/**
 * Kratevia base shell/header/navigation styles.
 * Extracted from app.css during CSS segmentation tranche 7.
 */

/* ============================================
   APP SHELL & LAYOUT
   ============================================ */

.app-page {
  min-height: 100vh;
  background: var(--bg-base);
}

/* App Shell Container */
.app-shell {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

/* Header Layout (Default) */
.app-shell[data-layout="header"],
.app-shell:not([data-layout]) {
  flex-direction: column;
}

.app-shell[data-layout="header"] .app-sidebar,
.app-shell:not([data-layout]) .app-sidebar {
  display: none;
}

/* Sidebar Layout */
.app-shell[data-layout="sidebar"] {
  flex-direction: row;
}

.app-shell[data-layout="sidebar"] .app-header {
  display: none;
}

.app-shell[data-layout="sidebar"] .app-sidebar {
  display: flex;
}

.app-shell[data-layout="sidebar"] .app-main {
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
}

/* ============================================
   APP HEADER
   ============================================ */

.app-header {
  height: var(--header-height);
  background: var(--surface-primary);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  overflow: visible;
}

.app-header-inner {
  flex: 1 1 auto;
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-width: 0;
  position: relative;
}

.app-header-inner,
.header-actions {
  overflow: visible;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  position: relative;
}

/* Logo - Uses unified .ks-logo from logo.css */

/* Navigation */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: var(--space-6);
}

.header-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: calc(var(--text-sm) * 1.12);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.header-nav-link:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

.header-nav-link.active {
  background: var(--accent-bg);
  color: var(--text-accent);
}

.header-nav-link svg {
  width: 18px;
  height: 18px;
  opacity: 0.7;
}

.header-nav-link:hover svg,
.header-nav-link.active svg {
  opacity: 1;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header-action-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: var(--surface-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.header-action-btn svg {
  width: 20px;
  height: 20px;
}

.header-notifications {
  position: relative;
  display: flex;
  align-items: center;
}

.notifications-btn {
  position: relative;
  width: 30px;
  height: 30px;
  min-width: 30px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text-secondary);
  box-shadow: none;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.notifications-btn:hover,
.notifications-btn:focus-visible,
.header-left-notifications-btn:hover,
.header-left-notifications-btn:focus-visible {
  background: color-mix(in srgb, var(--surface-secondary) 74%, transparent);
  color: var(--text-primary);
}

.notifications-btn[aria-expanded="true"],
.header-left-notifications-btn[aria-expanded="true"] {
  background: color-mix(in srgb, var(--accent-bg) 78%, transparent);
  color: var(--text-accent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-500) 22%, transparent);
}

[data-theme="dark"] .notifications-btn[aria-expanded="true"],
[data-theme="dark"] .header-left-notifications-btn[aria-expanded="true"] {
  background: rgba(var(--accent-rgb, 255, 208, 97), 0.14);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb, 255, 208, 97), 0.18);
}

.notification-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: var(--radius-full);
  background: var(--danger);
  color: var(--neutral-0);
  font-size: 11px;
  font-weight: var(--font-semibold);
  display: none;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--surface-primary);
  box-shadow: var(--shadow-xs);
  line-height: 1;
}

.notification-badge.is-visible {
  display: inline-flex;
}

@keyframes ks-badge-pop-in {
  0%   { transform: scale(0.4); opacity: 0; }
  65%  { transform: scale(1.18); opacity: 1; }
  100% { transform: scale(1); }
}

.notification-badge--animate {
  animation: ks-badge-pop-in 0.25s ease-out forwards;
}

.profile-dropdown.notifications-dropdown {
  min-width: 320px;
  width: 370px;
  max-width: 92vw;
  padding: var(--space-2) 0;
  box-sizing: border-box;
}

.notifications-dropdown-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 12px;
  align-items: start;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
}

.notifications-header-row1 {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  min-width: 0;
  grid-column: 2;
  grid-row: 1 / span 2;
  justify-self: end;
  align-self: start;
}

.notifications-header-row2 {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: auto;
  min-width: 0;
  flex-wrap: wrap;
  grid-column: 2;
  justify-self: end;
}

.notifications-header-left {
  display: grid;
  gap: 4px;
  min-width: 0;
  grid-column: 1;
  grid-row: 1 / span 2;
}

.notifications-count-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  max-width: 100%;
  flex-wrap: wrap;
}

@media (max-width: 420px) {
  .notifications-dropdown-header {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px 8px;
  }

  .notifications-header-left {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .notifications-header-row1 {
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-self: end;
  }

  .notifications-header-row2 {
    grid-column: 2;
    justify-self: end;
  }

  .notifications-count-row {
    gap: 4px;
  }
}