/* ==========================================================================
   as-system  / 精算業務システム  共通スタイル
   - 業務系 UI 向けに地味で読みやすい配色
   - ワイヤーフレームのトーンを踏襲（紺ヘッダ + 灰背景）
   - レスポンシブはタブレット〜PC（モバイル対応外）
   ========================================================================== */

/* ---------- design tokens ---------- */
:root {
    --color-bg:           #f4f5f7;
    --color-surface:      #ffffff;
    --color-border:       #d8dde3;
    --color-border-soft:  #e7eaef;
    --color-text:         #1f2937;
    --color-text-muted:   #6b7280;
    --color-text-faint:   #9ca3af;

    --color-primary:        #2c3e50;
    --color-primary-hover:  #1f2d3d;
    --color-primary-tint:   #e8eef4;
    --color-accent:         #2563eb;
    --color-accent-hover:   #1d4ed8;

    --color-danger:         #b91c1c;
    --color-danger-bg:      #fde8e8;
    --color-success:        #15803d;
    --color-success-bg:     #dcfce7;
    --color-warning:        #92400e;
    --color-warning-bg:     #fef3c7;
    --color-info:           #1e40af;
    --color-info-bg:        #dbeafe;

    --color-sidebar-bg:        #34495e;
    --color-sidebar-bg-hover:  #2c3e50;
    --color-sidebar-text:      #ecf0f1;
    --color-sidebar-section:   #95a5a6;
    --color-sidebar-active:    #5dade2;

    --shadow-card:    0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);

    --radius-sm: 2px;
    --radius-md: 4px;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI",
                 "Yu Gothic", "Hiragino Kaku Gothic ProN", "Hiragino Sans",
                 "Meiryo", "Noto Sans JP", system-ui, sans-serif;
    --font-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
}

/* ---------- reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 13px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

button { font-family: inherit; }

/* ---------- focus rings (accessibility) ---------- */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ---------- top header ---------- */
.app-header {
    background: var(--color-primary);
    color: #fff;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 3px solid var(--color-primary-hover);
    flex-shrink: 0;
}

.app-header__brand {
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.05em;
    color: #fff;
    text-decoration: none;
}
.app-header__brand:hover { text-decoration: none; opacity: 0.9; }

.app-header__user {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.85);
}

.app-header__role-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.18);
    font-size: 10.5px;
    letter-spacing: 0.04em;
}

.app-header__logout {
    display: inline-block;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    background: transparent;
    color: #fff;
    font-size: 11.5px;
    border-radius: var(--radius-sm);
    cursor: pointer;
}
.app-header__logout:hover { background: rgba(255, 255, 255, 0.1); }

/* ---------- main page layout ---------- */
.app-shell { display: flex; min-height: calc(100vh - 48px); }

.app-sidebar {
    width: 220px;
    background: var(--color-sidebar-bg);
    color: var(--color-sidebar-text);
    padding: 16px 0;
    flex-shrink: 0;
}

.app-sidebar__section {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-sidebar-section);
    padding: 8px 18px 4px;
    margin: 12px 0 2px;
    border-top: 1px solid #46637f;
}
.app-sidebar__section:first-of-type { border-top: none; margin-top: 0; }

.app-sidebar__link {
    display: block;
    padding: 7px 18px;
    color: var(--color-sidebar-text);
    text-decoration: none;
    font-size: 12.5px;
    border-left: 3px solid transparent;
}
.app-sidebar__link:hover { background: var(--color-sidebar-bg-hover); text-decoration: none; }
.app-sidebar__link.is-active {
    background: var(--color-sidebar-bg-hover);
    border-left-color: var(--color-sidebar-active);
    font-weight: 700;
}
.app-sidebar__link.is-disabled {
    color: var(--color-sidebar-section);
    cursor: not-allowed;
    opacity: 0.7;
}
.app-sidebar__link.is-disabled:hover { background: transparent; }

.app-main {
    flex: 1;
    min-width: 0;
    padding: 24px 32px;
    background: var(--color-bg);
}

.app-footer {
    padding: 12px 32px;
    font-size: 11px;
    color: var(--color-text-faint);
    text-align: right;
    border-top: 1px solid var(--color-border-soft);
    background: var(--color-surface);
}

