:root {
        --bg-color: #191919;
        --text-color: #E0E0E0;
        --primary-accent: #FCCA36;
        --secondary-accent: #E6B52F;
        --topbar-bg: linear-gradient(135deg, #242424 0%, #2D2D2D 100%);
        --topbar-skew-bg: linear-gradient(135deg, #0F0F0F 0%, #1A1A1A 100%);
        --sidebar-bg: linear-gradient(180deg, #1F1F1F 0%, #242424 100%);
        --card-bg: linear-gradient(135deg, #242424 0%, #2D2D2D 100%);
        --border-color: rgba(255, 255, 255, 0.1);
        --input-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%);
        --shadow-light: rgba(0, 0, 0, 0.3);
        --shadow-medium: rgba(0, 0, 0, 0.6);
        --hover-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
        --active-bg: linear-gradient(135deg, rgba(252, 202, 54, 0.15) 0%, rgba(252, 202, 54, 0.08) 100%);
        --inactive-text: #C0C0C0;
        --subtitle-text: #A0A0A0;
        --disabled-bg: #3A3A3A;
        --disabled-text: #A0A0A0;
        --button-text-dark: #191919;
        --button-text-light: #FFFFFF;
        --success-color: #FCCA36;
        --danger-color: #E74C3C;
        --warning-box-bg: linear-gradient(135deg, rgba(252, 202, 54, 0.15) 0%, rgba(252, 202, 54, 0.08) 100%);
        --warning-box-border: #FCCA36;
        --warning-box-text: #FCCA36;
        --modal-bg: #2D2D2D;
        --modal-border: #3A3A3A;
        --modal-shadow: rgba(0, 0, 0, 0.8);
        --modal-button-secondary-color: #C0C0C0;
        --modal-button-secondary-border: #555;
        --modal-button-secondary-hover-bg: #3A3A3A;
        --modal-button-secondary-hover-color: #FCCA36;
        --primary-accent-rgb: 252, 202, 54;
        --success-color-rgb: 252, 202, 54;
        --danger-color-rgb: 231, 76, 60;
        --modal-backdrop-bg: rgba(0, 0, 0, 0.85);
    }
    body.light-theme {
        --bg-color: #F0F2F5;
        --text-color: #333333;
        --primary-accent: #1A73E8;
        --secondary-accent: #4285F4;
        --topbar-bg: linear-gradient(135deg, #FFFFFF 0%, #F8F9FA 100%);
        --topbar-skew-bg: linear-gradient(135deg, #E0E2E5 0%, #EAECEF 100%);
        --sidebar-bg: linear-gradient(180deg, #FFFFFF 0%, #F8F9FA 100%);
        --card-bg: linear-gradient(135deg, #FFFFFF 0%, #F8F9FA 100%);
        --border-color: rgba(0, 0, 0, 0.1);
        --input-bg: linear-gradient(135deg, rgba(0, 0, 0, 0.02) 0%, rgba(0, 0, 0, 0.01) 100%);
        --shadow-light: rgba(0, 0, 0, 0.1);
        --shadow-medium: rgba(0, 0, 0, 0.2);
        --hover-bg: linear-gradient(135deg, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.01) 100%);
        --active-bg: linear-gradient(135deg, rgba(26, 115, 232, 0.15) 0%, rgba(26, 115, 232, 0.08) 100%);
        --inactive-text: #555555;
        --subtitle-text: #666666;
        --disabled-bg: #CCCCCC;
        --disabled-text: #888888;
        --button-text-dark: #FFFFFF;
        --button-text-light: #191919;
        --success-color: #1A73E8;
        --danger-color: #D32F2F;
        --warning-box-bg: linear-gradient(135deg, rgba(26, 115, 232, 0.1) 0%, rgba(26, 115, 232, 0.05) 100%);
        --warning-box-border: #1A73E8;
        --warning-box-text: #333333;
        --modal-bg: #FFFFFF;
        --modal-border: #E0E0E0;
        --modal-shadow: rgba(0, 0, 0, 0.2);
        --modal-button-secondary-color: #666;
        --modal-button-secondary-border: #CCC;
        --modal-button-secondary-hover-bg: #F0F0F0;
        --modal-button-secondary-hover-color: #1A73E8;
        --primary-accent-rgb: 26, 115, 232;
        --success-color-rgb: 26, 115, 232;
        --danger-color-rgb: 211, 47, 47;
        --modal-backdrop-bg: rgba(255, 255, 255, 0.85);
    }
    .hidden {
        display: none !important;
    }
    html {
        height: 100%;
        margin: 0;
        padding: 0;
    }
    body {
        font-family: 'Inter', sans-serif;
        margin: 0;
        padding: 0;
        background-color: var(--bg-color);
        color: var(--text-color);
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
        transition: background-color 0.3s ease, color 0.3s ease;
    }
    body.no-scroll {
        overflow: hidden;
    }
    #appLayout.app-layout {
        display: grid;
        grid-template-columns: 250px 1fr;
        grid-template-rows: 70px 1fr;
        grid-template-areas:
          "sidebar topbar"
          "sidebar main-content";
        height: 100%;
        width: 100%;
        overflow-y: auto;
        overflow-x: hidden;
        display: none !important;
        opacity: 0;
        transition: opacity 0.5s ease-in-out;
        box-sizing: border-box;
        background-color: var(--bg-color);
    }
    #appLayout.app-layout.visible {
        display: grid !important;
        opacity: 1;
    }
    #appLayout.app-layout.sidebar-expanded {
        grid-template-columns: 250px 1fr;
    }
    #appLayout.app-layout.sidebar-collapsed-desktop {
        grid-template-columns: 70px 1fr;
    }
    .top-bar {
      grid-area: topbar;
      background: var(--topbar-bg);
      color: var(--text-color);
      padding: 0 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4), 0 2px 10px rgba(0, 0, 0, 0.2);
      position: relative;
      z-index: 10;
      transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
      backdrop-filter: blur(10px);
    }
    .top-bar::before {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100px;
        height: 100%;
        background: var(--topbar-skew-bg);
        transform: skewX(-10deg);
        transform-origin: bottom left;
        z-index: -1;
        box-shadow: 5px 0 15px var(--shadow-light);
        transition: background-color 0.3s ease, box-shadow 0.3s ease;
    }
    .top-bar .logo-placeholder {
        /* "RMC Portal" yazısını tamamen gizle */
        display: none !important;
        font-size: 20px;
        font-weight: 700;
        color: var(--primary-accent);
        font-family: 'Montserrat', sans-serif;
        padding-left: 20px;
        user-select: none;
