/* =========================================================
   Kintai - Design System v2
   業務SaaS / モダン・白基調・単色ブルーアクセント
   ========================================================= */

:root {
  /* Brand */
  --primary: #2563EB;          /* brand blue (主要アクション・アクティブ) */
  --primary-light: #3B82F6;
  --primary-dark: #1D4ED8;
  --primary-bg: #EFF6FF;       /* 淡いアクセント面 */

  /* Semantic */
  --accent: #059669;           /* 成功 / 出勤 */
  --accent-bg: #ECFDF5;
  --danger: #DC2626;
  --danger-bg: #FEF2F2;
  --warning: #D97706;
  --warning-bg: #FFFBEB;

  /* Surface */
  --bg: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-soft: #F1F5F9;
  --bg-subtle: #F8FAFC;

  /* Text */
  --ink: #0F172A;
  --text: #0F172A;
  --text-muted: #64748B;
  --text-subtle: #94A3B8;
  --on-primary: #FFFFFF;

  /* Lines */
  --border: #E5E7EB;
  --border-strong: #CBD5E1;
  --ring: 0 0 0 3px rgba(37, 99, 235, 0.18);

  /* Radius */
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 14px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);
  --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-md: 0 6px 16px -4px rgba(15, 23, 42, .10), 0 2px 4px rgba(15, 23, 42, .05);
  --shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, .18);
}

/* ── Reset / Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN',
               'Yu Gothic', 'Noto Sans JP', 'Meiryo', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 14px;
  font-feature-settings: 'cv11', 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
button, input, select, textarea { font-family: inherit; }
a { color: inherit; }

/* 数字は等幅・タビュラー（時刻・数値が並ぶ業務SaaSの基本） */
.tnum, td, th, .stat-value, .clock-time,
input[type="time"], input[type="number"], input[type="date"] {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum';
}

/* ── Icon utility (lucide風 SVG をインラインで使う想定) ── */
.icon { width: 16px; height: 16px; stroke-width: 2; stroke: currentColor; fill: none;
        stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; display: inline-block; vertical-align: -3px; }
.icon-lg { width: 20px; height: 20px; }
.icon-xl { width: 28px; height: 28px; }

/* =========================================================
   Login
   ========================================================= */
.login-body {
  display: flex; align-items: center; justify-content: center; min-height: 100vh;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(37,99,235,.18), transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 100%, rgba(99,102,241,.12), transparent 60%),
    #0B1220;
  padding: 24px;
}
.login-card {
  background: var(--bg-card); border-radius: 16px;
  padding: 36px 32px 32px; width: 100%; max-width: 400px;
  box-shadow: 0 24px 60px -12px rgba(0, 0, 0, .35), 0 0 0 1px rgba(255,255,255,.04);
}
.login-logo {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, #2563EB, #1D4ED8);
  color: white; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px; box-shadow: 0 8px 20px -4px rgba(37,99,235,.45);
}
.login-logo .icon { width: 28px; height: 28px; stroke-width: 2.2; }
.login-title {
  font-size: 1.35rem; font-weight: 700; text-align: center;
  color: var(--ink); margin-bottom: 4px; letter-spacing: -0.01em;
}
.login-sub {
  font-size: 0.85rem; color: var(--text-muted);
  text-align: center; margin-bottom: 28px;
}

/* =========================================================
   Form
   ========================================================= */
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block; font-size: 0.78rem; font-weight: 600;
  color: var(--text); margin-bottom: 6px; letter-spacing: 0.01em;
}
input, select, textarea {
  width: 100%; height: 38px; padding: 0 12px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 0.92rem; outline: none;
  background: white; color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
textarea { height: auto; padding: 10px 12px; min-height: 80px; resize: vertical; }
input:hover, select:hover, textarea:hover { border-color: var(--border-strong); }
input:focus, select:focus, textarea:focus {
  border-color: var(--primary); box-shadow: var(--ring);
}
input::placeholder, textarea::placeholder { color: var(--text-subtle); }
select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat; background-position: right 10px center;
  padding-right: 32px; appearance: none; -webkit-appearance: none;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn-primary {
  width: 100%; height: 40px; padding: 0 18px;
  background: var(--primary); color: white;
  font-size: 0.9rem; font-weight: 600;
  border: 1px solid var(--primary); border-radius: 8px;
  cursor: pointer; transition: background .15s, box-shadow .15s, transform .05s;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible { box-shadow: var(--ring); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; }

.btn-accent { background: var(--accent); border-color: var(--accent); }
.btn-accent:hover { background: #047857; border-color: #047857; }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: #B91C1C; border-color: #B91C1C; }

