html, body {
        margin: 0;
        padding: 0;
        overflow-x: hidden;
        box-sizing: border-box;
    }
    *, *::before, *::after {
        box-sizing: inherit;
    }

  
    body {
        font-family: 'Vazirmatn', sans-serif;
        background-color: #f0f0f0; 
        color: #333;
        /* padding-top: 56px;  */
    }

    .instant-transition {
        transition: none !important;
    }

    .instant-transition.sidebar-desktop,
    .instant-transition.content-with-sidebar {
    transition: none !important;
    }
  
    /* nav*/
    .navbar-brand {
        font-weight: bold;
        font-size: 1.5rem;
    }
    
    .card {
        border-radius: 15px;
        transition: box-shadow 0.2s ease;
    }
    .card:hover {
        box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    }
    
    /* jadval */
    .table th,
    .table td {
        vertical-align: middle;
    }
    
    /* alert */
    .alert {
        border-radius: 10px;
        transition: background-color 0.2s ease, box-shadow 0.2s ease;
    }
    .alert:hover {
        box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    }
    

    
    .sidebar-desktop {
        position: fixed;
        top: 56px;
        bottom: 0;
        right: 0; 
        width: 250px;
        background: linear-gradient(180deg, #2c2c2c 0%, #343a40 100%);
        color: #fff;
        border-left: 1px solid #454d55;
        box-shadow: -2px 0 8px rgba(0,0,0,0.3);
        padding: 1rem;
        overflow-y: auto;
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); 
        z-index: 1040;
    }
    
    .sidebar-desktop.sidebar-collapsed {
        transform: translateX(220px);
    }
    
    @media (min-width: 768px) {
        .content-with-sidebar {
        margin-right: 250px; 
        transition: margin-right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .content-with-sidebar.sidebar-collapsed {
        margin-right: 30px; 
        }
    }
    
    .sidebar-desktop .nav-link {
        color: #ddd;
        margin: 0.4rem 0;
        border-radius: 6px;
        padding: 0.6rem;
        transition: background-color 0.2s, color 0.2s;
    }
    .sidebar-desktop .nav-link:hover {
        background-color: #495057;
        color: #fff;
    }
    .sidebar-desktop .nav-link.active {
        background-color: #0d6efd;
        color: #fff !important;
    }
    
    .sidebar-floating-toggle {
        position: fixed;
        top: 50%;
        right: 0;
        transform: translateY(-50%);
        width: 40px;
        height: 40px;
        background: linear-gradient(145deg, #343a40, #2c2c2c);
        color: #fff;
        border: 1px solid #454d55;
        border-left: none;
        border-radius: 4px 0 0 4px;
        display: none; /* پیشفرض پنهان. در md-up نمایش می‌دهیم */
        align-items: center;
        justify-content: center;
        cursor: pointer;
        box-shadow: 0 3px 8px rgba(0,0,0,0.4);
        z-index: 9999;
        transition: background-color 0.2s;
    }
    
    @media (min-width: 768px) {
        .sidebar-floating-toggle {
        display: flex;
        }
    }
    
    .sidebar-floating-toggle:hover {
        background-color: #495057;
    }
    

    .offcanvas.offcanvas-start.d-md-none {
        background: linear-gradient(180deg, #2c2c2c 0%, #343a40 100%);
        color: #fff;
        width: 80vw;
        max-width: 350px;
        overflow-x: hidden;
        z-index: 1050; 
    }
    
    .offcanvas-header {
        border-bottom: 1px solid #454d55;
    }
    
    .offcanvas-body .nav-link {
        color: #ddd;
        margin: 0.3rem 0;
        border-radius: 4px;
        padding: 0.5rem;
        transition: background-color 0.2s;
    }
    .offcanvas-body .nav-link:hover {
        background-color: #495057;
    }
    
    /* taghvim */
    .datepicker {
        border: 1px solid #ccc;
        border-radius: 8px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }
    .datepicker-plot-area {
        background-color: #ffffff;
        color: #333;
        font-family: 'Vazirmatn', sans-serif;
    }
    .datepicker-header {
        background-color: #007bff;
        color: white;
        padding: 10px;
    }
    .datepicker-day {
        padding: 10px;
        border-radius: 4px;
        transition: all 0.2s ease;
    }
    .datepicker-day:hover {
        background-color: #007bff;
        color: white;
    }


    /* login */

    .login-container{
        min-height:100vh;
        font-family:'Vazirmatn',sans-serif;
        background:#f5f6f8;
    }
    .login-image{
        position:relative;
        min-height:100vh;
        background:url("../images/inotic-bg.jpg") center/cover no-repeat;
    }
    .login-image::after{
        content:"";
        position:absolute;
        inset:0;
        background:rgba(0,0,0,.25);
    }

    .login-card{
        max-width:420px;
        width:100%;
        padding:2.5rem 2rem 2rem;
        border-radius:20px;
        background:#fff;
        box-shadow:0 10px 32px rgba(0,0,0,.12);
        transition:transform .3s cubic-bezier(.4,0,.2,1),
                box-shadow .3s cubic-bezier(.4,0,.2,1);
    }
    .login-card:hover{
        transform:translateY(-4px);
        box-shadow:0 14px 38px rgba(0,0,0,.16);
    }

    .login-card .form-label{
        font-weight:500;
        margin-bottom:.35rem;
    }

    .login-card .input-group-text{
        background:#f1f3f7;
        border:1px solid #e0e3e8;
    }
    .login-card .form-control{
        border:1px solid #e0e3e8;
    }
    .login-card .form-control:focus{
        border-color:#0d6efd;
        box-shadow:0 0 0 .15rem rgba(13,110,253,.25);
    }

    .login-card .btn-primary{
        background:#0d6efd;
        border:none;
        font-weight:600;
        transition:background .2s;
    }
    .login-card .btn-primary:hover{
        background:#0b5ed7;
    }

    .login-notes ul{
        padding-right:1.25rem;
        margin:0;
        line-height:1.85;
        list-style:disc;
    }
    .login-notes li::marker{
        color:#0d6efd;
    }

    .login-footer{
        font-size:13px;
        line-height:1.4;
    }

    /* ─────────────  rispansive login ───────────── */
    @media(max-width:767.98px){
        .login-image{display:none;}
    }

    @media(min-width:1400px){
        .login-card{
            margin-left:-40px;
        }
    }

    /* end login */