        transition: opacity 0.3s ease, width 0.3s ease, padding-left 0.3s ease, color 0.3s ease;
        align-items: center;
    }
    .top-bar .logo-placeholder img {
        height: 40px;
        width: auto;
        margin-right: 10px;
    }
    .top-bar-right-group {
        display: flex;
        align-items: center;
        gap: 15px;
        margin-left: auto;
    }
    .user-info-display {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        font-size: 15px;
        color: var(--text-color);
        text-align: right;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 150px;
        transition: color 0.3s ease;
    }
    .user-info-display .user-name {
        font-weight: 500;
        color: var(--text-color);
    }
    .user-info-display .customer-no {
        font-size: 13px;
        color: var(--subtitle-text);
        margin-top: 2px;
    }
    .profile-icon-wrapper {
       position: relative;
    }
    .profile-icon {
      width: 45px;
      height: 45px;
      border-radius: 12px;
      background: linear-gradient(135deg, #2D2D2D 0%, #3A3A3A 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
      transition: all 0.3s ease;
    }
    .profile-icon:hover {
         background: linear-gradient(135deg, #3A3A3A 0%, #4A4A4A 100%);
         transform: translateY(-2px);
         box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    }
    body.light-theme .profile-icon {
        background: linear-gradient(135deg, #F8F8F8 0%, #E8E8E8 100%);
        border: 1px solid rgba(0, 0, 0, 0.1);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    }
    body.light-theme .profile-icon:hover {
        background: linear-gradient(135deg, #E8E8E8 0%, #D8D8D8 100%);
    }
    .profile-menu {
      position: fixed;
      background: linear-gradient(135deg, #2D2D2D 0%, #353535 100%);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 12px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
      min-width: 200px;
      z-index: 1001;
      overflow: hidden;
      display: block;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      backdrop-filter: blur(10px);
    }
    body.light-theme .profile-menu {
        background: linear-gradient(135deg, #FFFFFF 0%, #F8F9FA 100%);
        border-color: rgba(0, 0, 0, 0.15);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.05);
    }
    .profile-menu.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .profile-menu-item {
      padding: 15px 20px;
      cursor: pointer;
      font-size: 15px;
      color: var(--text-color);
      transition: all 0.2s ease;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      align-items: center;
    }
    .profile-menu-item:last-child {
         border-bottom: none;
    }
    .profile-menu-item:hover {
      background: linear-gradient(135deg, rgba(252, 202, 54, 0.1) 0%, rgba(252, 202, 54, 0.05) 100%);
      color: #FCCA36;
    }
    body.light-theme .profile-menu-item {
        color: #333333;
        border-bottom-color: rgba(0, 0, 0, 0.08);
    }
    body.light-theme .profile-menu-item:hover {
        background: linear-gradient(135deg, rgba(26, 115, 232, 0.1) 0%, rgba(26, 115, 232, 0.05) 100%);
        color: #1A73E8;
    }
    .nav-icon {
        width: 20px;
        height: 20px;
        margin-right: 15px;
        vertical-align: middle;
        transition: filter 0.2s ease;
    }
    .menu-item i.fas,
    .profile-menu-item i.fas {
        font-size: 20px;
        margin-right: 15px;
        color: var(--primary-accent);
    }
    .sidebar.collapsed .nav-icon {
        width: 24px;
        height: 24px;
    }
    .sidebar.collapsed .menu-item i.fas {
        font-size: 24px;
        margin-right: 0;
    }
    .profile-icon img.nav-icon {
         margin-right: 0;
         width: 24px;
         height: 24px;
    }
    .create-btn .nav-icon {
        margin-right: 10px;
        width: 20px;
        height: 20px;
        filter: invert(100%) brightness(0.15);
        transition: filter 0.3s ease;
    }
    .sidebar.collapsed .create-btn .nav-icon {
        margin-right: 0;
        width: 24px;
        height: 24px;
    }
    .notification-icon-wrapper {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .notification-icon {
        width: 45px;
        height: 45px;
        border-radius: 12px;
        background: linear-gradient(135deg, #2D2D2D 0%, #3A3A3A 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        border: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .notification-icon:hover {
        background: linear-gradient(135deg, #3A3A3A 0%, #4A4A4A 100%);
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    }
    .notification-icon img.nav-icon {
        width: 24px;
        height: 24px;
        margin-right: 0;
    }
    .notification-menu {
        position: fixed;
        background: var(--modal-bg);
        border: 1px solid var(--modal-border);
        border-radius: 12px;
        box-shadow: 0 10px 40px var(--modal-shadow), 0 0 0 1px rgba(255, 255, 255, 0.05);
        min-width: 300px;
        max-width: 400px;
        max-height: 500px;
        overflow-y: auto;
        z-index: 1001;
        overflow-x: hidden;
        display: block;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        backdrop-filter: blur(10px);
    }
    body.light-theme .notification-menu {
        box-shadow: 0 10px 40px var(--modal-shadow), 0 0 0 1px rgba(0, 0, 0, 0.05);
    }
    .notification-menu.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .notification-menu h4 {
        color: var(--primary-accent);
        font-size: 1.2em;
        padding: 15px 20px;
        margin: 0;
        border-bottom: 1px solid var(--modal-border);
        font-family: 'Montserrat', sans-serif;
    }
    .notification-list-container {
        padding: 0;
    }
    .notification-item {
        padding: 15px 20px;
        border-bottom: 1px solid var(--modal-border);
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }
    .notification-item:last-child {
         border-bottom: none;
    }
    .notification-item:hover {
        background: var(--hover-bg);
    }
    .notification-item.read {
        opacity: 0.7;
        background: linear-gradient(135deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.05) 100%);
        color: var(--subtitle-text);
    }
    .notification-item.read:hover {
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
    }
    body.light-theme .notification-item.read {
        background: linear-gradient(135deg, rgba(0, 0, 0, 0.02) 0%, rgba(0, 0, 0, 0.01) 100%);
    }
    body.light-theme .notification-item.read:hover {
        background: linear-gradient(135deg, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0.02) 100%);
    }
    .notification-item-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        margin-bottom: 5px;
    }
    .notification-item-title {
        font-weight: 600;
        color: var(--text-color);
        font-size: 1em;
        flex-grow: 1;
    }
    .notification-item.read .notification-item-title {
        color: var(--inactive-text);
    }
    .notification-item-delete-btn {
        background: none;
        border: none;
        color: var(--danger-color);
        cursor: pointer;
        font-size: 0.8em;
        font-weight: 600;
        padding: 5px 10px;
        border-radius: 5px;
        transition: all 0.2s ease;
        flex-shrink: 0;
    }
    .notification-item-delete-btn:hover {
        background-color: rgba(231, 76, 60, 0.2);
        color: #FF7070;
    }
    body.light-theme .notification-item-delete-btn:hover {
        background-color: rgba(211, 47, 47, 0.1);
        color: #FF5555;
    }
    .notification-item-message {
        font-size: 0.9em;
        color: var(--inactive-text);
        line-height: 1.4;
        text-align: left;
    }
    .notification-item.read .notification-item-message {
        color: #888888;
    }
    body.light-theme .notification-item.read .notification-item-message {
        color: #999999;
    }
    .notification-item-date {
        font-size: 0.75em;
        color: #666666;
        margin-top: 10px;
        text-align: left;
        width: 100%;
    }
    body.light-theme .notification-item-date {
        color: #999999;
    }
    .no-notifications-message {
        padding: 20px;
        text-align: center;
        color: var(--subtitle-text);
        font-style: italic;
        font-size: 0.9em;
    }
    #markAllAsReadBtn {
        width: calc(100% - 40px);
        margin: 10px 20px 20px 20px;
        padding: 10px 15px;
        font-size: 0.9em;
        border-radius: 8px;
        background-color: var(--disabled-bg);
        border-color: #555555;
        color: var(--text-color);
    }
    #markAllAsReadBtn:hover {
        background-color: #4A4A4A;
        border-color: var(--primary-accent);
    }
    body.light-theme #markAllAsReadBtn {
        background-color: #E0E0E0;
        border-color: #CCCCCC;
        color: var(--inactive-text);
    }
    body.light-theme #markAllAsReadBtn:hover {
        background-color: #D0D0D0;
        border-color: var(--primary-accent);
    }
    body.light-theme .notification-icon {
        background: linear-gradient(135deg, #F8F8F8 0%, #E8E8E8 100%);
        border: 1px solid rgba(0, 0, 0, 0.1);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    }
    body.light-theme .notification-icon:hover {
        background: linear-gradient(135deg, #E8E8E8 0%, #D8D8D8 100%);
    }
    .sidebar {
      grid-area: sidebar;
      background: var(--sidebar-bg);
      color: var(--text-color);
      padding: 20px 0;
      overflow-y: auto;
      box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3), inset -1px 0 0 rgba(255, 255, 255, 0.05);
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      width: 250px;
      position: relative;
      z-index: 20;
      transform: translateX(0);
    }
    .sidebar.collapsed {
        width: 70px;
        align-items: center;
        overflow: hidden;
    }
    .sidebar.collapsed .sidebar-text {
        opacity: 0;
        width: 0;
        overflow: hidden;
        transition: opacity 0.3s ease, width 0.3s ease;
        pointer-events: none;
        display: none;
    }
    .sidebar.collapsed .create-btn {
        padding: 12px;
        width: 45px;
        height: 45px;
        border-radius: 50%;
        margin: 0 auto 20px auto;
    }
    .sidebar.collapsed .create-btn .nav-icon {
        margin-right: 0;
    }
    .sidebar.collapsed .menu-item .nav-icon,
    .sidebar.collapsed .sub-menu-item .nav-icon {
        margin-right: 0;
    }
    .sidebar.collapsed .menu-item,
    .sidebar.collapsed .sub-menu-item {
        padding: 12px 0;
        justify-content: center;
    }
    .sidebar.collapsed .menu-item.has-submenu::after {
        display: none;
    }
    .sidebar-text {
        transition: opacity 0.3s ease, width 0.3s ease;
    }
    .logo {
      text-align: center;
      margin-bottom: 15px;
      width: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .logo-link {
      display: inline-block;
      margin-bottom: 10px;
    }
    .logo-text-container {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }
    .logo-text-container h2 {
      margin: 0;
      color: var(--primary-accent);
      font-family: 'Montserrat', sans-serif;
      font-size: 24px;
      font-weight: 700;
      letter-spacing: 1px;
    }
     .sidebar .title-subtitle {
         font-size: 14px;
         color: var(--subtitle-text);
         margin-top: 5px;
     }
    .sidebar hr {
      border: none;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin: 15px 15px;
      width: calc(100% - 30px);
      transition: border-color 0.3s ease;
    }
    body.light-theme .sidebar hr {
      border-top: 1px solid rgba(0, 0, 0, 0.1);
    }
    .create-btn {
      width: calc(100% - 40px);
      margin: 15px 20px;
      padding: 12px;