.btn-outline {
  height: 36px; padding: 0 14px;
  background: white; border: 1px solid var(--border);
  border-radius: 8px; font-size: 0.85rem; font-weight: 500;
  cursor: pointer; color: var(--text);
  transition: border-color .15s, background .15s, color .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-outline:hover { background: var(--bg-soft); border-color: var(--border-strong); }
.btn-outline:focus-visible { box-shadow: var(--ring); border-color: var(--primary); }
.btn-sm { height: 30px; padding: 0 12px; font-size: 0.8rem; }

.error-msg { color: var(--danger); font-size: 0.82rem; margin-top: 10px; text-align: center; }
.success-msg { color: var(--accent); font-size: 0.82rem; margin-top: 10px; text-align: center; }
.hidden { display: none !important; }

/* =========================================================
   Navbar  (白基調 + 下罫線)
   ========================================================= */
.navbar {
  background: var(--bg-card); color: var(--ink);
  padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between;
  height: 56px; position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid var(--border);
}
.navbar-brand {
  font-weight: 700; font-size: 0.95rem; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 10px; color: var(--ink);
}
.navbar-brand .brand-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, #2563EB, #1D4ED8);
  color: white; display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 6px -1px rgba(37,99,235,.4);
}
.navbar-brand .brand-mark .icon { width: 18px; height: 18px; stroke-width: 2.4; }
.navbar-brand .brand-sub {
  font-size: 0.72rem; font-weight: 500;
  color: var(--text-muted); padding: 2px 8px;
  background: var(--bg-soft); border-radius: 4px; margin-left: 2px;
}

.navbar-user {
  font-size: 0.85rem; color: var(--text);
  display: flex; align-items: center; gap: 10px;
}
.navbar-user .nav-link {
  padding: 6px 10px; border-radius: 6px; border: 1px solid var(--border);
  background: white; color: var(--text-muted);
  font-size: 0.78rem; font-weight: 500; text-decoration: none;
  display: inline-flex; align-items: center; gap: 4px;
  transition: border-color .15s, color .15s, background .15s;
}
.navbar-user .nav-link:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-bg); }

.btn-logout {
  background: white; border: 1px solid var(--border);
  color: var(--text-muted); padding: 6px 12px; border-radius: 6px;
  cursor: pointer; font-size: 0.78rem; font-weight: 500;
  display: inline-flex; align-items: center; gap: 4px;
  transition: color .15s, border-color .15s, background .15s;
}
.btn-logout:hover { color: var(--danger); border-color: var(--danger); background: var(--danger-bg); }

#user-name { font-weight: 600; color: var(--ink); }

/* =========================================================
   Card
   ========================================================= */
.card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 18px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.card-title {
  font-size: 0.92rem; font-weight: 700; color: var(--ink);
  margin-bottom: 14px; display: flex; align-items: center; gap: 8px;
  letter-spacing: -0.005em;
}
.card-title .icon { color: var(--primary); }

/* =========================================================
   Badge
   ========================================================= */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 9px; border-radius: 999px;
  font-size: 0.72rem; font-weight: 600; line-height: 1.6;
  border: 1px solid transparent;
}
.badge-green { background: var(--accent-bg); color: #047857; border-color: #A7F3D0; }
.badge-blue  { background: var(--primary-bg); color: var(--primary-dark); border-color: #BFDBFE; }
.badge-yellow{ background: var(--warning-bg); color: #92400E; border-color: #FCD34D; }
.badge-red   { background: var(--danger-bg); color: #991B1B; border-color: #FECACA; }
.badge-gray  { background: var(--bg-soft); color: var(--text-muted); border-color: var(--border); }

/* =========================================================
   Table
   ========================================================= */
.table-wrap { overflow-x: auto; margin: 0 -4px; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th {
  background: var(--bg-subtle); color: var(--text-muted);
  font-weight: 600; padding: 10px 12px; text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap; font-size: 0.76rem;
  text-transform: uppercase; letter-spacing: 0.04em;
}
td {
  padding: 11px 12px; border-bottom: 1px solid var(--border);
  color: var(--text);
}
tbody tr { transition: background .1s; }
tbody tr:hover td { background: var(--bg-subtle); }
tbody tr:last-child td { border-bottom: none; }

/* =========================================================
   Modal
   ========================================================= */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, .55);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 200; padding: 16px; animation: fadeIn .15s ease-out;
}
.modal {
  background: white; border-radius: 14px; padding: 24px;
  width: 100%; max-width: 460px; max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow-lg); border: 1px solid rgba(255,255,255,.1);
  animation: slideUp .2s ease-out;
}
.modal-title {
  font-size: 1.05rem; font-weight: 700; margin-bottom: 18px;
  color: var(--ink); letter-spacing: -0.01em;
  padding-bottom: 14px; border-bottom: 1px solid var(--border);
}
.modal-footer {
  display: flex; gap: 8px; justify-content: flex-end;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* =========================================================
   Tabs (アンダーライン式)
   ========================================================= */
.tabs {
  display: flex; gap: 2px; border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
}
.tab-btn {
  padding: 10px 16px; border: none; background: transparent;
  color: var(--text-muted); font-size: 0.85rem; font-weight: 600;
  cursor: pointer; border-bottom: 2px solid transparent;
  margin-bottom: -1px; transition: color .15s, border-color .15s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