/* ---------- page heading ---------- */
.page-breadcrumb {
    font-size: 11px;
    color: var(--color-text-faint);
    margin-bottom: 4px;
    letter-spacing: 0.05em;
}
.page-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 4px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-primary);
}
.page-lead {
    color: var(--color-text-muted);
    font-size: 12px;
    margin: 0 0 20px;
}

/* ---------- card / box ---------- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-card);
}
.card > h2 {
    font-size: 14px;
    margin: 0 0 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--color-border-soft);
    color: var(--color-primary);
}
.card > h3 { font-size: 12.5px; margin: 16px 0 8px; color: var(--color-primary); }

/* ---------- form ---------- */
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row > * { flex: 1; min-width: 0; }

.form-field { margin-bottom: 14px; }

.form-label {
    display: block;
    font-size: 11.5px;
    font-weight: 700;
    color: #333;
    margin-bottom: 4px;
}
.form-label .required {
    color: var(--color-danger);
    margin-left: 2px;
    font-weight: 700;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    border: 1px solid #bbb;
    background: #fafafa;
    padding: 8px 10px;
    font-size: 13px;
    font-family: inherit;
    color: var(--color-text);
    border-radius: var(--radius-sm);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    background: #fff;
    border-color: var(--color-accent);
}
.form-input::placeholder { color: var(--color-text-faint); }
.form-textarea { min-height: 60px; resize: vertical; }

.form-input[aria-invalid="true"],
.form-select[aria-invalid="true"],
.form-textarea[aria-invalid="true"] {
    border-color: var(--color-danger);
    background: #fff7f7;
}

.form-help {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-top: 4px;
}
.form-error {
    font-size: 11.5px;
    color: var(--color-danger);
    margin-top: 4px;
    font-weight: 600;
}

/* password strength meter (rendered by app.js) */
.pw-strength {
    margin-top: 6px;
    font-size: 11px;
    color: var(--color-text-muted);
}
.pw-strength__bar {
    display: block;
    height: 4px;
    background: #e5e7eb;
    border-radius: 2px;
    margin: 4px 0;
    overflow: hidden;
}
.pw-strength__bar > i {
    display: block;
    height: 100%;
    width: 0;
    background: var(--color-danger);
    transition: width 0.2s ease, background-color 0.2s ease;
}
.pw-strength[data-level="1"] .pw-strength__bar > i { width: 25%;  background: var(--color-danger);  }
.pw-strength[data-level="2"] .pw-strength__bar > i { width: 50%;  background: #d97706;              }
.pw-strength[data-level="3"] .pw-strength__bar > i { width: 75%;  background: #65a30d;              }
.pw-strength[data-level="4"] .pw-strength__bar > i { width: 100%; background: var(--color-success); }

/* ---------- buttons ---------- */
.btn {
    display: inline-block;
    padding: 8px 18px;
    border: 1px solid var(--color-primary);
    background: #fff;
    font-size: 12.5px;
    font-family: inherit;
    cursor: pointer;
    border-radius: var(--radius-sm);
    color: var(--color-primary);
    margin-right: 6px;
    text-decoration: none;
    transition: background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.btn:hover { background: var(--color-primary-tint); text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-hover); color: #fff; }

.btn--accent { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.btn--accent:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); color: #fff; }

.btn--danger { border-color: var(--color-danger); color: var(--color-danger); }
.btn--danger:hover { background: var(--color-danger-bg); }

.btn--ghost { border-style: dashed; }

.btn--block { display: block; width: 100%; padding: 10px 16px; margin-right: 0; }

/* ---------- flash messages ---------- */
.flash-stack { margin-bottom: 16px; }
.flash {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    margin-bottom: 8px;
    font-size: 12.5px;
    display: flex;
    gap: 8px;
    align-items: flex-start;
}
.flash--error   { background: var(--color-danger-bg);  border-color: #fbcaca; color: var(--color-danger); }
.flash--success { background: var(--color-success-bg); border-color: #bbf7d0; color: var(--color-success); }
.flash--warning { background: var(--color-warning-bg); border-color: #fde68a; color: var(--color-warning); }
.flash--info    { background: var(--color-info-bg);    border-color: #bfdbfe; color: var(--color-info); }

