:root {
  --color-header-bg: #1a2a3a;
  --color-primary: #1a3a5c;
  --color-primary-hover: #2a5a8c;
  --color-primary-dark: #0f1c2a;
  --color-text: #1f2937;
  --color-text-secondary: #3a4a5a;
  --color-text-muted: #6b7280;
  --color-text-subtle: #8a95a5;
  --color-bg: #f0f3f7;
  --color-bg-card: #ffffff;
  --color-bg-subtle: #f8fafc;
  --color-border: #e8ecf0;
  --color-border-medium: #d0d5dd;
  --color-success: #16a34a;
  --color-success-bg: #dcfce7;
  --color-warning: #f59e0b;
  --color-warning-bg: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-bg: #fef2f2;
  --color-info: #0284c7;
  --color-info-bg: #e0f2fe;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --shadow-card: 0 1px 4px #0000000f, 0 2px 12px #0000000a;
  --shadow-hover: 0 4px 16px #00000014;
  --shadow-dropdown: 0 6px 24px #00000029;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.5;
}

.app-header {
  background: var(--color-header-bg);
  color: #fff;
  border-bottom: 1px solid var(--color-primary-dark);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-header-logo {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #fff;
  text-decoration: none;
}

.app-header-logo span { color: #7ab3e0; }

.app-header-nav { display: flex; gap: 4px; margin-left: 16px; }

.app-header-nav a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 14px;
  transition: background 0.15s, color 0.15s;
}

.app-header-nav a:hover,
.app-header-nav a.active { background: rgba(255,255,255,0.12); color: #fff; }

.header-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.header-user { font-size: 13px; color: rgba(255,255,255,0.65); }

.main { max-width: 1200px; margin: 0 auto; padding: 28px 24px; }

.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px 24px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: box-shadow 0.2s, transform 0.15s, background 0.15s;
  text-decoration: none;
}

.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover)); color: #fff; }
.btn-primary:hover { box-shadow: 0 4px 16px #1a3a5c40; }
.btn-secondary { background: #fff; color: var(--color-primary); border: 2px solid var(--color-border-medium); }
.btn-secondary:hover { border-color: var(--color-primary-hover); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.form-group { margin-bottom: 16px; }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

input[type=text], input[type=password], input[type=email], select {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-input);
  font-size: 14px;
  font-family: var(--font);
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.15s;
  outline: none;
}

input:focus, select:focus { border-color: var(--color-primary-hover); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: #b45309; }
.badge-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }
.badge-info    { background: var(--color-info-bg);    color: var(--color-info); }
.badge-neutral { background: #f3f4f6; color: var(--color-text-muted); }

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }

th {
  padding: 11px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

td { padding: 13px 14px; border-bottom: 1px solid var(--color-border); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f8fafc; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title { font-size: 22px; font-weight: 700; color: var(--color-primary); }
.page-subtitle { font-size: 14px; color: var(--color-text-muted); margin-top: 3px; }

.log-panel {
  background: #0f1c2a;
  border-radius: 10px;
  padding: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  line-height: 1.6;
  max-height: 360px;
  overflow-y: auto;
  display: none;
}

.log-panel.visible { display: block; }
.log-line { padding: 1px 0; }
.log-line.info    { color: #a8c8e8; }
.log-line.success { color: #86efac; }
.log-line.error   { color: #fca5a5; }

.text-muted { color: var(--color-text-muted); font-size: 13px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.flex { display: flex; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.items-center { align-items: center; }
.ml-auto { margin-left: auto; }

@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

.alert { padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; }
.alert-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }
.alert-success { background: var(--color-success-bg); color: var(--color-success); }