-color: #b6e4cc; color: var(--success); }
.alert-danger { background: var(--danger-soft); border-color: #f0c1c7; color: #9e2433; }
.alert-info { background: var(--info-soft); border-color: #c7d9f3; color: var(--info); }
.badge { display: inline-flex; align-items: center; min-height: 28px; border-radius: 999px; padding: 4px 10px; font-size: 12px; font-weight: 750; white-space: nowrap; }
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-info { background: var(--info-soft); color: var(--info); }
.badge-muted { background: #eef1f5; color: #697386; }
.entry-list { display: grid; }
.entry-row { display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 18px; padding: 16px 0; border-top: 1px solid var(--line); }
.entry-row:first-child { border-top: 0; padding-top: 0; }
.entry-row:last-child { padding-bottom: 0; }
.entry-date { color: var(--muted); font-size: 13px; }
.entry-content { display: flex; justify-content: space-between; gap: 16px; }
.entry-content strong { font-weight: 650; }
.entry-content span { white-space: nowrap; font-weight: 700; }
.entry-actions { display: flex; gap: 12px; align-items: center; font-size: 13px; }
.danger-text { color: var(--danger); }
.empty-state { color: var(--muted); padding: 34px 10px; text-align: center; }
.table-wrap { width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; color: var(--muted); font-size: 12px; font-weight: 700; padding: 11px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 15px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
.right-cell { text-align: right; }
.table-subtext { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.inactive-row { opacity: .62; }
.row-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 14px; font-size: 13px; }
.role-form select { min-height: 34px; padding: 5px 8px; width: 150px; }
.secret-card { background: #172033; color: #fff; border-radius: 16px; padding: 20px 22px; margin-bottom: 24px; display: flex; align-items: center; justify-content: space-between; gap: 18px; box-shadow: var(--shadow); }
.secret-card p { color: #c8d0df; margin: 6px 0 0; font-size: 13px; }
.eyebrow { color: #aeb9cc; font-size: 12px; font-weight: 700; letter-spacing: .05em; }
.secret-value { font-size: clamp(22px, 4vw, 30px); font-weight: 800; letter-spacing: .08em; word-break: break-all; }
.login-wrap { min-height: 65vh; display: grid; place-items: center; }
.login-card { width: min(100%, 420px); background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 32px; box-shadow: var(--shadow); }
.login-card h1 { font-size: 24px; margin-bottom: 26px; text-align: center; }
.back-link { display: inline-block; margin-bottom: 10px; font-size: 13px; }
.setup-panel { max-width: 820px; margin-left: auto; margin-right: auto; }
.setup-form { display: grid; gap: 22px; }
fieldset { border: 1px solid var(--line); border-radius: 12px; padding: 18px; margin: 0; }
legend { padding: 0 8px; font-weight: 750; }
.setup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.setup-wide { grid-column: 1 / -1; }
.setup-secret { margin-top: 20px; }
.setup-email { font-weight: 750; font-size: 18px; }
.secret-eyebrow { margin-top: 14px; }
.success-mark { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; background: var(--success-soft); color: var(--success); font-size: 30px; font-weight: 800; margin-bottom: 18px; }
@media (max-width: 900px) {
  .entry-form { grid-template-columns: 1fr 1fr; }
  .wide-field { grid-column: 1 / -1; }
  .entry-form .button { justify-self: start; }
  .user-create-form { grid-template-columns: 1fr 1fr; }
  .user-create-form .button { justify-self: start; }
  .main-nav { gap: 12px; }
}
@media (max-width: 700px) {
  .header-inner { padding: 12px 16px; align-items: flex-start; flex-direction: column; gap: 8px; }
  .main-nav { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 2px; }
  .page-shell { padding: 26px 14px 56px; }
  .page-heading { align-items: flex-start; flex-direction: column; gap: 16px; }
  .month-switcher { width: 100%; justify-content: space-between; }
  .month-form { flex: 1; }
  .month-form input { width: 100%; }
  .two-columns, .three-columns { grid-template-columns: 1fr; }
  .panel { border-radius: 13px; padding: 18px; }
  .entry-form, .user-create-form, .setup-grid { grid-template-columns: 1fr; }
  .wide-field, .setup-wide { grid-column: auto; }
  .entry-row { grid-template-columns: 72px 1fr; align-items: start; gap: 12px; }
  .entry-content { display: grid; gap: 3px; }
  .entry-actions { grid-column: 2; }
  .action-header { flex-direction: column; }
  .button-group { width: 100%; }
  .inline-action-form { width: 100%; flex-direction: column; align-items: stretch; }
  .inline-action-form input { width: 100%; }
  .table-wrap { overflow: visible; }
  .responsive-table, .responsive-table thead, .responsive-table tbody, .responsive-table tr, .responsive-table th, .responsive-table td { display: block; width: 100%; }
  .responsive-table thead { display: none; }
  .responsive-table tr { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin-bottom: 12px; }
  .responsive-table td { border: 0; padding: 7px 0; display: grid; grid-template-columns: 105px 1fr; gap: 12px; text-align: left; }
  .responsive-table td::before { content: attr(data-label); color: var(--muted); font-size: 12px; font-weight: 700; }
  .responsive-table .right-cell { text-align: left; }
  .row-actions { align-items: flex-start; }
  .secret-card { align-items: stretch; flex-direction: column; }
  .login-card { padding: 24px 20px; }
}