/* Shared app top nav + mobile sidebar
   Use with views/partials/app-nav.ejs on any page. */

:root {
  --app-nav-pad-x: clamp(1rem, 4vw, 4rem);
  --app-nav-primary: #543ae3;
  --app-nav-primary-dark: #4630c4;
  --app-nav-primary-light: #f3f0ff;
  --app-nav-bg: #ffffff;
  --app-nav-text: #111827;
  --app-nav-text-muted: #64748b;
  --app-nav-border: #e2e8f0;
  --app-nav-radius-md: 14px;
  --app-nav-fast: 0.15s ease;
  --app-nav-base: 0.25s ease;
}

/* ——— Desktop / tablet top nav ——— */
.app-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem var(--app-nav-pad-x);
  background: white;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  position: sticky;
  top: 0;
  border-bottom-color: rgba(84, 58, 227, 0.08);
  z-index: 100;
  /* box-shadow: 0 8px 8px rgba(15, 23, 36, 0.06); */
  transition: box-shadow var(--app-nav-base), background var(--app-nav-base), border-color var(--app-nav-base);
}

.app-nav.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: rgba(84, 58, 227, 0.08);
  box-shadow: 0 8px 8px rgba(15, 23, 36, 0.06);
}

.app-nav-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-shrink: 0;
  min-width: 0;
}

.app-nav-left > a {
  display: inline-flex;
  flex-shrink: 0;
}

.app-nav img,
.app-nav-left img {
  width: 180px;
  height: auto;
  display: block;
}

.app-nav .class-select {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 260px;
  padding: 8px 14px;
  background: var(--app-nav-primary-light);
  color: var(--app-nav-primary);
  border: 1px solid rgba(84, 58, 227, 0.15);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: transform var(--app-nav-fast), box-shadow var(--app-nav-fast);
}

.app-nav #class-select-label {
  width: auto;
  max-width: 160px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  text-transform: capitalize;
}

.app-nav .class-select:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(84, 58, 227, 0.12);
}

.app-nav .app-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.app-nav [hidden] {
  display: none !important;
}

.app-nav .app-menu a {
  color: var(--app-nav-text);
  font-weight: 700;
  font-size: 16px;
  position: relative;
  transition: color var(--app-nav-fast);
  text-decoration: none;
}

.app-nav .app-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--app-nav-primary);
  transition: width var(--app-nav-base);
}

.app-nav .app-menu a:hover,
.app-nav .app-menu a.is-active {
  color: var(--app-nav-primary);
}

.app-nav .app-menu a:hover::after,
.app-nav .app-menu a.is-active::after {
  width: 100%;
}

.app-nav .mobile-nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1.5px solid var(--app-nav-border);
  border-radius: 12px;
  background: #fff;
  color: var(--app-nav-primary);
  font-size: 18px;
  cursor: pointer;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  transition: transform var(--app-nav-fast), box-shadow var(--app-nav-fast), border-color var(--app-nav-fast);
}

.app-nav .mobile-nav-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(84, 58, 227, 0.3);
  box-shadow: 0 8px 8px rgba(84, 58, 227, 0.12);
}

.app-nav .landing-mobile-auth {
  display: none;
}

/* ——— Auth buttons (guest) ——— */
.nav-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
}

.nav-buttons button {
  border: none;
  padding: 8px 16px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.nav-buttons button:hover {
  transform: translateY(-2px);
}

.nav-buttons button:active {
  transform: translateY(0) scale(0.98);
}

#sign-in-button {
  background-color: #fff;
  color: #543ae3;
  border: 1.5px solid #e2e8f0;
}

#sign-up-button {
  background-color: #543ae3;
  color: #fff;
  border: 1.5px solid #543ae3;
}

.landing-mobile-auth {
  display: none;
}

.landing-mobile-auth--stacked {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 10px;
  margin-left: 0;
}

.landing-mobile-auth--stacked button {
  width: 100%;
}

.landing-mobile-auth button {
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
}

.landing-mobile-auth-login {
  background: transparent;
  color: #543ae3;
  border: 1.5px solid #e2e8f0;
}

.landing-mobile-auth-signup {
  background: #543ae3;
  color: #fff;
  border: 1.5px solid #543ae3;
}

[data-auth-nav-root] {
  display: contents;
}

/* ——— Logged-in user menu ——— */
.user-nav-menu {
  position: relative;
}

.user-nav-menu--home .user-nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 6px;
  border: 1.5px solid var(--app-nav-border);
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
  appearance: none;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: var(--app-nav-text);
  text-decoration: none;
}

.user-nav-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--app-nav-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}

.user-nav-name {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-nav-chevron {
  font-size: 10px;
  color: var(--app-nav-text-muted);
}

.user-nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--app-nav-border);
  border-radius: var(--app-nav-radius-md);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
  z-index: 1000;
  overflow: hidden;
}