.flash__icon { font-weight: 700; flex-shrink: 0; }

/* ---------- table ---------- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
    background: var(--color-surface);
}
.data-table th,
.data-table td {
    border: 1px solid var(--color-border);
    padding: 7px 10px;
    text-align: left;
    vertical-align: middle;
}
.data-table th {
    background: var(--color-primary-tint);
    color: var(--color-primary);
    font-weight: 700;
}
.data-table td.is-num    { text-align: right; font-variant-numeric: tabular-nums; }
.data-table td.is-center { text-align: center; }
.data-table tbody tr:nth-child(even) { background: #fafafa; }
.data-table tbody tr:hover { background: var(--color-primary-tint); }

/* ---------- tag (status pills) ---------- */
.tag {
    display: inline-block;
    font-size: 10.5px;
    padding: 2px 8px;
    border-radius: 10px;
    background: #eee;
    color: #555;
}
.tag--ok    { background: var(--color-success-bg); color: var(--color-success); }
.tag--warn  { background: var(--color-warning-bg); color: var(--color-warning); }
.tag--err   { background: var(--color-danger-bg);  color: var(--color-danger); }
.tag--info  { background: var(--color-info-bg);    color: var(--color-info); }

/* ---------- KPI card grid ---------- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}
.kpi {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    box-shadow: var(--shadow-card);
}
.kpi__lbl { font-size: 11.5px; color: var(--color-text-muted); }
.kpi__val { font-size: 22px; font-weight: 700; color: var(--color-primary); margin-top: 4px; }

/* ---------- shortcut grid (dashboards) ---------- */
.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 4px;
}
.shortcut {
    display: block;
    padding: 14px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow-card);
    transition: border-color 0.12s ease, transform 0.12s ease;
}
.shortcut:hover {
    border-color: var(--color-accent);
    text-decoration: none;
    transform: translateY(-1px);
}
.shortcut__title {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 13px;
    margin-bottom: 2px;
}
.shortcut__desc {
    font-size: 11.5px;
    color: var(--color-text-muted);
}
.shortcut.is-disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ---------- auth (login / password change) layout ---------- */
.auth-shell {
    min-height: calc(100vh - 48px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 60px 16px 40px;
}
.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px 28px 22px;
    box-shadow: var(--shadow-card);
}
.auth-card__title {
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    color: var(--color-primary);
    margin: 0 0 6px;
}
.auth-card__sub {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 11.5px;
    margin-bottom: 20px;
}
.auth-card__footer {
    text-align: center;
    margin-top: 14px;
    font-size: 11.5px;
    color: var(--color-text-muted);
}

/* ---------- utilities ---------- */
.u-mt-0  { margin-top: 0 !important; }
.u-mt-12 { margin-top: 12px !important; }
.u-mt-16 { margin-top: 16px !important; }
.u-mt-24 { margin-top: 24px !important; }
.u-mb-0  { margin-bottom: 0 !important; }
.u-mb-8  { margin-bottom: 8px !important; }
.u-mb-12 { margin-bottom: 12px !important; }
.u-mb-16 { margin-bottom: 16px !important; }
.u-text-muted  { color: var(--color-text-muted); }
.u-text-danger { color: var(--color-danger); }
.u-text-center { text-align: center; }
.u-text-left   { text-align: left; }
.u-flex        { display: flex; gap: 8px; align-items: center; }
.u-flex-end    { display: flex; gap: 8px; justify-content: flex-end; }

/* ---------- inline-extracted helpers (Phase 3.E CSP strict)
 * These classes replace removed inline style="..." attributes so the
 * CSP can drop 'unsafe-inline' from style-src. Keep the visual output
 * byte-identical to the previous inline declarations.
 */
.u-card-narrow     { max-width: 560px; }
.u-table-fixed     { width: 100%; border-collapse: collapse; }
.u-th-left         { text-align: left; }
.u-th-center       { text-align: center; }
.u-form-actions    { margin-top: 24px; }
.u-form-inline     { display: inline-block; margin-left: 4px; }
.u-radio-row       { margin-right: 16px; }
.u-checkbox-inline { display: inline-flex; align-items: center; gap: 8px; }
.u-label-inline    { margin-right: 6px; }
.u-self-lockout-warn {
    background: #fff8e1;
    padding: 12px;
    border: 1px solid #ffd54f;
}
.u-self-lockout-warn-text {
    color: #b71c1c;
}

/* ---------- visually hidden (screen reader) ---------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- tablet narrow handling ---------- */
@media (max-width: 900px) {
    .app-sidebar { width: 180px; }
    .app-main { padding: 18px 18px; }
}