/* Art direction: 教育・評価ツール → 清潔感・信頼感・機能的
   Palette: teal primary, warm neutrals
   Typography: Noto Sans JP (body/UI) + Inter (numbers/data)
   Density: balanced */

:root, [data-theme="light"] {
  --color-bg:              #f5f7f8;
  --color-surface:         #ffffff;
  --color-surface-2:       #f9fafb;
  --color-surface-offset:  #f0f2f4;
  --color-surface-offset-2:#e8ebee;
  --color-surface-dynamic: #dde1e5;
  --color-divider:         #d8dce0;
  --color-border:          #cdd1d6;
  --color-text:            #1a2433;
  --color-text-muted:      #6b7888;
  --color-text-faint:      #adb5be;
  --color-text-inverse:    #f9fafb;
  --color-primary:         #0d7a7f;
  --color-primary-hover:   #0a5f63;
  --color-primary-active:  #074547;
  --color-primary-highlight: #d0eaeb;
  --color-success:         #2d7a3a;
  --color-success-bg:      #d4edda;
  --color-error:           #c0392b;
  --color-error-bg:        #fde8e6;
  --color-warning:         #b05d00;
  --color-warning-bg:      #fff3cd;
  --color-info:            #0066aa;
  --color-info-bg:         #d6eaf8;
  --color-cat-a:           #0d7a7f;
  --color-cat-b:           #7a5c0d;
  --color-cat-c:           #5c0d7a;
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-full: 9999px;
  --shadow-sm:   0 1px 3px rgba(26,36,51,0.08);
  --shadow-md:   0 4px 12px rgba(26,36,51,0.10);
  --shadow-lg:   0 8px 24px rgba(26,36,51,0.14);
  --transition:  160ms cubic-bezier(0.16,1,0.3,1);
  --space-1: 0.25rem; --space-2: 0.5rem;  --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem;  --space-8: 2rem;    --space-10: 2.5rem;
  --space-12: 3rem;   --space-16: 4rem;
  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --font-body:    'Noto Sans JP', 'Helvetica Neue', sans-serif;
  --font-data:    'Inter', 'Noto Sans JP', sans-serif;
  --content-default: 1100px;
  --content-narrow:  680px;
}

[data-theme="dark"] {
  --color-bg:              #141b22;
  --color-surface:         #1c2530;
  --color-surface-2:       #222e3a;
  --color-surface-offset:  #1e2a36;
  --color-surface-offset-2:#28353f;
  --color-surface-dynamic: #2f3e4a;
  --color-divider:         #2a3845;
  --color-border:          #354555;
  --color-text:            #d4dce6;
  --color-text-muted:      #7a8a9a;
  --color-text-faint:      #4a5a6a;
  --color-text-inverse:    #1a2433;
  --color-primary:         #3da8ad;
  --color-primary-hover:   #1e9096;
  --color-primary-active:  #107277;
  --color-primary-highlight:#1e3538;
  --color-success:         #4aaa5c;
  --color-success-bg:      #1e3322;
  --color-error:           #e05a4a;
  --color-error-bg:        #3a1e1a;
  --color-warning:         #d4840a;
  --color-warning-bg:      #2e2208;
  --color-info:            #4a9ecc;
  --color-info-bg:         #162030;
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.25);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.35);
  --shadow-lg:   0 8px 24px rgba(0,0,0,0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #141b22; --color-surface: #1c2530; --color-surface-2: #222e3a;
    --color-surface-offset: #1e2a36; --color-surface-offset-2: #28353f;
    --color-surface-dynamic: #2f3e4a; --color-divider: #2a3845; --color-border: #354555;
    --color-text: #d4dce6; --color-text-muted: #7a8a9a; --color-text-faint: #4a5a6a;
    --color-text-inverse: #1a2433; --color-primary: #3da8ad; --color-primary-hover: #1e9096;
    --color-primary-active: #107277; --color-primary-highlight: #1e3538;
    --color-success: #4aaa5c; --color-success-bg: #1e3322; --color-error: #e05a4a;
    --color-error-bg: #3a1e1a; --color-warning: #d4840a; --color-warning-bg: #2e2208;
    --color-info: #4a9ecc; --color-info-bg: #162030;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.25); --shadow-md: 0 4px 12px rgba(0,0,0,0.35);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.45);
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body { min-height: 100dvh; font-family: var(--font-body); font-size: var(--text-base); color: var(--color-text); background: var(--color-bg); line-height: 1.6; }
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
h1,h2,h3,h4,h5,h6 { line-height: 1.25; font-weight: 700; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
table { border-collapse: collapse; width: 100%; }
button { cursor: pointer; }
::selection { background: var(--color-primary-highlight); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: var(--radius-sm); }