      background: linear-gradient(135deg, var(--primary-accent) 0%, var(--secondary-accent) 100%);
      color: var(--button-text-dark);
      border: none;
      border-radius: 12px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      text-transform: uppercase;
      letter-spacing: 0.8px;
      box-shadow: 0 6px 20px rgba(var(--primary-accent-rgb), 0.4), 0 2px 10px rgba(var(--primary-accent-rgb), 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      overflow: hidden;
      z-index: 1;
    }
    .create-btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 50%;
        height: 100%;
        background: rgba(255, 255, 255, 0.3);
        transform: skewX(-30deg);
        transition: all 0.7s ease;
        z-index: 0;
    }
    .create-btn:hover::before {
        left: 120%;
    }
    .create-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 30px rgba(var(--primary-accent-rgb), 0.6), 0 44px 15px rgba(var(--primary-accent-rgb), 0.3);
    }
    .menu {
      list-style: none;
      padding: 0;
      margin: 15px 0;
      width: 100%;
      flex-grow: 1;
    }
    .menu-item {
      padding: 12px 20px;
      cursor: pointer;
      font-size: 16px;
      color: var(--inactive-text);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border-radius: 0;
      display: flex;
      align-items: center;
      position: relative;
    }
     .menu-item:hover {
       background: var(--hover-bg);
       color: var(--text-color);
       transform: translateX(5px);
     }
     .menu-item.active {
       background: var(--active-bg);
       color: var(--primary-accent);
       font-weight: 700;
       border-left: 4px solid var(--primary-accent);
       padding-left: 16px;
     }
     .menu-item.has-submenu {
         position: relative;
     }
     .menu-item.has-submenu::after {
         position: absolute;
         right: 20px;
         top: 50%;
         transform: translateY(-50%);
         transition: transform 0.3s ease;
         font-size: 12px;
         color: var(--inactive-text);
     }
     .menu-item.has-submenu.open::after {
         transform: translateY(-50%) rotate(180deg);
     }
    .sub-menu {
      list-style: none;
      padding: 0;
      margin: 0;
      display: none;
      overflow: hidden;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      max-height: 0;
      opacity: 0;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
      border-radius: 0 0 12px 12px;
      margin-left: 10px;
      margin-right: 10px;
    }
    body.light-theme .sub-menu {
      background: linear-gradient(135deg, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.01) 100%);
    }
    .sub-menu.open {
        display: block;
        max-height: 500px;
        opacity: 1;
    }
    .sub-menu-item {
      padding: 10px 15px;
      cursor: pointer;
      font-size: 15px;
      color: var(--inactive-text);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      align-items: center;
      border-radius: 8px;
      margin: 5px 10px;
    }
    .sub-menu-item:hover {
      background: var(--hover-bg);
      color: var(--text-color);
      transform: translateX(3px);
    }
     .sub-menu-item.active {
        color: var(--primary-accent);
        font-weight: 600;
        background: linear-gradient(135deg, rgba(252, 202, 54, 0.1) 0%, rgba(252, 202, 54, 0.05) 100%);
     }
     body.light-theme .sub-menu-item.active {
        background: linear-gradient(135deg, rgba(26, 115, 232, 0.1) 0%, rgba(26, 115, 232, 0.05) 100%);
     }
     .sidebar .user-display {
         text-align: center;
         font-size: 0.9em;
         color: var(--subtitle-text);
         margin-top: 20px;
         padding: 0 15px;
         word-break: break-word;
     }
     .sidebar .user-display #portalVersionDisplay {
         display: block;
         color: var(--subtitle-text);
         font-weight: 500;
         margin-top: 5px;
         font-style: normal;
         font-family: 'Inter', sans-serif;
         font-size: 0.9em;
     }
     .sidebar .user-display strong.italic-portal-text {
         display: block;
         color: var(--text-color);
         font-weight: 600;
         margin-bottom: 5px;
         font-style: italic;
         font-family: 'Playfair Display', serif;
         font-size: 1.1em;
     }
    .sidebar .user-display a#portalVersionLink {
        text-decoration: none;
        color: inherit;
        cursor: pointer;
        display: block;
    }
    .sidebar .user-display a#portalVersionLink:hover #portalVersionDisplay {
        text-decoration: underline;
        color: var(--primary-accent);
    }
    .menu-toggle-btn {
        font-size: 24px;
        color: var(--primary-accent);
        cursor: pointer;
        z-index: 30;
        display: none;
    }
    #mainContent.main-content {
      grid-area: main-content;
      padding: 20px;
      overflow-y: auto;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      align-items: center;
      box-sizing: border-box;
      scrollbar-width: none;
      -ms-overflow-style: none;
      background: linear-gradient(135deg, #191919 0%, #1F1F1F 100%);
    }
    body.light-theme #mainContent.main-content {
      background: linear-gradient(135deg, #F0F2F5 0%, #FFFFFF 100%);
    }
    #mainContent.main-content::-webkit-scrollbar {
        display: none;
    }
    .access-denied-bar, .firebase-error-bar, .success-message-bar {
        position: fixed;
        bottom: 20px;
        right: 20px;
        min-width: 300px;
        max-width: 400px;
        padding: 15px 20px;
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 0.95em;
        font-weight: 500;
        text-align: left;
        color: var(--button-text-dark);
        border-radius: 12px;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 4px 15px rgba(0, 0, 0, 0.2);
        z-index: 2000;
        transform: translateX(450px);
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        opacity: 0;
