/**
 * Modern Professional Sidebar Styles
 * Elegant, clean design with smooth animations
 * Based on 2024-2025 UI/UX best practices
 */

/* ===== CSS Variables for Theming ===== */
:root {
    /* Light Mode Colors */
    --sidebar-bg: #ffffff;
    --sidebar-bg-secondary: #f8fafc;
    --sidebar-border: #e2e8f0;
    --sidebar-text: #64748b;
    --sidebar-text-hover: #1e293b;
    --sidebar-text-active: #3b82f6;
    --sidebar-icon: #94a3b8;
    --sidebar-icon-hover: #475569;
    --sidebar-icon-active: #3b82f6;
    --sidebar-item-hover-bg: #f1f5f9;
    --sidebar-item-active-bg: #eff6ff;
    --sidebar-item-active-border: #3b82f6;
    --sidebar-header-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --sidebar-header-text: #ffffff;
    --sidebar-divider: #e2e8f0;
    --sidebar-badge-bg: #ef4444;
    --sidebar-badge-text: #ffffff;
    --sidebar-scrollbar-track: #f1f5f9;
    --sidebar-scrollbar-thumb: #cbd5e1;
    --sidebar-scrollbar-thumb-hover: #94a3b8;
    --sidebar-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 72px;
    --sidebar-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --sidebar-bg: #1e293b;
    --sidebar-bg-secondary: #0f172a;
    --sidebar-border: #334155;
    --sidebar-text: #94a3b8;
    --sidebar-text-hover: #f1f5f9;
    --sidebar-text-active: #60a5fa;
    --sidebar-icon: #64748b;
    --sidebar-icon-hover: #cbd5e1;
    --sidebar-icon-active: #60a5fa;
    --sidebar-item-hover-bg: #334155;
    --sidebar-item-active-bg: rgba(59, 130, 246, 0.1);
    --sidebar-item-active-border: #60a5fa;
    --sidebar-header-bg: linear-gradient(135deg, #1e3a5f 0%, #2d1f4e 100%);
    --sidebar-header-text: #f1f5f9;
    --sidebar-divider: #334155;
    --sidebar-scrollbar-track: #1e293b;
    --sidebar-scrollbar-thumb: #475569;
    --sidebar-scrollbar-thumb-hover: #64748b;
    --sidebar-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

/* ===== Main Sidebar Container ===== */
.sidebar-modern {
    position: relative;
    display: flex;
    flex-direction: column;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    box-shadow: var(--sidebar-shadow);
    transition: var(--sidebar-transition);
    z-index: 50;
    overflow: hidden;
}

/* Collapsed State */
.sidebar-modern.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-modern.collapsed .sidebar-logo-text,
.sidebar-modern.collapsed .sidebar-menu-text,
.sidebar-modern.collapsed .sidebar-badge,
.sidebar-modern.collapsed .sidebar-dropdown-arrow,
.sidebar-modern.collapsed .sidebar-section-title {
    opacity: 0;
    visibility: hidden;
    width: 0;
}

.sidebar-modern.collapsed .sidebar-menu-item {
    justify-content: center;
    padding: 12px;
}

.sidebar-modern.collapsed .sidebar-menu-icon {
    margin-right: 0;
}

.sidebar-modern.collapsed .sidebar-submenu {
    position: absolute;
    left: var(--sidebar-collapsed-width);
    top: 0;
    width: 220px;
    background: var(--sidebar-bg);
    border-radius: 8px;
    box-shadow: var(--sidebar-shadow);
    border: 1px solid var(--sidebar-border);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: var(--sidebar-transition);
}

.sidebar-modern.collapsed .sidebar-dropdown:hover .sidebar-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* Collapsed Header */
.sidebar-modern.collapsed .sidebar-header {
    padding: 16px 8px;
    justify-content: center;
}

.sidebar-modern.collapsed .sidebar-logo {
    justify-content: center;
}

.sidebar-modern.collapsed .sidebar-status {
    display: none;
}

.sidebar-modern.collapsed .sidebar-search {
    padding: 8px;
}

.sidebar-modern.collapsed .sidebar-search-wrapper {
    padding: 8px;
    justify-content: center;
}

.sidebar-modern.collapsed .sidebar-search-input {
    display: none;
}

/* ===== Sidebar Header / Logo ===== */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 16px;
    background: var(--sidebar-header-bg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    overflow: hidden;
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    flex-shrink: 0;
    backdrop-filter: blur(10px);
}

.sidebar-logo-icon svg,
.sidebar-logo-icon i {
    width: 22px;
    height: 22px;
    color: var(--sidebar-header-text);
}

.sidebar-logo-text {
    display: flex;
    flex-direction: column;
    transition: var(--sidebar-transition);
    white-space: nowrap;
}

.sidebar-logo-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--sidebar-header-text);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.sidebar-logo-subtitle {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.sidebar-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: rgba(34, 197, 94, 0.2);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    color: #22c55e;
}

