/*
 * TESSARAKT Fund Management System
 * Sprint 2 — Application Shell
 *
 * Scope: persistent header, sidebar, workspace, page container, and responsive
 * desktop shell only. Module layouts and rendered business content remain
 * controlled by styles.css.
 */

html,
body {
  max-width: 100%;
  overflow-x: clip;
}

body {
  min-width: 0;
  font-family: var(--font-family-sans);
}

#app-shell.app {
  width: 100%;
  min-width: 0;
  min-height: 100vh;
}

/* Top header */
#app-shell > .app-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  display: flex;
  width: calc(100% - var(--size-sidebar-expanded));
  min-width: 0;
  min-height: var(--size-header);
  height: var(--size-header);
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  margin-left: var(--size-sidebar-expanded);
  padding: 0 clamp(var(--space-5), 2vw, var(--space-7));
  border-bottom: 1px solid var(--color-border-subtle);
  background: rgba(8, 12, 20, 0.9);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(18px);
  transition:
    width var(--duration-normal) var(--ease-standard),
    margin-left var(--duration-normal) var(--ease-standard);
}

#app-shell:has(#layout.sidebar-collapsed) > .app-header {
  width: calc(100% - var(--size-sidebar-collapsed));
  margin-left: var(--size-sidebar-collapsed);
}

#app-shell .brand-row {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-3);
}

#app-shell .brand-icon {
  width: var(--size-avatar-lg);
  height: var(--size-avatar-lg);
  flex: 0 0 var(--size-avatar-lg);
  border-radius: var(--radius-lg);
}

#app-shell .brand-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

#app-shell .brand-row > div:last-child {
  min-width: 0;
}

#app-shell .app-header h1 {
  overflow: hidden;
  margin: 0;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: var(--letter-spacing-brand);
  line-height: var(--line-height-tight);
  text-overflow: ellipsis;
  white-space: nowrap;
}

#app-shell .app-header p {
  margin: var(--space-1) 0 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-2xs);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: var(--letter-spacing-label);
  line-height: var(--line-height-tight);
  text-transform: uppercase;
}

#app-shell .header-tools {
  display: flex;
  min-width: 0;
  flex: 0 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  flex-wrap: nowrap;
}

#app-shell .sync-badge,
#app-shell .online-users,
#app-shell .theme-toggle,
#app-shell .user-menu {
  flex: 0 0 auto;
}

#app-shell .user-menu {
  min-width: 0;
}

#app-shell .user-menu-trigger {
  max-width: min(19rem, 26vw);
}

#app-shell .user-badge {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Main workspace */
#layout.layout {
  display: block;
  width: 100%;
  max-width: none;
  min-width: 0;
  flex: 1 0 auto;
  margin: 0;
  padding:
    var(--space-6)
    clamp(var(--space-5), 2vw, var(--space-7))
    var(--space-8)
    calc(var(--size-sidebar-expanded) + clamp(var(--space-5), 2vw, var(--space-7)));
  transition: padding-left var(--duration-normal) var(--ease-standard);
}

#layout > .main-panel {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: var(--size-content-max);
  margin-inline: auto;
}

#layout > .main-panel > .page {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  margin-inline: auto;
}

/* Sidebar */
#layout > .sidebar {
  position: fixed;
  z-index: calc(var(--z-header) + 1);
  inset: 0 auto 0 0;
  display: flex;
  width: var(--size-sidebar-expanded) !important;
  min-width: var(--size-sidebar-expanded) !important;
  height: 100vh;
  max-height: 100vh;
  flex-direction: column;
  overflow: hidden;
  overscroll-behavior: contain;
  padding: var(--space-6) var(--space-5) var(--space-5);
  border: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  background: #131722;
  box-shadow: none;
  transition:
    width var(--duration-normal) var(--ease-standard),
    min-width var(--duration-normal) var(--ease-standard),
    padding var(--duration-normal) var(--ease-standard);
}

#layout > .sidebar .sidebar-menu {
  min-width: 0;
  min-height: 0;
  flex: 1 1 auto;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: var(--space-1);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}

#layout > .sidebar .sidebar-menu::-webkit-scrollbar {
  width: 5px;
}

#layout > .sidebar .sidebar-menu::-webkit-scrollbar-thumb {
  border-radius: var(--radius-pill);
  background: var(--color-border-strong);
}

