body { 
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

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

.glass-effect {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

.nav-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    position: fixed;
    top: 0;
    left: 250px;
    right: 0;
    z-index: 999;
}

.side-menu {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 250px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(255, 255, 255, 0.3);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    z-index: 1001;
    transition: transform 0.3s ease;
}

.menu-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: #4b5563;
    border-radius: 0.5rem;
    transition: all 0.2s ease-in-out;
    margin-bottom: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    width: 100%;
    will-change: transform;
}

.menu-link svg {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.menu-link:hover {
    background: rgba(255, 255, 255, 0.5);
    color: #1f2937;
    transform: translateX(4px);
}

.menu-link.active {
    background: rgba(255, 255, 255, 0.7);
    color: #1f2937;
    transform: translateX(4px);
}

.menu-link.active svg {
    color: #2563eb;
}

.main-content {
    margin-left: 250px;
    min-height: 100vh;
    position: relative;
    transition: margin-left 0.3s ease;
}

.page-content {
    margin-top: 5rem;
    padding: 1.5rem;
    transition: opacity 0.3s ease;
}

.table-container {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

th {
    background: rgba(243, 244, 246, 0.8);
    font-weight: 500;
    text-align: left;
    padding: 1rem;
    font-size: 0.875rem;
    color: #374151;
    position: sticky;
    top: 0;
    z-index: 10;
}

td {
    padding: 1rem;
    font-size: 0.875rem;
    color: #4b5563;
    border-top: 1px solid rgba(229, 231, 235, 0.5);
    transition: background-color 0.2s ease;
}

tr:hover td {
    background: rgba(243, 244, 246, 0.5);
}

.input-field {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

.input-field:focus {
    background: white;
    border-color: #3b82f6;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.toast {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@media (max-width: 900px) {
    #hamburgerBtn {
        display: block !important;
    }
    .side-menu {
        transform: translateX(-110%);
        left: 0;
        transition: transform 0.3s cubic-bezier(.4,0,.2,1);
        box-shadow: 0 0 0 rgba(0,0,0,0);
    }
    .side-menu.open {
        transform: translateX(0);
        box-shadow: 2px 0 16px rgba(0,0,0,0.08);
    }
    .main-content {
        margin-left: 0;
    }
    .side-menu.open ~ #hamburgerBtn,
    #menuOverlay.active ~ #hamburgerBtn {
        display: none !important;
    }
    .hide-mobile {
        display: none !important;
    }
    .nav-glass {
        display: none !important;
    }
}
@media (min-width: 901px) {
    #hamburgerBtn {
        display: none !important;
    }
    .side-menu {
        transform: none !important;
        box-shadow: none !important;
    }
}

.btn-gradient {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%) !important;
    color: #fff !important;
    transition: all 0.3s ease;
    border: none !important;
    cursor: pointer;
}
.btn-gradient:hover, .btn-gradient:focus {
    filter: brightness(1.08);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.18);
    outline: none;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #fff !important;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}
.btn-danger:hover, .btn-danger:focus {
    filter: brightness(1.08);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.18);
    outline: none;
}

#menuOverlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.18);
    z-index: 1000;
    pointer-events: auto;
}
#menuOverlay.active {
    display: block;
}