.sidebar-status-dot {
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.2);
    }
}

/* ===== Sidebar Search ===== */
.sidebar-search {
    padding: 16px;
    border-bottom: 1px solid var(--sidebar-divider);
    flex-shrink: 0;
}

.sidebar-search-input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    background: var(--sidebar-bg-secondary);
    border: 1px solid var(--sidebar-border);
    border-radius: 10px;
    font-size: 13px;
    color: var(--sidebar-text-hover);
    transition: var(--sidebar-transition);
    outline: none;
}

.sidebar-search-input:focus {
    border-color: var(--sidebar-item-active-border);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.sidebar-search-input::placeholder {
    color: var(--sidebar-icon);
}

.sidebar-search-wrapper {
    position: relative;
}

.sidebar-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--sidebar-icon);
}

/* ===== Sidebar Menu Container ===== */
.sidebar-menu-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 12px 80px 12px;
}

/* Custom Scrollbar */
.sidebar-menu-container::-webkit-scrollbar {
    width: 6px;
}

.sidebar-menu-container::-webkit-scrollbar-track {
    background: var(--sidebar-scrollbar-track);
    border-radius: 3px;
}

.sidebar-menu-container::-webkit-scrollbar-thumb {
    background: var(--sidebar-scrollbar-thumb);
    border-radius: 3px;
}

.sidebar-menu-container::-webkit-scrollbar-thumb:hover {
    background: var(--sidebar-scrollbar-thumb-hover);
}

/* ===== Menu Sections ===== */
.sidebar-section {
    margin-bottom: 8px;
}

.sidebar-section-title {
    padding: 12px 12px 8px 12px;
    font-size: 11px;
    font-weight: 700;
    color: var(--sidebar-icon);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: var(--sidebar-transition);
}

/* ===== Menu Items ===== */
.sidebar-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    margin: 2px 0;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: var(--sidebar-transition);
    cursor: pointer;
    position: relative;
    border: none;
    background: transparent;
    width: 100%;
    text-align: left;
}

.sidebar-menu-item:hover {
    background: var(--sidebar-item-hover-bg);
    color: var(--sidebar-text-hover);
}

.sidebar-menu-item:hover .sidebar-menu-icon {
    color: var(--sidebar-icon-hover);
}

.sidebar-menu-item.active {
    background: var(--sidebar-item-active-bg);
    color: var(--sidebar-text-active);
    font-weight: 600;
}

.sidebar-menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--sidebar-item-active-border);
    border-radius: 0 3px 3px 0;
}

.sidebar-menu-item.active .sidebar-menu-icon {
    color: var(--sidebar-icon-active);
}

/* Menu Icon */
.sidebar-menu-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--sidebar-icon);
    transition: var(--sidebar-transition);
}

.sidebar-menu-icon svg {
    width: 100%;
    height: 100%;
}

/* Menu Text */
.sidebar-menu-text {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: var(--sidebar-transition);
}

/* Badge */
.sidebar-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: var(--sidebar-badge-bg);
    color: var(--sidebar-badge-text);
    font-size: 11px;
    font-weight: 600;
    border-radius: 10px;
    transition: var(--sidebar-transition);
}

.sidebar-badge.badge-blue {
    background: #3b82f6;
}

.sidebar-badge.badge-green {
    background: #22c55e;
}

.sidebar-badge.badge-yellow {
    background: #eab308;
    color: #1e293b;
}

/* ===== Dropdown Menu ===== */
.sidebar-dropdown {
    position: relative;
}

.sidebar-dropdown-toggle {
    display: flex;
    align-items: center;
    width: 100%;
}

.sidebar-dropdown-arrow {
    width: 16px;
    height: 16px;
    color: var(--sidebar-icon);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: auto;
}

.sidebar-dropdown.open .sidebar-dropdown-arrow {
    transform: rotate(90deg);
}

/* Submenu */
.sidebar-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, opacity 0.3s ease;
    opacity: 0;
}

.sidebar-dropdown.open .sidebar-submenu {
    max-height: 2000px; /* Increased to accommodate large menus */
    opacity: 1;
}

.sidebar-submenu-inner {
    padding: 4px 0 4px 20px;
    margin-left: 16px;
    border-left: 2px solid var(--sidebar-divider);
}

.sidebar-submenu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    margin: 2px 0;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: var(--sidebar-transition);
}

.sidebar-submenu-item:hover {
    background: var(--sidebar-item-hover-bg);
    color: var(--sidebar-text-hover);
}

.sidebar-submenu-item.active {
    color: var(--sidebar-text-active);
    font-weight: 600;
}

.sidebar-submenu-item::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--sidebar-border);
    transition: var(--sidebar-transition);
}

.sidebar-submenu-item:hover::before,
.sidebar-submenu-item.active::before {
    background: var(--sidebar-item-active-border);
}

/* ===== Sidebar Footer ===== */
.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px;
    background: linear-gradient(to top, var(--sidebar-bg) 80%, transparent);
    border-top: 1px solid var(--sidebar-divider);
}

