:root {
    --bg-body: #f5f7fa;
    --bg-sidebar: #2c3e50;
    --bg-header: white;
    --bg-card: white;
    --text-primary: #333;
    --text-secondary: #7f8c8d;
    --text-sidebar: white;
    --color-primary: #3498db;
    --color-success: #2ecc71;
    --border-color: rgba(0, 0, 0, 0.125);
    --color-danger: #e74c3c;
    --color-warning: #f1c40f;
}

html[data-theme="dark"] {
    --bg-body: #1a252f;
    --bg-sidebar: #0e1621;
    --bg-header: #2c3e50;
    --bg-card: #2c3e50;
    --text-primary: #ecf0f1;
    --text-secondary: #bdc3c7;
    --text-sidebar: #bdc3c7;
    --color-primary: #3498db;
    --color-success: #27ae60;
    --border-color: rgba(255, 255, 255, 0.1);
    --color-danger: #ff6b6b;
    --color-warning: #feca57;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
}

/* Layout */
.erp-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-sidebar);
    color: var(--text-sidebar);
    transition: width 0.3s ease;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar.collapsed {
    width: 70px;
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #34495e;
    border-radius: 3px;
}

/* Toggle Button */
.toggle-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #34495e;
    border: none;
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    z-index: 10;
}

.toggle-btn:hover {
    background: #1abc9c;
    transform: scale(1.1);
}

/* Logo Area */
.sidebar-header {
    padding: 20px 60px 20px 20px;
    border-bottom: 1px solid #34495e;
    margin-bottom: 20px;
}

.sidebar-header h2 {
    font-size: 20px;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity 0.3s;
}

.sidebar.collapsed .sidebar-header h2 {
    opacity: 0;
}

/* Menu */
.menu {
    padding: 10px 0;
}

.menu-item {
    position: relative;
}

.item-label {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.3s;
    color: #ecf0f1;
    text-decoration: none;
}

.item-label:hover {
    background: #34495e;
    padding-left: 25px;
}

.item-label.active {
    background: #1abc9c;
    border-left: 4px solid #16a085;
}

.item-label i {
    min-width: 30px;
    font-size: 18px;
}

.item-label span {
    margin-left: 10px;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity 0.3s;
}

.sidebar.collapsed .item-label span {
    opacity: 0;
    width: 0;
}

.arrow {
    margin-left: auto;
    transition: transform 0.3s;
    font-size: 12px;
}

.arrow.expanded {
    transform: rotate(90deg);
}

.sidebar.collapsed .arrow {
    display: none;
}

/* Submenu */
.submenu {
    background: #1a252f;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.submenu .item-label {
    padding-left: 50px;
    font-size: 14px;
}

.submenu .submenu .item-label {
    padding-left: 70px;
    font-size: 13px;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-left: 0;
    transition: margin-left 0.3s ease;
    overflow: hidden;
}

/* Header */
.top-header {
    background: var(--bg-header);
    padding: 15px 30px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left h1 {
    font-size: 24px;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.notification-icon {
    position: relative;
    cursor: pointer;
    font-size: 20px;
    color: var(--text-secondary);
}

.notification-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #e74c3c;
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #3498db;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    position: relative;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.2s;
    color: var(--text-primary);
}

.user-profile:hover {
    background-color: var(--border-color);
}

.profile-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 200px;
    background: var(--bg-header);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 0.5rem 0;
    z-index: 1000;
    margin-top: 0.5rem;
    border: 1px solid var(--border-color);
    animation: fadeIn 0.2s ease-out;
}

.dropdown-item {
    display: flex !important;
    align-items: center !important;
    padding: 0.75rem 1rem !important;
    color: var(--text-primary) !important;
    text-decoration: none !important;
    transition: background-color 0.2s !important;
}

.dropdown-item.text-danger {
    color: var(--color-danger) !important;
}

.dropdown-item:hover {
    background-color: var(--bg-body);
    color: var(--color-primary);
}

.dropdown-item i {
    width: 20px;
    margin-right: 10px;
    text-align: center;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 0.5rem 0;
}

/* Utilities */
.text-danger {
    color: var(--color-danger) !important;
}

.text-success {
    color: var(--color-success) !important;
}

.text-warning {
    color: var(--color-warning) !important;
}

.text-primary {
    color: var(--color-primary) !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
    background: var(--bg-body);
}

.page-content {
    background: var(--bg-header);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    min-height: 500px;
}

/* Animations */
.submenu-enter-active,
.submenu-leave-active {
    transition: all 0.3s ease;
}

.submenu-enter-from {
    max-height: 0;
    opacity: 0;
}

.submenu-enter-to {
    max-height: 500px;
    opacity: 1;
}

.submenu-leave-from {
    max-height: 500px;
    opacity: 1;
}

.submenu-leave-to {
    max-height: 0;
    opacity: 0;
}

/* Loading State */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-size: 20px;
    color: #7f8c8d;
}


/* Menu loading state */
.menu-loading {
    padding: 20px;
    text-align: center;
    color: #ecf0f1;
    font-size: 14px;
}

.menu-loading i {
    margin-right: 8px;
}

/* Loading Bar */
.loading-bar-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--loading-bar-height, 3px);
    z-index: 9999;
    pointer-events: none;
}

.loading-bar {
    height: 100%;
    background: var(--loading-bar-color, linear-gradient(90deg, #3498db, #2ecc71));
    width: 100%;
    animation: loading-animation 2s infinite;
    transform-origin: 0% 50%;
}

@keyframes loading-animation {
    0% {
        transform: translateX(0) scaleX(0);
    }

    40% {
        transform: translateX(0) scaleX(0.4);
    }

    100% {
        transform: translateX(100%) scaleX(0.5);
    }
}

/* Modal and Transitions */
.fade-enter-active,
.fade-leave-active {
    transition: opacity 0.3s;
}

.fade-enter-from,
.fade-leave-to {
    opacity: 0;
}