/* Design tokens: see tokens.css */
/* UI components (.btn, .card, toasts, flatpickr): see components/ui.css */

/* ============================================================
   Reset / Base
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
}

/* ============================================================
   App shell
   ============================================================ */
.app {
  display: flex;
  min-height: 100dvh;
}

/* ============================================================
   Main area
   ============================================================ */
.main {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-width-expanded);
  transition: margin-left 0.25s ease;
}

.sidebar.is-collapsed ~ .main {
  margin-left: var(--sidebar-width-collapsed);
}

/* ============================================================
   Header
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  z-index: 100;
  flex-shrink: 0;
}

.header__hamburger {
  display: none;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-muted);
  border-radius: var(--radius-btn);
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.header__hamburger:hover {
  background: var(--color-hover-bg);
  color: var(--color-primary);
}

.header__hamburger img {
  filter: var(--icon-filter);
  transition: filter 0.15s;
}

.header__hamburger:hover img {
  filter: var(--icon-filter-active);
}

.header__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

/* Title area — stretches to fill available header space */
.header__title-area {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
}

/* ============================================================
   Breadcrumbs component  (components/breadcrumbs/breadcrumbs.html)
   ============================================================ */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.breadcrumbs__back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-border);
  background: transparent;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
  flex-shrink: 0;
  margin-right: 2px;
}

.breadcrumbs__back img {
  filter: var(--icon-filter);
  transition: filter 0.15s;
}

.breadcrumbs__back:hover {
  background: var(--color-hover-bg);
  border-color: var(--color-primary);
}

.breadcrumbs__back:hover img {
  filter: var(--icon-filter-active);
}

.breadcrumbs__sep {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs__sep img {
  filter: var(--icon-filter);
  opacity: 0.5;
}

.breadcrumbs__item {
  font-size: 14px;
  line-height: 1;
}

.breadcrumbs__item--link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 400;
  transition: color 0.15s;
}

.breadcrumbs__item--link:hover {
  color: var(--color-primary);
}

.breadcrumbs__item--current {
  color: var(--color-text);
  font-weight: 600;
}

/* ============================================================
   Content area
   ============================================================ */
.content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

/* ============================================================
   Responsive — Tablet (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .main { margin-left: var(--sidebar-width-collapsed); }
  .sidebar.is-collapsed ~ .main { margin-left: var(--sidebar-width-collapsed); }
}

/* ============================================================
   Responsive — Mobile (< 640px)
   ============================================================ */
@media (max-width: 639px) {
  .main { margin-left: 0; }
  .sidebar.is-collapsed ~ .main { margin-left: 0; }

  .header__hamburger { display: flex; }
  .header { padding: 0 16px; }
  .content { padding: 16px; }
}