/* ==========================================================================
   4ADV — Layout: Sidebar, Header, Main Content
   ========================================================================== */

/* ── App Shell ─────────────────────────────────────────────────────────── */
.app-shell {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* ── Sidebar ───────────────────────────────────────────────────────────── */
.sidebar {
  position: relative;
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  background: #FFFFFF;
  border-right: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition-smooth), width var(--transition-smooth), min-width var(--transition-smooth);
}

.sidebar.collapsed {
  width: 72px;
  min-width: 72px;
}

.sidebar.collapsed .logo-subtitle,
.sidebar.collapsed .logo-text-adv,
.sidebar.collapsed .nav-section-label,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .nav-badge,
.sidebar.collapsed .sidebar-user-info,
.sidebar.collapsed .sidebar-user-chevron,
.sidebar.collapsed .sidebar-logout span {
  display: none;
}

.sidebar.collapsed .sidebar-logo {
  padding: 24px 0 20px;
  display: flex;
  justify-content: center;
}

.sidebar.collapsed .nav-item,
.sidebar.collapsed .sidebar-user,
.sidebar.collapsed .sidebar-logout {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

.sidebar-logo {
  padding: 24px 24px 20px;
  border-bottom: 1px solid var(--gray-100);
}

.sidebar-logo .logo-mark {
  display: flex;
  align-items: center;
  gap: 4px;
}

.sidebar-logo .logo-text-4 {
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -1px;
  line-height: 1;
}

.sidebar-logo .logo-text-adv {
  font-size: 28px;
  font-weight: 300;
  color: var(--primary-500);
  letter-spacing: -0.5px;
  line-height: 1;
}

.sidebar-logo .logo-subtitle {
  font-size: 9px;
  font-weight: 600;
  color: var(--gray-400);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-top: 4px;
}

/* Nav */
.sidebar-nav {
  flex: 1;
  padding: 12px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section-label {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 16px 12px 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: var(--font-base);
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  user-select: none;
}

.nav-item:hover {
  background: var(--gray-50);
  color: var(--gray-800);
}

.nav-item.active {
  background: var(--primary-50);
  color: var(--primary-600);
  font-weight: 600;
}

.nav-item.active .nav-icon {
  color: var(--primary-500);
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.nav-item:hover .nav-icon {
  color: var(--gray-600);
}

.nav-item.active .nav-icon {
  color: var(--primary-500);
}

.nav-badge {
  margin-left: auto;
  background: var(--danger-500);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  line-height: 1.3;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--gray-100);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.sidebar-user:hover {
  background: var(--gray-50);
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--primary-100);
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-sm);
  flex-shrink: 0;
}

.sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.sidebar-user-name {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--gray-800);
  line-height: 1.3;
}

.sidebar-user-role {
  font-size: var(--font-xs);
  color: var(--gray-400);
  line-height: 1.3;
}

.sidebar-user-chevron {
  width: 16px;
  height: 16px;
  color: var(--gray-400);
}

.sidebar-logout {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--gray-500);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 4px;
  width: 100%;
  text-align: left;
}

.sidebar-logout:hover {
  background: var(--danger-50);
  color: var(--danger-500);
}

.sidebar-logout .nav-icon {
  width: 18px;
  height: 18px;
}

/* ── Main Content Area ─────────────────────────────────────────────────── */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* ── Header ────────────────────────────────────────────────────────────── */
.main-header {
  height: var(--header-height);
  min-height: var(--header-height);
  background: #FFFFFF;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--content-padding);
  z-index: 50;
}

.header-left {
  display: flex;
  flex-direction: column;
  padding-left: 36px;
}

.header-greeting {
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.2;
}

.header-subtitle {
  font-size: var(--font-sm);
  color: var(--gray-500);
  margin-top: 2px;
}

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

/* Search */
.header-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 8px 16px;
  width: 280px;
  transition: all var(--transition-fast);
}

.header-search:focus-within {
  border-color: var(--primary-300);
  background: white;
  box-shadow: 0 0 0 3px var(--primary-50);
}

.header-search-icon {
  width: 18px;
  height: 18px;
  color: var(--gray-400);
  flex-shrink: 0;
}

.header-search input {
  flex: 1;
  font-size: var(--font-sm);
  color: var(--gray-700);
  min-width: 0;
}

.header-search input::placeholder {
  color: var(--gray-400);
}

.header-search-shortcut {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.header-search-shortcut kbd {
  font-family: var(--font-family);
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-400);
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  padding: 1px 5px;
  line-height: 1.4;
}

/* Header Icons */
.header-icon-btn {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--gray-500);
  transition: all var(--transition-fast);
}

.header-icon-btn:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

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

.header-icon-btn .notification-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: var(--danger-500);
  border-radius: var(--radius-full);
  border: 2px solid white;
}

.header-avatar {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--primary-100);
  color: var(--primary-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-sm);
  cursor: pointer;
  border: 2px solid var(--primary-200);
  transition: all var(--transition-fast);
}

.header-avatar:hover {
  border-color: var(--primary-400);
  transform: scale(1.05);
}

/* ── Main Content ──────────────────────────────────────────────────────── */
.main-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--content-padding);
  background: var(--gray-50);
}

/* Page animations */
.page-container {
  animation: fadeIn 0.3s ease-out;
}

/* ── Bottom Tip Bar ────────────────────────────────────────────────────── */
.bottom-tip-bar {
  background: #FFFFFF;
  border-top: 1px solid var(--gray-200);
  padding: 12px var(--content-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
}

.bottom-tip-content {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--font-sm);
  color: var(--gray-600);
}

.bottom-tip-icon {
  width: 20px;
  height: 20px;
  color: var(--warning-500);
  flex-shrink: 0;
}

.bottom-tip-content strong {
  color: var(--gray-800);
  font-weight: 600;
}

.bottom-tip-link {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--primary-500);
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.bottom-tip-link:hover {
  color: var(--primary-700);
}

/* ── Login Screen ────────────────────────────────────────────────────────── */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
  background: var(--gray-50);
}

.login-box {
  background: white;
  width: 100%;
  max-width: 400px;
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  text-align: center;
}

.login-logo {
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.login-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.login-subtitle {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-google:hover {
  background: var(--gray-50);
  box-shadow: var(--shadow-sm);
  border-color: var(--gray-400);
}

.login-footer {
  margin-top: 32px;
  font-size: 12px;
  color: var(--gray-400);
  line-height: 1.5;
}

.login-footer a {
  color: var(--primary-600);
  text-decoration: none;
}

.login-footer a:hover {
  text-decoration: underline;
}

/* ── Responsive ────────────────────────────────────────────────────────── */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--gray-600);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 99;
}

  @media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    transform: translateX(-100%);
    box-shadow: var(--shadow-xl);
  }

  .desktop-menu-btn {
    display: none !important;
  }

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

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

  .mobile-menu-btn {
    display: flex;
  }

  .header-search {
    width: 200px;
  }
}

@media (max-width: 640px) {
  .header-search {
    display: none;
  }

  .main-content {
    padding: 16px;
  }

  .header-greeting {
    font-size: var(--font-xl);
  }
}