/* 在庫フラッシュ -- SaaS Light Theme v2 (light-only) */
html { color-scheme: light only; background: #FFFFFF; }
:root {
  color-scheme: light;
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #DBEAFE;
  --accent: #F97316;
  --accent-dark: #EA580C;
  --success: #10B981;
  --success-light: #D1FAE5;
  --warn: #F59E0B;
  --warn-light: #FEF3C7;
  --danger: #EF4444;
  --danger-light: #FEE2E2;

  --bg: #FFFFFF;
  --surface: #F9FAFB;
  --surface-2: #F3F4F6;
  --border: #E5E7EB;
  --border-strong: #D1D5DB;

  --text: #111827;
  --text-2: #374151;
  --muted: #6B7280;
  --muted-2: #9CA3AF;

  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow: 0 1px 3px 0 rgba(0,0,0,0.07), 0 1px 2px -1px rgba(0,0,0,0.05);
  --shadow-lg: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -2px rgba(0,0,0,0.04);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  font-feature-settings: 'palt';
  background: #FFFFFF !important;
  color: #111827 !important;
  font-size: 15px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.01em;
}

/* ダークモード反転を完全に禁止 */
@media (prefers-color-scheme: dark) {
  html, body { background: #FFFFFF !important; color: #111827 !important; }
  :root { color-scheme: light; }
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; background: var(--surface); padding: 2px 6px; border-radius: 4px; color: var(--text-2); }

/* ===== Topbar (logged in) ===== */
.topbar {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}
.topbar .brand {
  display: inline-block;
  margin-right: 28px;
  vertical-align: middle;
}
.topbar .brand img { display: block; height: 38px; width: auto; }
.brand-logo { display: inline-block; vertical-align: middle; }
.topbar .mainnav {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  vertical-align: middle;
}
.topbar .mainnav a {
  color: var(--text-2);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.topbar .mainnav a:hover { background: var(--surface); color: var(--text); }
.topbar .mainnav a.is-active { background: var(--primary-light); color: var(--primary-dark); }
.topbar .actions { float: right; }
.topbar .actions .logout {
  color: var(--muted);
  font-size: 13px;
  padding: 8px 12px;
}
.topbar .actions .logout:hover { color: var(--text); text-decoration: none; }

/* ===== Container & Main ===== */
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

/* ===== Typography ===== */
h1 { font-size: 26px; font-weight: 700; margin: 0 0 8px; letter-spacing: -0.01em; color: var(--text); }
h2 { font-size: 20px; font-weight: 700; margin: 0 0 12px; color: var(--text); }
h3 { font-size: 16px; font-weight: 600; margin: 0 0 8px; color: var(--text); }
p.subtitle { color: var(--muted); margin: 0 0 24px; font-size: 14px; }

/* ===== Cards ===== */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

/* ===== Quick Action Tiles (ホーム) ===== */
.quick {
  display: block;
  padding: 20px 22px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 10px;
  text-decoration: none !important;
  color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.quick:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
  text-decoration: none;
}
.quick .title { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 4px; letter-spacing: -0.005em; }
.quick .desc { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ===== Forms ===== */
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 6px;
}
.form-row.required label::after {
  content: '*';
  color: var(--danger);
  margin-left: 4px;
}
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 16px; /* prevents iOS zoom */
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
  appearance: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}
input::placeholder { color: var(--muted-2); }
.form-row p.meta {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--muted);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-2);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none !important;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
  line-height: 1.2;
}
.btn:hover { background: var(--surface); border-color: var(--muted-2); }
.btn:active { transform: scale(0.98); }
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn.success { background: var(--success); color: #fff; border-color: var(--success); }
.btn.success:hover { background: #059669; border-color: #059669; }
.btn.warn { background: var(--warn); color: #78350F; border-color: var(--warn); }
.btn.warn:hover { background: var(--accent-dark); color: #fff; border-color: var(--accent-dark); }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn.block { width: 100%; padding: 14px; font-size: 15px; }
.btn.large { padding: 14px 24px; font-size: 15px; }

/* ===== Alerts ===== */
.alert {
  padding: 14px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid;
}
.alert.error { background: var(--danger-light); border-color: #FCA5A5; color: #991B1B; }
.alert.success { background: var(--success-light); border-color: #86EFAC; color: #065F46; }
.alert.warn { background: var(--warn-light); border-color: #FCD34D; color: #92400E; }
.alert.info { background: var(--primary-light); border-color: #93C5FD; color: #1E40AF; }

/* ===== Inventory list (item-row) ===== */
.item-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 8px;
  box-shadow: var(--shadow-sm);
}
.item-row img {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  object-fit: cover;
  background: var(--surface);
  flex-shrink: 0;
}
.item-row .body { flex: 1; min-width: 0; }
.item-row .name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.item-row .meta { font-size: 12px; color: var(--muted); }

/* ===== Pills (status) ===== */
.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.pill.status-在庫 { background: var(--primary-light); color: var(--primary-dark); }
.pill.status-販売済 { background: var(--success-light); color: #065F46; }
.pill.status-返品 { background: var(--warn-light); color: #92400E; }

/* ===== Login / Signup card ===== */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(135deg, var(--surface) 0%, var(--bg) 60%);
}
.login-card {
  width: 100%;
  max-width: 400px;
  padding: 36px 32px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: 0 10px 25px -5px rgba(0,0,0,0.06), 0 8px 10px -6px rgba(0,0,0,0.05);
}
.login-card h1 {
  font-size: 22px;
  text-align: center;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
  font-weight: 700;
}
.login-card h1 img { display: block; height: 44px; width: auto; margin: 0 auto 8px; }
.login-card .subtitle { text-align: center; margin-bottom: 24px; }

/* ===== Footer ===== */
.botbar {
  margin-top: 60px;
  padding: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .topbar { padding: 10px 14px; }
  .topbar .brand { margin-right: 12px; display: block; margin-bottom: 8px; }
  .topbar .brand img { height: 30px; }
  .topbar .mainnav { display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 2px; }
  .topbar .mainnav a { padding: 8px 12px; font-size: 12px; }
  .topbar .actions { display: block; float: none; margin-top: 8px; }
  .container { padding: 20px 16px 50px; }
  h1 { font-size: 22px; }
  .login-card { padding: 28px 22px; }
  .login-card h1 img { height: 38px; }
}