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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #4a90e2 0%, #1e3a5f 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    direction: rtl;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.logo {
    text-align: center;
    margin-bottom: 35px;
}

    .logo h1 {
        color: #333;
        font-size: 28px;
        margin-bottom: 8px;
    }

    .logo p {
        color: #666;
        font-size: 14px;
    }

.form-group {
    margin-bottom: 20px;
}

    .form-group label {
        display: block;
        margin-bottom: 8px;
        color: #333;
        font-weight: 500;
        font-size: 14px;
    }

    .form-group input {
        width: 100%;
        padding: 12px 15px;
        border: 2px solid #e0e0e0;
        border-radius: 8px;
        font-size: 15px;
        transition: all 0.3s ease;
        direction: rtl;
    }

        .form-group input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

.error-message {
    color: #e74c3c;
    background: #fadbd8;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    display: none;
    text-align: center;
}

    .error-message.show {
        display: block;
        animation: shake 0.3s ease;
    }

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #4a90e2 0%, #1e3a5f 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

    .btn-login:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 20px rgba(74, 144, 226, 0.4);
    }
    .btn-login:active {
        transform: translateY(0);
    }

    .btn-login:disabled {
        opacity: 0.6;
        cursor: not-allowed;
    }