/* ==========================================================================
   Redalpine Operations Manual (ROM) - Base Layout & Typography
   ========================================================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-main);
  background-color: var(--bg-app);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}

/* App Shell Layout */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* Sidebar Navigation */
.app-sidebar {
  width: 260px;
  min-width: 260px;
  background-color: var(--bg-sidebar);
  color: var(--text-sidebar);
  display: flex;
  flex-direction: column;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 40;
  transition: width var(--transition-normal);
}

.sidebar-header {
  padding: 20px 18px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brand-logo {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--brand-primary), #9f1239);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.5px;
  box-shadow: 0 2px 8px rgba(225, 29, 72, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  color: var(--text-sidebar-bright);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.2px;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

/* Sidebar Navigation Items */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #64748b;
  padding: 12px 10px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  color: var(--text-sidebar);
  text-decoration: none;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  user-select: none;
}

.nav-item:hover {
  background-color: var(--bg-sidebar-hover);
  color: var(--text-sidebar-bright);
}

.nav-item.active {
  background-color: var(--brand-primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(225, 29, 72, 0.35);
}

.nav-icon {
  width: 18px;
  height: 18px;
  opacity: 0.85;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-item.active .nav-icon {
  opacity: 1;
}

.nav-badge {
  margin-left: auto;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.nav-badge.badge-urgent {
  background-color: var(--brand-primary);
  color: white;
}

.nav-badge.badge-count {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--text-sidebar-bright);
}

/* Sidebar Footer (User / Quick actions) */
.sidebar-footer {
  padding: 12px 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-profile-badge {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--brand-primary-light);
  border: 2px solid var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  color: #fff;
  overflow: hidden;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-sidebar-bright);
}

.user-role {
  font-size: 10px;
  color: var(--text-subtle);
}

/* Main Content Area */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-app);
}

/* Header & Command Bar */
.app-header {
  height: 56px;
  min-height: 56px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 30;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.breadcrumb-area {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb-area .current-page {
  font-weight: 600;
  color: var(--text-main);
}

.search-trigger-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  cursor: pointer;
  min-width: 260px;
  transition: all var(--transition-fast);
}

.search-trigger-btn:hover {
  border-color: var(--brand-primary);
  background-color: var(--bg-surface);
  color: var(--text-main);
}

.kbd-shortcut {
  margin-left: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 1px 6px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

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

/* Content Container */
.app-content {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px 64px;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}