/* =========================================================
   Stat cards
   ========================================================= */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px; margin-bottom: 18px;
}
.stat-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 16px 18px; border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); position: relative;
}
.stat-label {
  font-size: 0.74rem; color: var(--text-muted);
  margin-bottom: 6px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.stat-value {
  font-size: 1.75rem; font-weight: 700; color: var(--ink);
  line-height: 1.1; letter-spacing: -0.02em;
}
.stat-unit { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; margin-left: 2px; }

/* =========================================================
   Employee mobile UI
   ========================================================= */
.emp-container { max-width: 460px; margin: 0 auto; padding: 16px; }

.clock-card {
  background: linear-gradient(160deg, #1E3A8A 0%, #2563EB 100%);
  color: white; border-radius: 18px; padding: 24px 20px 20px;
  text-align: center; margin-bottom: 14px;
  box-shadow: 0 20px 40px -16px rgba(37,99,235,.4);
  position: relative; overflow: hidden;
}
.clock-card::before {
  content: ''; position: absolute; top: -40%; right: -20%;
  width: 70%; height: 140%; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.08), transparent 70%);
  pointer-events: none;
}
.clock-time {
  font-size: 2.8rem; font-weight: 700; letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums; line-height: 1; position: relative;
}
.clock-date {
  font-size: 0.85rem; opacity: .85; margin-top: 6px; position: relative;
  font-weight: 500;
}
.clock-status {
  margin-top: 14px; font-size: 0.82rem; position: relative;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; background: rgba(255,255,255,.15);
  border-radius: 999px; backdrop-filter: blur(8px);
}
.clock-buttons {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
  margin-top: 18px; position: relative;
}
.btn-clock {
  padding: 16px; border: none; border-radius: 12px;
  font-size: 1.05rem; font-weight: 700; cursor: pointer;
  transition: transform .1s, box-shadow .15s, opacity .15s;
  letter-spacing: 0.02em;
}
.btn-clock-in { background: white; color: #047857; box-shadow: 0 4px 12px -2px rgba(0,0,0,.15); }
.btn-clock-in:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 6px 16px -2px rgba(0,0,0,.2); }
.btn-clock-out { background: white; color: #B91C1C; box-shadow: 0 4px 12px -2px rgba(0,0,0,.15); }
.btn-clock-out:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 6px 16px -2px rgba(0,0,0,.2); }
.btn-clock:disabled { opacity: .4; cursor: not-allowed; }

/* =========================================================
   Admin layout
   ========================================================= */
.admin-layout { display: flex; min-height: calc(100vh - 56px); }

.sidebar {
  width: 232px; background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 14px 12px; flex-shrink: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.sidebar-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; font-size: 0.86rem; font-weight: 500;
  color: var(--text-muted); cursor: pointer;
  border-radius: 8px;
  transition: background .12s, color .12s;
  position: relative; user-select: none;
}
.sidebar-item .icon { color: var(--text-subtle); transition: color .12s; }
.sidebar-item:hover { background: var(--bg-soft); color: var(--text); }
.sidebar-item:hover .icon { color: var(--text-muted); }
.sidebar-item.active {
  color: var(--primary); background: var(--primary-bg);
  font-weight: 600;
}
.sidebar-item.active .icon { color: var(--primary); }
.sidebar-section {
  font-size: 0.66rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-subtle); padding: 14px 12px 6px;
}

.admin-content {
  flex: 1; padding: 24px 28px; overflow-y: auto;
  background: var(--bg);
}

/* セクション見出し共通 */
.section-head {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; margin-bottom: 20px;
}
.section-title {
  font-size: 1.3rem; font-weight: 700; color: var(--ink);
  letter-spacing: -0.015em; line-height: 1.2;
}
.section-sub {
  font-size: 0.82rem; color: var(--text-muted);
  margin-top: 4px;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 768px) {
  body { font-size: 13.5px; }
  .admin-layout { flex-direction: column; }
  .sidebar {
    width: 100%; flex-direction: row;
    overflow-x: auto; padding: 8px;
    border-right: none; border-bottom: 1px solid var(--border);
    scrollbar-width: thin;
  }
  .sidebar-item {
    white-space: nowrap; padding: 8px 12px; flex-shrink: 0;
  }
  .admin-content { padding: 16px; }
  .section-title { font-size: 1.1rem; }
}

@media (max-width: 480px) {
  .navbar { padding: 0 14px; }
  .navbar-brand .brand-sub { display: none; }
}

/* =========================================================
   Utility
   ========================================================= */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 5px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); background-clip: padding-box; border: 2px solid transparent; }

::selection { background: rgba(37,99,235,.2); color: var(--ink); }