:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #1f2a44;
  --muted: #6b778c;
  --primary: #2f6fed;
  --primary_dark: #2459c9;
  --border: #e2e7f0;
  --sidebar: #1f2a3b;
  --sidebar_text: #cfd6e5;
  --card_shadow: 0 10px 30px rgba(25, 32, 56, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.sidebar {
  background: var(--sidebar);
  color: var(--sidebar_text);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand_badge {
  width: 36px;
  height: 36px;
  background: #2c3a55;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: #fff;
}

.brand_name {
  font-weight: 600;
  color: #fff;
}

.nav_group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav_item {
  text-decoration: none;
  color: var(--sidebar_text);
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 14px;
}

.nav_item.active,
.nav_item:hover {
  background: #27354f;
  color: #ffffff;
}

.sidebar_footer {
  margin-top: auto;
}

.plan_card {
  background: #243149;
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--card_shadow);
}

.plan_title {
  margin: 0 0 6px;
  font-weight: 600;
  color: #fff;
}

.plan_text {
  margin: 0 0 12px;
  font-size: 13px;
  color: #b7c2d9;
}

.primary_btn,
.ghost_btn {
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 13px;
  cursor: pointer;
}

.primary_btn {
  background: var(--primary);
  color: #fff;
}

.primary_btn:hover {
  background: var(--primary_dark);
}

.ghost_btn {
  background: #eef2f9;
  color: var(--text);
}

.main_content {
  padding: 32px 40px 60px;
}

.top_bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}

.top_bar h1 {
  margin: 0 0 6px;
  font-size: 24px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.top_actions {
  display: flex;
  gap: 10px;
}

.tabs_bar {
  display: flex;
  gap: 10px;
  margin: 24px 0 10px;
}

.tab {
  border: 1px solid var(--border);
  background: #fff;
  padding: 8px 16px;
  border-radius: 12px;
  font-size: 13px;
  cursor: pointer;
}

.tab.active {
  background: #dfe9ff;
  border-color: #c6d6ff;
  color: #2a5ed6;
}

.filters_bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 12px 0 24px;
  flex-wrap: wrap;
}

.filter_group {
  display: flex;
  gap: 8px;
}

.chip {
  border: 1px solid var(--border);
  background: #fff;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
}

.chip.active {
  background: #dfe9ff;
  border-color: #c6d6ff;
  color: #2a5ed6;
}

.search_group {
  display: flex;
  gap: 10px;
}

.search_input {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  min-width: 220px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--card_shadow);
}

.panel_header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.panel_header h3 {
  margin: 0;
  font-size: 16px;
}

.panel_meta {
  color: var(--muted);
  font-size: 13px;
}

.panel_body {
  display: grid;
  gap: 12px;
}

.purchase_card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  background: #fff;
}

.purchase_name {
  margin: 0 0 4px;
  font-weight: 600;
}

.purchase_meta {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.purchase_tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.tag {
  background: #f1f4fb;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
}

.empty_state {
  text-align: center;
  padding: 30px;
  border: 1px dashed var(--border);
  border-radius: 16px;
}

.empty_icon {
  font-size: 32px;
}

@media (max-width: 980px) {
  .app_shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    flex-direction: row;
    overflow-x: auto;
  }

  .sidebar_footer {
    display: none;
  }

  .tabs_bar {
    flex-wrap: wrap;
  }
}