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .access-denied-bar.show, .firebase-error-bar.show, .success-message-bar.show {
        transform: translateX(0);
        opacity: 1;
    }
    .access-denied-bar {
        background: linear-gradient(135deg, #FF6B6B 0%, #E74C3C 100%);
        color: var(--button-text-light);
    }
    .firebase-error-bar {
        background: linear-gradient(135deg, #FF6B6B 0%, #E74C3C 100%);
        color: var(--button-text-light);
    }
    .success-message-bar {
        background: linear-gradient(135deg, var(--success-color) 0%, var(--secondary-accent) 100%);
        color: var(--button-text-dark);
    }
    body.light-theme .success-message-bar {
        color: var(--button-text-light);
    }
    .access-denied-bar span.icon, .firebase-error-bar span.icon, .success-message-bar span.icon {
        font-size: 1.5em;
        line-height: 1;
        flex-shrink: 0;
    }
    @keyframes bounceIn {
        0% { transform: scale(0); opacity: 0; }
        50% { transform: scale(1.1); opacity: 1; }
        100% { transform: scale(1); }
    }
    @media (max-width: 480px) {
        .access-denied-bar, .firebase-error-bar, .success-message-bar {
            font-size: 0.9em;
            padding: 10px 15px;
            flex-direction: column;
        }
        .access-denied-bar span.icon, .firebase-error-bar span.icon, .success-message-bar span.icon {
            font-size: 1.2em;
            margin-bottom: 5px;
        }
    }
    .container {
        background: var(--card-bg);
        padding: 40px;
        border-radius: 15px;
        box-shadow: 0 10px 30px var(--shadow-medium);
        max-width: 500px;
        width: 100%;
        animation: fadeIn 0.8s ease-out;
        margin: 20px auto;
        border: 1px solid var(--border-color);
        color: var(--text-color);
        line-height: 1.6;
        box-sizing: border-box;
        transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }
    label {
        display: block;
        margin-bottom: 8px;
        font-weight: 500;
        color: var(--text-color);
    }
    input[type="email"] {
        width: 100%;
        padding: 12px 10px;
        border: 1px solid var(--border-color);
        border-radius: 8px;
        background-color: var(--input-bg);
        font-family: 'Inter', sans-serif;
        font-size: 1rem;
        color: var(--text-color);
        transition: all 0.3s ease;
        box-sizing: border-box;
        cursor: default;
    }
    input[type="email"]:focus {
        border-color: var(--primary-accent);
        box-shadow: 0 0 0 3px rgba(var(--primary-accent-rgb), 0.2);
        outline: none;
    }
    input[type="email"][readonly] {
        background-color: var(--input-bg);
        cursor: default;
    }
    .form-message {
        text-align: center;
        font-size: 1rem;
        padding: 15px;
        border-radius: 8px;
        margin-bottom: 20px;
        display: none;
        opacity: 0;
        transition: opacity 0.3s ease-in-out;
        color: var(--text-color);
    }
    .form-message.visible {
        display: block;
        opacity: 1;
    }
    .form-error-message {
        background-color: var(--warning-box-bg);
        border-left: 5px solid var(--warning-box-border);
        color: var(--warning-box-text);
        box-shadow: 0 2px 8px var(--shadow-light);
    }
    .form-success-message {
        background: linear-gradient(90deg, var(--success-color), #27AE60);
        color: var(--button-text-light);
        border-bottom: 3px solid #229954;
    }
    .reset-button {
        display: block;
        width: 100%;
        padding: 15px;
        background: linear-gradient(45deg, var(--primary-accent), var(--secondary-accent));
        color: var(--button-text-dark);
        border: none;
        border-radius: 10px;
        font-size: 1.1rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 8px 25px rgba(var(--primary-accent-rgb), 0.4);
        margin-bottom: 15px;
    }
    .reset-button:hover:not(:disabled) {
        opacity: 0.95;
        transform: translateY(-3px) scale(1.02);
        box-shadow: 0 10px 30px rgba(var(--primary-accent-rgb), 0.5);
    }
    .reset-button:disabled {
        background: var(--disabled-bg);
        color: var(--disabled-text);
        cursor: not-allowed;
        box-shadow: none;
        transform: none;
        opacity: 0.7;
        filter: grayscale(100%);
    }
    .home-button {
        display: block;
        width: 100%;
        padding: 15px;
        background: none;
        color: var(--primary-accent);
        border: 2px solid var(--primary-accent);
        border-radius: 8px;
        font-size: 1.1rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        margin-top: 15px;
        box-shadow: none;
        text-align: center;
        text-decoration: none;
    }
    .home-button:hover {
        background-color: var(--primary-accent);
        color: var(--button-text-dark);
        transform: translateY(-2px);
        box-shadow: 0 4px 10px rgba(var(--primary-accent-rgb), 0.3);
    }
    .profile-menu-item.has-submenu {
        position: relative;
    }
    .profile-menu-item.has-submenu#socialMediaServicesMenuItem::after {
        content: none;
    }
    .profile-sub-menu {
        list-style: none;
        padding: 0;
        margin: 0;
        display: none;
        overflow: hidden;
        max-height: 0;
        transition: max-height 0.3s ease-out, background-color 0.3s ease;
        background-color: rgba(0,0,0,0.1);
        width: 100%;
        box-sizing: border-box;
    }
    body.light-theme .profile-sub-menu {
        background-color: rgba(0,0,0,0.02);
    }
    .profile-sub-menu.open {
        max-height: 500px;
    }
    .profile-sub-menu-item {
        padding: 10px 20px 10px 45px;
        cursor: pointer;
        font-size: 15px;
        color: var(--inactive-text);
        transition: background-color 0.2s ease, color 0.2s ease;