#layout > .sidebar .sidebar-top {
  display: flex;
  min-height: var(--size-control-md);
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 var(--space-3);
  padding: 0 var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border-subtle);
}

#layout > .sidebar .nav-label {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-2xs);
  font-weight: var(--font-weight-black);
  letter-spacing: var(--letter-spacing-brand);
  line-height: var(--line-height-snug);
}

#layout > .sidebar .nav-section {
  display: grid;
  flex: 0 0 auto;
  gap: var(--space-1);
  margin: 0 !important;
  padding: var(--space-2) 0 var(--space-3);
}

#layout > .sidebar .nav-section + .nav-section {
  border-top: 1px solid var(--color-border-subtle);
}

#layout > .sidebar .nav-section-label {
  display: block;
  margin: 0;
  padding: var(--space-2) var(--space-3) var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--font-size-2xs);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: var(--letter-spacing-brand);
  line-height: var(--line-height-snug);
  text-transform: uppercase;
}

#layout > .sidebar .nav-btn {
  display: flex;
  width: 100%;
  min-width: 0;
  min-height: 3rem;
  height: 3rem;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-3);
  margin: 0;
  padding: 0 var(--space-4);
  border-radius: var(--radius-lg);
  transition:
    color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

#layout > .sidebar .nav-btn:hover {
  transform: none;
}

#layout > .sidebar .nav-icon {
  width: 1.75rem;
  height: 1.75rem;
  flex: 0 0 1.75rem;
  border-radius: var(--radius-sm);
}

#layout > .sidebar .nav-text {
  min-width: 0;
  overflow: hidden !important;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
}

#layout > .sidebar #sidebar-toggle {
  position: static;
  z-index: 2;
  width: var(--size-control-md);
  height: var(--size-control-md);
  min-height: var(--size-control-md);
  flex: 0 0 var(--size-control-md);
  align-self: flex-end;
  margin: var(--space-3) 0 0;
  border-color: var(--color-border-default);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface-subtle);
  color: var(--color-text-primary);
  box-shadow: none;
}

/* Collapsed sidebar */
#layout.layout.sidebar-collapsed {
  padding-left: calc(var(--size-sidebar-collapsed) + clamp(var(--space-5), 2vw, var(--space-7)));
}

#layout.layout.sidebar-collapsed > .sidebar {
  width: var(--size-sidebar-collapsed) !important;
  min-width: var(--size-sidebar-collapsed) !important;
  padding: var(--space-3) var(--space-2);
}

#layout.layout.sidebar-collapsed > .sidebar .sidebar-top {
  justify-content: center;
  min-height: var(--space-3);
  padding-inline: 0;
}

#layout.layout.sidebar-collapsed > .sidebar .nav-label,
#layout.layout.sidebar-collapsed > .sidebar .nav-section-label,
#layout.layout.sidebar-collapsed > .sidebar .nav-text {
  display: none !important;
}

#layout.layout.sidebar-collapsed > .sidebar .nav-section {
  justify-items: center;
}

#layout.layout.sidebar-collapsed > .sidebar .nav-btn {
  width: 3rem;
  min-height: 3rem;
  height: 3rem;
  justify-content: center;
  padding: 0;
  border-radius: var(--radius-lg);
}

#layout.layout.sidebar-collapsed > .sidebar .nav-icon {
  width: 2rem;
  height: 2rem;
  flex-basis: 2rem;
}

#layout.layout.sidebar-collapsed > .sidebar #sidebar-toggle {
  align-self: center;
}

/* Footer remains part of the shell but never controls workspace width. */
#app-shell > .app-footer {
  width: calc(100% - var(--size-sidebar-expanded));
  min-width: 0;
  margin-left: var(--size-sidebar-expanded);
  padding: var(--space-4) clamp(var(--space-5), 2vw, var(--space-7));
  border-top: 1px solid var(--color-border-subtle);
  background: rgba(8, 12, 20, 0.72);
  color: var(--color-text-muted);
  transition:
    width var(--duration-normal) var(--ease-standard),
    margin-left var(--duration-normal) var(--ease-standard);
}

#app-shell:has(#layout.sidebar-collapsed) > .app-footer {
  width: calc(100% - var(--size-sidebar-collapsed));
  margin-left: var(--size-sidebar-collapsed);
}

/* Required desktop viewport tuning */
@media (max-width: 1440px) {
  #app-shell > .app-header,
  #app-shell:has(#layout.sidebar-collapsed) > .app-header {
    padding-inline: var(--space-5);
  }

