:root {
  --bg: #edf2f7;
  --surface: #ffffff;
  --ink: #0f2a44;
  --muted: #50667a;
  --line: #dbe4ec;
  --primary: #005cc8;
  --primary-soft: #d9e8ff;
  --accent: #008060;
  --danger: #b42318;
  --sidebar: #0d1f33;
  --sidebar-ink: #dbe8f6;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(145deg, #dae9ff 0%, #edf2f7 35%, #f8fbff 100%);
}

a {
  color: inherit;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  position: relative;
  width: 100%;
  max-width: 520px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 20px 35px rgba(16, 40, 72, 0.12);
}

.login-title {
  margin: 0 0 14px;
  padding-right: 70px;
  font-size: 1.7rem;
}

.login-subtitle {
  margin: 0 0 28px;
  padding-right: 70px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.35;
}

.form-hint {
  margin: -12px 0 20px;
  color: #365876;
  font-size: 0.88rem;
  line-height: 1.4;
}

.login-lang {
  position: absolute;
  top: 14px;
  right: 14px;
}

.login-lang select {
  border: 1px solid #bfcfe0;
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #1d3c5a;
  background: #fff;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.94rem;
  font-weight: 600;
}

.form-group input,
.form-group select {
  width: 100%;
  border: 1px solid #bfcfe0;
  border-radius: 9px;
  padding: 12px 14px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

.btn {
  width: 100%;
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  margin-top: 8px;
  padding: 13px 14px;
  font-weight: 700;
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.alert {
  margin-top: 18px;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.9rem;
}

.alert-error {
  border: 1px solid #f6c0ba;
  color: var(--danger);
  background: #fff2f0;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
}

.sidebar {
  background: linear-gradient(180deg, #0d1f33 0%, #102949 100%);
  color: var(--sidebar-ink);
  padding: 20px 16px;
}

.brand {
  margin: 0 0 18px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.2px;
}

.nav-item {
  display: block;
  text-decoration: none;
  color: var(--sidebar-ink);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 10px;
  font-size: 0.93rem;
}

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.topbar h1 {
  margin: 0;
  font-size: 1.15rem;
}

.user-meta {
  color: var(--muted);
  font-size: 0.86rem;
}

.actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-ghost {
  border: 1px solid #b9cbe0;
  background: #fff;
  color: #20486c;
  border-radius: 9px;
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
}

.content {
  padding: 18px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}

.metric {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}

.metric .label {
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 6px;
}

.metric .value {
  font-size: 1.5rem;
  font-weight: 800;
}

.info-panel {
  margin-top: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  font-family: "IBM Plex Mono", "Consolas", monospace;
  font-size: 0.83rem;
  color: #233f59;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
}