@font-face{
        font-family:'Vazirmatn';
        src:url('/static/css/fonts/Vazirmatn/webfonts/Vazirmatn-Regular.woff2') format('woff2');
    }

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

    body{
        font-family:'Vazirmatn',sans-serif;
        background:#070F2B;
        min-height:100vh;
        display:flex;
        align-items:center;
        justify-content:center;
        padding:20px;
        overflow-x:hidden;
    }

    .container{
        width:100%;
        max-width:1100px;
        background:linear-gradient(180deg,rgba(255,255,255,.1),rgba(0,0,0,.1));
        border-radius:24px;
        box-shadow:0 25px 70px rgba(0,0,0,0.6);
        overflow:hidden;
        display:grid;
        grid-template-columns:1fr 1fr;
        min-height:640px;
        position:relative;
        border:1px solid rgba(255,255,255,0.1);
    }

    .forms-container{
        position:relative;
        width:100%;
        height:100%;
        overflow:hidden;
        background:#070F2B;
    }

    .signin-signup{
        position:absolute;
        top:0;
        right:0;
        width:200%;
        height:100%;
        display:grid;
        grid-template-columns:1fr 1fr;
        transition:transform 0.7s cubic-bezier(0.4, 0.0, 0.2, 1);
        will-change:transform;
    }

    .container.sign-up-mode .signin-signup{
        transform:translateX(50%);
    }

    form{
        display:flex;
        flex-direction:column;
        align-items:center;
        justify-content:center;
        padding:50px 40px;
        height:100%;
        width:100%;
    }

    .title{
        font-size:30px;
        color:#fff;
        margin-bottom:8px;
        font-weight:600;
        text-shadow:0 2px 10px rgba(0,0,0,0.3);
    }

    .subtitle{
        color:#a0aec0;
        margin-bottom:35px;
        font-size:15px;
    }

    .input-field{
        width:100%;
        max-width:360px;
        background:#535C91;
        margin:8px 0;
        height:54px;
        border-radius:12px;
        display:flex;
        align-items:center;
        padding:0 18px;
        border:1px solid rgba(255,255,255,0.08);
        position:relative;
        transition:all 0.3s ease;
    }

    .input-field:hover{
        background:rgba(93, 102, 155, 0.95);
        transform:translateY(-1px);
        box-shadow:0 4px 12px rgba(0,0,0,0.2);
    }

    .input-field:focus-within{
        border-color:rgba(255,255,255,0.3);
        box-shadow:0 0 0 3px rgba(99,102,241,0.15), 0 4px 12px rgba(0,0,0,0.2);
    }

    .input-field input{
        background:none;
        border:none;
        outline:none;
        width:100%;
        color:#fff;
        font-size:14.5px;
        font-family:'Vazirmatn',sans-serif;
        padding-right:12px;
    }

    .input-field input::placeholder{
        color:rgba(255,255,255,0.6);
    }

    .input-field i.field-icon{
        color:rgba(255,255,255,0.9);
        font-size:15px;
        min-width:20px;
        text-align:center;
    }

    .toggle-password{
        position:absolute;
        left:18px;
        cursor:pointer;
        color:rgba(255,255,255,0.5);
        font-size:14px;
        transition:all 0.2s;
        padding:5px;
    }

    .toggle-password:hover{
        color:#fff;
        transform:scale(1.1);
    }

    .btn{
        font-family:'Vazirmatn',sans-serif;
        width:100%;
        max-width:360px;
        height:48px;
        border:none;
        border-radius:12px;
        cursor:pointer;
        background:#1B1A55;
        color:#fff;
        font-size:16px;
        margin-top:25px;
        transition:all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
        box-shadow:0 4px 15px rgba(27,26,85,0.4);
        font-weight:500;
        position:relative;
        overflow:hidden;
    }

    .social-text{
        margin:28px 0 18px;
        color:#94a3b8;
        font-size:13px;
        position:relative;
        display:flex;
        align-items:center;
        gap:15px;
    }

    .social-text::before,
    .social-text::after{
        content:'';
        flex:1;
        height:1px;
        background:linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    }

    .social-media{
        display:flex;
        gap:12px;
    }

    .social-icon{
        width:44px;
        height:44px;
        border-radius:12px;
        display:flex;
        align-items:center;
        justify-content:center;
        border:1px solid rgba(255,255,255,0.15);
        color:#fff;
        cursor:pointer;
        transition:all 0.3s ease;
        background:rgba(255,255,255,0.05);
        font-size:18px;
    }

    .social-icon:hover{
        background:rgba(255,255,255,0.15);
        border-color:rgba(255,255,255,0.3);
        box-shadow:0 5px 15px rgba(0,0,0,0.2);
    }