        display: flex;
        align-items: center;
        position: relative;
    }
    .profile-sub-menu-item:hover {
        background-color: #3A3A3A;
        color: var(--text-color);
    }
    body.light-theme .profile-sub-menu-item:hover {
        background-color: #F0F0F0;
        color: var(--text-color);
    }
    .profile-sub-menu-item .nav-icon {
        filter: none;
    }
    body.light-theme .profile-menu-item.has-submenu::after {
        color: var(--subtitle-text);
    }
    .profile-sub-menu-warning {
        position: absolute;
        top: -5px;
        left: 50%;
        transform: translateX(-50%) translateY(0%);
        background-color: var(--primary-accent);
        color: var(--button-text-dark);
        padding: 5px 10px;
        border-radius: 5px;
        font-size: 0.8em;
        white-space: nowrap;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
        z-index: 10;
        pointer-events: none;
    }
    .profile-sub-menu-item:hover .profile-sub-menu-warning,
    .profile-sub-menu-item.active .profile-sub-menu-warning {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(-100%);
    }
    body.light-theme .profile-sub-menu-warning {
        background-color: #FFD700;
        color: var(--text-color);
    }
    .modal-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--modal-backdrop-bg);
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 2000;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease-in-out, visibility 0s linear 0.3s;
        backdrop-filter: blur(10px);
    }
    .modal-backdrop.show {
        opacity: 1;
        visibility: visible;
        transition-delay: 0s;
    }
    .modal-content.type-selection-modal {
        background-color: var(--modal-bg);
        padding: 30px;
        border-radius: 12px;
        box-shadow: 0 10px 30px var(--modal-shadow);
        width: 90%;
        max-width: 550px;
        position: relative;
        transform: scale(0.8);
        opacity: 0;
        transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), opacity 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        box-sizing: border-box;
        text-align: center;
        border: 1px solid var(--modal-border);
    }
    .modal-backdrop.show .modal-content.type-selection-modal {
        transform: scale(1);
        opacity: 1;
    }
    .modal-content.type-selection-modal .modal-title {
        font-size: 2.2em;
        margin-bottom: 25px;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--primary-accent);
        color: var(--primary-accent);
    }
    .release-type-options {
        display: flex;
        flex-direction: column;
        gap: 15px;
        margin-bottom: 30px;
    }
    .option-item {
        position: relative;
        display: flex;
        align-items: center;
        border: 2px solid var(--border-color);
        border-radius: 12px;
        padding: 15px 20px;
        cursor: pointer;
        transition: all 0.2s ease-in-out;
        box-shadow: 0 4px 10px var(--shadow-light);
        background-color: var(--card-bg);
    }
    .option-item:hover:not(.disabled-option) {
        border-color: var(--primary-accent);
        background-color: var(--hover-bg);
        transform: translateY(-3px);
        box-shadow: 0 6px 15px var(--shadow-medium);
    }
    .option-item.selected {
        border-color: var(--primary-accent);
        background-color: var(--hover-bg);
        box-shadow: 0 0 0 3px rgba(var(--primary-accent-rgb), 0.3);
    }
    .radio-input {
        display: none;
    }
    .radio-label {
        display: flex;
        align-items: center;
        width: 100%;
        cursor: pointer;
        color: var(--text-color);
        font-size: 1.1em;
        font-weight: 600;
    }
    .radio-label .label-text {
        flex-grow: 1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        min-width: 1px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .radio-label::before {
        content: '';
        display: inline-block;
        width: 20px;
        height: 20px;
        border: 2px solid var(--primary-accent);
        border-radius: 50%;
        margin-right: 15px;
        background-color: transparent;
        transition: all 0.2s ease;
        flex-shrink: 0;
    }
    .radio-input:checked + .radio-label::before {
        background-color: var(--primary-accent);
        border-color: var(--primary-accent);
        box-shadow: 0 0 0 4px rgba(var(--primary-accent-rgb), 0.3);
    }
    .radio-input:checked + .radio-label::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 25px;
        transform: translate(-50%, -50%) scale(0);
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background-color: var(--button-text-dark);
        transition: transform 0.2s ease;
    }
    body.light-theme .radio-input:checked + .radio-label::after {
        background-color: var(--button-text-light);
    }
    .radio-input:checked + .radio-label::after {
        transform: translate(-50%, -50%) scale(1);
    }
    .option-icon {
        font-size: 1.5em;
        margin-left: auto;
        color: var(--primary-accent);
        transition: color 0.2s ease;
    }
    .option-item.disabled-option {
        cursor: not-allowed;
        opacity: 0.6;
        background-color: var(--sidebar-bg);
        border-color: var(--border-color);
    }
    .option-item.disabled-option:hover {
        transform: none;
        box-shadow: 0 4px 10px var(--shadow-light);
        border-color: var(--border-color);
        background-color: var(--sidebar-bg);
    }
    .option-item.disabled-option .radio-label {
        color: var(--subtitle-text);
    }
    .option-item.disabled-option .option-icon {
        color: var(--disabled-bg);
    }
    .coming-soon-badge {
        background-color: #555555;
        color: #FFFFFF;
        font-size: 0.7em;
        font-weight: 700;
        padding: 4px 8px;
        border-radius: 5px;
        margin-left: 10px;