.sidebar-footer-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: var(--sidebar-bg-secondary);
    border-radius: 10px;
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
}

.sidebar-user-info {
    flex: 1;
    overflow: hidden;
}

.sidebar-user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--sidebar-text-hover);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 11px;
    color: var(--sidebar-text);
}

/* ===== Collapse Toggle ===== */
.sidebar-collapse-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--sidebar-bg-secondary);
    border: 1px solid var(--sidebar-border);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--sidebar-transition);
    color: var(--sidebar-icon);
}

.sidebar-collapse-btn:hover {
    background: var(--sidebar-item-hover-bg);
    color: var(--sidebar-text-hover);
}

.sidebar-collapse-btn svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.sidebar-modern.collapsed .sidebar-collapse-btn svg {
    transform: rotate(180deg);
}

/* Collapsed Footer - Center the expand button */
.sidebar-modern.collapsed .sidebar-footer {
    padding: 12px 8px;
}

.sidebar-modern.collapsed .sidebar-footer-content {
    flex-direction: column;
    gap: 8px;
    padding: 8px;
    justify-content: center;
    align-items: center;
}

.sidebar-modern.collapsed .sidebar-user-avatar {
    width: 32px;
    height: 32px;
}

.sidebar-modern.collapsed .sidebar-user-info {
    display: none;
}

.sidebar-modern.collapsed .sidebar-collapse-btn {
    width: 40px;
    height: 40px;
    margin-top: 8px;
    background: var(--sidebar-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: all 0.2s ease;
}

.sidebar-modern.collapsed .sidebar-collapse-btn:hover {
    background: var(--sidebar-accent-hover, #4f46e5);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.sidebar-modern.collapsed .sidebar-collapse-btn svg {
    width: 20px;
    height: 20px;
    color: white;
}

/* ===== Divider ===== */
.sidebar-divider {
    height: 1px;
    background: var(--sidebar-divider);
    margin: 12px 0;
}

/* ===== Mobile Overlay ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 40;
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .sidebar-modern {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        z-index: 100;
    }

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

/* ===== Hover Effects & Animations ===== */
.sidebar-menu-item:active {
    transform: scale(0.98);
}

/* Ripple Effect */
.sidebar-menu-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, var(--sidebar-item-active-border) 0%, transparent 70%);
    opacity: 0;
    transform: scale(0);
    border-radius: inherit;
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.sidebar-menu-item:active::after {
    opacity: 0.1;
    transform: scale(2);
}

/* Icon Animation on Hover */
.sidebar-menu-item:hover .sidebar-menu-icon {
    transform: scale(1.1);
}

/* ===== Tooltip for Collapsed State ===== */
.sidebar-modern.collapsed .sidebar-menu-item {
    position: relative;
}

.sidebar-tooltip {
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    padding: 8px 12px;
    background: var(--sidebar-bg-secondary);
    color: var(--sidebar-text-hover);
    font-size: 13px;
    font-weight: 500;
    border-radius: 8px;
    box-shadow: var(--sidebar-shadow);
    border: 1px solid var(--sidebar-border);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--sidebar-transition);
    z-index: 100;
}

.sidebar-tooltip::before {
    content: '';
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-right-color: var(--sidebar-border);
}

.sidebar-modern.collapsed .sidebar-menu-item:hover .sidebar-tooltip {
    opacity: 1;
    visibility: visible;
}

/* ===== Loading Skeleton ===== */
.sidebar-skeleton {
    padding: 12px;
}

.sidebar-skeleton-item {
    height: 44px;
    background: linear-gradient(90deg, var(--sidebar-bg-secondary) 25%, var(--sidebar-item-hover-bg) 50%, var(--sidebar-bg-secondary) 75%);
    background-size: 200% 100%;
    border-radius: 10px;
    margin-bottom: 8px;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ===== Notification Dot ===== */
.sidebar-notification-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--sidebar-badge-bg);
    border-radius: 50%;
    border: 2px solid var(--sidebar-bg);
    animation: pulse-red 2s infinite;
}

@keyframes pulse-red {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
    }
    50% {
        transform: scale(1.1);
        box-shadow: 0 0 0 6px rgba(239, 68, 68, 0);
    }
}

/* ===== Quick Actions ===== */
.sidebar-quick-actions {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--sidebar-divider);
}

.sidebar-quick-action {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 8px;
    background: var(--sidebar-bg-secondary);
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: var(--sidebar-transition);
}

.sidebar-quick-action:hover {
    background: var(--sidebar-item-hover-bg);
    color: var(--sidebar-text-hover);
    transform: translateY(-2px);
}

.sidebar-quick-action svg {
    width: 18px;
    height: 18px;
    color: var(--sidebar-icon);
}

/* ===== Print Styles ===== */
@media print {
    .sidebar-modern,
    .sidebar-overlay {
        display: none !important;
    }
}