    /* مخفی کردن mobile-toggle در دسکتاپ */
    .mobile-toggle {
        display: none;
    }

    .panels-container{
        position:relative;
        width:100%;
        height:100%;
        overflow:hidden;
    }

    .panel{
        display:flex;
        flex-direction:column;
        align-items:center;
        justify-content:center;
        text-align:center;
        padding:50px 40px;
        position:absolute;
        top:0;
        width:100%;
        height:100%;
        transition:all 0.7s cubic-bezier(0.4, 0.0, 0.2, 1);
        background:linear-gradient(135deg,rgba(0,200,255,0.1),rgba(0,119,255,0.1));
        backdrop-filter:blur(12px);
        will-change:transform, opacity;
    }

    /* پنل راست - حالت پیش‌فرض */
    .right-panel{
        right:0;
        transform:translateX(0);
        opacity:1;
        z-index:2;
        background-image:url('/static/img/sign_up.jpg');
        background-size:cover;
        background-position:30% center;
    }

    .right-panel::before{
        content:'';
        position:absolute;
        inset:0;
        background:rgba(26, 29, 74, 0.161);
        z-index:-1;
        transition:opacity 0.5s;
    }

    /* پنل چپ - حالت ثبت‌نام */
    .left-panel{
        right:0;
        transform:translateX(100%);
        opacity:0;
        z-index:1;
        background:linear-gradient(180deg,#070F2B,rgba(26, 29, 74, 0));
    }

    /* حالت ثبت‌نام فعال */
    .container.sign-up-mode .right-panel{
        transform:translateX(-100%);
        opacity:0;
        z-index:1;
    }

    .container.sign-up-mode .left-panel{
        transform:translateX(0);
        opacity:1;
        z-index:2;
    }

    .panel h3{
        font-size:26px;
        color:#fff;
        margin-bottom:12px;
        font-weight:600;
        text-shadow:0 2px 8px rgba(0,0,0,0.3);
    }

    .panel p{
        color:#cbd5e1;
        margin-bottom:28px;
        font-size:15px;
        line-height:1.7;
        max-width:280px;
    }

    .btn-transparent{
        font-family:'Vazirmatn',sans-serif;
        border-radius:25px;
        background:transparent;
        border:2px solid rgba(255,255,255,0.8);
        width:170px;
        height:48px;
        color:#fff;
        cursor:pointer;
        font-size:15px;
        transition:all 0.3s ease;
        position:relative;
        overflow:hidden;
        backdrop-filter:blur(4px);
    }

    .btn-transparent:hover{
        background:rgba(255,255,255,0.15);
        border-color:#fff;
    }

    /* موبایل */
    @media(max-width:870px){
        body{
            padding:0;
            align-items:flex-start;
        }

        .container{
            grid-template-columns:1fr;
            min-height:100vh;
            max-width:100%;
            border-radius:0;
            background:#070F2B;
        }

        .panels-container{
            display:none;
        }

        .forms-container{
            background:transparent;
        }

        .signin-signup{
            width:200%;
            position:relative;
            transform:translateX(0);
            height:auto;
            min-height:100vh;
        }

        .container.sign-up-mode .signin-signup{
            transform:translateX(50%);
        }

        form{
            padding:60px 25px;
            justify-content:flex-start;
            padding-top:100px;
        }

        .title{
            font-size:26px;
            margin-top:20px;
        }

        .input-field,
        .btn{
            max-width:100%;
        }

        .mobile-toggle{
            display:block;
            margin-top:35px;
            text-align:center;
            color:#94a3b8;
            font-size:14px;
        }

        .mobile-toggle button{
            background:transparent;
            border:none;
            color:#60a5fa;
            font-family:'Vazirmatn',sans-serif;
            font-weight:600;
            cursor:pointer;
            text-decoration:underline;
            text-underline-offset:4px;
            font-size:14px;
            margin-right:5px;
        }
    }

    @media(max-width:480px){
        form{
            padding:40px 20px;
            padding-top:80px;
        }
        
        .title{
            font-size:24px;
        }
        
        .subtitle{
            font-size:14px;
        }
        
        .input-field{
            height:52px;
            margin:6px 0;
        }
        
        .btn{
            height:52px;
            margin-top:20px;
        }
    }

    /* انیمیشن لرزش برای خطا */
    @keyframes shake{
        0%,100%{transform:translateX(0);}
        20%,60%{transform:translateX(-5px);}
        40%,80%{transform:translateX(5px);}
    }

    .shake{
        animation:shake 0.5s ease;
    }