        animation: pulseBadge 1.5s infinite alternate;
    }
    body.light-theme .coming-soon-badge {
         background-color: #999999;
         color: #FFFFFF;
    }
    @keyframes pulseBadge {
        0% { transform: scale(1); opacity: 0.8; }
        100% { transform: scale(1.05); opacity: 1; }
    }
    .modal-info-message {
        background-color: var(--warning-box-bg);
        border-left: 5px solid var(--warning-box-border);
        color: var(--warning-box-text);
        padding: 10px 15px;
        border-radius: 8px;
        margin-top: 15px;
        text-align: center;
        font-size: 0.9em;
        font-weight: 500;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.3s ease-out, transform 0.3s ease-out;
    }
    .modal-info-message.show {
        opacity: 1;
        transform: translateY(0);
    }
    .modal-actions {
        display: flex;
        justify-content: flex-end;
        gap: 15px;
        margin-top: 30px;
    }
    .modal-primary-button,
    .modal-secondary-button {
        border: none;
        border-radius: 10px;
        padding: 12px 25px;
        font-size: 1em;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 5px 12px rgba(0, 0, 0, 0.3);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    .modal-primary-button:hover:not(:disabled) {
        opacity: 0.95;
        transform: translateY(-2px);
        box-shadow: 0 8px 18px rgba(var(--primary-accent-rgb), 0.5);
    }
    .modal-primary-button:disabled {
        background: var(--disabled-bg);
        color: var(--disabled-text);
        cursor: not-allowed;
        box-shadow: none;
        transform: none;
        opacity: 0.6;
    }
    .modal-secondary-button {
        background: none;
        color: var(--modal-button-secondary-color);
        border: 2px solid var(--modal-button-secondary-border);
        box-shadow: none;
    }
    .modal-secondary-button:hover {
        background-color: var(--modal-button-secondary-hover-bg);
        color: var(--modal-button-secondary-hover-color);
        border-color: var(--primary-accent);
        box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
    }
    @media (min-width: 769px) {
            .sidebar:not(.collapsed) .logo-text-container h2[data-lang-key="sidebarMainTitle"] {
                display: none !important;
            }
        }
        body.light-theme .sidebar:not(.collapsed) .logo-text-container h2[data-lang-key="sidebarMainTitle"] {
            display: none !important;
        }
    @media (max-width: 768px) {
        #appLayout.app-layout {
            grid-template-columns: 1fr;
            grid-template-areas: "topbar" "main-content";
            display: grid;
        }
        #appLayout.app-layout.sidebar-expanded,
        #appLayout.app-layout.sidebar-collapsed-desktop {
            grid-template-columns: 1fr;
        }
        .sidebar {
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            width: 250px;
            transform: translateX(-100%);
            transition: transform 0.3s ease-out;
            z-index: 1000;
            box-shadow: 2px 0 10px var(--shadow-light);
            padding: 20px 0;
            align-items: flex-start;
        }
        .sidebar.mobile-open {
            transform: translateX(0%);
        }
        .sidebar:not(.mobile-open) .sidebar-text {
            opacity: 0;
            width: 0;
            overflow: hidden;
            pointer-events: none;
            display: none;
        }
        .sidebar:not(.mobile-open) .create-btn {
            padding: 12px;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            margin: 0 auto 20px auto;
        }
        .sidebar:not(.mobile-open) .create-btn .nav-icon {
            margin-right: 0;
        }
        .sidebar:not(.mobile-open) .menu-item .nav-icon,
        .sidebar:not(.mobile-open) .sub-menu-item .nav-icon {
            margin-right: 0;
        }
        .sidebar:not(.mobile-open) .menu-item,
        .sidebar:not(.mobile-open) .sub-menu-item {
            padding: 12px 0;
            justify-content: center;
        }
        .sidebar:not(.mobile-open) .menu-item.has-submenu::after {
            display: none;
        }
        /* Top bar logo-placeholder artık tamamen gizli olduğu için bu kural gereksiz */
        /* .top-bar .logo-placeholder {
            display: none;
        } */
        .menu-toggle-btn {
            display: block;
            order: 1;
        }
        .top-bar-right-group {
            order: 2;
            margin-left: auto;
        }
        .sidebar .logo img {
            display: none !important;
        }
        #mainContent.main-content {
            padding: 10px;
            padding-bottom: 70px;
        }
        .container {
            padding: 25px;
            margin: 10px auto;
        }
        h1, h2 {
            font-size: 1.8em;
        }
        .reset-button, .home-button {
            font-size: 1rem;
        }
        .access-denied-bar, .firebase-error-bar, .success-message-bar {
            font-size: 0.9em;
            padding: 10px 15px;
        }
        .success-message-bar span.icon {
            font-size: 1.2em;
        }
        .premium-tooltip {
            max-width: calc(100vw - 40px);
        }
        .modal-content.type-selection-modal {
            padding: 20px;
        }
        .modal-content.type-selection-modal .modal-title {
            font-size: 1.8em;
            margin-bottom: 20px;
        }
        .option-item {
            padding: 12px 15px;
        }
        .radio-label {
            font-size: 1em;
        }
        .radio-label::before {
            width: 18px;
            height: 18px;
            margin-right: 10px;
        }
        .radio-input:checked + .radio-label::after {
            left: 23px;
            width: 8px;
            height: 8px;
        }
        .option-icon {
            font-size: 1.3em;
        }
        .coming-soon-badge {