  #layout.layout {
    padding:
      var(--space-5)
      var(--space-5)
      var(--space-8)
      calc(var(--size-sidebar-expanded) + var(--space-5));
  }

  #layout.layout.sidebar-collapsed {
    padding-left: calc(var(--size-sidebar-collapsed) + var(--space-5));
  }
}

@media (max-width: 1280px) {
  #app-shell .user-menu-trigger {
    max-width: 14rem;
  }

  #layout.layout {
    padding:
      var(--space-4)
      var(--space-4)
      var(--space-8)
      calc(var(--size-sidebar-expanded) + var(--space-4));
  }

  #layout.layout.sidebar-collapsed {
    padding-left: calc(var(--size-sidebar-collapsed) + var(--space-4));
  }
}

/*
 * Existing small-screen fallback is preserved. It is outside the required
 * desktop matrix but prevents the shell from forcing horizontal overflow.
 */
@media (max-width: 980px) {
  #app-shell > .app-header {
    position: static;
    width: 100%;
    height: auto;
    min-height: var(--size-header);
    align-items: center;
    flex-direction: row;
    margin-left: 0;
    padding-block: var(--space-3);
  }

  #app-shell .brand-row {
    max-width: calc(100% - 12rem);
  }

  #app-shell .sync-badge,
  #app-shell .online-users {
    display: none !important;
  }

  #app-shell .user-menu-trigger {
    max-width: 10rem;
  }

  #layout.layout,
  #layout.layout.sidebar-collapsed {
    padding: var(--space-4);
  }

  #layout > .sidebar,
  #layout.layout.sidebar-collapsed > .sidebar {
    position: static;
    width: 100% !important;
    min-width: 0 !important;
    max-height: none;
    padding: var(--space-3);
    overflow: visible;
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-xl);
  }

  #layout > .sidebar .sidebar-menu {
    overflow: visible;
    padding-right: 0;
  }

  #layout.layout.sidebar-collapsed > .sidebar .nav-label,
  #layout.layout.sidebar-collapsed > .sidebar .nav-section-label,
  #layout.layout.sidebar-collapsed > .sidebar .nav-text {
    display: inline !important;
  }

  #layout.layout.sidebar-collapsed > .sidebar .nav-section {
    justify-items: stretch;
  }

  #layout.layout.sidebar-collapsed > .sidebar .nav-btn {
    width: 100%;
    min-height: 2.75rem;
    height: 2.75rem;
    justify-content: flex-start;
    padding-inline: var(--space-3);
  }

  #layout > .sidebar #sidebar-toggle,
  #layout.layout.sidebar-collapsed > .sidebar #sidebar-toggle {
    position: static;
    align-self: flex-end;
    box-shadow: none;
  }

  #app-shell > .app-footer,
  #app-shell:has(#layout.sidebar-collapsed) > .app-footer {
    width: 100%;
    margin-left: 0;
  }
}

[data-theme="light"] #app-shell > .app-header {
  border-bottom-color: var(--color-border-default);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.05);
}

[data-theme="light"] #layout > .sidebar {
  border-color: var(--color-border-default);
  background: var(--color-bg-surface);
  box-shadow: none;
}

[data-theme="light"] #layout > .sidebar #sidebar-toggle {
  background: var(--color-bg-surface-subtle);
  box-shadow: none;
}

[data-theme="light"] #app-shell > .app-footer {
  border-top-color: var(--color-border-default);
  background: rgba(255, 255, 255, 0.78);
}

/* Premium ERP navigation treatment */
#layout > .sidebar {
  padding: var(--space-6) var(--space-5) var(--space-4);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background:
    radial-gradient(circle at 14% 4%, rgba(65, 105, 225, 0.1), transparent 24rem),
    #080e19;
}

#layout > .sidebar .sidebar-top {
  min-height: 5.5rem;
  margin: 0;
  padding: 0 0 var(--space-5);
}

#layout > .sidebar .sidebar-brand {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-3);
}

#layout > .sidebar .sidebar-brand img {
  width: 2.5rem;
  height: 2.5rem;
  flex: 0 0 2.5rem;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(58, 102, 255, 0.28));
}

#layout > .sidebar .nav-label {
  color: #f7f9ff;
  font-size: var(--font-size-xs);
}

#layout > .sidebar .sidebar-menu {
  padding: var(--space-3) var(--space-1) var(--space-2) 0;
}