.user-nav-dropdown[hidden] {
  display: none !important;
}

.user-nav-dropdown-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--app-nav-border);
}

.user-nav-dropdown-header strong {
  font-size: 14px;
  color: var(--app-nav-text);
}

.user-nav-dropdown-header span {
  font-size: 12px;
  color: var(--app-nav-text-muted);
}

.user-nav-dropdown-link {
  display: block;
  padding: 12px 16px;
  border-bottom: 1px solid var(--app-nav-border);
  color: var(--app-nav-text);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.user-nav-dropdown-link:hover {
  background: #f5f3ff;
  color: var(--app-nav-primary);
}

.user-nav-dropdown button {
  width: 100%;
  padding: 12px 16px;
  border: none;
  background: #fff;
  text-align: left;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: #dc2626;
  cursor: pointer;
}

.user-nav-dropdown button:hover {
  background: #fef2f2;
}

.user-nav-logout-btn {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--app-nav-border);
  border-radius: 12px;
  background: #fff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: #dc2626;
  cursor: pointer;
}

.mobile-user-name {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--app-nav-text);
  margin-bottom: 8px;
}

/* ——— Mobile sidebar ——— */
.mobile-sidebar {
  position: fixed;
  inset: 0;
  z-index: 200;
  pointer-events: none;
  visibility: hidden;
}

.mobile-sidebar.is-open {
  pointer-events: auto;
  visibility: visible;
}

.mobile-sidebar-backdrop {
  position: absolute;
  inset: 0;
  border: none;
  background: rgba(15, 23, 36, 0.45);
  opacity: 0;
  transition: opacity var(--app-nav-base);
  cursor: pointer;
}

.mobile-sidebar.is-open .mobile-sidebar-backdrop {
  opacity: 1;
}

.mobile-sidebar-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: min(300px, 86vw);
  height: 100%;
  background: #fff;
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1rem 1.5rem;
  box-shadow: 8px 0 40px rgba(15, 23, 36, 0.12);
  transform: translateX(-100%);
  transition: transform var(--app-nav-base);
}

.mobile-sidebar.is-open .mobile-sidebar-panel {
  transform: translateX(0);
}

.mobile-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--app-nav-border);
}

.mobile-sidebar-header img {
  width: 130px;
  height: auto;
}

.mobile-sidebar-close {
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 10px;
  background: var(--app-nav-primary-light);
  color: var(--app-nav-primary);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-sidebar-class {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 1rem;
  border: 1px solid rgba(84, 58, 227, 0.15);
  border-radius: 14px;
  background: var(--app-nav-primary-light);
  color: var(--app-nav-primary);
  font-size: 13px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
}

.mobile-sidebar-class span {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mobile-sidebar-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  overflow-y: auto;
  margin: 0;
  padding: 0;
}

.mobile-sidebar-menu a {
  display: block;
  padding: 14px 16px;
  border-radius: 14px;
  color: var(--app-nav-text);
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: background var(--app-nav-fast), color var(--app-nav-fast);
}

.mobile-sidebar-menu a:hover,
.mobile-sidebar-menu a.is-active {
  background: var(--app-nav-primary-light);
  color: var(--app-nav-primary);
}

.mobile-sidebar-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--app-nav-border);
}

.mobile-sidebar-actions .landing-mobile-auth--stacked {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 10px;
  margin-left: 0;
}

.mobile-sidebar-actions .landing-mobile-auth--stacked button {
  width: 100%;
}

/* ——— Responsive ——— */
@media (max-width: 1200px) {
  :root {
    --app-nav-pad-x: 2rem;
  }

  .app-nav img,
  .app-nav-left img {
    width: 150px;
  }
}

@media (max-width: 992px) {
  :root {
    --app-nav-pad-x: 1.25rem;
  }

  .app-nav {
    flex-wrap: nowrap;
    gap: 0.75rem;
    padding: 1rem var(--app-nav-pad-x);
  }

  .app-nav-left {
    flex: 1;
  }

  .app-nav .app-menu {
    display: none;
  }

  .app-nav .class-select {
    max-width: min(180px, 42vw);
  }

  .app-nav #class-select-label {
    max-width: 110px;
  }

  .app-nav .mobile-nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .app-nav .nav-buttons,
  .app-nav .landing-mobile-auth,
  .app-nav .user-nav-menu {
    display: none !important;
  }
}

@media (max-width: 768px) {
  :root {
    --app-nav-pad-x: 1rem;
  }

  .app-nav {
    padding: 0.85rem 1rem;
  }

  .app-nav .class-select {
    display: none;
  }

  .app-nav img,
  .app-nav-left img {
    width: 130px;
  }

  .mobile-sidebar-panel {
    width: min(100vw, 320px);
  }
}