:root {
  --bg: #eef2f8;
  --panel: #ffffff;
  --panel-soft: #f7f8fc;
  --text: #18212f;
  --muted: #667085;
  --line: #d7dfeb;
  --primary: #0e7490;
  --primary-dark: #155e75;
  --danger: #b42318;
  --shadow: 0 22px 50px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(14, 116, 144, 0.12), transparent 30%),
    linear-gradient(180deg, #f7f9fc 0%, var(--bg) 100%);
  color: var(--text);
}

.page-shell {
  display: grid;
  grid-template-columns: 360px 1fr;
  min-height: 100vh;
}

.sidebar {
  padding: 24px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  border-right: 1px solid rgba(215, 223, 235, 0.9);
}

.sidebar__head h1,
.content__header h2,
.panel h2,
.chart-panel h3,
.message-card h3 {
  margin: 0;
}

.sidebar__head p,
.content__header p,
.eyebrow,
.metric-card small,
.muted {
  color: var(--muted);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  margin-bottom: 12px;
}

.sidebar__form,
.content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.content {
  padding: 28px;
}

.content__header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.panel,
.metric-card,
.chart-panel,
.message-card {
  background: var(--panel);
  border: 1px solid rgba(215, 223, 235, 0.8);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.panel {
  padding: 18px;
}

.radio-group {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.radio-card {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel-soft);
}

.field-grid {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-group label {
  font-size: 0.92rem;
  font-weight: 600;
}

.field-group input,
.field-group select {
  width: 100%;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
}

.field-group--checkbox label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.primary-button {
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

.logout-form {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.logout-form button {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 9px 12px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

.auth-page {
  min-height: 100vh;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.auth-panel {
  width: min(100%, 460px);
  padding: 28px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(215, 223, 235, 0.9);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.auth-panel__intro {
  margin-bottom: 24px;
}

.auth-panel__intro h1 {
  margin: 0;
  font-size: 2.2rem;
}

.auth-panel__intro p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.auth-form {
  display: grid;
  gap: 16px;
}

.auth-form .message-card {
  box-shadow: none;
  padding: 14px;
}

.form-error {
  color: var(--danger);
}

.metrics-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-card {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.metric-card__label {
  color: var(--muted);
  font-size: 0.9rem;
}

.metric-card strong {
  font-size: 1.9rem;
}

.chart-panel,
.message-card {
  padding: 20px;
}

.message-card--info {
  background: linear-gradient(180deg, rgba(14, 116, 144, 0.08), #ffffff);
}

.message-card--error {
  border-color: rgba(180, 35, 24, 0.3);
  color: var(--danger);
}

ol {
  margin: 12px 0 0;
  padding-left: 20px;
}

@media (max-width: 1100px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid rgba(215, 223, 235, 0.9);
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .content__header {
    flex-direction: column;
  }
}