/* Layout */
.app-header { background: var(--color-surface); border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
.header-inner { max-width: var(--content-default); margin: 0 auto; padding: 0 var(--space-6); display: flex; align-items: center; justify-content: space-between; height: 56px; }
.header-left { display: flex; align-items: center; gap: var(--space-8); }
.header-right { display: flex; align-items: center; gap: var(--space-4); }
.logo { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.logo-text { font-size: var(--text-sm); font-weight: 700; color: var(--color-text); white-space: nowrap; }
.main-nav { display: flex; gap: var(--space-1); }
.nav-link { font-size: var(--text-sm); color: var(--color-text-muted); padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); transition: color var(--transition), background var(--transition); text-decoration: none; white-space: nowrap; }
.nav-link:hover { color: var(--color-text); background: var(--color-surface-offset); }
.nav-link.active { color: var(--color-primary); background: var(--color-primary-highlight); }
.user-badge { font-size: var(--text-xs); color: var(--color-text-muted); display: flex; align-items: center; gap: var(--space-2); }
.role-tag { background: var(--color-primary-highlight); color: var(--color-primary); padding: 1px 6px; border-radius: var(--radius-full); font-size: 0.7rem; font-weight: 600; text-transform: uppercase; }

.page-wrap { max-width: var(--content-default); margin: 0 auto; padding: var(--space-8) var(--space-6); }
.page-wrap-narrow { max-width: var(--content-narrow); margin: 0 auto; padding: var(--space-8) var(--space-6); }

/* Cards */
.card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); }
.card-sm { padding: var(--space-4); }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-4); }
.card-title { font-size: var(--text-lg); font-weight: 700; color: var(--color-text); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-5); border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 600; border: none; cursor: pointer; transition: background var(--transition), color var(--transition), box-shadow var(--transition); text-decoration: none; white-space: nowrap; }
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-sm); color: white; text-decoration: none; }
.btn-secondary { background: var(--color-surface-offset); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-surface-offset-2); color: var(--color-text); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--color-text-muted); border: 1px solid var(--color-border); }
.btn-ghost:hover { background: var(--color-surface-offset); color: var(--color-text); text-decoration: none; }
.btn-danger { background: var(--color-error); color: white; }
.btn-danger:hover { opacity: 0.9; text-decoration: none; color: white; }
.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); }
.btn-lg { padding: var(--space-3) var(--space-8); font-size: var(--text-base); }
.btn-icon { background: none; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2); color: var(--color-text-muted); transition: all var(--transition); display: flex; align-items: center; justify-content: center; }
.btn-icon:hover { background: var(--color-surface-offset); color: var(--color-text); }

/* Forms */
.form-group { margin-bottom: var(--space-5); }
.form-label { display: block; font-size: var(--text-sm); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-2); }
.form-label .req { color: var(--color-error); margin-left: 2px; }
.form-control { width: 100%; padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-text); font-size: var(--text-base); transition: border-color var(--transition), box-shadow var(--transition); }
.form-control:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-highlight); }
.form-control::placeholder { color: var(--color-text-faint); }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-hint { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }
.form-error { font-size: var(--text-xs); color: var(--color-error); margin-top: var(--space-1); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.form-actions { display: flex; gap: var(--space-3); margin-top: var(--space-6); }

/* Alerts */
.alert { padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); font-size: var(--text-sm); margin-bottom: var(--space-4); }
.alert-success { background: var(--color-success-bg); color: var(--color-success); border: 1px solid color-mix(in oklab, var(--color-success) 30%, transparent); }
.alert-error   { background: var(--color-error-bg);   color: var(--color-error);   border: 1px solid color-mix(in oklab, var(--color-error) 30%, transparent); }
.alert-info    { background: var(--color-info-bg);    color: var(--color-info);    border: 1px solid color-mix(in oklab, var(--color-info) 30%, transparent); }
.alert-warning { background: var(--color-warning-bg); color: var(--color-warning); border: 1px solid color-mix(in oklab, var(--color-warning) 30%, transparent); }

/* Tables */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
.data-table { width: 100%; font-size: var(--text-sm); font-variant-numeric: tabular-nums; }
.data-table th { background: var(--color-surface-2); color: var(--color-text-muted); font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; padding: var(--space-3) var(--space-4); text-align: left; border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 1; }
.data-table td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-divider); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--color-surface-offset); }
.data-table .actions { display: flex; gap: var(--space-2); }

