/* ============================================================
   OrderFit B2B Layout System
   SPEC_P4_072 | Header, Sidebar, Content, Footer, Bottom Nav
   ============================================================ */

/* === Main Layout Container === */
.layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout-body {
  display: flex;
  flex: 1;
  padding-top: var(--header-height);
}

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}

.header__logo:hover {
  text-decoration: none;
}

.header__spacer {
  flex: 1;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__user-name {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

.header__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-full);
  border: none;
  background: transparent;
  color: var(--color-gray-600);
  cursor: pointer;
  transition: background var(--transition-fast);
  position: relative;
}

.header__btn:hover {
  background: var(--color-gray-100);
  color: var(--color-black);
}

.header__btn .material-icons {
  font-size: 22px;
}

.header__hamburger {
  display: none;
}

/* === Sidebar === */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-white);
  border-right: 1px solid var(--color-gray-200);
  overflow-y: auto;
  z-index: 90;
  transition: transform var(--transition-normal);
}

.sidebar__menu {
  list-style: none;
  padding: var(--space-2) 0;
}

.sidebar__divider {
  height: 1px;
  background: var(--color-gray-200);
  margin: var(--space-2) 0;
}

.sidebar__label {
  padding: var(--space-3) var(--space-6) var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sidebar__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-6);
  color: var(--color-gray-800);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  border-left: 3px solid transparent;
}

.sidebar__item:hover {
  background: var(--color-gray-100);
  color: var(--color-primary);
  text-decoration: none;
}

.sidebar__item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: var(--font-medium);
}

.sidebar__item .material-icons {
  font-size: 20px;
  width: 20px;
  text-align: center;
}

.sidebar__item-badge {
  margin-left: auto;
  background: var(--color-error);
  color: var(--color-white);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  padding: 1px 6px;
  border-radius: var(--border-radius-full);
  min-width: 18px;
  text-align: center;
}

/* === Content === */
.content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--space-6);
  min-width: 0;
}

.content__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.content__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin-bottom: var(--space-2);
}

.content__breadcrumb a {
  color: var(--color-gray-600);
}

.content__breadcrumb a:hover {
  color: var(--color-primary);
}

.content__breadcrumb-separator {
  color: var(--color-gray-400);
}

.content__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-black);
}

.content__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.content__body {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}

/* === Footer === */
.footer {
  margin-left: var(--sidebar-width);
  padding: var(--space-4) var(--space-6);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-gray-600);
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

/* === Mobile Bottom Navigation (Shop) === */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-bottom-nav-height);
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  z-index: 100;
  box-shadow: 0 -2px 4px rgba(0,0,0,0.05);
}

.bottom-nav__list {
  display: flex;
  list-style: none;
  height: 100%;
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  text-decoration: none;
  color: var(--color-gray-600);
  font-size: 10px;
  transition: color var(--transition-fast);
  position: relative;
}

.bottom-nav__item:hover,
.bottom-nav__item.active {
  color: var(--color-primary);
  text-decoration: none;
}

.bottom-nav__item .material-icons {
  font-size: 22px;
}

.bottom-nav__badge {
  position: absolute;
  top: 4px;
  right: 50%;
  transform: translateX(14px);
  background: var(--color-error);
  color: var(--color-white);
  font-size: 10px;
  font-weight: var(--font-bold);
  padding: 0 5px;
  border-radius: var(--border-radius-full);
  min-width: 16px;
  height: 16px;
  line-height: 16px;
  text-align: center;
}

/* === Sidebar Overlay (Mobile) === */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 89;
}

.sidebar-overlay.active {
  display: block;
}

/* === Grid System === */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* === Content without Sidebar (Auth pages, Shop) === */
.content--no-sidebar {
  margin-left: 0;
}

.content--centered {
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--space-6);
}

/* === Responsive: Tablet === */
@media (max-width: 1023px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .content {
    margin-left: 0;
  }

  .footer {
    margin-left: 0;
  }

  .header__hamburger {
    display: flex;
  }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

/* === Responsive: Mobile === */
@media (max-width: 767px) {
  .header {
    height: var(--mobile-header-height);
    padding: 0 var(--space-4);
  }

  .layout-body {
    padding-top: var(--mobile-header-height);
  }

  .content {
    padding: var(--space-4);
  }

  .content__body {
    padding: var(--space-4);
  }

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

  .content__actions {
    width: 100%;
  }

  .content__actions .btn {
    flex: 1;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Shop: show bottom nav, add padding */
  .layout--shop .bottom-nav {
    display: block;
  }

  .layout--shop .content {
    padding-bottom: calc(var(--mobile-bottom-nav-height) + var(--space-4));
  }

  .footer {
    display: none;
  }
}

/* === Profile Dropdown === */
.dropdown {
  position: relative;
}

.dropdown__menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 180px;
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-200);
  z-index: 110;
  padding: var(--space-1) 0;
  margin-top: var(--space-1);
}

.dropdown__menu.open {
  display: block;
}

.dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-gray-800);
  text-decoration: none;
  transition: background var(--transition-fast);
}

.dropdown__item:hover {
  background: var(--color-gray-100);
  text-decoration: none;
}

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

.dropdown__divider {
  height: 1px;
  background: var(--color-gray-200);
  margin: var(--space-1) 0;
}