:root {
  --color-primary: #2563eb;
  --color-secondary: #0f766e;
  --color-accent: #f59e0b;
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #111827;
  --color-muted: #6b7280;
  --color-border: #d1d5db;
  --color-error: #dc2626;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--color-background);
  color: var(--color-text);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

[hidden] {
  display: none !important;
}

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

.login-panel,
.panel,
.metric {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.login-panel {
  width: min(100%, 420px);
  padding: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
}

.brand.compact {
  margin-bottom: 12px;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 800;
}

.brand-name {
  font-weight: 800;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--color-secondary);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

.form-stack {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.form-stack label {
  display: grid;
  gap: 6px;
  color: var(--color-muted);
  font-weight: 700;
}

.form-stack input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0 12px;
  color: var(--color-text);
  background: #ffffff;
}

.form-stack input:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgba(37, 99, 235, 0.16);
}

.form-error,
.form-message.error,
.error-row span {
  margin: 0;
  color: var(--color-error);
}

.form-message {
  margin: 0;
  font-weight: 700;
}

.form-message.success {
  color: #15803d;
}

.primary-button,
.secondary-button,
.nav-item {
  border: 0;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.primary-button {
  min-height: 44px;
  padding: 0 16px;
  color: #ffffff;
  background: var(--color-primary);
  font-weight: 800;
}

.secondary-button {
  min-height: 40px;
  padding: 0 12px;
  color: var(--color-text);
  background: #eef2f7;
}

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

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 20px;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
}

.nav-list {
  display: grid;
  gap: 6px;
}

.nav-item {
  justify-content: flex-start;
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  color: var(--color-muted);
  background: transparent;
}

.nav-item.active,
.nav-item:hover {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.08);
}

.workspace {
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 82px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.86);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-muted);
}

.content {
  padding: 28px;
}

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

.span-3 {
  grid-column: span 3;
}

.panel {
  padding: 22px;
}

.narrow-panel {
  max-width: 560px;
}

.account-form {
  max-width: 440px;
}

.panel p {
  max-width: 760px;
  color: var(--color-muted);
  line-height: 1.6;
}

.metric {
  display: grid;
  gap: 8px;
  min-height: 110px;
  padding: 18px;
}

.metric span,
.list-row small {
  color: var(--color-muted);
}

.metric strong {
  font-size: 1.8rem;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.responsive-list {
  display: grid;
  gap: 8px;
  margin-top: 20px;
}

.list-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: sticky;
    top: 0;
    z-index: 2;
    gap: 12px;
    padding: 12px;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-list {
    grid-auto-flow: column;
    grid-auto-columns: minmax(84px, 1fr);
    overflow-x: auto;
  }

  .nav-item {
    justify-content: center;
    min-height: 48px;
    padding: 8px;
    font-size: 0.86rem;
  }

  .topbar {
    align-items: flex-start;
    padding: 16px;
  }

  .user-menu {
    align-items: flex-end;
    flex-direction: column;
  }

  .content {
    padding: 16px;
  }

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

  .span-3 {
    grid-column: auto;
  }

  .list-row {
    align-items: flex-start;
    flex-direction: column;
  }
}