/* Tabs */
.tabs { border-bottom: 2px solid var(--color-border); display: flex; gap: 0; margin-bottom: var(--space-6); }
.tab-btn { padding: var(--space-3) var(--space-5); font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); background: none; border: none; border-bottom: 2px solid transparent; margin-bottom: -2px; cursor: pointer; transition: color var(--transition), border-color var(--transition); }
.tab-btn:hover { color: var(--color-text); }
.tab-btn.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* Score input grid */
.competency-grid { display: grid; gap: var(--space-4); }
.competency-category { margin-bottom: var(--space-2); }
.competency-category-label { font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); padding: var(--space-2) 0; border-bottom: 1px solid var(--color-divider); margin-bottom: var(--space-3); display: flex; align-items: center; gap: var(--space-2); }
.cat-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.cat-a .cat-dot { background: var(--color-cat-a); }
.cat-b .cat-dot { background: var(--color-cat-b); }
.cat-c .cat-dot { background: var(--color-cat-c); }
.competency-row { display: grid; grid-template-columns: 1fr auto; gap: var(--space-4); align-items: start; background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); margin-bottom: var(--space-3); }
.competency-name { font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-2); }
.competency-reason { width: 100%; }
.score-selector { display: flex; gap: var(--space-2); align-items: center; }
.score-radio { display: none; }
.score-label { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border: 2px solid var(--color-border); border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 700; cursor: pointer; transition: all var(--transition); font-family: var(--font-data); color: var(--color-text-muted); }
.score-radio:checked + .score-label { background: var(--color-primary); border-color: var(--color-primary); color: white; }
.score-label:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* KPI cards */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--space-4); margin-bottom: var(--space-6); }
.kpi-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-5); }
.kpi-label { font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-2); }
.kpi-value { font-size: var(--text-xl); font-weight: 700; color: var(--color-text); font-family: var(--font-data); font-variant-numeric: tabular-nums; }
.kpi-sub { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }

/* Charts */
.chart-container { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); margin-bottom: var(--space-6); }
.chart-title { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-4); }
.chart-canvas-wrap { position: relative; width: 100%; }

/* Page title */
.page-title { font-size: var(--text-xl); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-2); }
.page-subtitle { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-6); }

/* Status badges */
.badge { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: 600; }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-error   { background: var(--color-error-bg);   color: var(--color-error); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-info    { background: var(--color-info-bg);    color: var(--color-info); }
.badge-neutral { background: var(--color-surface-offset-2); color: var(--color-text-muted); }

/* Auth pages */
.auth-wrap { min-height: 100dvh; display: flex; align-items: center; justify-content: center; background: var(--color-bg); padding: var(--space-6); }
.auth-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: var(--space-10); width: 100%; max-width: 440px; box-shadow: var(--shadow-lg); }
.auth-logo { display: flex; align-items: center; gap: var(--space-3); justify-content: center; margin-bottom: var(--space-8); }
.auth-title { font-size: var(--text-lg); font-weight: 700; text-align: center; margin-bottom: var(--space-6); }
.auth-footer { text-align: center; font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-6); }

/* Empty state */
.empty-state { display: flex; flex-direction: column; align-items: center; padding: var(--space-16) var(--space-8); text-align: center; color: var(--color-text-muted); }
.empty-state svg { width: 48px; height: 48px; margin-bottom: var(--space-4); color: var(--color-text-faint); }
.empty-state h3 { font-size: var(--text-base); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-2); }
.empty-state p { font-size: var(--text-sm); max-width: 36ch; margin-bottom: var(--space-6); }

/* Grid utilities */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-4); }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mt-4 { margin-top: var(--space-4); }
.text-muted { color: var(--color-text-muted); font-size: var(--text-sm); }
.text-right { text-align: right; }

/* Input period status */
.period-open   { color: var(--color-success); font-size: var(--text-xs); font-weight: 600; }
.period-closed { color: var(--color-error);   font-size: var(--text-xs); font-weight: 600; }

/* Responsive */
@media (max-width: 768px) {
  .header-inner { padding: 0 var(--space-4); }
  .main-nav { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .page-wrap, .page-wrap-narrow { padding: var(--space-4); }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .competency-row { grid-template-columns: 1fr; }
  .score-selector { flex-wrap: wrap; }
}

/* Score table in list view */
.score-table th, .score-table td { font-size: var(--text-xs); padding: var(--space-2) var(--space-3); text-align: center; }
.score-table th:first-child, .score-table td:first-child { text-align: left; padding-left: var(--space-4); }
.score-num { font-family: var(--font-data); font-weight: 700; font-variant-numeric: tabular-nums; }
.score-0 { color: var(--color-text-faint); }
.score-1, .score-2 { color: var(--color-warning); }
.score-3, .score-4 { color: var(--color-primary); }
.score-5 { color: var(--color-success); }

/* Admin */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-5); }
.filter-bar { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); margin-bottom: var(--space-4); display: flex; gap: var(--space-4); flex-wrap: wrap; align-items: flex-end; }
.filter-bar .form-group { margin-bottom: 0; }