#layout > .sidebar .nav-section {
  gap: var(--space-2);
  padding: var(--space-5) 0;
}

#layout > .sidebar .nav-section-label {
  padding: 0 var(--space-3) var(--space-2);
  color: #b8b3dd;
  font-size: var(--font-size-xs);
}

#layout > .sidebar .nav-btn {
  min-height: 3.4rem;
  height: 3.4rem;
  border-radius: var(--radius-md);
  color: #d9e1f3;
}

#layout > .sidebar .nav-btn:hover {
  background: rgba(89, 119, 255, 0.1);
  color: #fff;
}

#layout > .sidebar .nav-btn.active {
  position: relative;
  background: linear-gradient(105deg, #2f6cff 0%, #5b72ef 100%);
  color: #fff;
  box-shadow:
    0 12px 28px rgba(44, 95, 255, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

#layout > .sidebar .nav-btn.active::before {
  position: absolute;
  top: 0.65rem;
  bottom: 0.65rem;
  left: 0;
  width: 3px;
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  background: #58d5ff;
  box-shadow: 0 0 14px rgba(88, 213, 255, 0.9);
  content: "";
}

#layout > .sidebar .nav-icon {
  color: #aebbd4;
}

#layout > .sidebar .nav-icon svg {
  width: 1.45rem;
  height: 1.45rem;
  stroke-width: 1.7;
}

#layout > .sidebar .nav-btn.active .nav-icon {
  color: #fff;
}

#layout > .sidebar .nav-text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

#layout > .sidebar #sidebar-toggle {
  align-self: auto;
  margin: 0;
  border-color: rgba(255, 255, 255, 0.04);
  background: rgba(18, 29, 50, 0.92);
  color: #c9d5f0;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.22);
}

#layout > .sidebar .sidebar-footer {
  flex: 0 0 auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

#layout > .sidebar .sidebar-theme-control {
  display: flex;
  min-height: 3rem;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(137, 154, 188, 0.16);
  border-radius: var(--radius-md);
  background: rgba(7, 13, 24, 0.34);
}

#layout > .sidebar .sidebar-theme-control .theme-toggle {
  width: 2rem;
  height: 2rem;
  padding: 0.4rem;
  border: 0;
  background: transparent;
  color: #6b91ff;
}

#layout > .sidebar .sidebar-theme-label::before {
  color: #6b91ff;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  content: "Dark";
}

[data-theme="light"] #layout > .sidebar .sidebar-theme-label::before {
  content: "Light";
}

#layout.layout.sidebar-collapsed > .sidebar .sidebar-top {
  position: relative;
  min-height: auto;
  padding: 0 0 var(--space-3);
}

#layout.layout.sidebar-collapsed > .sidebar .sidebar-brand {
  justify-content: center;
}

#layout.layout.sidebar-collapsed > .sidebar .sidebar-brand img {
  width: 2.25rem;
  height: 2.25rem;
  flex-basis: 2.25rem;
}

#layout.layout.sidebar-collapsed > .sidebar #sidebar-toggle {
  position: absolute;
  top: 0;
  right: calc(-1 * var(--space-2));
  width: 2rem;
  height: 2rem;
  min-height: 2rem;
}

#layout.layout.sidebar-collapsed > .sidebar .sidebar-theme-control {
  justify-content: center;
  padding-inline: 0;
}

#layout.layout.sidebar-collapsed > .sidebar .sidebar-theme-label {
  display: none;
}

[data-theme="light"] #layout > .sidebar .nav-label {
  color: var(--color-text-primary);
}

[data-theme="light"] #layout > .sidebar .nav-section-label {
  color: #716b91;
}

[data-theme="light"] #layout > .sidebar .nav-btn {
  color: var(--color-text-secondary);
}

[data-theme="light"] #layout > .sidebar .nav-btn.active {
  color: #fff;
}

@media (max-width: 980px) {
  #layout > .sidebar .sidebar-top,
  #layout.layout.sidebar-collapsed > .sidebar .sidebar-top {
    min-height: auto;
  }

  #layout.layout.sidebar-collapsed > .sidebar #sidebar-toggle {
    position: static;
    width: var(--size-control-md);
    height: var(--size-control-md);
    min-height: var(--size-control-md);
  }

  #layout.layout.sidebar-collapsed > .sidebar .sidebar-theme-label {
    display: inline;
  }
}