:root {
  --color-bg: #f4f7fa;
  --color-surface: #ffffff;
  --color-surface-alt: #eef3f7;
  --color-border: #e1e8ef;
  --color-text: #202a37;
  --color-muted: #64748b;
  --color-primary: #3d6f93;
  --color-primary-dark: #2f5876;
  --color-primary-bg: #e9f1f6;
  --color-accent: #e8815d;
  --color-accent-dark: #d16c49;
  --color-success: #16a34a;
  --color-success-bg: #ecfdf3;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --shadow-sm: 0 1px 2px rgba(32, 42, 55, 0.06);
  --shadow-md: 0 4px 12px rgba(32, 42, 55, 0.08);
  --sidebar-width: 220px;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
}

.sidebar-brand {
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 12px;
}

.sidebar-logo {
  max-width: 100%;
  height: auto;
  display: block;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 2px;
  padding: 0 10px;
}

.sidebar-nav a {
  padding: 9px 12px;
  color: var(--color-text);
  border-radius: 7px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.sidebar-nav a:hover {
  background: var(--color-surface-alt);
  text-decoration: none;
}

.sidebar-nav a.active {
  background: var(--color-primary-bg);
  color: var(--color-primary-dark);
  font-weight: 700;
}

.sidebar-footer {
  padding: 12px 20px 0;
  border-top: 1px solid var(--color-border);
  margin-top: 12px;
}

.lang-switch {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}

.lang-switch a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--color-muted);
  background: var(--color-surface-alt);
  transition: color 0.15s ease, background 0.15s ease;
}

.lang-switch a:hover {
  color: var(--color-text);
  background: var(--color-surface-alt);
  text-decoration: none;
}

.lang-switch a.active {
  color: var(--color-primary-dark);
  background: var(--color-primary-bg);
}

.sidebar-user {
  color: var(--color-muted);
  font-size: 12px;
  margin-bottom: 8px;
  word-break: break-all;
}

.link-button {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  padding: 0;
  font-size: 13px;
  font-family: inherit;
}
.link-button:hover { color: var(--color-primary-dark); text-decoration: underline; }

.content {
  flex: 1;
  padding: 28px 32px;
  max-width: 1200px;
}

h1 { font-size: 22px; font-weight: 800; letter-spacing: -0.01em; margin: 0 0 20px; color: var(--color-text); }
h2 { font-size: 16px; font-weight: 700; margin: 0 0 12px; color: var(--color-text); }

.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 500;
}
.flash-success { background: var(--color-success-bg); color: var(--color-success); }
.flash-error { background: var(--color-error-bg); color: var(--color-error); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-primary);
}
.stat-card .stat-value { font-size: 26px; font-weight: 800; color: var(--color-text); letter-spacing: -0.02em; }
.stat-card .stat-label { color: var(--color-muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

th, td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

th {
  background: var(--color-surface-alt);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--color-muted);
}

tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--color-surface-alt); }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}

.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

input[type="text"], input[type="email"], input[type="password"], input[type="tel"], input[type="file"], select, textarea {
  padding: 8px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="text"]:focus, input[type="email"]:focus, input[type="password"]:focus,
input[type="tel"]:focus, input[type="file"]:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

textarea { width: 100%; min-height: 70px; resize: vertical; }

.file-picker {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.file-picker-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.file-picker-input:focus-visible + .file-picker-btn {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.file-picker-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 0;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.file-picker-btn::before {
  content: "";
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  background: var(--color-muted);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21.44 11.05l-9.19 9.19a6 6 0 0 1-8.49-8.49l9.19-9.19a4 4 0 0 1 5.66 5.66l-9.2 9.19a2 2 0 0 1-2.83-2.83l8.49-8.48'%3E%3C/path%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21.44 11.05l-9.19 9.19a6 6 0 0 1-8.49-8.49l9.19-9.19a4 4 0 0 1 5.66 5.66l-9.2 9.19a2 2 0 0 1-2.83-2.83l8.49-8.48'%3E%3C/path%3E%3C/svg%3E") center / contain no-repeat;
}
.file-picker-btn:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-border);
}
.file-picker-btn:hover::before {
  background: var(--color-text);
}

.file-picker-name {
  font-size: 13px;
  color: var(--color-muted);
}

label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 4px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.form-field { margin-bottom: 14px; }
.form-field.full { grid-column: 1 / -1; }

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.checkbox-group label {
  font-weight: 400;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
}
.btn:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover { background: var(--color-surface-alt); border-color: var(--color-border); }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}
.badge-neutral { background: var(--color-surface-alt); color: var(--color-muted); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: #fdf2ec; color: var(--color-accent-dark); }
.badge-error { background: var(--color-error-bg); color: var(--color-error); }
.badge-info { background: var(--color-primary-bg); color: var(--color-primary-dark); }

.empty-state {
  text-align: center;
  color: var(--color-muted);
  padding: 48px 20px;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--color-bg) 0%, var(--color-primary-bg) 100%);
}

.login-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 32px;
  width: 320px;
  box-shadow: var(--shadow-md);
  position: relative;
}

.lang-switch-standalone {
  position: absolute;
  top: 14px;
  right: 14px;
  margin-bottom: 0;
}
.login-box h1 { text-align: center; }

.login-logo {
  display: block;
  max-width: 170px;
  height: auto;
  margin: 0 auto 20px;
}

.mapping-table td, .mapping-table th { vertical-align: top; }
.tag-list { display: flex; gap: 6px; flex-wrap: wrap; }