            font-size: 0.65em;
            padding: 3px 6px;
        }
        .modal-info-message {
            padding: 8px 12px;
            font-size: 0.85em;
        }
        .modal-actions {
            flex-direction: column-reverse;
            gap: 10px;
            margin-top: 25px;
        }
        .modal-primary-button,
        .modal-secondary-button {
            width: 100%;
            padding: 10px 20px;
            font-size: 0.95em;
        }
        @media (max-width: 768px) {
            .notification-menu {
                min-width: calc(100% - 40px);
                max-width: 400px;
                width: calc(100% - 40px);
                left: 50%;
                right: auto;
                transform: translateX(-50%) translateY(-10px);
            }
            .notification-menu.is-open {
                top: 80px;
                transform: translateX(-50%) translateY(0);
            }
            .notification-icon-wrapper {
                margin-left: auto;
                margin-right: 0;
            }
            .user-info-display .customer-no {
                display: none;
            }
        }
    }
    .menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0,0,0,0.7);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease;
    }
    .menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    .construction-container {
        background-color: var(--card-bg);
        padding: 40px;
        border-radius: 15px;
        box-shadow: 0 10px 30px var(--shadow-medium);
        max-width: 600px;
        width: 90%;
        margin: 20px auto;
        border: 1px solid var(--border-color);
        color: var(--text-color);
        line-height: 1.6;
        box-sizing: border-box;
        animation: fadeIn 0.8s ease-out;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }
    .construction-container h1 {
        color: var(--primary-accent);
        font-family: 'Montserrat', sans-serif;
        font-size: 2.8em;
        margin-bottom: 20px;
        font-weight: 700;
        letter-spacing: -1px;
    }
    .construction-container p {
        font-size: 1.1em;
        margin-bottom: 30px;
        color: var(--inactive-text);
    }
    .construction-icon {
        font-size: 5rem;
        color: var(--primary-accent);
        margin-bottom: 25px;
        animation: pulse 2s infinite alternate;
    }
    @keyframes pulse {
        0% { transform: scale(1); opacity: 1; }
        50% { transform: scale(1.05); opacity: 0.8; }
        100% { transform: scale(1); opacity: 1; }
    }
    .back-button {
        display: inline-block;
        padding: 15px 30px;
        background: none;
        color: var(--primary-accent);
        border: 2px solid var(--primary-accent);
        border-radius: 8px;
        font-size: 1.1rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        text-decoration: none;
        text-transform: uppercase;
        letter-spacing: 0.8px;
        box-shadow: none;
    }
    .back-button:hover {
        background-color: var(--primary-accent);
        color: var(--button-text-dark);
        transform: translateY(-2px);
        box-shadow: 0 4px 10px rgba(var(--primary-accent-rgb), 0.3);
    }
    body.light-theme .back-button:hover {
        color: var(--button-text-light);
    }
    @media (max-width: 768px) {
        .construction-container {
            padding: 30px;
        }
        .construction-container h1 {
            font-size: 2em;
        }
        .construction-icon {
            font-size: 4rem;
        }
        .back-button {
            padding: 12px 25px;
            font-size: 1rem;
        }
    }
    .sidebar {
        scrollbar-width: thin;
        scrollbar-color: var(--primary-accent) var(--sidebar-bg);
    }
    .sidebar::-webkit-scrollbar {
        width: 8px;
    }
    .sidebar::-webkit-scrollbar-track {
        background: var(--sidebar-bg);
    }
    .sidebar::-webkit-scrollbar-thumb {
        background-color: var(--primary-accent);
        border-radius: 10px;
        border: 2px solid var(--sidebar-bg);
    }
    body.light-theme .sidebar::-webkit-scrollbar-track {
        background: var(--sidebar-bg);
    }
    body.light-theme .sidebar::-webkit-scrollbar-thumb {
        background-color: var(--primary-accent);
        border: 2px solid var(--sidebar-bg);
    }
    .sidebar .logo img {
        max-width: 50px;
        height: auto;
        margin-bottom: 10px;
        display: block;
    }
    .sidebar .logo h2, .sidebar .title-subtitle {
        display: block;
    }
    .sidebar.collapsed .logo img {
        max-width: 50px;
    }
    body.light-theme .sidebar .logo img {
        display: block;
    }
    @media (max-width: 768px) {
        .sidebar .logo img {
            display: none !important;
        }
    }
    #initialLoadingOverlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: #191919;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        z-index: 3000;
        transition: opacity 0.5s ease-out, visibility 0s linear 0.5s;
        opacity: 1;
        visibility: visible;
    }
    #initialLoadingOverlay.hidden {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }
    .loading-spinner {
        border: 5px solid rgba(255, 255, 255, 0.2);
        border-top: 5px solid #FCCA36;
        border-radius: 50%;
        width: 50px;
        height: 50px;
        animation: spin 1s linear infinite;
        margin-bottom: 20px;
    }
    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
    .loading-message {
        color: #E0E0E0;
        font-size: 1.2em;
        font-weight: 500;
        text-align: center;
    }
    body.light-theme #initialLoadingOverlay {
        background-color: #F0F2F5;
    }
    body.light-theme .loading-spinner {
        border: 5px solid rgba(0, 0, 0, 0.1);
        border-top: 5px solid #1A73E8;
    }
    body.light-theme .loading-message {
        color: #333333;
    }