:root {
  /* Pastel 2 Color Palette */
  --app-bg: linear-gradient(180deg, #E1F5FE 0%, #F0F4C3 100%);
  --surface: rgba(255, 204, 188, 0.4);
  --surface-strong: rgba(248, 187, 208, 0.5);
  --border: rgba(200, 230, 201, 0.4);
  --shadow: 0 18px 50px rgba(176, 190, 197, 0.12);
  --text-main: #424242;
  --text-soft: #757575;
  --accent: #245a61;
  --accent-soft: #F0F4C3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--app-bg);
  color: var(--text-main);
}

.app-shell {
  min-height: 100vh;
  position: relative;
}

.desktop-sidebar-wrap {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 300px;
  z-index: 30;
}

.app-sidebar {
  width: 300px;
  padding: 28px 22px;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(247, 241, 223, 0.95) 0%, rgba(242, 246, 229, 0.95) 100%);
  position: relative;
  height: 100vh;
  overflow: hidden;
  transition: opacity 220ms ease, padding 220ms ease, border-color 220ms ease, transform 220ms ease;
}

.sidebar-stack {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.sidebar-nav {
  flex: 1;
}

.sidebar-logo {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.sidebar-logo-img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.85;
}

.sidebar-kicker,
.content-kicker,
.section-kicker {
  text-transform: none;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
}

.sidebar-title {
  line-height: 1.1;
}

.sidebar-header {
  margin-top: 30px;
}

.sidebar-link {
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid transparent;
}

.sidebar-link:hover {
  border-color: var(--border);
  background: var(--surface-strong);
}

.content-card,
.app-header-card {
  background: var(--surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.app-main {
  min-height: 100vh;
  padding: 28px;
  min-width: 0;
  margin-left: 300px;
  transition: margin-left 240ms ease;
}

.page-slot {
  margin-top: 24px;
}

.page-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app-main h1,
.app-main h2,
.app-main h3,
.app-main h4,
.app-main h5,
.app-main h6,
.app-main p,
.app-main label,
.app-main small,
.app-main li,
.app-main .section-kicker,
.app-main .content-kicker,
.app-main .sidebar-kicker {
  margin-top: 10px;
  margin-bottom: 5px;
  margin-left: 5px;
  margin-right: 5px;
}

.sidebar-nav,
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-link-anchor {
  text-decoration: none;
  color: inherit;
}

.nav-link-title {
  font-weight: 700;
}

.nav-link-path {
  font-size: .8rem;
  color: var(--text-soft);
}

.mobile-nav {
  display: none;
}

.mobile-nav-link,
.sidebar-link {
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid transparent;
  padding: 14px 16px;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.mobile-nav-link:hover,
.sidebar-link:hover {
  border-color: var(--border);
  background: var(--surface-strong);
  transform: translateY(-1px);
}

/* DataTable overrides */
.dash-spreadsheet-container .dash-spreadsheet-inner td,
.dash-spreadsheet-container .dash-spreadsheet-inner th {
  border-color: var(--border) !important;
}

@media (max-width: 900px) {
  .desktop-sidebar-wrap {
    display: none !important;
  }

  .app-main {
    padding: 18px;
    margin-left: 0 !important;
  }

  .mobile-nav {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .mobile-nav-link {
    min-width: 160px;
  }
}